yaml-0.8.20/0000755000000000000000000000000013001717724010733 5ustar0000000000000000yaml-0.8.20/ChangeLog.md0000644000000000000000000000412313001717724013104 0ustar0000000000000000## 0.8.20 * Upgrade to libyaml 0.1.7 ## 0.8.19.0 * Add `Data.Yaml.TH` module ## 0.8.18.7 * Add `O_TRUNC` when opening files ## 0.8.18.6 * s/fdopen/_fdopen on Windows [#96](https://github.com/snoyberg/yaml/issues/96) ## 0.8.18.5 * Properly fix previous bug (fixes #94) ## 0.8.18.4 * Remove file with non-ASCII name due to Stack/cabal-install/Hackage restrictions (see [#92](https://github.com/snoyberg/yaml/issues/92)) ## 0.8.18.2 * Handle non-ASCII filenames correctly on Windows [#91](https://github.com/snoyberg/yaml/pull/91) ## 0.8.18.1 * Improve prettyPrintParseException when context is empty [#89](https://github.com/snoyberg/yaml/pull/89) ## 0.8.18 * Switched yaml decode function for config file readers in `Data.Yaml.Config` to the one from `Data.Yaml.Include` that supports `!include` syntax. ## 0.8.17.2 * Fix pretty-printing order of UnexpectedEvent's fields (fixes [#84](https://github.com/snoyberg/yaml/issues/84)) [#85](https://github.com/snoyberg/yaml/pull/85) ## 0.8.17.1 * Avoid bug in Cabal [#83](https://github.com/snoyberg/yaml/pull/83) ## 0.8.17 * `loadYamlSettingsArgs` ## 0.8.16.1 * Slight doc improvement ## 0.8.16 Add env variable parsing. `loadYamlSettings` can read config values from the environment with Yaml that specifies an env var. The syntax is `var: _env:ENV_VAR:default` ## 0.8.15.3 * Give a warning when compiling with GHCJS ## 0.8.15.2 * Canonicalise Monad instances [#76](https://github.com/snoyberg/yaml/pull/76) ## 0.8.15.1 * Compile with aeson below 0.7 [#70](https://github.com/snoyberg/yaml/pull/70) ## 0.8.15 * Parse `Scientific` directly, avoiding loss in precision. [#68](https://github.com/snoyberg/yaml/pull/68) ## 0.8.14 * Pretty print improvements for exceptions [#67](https://github.com/snoyberg/yaml/pull/67) ## 0.8.13 * Pretty module [#66](https://github.com/snoyberg/yaml/pull/66) ## 0.8.12 * Proper handling of `String "+123"` [#64](https://github.com/snoyberg/yaml/issues/64) ## 0.8.11 * Function to print prettier parse exceptions [#59](https://github.com/snoyberg/yaml/pull/59) ## 0.8.10 Add the Data.Yaml.Include module yaml-0.8.20/LICENSE0000644000000000000000000000253013001717724011740 0ustar0000000000000000The following license covers this documentation, and the source code, except where otherwise indicated. Copyright 2008, Michael Snoyman. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. yaml-0.8.20/README.md0000644000000000000000000000204513001717724012213 0ustar0000000000000000## yaml Provides support for parsing and emitting Yaml documents. This package includes the [full libyaml C library version 0.1.7 by Kirill Simonov](http://pyyaml.org/wiki/LibYAML) in the package so you don't need to worry about any non-Haskell dependencies. The package is broken down into two primary modules. `Data.Yaml` provides a high-level interface based around the JSON datatypes provided by the `aeson` package. `Text.Libyaml` provides a lower-level, streaming interface. For most users, `Data.Yaml` is recommended. ### Examples Usage examples can be found in the `Data.Yaml` documentation or in the [examples](./examples) directory. ### Additional modules * `Data.Yaml.Include` supports adding `!include` directives to your YAML files. * `Data.Yaml.Builder` and `Data.Yaml.Parser` allow more fine-grained control of parsing an rendering, as opposed to just using the aeson typeclass and datatype system for parsing and rendering. * `Data.Yaml.Aeson` is currently a re-export of `Data.Yaml` to explicitly choose to use the aeson-compatible API. yaml-0.8.20/Setup.lhs0000644000000000000000000000016213001717724012542 0ustar0000000000000000#!/usr/bin/env runhaskell > module Main where > import Distribution.Simple > main :: IO () > main = defaultMain yaml-0.8.20/yaml.cabal0000644000000000000000000001165713001717724012673 0ustar0000000000000000name: yaml version: 0.8.20 license: BSD3 license-file: LICENSE author: Michael Snoyman , Anton Ageev ,Kirill Simonov maintainer: Michael Snoyman synopsis: Support for parsing and rendering YAML documents. description: Please see the README.md file. category: Web stability: stable cabal-version: >= 1.8 build-type: Simple homepage: http://github.com/snoyberg/yaml/ extra-source-files: c/helper.h libyaml/yaml_private.h libyaml/yaml.h libyaml/LICENSE test/largest-string.yaml test/json.yaml test/resources/foo.yaml test/resources/bar.yaml test/resources/baz.yaml test/resources/accent/foo.yaml test/resources/loop/foo.yaml test/resources/loop/bar.yaml README.md ChangeLog.md flag no-exe description: don't install the yaml2json or json2yaml executables default: False flag no-examples description: don't build the examples default: True flag system-libyaml description: Use the system-wide libyaml instead of the bundled copy default: False flag no-unicode description: Don't enable unicode output. Instead, unicode characters will be escaped. default: False library build-depends: base >= 4 && < 5 , transformers >= 0.1 , bytestring >= 0.9.1.4 , conduit >= 1.1.0 && < 1.3 , resourcet >= 0.3 && < 1.2 , aeson >= 0.7 , containers , unordered-containers , vector , text , attoparsec >= 0.11.3.0 , scientific , filepath , directory , enclosed-exceptions , semigroups exposed-modules: Text.Libyaml Data.Yaml Data.Yaml.Aeson Data.Yaml.Builder Data.Yaml.Config Data.Yaml.Include Data.Yaml.Parser Data.Yaml.Pretty if impl(ghc >= 7.8.1) build-depends: template-haskell >= 2.8.0.0 exposed-modules: Data.Yaml.TH other-modules: Data.Yaml.Internal ghc-options: -Wall c-sources: c/helper.c include-dirs: c if flag(no-unicode) cpp-options: -D__NO_UNICODE__ if flag(system-libyaml) pkgconfig-depends: yaml-0.1 else c-sources: libyaml/api.c, libyaml/dumper.c, libyaml/emitter.c, libyaml/loader.c, libyaml/parser.c, libyaml/reader.c, libyaml/scanner.c, libyaml/writer.c include-dirs: libyaml if os(windows) cpp-options: -DWINDOWS executable yaml2json if flag(no-exe) Buildable: False else Buildable: True hs-source-dirs: exe main-is: yaml2json.hs build-depends: base >= 4 && < 5 , yaml , bytestring >= 0.9.1.4 , aeson >= 0.7 executable json2yaml if flag(no-exe) Buildable: False else Buildable: True hs-source-dirs: exe main-is: json2yaml.hs build-depends: base >= 4 && < 5 , yaml , bytestring >= 0.9.1.4 , aeson >= 0.7 test-suite spec type: exitcode-stdio-1.0 hs-source-dirs: test main-is: Spec.hs other-modules: Data.YamlSpec Data.Yaml.IncludeSpec cpp-options: -DTEST build-depends: hspec >= 1.3 , HUnit , base >= 4 && < 5 , transformers >= 0.1 , bytestring >= 0.9.1.4 , conduit , yaml , text , aeson >= 0.7 , unordered-containers , directory , vector , resourcet , aeson-qq , mockery , base-compat , temporary ghc-options: -Wall executable examples if flag(no-examples) Buildable: False else Buildable: True build-depends: base , bytestring , raw-strings-qq , text , yaml hs-source-dirs: examples main-is: Main.hs other-modules: Config Simple ghc-options: -Wall source-repository head type: git location: https://github.com/snoyberg/yaml yaml-0.8.20/c/0000755000000000000000000000000013001717724011155 5ustar0000000000000000yaml-0.8.20/c/helper.c0000644000000000000000000000521413001717724012602 0ustar0000000000000000#include #include #include #include "helper.h" void buffer_init(buffer_t *buffer) { buffer->buff = 0; buffer->size = buffer->used = 0; } int buffer_append(void *ext, unsigned char *str, size_t size) { buffer_t *b = ext; int new_size, new_used; unsigned char *tmp; new_used = b->used + size; for (new_size = b->size ? b->size : 8; new_size < new_used; new_size *= 2); if (new_size != b->size) { tmp = realloc(b->buff, new_size); if (!tmp) return 0; b->buff = tmp; b->size = new_size; } memcpy(b->buff + b->used, str, size); b->used = new_used; return 1; } unsigned char * get_buffer_buff(buffer_t *b) { return b->buff; } unsigned int get_buffer_used(buffer_t *b) { return b->used; } void my_emitter_set_output(yaml_emitter_t *e, buffer_t *b) { yaml_emitter_set_output(e, buffer_append, b); } char const * get_parser_error_problem(yaml_parser_t *p) { return p->problem; } char const * get_parser_error_context(yaml_parser_t *p) { return p->context; } unsigned int get_parser_error_index(yaml_parser_t *p) { return p->problem_mark.index; } unsigned int get_parser_error_line(yaml_parser_t *p) { return p->problem_mark.line; } unsigned int get_parser_error_column(yaml_parser_t *p) { return p->problem_mark.column; } char const * get_emitter_error(yaml_emitter_t *e) { return e->problem; } int simple_document_start(yaml_event_t *e) { return yaml_document_start_event_initialize (e, 0, 0, 0, 1); } int get_event_type(yaml_event_t *e) { return e->type; } unsigned char * get_scalar_value(yaml_event_t *e) { return e->data.scalar.value; } unsigned long get_scalar_length(yaml_event_t *e) { return e->data.scalar.length; } unsigned char * get_scalar_tag(yaml_event_t *e) { unsigned char *s = e->data.scalar.tag; if (!s) s = (unsigned char *) ""; return s; } unsigned long get_scalar_tag_len(yaml_event_t *e) { return strlen((char *) get_scalar_tag(e)); } int get_scalar_style(yaml_event_t *e) { return e->data.scalar.style; } unsigned char * get_scalar_anchor(yaml_event_t *e) { return e->data.scalar.anchor; } unsigned char * get_sequence_start_anchor(yaml_event_t *e) { return e->data.sequence_start.anchor; } unsigned char * get_mapping_start_anchor(yaml_event_t *e) { return e->data.mapping_start.anchor; } unsigned char * get_alias_anchor(yaml_event_t *e) { return e->data.alias.anchor; } int yaml_parser_set_input_filename(yaml_parser_t *parser, const char *filename) { FILE *in = fopen(filename, "r"); if (!in) return 0; yaml_parser_set_input_file(parser, in); return 1; } int fclose_helper(FILE *file) { if (! file) return 0; return fclose(file); } yaml-0.8.20/c/helper.h0000644000000000000000000000225713001717724012613 0ustar0000000000000000#ifndef __HELPER_H__ #define __HELPER_H__ #include typedef struct buffer_s { unsigned char *buff; unsigned int size, used; } buffer_t; void buffer_init(buffer_t *buffer); int buffer_append(void *ext, unsigned char *str, size_t size); unsigned char * get_buffer_buff(buffer_t *b); unsigned int get_buffer_used(buffer_t *b); void my_emitter_set_output(yaml_emitter_t *e, buffer_t *b); char const * get_parser_error_problem(yaml_parser_t *p); char const * get_parser_error_context(yaml_parser_t *p); unsigned int get_parser_error_offset(yaml_parser_t *p); char const * get_emitter_error(yaml_emitter_t *e); int simple_document_start(yaml_event_t *e); int get_event_type(yaml_event_t *e); unsigned char * get_scalar_value(yaml_event_t *e); unsigned long get_scalar_length(yaml_event_t *e); unsigned char * get_scalar_tag(yaml_event_t *e); unsigned long get_scalar_tag_len(yaml_event_t *e); int get_scalar_style(yaml_event_t *e); unsigned char * get_scalar_anchor(yaml_event_t *e); unsigned char * get_sequence_start_anchor(yaml_event_t *e); unsigned char * get_mapping_start_anchor(yaml_event_t *e); unsigned char * get_alias_anchor(yaml_event_t *e); #endif /* __HELPER_H__ */ yaml-0.8.20/Data/0000755000000000000000000000000013001717724011604 5ustar0000000000000000yaml-0.8.20/Data/Yaml.hs0000644000000000000000000001415713001717724013052 0ustar0000000000000000{-# LANGUAGE CPP #-} {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE OverloadedStrings #-} -- | Provides a high-level interface for processing YAML files. -- -- This module reuses most of the infrastructure from the @aeson@ package. -- This means that you can use all of the existing tools for JSON -- processing for processing YAML files. As a result, much of the -- documentation below mentions JSON; do not let that confuse you, it's -- intentional. -- -- For the most part, YAML content translates directly into JSON, and -- therefore there is very little data loss. If you need to deal with YAML -- more directly (e.g., directly deal with aliases), you should use the -- "Text.Libyaml" module instead. -- -- For documentation on the @aeson@ types, functions, classes, and -- operators, please see the @Data.Aeson@ module of the @aeson@ package. -- -- Look in the examples directory of the source repository for some initial -- pointers on how to use this library. #if (defined (ghcjs_HOST_OS)) module Data.Yaml {-# WARNING "GHCJS is not supported yet (will break at runtime once called)." #-} #else module Data.Yaml #endif ( -- * Types Value (..) , Parser , Object , Array , ParseException(..) , prettyPrintParseException , YamlException (..) , YamlMark (..) -- * Constructors and accessors , object , array , (.=) , (.:) , (.:?) , (.!=) -- * Parsing , parseMonad , parseEither , parseMaybe -- * Classes , ToJSON (..) , FromJSON (..) -- * Encoding/decoding , encode , encodeFile , decode , decodeFile -- ** Better error information , decodeEither , decodeEither' , decodeFileEither -- ** More control over decoding , decodeHelper ) where #if !MIN_VERSION_base(4,8,0) import Control.Applicative((<$>)) #endif import Control.Exception import Control.Monad.Trans.Resource (runResourceT) import Data.Aeson ( Value (..), ToJSON (..), FromJSON (..), object , (.=) , (.:) , (.:?) , (.!=) , Object, Array ) import Data.Aeson.Encode (encodeToTextBuilder) import Data.Aeson.Types (Pair, parseMaybe, parseEither, Parser) import Data.ByteString (ByteString) import qualified Data.Conduit as C import qualified Data.Conduit.List as CL import qualified Data.HashMap.Strict as M import qualified Data.HashSet as HashSet import Data.Text.Encoding (encodeUtf8) import qualified Data.Text.Encoding as TE import qualified Data.Text.Lazy as TL import Data.Text.Lazy.Builder (toLazyText) import qualified Data.Vector as V import System.IO.Unsafe (unsafePerformIO) import Data.Yaml.Internal import Text.Libyaml hiding (encode, decode, encodeFile, decodeFile) import qualified Text.Libyaml as Y encode :: ToJSON a => a -> ByteString encode obj = unsafePerformIO $ runResourceT $ CL.sourceList (objToEvents $ toJSON obj) C.$$ Y.encode encodeFile :: ToJSON a => FilePath -> a -> IO () encodeFile fp obj = runResourceT $ CL.sourceList (objToEvents $ toJSON obj) C.$$ Y.encodeFile fp objToEvents :: Value -> [Y.Event] objToEvents o = (:) EventStreamStart . (:) EventDocumentStart $ objToEvents' o [ EventDocumentEnd , EventStreamEnd ] {- FIXME scalarToEvent :: YamlScalar -> Event scalarToEvent (YamlScalar v t s) = EventScalar v t s Nothing -} objToEvents' :: Value -> [Y.Event] -> [Y.Event] --objToEvents' (Scalar s) rest = scalarToEvent s : rest objToEvents' (Array list) rest = EventSequenceStart Nothing : foldr objToEvents' (EventSequenceEnd : rest) (V.toList list) objToEvents' (Object pairs) rest = EventMappingStart Nothing : foldr pairToEvents (EventMappingEnd : rest) (M.toList pairs) -- Empty strings need special handling to ensure they get quoted. This avoids: -- https://github.com/snoyberg/yaml/issues/24 objToEvents' (String "") rest = EventScalar "" NoTag SingleQuoted Nothing : rest objToEvents' (String s) rest = event : rest where event -- Make sure that special strings are encoded as strings properly. -- See: https://github.com/snoyberg/yaml/issues/31 | s `HashSet.member` specialStrings || isNumeric s = EventScalar (encodeUtf8 s) NoTag SingleQuoted Nothing | otherwise = EventScalar (encodeUtf8 s) StrTag PlainNoTag Nothing objToEvents' Null rest = EventScalar "null" NullTag PlainNoTag Nothing : rest objToEvents' (Bool True) rest = EventScalar "true" BoolTag PlainNoTag Nothing : rest objToEvents' (Bool False) rest = EventScalar "false" BoolTag PlainNoTag Nothing : rest -- Use aeson's implementation which gets rid of annoying decimal points objToEvents' n@Number{} rest = EventScalar (TE.encodeUtf8 $ TL.toStrict $ toLazyText $ encodeToTextBuilder n) IntTag PlainNoTag Nothing : rest pairToEvents :: Pair -> [Y.Event] -> [Y.Event] pairToEvents (k, v) rest = EventScalar (encodeUtf8 k) StrTag PlainNoTag Nothing : objToEvents' v rest decode :: FromJSON a => ByteString -> Maybe a decode bs = unsafePerformIO $ either (const Nothing) id <$> decodeHelper_ (Y.decode bs) decodeFile :: FromJSON a => FilePath -> IO (Maybe a) decodeFile fp = decodeHelper (Y.decodeFile fp) >>= either throwIO (return . either (const Nothing) id) -- | A version of 'decodeFile' which should not throw runtime exceptions. -- -- Since 0.8.4 decodeFileEither :: FromJSON a => FilePath -> IO (Either ParseException a) decodeFileEither = decodeHelper_ . Y.decodeFile decodeEither :: FromJSON a => ByteString -> Either String a decodeEither bs = unsafePerformIO $ either (Left . prettyPrintParseException) id <$> decodeHelper (Y.decode bs) -- | More helpful version of 'decodeEither' which returns the 'YamlException'. -- -- Since 0.8.3 decodeEither' :: FromJSON a => ByteString -> Either ParseException a decodeEither' = either Left (either (Left . AesonException) Right) . unsafePerformIO . decodeHelper . Y.decode array :: [Value] -> Value array = Array . V.fromList parseMonad :: Monad m => (a -> Parser b) -> a -> m b parseMonad p = either fail return . parseEither p yaml-0.8.20/Data/Yaml/0000755000000000000000000000000013001717724012506 5ustar0000000000000000yaml-0.8.20/Data/Yaml/Aeson.hs0000644000000000000000000000030113001717724014101 0ustar0000000000000000-- | Just a re-export of @Data.Yaml@. In the future, this will be the canonical -- name for that module\'s contents. module Data.Yaml.Aeson ( module Data.Yaml ) where import Data.Yaml yaml-0.8.20/Data/Yaml/Builder.hs0000644000000000000000000000744613001717724014443 0ustar0000000000000000{-# LANGUAGE FlexibleInstances #-} {-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE CPP #-} -- | NOTE: This module is a highly experimental preview release. It may change -- drastically, or be entirely removed, in a future release. module Data.Yaml.Builder ( YamlBuilder (..) , ToYaml (..) , mapping , array , string , bool , null , scientific , number , toByteString , writeYamlFile , (.=) ) where import Prelude hiding (null) import Control.Arrow (second) import Control.Monad.Trans.Resource (runResourceT) import Data.Aeson.Encode (encodeToTextBuilder) import Data.Aeson.Types (Value(..)) import Data.ByteString (ByteString) import qualified Data.ByteString.Char8 as S8 import Data.Conduit import qualified Data.HashSet as HashSet import Data.Scientific (Scientific) import Data.Text (Text) import Data.Text.Encoding (encodeUtf8) import qualified Data.Text.Encoding as TE import qualified Data.Text.Lazy as TL import Data.Text.Lazy.Builder (toLazyText) import System.IO.Unsafe (unsafePerformIO) import Data.Yaml.Internal import Text.Libyaml (.=) :: ToYaml a => Text -> a -> (Text, YamlBuilder) k .= v = (k, toYaml v) newtype YamlBuilder = YamlBuilder { unYamlBuilder :: [Event] -> [Event] } class ToYaml a where toYaml :: a -> YamlBuilder instance ToYaml YamlBuilder where toYaml = id instance ToYaml a => ToYaml [(Text, a)] where toYaml = mapping . map (second toYaml) instance ToYaml a => ToYaml [a] where toYaml = array . map toYaml instance ToYaml Text where toYaml = string instance ToYaml Int where toYaml i = YamlBuilder (EventScalar (S8.pack $ show i) IntTag PlainNoTag Nothing:) mapping :: [(Text, YamlBuilder)] -> YamlBuilder mapping pairs = YamlBuilder $ \rest -> EventMappingStart Nothing : foldr addPair (EventMappingEnd : rest) pairs where addPair (key, YamlBuilder value) after = EventScalar (encodeUtf8 key) StrTag PlainNoTag Nothing : value after array :: [YamlBuilder] -> YamlBuilder array bs = YamlBuilder $ (EventSequenceStart Nothing:) . flip (foldr go) bs . (EventSequenceEnd:) where go (YamlBuilder b) = b string :: Text -> YamlBuilder -- Empty strings need special handling to ensure they get quoted. This avoids: -- https://github.com/snoyberg/yaml/issues/24 string "" = YamlBuilder (EventScalar "" NoTag SingleQuoted Nothing :) string s = YamlBuilder (event :) where event -- Make sure that special strings are encoded as strings properly. -- See: https://github.com/snoyberg/yaml/issues/31 | s `HashSet.member` specialStrings || isNumeric s = EventScalar (encodeUtf8 s) NoTag SingleQuoted Nothing | otherwise = EventScalar (encodeUtf8 s) StrTag PlainNoTag Nothing -- Use aeson's implementation which gets rid of annoying decimal points scientific :: Scientific -> YamlBuilder scientific n = YamlBuilder (EventScalar (TE.encodeUtf8 $ TL.toStrict $ toLazyText $ encodeToTextBuilder (Number n)) IntTag PlainNoTag Nothing :) {-# DEPRECATED number "Use scientific" #-} number :: Scientific -> YamlBuilder number = scientific bool :: Bool -> YamlBuilder bool True = YamlBuilder (EventScalar "true" BoolTag PlainNoTag Nothing :) bool False = YamlBuilder (EventScalar "false" BoolTag PlainNoTag Nothing :) null :: YamlBuilder null = YamlBuilder (EventScalar "null" NullTag PlainNoTag Nothing :) toEvents :: YamlBuilder -> [Event] toEvents (YamlBuilder front) = EventStreamStart : EventDocumentStart : front [EventDocumentEnd, EventStreamEnd] toSource :: (Monad m, ToYaml a) => a -> Source m Event toSource = mapM_ yield . toEvents . toYaml toByteString :: ToYaml a => a -> ByteString toByteString yb = unsafePerformIO $ runResourceT $ toSource yb $$ encode writeYamlFile :: ToYaml a => FilePath -> a -> IO () writeYamlFile fp yb = runResourceT $ toSource yb $$ encodeFile fp yaml-0.8.20/Data/Yaml/Config.hs0000644000000000000000000001626613001717724014262 0ustar0000000000000000{-# LANGUAGE CPP #-} {-# LANGUAGE OverloadedStrings #-} -- | Functionality for using YAML as configuration files -- -- In particular, merging environment variables with yaml values -- -- 'loadYamlSettings' is a high-level API for loading YAML and merging environment variables. -- A yaml value of @_env:ENV_VAR:default@ will lookup the environment variable @ENV_VAR@. -- -- On a historical note, this code was taken directly from the yesod web framework's configuration module. module Data.Yaml.Config ( -- * High-level loadYamlSettings , loadYamlSettingsArgs -- ** EnvUsage , EnvUsage , ignoreEnv , useEnv , requireEnv , useCustomEnv , requireCustomEnv -- * Lower level , applyCurrentEnv , getCurrentEnv , applyEnvValue ) where #if __GLASGOW_HASKELL__ < 710 import Control.Applicative ((<$>)) import Data.Monoid #endif import Data.Semigroup import Data.List.NonEmpty (nonEmpty) import Data.Aeson import qualified Data.HashMap.Strict as H import Data.Text (Text, pack) import System.Environment (getArgs, getEnvironment) import Control.Arrow ((***)) import Control.Monad (forM) import Control.Exception (throwIO) import Data.Text.Encoding (encodeUtf8) import qualified Data.Yaml as Y import qualified Data.Yaml.Include as YI import Data.Maybe (fromMaybe) import qualified Data.Text as T newtype MergedValue = MergedValue { getMergedValue :: Value } instance Semigroup MergedValue where MergedValue x <> MergedValue y = MergedValue $ mergeValues x y -- | Left biased mergeValues :: Value -> Value -> Value mergeValues (Object x) (Object y) = Object $ H.unionWith mergeValues x y mergeValues x _ = x -- | Override environment variable placeholders in the given @Value@ with -- values from the environment. -- -- If the first argument is @True@, then all placeholders _must_ be provided by -- the actual environment. Otherwise, default values from the @Value@ will be -- used. -- -- @since 0.8.16 applyEnvValue :: Bool -- ^ require an environment variable to be present? -> H.HashMap Text Text -> Value -> Value applyEnvValue requireEnv' env = goV where goV (Object o) = Object $ goV <$> o goV (Array a) = Array (goV <$> a) goV (String t1) = fromMaybe (String t1) $ do t2 <- T.stripPrefix "_env:" t1 let (name, t3) = T.break (== ':') t2 mdef = fmap parseValue $ T.stripPrefix ":" t3 Just $ case H.lookup name env of Just val -> -- If the default value parses as a String, we treat the -- environment variable as a raw value and do not parse it. -- This means that things like numeric passwords just work. -- However, for originally numerical or boolean values (e.g., -- port numbers), we still perform a normal YAML parse. -- -- For details, see: -- https://github.com/yesodweb/yesod/issues/1061 case mdef of Just (String _) -> String val _ -> parseValue val Nothing -> case mdef of Just val | not requireEnv' -> val _ -> Null goV v = v parseValue val = fromMaybe (String val) $ Y.decode $ encodeUtf8 val -- | Get the actual environment as a @HashMap@ from @Text@ to @Text@. -- -- @since 0.8.16 getCurrentEnv :: IO (H.HashMap Text Text) getCurrentEnv = fmap (H.fromList . map (pack *** pack)) getEnvironment -- | A convenience wrapper around 'applyEnvValue' and 'getCurrentEnv' -- -- @since 0.8.16 applyCurrentEnv :: Bool -- ^ require an environment variable to be present? -> Value -> IO Value applyCurrentEnv requireEnv' orig = flip (applyEnvValue requireEnv') orig <$> getCurrentEnv -- | Defines how we want to use the environment variables when loading a config -- file. Use the smart constructors provided by this module. -- -- @since 0.8.16 data EnvUsage = IgnoreEnv | UseEnv | RequireEnv | UseCustomEnv (H.HashMap Text Text) | RequireCustomEnv (H.HashMap Text Text) -- | Do not use any environment variables, instead relying on defaults values -- in the config file. -- -- @since 0.8.16 ignoreEnv :: EnvUsage ignoreEnv = IgnoreEnv -- | Use environment variables when available, otherwise use defaults. -- -- @since 0.8.16 useEnv :: EnvUsage useEnv = UseEnv -- | Do not use default values from the config file, but instead take all -- overrides from the environment. If a value is missing, loading the file will -- throw an exception. -- -- @since 0.8.16 requireEnv :: EnvUsage requireEnv = RequireEnv -- | Same as 'useEnv', but instead of the actual environment, use the provided -- @HashMap@ as the environment. -- -- @since 0.8.16 useCustomEnv :: H.HashMap Text Text -> EnvUsage useCustomEnv = UseCustomEnv -- | Same as 'requireEnv', but instead of the actual environment, use the -- provided @HashMap@ as the environment. -- -- @since 0.8.16 requireCustomEnv :: H.HashMap Text Text -> EnvUsage requireCustomEnv = RequireCustomEnv -- | Load the settings from the following three sources: -- -- * Run time config files -- -- * Run time environment variables -- -- * The default compile time config file -- -- For example, to load up settings from @config/foo.yaml@ and allow overriding -- from the actual environment, you can use: -- -- > loadYamlSettings ["config/foo.yaml"] [] useEnv -- -- @since 0.8.16 loadYamlSettings :: FromJSON settings => [FilePath] -- ^ run time config files to use, earlier files have precedence -> [Value] -- ^ any other values to use, usually from compile time config. overridden by files -> EnvUsage -> IO settings loadYamlSettings runTimeFiles compileValues envUsage = do runValues <- forM runTimeFiles $ \fp -> do eres <- YI.decodeFileEither fp case eres of Left e -> do putStrLn $ "loadYamlSettings: Could not parse file as YAML: " ++ fp throwIO e Right value -> return value value' <- case nonEmpty $ map MergedValue $ runValues ++ compileValues of Nothing -> error "loadYamlSettings: No configuration provided" Just ne -> return $ getMergedValue $ sconcat ne value <- case envUsage of IgnoreEnv -> return $ applyEnvValue False mempty value' UseEnv -> applyCurrentEnv False value' RequireEnv -> applyCurrentEnv True value' UseCustomEnv env -> return $ applyEnvValue False env value' RequireCustomEnv env -> return $ applyEnvValue True env value' case fromJSON value of Error s -> error $ "Could not convert to AppSettings: " ++ s Success settings -> return settings -- | Same as @loadYamlSettings@, but get the list of runtime config files from -- the command line arguments. -- -- @since 0.8.17 loadYamlSettingsArgs :: FromJSON settings => [Value] -- ^ any other values to use, usually from compile time config. overridden by files -> EnvUsage -- ^ use environment variables -> IO settings loadYamlSettingsArgs values env = do args <- getArgs loadYamlSettings args values env yaml-0.8.20/Data/Yaml/Include.hs0000644000000000000000000000377213001717724014436 0ustar0000000000000000{-# LANGUAGE RankNTypes #-} module Data.Yaml.Include (decodeFile, decodeFileEither) where import Control.Exception (throwIO) import Control.Monad (when) import Control.Monad.IO.Class (liftIO) import Control.Monad.Trans.Resource (MonadResource) import Data.Aeson (FromJSON) import Data.Conduit import qualified Data.Conduit.List as CL import Data.Text (unpack) import Data.Text.Encoding (decodeUtf8) import System.Directory import System.FilePath import Data.Yaml.Internal (ParseException(..), decodeHelper_, decodeHelper) import Text.Libyaml hiding (decodeFile) import qualified Text.Libyaml as Y eventsFromFile :: MonadResource m => FilePath -> Producer m Event eventsFromFile = go [] where go :: MonadResource m => [FilePath] -> FilePath -> Producer m Event go seen fp = do cfp <- liftIO $ canonicalizePath fp when (cfp `elem` seen) $ do liftIO $ throwIO CyclicIncludes Y.decodeFile cfp $= do awaitForever $ \event -> case event of EventScalar f (UriTag "!include") _ _ -> do let includeFile = takeDirectory cfp unpack (decodeUtf8 f) go (cfp : seen) includeFile $= CL.filter (`notElem` irrelevantEvents) _ -> yield event irrelevantEvents = [EventStreamStart, EventDocumentStart, EventDocumentEnd, EventStreamEnd] -- | Like `Data.Yaml.decodeFile` but with support for relative and absolute -- includes. -- -- The syntax for includes follows the form: -- -- > somekey: !include ./somefile.yaml decodeFile :: FromJSON a => FilePath -> IO (Maybe a) decodeFile fp = decodeHelper (eventsFromFile fp) >>= either throwIO (return . either (const Nothing) id) -- | Like `Data.Yaml.decodeFileEither` but with support for relative and -- absolute includes. -- -- The syntax for includes follows the form: -- -- > somekey: !include ./somefile.yaml decodeFileEither :: FromJSON a => FilePath -> IO (Either ParseException a) decodeFileEither = decodeHelper_ . eventsFromFile yaml-0.8.20/Data/Yaml/Internal.hs0000644000000000000000000002365113001717724014625 0ustar0000000000000000{-# LANGUAGE CPP #-} {-# LANGUAGE DeriveDataTypeable #-} {-# LANGUAGE PatternGuards #-} {-# LANGUAGE OverloadedStrings #-} module Data.Yaml.Internal ( ParseException(..) , prettyPrintParseException , parse , decodeHelper , decodeHelper_ , specialStrings , isNumeric ) where #if !MIN_VERSION_base(4,8,0) import Control.Applicative ((<$>), Applicative(..)) #endif import Control.Exception import Control.Exception.Enclosed import Control.Monad (liftM, ap, unless) import Control.Monad.IO.Class (MonadIO, liftIO) import Control.Monad.Trans.Class (MonadTrans, lift) import Control.Monad.Trans.Resource (ResourceT, runResourceT) import Control.Monad.Trans.State import Data.Aeson import Data.Aeson.Types hiding (parse) import qualified Data.Attoparsec.Text as Atto import Data.ByteString (ByteString) import Data.Char (toUpper) import qualified Data.Conduit as C import qualified Data.Conduit.List as CL import qualified Data.HashMap.Strict as M import qualified Data.HashSet as HashSet import qualified Data.Map as Map import Data.Scientific (Scientific) import Data.Text (Text, pack) import qualified Data.Text as T import Data.Text.Encoding (decodeUtf8With) import Data.Text.Encoding.Error (lenientDecode) import Data.Typeable import qualified Data.Vector as V import qualified Text.Libyaml as Y import Text.Libyaml hiding (encode, decode, encodeFile, decodeFile) data ParseException = NonScalarKey | UnknownAlias { _anchorName :: Y.AnchorName } | UnexpectedEvent { _received :: Maybe Event , _expected :: Maybe Event } | InvalidYaml (Maybe YamlException) | AesonException String | OtherParseException SomeException | NonStringKeyAlias Y.AnchorName Value | CyclicIncludes deriving (Show, Typeable) instance Exception ParseException where #if MIN_VERSION_base(4, 8, 0) displayException = prettyPrintParseException #endif -- | Alternative to 'show' to display a 'ParseException' on the screen. -- Instead of displaying the data constructors applied to their arguments, -- a more textual output is returned. For example, instead of printing: -- -- > InvalidYaml (Just (YamlParseException {yamlProblem = "did not find expected ',' or '}'", yamlContext = "while parsing a flow mapping", yamlProblemMark = YamlMark {yamlIndex = 42, yamlLine = 2, yamlColumn = 12}}))) -- -- It looks more pleasant to print: -- -- > YAML parse exception at line 2, column 12, -- > while parsing a flow mapping: -- > did not find expected ',' or '}' -- -- Since 0.8.11 prettyPrintParseException :: ParseException -> String prettyPrintParseException pe = case pe of NonScalarKey -> "Non scalar key" UnknownAlias anchor -> "Unknown alias `" ++ anchor ++ "`" UnexpectedEvent { _expected = mbExpected, _received = mbUnexpected } -> unlines [ "Unexpected event: expected" , " " ++ show mbExpected , "but received" , " " ++ show mbUnexpected ] InvalidYaml mbYamlError -> case mbYamlError of Nothing -> "Unspecified YAML error" Just yamlError -> case yamlError of YamlException s -> "YAML exception:\n" ++ s YamlParseException problem context mark -> concat [ "YAML parse exception at line " ++ show (yamlLine mark) ++ ", column " ++ show (yamlColumn mark) , case context of "" -> ":\n" -- The context seems to include a leading "while" or similar. _ -> ",\n" ++ context ++ ":\n" , problem ] AesonException s -> "Aeson exception:\n" ++ s OtherParseException exc -> "Generic parse exception:\n" ++ show exc NonStringKeyAlias anchor value -> unlines [ "Non-string key alias:" , " Anchor name: " ++ anchor , " Value: " ++ show value ] CyclicIncludes -> "Cyclic includes" newtype PErrorT m a = PErrorT { runPErrorT :: m (Either ParseException a) } instance Monad m => Functor (PErrorT m) where fmap = liftM instance Monad m => Applicative (PErrorT m) where pure = PErrorT . return . Right (<*>) = ap instance Monad m => Monad (PErrorT m) where return = pure (PErrorT m) >>= f = PErrorT $ do e <- m case e of Left e' -> return $ Left e' Right a -> runPErrorT $ f a instance MonadTrans PErrorT where lift = PErrorT . liftM Right instance MonadIO m => MonadIO (PErrorT m) where liftIO = lift . liftIO type Parse = StateT (Map.Map String Value) (ResourceT IO) requireEvent :: Event -> C.Sink Event Parse () requireEvent e = do f <- CL.head unless (f == Just e) $ liftIO $ throwIO $ UnexpectedEvent f $ Just e parse :: C.Sink Event Parse Value parse = do requireEvent EventStreamStart requireEvent EventDocumentStart res <- parseO requireEvent EventDocumentEnd requireEvent EventStreamEnd return res parseScalar :: ByteString -> Anchor -> Style -> Tag -> C.Sink Event Parse Text parseScalar v a style tag = do let res = decodeUtf8With lenientDecode v case a of Nothing -> return res Just an -> do lift $ modify (Map.insert an $ textToValue style tag res) return res textToValue :: Style -> Tag -> Text -> Value textToValue SingleQuoted _ t = String t textToValue DoubleQuoted _ t = String t textToValue _ StrTag t = String t textToValue Folded _ t = String t textToValue _ _ t | t `elem` ["null", "Null", "NULL", "~", ""] = Null | any (t `isLike`) ["y", "yes", "on", "true"] = Bool True | any (t `isLike`) ["n", "no", "off", "false"] = Bool False | Right x <- textToScientific t = Number x | otherwise = String t where x `isLike` ref = x `elem` [ref, T.toUpper ref, titleCased] where titleCased = toUpper (T.head ref) `T.cons` T.tail ref textToScientific :: Text -> Either String Scientific textToScientific = Atto.parseOnly (Atto.scientific <* Atto.endOfInput) parseO :: C.Sink Event Parse Value parseO = do me <- CL.head case me of Just (EventScalar v tag style a) -> textToValue style tag <$> parseScalar v a style tag Just (EventSequenceStart a) -> parseS a id Just (EventMappingStart a) -> parseM a M.empty Just (EventAlias an) -> do m <- lift get case Map.lookup an m of Nothing -> liftIO $ throwIO $ UnknownAlias an Just v -> return v _ -> liftIO $ throwIO $ UnexpectedEvent me Nothing parseS :: Y.Anchor -> ([Value] -> [Value]) -> C.Sink Event Parse Value parseS a front = do me <- CL.peek case me of Just EventSequenceEnd -> do CL.drop 1 let res = Array $ V.fromList $ front [] case a of Nothing -> return res Just an -> do lift $ modify $ Map.insert an res return res _ -> do o <- parseO parseS a $ front . (:) o parseM :: Y.Anchor -> M.HashMap Text Value -> C.Sink Event Parse Value parseM a front = do me <- CL.peek case me of Just EventMappingEnd -> do CL.drop 1 let res = Object front case a of Nothing -> return res Just an -> do lift $ modify $ Map.insert an res return res _ -> do CL.drop 1 s <- case me of Just (EventScalar v tag style a') -> parseScalar v a' style tag Just (EventAlias an) -> do m <- lift get case Map.lookup an m of Nothing -> liftIO $ throwIO $ UnknownAlias an Just (String t) -> return t Just v -> liftIO $ throwIO $ NonStringKeyAlias an v _ -> liftIO $ throwIO $ UnexpectedEvent me Nothing o <- parseO let al = M.insert s o front al' = if s == pack "<<" then case o of Object l -> M.union front l Array l -> M.union front $ foldl merge' M.empty $ V.toList l _ -> al else al parseM a al' where merge' al (Object om) = M.union al om merge' al _ = al decodeHelper :: FromJSON a => C.Source Parse Y.Event -> IO (Either ParseException (Either String a)) decodeHelper src = do x <- tryAny $ runResourceT $ flip evalStateT Map.empty $ src C.$$ parse case x of Left e | Just pe <- fromException e -> return $ Left pe | Just ye <- fromException e -> return $ Left $ InvalidYaml $ Just (ye :: YamlException) | otherwise -> throwIO e Right y -> return $ Right $ parseEither parseJSON y decodeHelper_ :: FromJSON a => C.Source Parse Event -> IO (Either ParseException a) decodeHelper_ src = do x <- tryAny $ runResourceT $ flip evalStateT Map.empty $ src C.$$ parse return $ case x of Left e | Just pe <- fromException e -> Left pe | Just ye <- fromException e -> Left $ InvalidYaml $ Just (ye :: YamlException) | otherwise -> Left $ OtherParseException e Right y -> either (Left . AesonException) Right (parseEither parseJSON y) -- | Strings which must be escaped so as not to be treated as non-string scalars. specialStrings :: HashSet.HashSet Text specialStrings = HashSet.fromList $ T.words "y Y yes Yes YES n N no No NO true True TRUE false False FALSE on On ON off Off OFF null Null NULL ~" isNumeric :: Text -> Bool isNumeric = T.all isNumeric' where isNumeric' c = ('0' <= c && c <= '9') || c == 'e' || c == 'E' || c == '.' || c == '-' || c == '+' yaml-0.8.20/Data/Yaml/Parser.hs0000644000000000000000000001433613001717724014305 0ustar0000000000000000{-# LANGUAGE CPP #-} {-# LANGUAGE DeriveDataTypeable #-} {-# LANGUAGE OverloadedStrings #-} -- | NOTE: This module is a highly experimental preview release. It may change -- drastically, or be entirely removed, in a future release. module Data.Yaml.Parser where import Control.Applicative import Control.Exception (Exception) import Control.Monad (MonadPlus (..), liftM, ap) import Control.Monad.Trans.Class (lift) import Control.Monad.Trans.Resource (MonadThrow, monadThrow, runResourceT) import Control.Monad.Trans.Writer.Strict (tell, WriterT) import Data.ByteString (ByteString) import Data.Conduit #if MIN_VERSION_conduit(1,1,0) import Data.Conduit.Lift (runWriterC) #define runWriterSC runWriterC #else import Data.Conduit.Lift (runWriterSC) #endif import qualified Data.Map as Map #if !MIN_VERSION_base(4,8,0) import Data.Monoid (Monoid (..)) #endif import Data.Text (Text, pack, unpack) import Data.Text.Encoding (decodeUtf8) import Data.Text.Read (signed, decimal) import Data.Typeable (Typeable) import Text.Libyaml newtype YamlParser a = YamlParser { unYamlParser :: AnchorMap -> Either Text a } instance Functor YamlParser where fmap = liftM instance Applicative YamlParser where pure = YamlParser . const . Right (<*>) = ap instance Alternative YamlParser where empty = fail "empty" (<|>) = mplus instance Monoid (YamlParser a) where mempty = fail "mempty" mappend = mplus instance Monad YamlParser where return = pure YamlParser f >>= g = YamlParser $ \am -> case f am of Left t -> Left t Right x -> unYamlParser (g x) am fail = YamlParser . const . Left . pack instance MonadPlus YamlParser where mzero = fail "mzero" mplus a b = YamlParser $ \am -> case unYamlParser a am of Left _ -> unYamlParser b am x -> x lookupAnchor :: AnchorName -> YamlParser (Maybe YamlValue) lookupAnchor name = YamlParser $ Right . Map.lookup name withAnchor :: AnchorName -> Text -> (YamlValue -> YamlParser a) -> YamlParser a withAnchor name expected f = do mv <- lookupAnchor name case mv of Nothing -> fail $ unpack expected ++ ": unknown alias " ++ name Just v -> f v withMapping :: Text -> ([(Text, YamlValue)] -> YamlParser a) -> YamlValue -> YamlParser a withMapping _ f (Mapping m _) = f m withMapping expected f (Alias an) = withAnchor an expected $ withMapping expected f withMapping expected _ v = typeMismatch expected v withSequence :: Text -> ([YamlValue] -> YamlParser a) -> YamlValue -> YamlParser a withSequence _ f (Sequence s _) = f s withSequence expected f (Alias an) = withAnchor an expected $ withSequence expected f withSequence expected _ v = typeMismatch expected v withText :: Text -> (Text -> YamlParser a) -> YamlValue -> YamlParser a withText _ f (Scalar s _ _ _) = f $ decodeUtf8 s withText expected f (Alias an) = withAnchor an expected $ withText expected f withText expected _ v = typeMismatch expected v typeMismatch :: Text -> YamlValue -> YamlParser a typeMismatch expected v = fail $ concat [ "Expected " , unpack expected , ", but got: " , t ] where t = case v of Mapping _ _ -> "mapping" Sequence _ _ -> "sequence" Scalar _ _ _ _ -> "scalar" Alias _ -> "alias" class FromYaml a where fromYaml :: YamlValue -> YamlParser a instance FromYaml YamlValue where fromYaml = return instance FromYaml a => FromYaml [a] where fromYaml = withSequence "[a]" (mapM fromYaml) instance FromYaml Text where fromYaml = withText "Text" return instance FromYaml Int where fromYaml = withText "Int" go where go t = case signed decimal t of Right (i, "") -> return i _ -> fail $ "Invalid Int: " ++ unpack t data YamlValue = Mapping [(Text, YamlValue)] Anchor | Sequence [YamlValue] Anchor | Scalar ByteString Tag Style Anchor | Alias AnchorName deriving Show type AnchorMap = Map.Map AnchorName YamlValue data RawDoc = RawDoc YamlValue AnchorMap deriving Show parseRawDoc :: (FromYaml a, MonadThrow m) => RawDoc -> m a parseRawDoc (RawDoc val am) = case unYamlParser (fromYaml val) am of Left t -> monadThrow $ FromYamlException t Right x -> return x (.:) :: FromYaml a => [(Text, YamlValue)] -> Text -> YamlParser a o .: k = case lookup k o of Nothing -> fail $ "Key not found: " ++ unpack k Just v -> fromYaml v data YamlParseException = UnexpectedEndOfEvents | UnexpectedEvent Event | FromYamlException Text deriving (Show, Typeable) instance Exception YamlParseException sinkValue :: MonadThrow m => Consumer Event (WriterT AnchorMap m) YamlValue sinkValue = start where start = await >>= maybe (monadThrow UnexpectedEndOfEvents) go tell' Nothing val = return val tell' (Just name) val = do lift $ tell $ Map.singleton name val return val go EventStreamStart = start go EventDocumentStart = start go (EventAlias a) = return $ Alias a go (EventScalar a b c d) = tell' d $ Scalar a b c d go (EventSequenceStart mname) = do vals <- goS id let val = Sequence vals mname tell' mname val go (EventMappingStart mname) = do pairs <- goM id let val = Mapping pairs mname tell' mname val go e = monadThrow $ UnexpectedEvent e goS front = do me <- await case me of Nothing -> monadThrow UnexpectedEndOfEvents Just EventSequenceEnd -> return $ front [] Just e -> do val <- go e goS (front . (val:)) goM front = do mk <- await case mk of Nothing -> monadThrow UnexpectedEndOfEvents Just EventMappingEnd -> return $ front [] Just (EventScalar a b c d) -> do _ <- tell' d $ Scalar a b c d let k = decodeUtf8 a v <- start goM (front . ((k, v):)) Just e -> monadThrow $ UnexpectedEvent e sinkRawDoc :: MonadThrow m => Consumer Event m RawDoc sinkRawDoc = uncurry RawDoc <$> runWriterSC sinkValue readYamlFile :: FromYaml a => FilePath -> IO a readYamlFile fp = runResourceT (decodeFile fp $$ sinkRawDoc) >>= parseRawDoc yaml-0.8.20/Data/Yaml/Pretty.hs0000644000000000000000000000304213001717724014330 0ustar0000000000000000{-# LANGUAGE CPP #-} -- | Prettier YAML encoding. -- -- Since 0.8.13 module Data.Yaml.Pretty ( encodePretty , Config , getConfCompare , setConfCompare , defConfig ) where import Prelude hiding (null) #if !MIN_VERSION_base(4,8,0) import Control.Applicative ((<$>)) #endif import Data.Aeson.Types import Data.ByteString (ByteString) import Data.Function (on) import qualified Data.HashMap.Strict as HM import Data.List (sortBy) #if !MIN_VERSION_base(4,8,0) import Data.Monoid #endif import Data.Text (Text) import qualified Data.Vector as V import Data.Yaml.Builder -- | -- Since 0.8.13 data Config = Config { confCompare :: Text -> Text -> Ordering -- ^ Function used to sort keys in objects } -- | The default configuration: do not sort objects. -- -- Since 0.8.13 defConfig :: Config defConfig = Config mempty -- | -- Since 0.8.13 getConfCompare :: Config -> Text -> Text -> Ordering getConfCompare = confCompare -- | -- Since 0.8.13 setConfCompare :: (Text -> Text -> Ordering) -> Config -> Config setConfCompare cmp c = c { confCompare = cmp } pretty :: Config -> Value -> YamlBuilder pretty cfg = go where go (Object o) = mapping (sortBy (confCompare cfg `on` fst) $ HM.toList $ HM.map go o) go (Array a) = array (go <$> V.toList a) go Null = null go (String s) = string s go (Number n) = scientific n go (Bool b) = bool b -- | Configurable 'encode'. -- -- Since 0.8.13 encodePretty :: ToJSON a => Config -> a -> ByteString encodePretty cfg = toByteString . pretty cfg . toJSON yaml-0.8.20/Data/Yaml/TH.hs0000644000000000000000000000166213001717724013362 0ustar0000000000000000{-# LANGUAGE LambdaCase #-} {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE TemplateHaskell #-} module Data.Yaml.TH ( -- * Decoding decodeFile -- * Re-exports from "Data.Yaml" , Value (..) , Parser , Object , Array , object , array , (.=) , (.:) , (.:?) , (.!=) , FromJSON (..) ) where import Data.Yaml hiding (decodeFile) import Language.Haskell.TH import Language.Haskell.TH.Syntax -- | Decode a @yaml@ file at compile time. Only available on GHC version @7.8.1@ -- or higher. -- -- @since 0.8.19.0 -- -- ==== __Examples__ -- -- @ -- {-\# LANGUAGE TemplateHaskell \#-} -- -- config :: Config -- config = $$('decodeFile' "config.yaml") -- @ decodeFile :: forall a. (Lift a, FromJSON a) => FilePath -> Q (TExp a) decodeFile path = do addDependentFile path runIO (decodeFileEither path) >>= \case Left err -> fail (prettyPrintParseException err) Right x -> fmap TExp (lift (x :: a)) yaml-0.8.20/examples/0000755000000000000000000000000013001717724012551 5ustar0000000000000000yaml-0.8.20/examples/Config.hs0000644000000000000000000000220013001717724014304 0ustar0000000000000000{-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE QuasiQuotes #-} module Config where import Data.Text (Text) import qualified Data.Yaml as Y import Data.Yaml (FromJSON(..), (.:)) import Text.RawString.QQ import Data.ByteString (ByteString) import Control.Applicative import Prelude -- Ensure Applicative is in scope and we have no warnings, before/after AMP. configYaml :: ByteString configYaml = [r| resolver: lts-3.7 packages: - ./yesod-core - ./yesod-static - ./yesod-persistent - ./yesod-newsfeed - ./yesod-form - ./yesod-auth - ./yesod-auth-oauth - ./yesod-sitemap - ./yesod-test - ./yesod-bin - ./yesod - ./yesod-eventsource - ./yesod-websockets # Needed for LTS 2 extra-deps: - wai-app-static-3.1.4.1 |] data Config = Config { resolver :: Text , packages :: [FilePath] , extraDeps :: [Text] } deriving (Eq, Show) instance FromJSON Config where parseJSON (Y.Object v) = Config <$> v .: "resolver" <*> v .: "packages" <*> v .: "extra-deps" parseJSON _ = fail "Expected Object for Config value" main :: IO () main = print $ (Y.decode configYaml :: Maybe Config) yaml-0.8.20/examples/Main.hs0000644000000000000000000000017113001717724013770 0ustar0000000000000000module Main where import qualified Config import qualified Simple main :: IO () main = do Simple.main Config.main yaml-0.8.20/examples/Simple.hs0000644000000000000000000000060413001717724014336 0ustar0000000000000000{-# LANGUAGE OverloadedStrings #-} module Simple where import qualified Data.Yaml as Y main :: IO () main = do print $ (Y.decode "[1,2,3]" :: Maybe [Integer]) -- You can go one step further and decode into a custom type by implementing -- 'FromJSON' for that type. This is also appropriate where extra -- normalization, formatting or manipulation of the YAML is required on decode. yaml-0.8.20/exe/0000755000000000000000000000000013001717724011514 5ustar0000000000000000yaml-0.8.20/exe/json2yaml.hs0000644000000000000000000000124713001717724013772 0ustar0000000000000000import Control.Monad (when) import qualified Data.Aeson as J import qualified Data.ByteString as S import qualified Data.ByteString.Lazy as L import System.Environment (getArgs) import qualified Data.Yaml as Y main :: IO () main = do args <- getArgs when (length args > 2) $ error "Usage: json2yaml [in] [out]" let (input:output:_) = args ++ repeat "-" mval <- fmap J.decode $ case input of "-" -> L.getContents _ -> L.readFile input case mval of Nothing -> error "Invalid input JSON" Just val -> case output of "-" -> S.putStr $ Y.encode (val :: Y.Value) _ -> Y.encodeFile output val yaml-0.8.20/exe/yaml2json.hs0000644000000000000000000000147513001717724013775 0ustar0000000000000000import Prelude hiding (putStr, getContents) import Data.Aeson (encode, Value) import Data.ByteString (getContents) import Data.ByteString.Lazy (putStr) import System.Environment (getArgs) import System.Exit import Data.Yaml (decodeFileEither, decodeEither') helpMessage :: IO () helpMessage = putStrLn "yaml2json FILE\n use - as FILE to indicate stdin" >> exitFailure showJSON :: Show a => Either a Value -> IO b showJSON ejson = case ejson of Left err -> print err >> exitFailure Right res -> putStr (encode (res :: Value)) >> exitSuccess main :: IO () main = do args <- getArgs case args of -- strict getContents will read in all of stdin at once (["-"]) -> getContents >>= showJSON . decodeEither' ([f]) -> decodeFileEither f >>= showJSON _ -> helpMessage yaml-0.8.20/libyaml/0000755000000000000000000000000013001717724012364 5ustar0000000000000000yaml-0.8.20/libyaml/api.c0000644000000000000000000010745113001717724013311 0ustar0000000000000000 #include "yaml_private.h" /* * Get the library version. */ /* * added to support _WIN64 */ #if _WIN64 #define STRDUP _strdup #else #define STRDUP strdup #endif YAML_DECLARE(const char *) yaml_get_version_string(void) { return YAML_VERSION_STRING; } /* * Get the library version numbers. */ YAML_DECLARE(void) yaml_get_version(int *major, int *minor, int *patch) { *major = YAML_VERSION_MAJOR; *minor = YAML_VERSION_MINOR; *patch = YAML_VERSION_PATCH; } /* * Allocate a dynamic memory block. */ YAML_DECLARE(void *) yaml_malloc(size_t size) { return malloc(size ? size : 1); } /* * Reallocate a dynamic memory block. */ YAML_DECLARE(void *) yaml_realloc(void *ptr, size_t size) { return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1); } /* * Free a dynamic memory block. */ YAML_DECLARE(void) yaml_free(void *ptr) { if (ptr) free(ptr); } /* * Duplicate a string. */ YAML_DECLARE(yaml_char_t *) yaml_strdup(const yaml_char_t *str) { if (!str) return NULL; return (yaml_char_t *) STRDUP((char *)str); } /* * Extend a string. */ YAML_DECLARE(int) yaml_string_extend(yaml_char_t **start, yaml_char_t **pointer, yaml_char_t **end) { yaml_char_t *new_start = yaml_realloc(*start, (*end - *start)*2); if (!new_start) return 0; memset(new_start + (*end - *start), 0, *end - *start); *pointer = new_start + (*pointer - *start); *end = new_start + (*end - *start)*2; *start = new_start; return 1; } /* * Append a string B to a string A. */ YAML_DECLARE(int) yaml_string_join( yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end, yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end) { if (*b_start == *b_pointer) return 1; while (*a_end - *a_pointer <= *b_pointer - *b_start) { if (!yaml_string_extend(a_start, a_pointer, a_end)) return 0; } memcpy(*a_pointer, *b_start, *b_pointer - *b_start); *a_pointer += *b_pointer - *b_start; return 1; } /* * Extend a stack. */ YAML_DECLARE(int) yaml_stack_extend(void **start, void **top, void **end) { void *new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2); if (!new_start) return 0; *top = (char *)new_start + ((char *)*top - (char *)*start); *end = (char *)new_start + ((char *)*end - (char *)*start)*2; *start = new_start; return 1; } /* * Extend or move a queue. */ YAML_DECLARE(int) yaml_queue_extend(void **start, void **head, void **tail, void **end) { /* Check if we need to resize the queue. */ if (*start == *head && *tail == *end) { void *new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2); if (!new_start) return 0; *head = (char *)new_start + ((char *)*head - (char *)*start); *tail = (char *)new_start + ((char *)*tail - (char *)*start); *end = (char *)new_start + ((char *)*end - (char *)*start)*2; *start = new_start; } /* Check if we need to move the queue at the beginning of the buffer. */ if (*tail == *end) { if (*head != *tail) { memmove(*start, *head, (char *)*tail - (char *)*head); } *tail = (char *)*tail - (char *)*head + (char *)*start; *head = *start; } return 1; } /* * Create a new parser object. */ YAML_DECLARE(int) yaml_parser_initialize(yaml_parser_t *parser) { assert(parser); /* Non-NULL parser object expected. */ memset(parser, 0, sizeof(yaml_parser_t)); if (!BUFFER_INIT(parser, parser->raw_buffer, INPUT_RAW_BUFFER_SIZE)) goto error; if (!BUFFER_INIT(parser, parser->buffer, INPUT_BUFFER_SIZE)) goto error; if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE)) goto error; if (!STACK_INIT(parser, parser->indents, INITIAL_STACK_SIZE)) goto error; if (!STACK_INIT(parser, parser->simple_keys, INITIAL_STACK_SIZE)) goto error; if (!STACK_INIT(parser, parser->states, INITIAL_STACK_SIZE)) goto error; if (!STACK_INIT(parser, parser->marks, INITIAL_STACK_SIZE)) goto error; if (!STACK_INIT(parser, parser->tag_directives, INITIAL_STACK_SIZE)) goto error; return 1; error: BUFFER_DEL(parser, parser->raw_buffer); BUFFER_DEL(parser, parser->buffer); QUEUE_DEL(parser, parser->tokens); STACK_DEL(parser, parser->indents); STACK_DEL(parser, parser->simple_keys); STACK_DEL(parser, parser->states); STACK_DEL(parser, parser->marks); STACK_DEL(parser, parser->tag_directives); return 0; } /* * Destroy a parser object. */ YAML_DECLARE(void) yaml_parser_delete(yaml_parser_t *parser) { assert(parser); /* Non-NULL parser object expected. */ BUFFER_DEL(parser, parser->raw_buffer); BUFFER_DEL(parser, parser->buffer); while (!QUEUE_EMPTY(parser, parser->tokens)) { yaml_token_delete(&DEQUEUE(parser, parser->tokens)); } QUEUE_DEL(parser, parser->tokens); STACK_DEL(parser, parser->indents); STACK_DEL(parser, parser->simple_keys); STACK_DEL(parser, parser->states); STACK_DEL(parser, parser->marks); while (!STACK_EMPTY(parser, parser->tag_directives)) { yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives); yaml_free(tag_directive.handle); yaml_free(tag_directive.prefix); } STACK_DEL(parser, parser->tag_directives); memset(parser, 0, sizeof(yaml_parser_t)); } /* * String read handler. */ static int yaml_string_read_handler(void *data, unsigned char *buffer, size_t size, size_t *size_read) { yaml_parser_t *parser = data; if (parser->input.string.current == parser->input.string.end) { *size_read = 0; return 1; } if (size > (size_t)(parser->input.string.end - parser->input.string.current)) { size = parser->input.string.end - parser->input.string.current; } memcpy(buffer, parser->input.string.current, size); parser->input.string.current += size; *size_read = size; return 1; } /* * File read handler. */ static int yaml_file_read_handler(void *data, unsigned char *buffer, size_t size, size_t *size_read) { yaml_parser_t *parser = data; *size_read = fread(buffer, 1, size, parser->input.file); return !ferror(parser->input.file); } /* * Set a string input. */ YAML_DECLARE(void) yaml_parser_set_input_string(yaml_parser_t *parser, const unsigned char *input, size_t size) { assert(parser); /* Non-NULL parser object expected. */ assert(!parser->read_handler); /* You can set the source only once. */ assert(input); /* Non-NULL input string expected. */ parser->read_handler = yaml_string_read_handler; parser->read_handler_data = parser; parser->input.string.start = input; parser->input.string.current = input; parser->input.string.end = input+size; } /* * Set a file input. */ YAML_DECLARE(void) yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file) { assert(parser); /* Non-NULL parser object expected. */ assert(!parser->read_handler); /* You can set the source only once. */ assert(file); /* Non-NULL file object expected. */ parser->read_handler = yaml_file_read_handler; parser->read_handler_data = parser; parser->input.file = file; } /* * Set a generic input. */ YAML_DECLARE(void) yaml_parser_set_input(yaml_parser_t *parser, yaml_read_handler_t *handler, void *data) { assert(parser); /* Non-NULL parser object expected. */ assert(!parser->read_handler); /* You can set the source only once. */ assert(handler); /* Non-NULL read handler expected. */ parser->read_handler = handler; parser->read_handler_data = data; } /* * Set the source encoding. */ YAML_DECLARE(void) yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding) { assert(parser); /* Non-NULL parser object expected. */ assert(!parser->encoding); /* Encoding is already set or detected. */ parser->encoding = encoding; } /* * Create a new emitter object. */ YAML_DECLARE(int) yaml_emitter_initialize(yaml_emitter_t *emitter) { assert(emitter); /* Non-NULL emitter object expected. */ memset(emitter, 0, sizeof(yaml_emitter_t)); if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE)) goto error; if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE)) goto error; if (!STACK_INIT(emitter, emitter->states, INITIAL_STACK_SIZE)) goto error; if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE)) goto error; if (!STACK_INIT(emitter, emitter->indents, INITIAL_STACK_SIZE)) goto error; if (!STACK_INIT(emitter, emitter->tag_directives, INITIAL_STACK_SIZE)) goto error; return 1; error: BUFFER_DEL(emitter, emitter->buffer); BUFFER_DEL(emitter, emitter->raw_buffer); STACK_DEL(emitter, emitter->states); QUEUE_DEL(emitter, emitter->events); STACK_DEL(emitter, emitter->indents); STACK_DEL(emitter, emitter->tag_directives); return 0; } /* * Destroy an emitter object. */ YAML_DECLARE(void) yaml_emitter_delete(yaml_emitter_t *emitter) { assert(emitter); /* Non-NULL emitter object expected. */ BUFFER_DEL(emitter, emitter->buffer); BUFFER_DEL(emitter, emitter->raw_buffer); STACK_DEL(emitter, emitter->states); while (!QUEUE_EMPTY(emitter, emitter->events)) { yaml_event_delete(&DEQUEUE(emitter, emitter->events)); } QUEUE_DEL(emitter, emitter->events); STACK_DEL(emitter, emitter->indents); while (!STACK_EMPTY(empty, emitter->tag_directives)) { yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives); yaml_free(tag_directive.handle); yaml_free(tag_directive.prefix); } STACK_DEL(emitter, emitter->tag_directives); yaml_free(emitter->anchors); memset(emitter, 0, sizeof(yaml_emitter_t)); } /* * String write handler. */ static int yaml_string_write_handler(void *data, unsigned char *buffer, size_t size) { yaml_emitter_t *emitter = data; if (emitter->output.string.size - *emitter->output.string.size_written < size) { memcpy(emitter->output.string.buffer + *emitter->output.string.size_written, buffer, emitter->output.string.size - *emitter->output.string.size_written); *emitter->output.string.size_written = emitter->output.string.size; return 0; } memcpy(emitter->output.string.buffer + *emitter->output.string.size_written, buffer, size); *emitter->output.string.size_written += size; return 1; } /* * File write handler. */ static int yaml_file_write_handler(void *data, unsigned char *buffer, size_t size) { yaml_emitter_t *emitter = data; return (fwrite(buffer, 1, size, emitter->output.file) == size); } /* * Set a string output. */ YAML_DECLARE(void) yaml_emitter_set_output_string(yaml_emitter_t *emitter, unsigned char *output, size_t size, size_t *size_written) { assert(emitter); /* Non-NULL emitter object expected. */ assert(!emitter->write_handler); /* You can set the output only once. */ assert(output); /* Non-NULL output string expected. */ emitter->write_handler = yaml_string_write_handler; emitter->write_handler_data = emitter; emitter->output.string.buffer = output; emitter->output.string.size = size; emitter->output.string.size_written = size_written; *size_written = 0; } /* * Set a file output. */ YAML_DECLARE(void) yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file) { assert(emitter); /* Non-NULL emitter object expected. */ assert(!emitter->write_handler); /* You can set the output only once. */ assert(file); /* Non-NULL file object expected. */ emitter->write_handler = yaml_file_write_handler; emitter->write_handler_data = emitter; emitter->output.file = file; } /* * Set a generic output handler. */ YAML_DECLARE(void) yaml_emitter_set_output(yaml_emitter_t *emitter, yaml_write_handler_t *handler, void *data) { assert(emitter); /* Non-NULL emitter object expected. */ assert(!emitter->write_handler); /* You can set the output only once. */ assert(handler); /* Non-NULL handler object expected. */ emitter->write_handler = handler; emitter->write_handler_data = data; } /* * Set the output encoding. */ YAML_DECLARE(void) yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding) { assert(emitter); /* Non-NULL emitter object expected. */ assert(!emitter->encoding); /* You can set encoding only once. */ emitter->encoding = encoding; } /* * Set the canonical output style. */ YAML_DECLARE(void) yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical) { assert(emitter); /* Non-NULL emitter object expected. */ emitter->canonical = (canonical != 0); } /* * Set the indentation increment. */ YAML_DECLARE(void) yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent) { assert(emitter); /* Non-NULL emitter object expected. */ emitter->best_indent = (1 < indent && indent < 10) ? indent : 2; } /* * Set the preferred line width. */ YAML_DECLARE(void) yaml_emitter_set_width(yaml_emitter_t *emitter, int width) { assert(emitter); /* Non-NULL emitter object expected. */ emitter->best_width = (width >= 0) ? width : -1; } /* * Set if unescaped non-ASCII characters are allowed. */ YAML_DECLARE(void) yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode) { assert(emitter); /* Non-NULL emitter object expected. */ emitter->unicode = (unicode != 0); } /* * Set the preferred line break character. */ YAML_DECLARE(void) yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break) { assert(emitter); /* Non-NULL emitter object expected. */ emitter->line_break = line_break; } /* * Destroy a token object. */ YAML_DECLARE(void) yaml_token_delete(yaml_token_t *token) { assert(token); /* Non-NULL token object expected. */ switch (token->type) { case YAML_TAG_DIRECTIVE_TOKEN: yaml_free(token->data.tag_directive.handle); yaml_free(token->data.tag_directive.prefix); break; case YAML_ALIAS_TOKEN: yaml_free(token->data.alias.value); break; case YAML_ANCHOR_TOKEN: yaml_free(token->data.anchor.value); break; case YAML_TAG_TOKEN: yaml_free(token->data.tag.handle); yaml_free(token->data.tag.suffix); break; case YAML_SCALAR_TOKEN: yaml_free(token->data.scalar.value); break; default: break; } memset(token, 0, sizeof(yaml_token_t)); } /* * Check if a string is a valid UTF-8 sequence. * * Check 'reader.c' for more details on UTF-8 encoding. */ static int yaml_check_utf8(yaml_char_t *start, size_t length) { yaml_char_t *end = start+length; yaml_char_t *pointer = start; while (pointer < end) { unsigned char octet; unsigned int width; unsigned int value; size_t k; octet = pointer[0]; width = (octet & 0x80) == 0x00 ? 1 : (octet & 0xE0) == 0xC0 ? 2 : (octet & 0xF0) == 0xE0 ? 3 : (octet & 0xF8) == 0xF0 ? 4 : 0; value = (octet & 0x80) == 0x00 ? octet & 0x7F : (octet & 0xE0) == 0xC0 ? octet & 0x1F : (octet & 0xF0) == 0xE0 ? octet & 0x0F : (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0; if (!width) return 0; if (pointer+width > end) return 0; for (k = 1; k < width; k ++) { octet = pointer[k]; if ((octet & 0xC0) != 0x80) return 0; value = (value << 6) + (octet & 0x3F); } if (!((width == 1) || (width == 2 && value >= 0x80) || (width == 3 && value >= 0x800) || (width == 4 && value >= 0x10000))) return 0; pointer += width; } return 1; } /* * Create STREAM-START. */ YAML_DECLARE(int) yaml_stream_start_event_initialize(yaml_event_t *event, yaml_encoding_t encoding) { yaml_mark_t mark = { 0, 0, 0 }; assert(event); /* Non-NULL event object is expected. */ STREAM_START_EVENT_INIT(*event, encoding, mark, mark); return 1; } /* * Create STREAM-END. */ YAML_DECLARE(int) yaml_stream_end_event_initialize(yaml_event_t *event) { yaml_mark_t mark = { 0, 0, 0 }; assert(event); /* Non-NULL event object is expected. */ STREAM_END_EVENT_INIT(*event, mark, mark); return 1; } /* * Create DOCUMENT-START. */ YAML_DECLARE(int) yaml_document_start_event_initialize(yaml_event_t *event, yaml_version_directive_t *version_directive, yaml_tag_directive_t *tag_directives_start, yaml_tag_directive_t *tag_directives_end, int implicit) { struct { yaml_error_type_t error; } context; yaml_mark_t mark = { 0, 0, 0 }; yaml_version_directive_t *version_directive_copy = NULL; struct { yaml_tag_directive_t *start; yaml_tag_directive_t *end; yaml_tag_directive_t *top; } tag_directives_copy = { NULL, NULL, NULL }; yaml_tag_directive_t value = { NULL, NULL }; assert(event); /* Non-NULL event object is expected. */ assert((tag_directives_start && tag_directives_end) || (tag_directives_start == tag_directives_end)); /* Valid tag directives are expected. */ if (version_directive) { version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t)); if (!version_directive_copy) goto error; version_directive_copy->major = version_directive->major; version_directive_copy->minor = version_directive->minor; } if (tag_directives_start != tag_directives_end) { yaml_tag_directive_t *tag_directive; if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE)) goto error; for (tag_directive = tag_directives_start; tag_directive != tag_directives_end; tag_directive ++) { assert(tag_directive->handle); assert(tag_directive->prefix); if (!yaml_check_utf8(tag_directive->handle, strlen((char *)tag_directive->handle))) goto error; if (!yaml_check_utf8(tag_directive->prefix, strlen((char *)tag_directive->prefix))) goto error; value.handle = yaml_strdup(tag_directive->handle); value.prefix = yaml_strdup(tag_directive->prefix); if (!value.handle || !value.prefix) goto error; if (!PUSH(&context, tag_directives_copy, value)) goto error; value.handle = NULL; value.prefix = NULL; } } DOCUMENT_START_EVENT_INIT(*event, version_directive_copy, tag_directives_copy.start, tag_directives_copy.top, implicit, mark, mark); return 1; error: yaml_free(version_directive_copy); while (!STACK_EMPTY(context, tag_directives_copy)) { yaml_tag_directive_t value = POP(context, tag_directives_copy); yaml_free(value.handle); yaml_free(value.prefix); } STACK_DEL(context, tag_directives_copy); yaml_free(value.handle); yaml_free(value.prefix); return 0; } /* * Create DOCUMENT-END. */ YAML_DECLARE(int) yaml_document_end_event_initialize(yaml_event_t *event, int implicit) { yaml_mark_t mark = { 0, 0, 0 }; assert(event); /* Non-NULL emitter object is expected. */ DOCUMENT_END_EVENT_INIT(*event, implicit, mark, mark); return 1; } /* * Create ALIAS. */ YAML_DECLARE(int) yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor) { yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *anchor_copy = NULL; assert(event); /* Non-NULL event object is expected. */ assert(anchor); /* Non-NULL anchor is expected. */ if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0; anchor_copy = yaml_strdup(anchor); if (!anchor_copy) return 0; ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark); return 1; } /* * Create SCALAR. */ YAML_DECLARE(int) yaml_scalar_event_initialize(yaml_event_t *event, yaml_char_t *anchor, yaml_char_t *tag, yaml_char_t *value, int length, int plain_implicit, int quoted_implicit, yaml_scalar_style_t style) { yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *anchor_copy = NULL; yaml_char_t *tag_copy = NULL; yaml_char_t *value_copy = NULL; assert(event); /* Non-NULL event object is expected. */ /* following line added for Haskell yaml library */ if (!value && !length) value = ""; assert(value); /* Non-NULL anchor is expected. */ if (anchor) { if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error; anchor_copy = yaml_strdup(anchor); if (!anchor_copy) goto error; } if (tag) { if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error; tag_copy = yaml_strdup(tag); if (!tag_copy) goto error; } if (length < 0) { length = strlen((char *)value); } if (!yaml_check_utf8(value, length)) goto error; value_copy = yaml_malloc(length+1); if (!value_copy) goto error; memcpy(value_copy, value, length); value_copy[length] = '\0'; SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, length, plain_implicit, quoted_implicit, style, mark, mark); return 1; error: yaml_free(anchor_copy); yaml_free(tag_copy); yaml_free(value_copy); return 0; } /* * Create SEQUENCE-START. */ YAML_DECLARE(int) yaml_sequence_start_event_initialize(yaml_event_t *event, yaml_char_t *anchor, yaml_char_t *tag, int implicit, yaml_sequence_style_t style) { yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *anchor_copy = NULL; yaml_char_t *tag_copy = NULL; assert(event); /* Non-NULL event object is expected. */ if (anchor) { if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error; anchor_copy = yaml_strdup(anchor); if (!anchor_copy) goto error; } if (tag) { if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error; tag_copy = yaml_strdup(tag); if (!tag_copy) goto error; } SEQUENCE_START_EVENT_INIT(*event, anchor_copy, tag_copy, implicit, style, mark, mark); return 1; error: yaml_free(anchor_copy); yaml_free(tag_copy); return 0; } /* * Create SEQUENCE-END. */ YAML_DECLARE(int) yaml_sequence_end_event_initialize(yaml_event_t *event) { yaml_mark_t mark = { 0, 0, 0 }; assert(event); /* Non-NULL event object is expected. */ SEQUENCE_END_EVENT_INIT(*event, mark, mark); return 1; } /* * Create MAPPING-START. */ YAML_DECLARE(int) yaml_mapping_start_event_initialize(yaml_event_t *event, yaml_char_t *anchor, yaml_char_t *tag, int implicit, yaml_mapping_style_t style) { yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *anchor_copy = NULL; yaml_char_t *tag_copy = NULL; assert(event); /* Non-NULL event object is expected. */ if (anchor) { if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error; anchor_copy = yaml_strdup(anchor); if (!anchor_copy) goto error; } if (tag) { if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error; tag_copy = yaml_strdup(tag); if (!tag_copy) goto error; } MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy, implicit, style, mark, mark); return 1; error: yaml_free(anchor_copy); yaml_free(tag_copy); return 0; } /* * Create MAPPING-END. */ YAML_DECLARE(int) yaml_mapping_end_event_initialize(yaml_event_t *event) { yaml_mark_t mark = { 0, 0, 0 }; assert(event); /* Non-NULL event object is expected. */ MAPPING_END_EVENT_INIT(*event, mark, mark); return 1; } /* * Destroy an event object. */ YAML_DECLARE(void) yaml_event_delete(yaml_event_t *event) { yaml_tag_directive_t *tag_directive; assert(event); /* Non-NULL event object expected. */ switch (event->type) { case YAML_DOCUMENT_START_EVENT: yaml_free(event->data.document_start.version_directive); for (tag_directive = event->data.document_start.tag_directives.start; tag_directive != event->data.document_start.tag_directives.end; tag_directive++) { yaml_free(tag_directive->handle); yaml_free(tag_directive->prefix); } yaml_free(event->data.document_start.tag_directives.start); break; case YAML_ALIAS_EVENT: yaml_free(event->data.alias.anchor); break; case YAML_SCALAR_EVENT: yaml_free(event->data.scalar.anchor); yaml_free(event->data.scalar.tag); yaml_free(event->data.scalar.value); break; case YAML_SEQUENCE_START_EVENT: yaml_free(event->data.sequence_start.anchor); yaml_free(event->data.sequence_start.tag); break; case YAML_MAPPING_START_EVENT: yaml_free(event->data.mapping_start.anchor); yaml_free(event->data.mapping_start.tag); break; default: break; } memset(event, 0, sizeof(yaml_event_t)); } /* * Create a document object. */ YAML_DECLARE(int) yaml_document_initialize(yaml_document_t *document, yaml_version_directive_t *version_directive, yaml_tag_directive_t *tag_directives_start, yaml_tag_directive_t *tag_directives_end, int start_implicit, int end_implicit) { struct { yaml_error_type_t error; } context; struct { yaml_node_t *start; yaml_node_t *end; yaml_node_t *top; } nodes = { NULL, NULL, NULL }; yaml_version_directive_t *version_directive_copy = NULL; struct { yaml_tag_directive_t *start; yaml_tag_directive_t *end; yaml_tag_directive_t *top; } tag_directives_copy = { NULL, NULL, NULL }; yaml_tag_directive_t value = { NULL, NULL }; yaml_mark_t mark = { 0, 0, 0 }; assert(document); /* Non-NULL document object is expected. */ assert((tag_directives_start && tag_directives_end) || (tag_directives_start == tag_directives_end)); /* Valid tag directives are expected. */ if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error; if (version_directive) { version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t)); if (!version_directive_copy) goto error; version_directive_copy->major = version_directive->major; version_directive_copy->minor = version_directive->minor; } if (tag_directives_start != tag_directives_end) { yaml_tag_directive_t *tag_directive; if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE)) goto error; for (tag_directive = tag_directives_start; tag_directive != tag_directives_end; tag_directive ++) { assert(tag_directive->handle); assert(tag_directive->prefix); if (!yaml_check_utf8(tag_directive->handle, strlen((char *)tag_directive->handle))) goto error; if (!yaml_check_utf8(tag_directive->prefix, strlen((char *)tag_directive->prefix))) goto error; value.handle = yaml_strdup(tag_directive->handle); value.prefix = yaml_strdup(tag_directive->prefix); if (!value.handle || !value.prefix) goto error; if (!PUSH(&context, tag_directives_copy, value)) goto error; value.handle = NULL; value.prefix = NULL; } } DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy, tag_directives_copy.start, tag_directives_copy.top, start_implicit, end_implicit, mark, mark); return 1; error: STACK_DEL(&context, nodes); yaml_free(version_directive_copy); while (!STACK_EMPTY(&context, tag_directives_copy)) { yaml_tag_directive_t value = POP(&context, tag_directives_copy); yaml_free(value.handle); yaml_free(value.prefix); } STACK_DEL(&context, tag_directives_copy); yaml_free(value.handle); yaml_free(value.prefix); return 0; } /* * Destroy a document object. */ YAML_DECLARE(void) yaml_document_delete(yaml_document_t *document) { struct { yaml_error_type_t error; } context; yaml_tag_directive_t *tag_directive; context.error = YAML_NO_ERROR; /* Eliminate a compliler warning. */ assert(document); /* Non-NULL document object is expected. */ while (!STACK_EMPTY(&context, document->nodes)) { yaml_node_t node = POP(&context, document->nodes); yaml_free(node.tag); switch (node.type) { case YAML_SCALAR_NODE: yaml_free(node.data.scalar.value); break; case YAML_SEQUENCE_NODE: STACK_DEL(&context, node.data.sequence.items); break; case YAML_MAPPING_NODE: STACK_DEL(&context, node.data.mapping.pairs); break; default: assert(0); /* Should not happen. */ } } STACK_DEL(&context, document->nodes); yaml_free(document->version_directive); for (tag_directive = document->tag_directives.start; tag_directive != document->tag_directives.end; tag_directive++) { yaml_free(tag_directive->handle); yaml_free(tag_directive->prefix); } yaml_free(document->tag_directives.start); memset(document, 0, sizeof(yaml_document_t)); } /** * Get a document node. */ YAML_DECLARE(yaml_node_t *) yaml_document_get_node(yaml_document_t *document, int index) { assert(document); /* Non-NULL document object is expected. */ if (index > 0 && document->nodes.start + index <= document->nodes.top) { return document->nodes.start + index - 1; } return NULL; } /** * Get the root object. */ YAML_DECLARE(yaml_node_t *) yaml_document_get_root_node(yaml_document_t *document) { assert(document); /* Non-NULL document object is expected. */ if (document->nodes.top != document->nodes.start) { return document->nodes.start; } return NULL; } /* * Add a scalar node to a document. */ YAML_DECLARE(int) yaml_document_add_scalar(yaml_document_t *document, yaml_char_t *tag, yaml_char_t *value, int length, yaml_scalar_style_t style) { struct { yaml_error_type_t error; } context; yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *tag_copy = NULL; yaml_char_t *value_copy = NULL; yaml_node_t node; assert(document); /* Non-NULL document object is expected. */ assert(value); /* Non-NULL value is expected. */ if (!tag) { tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG; } if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error; tag_copy = yaml_strdup(tag); if (!tag_copy) goto error; if (length < 0) { length = strlen((char *)value); } if (!yaml_check_utf8(value, length)) goto error; value_copy = yaml_malloc(length+1); if (!value_copy) goto error; memcpy(value_copy, value, length); value_copy[length] = '\0'; SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark); if (!PUSH(&context, document->nodes, node)) goto error; return document->nodes.top - document->nodes.start; error: yaml_free(tag_copy); yaml_free(value_copy); return 0; } /* * Add a sequence node to a document. */ YAML_DECLARE(int) yaml_document_add_sequence(yaml_document_t *document, yaml_char_t *tag, yaml_sequence_style_t style) { struct { yaml_error_type_t error; } context; yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *tag_copy = NULL; struct { yaml_node_item_t *start; yaml_node_item_t *end; yaml_node_item_t *top; } items = { NULL, NULL, NULL }; yaml_node_t node; assert(document); /* Non-NULL document object is expected. */ if (!tag) { tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG; } if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error; tag_copy = yaml_strdup(tag); if (!tag_copy) goto error; if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error; SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end, style, mark, mark); if (!PUSH(&context, document->nodes, node)) goto error; return document->nodes.top - document->nodes.start; error: STACK_DEL(&context, items); yaml_free(tag_copy); return 0; } /* * Add a mapping node to a document. */ YAML_DECLARE(int) yaml_document_add_mapping(yaml_document_t *document, yaml_char_t *tag, yaml_mapping_style_t style) { struct { yaml_error_type_t error; } context; yaml_mark_t mark = { 0, 0, 0 }; yaml_char_t *tag_copy = NULL; struct { yaml_node_pair_t *start; yaml_node_pair_t *end; yaml_node_pair_t *top; } pairs = { NULL, NULL, NULL }; yaml_node_t node; assert(document); /* Non-NULL document object is expected. */ if (!tag) { tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG; } if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error; tag_copy = yaml_strdup(tag); if (!tag_copy) goto error; if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error; MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end, style, mark, mark); if (!PUSH(&context, document->nodes, node)) goto error; return document->nodes.top - document->nodes.start; error: STACK_DEL(&context, pairs); yaml_free(tag_copy); return 0; } /* * Append an item to a sequence node. */ YAML_DECLARE(int) yaml_document_append_sequence_item(yaml_document_t *document, int sequence, int item) { struct { yaml_error_type_t error; } context; assert(document); /* Non-NULL document is required. */ assert(sequence > 0 && document->nodes.start + sequence <= document->nodes.top); /* Valid sequence id is required. */ assert(document->nodes.start[sequence-1].type == YAML_SEQUENCE_NODE); /* A sequence node is required. */ assert(item > 0 && document->nodes.start + item <= document->nodes.top); /* Valid item id is required. */ if (!PUSH(&context, document->nodes.start[sequence-1].data.sequence.items, item)) return 0; return 1; } /* * Append a pair of a key and a value to a mapping node. */ YAML_DECLARE(int) yaml_document_append_mapping_pair(yaml_document_t *document, int mapping, int key, int value) { struct { yaml_error_type_t error; } context; yaml_node_pair_t pair; assert(document); /* Non-NULL document is required. */ assert(mapping > 0 && document->nodes.start + mapping <= document->nodes.top); /* Valid mapping id is required. */ assert(document->nodes.start[mapping-1].type == YAML_MAPPING_NODE); /* A mapping node is required. */ assert(key > 0 && document->nodes.start + key <= document->nodes.top); /* Valid key id is required. */ assert(value > 0 && document->nodes.start + value <= document->nodes.top); /* Valid value id is required. */ pair.key = key; pair.value = value; if (!PUSH(&context, document->nodes.start[mapping-1].data.mapping.pairs, pair)) return 0; return 1; } yaml-0.8.20/libyaml/dumper.c0000644000000000000000000002347413001717724014036 0ustar0000000000000000 #include "yaml_private.h" /* * API functions. */ YAML_DECLARE(int) yaml_emitter_open(yaml_emitter_t *emitter); YAML_DECLARE(int) yaml_emitter_close(yaml_emitter_t *emitter); YAML_DECLARE(int) yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document); /* * Clean up functions. */ static void yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter); /* * Anchor functions. */ static void yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index); static yaml_char_t * yaml_emitter_generate_anchor(yaml_emitter_t *emitter, int anchor_id); /* * Serialize functions. */ static int yaml_emitter_dump_node(yaml_emitter_t *emitter, int index); static int yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor); static int yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node, yaml_char_t *anchor); static int yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node, yaml_char_t *anchor); static int yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node, yaml_char_t *anchor); /* * Issue a STREAM-START event. */ YAML_DECLARE(int) yaml_emitter_open(yaml_emitter_t *emitter) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; assert(emitter); /* Non-NULL emitter object is required. */ assert(!emitter->opened); /* Emitter should not be opened yet. */ STREAM_START_EVENT_INIT(event, YAML_ANY_ENCODING, mark, mark); if (!yaml_emitter_emit(emitter, &event)) { return 0; } emitter->opened = 1; return 1; } /* * Issue a STREAM-END event. */ YAML_DECLARE(int) yaml_emitter_close(yaml_emitter_t *emitter) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; assert(emitter); /* Non-NULL emitter object is required. */ assert(emitter->opened); /* Emitter should be opened. */ if (emitter->closed) return 1; STREAM_END_EVENT_INIT(event, mark, mark); if (!yaml_emitter_emit(emitter, &event)) { return 0; } emitter->closed = 1; return 1; } /* * Dump a YAML document. */ YAML_DECLARE(int) yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; assert(emitter); /* Non-NULL emitter object is required. */ assert(document); /* Non-NULL emitter object is expected. */ emitter->document = document; if (!emitter->opened) { if (!yaml_emitter_open(emitter)) goto error; } if (STACK_EMPTY(emitter, document->nodes)) { if (!yaml_emitter_close(emitter)) goto error; yaml_emitter_delete_document_and_anchors(emitter); return 1; } assert(emitter->opened); /* Emitter should be opened. */ emitter->anchors = yaml_malloc(sizeof(*(emitter->anchors)) * (document->nodes.top - document->nodes.start)); if (!emitter->anchors) goto error; memset(emitter->anchors, 0, sizeof(*(emitter->anchors)) * (document->nodes.top - document->nodes.start)); DOCUMENT_START_EVENT_INIT(event, document->version_directive, document->tag_directives.start, document->tag_directives.end, document->start_implicit, mark, mark); if (!yaml_emitter_emit(emitter, &event)) goto error; yaml_emitter_anchor_node(emitter, 1); if (!yaml_emitter_dump_node(emitter, 1)) goto error; DOCUMENT_END_EVENT_INIT(event, document->end_implicit, mark, mark); if (!yaml_emitter_emit(emitter, &event)) goto error; yaml_emitter_delete_document_and_anchors(emitter); return 1; error: yaml_emitter_delete_document_and_anchors(emitter); return 0; } /* * Clean up the emitter object after a document is dumped. */ static void yaml_emitter_delete_document_and_anchors(yaml_emitter_t *emitter) { int index; if (!emitter->anchors) { yaml_document_delete(emitter->document); emitter->document = NULL; return; } for (index = 0; emitter->document->nodes.start + index < emitter->document->nodes.top; index ++) { yaml_node_t node = emitter->document->nodes.start[index]; if (!emitter->anchors[index].serialized) { yaml_free(node.tag); if (node.type == YAML_SCALAR_NODE) { yaml_free(node.data.scalar.value); } } if (node.type == YAML_SEQUENCE_NODE) { STACK_DEL(emitter, node.data.sequence.items); } if (node.type == YAML_MAPPING_NODE) { STACK_DEL(emitter, node.data.mapping.pairs); } } STACK_DEL(emitter, emitter->document->nodes); yaml_free(emitter->anchors); emitter->anchors = NULL; emitter->last_anchor_id = 0; emitter->document = NULL; } /* * Check the references of a node and assign the anchor id if needed. */ static void yaml_emitter_anchor_node(yaml_emitter_t *emitter, int index) { yaml_node_t *node = emitter->document->nodes.start + index - 1; yaml_node_item_t *item; yaml_node_pair_t *pair; emitter->anchors[index-1].references ++; if (emitter->anchors[index-1].references == 1) { switch (node->type) { case YAML_SEQUENCE_NODE: for (item = node->data.sequence.items.start; item < node->data.sequence.items.top; item ++) { yaml_emitter_anchor_node(emitter, *item); } break; case YAML_MAPPING_NODE: for (pair = node->data.mapping.pairs.start; pair < node->data.mapping.pairs.top; pair ++) { yaml_emitter_anchor_node(emitter, pair->key); yaml_emitter_anchor_node(emitter, pair->value); } break; default: break; } } else if (emitter->anchors[index-1].references == 2) { emitter->anchors[index-1].anchor = (++ emitter->last_anchor_id); } } /* * Generate a textual representation for an anchor. */ #define ANCHOR_TEMPLATE "id%03d" #define ANCHOR_TEMPLATE_LENGTH 16 static yaml_char_t * yaml_emitter_generate_anchor(yaml_emitter_t *emitter, int anchor_id) { yaml_char_t *anchor = yaml_malloc(ANCHOR_TEMPLATE_LENGTH); if (!anchor) return NULL; sprintf((char *)anchor, ANCHOR_TEMPLATE, anchor_id); return anchor; } /* * Serialize a node. */ static int yaml_emitter_dump_node(yaml_emitter_t *emitter, int index) { yaml_node_t *node = emitter->document->nodes.start + index - 1; int anchor_id = emitter->anchors[index-1].anchor; yaml_char_t *anchor = NULL; if (anchor_id) { anchor = yaml_emitter_generate_anchor(emitter, anchor_id); if (!anchor) return 0; } if (emitter->anchors[index-1].serialized) { return yaml_emitter_dump_alias(emitter, anchor); } emitter->anchors[index-1].serialized = 1; switch (node->type) { case YAML_SCALAR_NODE: return yaml_emitter_dump_scalar(emitter, node, anchor); case YAML_SEQUENCE_NODE: return yaml_emitter_dump_sequence(emitter, node, anchor); case YAML_MAPPING_NODE: return yaml_emitter_dump_mapping(emitter, node, anchor); default: assert(0); /* Could not happen. */ break; } return 0; /* Could not happen. */ } /* * Serialize an alias. */ static int yaml_emitter_dump_alias(yaml_emitter_t *emitter, yaml_char_t *anchor) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; ALIAS_EVENT_INIT(event, anchor, mark, mark); return yaml_emitter_emit(emitter, &event); } /* * Serialize a scalar. */ static int yaml_emitter_dump_scalar(yaml_emitter_t *emitter, yaml_node_t *node, yaml_char_t *anchor) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; int plain_implicit = (strcmp((char *)node->tag, YAML_DEFAULT_SCALAR_TAG) == 0); int quoted_implicit = (strcmp((char *)node->tag, YAML_DEFAULT_SCALAR_TAG) == 0); SCALAR_EVENT_INIT(event, anchor, node->tag, node->data.scalar.value, node->data.scalar.length, plain_implicit, quoted_implicit, node->data.scalar.style, mark, mark); return yaml_emitter_emit(emitter, &event); } /* * Serialize a sequence. */ static int yaml_emitter_dump_sequence(yaml_emitter_t *emitter, yaml_node_t *node, yaml_char_t *anchor) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_SEQUENCE_TAG) == 0); yaml_node_item_t *item; SEQUENCE_START_EVENT_INIT(event, anchor, node->tag, implicit, node->data.sequence.style, mark, mark); if (!yaml_emitter_emit(emitter, &event)) return 0; for (item = node->data.sequence.items.start; item < node->data.sequence.items.top; item ++) { if (!yaml_emitter_dump_node(emitter, *item)) return 0; } SEQUENCE_END_EVENT_INIT(event, mark, mark); if (!yaml_emitter_emit(emitter, &event)) return 0; return 1; } /* * Serialize a mapping. */ static int yaml_emitter_dump_mapping(yaml_emitter_t *emitter, yaml_node_t *node, yaml_char_t *anchor) { yaml_event_t event; yaml_mark_t mark = { 0, 0, 0 }; int implicit = (strcmp((char *)node->tag, YAML_DEFAULT_MAPPING_TAG) == 0); yaml_node_pair_t *pair; MAPPING_START_EVENT_INIT(event, anchor, node->tag, implicit, node->data.mapping.style, mark, mark); if (!yaml_emitter_emit(emitter, &event)) return 0; for (pair = node->data.mapping.pairs.start; pair < node->data.mapping.pairs.top; pair ++) { if (!yaml_emitter_dump_node(emitter, pair->key)) return 0; if (!yaml_emitter_dump_node(emitter, pair->value)) return 0; } MAPPING_END_EVENT_INIT(event, mark, mark); if (!yaml_emitter_emit(emitter, &event)) return 0; return 1; } yaml-0.8.20/libyaml/emitter.c0000644000000000000000000020030113001717724014175 0ustar0000000000000000 #include "yaml_private.h" /* * Flush the buffer if needed. */ #define FLUSH(emitter) \ ((emitter->buffer.pointer+5 < emitter->buffer.end) \ || yaml_emitter_flush(emitter)) /* * Put a character to the output buffer. */ #define PUT(emitter,value) \ (FLUSH(emitter) \ && (*(emitter->buffer.pointer++) = (yaml_char_t)(value), \ emitter->column ++, \ 1)) /* * Put a line break to the output buffer. */ #define PUT_BREAK(emitter) \ (FLUSH(emitter) \ && ((emitter->line_break == YAML_CR_BREAK ? \ (*(emitter->buffer.pointer++) = (yaml_char_t) '\r') : \ emitter->line_break == YAML_LN_BREAK ? \ (*(emitter->buffer.pointer++) = (yaml_char_t) '\n') : \ emitter->line_break == YAML_CRLN_BREAK ? \ (*(emitter->buffer.pointer++) = (yaml_char_t) '\r', \ *(emitter->buffer.pointer++) = (yaml_char_t) '\n') : 0), \ emitter->column = 0, \ emitter->line ++, \ 1)) /* * Copy a character from a string into buffer. */ #define WRITE(emitter,string) \ (FLUSH(emitter) \ && (COPY(emitter->buffer,string), \ emitter->column ++, \ 1)) /* * Copy a line break character from a string into buffer. */ #define WRITE_BREAK(emitter,string) \ (FLUSH(emitter) \ && (CHECK(string,'\n') ? \ (PUT_BREAK(emitter), \ string.pointer ++, \ 1) : \ (COPY(emitter->buffer,string), \ emitter->column = 0, \ emitter->line ++, \ 1))) /* * API functions. */ YAML_DECLARE(int) yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event); /* * Utility functions. */ static int yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem); static int yaml_emitter_need_more_events(yaml_emitter_t *emitter); static int yaml_emitter_append_tag_directive(yaml_emitter_t *emitter, yaml_tag_directive_t value, int allow_duplicates); static int yaml_emitter_increase_indent(yaml_emitter_t *emitter, int flow, int indentless); /* * State functions. */ static int yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_stream_start(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_document_start(yaml_emitter_t *emitter, yaml_event_t *event, int first); static int yaml_emitter_emit_document_content(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_document_end(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter, yaml_event_t *event, int first); static int yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter, yaml_event_t *event, int first); static int yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter, yaml_event_t *event, int simple); static int yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter, yaml_event_t *event, int first); static int yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter, yaml_event_t *event, int first); static int yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter, yaml_event_t *event, int simple); static int yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event, int root, int sequence, int mapping, int simple_key); static int yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event); static int yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event); /* * Checkers. */ static int yaml_emitter_check_empty_document(yaml_emitter_t *emitter); static int yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter); static int yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter); static int yaml_emitter_check_simple_key(yaml_emitter_t *emitter); static int yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event); /* * Processors. */ static int yaml_emitter_process_anchor(yaml_emitter_t *emitter); static int yaml_emitter_process_tag(yaml_emitter_t *emitter); static int yaml_emitter_process_scalar(yaml_emitter_t *emitter); /* * Analyzers. */ static int yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter, yaml_version_directive_t version_directive); static int yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter, yaml_tag_directive_t tag_directive); static int yaml_emitter_analyze_anchor(yaml_emitter_t *emitter, yaml_char_t *anchor, int alias); static int yaml_emitter_analyze_tag(yaml_emitter_t *emitter, yaml_char_t *tag); static int yaml_emitter_analyze_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length); static int yaml_emitter_analyze_event(yaml_emitter_t *emitter, yaml_event_t *event); /* * Writers. */ static int yaml_emitter_write_bom(yaml_emitter_t *emitter); static int yaml_emitter_write_indent(yaml_emitter_t *emitter); static int yaml_emitter_write_indicator(yaml_emitter_t *emitter, char *indicator, int need_whitespace, int is_whitespace, int is_indention); static int yaml_emitter_write_anchor(yaml_emitter_t *emitter, yaml_char_t *value, size_t length); static int yaml_emitter_write_tag_handle(yaml_emitter_t *emitter, yaml_char_t *value, size_t length); static int yaml_emitter_write_tag_content(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int need_whitespace); static int yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int allow_breaks); static int yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int allow_breaks); static int yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int allow_breaks); static int yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter, yaml_string_t string); static int yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length); static int yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length); /* * Set an emitter error and return 0. */ static int yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem) { emitter->error = YAML_EMITTER_ERROR; emitter->problem = problem; return 0; } /* * Emit an event. */ YAML_DECLARE(int) yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event) { if (!ENQUEUE(emitter, emitter->events, *event)) { yaml_event_delete(event); return 0; } while (!yaml_emitter_need_more_events(emitter)) { if (!yaml_emitter_analyze_event(emitter, emitter->events.head)) return 0; if (!yaml_emitter_state_machine(emitter, emitter->events.head)) return 0; yaml_event_delete(&DEQUEUE(emitter, emitter->events)); } return 1; } /* * Check if we need to accumulate more events before emitting. * * We accumulate extra * - 1 event for DOCUMENT-START * - 2 events for SEQUENCE-START * - 3 events for MAPPING-START */ static int yaml_emitter_need_more_events(yaml_emitter_t *emitter) { int level = 0; int accumulate = 0; yaml_event_t *event; if (QUEUE_EMPTY(emitter, emitter->events)) return 1; switch (emitter->events.head->type) { case YAML_DOCUMENT_START_EVENT: accumulate = 1; break; case YAML_SEQUENCE_START_EVENT: accumulate = 2; break; case YAML_MAPPING_START_EVENT: accumulate = 3; break; default: return 0; } if (emitter->events.tail - emitter->events.head > accumulate) return 0; for (event = emitter->events.head; event != emitter->events.tail; event ++) { switch (event->type) { case YAML_STREAM_START_EVENT: case YAML_DOCUMENT_START_EVENT: case YAML_SEQUENCE_START_EVENT: case YAML_MAPPING_START_EVENT: level += 1; break; case YAML_STREAM_END_EVENT: case YAML_DOCUMENT_END_EVENT: case YAML_SEQUENCE_END_EVENT: case YAML_MAPPING_END_EVENT: level -= 1; break; default: break; } if (!level) return 0; } return 1; } /* * Append a directive to the directives stack. */ static int yaml_emitter_append_tag_directive(yaml_emitter_t *emitter, yaml_tag_directive_t value, int allow_duplicates) { yaml_tag_directive_t *tag_directive; yaml_tag_directive_t copy = { NULL, NULL }; for (tag_directive = emitter->tag_directives.start; tag_directive != emitter->tag_directives.top; tag_directive ++) { if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) { if (allow_duplicates) return 1; return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive"); } } copy.handle = yaml_strdup(value.handle); copy.prefix = yaml_strdup(value.prefix); if (!copy.handle || !copy.prefix) { emitter->error = YAML_MEMORY_ERROR; goto error; } if (!PUSH(emitter, emitter->tag_directives, copy)) goto error; return 1; error: yaml_free(copy.handle); yaml_free(copy.prefix); return 0; } /* * Increase the indentation level. */ static int yaml_emitter_increase_indent(yaml_emitter_t *emitter, int flow, int indentless) { if (!PUSH(emitter, emitter->indents, emitter->indent)) return 0; if (emitter->indent < 0) { emitter->indent = flow ? emitter->best_indent : 0; } else if (!indentless) { emitter->indent += emitter->best_indent; } return 1; } /* * State dispatcher. */ static int yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event) { switch (emitter->state) { case YAML_EMIT_STREAM_START_STATE: return yaml_emitter_emit_stream_start(emitter, event); case YAML_EMIT_FIRST_DOCUMENT_START_STATE: return yaml_emitter_emit_document_start(emitter, event, 1); case YAML_EMIT_DOCUMENT_START_STATE: return yaml_emitter_emit_document_start(emitter, event, 0); case YAML_EMIT_DOCUMENT_CONTENT_STATE: return yaml_emitter_emit_document_content(emitter, event); case YAML_EMIT_DOCUMENT_END_STATE: return yaml_emitter_emit_document_end(emitter, event); case YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE: return yaml_emitter_emit_flow_sequence_item(emitter, event, 1); case YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE: return yaml_emitter_emit_flow_sequence_item(emitter, event, 0); case YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE: return yaml_emitter_emit_flow_mapping_key(emitter, event, 1); case YAML_EMIT_FLOW_MAPPING_KEY_STATE: return yaml_emitter_emit_flow_mapping_key(emitter, event, 0); case YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE: return yaml_emitter_emit_flow_mapping_value(emitter, event, 1); case YAML_EMIT_FLOW_MAPPING_VALUE_STATE: return yaml_emitter_emit_flow_mapping_value(emitter, event, 0); case YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE: return yaml_emitter_emit_block_sequence_item(emitter, event, 1); case YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE: return yaml_emitter_emit_block_sequence_item(emitter, event, 0); case YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE: return yaml_emitter_emit_block_mapping_key(emitter, event, 1); case YAML_EMIT_BLOCK_MAPPING_KEY_STATE: return yaml_emitter_emit_block_mapping_key(emitter, event, 0); case YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE: return yaml_emitter_emit_block_mapping_value(emitter, event, 1); case YAML_EMIT_BLOCK_MAPPING_VALUE_STATE: return yaml_emitter_emit_block_mapping_value(emitter, event, 0); case YAML_EMIT_END_STATE: return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END"); default: assert(1); /* Invalid state. */ } return 0; } /* * Expect STREAM-START. */ static int yaml_emitter_emit_stream_start(yaml_emitter_t *emitter, yaml_event_t *event) { if (event->type == YAML_STREAM_START_EVENT) { if (!emitter->encoding) { emitter->encoding = event->data.stream_start.encoding; } if (!emitter->encoding) { emitter->encoding = YAML_UTF8_ENCODING; } if (emitter->best_indent < 2 || emitter->best_indent > 9) { emitter->best_indent = 2; } if (emitter->best_width >= 0 && emitter->best_width <= emitter->best_indent*2) { emitter->best_width = 80; } if (emitter->best_width < 0) { emitter->best_width = INT_MAX; } if (!emitter->line_break) { emitter->line_break = YAML_LN_BREAK; } emitter->indent = -1; emitter->line = 0; emitter->column = 0; emitter->whitespace = 1; emitter->indention = 1; if (emitter->encoding != YAML_UTF8_ENCODING) { if (!yaml_emitter_write_bom(emitter)) return 0; } emitter->state = YAML_EMIT_FIRST_DOCUMENT_START_STATE; return 1; } return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START"); } /* * Expect DOCUMENT-START or STREAM-END. */ static int yaml_emitter_emit_document_start(yaml_emitter_t *emitter, yaml_event_t *event, int first) { if (event->type == YAML_DOCUMENT_START_EVENT) { yaml_tag_directive_t default_tag_directives[] = { {(yaml_char_t *)"!", (yaml_char_t *)"!"}, {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"}, {NULL, NULL} }; yaml_tag_directive_t *tag_directive; int implicit; if (event->data.document_start.version_directive) { if (!yaml_emitter_analyze_version_directive(emitter, *event->data.document_start.version_directive)) return 0; } for (tag_directive = event->data.document_start.tag_directives.start; tag_directive != event->data.document_start.tag_directives.end; tag_directive ++) { if (!yaml_emitter_analyze_tag_directive(emitter, *tag_directive)) return 0; if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0)) return 0; } for (tag_directive = default_tag_directives; tag_directive->handle; tag_directive ++) { if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1)) return 0; } implicit = event->data.document_start.implicit; if (!first || emitter->canonical) { implicit = 0; } if ((event->data.document_start.version_directive || (event->data.document_start.tag_directives.start != event->data.document_start.tag_directives.end)) && emitter->open_ended) { if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } if (event->data.document_start.version_directive) { implicit = 0; if (!yaml_emitter_write_indicator(emitter, "%YAML", 1, 0, 0)) return 0; if (!yaml_emitter_write_indicator(emitter, "1.1", 1, 0, 0)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } if (event->data.document_start.tag_directives.start != event->data.document_start.tag_directives.end) { implicit = 0; for (tag_directive = event->data.document_start.tag_directives.start; tag_directive != event->data.document_start.tag_directives.end; tag_directive ++) { if (!yaml_emitter_write_indicator(emitter, "%TAG", 1, 0, 0)) return 0; if (!yaml_emitter_write_tag_handle(emitter, tag_directive->handle, strlen((char *)tag_directive->handle))) return 0; if (!yaml_emitter_write_tag_content(emitter, tag_directive->prefix, strlen((char *)tag_directive->prefix), 1)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } } if (yaml_emitter_check_empty_document(emitter)) { implicit = 0; } if (!implicit) { if (!yaml_emitter_write_indent(emitter)) return 0; if (!yaml_emitter_write_indicator(emitter, "---", 1, 0, 0)) return 0; if (emitter->canonical) { if (!yaml_emitter_write_indent(emitter)) return 0; } } emitter->state = YAML_EMIT_DOCUMENT_CONTENT_STATE; return 1; } else if (event->type == YAML_STREAM_END_EVENT) { if (emitter->open_ended) { if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } if (!yaml_emitter_flush(emitter)) return 0; emitter->state = YAML_EMIT_END_STATE; return 1; } return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END"); } /* * Expect the root node. */ static int yaml_emitter_emit_document_content(yaml_emitter_t *emitter, yaml_event_t *event) { if (!PUSH(emitter, emitter->states, YAML_EMIT_DOCUMENT_END_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 1, 0, 0, 0); } /* * Expect DOCUMENT-END. */ static int yaml_emitter_emit_document_end(yaml_emitter_t *emitter, yaml_event_t *event) { if (event->type == YAML_DOCUMENT_END_EVENT) { if (!yaml_emitter_write_indent(emitter)) return 0; if (!event->data.document_end.implicit) { if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } if (!yaml_emitter_flush(emitter)) return 0; emitter->state = YAML_EMIT_DOCUMENT_START_STATE; while (!STACK_EMPTY(emitter, emitter->tag_directives)) { yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives); yaml_free(tag_directive.handle); yaml_free(tag_directive.prefix); } return 1; } return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END"); } /* * * Expect a flow item node. */ static int yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter, yaml_event_t *event, int first) { if (first) { if (!yaml_emitter_write_indicator(emitter, "[", 1, 1, 0)) return 0; if (!yaml_emitter_increase_indent(emitter, 1, 0)) return 0; emitter->flow_level ++; } if (event->type == YAML_SEQUENCE_END_EVENT) { emitter->flow_level --; emitter->indent = POP(emitter, emitter->indents); if (emitter->canonical && !first) { if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } if (!yaml_emitter_write_indicator(emitter, "]", 0, 0, 0)) return 0; emitter->state = POP(emitter, emitter->states); return 1; } if (!first) { if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0)) return 0; } if (emitter->canonical || emitter->column > emitter->best_width) { if (!yaml_emitter_write_indent(emitter)) return 0; } if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0); } /* * Expect a flow key node. */ static int yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter, yaml_event_t *event, int first) { if (first) { if (!yaml_emitter_write_indicator(emitter, "{", 1, 1, 0)) return 0; if (!yaml_emitter_increase_indent(emitter, 1, 0)) return 0; emitter->flow_level ++; } if (event->type == YAML_MAPPING_END_EVENT) { emitter->flow_level --; emitter->indent = POP(emitter, emitter->indents); if (emitter->canonical && !first) { if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0)) return 0; if (!yaml_emitter_write_indent(emitter)) return 0; } if (!yaml_emitter_write_indicator(emitter, "}", 0, 0, 0)) return 0; emitter->state = POP(emitter, emitter->states); return 1; } if (!first) { if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0)) return 0; } if (emitter->canonical || emitter->column > emitter->best_width) { if (!yaml_emitter_write_indent(emitter)) return 0; } if (!emitter->canonical && yaml_emitter_check_simple_key(emitter)) { if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1); } else { if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 0)) return 0; if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_VALUE_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0); } } /* * Expect a flow value node. */ static int yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter, yaml_event_t *event, int simple) { if (simple) { if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0)) return 0; } else { if (emitter->canonical || emitter->column > emitter->best_width) { if (!yaml_emitter_write_indent(emitter)) return 0; } if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 0)) return 0; } if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_KEY_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0); } /* * Expect a block item node. */ static int yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter, yaml_event_t *event, int first) { if (first) { if (!yaml_emitter_increase_indent(emitter, 0, (emitter->mapping_context && !emitter->indention))) return 0; } if (event->type == YAML_SEQUENCE_END_EVENT) { emitter->indent = POP(emitter, emitter->indents); emitter->state = POP(emitter, emitter->states); return 1; } if (!yaml_emitter_write_indent(emitter)) return 0; if (!yaml_emitter_write_indicator(emitter, "-", 1, 0, 1)) return 0; if (!PUSH(emitter, emitter->states, YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0); } /* * Expect a block key node. */ static int yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter, yaml_event_t *event, int first) { if (first) { if (!yaml_emitter_increase_indent(emitter, 0, 0)) return 0; } if (event->type == YAML_MAPPING_END_EVENT) { emitter->indent = POP(emitter, emitter->indents); emitter->state = POP(emitter, emitter->states); return 1; } if (!yaml_emitter_write_indent(emitter)) return 0; if (yaml_emitter_check_simple_key(emitter)) { if (!PUSH(emitter, emitter->states, YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1); } else { if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 1)) return 0; if (!PUSH(emitter, emitter->states, YAML_EMIT_BLOCK_MAPPING_VALUE_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0); } } /* * Expect a block value node. */ static int yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter, yaml_event_t *event, int simple) { if (simple) { if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0)) return 0; } else { if (!yaml_emitter_write_indent(emitter)) return 0; if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 1)) return 0; } if (!PUSH(emitter, emitter->states, YAML_EMIT_BLOCK_MAPPING_KEY_STATE)) return 0; return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0); } /* * Expect a node. */ static int yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event, int root, int sequence, int mapping, int simple_key) { emitter->root_context = root; emitter->sequence_context = sequence; emitter->mapping_context = mapping; emitter->simple_key_context = simple_key; switch (event->type) { case YAML_ALIAS_EVENT: return yaml_emitter_emit_alias(emitter, event); case YAML_SCALAR_EVENT: return yaml_emitter_emit_scalar(emitter, event); case YAML_SEQUENCE_START_EVENT: return yaml_emitter_emit_sequence_start(emitter, event); case YAML_MAPPING_START_EVENT: return yaml_emitter_emit_mapping_start(emitter, event); default: return yaml_emitter_set_emitter_error(emitter, "expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS"); } return 0; } /* * Expect ALIAS. */ static int yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event) { if (!yaml_emitter_process_anchor(emitter)) return 0; emitter->state = POP(emitter, emitter->states); return 1; } /* * Expect SCALAR. */ static int yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event) { if (!yaml_emitter_select_scalar_style(emitter, event)) return 0; if (!yaml_emitter_process_anchor(emitter)) return 0; if (!yaml_emitter_process_tag(emitter)) return 0; if (!yaml_emitter_increase_indent(emitter, 1, 0)) return 0; if (!yaml_emitter_process_scalar(emitter)) return 0; emitter->indent = POP(emitter, emitter->indents); emitter->state = POP(emitter, emitter->states); return 1; } /* * Expect SEQUENCE-START. */ static int yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event) { if (!yaml_emitter_process_anchor(emitter)) return 0; if (!yaml_emitter_process_tag(emitter)) return 0; if (emitter->flow_level || emitter->canonical || event->data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE || yaml_emitter_check_empty_sequence(emitter)) { emitter->state = YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE; } else { emitter->state = YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE; } return 1; } /* * Expect MAPPING-START. */ static int yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event) { if (!yaml_emitter_process_anchor(emitter)) return 0; if (!yaml_emitter_process_tag(emitter)) return 0; if (emitter->flow_level || emitter->canonical || event->data.mapping_start.style == YAML_FLOW_MAPPING_STYLE || yaml_emitter_check_empty_mapping(emitter)) { emitter->state = YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE; } else { emitter->state = YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE; } return 1; } /* * Check if the document content is an empty scalar. */ static int yaml_emitter_check_empty_document(yaml_emitter_t *emitter) { return 0; } /* * Check if the next events represent an empty sequence. */ static int yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter) { if (emitter->events.tail - emitter->events.head < 2) return 0; return (emitter->events.head[0].type == YAML_SEQUENCE_START_EVENT && emitter->events.head[1].type == YAML_SEQUENCE_END_EVENT); } /* * Check if the next events represent an empty mapping. */ static int yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter) { if (emitter->events.tail - emitter->events.head < 2) return 0; return (emitter->events.head[0].type == YAML_MAPPING_START_EVENT && emitter->events.head[1].type == YAML_MAPPING_END_EVENT); } /* * Check if the next node can be expressed as a simple key. */ static int yaml_emitter_check_simple_key(yaml_emitter_t *emitter) { yaml_event_t *event = emitter->events.head; size_t length = 0; switch (event->type) { case YAML_ALIAS_EVENT: length += emitter->anchor_data.anchor_length; break; case YAML_SCALAR_EVENT: if (emitter->scalar_data.multiline) return 0; length += emitter->anchor_data.anchor_length + emitter->tag_data.handle_length + emitter->tag_data.suffix_length + emitter->scalar_data.length; break; case YAML_SEQUENCE_START_EVENT: if (!yaml_emitter_check_empty_sequence(emitter)) return 0; length += emitter->anchor_data.anchor_length + emitter->tag_data.handle_length + emitter->tag_data.suffix_length; break; case YAML_MAPPING_START_EVENT: if (!yaml_emitter_check_empty_mapping(emitter)) return 0; length += emitter->anchor_data.anchor_length + emitter->tag_data.handle_length + emitter->tag_data.suffix_length; break; default: return 0; } if (length > 128) return 0; return 1; } /* * Determine an acceptable scalar style. */ static int yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event) { yaml_scalar_style_t style = event->data.scalar.style; int no_tag = (!emitter->tag_data.handle && !emitter->tag_data.suffix); if (no_tag && !event->data.scalar.plain_implicit && !event->data.scalar.quoted_implicit) { return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified"); } if (style == YAML_ANY_SCALAR_STYLE) style = YAML_PLAIN_SCALAR_STYLE; if (emitter->canonical) style = YAML_DOUBLE_QUOTED_SCALAR_STYLE; if (emitter->simple_key_context && emitter->scalar_data.multiline) style = YAML_DOUBLE_QUOTED_SCALAR_STYLE; if (style == YAML_PLAIN_SCALAR_STYLE) { if ((emitter->flow_level && !emitter->scalar_data.flow_plain_allowed) || (!emitter->flow_level && !emitter->scalar_data.block_plain_allowed)) style = YAML_SINGLE_QUOTED_SCALAR_STYLE; if (!emitter->scalar_data.length && (emitter->flow_level || emitter->simple_key_context)) style = YAML_SINGLE_QUOTED_SCALAR_STYLE; if (no_tag && !event->data.scalar.plain_implicit) style = YAML_SINGLE_QUOTED_SCALAR_STYLE; } if (style == YAML_SINGLE_QUOTED_SCALAR_STYLE) { if (!emitter->scalar_data.single_quoted_allowed) style = YAML_DOUBLE_QUOTED_SCALAR_STYLE; } if (style == YAML_LITERAL_SCALAR_STYLE || style == YAML_FOLDED_SCALAR_STYLE) { if (!emitter->scalar_data.block_allowed || emitter->flow_level || emitter->simple_key_context) style = YAML_DOUBLE_QUOTED_SCALAR_STYLE; } if (no_tag && !event->data.scalar.quoted_implicit && style != YAML_PLAIN_SCALAR_STYLE) { emitter->tag_data.handle = (yaml_char_t *)"!"; emitter->tag_data.handle_length = 1; } emitter->scalar_data.style = style; return 1; } /* * Write an achor. */ static int yaml_emitter_process_anchor(yaml_emitter_t *emitter) { if (!emitter->anchor_data.anchor) return 1; if (!yaml_emitter_write_indicator(emitter, (emitter->anchor_data.alias ? "*" : "&"), 1, 0, 0)) return 0; return yaml_emitter_write_anchor(emitter, emitter->anchor_data.anchor, emitter->anchor_data.anchor_length); } /* * Write a tag. */ static int yaml_emitter_process_tag(yaml_emitter_t *emitter) { if (!emitter->tag_data.handle && !emitter->tag_data.suffix) return 1; if (emitter->tag_data.handle) { if (!yaml_emitter_write_tag_handle(emitter, emitter->tag_data.handle, emitter->tag_data.handle_length)) return 0; if (emitter->tag_data.suffix) { if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix, emitter->tag_data.suffix_length, 0)) return 0; } } else { if (!yaml_emitter_write_indicator(emitter, "!<", 1, 0, 0)) return 0; if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix, emitter->tag_data.suffix_length, 0)) return 0; if (!yaml_emitter_write_indicator(emitter, ">", 0, 0, 0)) return 0; } return 1; } /* * Write a scalar. */ static int yaml_emitter_process_scalar(yaml_emitter_t *emitter) { switch (emitter->scalar_data.style) { case YAML_PLAIN_SCALAR_STYLE: return yaml_emitter_write_plain_scalar(emitter, emitter->scalar_data.value, emitter->scalar_data.length, !emitter->simple_key_context); case YAML_SINGLE_QUOTED_SCALAR_STYLE: return yaml_emitter_write_single_quoted_scalar(emitter, emitter->scalar_data.value, emitter->scalar_data.length, !emitter->simple_key_context); case YAML_DOUBLE_QUOTED_SCALAR_STYLE: return yaml_emitter_write_double_quoted_scalar(emitter, emitter->scalar_data.value, emitter->scalar_data.length, !emitter->simple_key_context); case YAML_LITERAL_SCALAR_STYLE: return yaml_emitter_write_literal_scalar(emitter, emitter->scalar_data.value, emitter->scalar_data.length); case YAML_FOLDED_SCALAR_STYLE: return yaml_emitter_write_folded_scalar(emitter, emitter->scalar_data.value, emitter->scalar_data.length); default: assert(1); /* Impossible. */ } return 0; } /* * Check if a %YAML directive is valid. */ static int yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter, yaml_version_directive_t version_directive) { if (version_directive.major != 1 || version_directive.minor != 1) { return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive"); } return 1; } /* * Check if a %TAG directive is valid. */ static int yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter, yaml_tag_directive_t tag_directive) { yaml_string_t handle; yaml_string_t prefix; size_t handle_length; size_t prefix_length; handle_length = strlen((char *)tag_directive.handle); prefix_length = strlen((char *)tag_directive.prefix); STRING_ASSIGN(handle, tag_directive.handle, handle_length); STRING_ASSIGN(prefix, tag_directive.prefix, prefix_length); if (handle.start == handle.end) { return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty"); } if (handle.start[0] != '!') { return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'"); } if (handle.end[-1] != '!') { return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'"); } handle.pointer ++; while (handle.pointer < handle.end-1) { if (!IS_ALPHA(handle)) { return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only"); } MOVE(handle); } if (prefix.start == prefix.end) { return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty"); } return 1; } /* * Check if an anchor is valid. */ static int yaml_emitter_analyze_anchor(yaml_emitter_t *emitter, yaml_char_t *anchor, int alias) { size_t anchor_length; yaml_string_t string; anchor_length = strlen((char *)anchor); STRING_ASSIGN(string, anchor, anchor_length); if (string.start == string.end) { return yaml_emitter_set_emitter_error(emitter, alias ? "alias value must not be empty" : "anchor value must not be empty"); } while (string.pointer != string.end) { if (!IS_ALPHA(string)) { return yaml_emitter_set_emitter_error(emitter, alias ? "alias value must contain alphanumerical characters only" : "anchor value must contain alphanumerical characters only"); } MOVE(string); } emitter->anchor_data.anchor = string.start; emitter->anchor_data.anchor_length = string.end - string.start; emitter->anchor_data.alias = alias; return 1; } /* * Check if a tag is valid. */ static int yaml_emitter_analyze_tag(yaml_emitter_t *emitter, yaml_char_t *tag) { size_t tag_length; yaml_string_t string; yaml_tag_directive_t *tag_directive; tag_length = strlen((char *)tag); STRING_ASSIGN(string, tag, tag_length); if (string.start == string.end) { return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty"); } for (tag_directive = emitter->tag_directives.start; tag_directive != emitter->tag_directives.top; tag_directive ++) { size_t prefix_length = strlen((char *)tag_directive->prefix); if (prefix_length < (size_t)(string.end - string.start) && strncmp((char *)tag_directive->prefix, (char *)string.start, prefix_length) == 0) { emitter->tag_data.handle = tag_directive->handle; emitter->tag_data.handle_length = strlen((char *)tag_directive->handle); emitter->tag_data.suffix = string.start + prefix_length; emitter->tag_data.suffix_length = (string.end - string.start) - prefix_length; return 1; } } emitter->tag_data.suffix = string.start; emitter->tag_data.suffix_length = string.end - string.start; return 1; } /* * Check if a scalar is valid. */ static int yaml_emitter_analyze_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length) { yaml_string_t string; int block_indicators = 0; int flow_indicators = 0; int line_breaks = 0; int special_characters = 0; int leading_space = 0; int leading_break = 0; int trailing_space = 0; int trailing_break = 0; int break_space = 0; int space_break = 0; int preceeded_by_whitespace = 0; int followed_by_whitespace = 0; int previous_space = 0; int previous_break = 0; STRING_ASSIGN(string, value, length); emitter->scalar_data.value = value; emitter->scalar_data.length = length; if (string.start == string.end) { emitter->scalar_data.multiline = 0; emitter->scalar_data.flow_plain_allowed = 0; emitter->scalar_data.block_plain_allowed = 1; emitter->scalar_data.single_quoted_allowed = 1; emitter->scalar_data.block_allowed = 0; return 1; } if ((CHECK_AT(string, '-', 0) && CHECK_AT(string, '-', 1) && CHECK_AT(string, '-', 2)) || (CHECK_AT(string, '.', 0) && CHECK_AT(string, '.', 1) && CHECK_AT(string, '.', 2))) { block_indicators = 1; flow_indicators = 1; } preceeded_by_whitespace = 1; followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string)); while (string.pointer != string.end) { if (string.start == string.pointer) { if (CHECK(string, '#') || CHECK(string, ',') || CHECK(string, '[') || CHECK(string, ']') || CHECK(string, '{') || CHECK(string, '}') || CHECK(string, '&') || CHECK(string, '*') || CHECK(string, '!') || CHECK(string, '|') || CHECK(string, '>') || CHECK(string, '\'') || CHECK(string, '"') || CHECK(string, '%') || CHECK(string, '@') || CHECK(string, '`')) { flow_indicators = 1; block_indicators = 1; } if (CHECK(string, '?') || CHECK(string, ':')) { flow_indicators = 1; if (followed_by_whitespace) { block_indicators = 1; } } if (CHECK(string, '-') && followed_by_whitespace) { flow_indicators = 1; block_indicators = 1; } } else { if (CHECK(string, ',') || CHECK(string, '?') || CHECK(string, '[') || CHECK(string, ']') || CHECK(string, '{') || CHECK(string, '}')) { flow_indicators = 1; } if (CHECK(string, ':')) { flow_indicators = 1; if (followed_by_whitespace) { block_indicators = 1; } } if (CHECK(string, '#') && preceeded_by_whitespace) { flow_indicators = 1; block_indicators = 1; } } if (!IS_PRINTABLE(string) || (!IS_ASCII(string) && !emitter->unicode)) { special_characters = 1; } if (IS_BREAK(string)) { line_breaks = 1; } if (IS_SPACE(string)) { if (string.start == string.pointer) { leading_space = 1; } if (string.pointer+WIDTH(string) == string.end) { trailing_space = 1; } if (previous_break) { break_space = 1; } previous_space = 1; previous_break = 0; } else if (IS_BREAK(string)) { if (string.start == string.pointer) { leading_break = 1; } if (string.pointer+WIDTH(string) == string.end) { trailing_break = 1; } if (previous_space) { space_break = 1; } previous_space = 0; previous_break = 1; } else { previous_space = 0; previous_break = 0; } preceeded_by_whitespace = IS_BLANKZ(string); MOVE(string); if (string.pointer != string.end) { followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string)); } } emitter->scalar_data.multiline = line_breaks; emitter->scalar_data.flow_plain_allowed = 1; emitter->scalar_data.block_plain_allowed = 1; emitter->scalar_data.single_quoted_allowed = 1; emitter->scalar_data.block_allowed = 1; if (leading_space || leading_break || trailing_space || trailing_break) { emitter->scalar_data.flow_plain_allowed = 0; emitter->scalar_data.block_plain_allowed = 0; } if (trailing_space) { emitter->scalar_data.block_allowed = 0; } if (break_space) { emitter->scalar_data.flow_plain_allowed = 0; emitter->scalar_data.block_plain_allowed = 0; emitter->scalar_data.single_quoted_allowed = 0; } if (space_break || special_characters) { emitter->scalar_data.flow_plain_allowed = 0; emitter->scalar_data.block_plain_allowed = 0; emitter->scalar_data.single_quoted_allowed = 0; emitter->scalar_data.block_allowed = 0; } if (line_breaks) { emitter->scalar_data.flow_plain_allowed = 0; emitter->scalar_data.block_plain_allowed = 0; } if (flow_indicators) { emitter->scalar_data.flow_plain_allowed = 0; } if (block_indicators) { emitter->scalar_data.block_plain_allowed = 0; } return 1; } /* * Check if the event data is valid. */ static int yaml_emitter_analyze_event(yaml_emitter_t *emitter, yaml_event_t *event) { emitter->anchor_data.anchor = NULL; emitter->anchor_data.anchor_length = 0; emitter->tag_data.handle = NULL; emitter->tag_data.handle_length = 0; emitter->tag_data.suffix = NULL; emitter->tag_data.suffix_length = 0; emitter->scalar_data.value = NULL; emitter->scalar_data.length = 0; switch (event->type) { case YAML_ALIAS_EVENT: if (!yaml_emitter_analyze_anchor(emitter, event->data.alias.anchor, 1)) return 0; return 1; case YAML_SCALAR_EVENT: if (event->data.scalar.anchor) { if (!yaml_emitter_analyze_anchor(emitter, event->data.scalar.anchor, 0)) return 0; } if (event->data.scalar.tag && (emitter->canonical || (!event->data.scalar.plain_implicit && !event->data.scalar.quoted_implicit))) { if (!yaml_emitter_analyze_tag(emitter, event->data.scalar.tag)) return 0; } if (!yaml_emitter_analyze_scalar(emitter, event->data.scalar.value, event->data.scalar.length)) return 0; return 1; case YAML_SEQUENCE_START_EVENT: if (event->data.sequence_start.anchor) { if (!yaml_emitter_analyze_anchor(emitter, event->data.sequence_start.anchor, 0)) return 0; } if (event->data.sequence_start.tag && (emitter->canonical || !event->data.sequence_start.implicit)) { if (!yaml_emitter_analyze_tag(emitter, event->data.sequence_start.tag)) return 0; } return 1; case YAML_MAPPING_START_EVENT: if (event->data.mapping_start.anchor) { if (!yaml_emitter_analyze_anchor(emitter, event->data.mapping_start.anchor, 0)) return 0; } if (event->data.mapping_start.tag && (emitter->canonical || !event->data.mapping_start.implicit)) { if (!yaml_emitter_analyze_tag(emitter, event->data.mapping_start.tag)) return 0; } return 1; default: return 1; } } /* * Write the BOM character. */ static int yaml_emitter_write_bom(yaml_emitter_t *emitter) { if (!FLUSH(emitter)) return 0; *(emitter->buffer.pointer++) = (yaml_char_t) '\xEF'; *(emitter->buffer.pointer++) = (yaml_char_t) '\xBB'; *(emitter->buffer.pointer++) = (yaml_char_t) '\xBF'; return 1; } static int yaml_emitter_write_indent(yaml_emitter_t *emitter) { int indent = (emitter->indent >= 0) ? emitter->indent : 0; if (!emitter->indention || emitter->column > indent || (emitter->column == indent && !emitter->whitespace)) { if (!PUT_BREAK(emitter)) return 0; } while (emitter->column < indent) { if (!PUT(emitter, ' ')) return 0; } emitter->whitespace = 1; emitter->indention = 1; return 1; } static int yaml_emitter_write_indicator(yaml_emitter_t *emitter, char *indicator, int need_whitespace, int is_whitespace, int is_indention) { size_t indicator_length; yaml_string_t string; indicator_length = strlen(indicator); STRING_ASSIGN(string, (yaml_char_t *)indicator, indicator_length); if (need_whitespace && !emitter->whitespace) { if (!PUT(emitter, ' ')) return 0; } while (string.pointer != string.end) { if (!WRITE(emitter, string)) return 0; } emitter->whitespace = is_whitespace; emitter->indention = (emitter->indention && is_indention); emitter->open_ended = 0; return 1; } static int yaml_emitter_write_anchor(yaml_emitter_t *emitter, yaml_char_t *value, size_t length) { yaml_string_t string; STRING_ASSIGN(string, value, length); while (string.pointer != string.end) { if (!WRITE(emitter, string)) return 0; } emitter->whitespace = 0; emitter->indention = 0; return 1; } static int yaml_emitter_write_tag_handle(yaml_emitter_t *emitter, yaml_char_t *value, size_t length) { yaml_string_t string; STRING_ASSIGN(string, value, length); if (!emitter->whitespace) { if (!PUT(emitter, ' ')) return 0; } while (string.pointer != string.end) { if (!WRITE(emitter, string)) return 0; } emitter->whitespace = 0; emitter->indention = 0; return 1; } static int yaml_emitter_write_tag_content(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int need_whitespace) { yaml_string_t string; STRING_ASSIGN(string, value, length); if (need_whitespace && !emitter->whitespace) { if (!PUT(emitter, ' ')) return 0; } while (string.pointer != string.end) { if (IS_ALPHA(string) || CHECK(string, ';') || CHECK(string, '/') || CHECK(string, '?') || CHECK(string, ':') || CHECK(string, '@') || CHECK(string, '&') || CHECK(string, '=') || CHECK(string, '+') || CHECK(string, '$') || CHECK(string, ',') || CHECK(string, '_') || CHECK(string, '.') || CHECK(string, '~') || CHECK(string, '*') || CHECK(string, '\'') || CHECK(string, '(') || CHECK(string, ')') || CHECK(string, '[') || CHECK(string, ']')) { if (!WRITE(emitter, string)) return 0; } else { int width = WIDTH(string); unsigned int value; while (width --) { value = *(string.pointer++); if (!PUT(emitter, '%')) return 0; if (!PUT(emitter, (value >> 4) + ((value >> 4) < 10 ? '0' : 'A' - 10))) return 0; if (!PUT(emitter, (value & 0x0F) + ((value & 0x0F) < 10 ? '0' : 'A' - 10))) return 0; } } } emitter->whitespace = 0; emitter->indention = 0; return 1; } static int yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int allow_breaks) { yaml_string_t string; int spaces = 0; int breaks = 0; STRING_ASSIGN(string, value, length); if (!emitter->whitespace) { if (!PUT(emitter, ' ')) return 0; } while (string.pointer != string.end) { if (IS_SPACE(string)) { if (allow_breaks && !spaces && emitter->column > emitter->best_width && !IS_SPACE_AT(string, 1)) { if (!yaml_emitter_write_indent(emitter)) return 0; MOVE(string); } else { if (!WRITE(emitter, string)) return 0; } spaces = 1; } else if (IS_BREAK(string)) { if (!breaks && CHECK(string, '\n')) { if (!PUT_BREAK(emitter)) return 0; } if (!WRITE_BREAK(emitter, string)) return 0; emitter->indention = 1; breaks = 1; } else { if (breaks) { if (!yaml_emitter_write_indent(emitter)) return 0; } if (!WRITE(emitter, string)) return 0; emitter->indention = 0; spaces = 0; breaks = 0; } } emitter->whitespace = 0; emitter->indention = 0; if (emitter->root_context) { emitter->open_ended = 1; } return 1; } static int yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int allow_breaks) { yaml_string_t string; int spaces = 0; int breaks = 0; STRING_ASSIGN(string, value, length); if (!yaml_emitter_write_indicator(emitter, "'", 1, 0, 0)) return 0; while (string.pointer != string.end) { if (IS_SPACE(string)) { if (allow_breaks && !spaces && emitter->column > emitter->best_width && string.pointer != string.start && string.pointer != string.end - 1 && !IS_SPACE_AT(string, 1)) { if (!yaml_emitter_write_indent(emitter)) return 0; MOVE(string); } else { if (!WRITE(emitter, string)) return 0; } spaces = 1; } else if (IS_BREAK(string)) { if (!breaks && CHECK(string, '\n')) { if (!PUT_BREAK(emitter)) return 0; } if (!WRITE_BREAK(emitter, string)) return 0; emitter->indention = 1; breaks = 1; } else { if (breaks) { if (!yaml_emitter_write_indent(emitter)) return 0; } if (CHECK(string, '\'')) { if (!PUT(emitter, '\'')) return 0; } if (!WRITE(emitter, string)) return 0; emitter->indention = 0; spaces = 0; breaks = 0; } } if (!yaml_emitter_write_indicator(emitter, "'", 0, 0, 0)) return 0; emitter->whitespace = 0; emitter->indention = 0; return 1; } static int yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length, int allow_breaks) { yaml_string_t string; int spaces = 0; STRING_ASSIGN(string, value, length); if (!yaml_emitter_write_indicator(emitter, "\"", 1, 0, 0)) return 0; while (string.pointer != string.end) { if (!IS_PRINTABLE(string) || (!emitter->unicode && !IS_ASCII(string)) || IS_BOM(string) || IS_BREAK(string) || CHECK(string, '"') || CHECK(string, '\\')) { unsigned char octet; unsigned int width; unsigned int value; int k; octet = string.pointer[0]; width = (octet & 0x80) == 0x00 ? 1 : (octet & 0xE0) == 0xC0 ? 2 : (octet & 0xF0) == 0xE0 ? 3 : (octet & 0xF8) == 0xF0 ? 4 : 0; value = (octet & 0x80) == 0x00 ? octet & 0x7F : (octet & 0xE0) == 0xC0 ? octet & 0x1F : (octet & 0xF0) == 0xE0 ? octet & 0x0F : (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0; for (k = 1; k < (int)width; k ++) { octet = string.pointer[k]; value = (value << 6) + (octet & 0x3F); } string.pointer += width; if (!PUT(emitter, '\\')) return 0; switch (value) { case 0x00: if (!PUT(emitter, '0')) return 0; break; case 0x07: if (!PUT(emitter, 'a')) return 0; break; case 0x08: if (!PUT(emitter, 'b')) return 0; break; case 0x09: if (!PUT(emitter, 't')) return 0; break; case 0x0A: if (!PUT(emitter, 'n')) return 0; break; case 0x0B: if (!PUT(emitter, 'v')) return 0; break; case 0x0C: if (!PUT(emitter, 'f')) return 0; break; case 0x0D: if (!PUT(emitter, 'r')) return 0; break; case 0x1B: if (!PUT(emitter, 'e')) return 0; break; case 0x22: if (!PUT(emitter, '\"')) return 0; break; case 0x5C: if (!PUT(emitter, '\\')) return 0; break; case 0x85: if (!PUT(emitter, 'N')) return 0; break; case 0xA0: if (!PUT(emitter, '_')) return 0; break; case 0x2028: if (!PUT(emitter, 'L')) return 0; break; case 0x2029: if (!PUT(emitter, 'P')) return 0; break; default: if (value <= 0xFF) { if (!PUT(emitter, 'x')) return 0; width = 2; } else if (value <= 0xFFFF) { if (!PUT(emitter, 'u')) return 0; width = 4; } else { if (!PUT(emitter, 'U')) return 0; width = 8; } for (k = (width-1)*4; k >= 0; k -= 4) { int digit = (value >> k) & 0x0F; if (!PUT(emitter, digit + (digit < 10 ? '0' : 'A'-10))) return 0; } } spaces = 0; } else if (IS_SPACE(string)) { if (allow_breaks && !spaces && emitter->column > emitter->best_width && string.pointer != string.start && string.pointer != string.end - 1) { if (!yaml_emitter_write_indent(emitter)) return 0; if (IS_SPACE_AT(string, 1)) { if (!PUT(emitter, '\\')) return 0; } MOVE(string); } else { if (!WRITE(emitter, string)) return 0; } spaces = 1; } else { if (!WRITE(emitter, string)) return 0; spaces = 0; } } if (!yaml_emitter_write_indicator(emitter, "\"", 0, 0, 0)) return 0; emitter->whitespace = 0; emitter->indention = 0; return 1; } static int yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter, yaml_string_t string) { char indent_hint[2]; char *chomp_hint = NULL; if (IS_SPACE(string) || IS_BREAK(string)) { indent_hint[0] = '0' + (char)emitter->best_indent; indent_hint[1] = '\0'; if (!yaml_emitter_write_indicator(emitter, indent_hint, 0, 0, 0)) return 0; } emitter->open_ended = 0; string.pointer = string.end; if (string.start == string.pointer) { chomp_hint = "-"; } else { do { string.pointer --; } while ((*string.pointer & 0xC0) == 0x80); if (!IS_BREAK(string)) { chomp_hint = "-"; } else if (string.start == string.pointer) { chomp_hint = "+"; emitter->open_ended = 1; } else { do { string.pointer --; } while ((*string.pointer & 0xC0) == 0x80); if (IS_BREAK(string)) { chomp_hint = "+"; emitter->open_ended = 1; } } } if (chomp_hint) { if (!yaml_emitter_write_indicator(emitter, chomp_hint, 0, 0, 0)) return 0; } return 1; } static int yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length) { yaml_string_t string; int breaks = 1; STRING_ASSIGN(string, value, length); if (!yaml_emitter_write_indicator(emitter, "|", 1, 0, 0)) return 0; if (!yaml_emitter_write_block_scalar_hints(emitter, string)) return 0; if (!PUT_BREAK(emitter)) return 0; emitter->indention = 1; emitter->whitespace = 1; while (string.pointer != string.end) { if (IS_BREAK(string)) { if (!WRITE_BREAK(emitter, string)) return 0; emitter->indention = 1; breaks = 1; } else { if (breaks) { if (!yaml_emitter_write_indent(emitter)) return 0; } if (!WRITE(emitter, string)) return 0; emitter->indention = 0; breaks = 0; } } return 1; } static int yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter, yaml_char_t *value, size_t length) { yaml_string_t string; int breaks = 1; int leading_spaces = 1; STRING_ASSIGN(string, value, length); if (!yaml_emitter_write_indicator(emitter, ">", 1, 0, 0)) return 0; if (!yaml_emitter_write_block_scalar_hints(emitter, string)) return 0; if (!PUT_BREAK(emitter)) return 0; emitter->indention = 1; emitter->whitespace = 1; while (string.pointer != string.end) { if (IS_BREAK(string)) { if (!breaks && !leading_spaces && CHECK(string, '\n')) { int k = 0; while (IS_BREAK_AT(string, k)) { k += WIDTH_AT(string, k); } if (!IS_BLANKZ_AT(string, k)) { if (!PUT_BREAK(emitter)) return 0; } } if (!WRITE_BREAK(emitter, string)) return 0; emitter->indention = 1; breaks = 1; } else { if (breaks) { if (!yaml_emitter_write_indent(emitter)) return 0; leading_spaces = IS_BLANK(string); } if (!breaks && IS_SPACE(string) && !IS_SPACE_AT(string, 1) && emitter->column > emitter->best_width) { if (!yaml_emitter_write_indent(emitter)) return 0; MOVE(string); } else { if (!WRITE(emitter, string)) return 0; } emitter->indention = 0; breaks = 0; } } return 1; } yaml-0.8.20/libyaml/LICENSE0000644000000000000000000000204213001717724013367 0ustar0000000000000000Copyright (c) 2006 Kirill Simonov Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. yaml-0.8.20/libyaml/loader.c0000644000000000000000000002716713001717724014013 0ustar0000000000000000 #include "yaml_private.h" /* * API functions. */ YAML_DECLARE(int) yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document); /* * Error handling. */ static int yaml_parser_set_composer_error(yaml_parser_t *parser, const char *problem, yaml_mark_t problem_mark); static int yaml_parser_set_composer_error_context(yaml_parser_t *parser, const char *context, yaml_mark_t context_mark, const char *problem, yaml_mark_t problem_mark); /* * Alias handling. */ static int yaml_parser_register_anchor(yaml_parser_t *parser, int index, yaml_char_t *anchor); /* * Clean up functions. */ static void yaml_parser_delete_aliases(yaml_parser_t *parser); /* * Composer functions. */ static int yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *first_event); static int yaml_parser_load_node(yaml_parser_t *parser, yaml_event_t *first_event); static int yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *first_event); static int yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event); static int yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event); static int yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event); /* * Load the next document of the stream. */ YAML_DECLARE(int) yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document) { yaml_event_t event; assert(parser); /* Non-NULL parser object is expected. */ assert(document); /* Non-NULL document object is expected. */ memset(document, 0, sizeof(yaml_document_t)); if (!STACK_INIT(parser, document->nodes, INITIAL_STACK_SIZE)) goto error; if (!parser->stream_start_produced) { if (!yaml_parser_parse(parser, &event)) goto error; assert(event.type == YAML_STREAM_START_EVENT); /* STREAM-START is expected. */ } if (parser->stream_end_produced) { return 1; } if (!yaml_parser_parse(parser, &event)) goto error; if (event.type == YAML_STREAM_END_EVENT) { return 1; } if (!STACK_INIT(parser, parser->aliases, INITIAL_STACK_SIZE)) goto error; parser->document = document; if (!yaml_parser_load_document(parser, &event)) goto error; yaml_parser_delete_aliases(parser); parser->document = NULL; return 1; error: yaml_parser_delete_aliases(parser); yaml_document_delete(document); parser->document = NULL; return 0; } /* * Set composer error. */ static int yaml_parser_set_composer_error(yaml_parser_t *parser, const char *problem, yaml_mark_t problem_mark) { parser->error = YAML_COMPOSER_ERROR; parser->problem = problem; parser->problem_mark = problem_mark; return 0; } /* * Set composer error with context. */ static int yaml_parser_set_composer_error_context(yaml_parser_t *parser, const char *context, yaml_mark_t context_mark, const char *problem, yaml_mark_t problem_mark) { parser->error = YAML_COMPOSER_ERROR; parser->context = context; parser->context_mark = context_mark; parser->problem = problem; parser->problem_mark = problem_mark; return 0; } /* * Delete the stack of aliases. */ static void yaml_parser_delete_aliases(yaml_parser_t *parser) { while (!STACK_EMPTY(parser, parser->aliases)) { yaml_free(POP(parser, parser->aliases).anchor); } STACK_DEL(parser, parser->aliases); } /* * Compose a document object. */ static int yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *first_event) { yaml_event_t event; assert(first_event->type == YAML_DOCUMENT_START_EVENT); /* DOCUMENT-START is expected. */ parser->document->version_directive = first_event->data.document_start.version_directive; parser->document->tag_directives.start = first_event->data.document_start.tag_directives.start; parser->document->tag_directives.end = first_event->data.document_start.tag_directives.end; parser->document->start_implicit = first_event->data.document_start.implicit; parser->document->start_mark = first_event->start_mark; if (!yaml_parser_parse(parser, &event)) return 0; if (!yaml_parser_load_node(parser, &event)) return 0; if (!yaml_parser_parse(parser, &event)) return 0; assert(event.type == YAML_DOCUMENT_END_EVENT); /* DOCUMENT-END is expected. */ parser->document->end_implicit = event.data.document_end.implicit; parser->document->end_mark = event.end_mark; return 1; } /* * Compose a node. */ static int yaml_parser_load_node(yaml_parser_t *parser, yaml_event_t *first_event) { switch (first_event->type) { case YAML_ALIAS_EVENT: return yaml_parser_load_alias(parser, first_event); case YAML_SCALAR_EVENT: return yaml_parser_load_scalar(parser, first_event); case YAML_SEQUENCE_START_EVENT: return yaml_parser_load_sequence(parser, first_event); case YAML_MAPPING_START_EVENT: return yaml_parser_load_mapping(parser, first_event); default: assert(0); /* Could not happen. */ return 0; } return 0; } /* * Add an anchor. */ static int yaml_parser_register_anchor(yaml_parser_t *parser, int index, yaml_char_t *anchor) { yaml_alias_data_t data; yaml_alias_data_t *alias_data; if (!anchor) return 1; data.anchor = anchor; data.index = index; data.mark = parser->document->nodes.start[index-1].start_mark; for (alias_data = parser->aliases.start; alias_data != parser->aliases.top; alias_data ++) { if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) { yaml_free(anchor); return yaml_parser_set_composer_error_context(parser, "found duplicate anchor; first occurence", alias_data->mark, "second occurence", data.mark); } } if (!PUSH(parser, parser->aliases, data)) { yaml_free(anchor); return 0; } return 1; } /* * Compose a node corresponding to an alias. */ static int yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *first_event) { yaml_char_t *anchor = first_event->data.alias.anchor; yaml_alias_data_t *alias_data; for (alias_data = parser->aliases.start; alias_data != parser->aliases.top; alias_data ++) { if (strcmp((char *)alias_data->anchor, (char *)anchor) == 0) { yaml_free(anchor); return alias_data->index; } } yaml_free(anchor); return yaml_parser_set_composer_error(parser, "found undefined alias", first_event->start_mark); } /* * Compose a scalar node. */ static int yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event) { yaml_node_t node; int index; yaml_char_t *tag = first_event->data.scalar.tag; if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error; if (!tag || strcmp((char *)tag, "!") == 0) { yaml_free(tag); tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SCALAR_TAG); if (!tag) goto error; } SCALAR_NODE_INIT(node, tag, first_event->data.scalar.value, first_event->data.scalar.length, first_event->data.scalar.style, first_event->start_mark, first_event->end_mark); if (!PUSH(parser, parser->document->nodes, node)) goto error; index = parser->document->nodes.top - parser->document->nodes.start; if (!yaml_parser_register_anchor(parser, index, first_event->data.scalar.anchor)) return 0; return index; error: yaml_free(tag); yaml_free(first_event->data.scalar.anchor); yaml_free(first_event->data.scalar.value); return 0; } /* * Compose a sequence node. */ static int yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event) { yaml_event_t event; yaml_node_t node; struct { yaml_node_item_t *start; yaml_node_item_t *end; yaml_node_item_t *top; } items = { NULL, NULL, NULL }; int index, item_index; yaml_char_t *tag = first_event->data.sequence_start.tag; if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error; if (!tag || strcmp((char *)tag, "!") == 0) { yaml_free(tag); tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG); if (!tag) goto error; } if (!STACK_INIT(parser, items, INITIAL_STACK_SIZE)) goto error; SEQUENCE_NODE_INIT(node, tag, items.start, items.end, first_event->data.sequence_start.style, first_event->start_mark, first_event->end_mark); if (!PUSH(parser, parser->document->nodes, node)) goto error; index = parser->document->nodes.top - parser->document->nodes.start; if (!yaml_parser_register_anchor(parser, index, first_event->data.sequence_start.anchor)) return 0; if (!yaml_parser_parse(parser, &event)) return 0; while (event.type != YAML_SEQUENCE_END_EVENT) { if (!STACK_LIMIT(parser, parser->document->nodes.start[index-1].data.sequence.items, INT_MAX-1)) return 0; item_index = yaml_parser_load_node(parser, &event); if (!item_index) return 0; if (!PUSH(parser, parser->document->nodes.start[index-1].data.sequence.items, item_index)) return 0; if (!yaml_parser_parse(parser, &event)) return 0; } parser->document->nodes.start[index-1].end_mark = event.end_mark; return index; error: yaml_free(tag); yaml_free(first_event->data.sequence_start.anchor); return 0; } /* * Compose a mapping node. */ static int yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event) { yaml_event_t event; yaml_node_t node; struct { yaml_node_pair_t *start; yaml_node_pair_t *end; yaml_node_pair_t *top; } pairs = { NULL, NULL, NULL }; int index; yaml_node_pair_t pair; yaml_char_t *tag = first_event->data.mapping_start.tag; if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error; if (!tag || strcmp((char *)tag, "!") == 0) { yaml_free(tag); tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MAPPING_TAG); if (!tag) goto error; } if (!STACK_INIT(parser, pairs, INITIAL_STACK_SIZE)) goto error; MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end, first_event->data.mapping_start.style, first_event->start_mark, first_event->end_mark); if (!PUSH(parser, parser->document->nodes, node)) goto error; index = parser->document->nodes.top - parser->document->nodes.start; if (!yaml_parser_register_anchor(parser, index, first_event->data.mapping_start.anchor)) return 0; if (!yaml_parser_parse(parser, &event)) return 0; while (event.type != YAML_MAPPING_END_EVENT) { if (!STACK_LIMIT(parser, parser->document->nodes.start[index-1].data.mapping.pairs, INT_MAX-1)) return 0; pair.key = yaml_parser_load_node(parser, &event); if (!pair.key) return 0; if (!yaml_parser_parse(parser, &event)) return 0; pair.value = yaml_parser_load_node(parser, &event); if (!pair.value) return 0; if (!PUSH(parser, parser->document->nodes.start[index-1].data.mapping.pairs, pair)) return 0; if (!yaml_parser_parse(parser, &event)) return 0; } parser->document->nodes.start[index-1].end_mark = event.end_mark; return index; error: yaml_free(tag); yaml_free(first_event->data.mapping_start.anchor); return 0; } yaml-0.8.20/libyaml/parser.c0000644000000000000000000013021313001717724014024 0ustar0000000000000000 /* * The parser implements the following grammar: * * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END * implicit_document ::= block_node DOCUMENT-END* * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* * block_node_or_indentless_sequence ::= * ALIAS * | properties (block_content | indentless_block_sequence)? * | block_content * | indentless_block_sequence * block_node ::= ALIAS * | properties block_content? * | block_content * flow_node ::= ALIAS * | properties flow_content? * | flow_content * properties ::= TAG ANCHOR? | ANCHOR TAG? * block_content ::= block_collection | flow_collection | SCALAR * flow_content ::= flow_collection | SCALAR * block_collection ::= block_sequence | block_mapping * flow_collection ::= flow_sequence | flow_mapping * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END * indentless_sequence ::= (BLOCK-ENTRY block_node?)+ * block_mapping ::= BLOCK-MAPPING_START * ((KEY block_node_or_indentless_sequence?)? * (VALUE block_node_or_indentless_sequence?)?)* * BLOCK-END * flow_sequence ::= FLOW-SEQUENCE-START * (flow_sequence_entry FLOW-ENTRY)* * flow_sequence_entry? * FLOW-SEQUENCE-END * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * flow_mapping ::= FLOW-MAPPING-START * (flow_mapping_entry FLOW-ENTRY)* * flow_mapping_entry? * FLOW-MAPPING-END * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? */ #include "yaml_private.h" /* * Peek the next token in the token queue. */ #define PEEK_TOKEN(parser) \ ((parser->token_available || yaml_parser_fetch_more_tokens(parser)) ? \ parser->tokens.head : NULL) /* * Remove the next token from the queue (must be called after PEEK_TOKEN). */ #define SKIP_TOKEN(parser) \ (parser->token_available = 0, \ parser->tokens_parsed ++, \ parser->stream_end_produced = \ (parser->tokens.head->type == YAML_STREAM_END_TOKEN), \ parser->tokens.head ++) /* * Public API declarations. */ YAML_DECLARE(int) yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event); /* * Error handling. */ static int yaml_parser_set_parser_error(yaml_parser_t *parser, const char *problem, yaml_mark_t problem_mark); static int yaml_parser_set_parser_error_context(yaml_parser_t *parser, const char *context, yaml_mark_t context_mark, const char *problem, yaml_mark_t problem_mark); /* * State functions. */ static int yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event, int implicit); static int yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event, int block, int indentless_sequence); static int yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser, yaml_event_t *event, int first); static int yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_block_mapping_key(yaml_parser_t *parser, yaml_event_t *event, int first); static int yaml_parser_parse_block_mapping_value(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser, yaml_event_t *event, int first); static int yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser, yaml_event_t *event); static int yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser, yaml_event_t *event, int first); static int yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser, yaml_event_t *event, int empty); /* * Utility functions. */ static int yaml_parser_process_empty_scalar(yaml_parser_t *parser, yaml_event_t *event, yaml_mark_t mark); static int yaml_parser_process_directives(yaml_parser_t *parser, yaml_version_directive_t **version_directive_ref, yaml_tag_directive_t **tag_directives_start_ref, yaml_tag_directive_t **tag_directives_end_ref); static int yaml_parser_append_tag_directive(yaml_parser_t *parser, yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark); /* * Get the next event. */ YAML_DECLARE(int) yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event) { assert(parser); /* Non-NULL parser object is expected. */ assert(event); /* Non-NULL event object is expected. */ /* Erase the event object. */ memset(event, 0, sizeof(yaml_event_t)); /* No events after the end of the stream or error. */ if (parser->stream_end_produced || parser->error || parser->state == YAML_PARSE_END_STATE) { return 1; } /* Generate the next event. */ return yaml_parser_state_machine(parser, event); } /* * Set parser error. */ static int yaml_parser_set_parser_error(yaml_parser_t *parser, const char *problem, yaml_mark_t problem_mark) { parser->error = YAML_PARSER_ERROR; parser->problem = problem; parser->problem_mark = problem_mark; return 0; } static int yaml_parser_set_parser_error_context(yaml_parser_t *parser, const char *context, yaml_mark_t context_mark, const char *problem, yaml_mark_t problem_mark) { parser->error = YAML_PARSER_ERROR; parser->context = context; parser->context_mark = context_mark; parser->problem = problem; parser->problem_mark = problem_mark; return 0; } /* * State dispatcher. */ static int yaml_parser_state_machine(yaml_parser_t *parser, yaml_event_t *event) { switch (parser->state) { case YAML_PARSE_STREAM_START_STATE: return yaml_parser_parse_stream_start(parser, event); case YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE: return yaml_parser_parse_document_start(parser, event, 1); case YAML_PARSE_DOCUMENT_START_STATE: return yaml_parser_parse_document_start(parser, event, 0); case YAML_PARSE_DOCUMENT_CONTENT_STATE: return yaml_parser_parse_document_content(parser, event); case YAML_PARSE_DOCUMENT_END_STATE: return yaml_parser_parse_document_end(parser, event); case YAML_PARSE_BLOCK_NODE_STATE: return yaml_parser_parse_node(parser, event, 1, 0); case YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: return yaml_parser_parse_node(parser, event, 1, 1); case YAML_PARSE_FLOW_NODE_STATE: return yaml_parser_parse_node(parser, event, 0, 0); case YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: return yaml_parser_parse_block_sequence_entry(parser, event, 1); case YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: return yaml_parser_parse_block_sequence_entry(parser, event, 0); case YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: return yaml_parser_parse_indentless_sequence_entry(parser, event); case YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: return yaml_parser_parse_block_mapping_key(parser, event, 1); case YAML_PARSE_BLOCK_MAPPING_KEY_STATE: return yaml_parser_parse_block_mapping_key(parser, event, 0); case YAML_PARSE_BLOCK_MAPPING_VALUE_STATE: return yaml_parser_parse_block_mapping_value(parser, event); case YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: return yaml_parser_parse_flow_sequence_entry(parser, event, 1); case YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE: return yaml_parser_parse_flow_sequence_entry(parser, event, 0); case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event); case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event); case YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event); case YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: return yaml_parser_parse_flow_mapping_key(parser, event, 1); case YAML_PARSE_FLOW_MAPPING_KEY_STATE: return yaml_parser_parse_flow_mapping_key(parser, event, 0); case YAML_PARSE_FLOW_MAPPING_VALUE_STATE: return yaml_parser_parse_flow_mapping_value(parser, event, 0); case YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: return yaml_parser_parse_flow_mapping_value(parser, event, 1); default: assert(1); /* Invalid state. */ } return 0; } /* * Parse the production: * stream ::= STREAM-START implicit_document? explicit_document* STREAM-END * ************ */ static int yaml_parser_parse_stream_start(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_STREAM_START_TOKEN) { return yaml_parser_set_parser_error(parser, "did not find expected ", token->start_mark); } parser->state = YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE; STREAM_START_EVENT_INIT(*event, token->data.stream_start.encoding, token->start_mark, token->start_mark); SKIP_TOKEN(parser); return 1; } /* * Parse the productions: * implicit_document ::= block_node DOCUMENT-END* * * * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* * ************************* */ static int yaml_parser_parse_document_start(yaml_parser_t *parser, yaml_event_t *event, int implicit) { yaml_token_t *token; yaml_version_directive_t *version_directive = NULL; struct { yaml_tag_directive_t *start; yaml_tag_directive_t *end; } tag_directives = { NULL, NULL }; token = PEEK_TOKEN(parser); if (!token) return 0; /* Parse extra document end indicators. */ if (!implicit) { while (token->type == YAML_DOCUMENT_END_TOKEN) { SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; } } /* Parse an implicit document. */ if (implicit && token->type != YAML_VERSION_DIRECTIVE_TOKEN && token->type != YAML_TAG_DIRECTIVE_TOKEN && token->type != YAML_DOCUMENT_START_TOKEN && token->type != YAML_STREAM_END_TOKEN) { if (!yaml_parser_process_directives(parser, NULL, NULL, NULL)) return 0; if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE)) return 0; parser->state = YAML_PARSE_BLOCK_NODE_STATE; DOCUMENT_START_EVENT_INIT(*event, NULL, NULL, NULL, 1, token->start_mark, token->start_mark); return 1; } /* Parse an explicit document. */ else if (token->type != YAML_STREAM_END_TOKEN) { yaml_mark_t start_mark, end_mark; start_mark = token->start_mark; if (!yaml_parser_process_directives(parser, &version_directive, &tag_directives.start, &tag_directives.end)) return 0; token = PEEK_TOKEN(parser); if (!token) goto error; if (token->type != YAML_DOCUMENT_START_TOKEN) { yaml_parser_set_parser_error(parser, "did not find expected ", token->start_mark); goto error; } if (!PUSH(parser, parser->states, YAML_PARSE_DOCUMENT_END_STATE)) goto error; parser->state = YAML_PARSE_DOCUMENT_CONTENT_STATE; end_mark = token->end_mark; DOCUMENT_START_EVENT_INIT(*event, version_directive, tag_directives.start, tag_directives.end, 0, start_mark, end_mark); SKIP_TOKEN(parser); version_directive = NULL; tag_directives.start = tag_directives.end = NULL; return 1; } /* Parse the stream end. */ else { parser->state = YAML_PARSE_END_STATE; STREAM_END_EVENT_INIT(*event, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } error: yaml_free(version_directive); while (tag_directives.start != tag_directives.end) { yaml_free(tag_directives.end[-1].handle); yaml_free(tag_directives.end[-1].prefix); tag_directives.end --; } yaml_free(tag_directives.start); return 0; } /* * Parse the productions: * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* * *********** */ static int yaml_parser_parse_document_content(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_VERSION_DIRECTIVE_TOKEN || token->type == YAML_TAG_DIRECTIVE_TOKEN || token->type == YAML_DOCUMENT_START_TOKEN || token->type == YAML_DOCUMENT_END_TOKEN || token->type == YAML_STREAM_END_TOKEN) { parser->state = POP(parser, parser->states); return yaml_parser_process_empty_scalar(parser, event, token->start_mark); } else { return yaml_parser_parse_node(parser, event, 1, 0); } } /* * Parse the productions: * implicit_document ::= block_node DOCUMENT-END* * ************* * explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* * ************* */ static int yaml_parser_parse_document_end(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; yaml_mark_t start_mark, end_mark; int implicit = 1; token = PEEK_TOKEN(parser); if (!token) return 0; start_mark = end_mark = token->start_mark; if (token->type == YAML_DOCUMENT_END_TOKEN) { end_mark = token->end_mark; SKIP_TOKEN(parser); implicit = 0; } while (!STACK_EMPTY(parser, parser->tag_directives)) { yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives); yaml_free(tag_directive.handle); yaml_free(tag_directive.prefix); } parser->state = YAML_PARSE_DOCUMENT_START_STATE; DOCUMENT_END_EVENT_INIT(*event, implicit, start_mark, end_mark); return 1; } /* * Parse the productions: * block_node_or_indentless_sequence ::= * ALIAS * ***** * | properties (block_content | indentless_block_sequence)? * ********** * * | block_content | indentless_block_sequence * * * block_node ::= ALIAS * ***** * | properties block_content? * ********** * * | block_content * * * flow_node ::= ALIAS * ***** * | properties flow_content? * ********** * * | flow_content * * * properties ::= TAG ANCHOR? | ANCHOR TAG? * ************************* * block_content ::= block_collection | flow_collection | SCALAR * ****** * flow_content ::= flow_collection | SCALAR * ****** */ static int yaml_parser_parse_node(yaml_parser_t *parser, yaml_event_t *event, int block, int indentless_sequence) { yaml_token_t *token; yaml_char_t *anchor = NULL; yaml_char_t *tag_handle = NULL; yaml_char_t *tag_suffix = NULL; yaml_char_t *tag = NULL; yaml_mark_t start_mark, end_mark, tag_mark; int implicit; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_ALIAS_TOKEN) { parser->state = POP(parser, parser->states); ALIAS_EVENT_INIT(*event, token->data.alias.value, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } else { start_mark = end_mark = token->start_mark; if (token->type == YAML_ANCHOR_TOKEN) { anchor = token->data.anchor.value; start_mark = token->start_mark; end_mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) goto error; if (token->type == YAML_TAG_TOKEN) { tag_handle = token->data.tag.handle; tag_suffix = token->data.tag.suffix; tag_mark = token->start_mark; end_mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) goto error; } } else if (token->type == YAML_TAG_TOKEN) { tag_handle = token->data.tag.handle; tag_suffix = token->data.tag.suffix; start_mark = tag_mark = token->start_mark; end_mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) goto error; if (token->type == YAML_ANCHOR_TOKEN) { anchor = token->data.anchor.value; end_mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) goto error; } } if (tag_handle) { if (!*tag_handle) { tag = tag_suffix; yaml_free(tag_handle); tag_handle = tag_suffix = NULL; } else { yaml_tag_directive_t *tag_directive; for (tag_directive = parser->tag_directives.start; tag_directive != parser->tag_directives.top; tag_directive ++) { if (strcmp((char *)tag_directive->handle, (char *)tag_handle) == 0) { size_t prefix_len = strlen((char *)tag_directive->prefix); size_t suffix_len = strlen((char *)tag_suffix); tag = yaml_malloc(prefix_len+suffix_len+1); if (!tag) { parser->error = YAML_MEMORY_ERROR; goto error; } memcpy(tag, tag_directive->prefix, prefix_len); memcpy(tag+prefix_len, tag_suffix, suffix_len); tag[prefix_len+suffix_len] = '\0'; yaml_free(tag_handle); yaml_free(tag_suffix); tag_handle = tag_suffix = NULL; break; } } if (!tag) { yaml_parser_set_parser_error_context(parser, "while parsing a node", start_mark, "found undefined tag handle", tag_mark); goto error; } } } implicit = (!tag || !*tag); if (indentless_sequence && token->type == YAML_BLOCK_ENTRY_TOKEN) { end_mark = token->end_mark; parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE; SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit, YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark); return 1; } else { if (token->type == YAML_SCALAR_TOKEN) { int plain_implicit = 0; int quoted_implicit = 0; end_mark = token->end_mark; if ((token->data.scalar.style == YAML_PLAIN_SCALAR_STYLE && !tag) || (tag && strcmp((char *)tag, "!") == 0)) { plain_implicit = 1; } else if (!tag) { quoted_implicit = 1; } parser->state = POP(parser, parser->states); SCALAR_EVENT_INIT(*event, anchor, tag, token->data.scalar.value, token->data.scalar.length, plain_implicit, quoted_implicit, token->data.scalar.style, start_mark, end_mark); SKIP_TOKEN(parser); return 1; } else if (token->type == YAML_FLOW_SEQUENCE_START_TOKEN) { end_mark = token->end_mark; parser->state = YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE; SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit, YAML_FLOW_SEQUENCE_STYLE, start_mark, end_mark); return 1; } else if (token->type == YAML_FLOW_MAPPING_START_TOKEN) { end_mark = token->end_mark; parser->state = YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE; MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit, YAML_FLOW_MAPPING_STYLE, start_mark, end_mark); return 1; } else if (block && token->type == YAML_BLOCK_SEQUENCE_START_TOKEN) { end_mark = token->end_mark; parser->state = YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE; SEQUENCE_START_EVENT_INIT(*event, anchor, tag, implicit, YAML_BLOCK_SEQUENCE_STYLE, start_mark, end_mark); return 1; } else if (block && token->type == YAML_BLOCK_MAPPING_START_TOKEN) { end_mark = token->end_mark; parser->state = YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE; MAPPING_START_EVENT_INIT(*event, anchor, tag, implicit, YAML_BLOCK_MAPPING_STYLE, start_mark, end_mark); return 1; } else if (anchor || tag) { yaml_char_t *value = yaml_malloc(1); if (!value) { parser->error = YAML_MEMORY_ERROR; goto error; } value[0] = '\0'; parser->state = POP(parser, parser->states); SCALAR_EVENT_INIT(*event, anchor, tag, value, 0, implicit, 0, YAML_PLAIN_SCALAR_STYLE, start_mark, end_mark); return 1; } else { yaml_parser_set_parser_error_context(parser, (block ? "while parsing a block node" : "while parsing a flow node"), start_mark, "did not find expected node content", token->start_mark); goto error; } } } error: yaml_free(anchor); yaml_free(tag_handle); yaml_free(tag_suffix); yaml_free(tag); return 0; } /* * Parse the productions: * block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END * ******************** *********** * ********* */ static int yaml_parser_parse_block_sequence_entry(yaml_parser_t *parser, yaml_event_t *event, int first) { yaml_token_t *token; if (first) { token = PEEK_TOKEN(parser); if (!PUSH(parser, parser->marks, token->start_mark)) return 0; SKIP_TOKEN(parser); } token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_BLOCK_ENTRY_TOKEN) { yaml_mark_t mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_BLOCK_ENTRY_TOKEN && token->type != YAML_BLOCK_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE)) return 0; return yaml_parser_parse_node(parser, event, 1, 0); } else { parser->state = YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE; return yaml_parser_process_empty_scalar(parser, event, mark); } } else if (token->type == YAML_BLOCK_END_TOKEN) { yaml_mark_t dummy_mark; /* Used to eliminate a compiler warning. */ parser->state = POP(parser, parser->states); dummy_mark = POP(parser, parser->marks); SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } else { return yaml_parser_set_parser_error_context(parser, "while parsing a block collection", POP(parser, parser->marks), "did not find expected '-' indicator", token->start_mark); } } /* * Parse the productions: * indentless_sequence ::= (BLOCK-ENTRY block_node?)+ * *********** * */ static int yaml_parser_parse_indentless_sequence_entry(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_BLOCK_ENTRY_TOKEN) { yaml_mark_t mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_BLOCK_ENTRY_TOKEN && token->type != YAML_KEY_TOKEN && token->type != YAML_VALUE_TOKEN && token->type != YAML_BLOCK_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE)) return 0; return yaml_parser_parse_node(parser, event, 1, 0); } else { parser->state = YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE; return yaml_parser_process_empty_scalar(parser, event, mark); } } else { parser->state = POP(parser, parser->states); SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->start_mark); return 1; } } /* * Parse the productions: * block_mapping ::= BLOCK-MAPPING_START * ******************* * ((KEY block_node_or_indentless_sequence?)? * *** * * (VALUE block_node_or_indentless_sequence?)?)* * * BLOCK-END * ********* */ static int yaml_parser_parse_block_mapping_key(yaml_parser_t *parser, yaml_event_t *event, int first) { yaml_token_t *token; if (first) { token = PEEK_TOKEN(parser); if (!PUSH(parser, parser->marks, token->start_mark)) return 0; SKIP_TOKEN(parser); } token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_KEY_TOKEN) { yaml_mark_t mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_KEY_TOKEN && token->type != YAML_VALUE_TOKEN && token->type != YAML_BLOCK_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_BLOCK_MAPPING_VALUE_STATE)) return 0; return yaml_parser_parse_node(parser, event, 1, 1); } else { parser->state = YAML_PARSE_BLOCK_MAPPING_VALUE_STATE; return yaml_parser_process_empty_scalar(parser, event, mark); } } else if (token->type == YAML_BLOCK_END_TOKEN) { yaml_mark_t dummy_mark; /* Used to eliminate a compiler warning. */ parser->state = POP(parser, parser->states); dummy_mark = POP(parser, parser->marks); MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } else { return yaml_parser_set_parser_error_context(parser, "while parsing a block mapping", POP(parser, parser->marks), "did not find expected key", token->start_mark); } } /* * Parse the productions: * block_mapping ::= BLOCK-MAPPING_START * * ((KEY block_node_or_indentless_sequence?)? * * (VALUE block_node_or_indentless_sequence?)?)* * ***** * * BLOCK-END * */ static int yaml_parser_parse_block_mapping_value(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_VALUE_TOKEN) { yaml_mark_t mark = token->end_mark; SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_KEY_TOKEN && token->type != YAML_VALUE_TOKEN && token->type != YAML_BLOCK_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_BLOCK_MAPPING_KEY_STATE)) return 0; return yaml_parser_parse_node(parser, event, 1, 1); } else { parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE; return yaml_parser_process_empty_scalar(parser, event, mark); } } else { parser->state = YAML_PARSE_BLOCK_MAPPING_KEY_STATE; return yaml_parser_process_empty_scalar(parser, event, token->start_mark); } } /* * Parse the productions: * flow_sequence ::= FLOW-SEQUENCE-START * ******************* * (flow_sequence_entry FLOW-ENTRY)* * * ********** * flow_sequence_entry? * * * FLOW-SEQUENCE-END * ***************** * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * * */ static int yaml_parser_parse_flow_sequence_entry(yaml_parser_t *parser, yaml_event_t *event, int first) { yaml_token_t *token; yaml_mark_t dummy_mark; /* Used to eliminate a compiler warning. */ if (first) { token = PEEK_TOKEN(parser); if (!PUSH(parser, parser->marks, token->start_mark)) return 0; SKIP_TOKEN(parser); } token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN) { if (!first) { if (token->type == YAML_FLOW_ENTRY_TOKEN) { SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; } else { return yaml_parser_set_parser_error_context(parser, "while parsing a flow sequence", POP(parser, parser->marks), "did not find expected ',' or ']'", token->start_mark); } } if (token->type == YAML_KEY_TOKEN) { parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE; MAPPING_START_EVENT_INIT(*event, NULL, NULL, 1, YAML_FLOW_MAPPING_STYLE, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } else if (token->type != YAML_FLOW_SEQUENCE_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE)) return 0; return yaml_parser_parse_node(parser, event, 0, 0); } } parser->state = POP(parser, parser->states); dummy_mark = POP(parser, parser->marks); SEQUENCE_END_EVENT_INIT(*event, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } /* * Parse the productions: * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * *** * */ static int yaml_parser_parse_flow_sequence_entry_mapping_key(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_VALUE_TOKEN && token->type != YAML_FLOW_ENTRY_TOKEN && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE)) return 0; return yaml_parser_parse_node(parser, event, 0, 0); } else { yaml_mark_t mark = token->end_mark; SKIP_TOKEN(parser); parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE; return yaml_parser_process_empty_scalar(parser, event, mark); } } /* * Parse the productions: * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * ***** * */ static int yaml_parser_parse_flow_sequence_entry_mapping_value(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type == YAML_VALUE_TOKEN) { SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_FLOW_ENTRY_TOKEN && token->type != YAML_FLOW_SEQUENCE_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE)) return 0; return yaml_parser_parse_node(parser, event, 0, 0); } } parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE; return yaml_parser_process_empty_scalar(parser, event, token->start_mark); } /* * Parse the productions: * flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * * */ static int yaml_parser_parse_flow_sequence_entry_mapping_end(yaml_parser_t *parser, yaml_event_t *event) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; parser->state = YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE; MAPPING_END_EVENT_INIT(*event, token->start_mark, token->start_mark); return 1; } /* * Parse the productions: * flow_mapping ::= FLOW-MAPPING-START * ****************** * (flow_mapping_entry FLOW-ENTRY)* * * ********** * flow_mapping_entry? * ****************** * FLOW-MAPPING-END * **************** * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * * *** * */ static int yaml_parser_parse_flow_mapping_key(yaml_parser_t *parser, yaml_event_t *event, int first) { yaml_token_t *token; yaml_mark_t dummy_mark; /* Used to eliminate a compiler warning. */ if (first) { token = PEEK_TOKEN(parser); if (!PUSH(parser, parser->marks, token->start_mark)) return 0; SKIP_TOKEN(parser); } token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_FLOW_MAPPING_END_TOKEN) { if (!first) { if (token->type == YAML_FLOW_ENTRY_TOKEN) { SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; } else { return yaml_parser_set_parser_error_context(parser, "while parsing a flow mapping", POP(parser, parser->marks), "did not find expected ',' or '}'", token->start_mark); } } if (token->type == YAML_KEY_TOKEN) { SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_VALUE_TOKEN && token->type != YAML_FLOW_ENTRY_TOKEN && token->type != YAML_FLOW_MAPPING_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_FLOW_MAPPING_VALUE_STATE)) return 0; return yaml_parser_parse_node(parser, event, 0, 0); } else { parser->state = YAML_PARSE_FLOW_MAPPING_VALUE_STATE; return yaml_parser_process_empty_scalar(parser, event, token->start_mark); } } else if (token->type != YAML_FLOW_MAPPING_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE)) return 0; return yaml_parser_parse_node(parser, event, 0, 0); } } parser->state = POP(parser, parser->states); dummy_mark = POP(parser, parser->marks); MAPPING_END_EVENT_INIT(*event, token->start_mark, token->end_mark); SKIP_TOKEN(parser); return 1; } /* * Parse the productions: * flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? * * ***** * */ static int yaml_parser_parse_flow_mapping_value(yaml_parser_t *parser, yaml_event_t *event, int empty) { yaml_token_t *token; token = PEEK_TOKEN(parser); if (!token) return 0; if (empty) { parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE; return yaml_parser_process_empty_scalar(parser, event, token->start_mark); } if (token->type == YAML_VALUE_TOKEN) { SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) return 0; if (token->type != YAML_FLOW_ENTRY_TOKEN && token->type != YAML_FLOW_MAPPING_END_TOKEN) { if (!PUSH(parser, parser->states, YAML_PARSE_FLOW_MAPPING_KEY_STATE)) return 0; return yaml_parser_parse_node(parser, event, 0, 0); } } parser->state = YAML_PARSE_FLOW_MAPPING_KEY_STATE; return yaml_parser_process_empty_scalar(parser, event, token->start_mark); } /* * Generate an empty scalar event. */ static int yaml_parser_process_empty_scalar(yaml_parser_t *parser, yaml_event_t *event, yaml_mark_t mark) { yaml_char_t *value; value = yaml_malloc(1); if (!value) { parser->error = YAML_MEMORY_ERROR; return 0; } value[0] = '\0'; SCALAR_EVENT_INIT(*event, NULL, NULL, value, 0, 1, 0, YAML_PLAIN_SCALAR_STYLE, mark, mark); return 1; } /* * Parse directives. */ static int yaml_parser_process_directives(yaml_parser_t *parser, yaml_version_directive_t **version_directive_ref, yaml_tag_directive_t **tag_directives_start_ref, yaml_tag_directive_t **tag_directives_end_ref) { yaml_tag_directive_t default_tag_directives[] = { {(yaml_char_t *)"!", (yaml_char_t *)"!"}, {(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"}, {NULL, NULL} }; yaml_tag_directive_t *default_tag_directive; yaml_version_directive_t *version_directive = NULL; struct { yaml_tag_directive_t *start; yaml_tag_directive_t *end; yaml_tag_directive_t *top; } tag_directives = { NULL, NULL, NULL }; yaml_token_t *token; if (!STACK_INIT(parser, tag_directives, INITIAL_STACK_SIZE)) goto error; token = PEEK_TOKEN(parser); if (!token) goto error; while (token->type == YAML_VERSION_DIRECTIVE_TOKEN || token->type == YAML_TAG_DIRECTIVE_TOKEN) { if (token->type == YAML_VERSION_DIRECTIVE_TOKEN) { if (version_directive) { yaml_parser_set_parser_error(parser, "found duplicate %YAML directive", token->start_mark); goto error; } if (token->data.version_directive.major != 1 || token->data.version_directive.minor != 1) { yaml_parser_set_parser_error(parser, "found incompatible YAML document", token->start_mark); goto error; } version_directive = yaml_malloc(sizeof(yaml_version_directive_t)); if (!version_directive) { parser->error = YAML_MEMORY_ERROR; goto error; } version_directive->major = token->data.version_directive.major; version_directive->minor = token->data.version_directive.minor; } else if (token->type == YAML_TAG_DIRECTIVE_TOKEN) { yaml_tag_directive_t value; value.handle = token->data.tag_directive.handle; value.prefix = token->data.tag_directive.prefix; if (!yaml_parser_append_tag_directive(parser, value, 0, token->start_mark)) goto error; if (!PUSH(parser, tag_directives, value)) goto error; } SKIP_TOKEN(parser); token = PEEK_TOKEN(parser); if (!token) goto error; } for (default_tag_directive = default_tag_directives; default_tag_directive->handle; default_tag_directive++) { if (!yaml_parser_append_tag_directive(parser, *default_tag_directive, 1, token->start_mark)) goto error; } if (version_directive_ref) { *version_directive_ref = version_directive; } if (tag_directives_start_ref) { if (STACK_EMPTY(parser, tag_directives)) { *tag_directives_start_ref = *tag_directives_end_ref = NULL; STACK_DEL(parser, tag_directives); } else { *tag_directives_start_ref = tag_directives.start; *tag_directives_end_ref = tag_directives.top; } } else { STACK_DEL(parser, tag_directives); } return 1; error: yaml_free(version_directive); while (!STACK_EMPTY(parser, tag_directives)) { yaml_tag_directive_t tag_directive = POP(parser, tag_directives); yaml_free(tag_directive.handle); yaml_free(tag_directive.prefix); } STACK_DEL(parser, tag_directives); return 0; } /* * Append a tag directive to the directives stack. */ static int yaml_parser_append_tag_directive(yaml_parser_t *parser, yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark) { yaml_tag_directive_t *tag_directive; yaml_tag_directive_t copy = { NULL, NULL }; for (tag_directive = parser->tag_directives.start; tag_directive != parser->tag_directives.top; tag_directive ++) { if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) { if (allow_duplicates) return 1; return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark); } } copy.handle = yaml_strdup(value.handle); copy.prefix = yaml_strdup(value.prefix); if (!copy.handle || !copy.prefix) { parser->error = YAML_MEMORY_ERROR; goto error; } if (!PUSH(parser, parser->tag_directives, copy)) goto error; return 1; error: yaml_free(copy.handle); yaml_free(copy.prefix); return 0; } yaml-0.8.20/libyaml/reader.c0000644000000000000000000004046213001717724014000 0ustar0000000000000000 #include "yaml_private.h" /* * Declarations. */ static int yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem, size_t offset, int value); static int yaml_parser_update_raw_buffer(yaml_parser_t *parser); static int yaml_parser_determine_encoding(yaml_parser_t *parser); YAML_DECLARE(int) yaml_parser_update_buffer(yaml_parser_t *parser, size_t length); /* * Set the reader error and return 0. */ static int yaml_parser_set_reader_error(yaml_parser_t *parser, const char *problem, size_t offset, int value) { parser->error = YAML_READER_ERROR; parser->problem = problem; parser->problem_offset = offset; parser->problem_value = value; return 0; } /* * Byte order marks. */ #define BOM_UTF8 "\xef\xbb\xbf" #define BOM_UTF16LE "\xff\xfe" #define BOM_UTF16BE "\xfe\xff" /* * Determine the input stream encoding by checking the BOM symbol. If no BOM is * found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure. */ static int yaml_parser_determine_encoding(yaml_parser_t *parser) { /* Ensure that we had enough bytes in the raw buffer. */ while (!parser->eof && parser->raw_buffer.last - parser->raw_buffer.pointer < 3) { if (!yaml_parser_update_raw_buffer(parser)) { return 0; } } /* Determine the encoding. */ if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2 && !memcmp(parser->raw_buffer.pointer, BOM_UTF16LE, 2)) { parser->encoding = YAML_UTF16LE_ENCODING; parser->raw_buffer.pointer += 2; parser->offset += 2; } else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 2 && !memcmp(parser->raw_buffer.pointer, BOM_UTF16BE, 2)) { parser->encoding = YAML_UTF16BE_ENCODING; parser->raw_buffer.pointer += 2; parser->offset += 2; } else if (parser->raw_buffer.last - parser->raw_buffer.pointer >= 3 && !memcmp(parser->raw_buffer.pointer, BOM_UTF8, 3)) { parser->encoding = YAML_UTF8_ENCODING; parser->raw_buffer.pointer += 3; parser->offset += 3; } else { parser->encoding = YAML_UTF8_ENCODING; } return 1; } /* * Update the raw buffer. */ static int yaml_parser_update_raw_buffer(yaml_parser_t *parser) { size_t size_read = 0; /* Return if the raw buffer is full. */ if (parser->raw_buffer.start == parser->raw_buffer.pointer && parser->raw_buffer.last == parser->raw_buffer.end) return 1; /* Return on EOF. */ if (parser->eof) return 1; /* Move the remaining bytes in the raw buffer to the beginning. */ if (parser->raw_buffer.start < parser->raw_buffer.pointer && parser->raw_buffer.pointer < parser->raw_buffer.last) { memmove(parser->raw_buffer.start, parser->raw_buffer.pointer, parser->raw_buffer.last - parser->raw_buffer.pointer); } parser->raw_buffer.last -= parser->raw_buffer.pointer - parser->raw_buffer.start; parser->raw_buffer.pointer = parser->raw_buffer.start; /* Call the read handler to fill the buffer. */ if (!parser->read_handler(parser->read_handler_data, parser->raw_buffer.last, parser->raw_buffer.end - parser->raw_buffer.last, &size_read)) { return yaml_parser_set_reader_error(parser, "input error", parser->offset, -1); } parser->raw_buffer.last += size_read; if (!size_read) { parser->eof = 1; } return 1; } /* * Ensure that the buffer contains at least `length` characters. * Return 1 on success, 0 on failure. * * The length is supposed to be significantly less that the buffer size. */ YAML_DECLARE(int) yaml_parser_update_buffer(yaml_parser_t *parser, size_t length) { int first = 1; assert(parser->read_handler); /* Read handler must be set. */ /* If the EOF flag is set and the raw buffer is empty, do nothing. */ if (parser->eof && parser->raw_buffer.pointer == parser->raw_buffer.last) return 1; /* Return if the buffer contains enough characters. */ if (parser->unread >= length) return 1; /* Determine the input encoding if it is not known yet. */ if (!parser->encoding) { if (!yaml_parser_determine_encoding(parser)) return 0; } /* Move the unread characters to the beginning of the buffer. */ if (parser->buffer.start < parser->buffer.pointer && parser->buffer.pointer < parser->buffer.last) { size_t size = parser->buffer.last - parser->buffer.pointer; memmove(parser->buffer.start, parser->buffer.pointer, size); parser->buffer.pointer = parser->buffer.start; parser->buffer.last = parser->buffer.start + size; } else if (parser->buffer.pointer == parser->buffer.last) { parser->buffer.pointer = parser->buffer.start; parser->buffer.last = parser->buffer.start; } /* Fill the buffer until it has enough characters. */ while (parser->unread < length) { /* Fill the raw buffer if necessary. */ if (!first || parser->raw_buffer.pointer == parser->raw_buffer.last) { if (!yaml_parser_update_raw_buffer(parser)) return 0; } first = 0; /* Decode the raw buffer. */ while (parser->raw_buffer.pointer != parser->raw_buffer.last) { unsigned int value = 0, value2 = 0; int incomplete = 0; unsigned char octet; unsigned int width = 0; int low, high; size_t k; size_t raw_unread = parser->raw_buffer.last - parser->raw_buffer.pointer; /* Decode the next character. */ switch (parser->encoding) { case YAML_UTF8_ENCODING: /* * Decode a UTF-8 character. Check RFC 3629 * (http://www.ietf.org/rfc/rfc3629.txt) for more details. * * The following table (taken from the RFC) is used for * decoding. * * Char. number range | UTF-8 octet sequence * (hexadecimal) | (binary) * --------------------+------------------------------------ * 0000 0000-0000 007F | 0xxxxxxx * 0000 0080-0000 07FF | 110xxxxx 10xxxxxx * 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx * 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx * * Additionally, the characters in the range 0xD800-0xDFFF * are prohibited as they are reserved for use with UTF-16 * surrogate pairs. */ /* Determine the length of the UTF-8 sequence. */ octet = parser->raw_buffer.pointer[0]; width = (octet & 0x80) == 0x00 ? 1 : (octet & 0xE0) == 0xC0 ? 2 : (octet & 0xF0) == 0xE0 ? 3 : (octet & 0xF8) == 0xF0 ? 4 : 0; /* Check if the leading octet is valid. */ if (!width) return yaml_parser_set_reader_error(parser, "invalid leading UTF-8 octet", parser->offset, octet); /* Check if the raw buffer contains an incomplete character. */ if (width > raw_unread) { if (parser->eof) { return yaml_parser_set_reader_error(parser, "incomplete UTF-8 octet sequence", parser->offset, -1); } incomplete = 1; break; } /* Decode the leading octet. */ value = (octet & 0x80) == 0x00 ? octet & 0x7F : (octet & 0xE0) == 0xC0 ? octet & 0x1F : (octet & 0xF0) == 0xE0 ? octet & 0x0F : (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0; /* Check and decode the trailing octets. */ for (k = 1; k < width; k ++) { octet = parser->raw_buffer.pointer[k]; /* Check if the octet is valid. */ if ((octet & 0xC0) != 0x80) return yaml_parser_set_reader_error(parser, "invalid trailing UTF-8 octet", parser->offset+k, octet); /* Decode the octet. */ value = (value << 6) + (octet & 0x3F); } /* Check the length of the sequence against the value. */ if (!((width == 1) || (width == 2 && value >= 0x80) || (width == 3 && value >= 0x800) || (width == 4 && value >= 0x10000))) return yaml_parser_set_reader_error(parser, "invalid length of a UTF-8 sequence", parser->offset, -1); /* Check the range of the value. */ if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) return yaml_parser_set_reader_error(parser, "invalid Unicode character", parser->offset, value); break; case YAML_UTF16LE_ENCODING: case YAML_UTF16BE_ENCODING: low = (parser->encoding == YAML_UTF16LE_ENCODING ? 0 : 1); high = (parser->encoding == YAML_UTF16LE_ENCODING ? 1 : 0); /* * The UTF-16 encoding is not as simple as one might * naively think. Check RFC 2781 * (http://www.ietf.org/rfc/rfc2781.txt). * * Normally, two subsequent bytes describe a Unicode * character. However a special technique (called a * surrogate pair) is used for specifying character * values larger than 0xFFFF. * * A surrogate pair consists of two pseudo-characters: * high surrogate area (0xD800-0xDBFF) * low surrogate area (0xDC00-0xDFFF) * * The following formulas are used for decoding * and encoding characters using surrogate pairs: * * U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF) * U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF) * W1 = 110110yyyyyyyyyy * W2 = 110111xxxxxxxxxx * * where U is the character value, W1 is the high surrogate * area, W2 is the low surrogate area. */ /* Check for incomplete UTF-16 character. */ if (raw_unread < 2) { if (parser->eof) { return yaml_parser_set_reader_error(parser, "incomplete UTF-16 character", parser->offset, -1); } incomplete = 1; break; } /* Get the character. */ value = parser->raw_buffer.pointer[low] + (parser->raw_buffer.pointer[high] << 8); /* Check for unexpected low surrogate area. */ if ((value & 0xFC00) == 0xDC00) return yaml_parser_set_reader_error(parser, "unexpected low surrogate area", parser->offset, value); /* Check for a high surrogate area. */ if ((value & 0xFC00) == 0xD800) { width = 4; /* Check for incomplete surrogate pair. */ if (raw_unread < 4) { if (parser->eof) { return yaml_parser_set_reader_error(parser, "incomplete UTF-16 surrogate pair", parser->offset, -1); } incomplete = 1; break; } /* Get the next character. */ value2 = parser->raw_buffer.pointer[low+2] + (parser->raw_buffer.pointer[high+2] << 8); /* Check for a low surrogate area. */ if ((value2 & 0xFC00) != 0xDC00) return yaml_parser_set_reader_error(parser, "expected low surrogate area", parser->offset+2, value2); /* Generate the value of the surrogate pair. */ value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF); } else { width = 2; } break; default: assert(1); /* Impossible. */ } /* Check if the raw buffer contains enough bytes to form a character. */ if (incomplete) break; /* * Check if the character is in the allowed range: * #x9 | #xA | #xD | [#x20-#x7E] (8 bit) * | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit) * | [#x10000-#x10FFFF] (32 bit) */ if (! (value == 0x09 || value == 0x0A || value == 0x0D || (value >= 0x20 && value <= 0x7E) || (value == 0x85) || (value >= 0xA0 && value <= 0xD7FF) || (value >= 0xE000 && value <= 0xFFFD) || (value >= 0x10000 && value <= 0x10FFFF))) return yaml_parser_set_reader_error(parser, "control characters are not allowed", parser->offset, value); /* Move the raw pointers. */ parser->raw_buffer.pointer += width; parser->offset += width; /* Finally put the character into the buffer. */ /* 0000 0000-0000 007F -> 0xxxxxxx */ if (value <= 0x7F) { *(parser->buffer.last++) = value; } /* 0000 0080-0000 07FF -> 110xxxxx 10xxxxxx */ else if (value <= 0x7FF) { *(parser->buffer.last++) = 0xC0 + (value >> 6); *(parser->buffer.last++) = 0x80 + (value & 0x3F); } /* 0000 0800-0000 FFFF -> 1110xxxx 10xxxxxx 10xxxxxx */ else if (value <= 0xFFFF) { *(parser->buffer.last++) = 0xE0 + (value >> 12); *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F); *(parser->buffer.last++) = 0x80 + (value & 0x3F); } /* 0001 0000-0010 FFFF -> 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ else { *(parser->buffer.last++) = 0xF0 + (value >> 18); *(parser->buffer.last++) = 0x80 + ((value >> 12) & 0x3F); *(parser->buffer.last++) = 0x80 + ((value >> 6) & 0x3F); *(parser->buffer.last++) = 0x80 + (value & 0x3F); } parser->unread ++; } /* On EOF, put NUL into the buffer and return. */ if (parser->eof) { *(parser->buffer.last++) = '\0'; parser->unread ++; return 1; } } if (parser->offset >= PTRDIFF_MAX) return yaml_parser_set_reader_error(parser, "input is too long", PTRDIFF_MAX, -1); return 1; } yaml-0.8.20/libyaml/scanner.c0000644000000000000000000027777713001717724014214 0ustar0000000000000000 /* * Introduction * ************ * * The following notes assume that you are familiar with the YAML specification * (http://yaml.org/spec/cvs/current.html). We mostly follow it, although in * some cases we are less restrictive that it requires. * * The process of transforming a YAML stream into a sequence of events is * divided on two steps: Scanning and Parsing. * * The Scanner transforms the input stream into a sequence of tokens, while the * parser transform the sequence of tokens produced by the Scanner into a * sequence of parsing events. * * The Scanner is rather clever and complicated. The Parser, on the contrary, * is a straightforward implementation of a recursive-descendant parser (or, * LL(1) parser, as it is usually called). * * Actually there are two issues of Scanning that might be called "clever", the * rest is quite straightforward. The issues are "block collection start" and * "simple keys". Both issues are explained below in details. * * Here the Scanning step is explained and implemented. We start with the list * of all the tokens produced by the Scanner together with short descriptions. * * Now, tokens: * * STREAM-START(encoding) # The stream start. * STREAM-END # The stream end. * VERSION-DIRECTIVE(major,minor) # The '%YAML' directive. * TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive. * DOCUMENT-START # '---' * DOCUMENT-END # '...' * BLOCK-SEQUENCE-START # Indentation increase denoting a block * BLOCK-MAPPING-START # sequence or a block mapping. * BLOCK-END # Indentation decrease. * FLOW-SEQUENCE-START # '[' * FLOW-SEQUENCE-END # ']' * BLOCK-SEQUENCE-START # '{' * BLOCK-SEQUENCE-END # '}' * BLOCK-ENTRY # '-' * FLOW-ENTRY # ',' * KEY # '?' or nothing (simple keys). * VALUE # ':' * ALIAS(anchor) # '*anchor' * ANCHOR(anchor) # '&anchor' * TAG(handle,suffix) # '!handle!suffix' * SCALAR(value,style) # A scalar. * * The following two tokens are "virtual" tokens denoting the beginning and the * end of the stream: * * STREAM-START(encoding) * STREAM-END * * We pass the information about the input stream encoding with the * STREAM-START token. * * The next two tokens are responsible for tags: * * VERSION-DIRECTIVE(major,minor) * TAG-DIRECTIVE(handle,prefix) * * Example: * * %YAML 1.1 * %TAG ! !foo * %TAG !yaml! tag:yaml.org,2002: * --- * * The correspoding sequence of tokens: * * STREAM-START(utf-8) * VERSION-DIRECTIVE(1,1) * TAG-DIRECTIVE("!","!foo") * TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:") * DOCUMENT-START * STREAM-END * * Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole * line. * * The document start and end indicators are represented by: * * DOCUMENT-START * DOCUMENT-END * * Note that if a YAML stream contains an implicit document (without '---' * and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be * produced. * * In the following examples, we present whole documents together with the * produced tokens. * * 1. An implicit document: * * 'a scalar' * * Tokens: * * STREAM-START(utf-8) * SCALAR("a scalar",single-quoted) * STREAM-END * * 2. An explicit document: * * --- * 'a scalar' * ... * * Tokens: * * STREAM-START(utf-8) * DOCUMENT-START * SCALAR("a scalar",single-quoted) * DOCUMENT-END * STREAM-END * * 3. Several documents in a stream: * * 'a scalar' * --- * 'another scalar' * --- * 'yet another scalar' * * Tokens: * * STREAM-START(utf-8) * SCALAR("a scalar",single-quoted) * DOCUMENT-START * SCALAR("another scalar",single-quoted) * DOCUMENT-START * SCALAR("yet another scalar",single-quoted) * STREAM-END * * We have already introduced the SCALAR token above. The following tokens are * used to describe aliases, anchors, tag, and scalars: * * ALIAS(anchor) * ANCHOR(anchor) * TAG(handle,suffix) * SCALAR(value,style) * * The following series of examples illustrate the usage of these tokens: * * 1. A recursive sequence: * * &A [ *A ] * * Tokens: * * STREAM-START(utf-8) * ANCHOR("A") * FLOW-SEQUENCE-START * ALIAS("A") * FLOW-SEQUENCE-END * STREAM-END * * 2. A tagged scalar: * * !!float "3.14" # A good approximation. * * Tokens: * * STREAM-START(utf-8) * TAG("!!","float") * SCALAR("3.14",double-quoted) * STREAM-END * * 3. Various scalar styles: * * --- # Implicit empty plain scalars do not produce tokens. * --- a plain scalar * --- 'a single-quoted scalar' * --- "a double-quoted scalar" * --- |- * a literal scalar * --- >- * a folded * scalar * * Tokens: * * STREAM-START(utf-8) * DOCUMENT-START * DOCUMENT-START * SCALAR("a plain scalar",plain) * DOCUMENT-START * SCALAR("a single-quoted scalar",single-quoted) * DOCUMENT-START * SCALAR("a double-quoted scalar",double-quoted) * DOCUMENT-START * SCALAR("a literal scalar",literal) * DOCUMENT-START * SCALAR("a folded scalar",folded) * STREAM-END * * Now it's time to review collection-related tokens. We will start with * flow collections: * * FLOW-SEQUENCE-START * FLOW-SEQUENCE-END * FLOW-MAPPING-START * FLOW-MAPPING-END * FLOW-ENTRY * KEY * VALUE * * The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and * FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}' * correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the * indicators '?' and ':', which are used for denoting mapping keys and values, * are represented by the KEY and VALUE tokens. * * The following examples show flow collections: * * 1. A flow sequence: * * [item 1, item 2, item 3] * * Tokens: * * STREAM-START(utf-8) * FLOW-SEQUENCE-START * SCALAR("item 1",plain) * FLOW-ENTRY * SCALAR("item 2",plain) * FLOW-ENTRY * SCALAR("item 3",plain) * FLOW-SEQUENCE-END * STREAM-END * * 2. A flow mapping: * * { * a simple key: a value, # Note that the KEY token is produced. * ? a complex key: another value, * } * * Tokens: * * STREAM-START(utf-8) * FLOW-MAPPING-START * KEY * SCALAR("a simple key",plain) * VALUE * SCALAR("a value",plain) * FLOW-ENTRY * KEY * SCALAR("a complex key",plain) * VALUE * SCALAR("another value",plain) * FLOW-ENTRY * FLOW-MAPPING-END * STREAM-END * * A simple key is a key which is not denoted by the '?' indicator. Note that * the Scanner still produce the KEY token whenever it encounters a simple key. * * For scanning block collections, the following tokens are used (note that we * repeat KEY and VALUE here): * * BLOCK-SEQUENCE-START * BLOCK-MAPPING-START * BLOCK-END * BLOCK-ENTRY * KEY * VALUE * * The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation * increase that precedes a block collection (cf. the INDENT token in Python). * The token BLOCK-END denote indentation decrease that ends a block collection * (cf. the DEDENT token in Python). However YAML has some syntax pecularities * that makes detections of these tokens more complex. * * The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators * '-', '?', and ':' correspondingly. * * The following examples show how the tokens BLOCK-SEQUENCE-START, * BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner: * * 1. Block sequences: * * - item 1 * - item 2 * - * - item 3.1 * - item 3.2 * - * key 1: value 1 * key 2: value 2 * * Tokens: * * STREAM-START(utf-8) * BLOCK-SEQUENCE-START * BLOCK-ENTRY * SCALAR("item 1",plain) * BLOCK-ENTRY * SCALAR("item 2",plain) * BLOCK-ENTRY * BLOCK-SEQUENCE-START * BLOCK-ENTRY * SCALAR("item 3.1",plain) * BLOCK-ENTRY * SCALAR("item 3.2",plain) * BLOCK-END * BLOCK-ENTRY * BLOCK-MAPPING-START * KEY * SCALAR("key 1",plain) * VALUE * SCALAR("value 1",plain) * KEY * SCALAR("key 2",plain) * VALUE * SCALAR("value 2",plain) * BLOCK-END * BLOCK-END * STREAM-END * * 2. Block mappings: * * a simple key: a value # The KEY token is produced here. * ? a complex key * : another value * a mapping: * key 1: value 1 * key 2: value 2 * a sequence: * - item 1 * - item 2 * * Tokens: * * STREAM-START(utf-8) * BLOCK-MAPPING-START * KEY * SCALAR("a simple key",plain) * VALUE * SCALAR("a value",plain) * KEY * SCALAR("a complex key",plain) * VALUE * SCALAR("another value",plain) * KEY * SCALAR("a mapping",plain) * BLOCK-MAPPING-START * KEY * SCALAR("key 1",plain) * VALUE * SCALAR("value 1",plain) * KEY * SCALAR("key 2",plain) * VALUE * SCALAR("value 2",plain) * BLOCK-END * KEY * SCALAR("a sequence",plain) * VALUE * BLOCK-SEQUENCE-START * BLOCK-ENTRY * SCALAR("item 1",plain) * BLOCK-ENTRY * SCALAR("item 2",plain) * BLOCK-END * BLOCK-END * STREAM-END * * YAML does not always require to start a new block collection from a new * line. If the current line contains only '-', '?', and ':' indicators, a new * block collection may start at the current line. The following examples * illustrate this case: * * 1. Collections in a sequence: * * - - item 1 * - item 2 * - key 1: value 1 * key 2: value 2 * - ? complex key * : complex value * * Tokens: * * STREAM-START(utf-8) * BLOCK-SEQUENCE-START * BLOCK-ENTRY * BLOCK-SEQUENCE-START * BLOCK-ENTRY * SCALAR("item 1",plain) * BLOCK-ENTRY * SCALAR("item 2",plain) * BLOCK-END * BLOCK-ENTRY * BLOCK-MAPPING-START * KEY * SCALAR("key 1",plain) * VALUE * SCALAR("value 1",plain) * KEY * SCALAR("key 2",plain) * VALUE * SCALAR("value 2",plain) * BLOCK-END * BLOCK-ENTRY * BLOCK-MAPPING-START * KEY * SCALAR("complex key") * VALUE * SCALAR("complex value") * BLOCK-END * BLOCK-END * STREAM-END * * 2. Collections in a mapping: * * ? a sequence * : - item 1 * - item 2 * ? a mapping * : key 1: value 1 * key 2: value 2 * * Tokens: * * STREAM-START(utf-8) * BLOCK-MAPPING-START * KEY * SCALAR("a sequence",plain) * VALUE * BLOCK-SEQUENCE-START * BLOCK-ENTRY * SCALAR("item 1",plain) * BLOCK-ENTRY * SCALAR("item 2",plain) * BLOCK-END * KEY * SCALAR("a mapping",plain) * VALUE * BLOCK-MAPPING-START * KEY * SCALAR("key 1",plain) * VALUE * SCALAR("value 1",plain) * KEY * SCALAR("key 2",plain) * VALUE * SCALAR("value 2",plain) * BLOCK-END * BLOCK-END * STREAM-END * * YAML also permits non-indented sequences if they are included into a block * mapping. In this case, the token BLOCK-SEQUENCE-START is not produced: * * key: * - item 1 # BLOCK-SEQUENCE-START is NOT produced here. * - item 2 * * Tokens: * * STREAM-START(utf-8) * BLOCK-MAPPING-START * KEY * SCALAR("key",plain) * VALUE * BLOCK-ENTRY * SCALAR("item 1",plain) * BLOCK-ENTRY * SCALAR("item 2",plain) * BLOCK-END */ #include "yaml_private.h" /* * Ensure that the buffer contains the required number of characters. * Return 1 on success, 0 on failure (reader error or memory error). */ #define CACHE(parser,length) \ (parser->unread >= (length) \ ? 1 \ : yaml_parser_update_buffer(parser, (length))) /* * Advance the buffer pointer. */ #define SKIP(parser) \ (parser->mark.index ++, \ parser->mark.column ++, \ parser->unread --, \ parser->buffer.pointer += WIDTH(parser->buffer)) #define SKIP_LINE(parser) \ (IS_CRLF(parser->buffer) ? \ (parser->mark.index += 2, \ parser->mark.column = 0, \ parser->mark.line ++, \ parser->unread -= 2, \ parser->buffer.pointer += 2) : \ IS_BREAK(parser->buffer) ? \ (parser->mark.index ++, \ parser->mark.column = 0, \ parser->mark.line ++, \ parser->unread --, \ parser->buffer.pointer += WIDTH(parser->buffer)) : 0) /* * Copy a character to a string buffer and advance pointers. */ #define READ(parser,string) \ (STRING_EXTEND(parser,string) ? \ (COPY(string,parser->buffer), \ parser->mark.index ++, \ parser->mark.column ++, \ parser->unread --, \ 1) : 0) /* * Copy a line break character to a string buffer and advance pointers. */ #define READ_LINE(parser,string) \ (STRING_EXTEND(parser,string) ? \ (((CHECK_AT(parser->buffer,'\r',0) \ && CHECK_AT(parser->buffer,'\n',1)) ? /* CR LF -> LF */ \ (*((string).pointer++) = (yaml_char_t) '\n', \ parser->buffer.pointer += 2, \ parser->mark.index += 2, \ parser->mark.column = 0, \ parser->mark.line ++, \ parser->unread -= 2) : \ (CHECK_AT(parser->buffer,'\r',0) \ || CHECK_AT(parser->buffer,'\n',0)) ? /* CR|LF -> LF */ \ (*((string).pointer++) = (yaml_char_t) '\n', \ parser->buffer.pointer ++, \ parser->mark.index ++, \ parser->mark.column = 0, \ parser->mark.line ++, \ parser->unread --) : \ (CHECK_AT(parser->buffer,'\xC2',0) \ && CHECK_AT(parser->buffer,'\x85',1)) ? /* NEL -> LF */ \ (*((string).pointer++) = (yaml_char_t) '\n', \ parser->buffer.pointer += 2, \ parser->mark.index ++, \ parser->mark.column = 0, \ parser->mark.line ++, \ parser->unread --) : \ (CHECK_AT(parser->buffer,'\xE2',0) && \ CHECK_AT(parser->buffer,'\x80',1) && \ (CHECK_AT(parser->buffer,'\xA8',2) || \ CHECK_AT(parser->buffer,'\xA9',2))) ? /* LS|PS -> LS|PS */ \ (*((string).pointer++) = *(parser->buffer.pointer++), \ *((string).pointer++) = *(parser->buffer.pointer++), \ *((string).pointer++) = *(parser->buffer.pointer++), \ parser->mark.index ++, \ parser->mark.column = 0, \ parser->mark.line ++, \ parser->unread --) : 0), \ 1) : 0) /* * Public API declarations. */ YAML_DECLARE(int) yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token); /* * Error handling. */ static int yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context, yaml_mark_t context_mark, const char *problem); /* * High-level token API. */ YAML_DECLARE(int) yaml_parser_fetch_more_tokens(yaml_parser_t *parser); static int yaml_parser_fetch_next_token(yaml_parser_t *parser); /* * Potential simple keys. */ static int yaml_parser_stale_simple_keys(yaml_parser_t *parser); static int yaml_parser_save_simple_key(yaml_parser_t *parser); static int yaml_parser_remove_simple_key(yaml_parser_t *parser); static int yaml_parser_increase_flow_level(yaml_parser_t *parser); static int yaml_parser_decrease_flow_level(yaml_parser_t *parser); /* * Indentation treatment. */ static int yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column, ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark); static int yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column); /* * Token fetchers. */ static int yaml_parser_fetch_stream_start(yaml_parser_t *parser); static int yaml_parser_fetch_stream_end(yaml_parser_t *parser); static int yaml_parser_fetch_directive(yaml_parser_t *parser); static int yaml_parser_fetch_document_indicator(yaml_parser_t *parser, yaml_token_type_t type); static int yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser, yaml_token_type_t type); static int yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser, yaml_token_type_t type); static int yaml_parser_fetch_flow_entry(yaml_parser_t *parser); static int yaml_parser_fetch_block_entry(yaml_parser_t *parser); static int yaml_parser_fetch_key(yaml_parser_t *parser); static int yaml_parser_fetch_value(yaml_parser_t *parser); static int yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type); static int yaml_parser_fetch_tag(yaml_parser_t *parser); static int yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal); static int yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single); static int yaml_parser_fetch_plain_scalar(yaml_parser_t *parser); /* * Token scanners. */ static int yaml_parser_scan_to_next_token(yaml_parser_t *parser); static int yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token); static int yaml_parser_scan_directive_name(yaml_parser_t *parser, yaml_mark_t start_mark, yaml_char_t **name); static int yaml_parser_scan_version_directive_value(yaml_parser_t *parser, yaml_mark_t start_mark, int *major, int *minor); static int yaml_parser_scan_version_directive_number(yaml_parser_t *parser, yaml_mark_t start_mark, int *number); static int yaml_parser_scan_tag_directive_value(yaml_parser_t *parser, yaml_mark_t mark, yaml_char_t **handle, yaml_char_t **prefix); static int yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token, yaml_token_type_t type); static int yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token); static int yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive, yaml_mark_t start_mark, yaml_char_t **handle); static int yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive, yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri); static int yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive, yaml_mark_t start_mark, yaml_string_t *string); static int yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token, int literal); static int yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser, int *indent, yaml_string_t *breaks, yaml_mark_t start_mark, yaml_mark_t *end_mark); static int yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token, int single); static int yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token); /* * Get the next token. */ YAML_DECLARE(int) yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token) { assert(parser); /* Non-NULL parser object is expected. */ assert(token); /* Non-NULL token object is expected. */ /* Erase the token object. */ memset(token, 0, sizeof(yaml_token_t)); /* No tokens after STREAM-END or error. */ if (parser->stream_end_produced || parser->error) { return 1; } /* Ensure that the tokens queue contains enough tokens. */ if (!parser->token_available) { if (!yaml_parser_fetch_more_tokens(parser)) return 0; } /* Fetch the next token from the queue. */ *token = DEQUEUE(parser, parser->tokens); parser->token_available = 0; parser->tokens_parsed ++; if (token->type == YAML_STREAM_END_TOKEN) { parser->stream_end_produced = 1; } return 1; } /* * Set the scanner error and return 0. */ static int yaml_parser_set_scanner_error(yaml_parser_t *parser, const char *context, yaml_mark_t context_mark, const char *problem) { parser->error = YAML_SCANNER_ERROR; parser->context = context; parser->context_mark = context_mark; parser->problem = problem; parser->problem_mark = parser->mark; return 0; } /* * Ensure that the tokens queue contains at least one token which can be * returned to the Parser. */ YAML_DECLARE(int) yaml_parser_fetch_more_tokens(yaml_parser_t *parser) { int need_more_tokens; /* While we need more tokens to fetch, do it. */ while (1) { /* * Check if we really need to fetch more tokens. */ need_more_tokens = 0; if (parser->tokens.head == parser->tokens.tail) { /* Queue is empty. */ need_more_tokens = 1; } else { yaml_simple_key_t *simple_key; /* Check if any potential simple key may occupy the head position. */ if (!yaml_parser_stale_simple_keys(parser)) return 0; for (simple_key = parser->simple_keys.start; simple_key != parser->simple_keys.top; simple_key++) { if (simple_key->possible && simple_key->token_number == parser->tokens_parsed) { need_more_tokens = 1; break; } } } /* We are finished. */ if (!need_more_tokens) break; /* Fetch the next token. */ if (!yaml_parser_fetch_next_token(parser)) return 0; } parser->token_available = 1; return 1; } /* * The dispatcher for token fetchers. */ static int yaml_parser_fetch_next_token(yaml_parser_t *parser) { /* Ensure that the buffer is initialized. */ if (!CACHE(parser, 1)) return 0; /* Check if we just started scanning. Fetch STREAM-START then. */ if (!parser->stream_start_produced) return yaml_parser_fetch_stream_start(parser); /* Eat whitespaces and comments until we reach the next token. */ if (!yaml_parser_scan_to_next_token(parser)) return 0; /* Remove obsolete potential simple keys. */ if (!yaml_parser_stale_simple_keys(parser)) return 0; /* Check the indentation level against the current column. */ if (!yaml_parser_unroll_indent(parser, parser->mark.column)) return 0; /* * Ensure that the buffer contains at least 4 characters. 4 is the length * of the longest indicators ('--- ' and '... '). */ if (!CACHE(parser, 4)) return 0; /* Is it the end of the stream? */ if (IS_Z(parser->buffer)) return yaml_parser_fetch_stream_end(parser); /* Is it a directive? */ if (parser->mark.column == 0 && CHECK(parser->buffer, '%')) return yaml_parser_fetch_directive(parser); /* Is it the document start indicator? */ if (parser->mark.column == 0 && CHECK_AT(parser->buffer, '-', 0) && CHECK_AT(parser->buffer, '-', 1) && CHECK_AT(parser->buffer, '-', 2) && IS_BLANKZ_AT(parser->buffer, 3)) return yaml_parser_fetch_document_indicator(parser, YAML_DOCUMENT_START_TOKEN); /* Is it the document end indicator? */ if (parser->mark.column == 0 && CHECK_AT(parser->buffer, '.', 0) && CHECK_AT(parser->buffer, '.', 1) && CHECK_AT(parser->buffer, '.', 2) && IS_BLANKZ_AT(parser->buffer, 3)) return yaml_parser_fetch_document_indicator(parser, YAML_DOCUMENT_END_TOKEN); /* Is it the flow sequence start indicator? */ if (CHECK(parser->buffer, '[')) return yaml_parser_fetch_flow_collection_start(parser, YAML_FLOW_SEQUENCE_START_TOKEN); /* Is it the flow mapping start indicator? */ if (CHECK(parser->buffer, '{')) return yaml_parser_fetch_flow_collection_start(parser, YAML_FLOW_MAPPING_START_TOKEN); /* Is it the flow sequence end indicator? */ if (CHECK(parser->buffer, ']')) return yaml_parser_fetch_flow_collection_end(parser, YAML_FLOW_SEQUENCE_END_TOKEN); /* Is it the flow mapping end indicator? */ if (CHECK(parser->buffer, '}')) return yaml_parser_fetch_flow_collection_end(parser, YAML_FLOW_MAPPING_END_TOKEN); /* Is it the flow entry indicator? */ if (CHECK(parser->buffer, ',')) return yaml_parser_fetch_flow_entry(parser); /* Is it the block entry indicator? */ if (CHECK(parser->buffer, '-') && IS_BLANKZ_AT(parser->buffer, 1)) return yaml_parser_fetch_block_entry(parser); /* Is it the key indicator? */ if (CHECK(parser->buffer, '?') && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1))) return yaml_parser_fetch_key(parser); /* Is it the value indicator? */ if (CHECK(parser->buffer, ':') && (parser->flow_level || IS_BLANKZ_AT(parser->buffer, 1))) return yaml_parser_fetch_value(parser); /* Is it an alias? */ if (CHECK(parser->buffer, '*')) return yaml_parser_fetch_anchor(parser, YAML_ALIAS_TOKEN); /* Is it an anchor? */ if (CHECK(parser->buffer, '&')) return yaml_parser_fetch_anchor(parser, YAML_ANCHOR_TOKEN); /* Is it a tag? */ if (CHECK(parser->buffer, '!')) return yaml_parser_fetch_tag(parser); /* Is it a literal scalar? */ if (CHECK(parser->buffer, '|') && !parser->flow_level) return yaml_parser_fetch_block_scalar(parser, 1); /* Is it a folded scalar? */ if (CHECK(parser->buffer, '>') && !parser->flow_level) return yaml_parser_fetch_block_scalar(parser, 0); /* Is it a single-quoted scalar? */ if (CHECK(parser->buffer, '\'')) return yaml_parser_fetch_flow_scalar(parser, 1); /* Is it a double-quoted scalar? */ if (CHECK(parser->buffer, '"')) return yaml_parser_fetch_flow_scalar(parser, 0); /* * Is it a plain scalar? * * A plain scalar may start with any non-blank characters except * * '-', '?', ':', ',', '[', ']', '{', '}', * '#', '&', '*', '!', '|', '>', '\'', '\"', * '%', '@', '`'. * * In the block context (and, for the '-' indicator, in the flow context * too), it may also start with the characters * * '-', '?', ':' * * if it is followed by a non-space character. * * The last rule is more restrictive than the specification requires. */ if (!(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '-') || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':') || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{') || CHECK(parser->buffer, '}') || CHECK(parser->buffer, '#') || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '*') || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '|') || CHECK(parser->buffer, '>') || CHECK(parser->buffer, '\'') || CHECK(parser->buffer, '"') || CHECK(parser->buffer, '%') || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '`')) || (CHECK(parser->buffer, '-') && !IS_BLANK_AT(parser->buffer, 1)) || (!parser->flow_level && (CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':')) && !IS_BLANKZ_AT(parser->buffer, 1))) return yaml_parser_fetch_plain_scalar(parser); /* * If we don't determine the token type so far, it is an error. */ return yaml_parser_set_scanner_error(parser, "while scanning for the next token", parser->mark, "found character that cannot start any token"); } /* * Check the list of potential simple keys and remove the positions that * cannot contain simple keys anymore. */ static int yaml_parser_stale_simple_keys(yaml_parser_t *parser) { yaml_simple_key_t *simple_key; /* Check for a potential simple key for each flow level. */ for (simple_key = parser->simple_keys.start; simple_key != parser->simple_keys.top; simple_key ++) { /* * The specification requires that a simple key * * - is limited to a single line, * - is shorter than 1024 characters. */ if (simple_key->possible && (simple_key->mark.line < parser->mark.line || simple_key->mark.index+1024 < parser->mark.index)) { /* Check if the potential simple key to be removed is required. */ if (simple_key->required) { return yaml_parser_set_scanner_error(parser, "while scanning a simple key", simple_key->mark, "could not find expected ':'"); } simple_key->possible = 0; } } return 1; } /* * Check if a simple key may start at the current position and add it if * needed. */ static int yaml_parser_save_simple_key(yaml_parser_t *parser) { /* * A simple key is required at the current position if the scanner is in * the block context and the current column coincides with the indentation * level. */ int required = (!parser->flow_level && parser->indent == (ptrdiff_t)parser->mark.column); /* * If the current position may start a simple key, save it. */ if (parser->simple_key_allowed) { yaml_simple_key_t simple_key; simple_key.possible = 1; simple_key.required = required; simple_key.token_number = parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head); simple_key.mark = parser->mark; if (!yaml_parser_remove_simple_key(parser)) return 0; *(parser->simple_keys.top-1) = simple_key; } return 1; } /* * Remove a potential simple key at the current flow level. */ static int yaml_parser_remove_simple_key(yaml_parser_t *parser) { yaml_simple_key_t *simple_key = parser->simple_keys.top-1; if (simple_key->possible) { /* If the key is required, it is an error. */ if (simple_key->required) { return yaml_parser_set_scanner_error(parser, "while scanning a simple key", simple_key->mark, "could not find expected ':'"); } } /* Remove the key from the stack. */ simple_key->possible = 0; return 1; } /* * Increase the flow level and resize the simple key list if needed. */ static int yaml_parser_increase_flow_level(yaml_parser_t *parser) { yaml_simple_key_t empty_simple_key = { 0, 0, 0, { 0, 0, 0 } }; /* Reset the simple key on the next level. */ if (!PUSH(parser, parser->simple_keys, empty_simple_key)) return 0; /* Increase the flow level. */ if (parser->flow_level == INT_MAX) { parser->error = YAML_MEMORY_ERROR; return 0; } parser->flow_level++; return 1; } /* * Decrease the flow level. */ static int yaml_parser_decrease_flow_level(yaml_parser_t *parser) { yaml_simple_key_t dummy_key; /* Used to eliminate a compiler warning. */ if (parser->flow_level) { parser->flow_level --; dummy_key = POP(parser, parser->simple_keys); } return 1; } /* * Push the current indentation level to the stack and set the new level * the current column is greater than the indentation level. In this case, * append or insert the specified token into the token queue. * */ static int yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column, ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark) { yaml_token_t token; /* In the flow context, do nothing. */ if (parser->flow_level) return 1; if (parser->indent < column) { /* * Push the current indentation level to the stack and set the new * indentation level. */ if (!PUSH(parser, parser->indents, parser->indent)) return 0; if (column > INT_MAX) { parser->error = YAML_MEMORY_ERROR; return 0; } parser->indent = column; /* Create a token and insert it into the queue. */ TOKEN_INIT(token, type, mark, mark); if (number == -1) { if (!ENQUEUE(parser, parser->tokens, token)) return 0; } else { if (!QUEUE_INSERT(parser, parser->tokens, number - parser->tokens_parsed, token)) return 0; } } return 1; } /* * Pop indentation levels from the indents stack until the current level * becomes less or equal to the column. For each intendation level, append * the BLOCK-END token. */ static int yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column) { yaml_token_t token; /* In the flow context, do nothing. */ if (parser->flow_level) return 1; /* Loop through the intendation levels in the stack. */ while (parser->indent > column) { /* Create a token and append it to the queue. */ TOKEN_INIT(token, YAML_BLOCK_END_TOKEN, parser->mark, parser->mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; /* Pop the indentation level. */ parser->indent = POP(parser, parser->indents); } return 1; } /* * Initialize the scanner and produce the STREAM-START token. */ static int yaml_parser_fetch_stream_start(yaml_parser_t *parser) { yaml_simple_key_t simple_key = { 0, 0, 0, { 0, 0, 0 } }; yaml_token_t token; /* Set the initial indentation. */ parser->indent = -1; /* Initialize the simple key stack. */ if (!PUSH(parser, parser->simple_keys, simple_key)) return 0; /* A simple key is allowed at the beginning of the stream. */ parser->simple_key_allowed = 1; /* We have started. */ parser->stream_start_produced = 1; /* Create the STREAM-START token and append it to the queue. */ STREAM_START_TOKEN_INIT(token, parser->encoding, parser->mark, parser->mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the STREAM-END token and shut down the scanner. */ static int yaml_parser_fetch_stream_end(yaml_parser_t *parser) { yaml_token_t token; /* Force new line. */ if (parser->mark.column != 0) { parser->mark.column = 0; parser->mark.line ++; } /* Reset the indentation level. */ if (!yaml_parser_unroll_indent(parser, -1)) return 0; /* Reset simple keys. */ if (!yaml_parser_remove_simple_key(parser)) return 0; parser->simple_key_allowed = 0; /* Create the STREAM-END token and append it to the queue. */ STREAM_END_TOKEN_INIT(token, parser->mark, parser->mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token. */ static int yaml_parser_fetch_directive(yaml_parser_t *parser) { yaml_token_t token; /* Reset the indentation level. */ if (!yaml_parser_unroll_indent(parser, -1)) return 0; /* Reset simple keys. */ if (!yaml_parser_remove_simple_key(parser)) return 0; parser->simple_key_allowed = 0; /* Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. */ if (!yaml_parser_scan_directive(parser, &token)) return 0; /* Append the token to the queue. */ if (!ENQUEUE(parser, parser->tokens, token)) { yaml_token_delete(&token); return 0; } return 1; } /* * Produce the DOCUMENT-START or DOCUMENT-END token. */ static int yaml_parser_fetch_document_indicator(yaml_parser_t *parser, yaml_token_type_t type) { yaml_mark_t start_mark, end_mark; yaml_token_t token; /* Reset the indentation level. */ if (!yaml_parser_unroll_indent(parser, -1)) return 0; /* Reset simple keys. */ if (!yaml_parser_remove_simple_key(parser)) return 0; parser->simple_key_allowed = 0; /* Consume the token. */ start_mark = parser->mark; SKIP(parser); SKIP(parser); SKIP(parser); end_mark = parser->mark; /* Create the DOCUMENT-START or DOCUMENT-END token. */ TOKEN_INIT(token, type, start_mark, end_mark); /* Append the token to the queue. */ if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token. */ static int yaml_parser_fetch_flow_collection_start(yaml_parser_t *parser, yaml_token_type_t type) { yaml_mark_t start_mark, end_mark; yaml_token_t token; /* The indicators '[' and '{' may start a simple key. */ if (!yaml_parser_save_simple_key(parser)) return 0; /* Increase the flow level. */ if (!yaml_parser_increase_flow_level(parser)) return 0; /* A simple key may follow the indicators '[' and '{'. */ parser->simple_key_allowed = 1; /* Consume the token. */ start_mark = parser->mark; SKIP(parser); end_mark = parser->mark; /* Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. */ TOKEN_INIT(token, type, start_mark, end_mark); /* Append the token to the queue. */ if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token. */ static int yaml_parser_fetch_flow_collection_end(yaml_parser_t *parser, yaml_token_type_t type) { yaml_mark_t start_mark, end_mark; yaml_token_t token; /* Reset any potential simple key on the current flow level. */ if (!yaml_parser_remove_simple_key(parser)) return 0; /* Decrease the flow level. */ if (!yaml_parser_decrease_flow_level(parser)) return 0; /* No simple keys after the indicators ']' and '}'. */ parser->simple_key_allowed = 0; /* Consume the token. */ start_mark = parser->mark; SKIP(parser); end_mark = parser->mark; /* Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. */ TOKEN_INIT(token, type, start_mark, end_mark); /* Append the token to the queue. */ if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the FLOW-ENTRY token. */ static int yaml_parser_fetch_flow_entry(yaml_parser_t *parser) { yaml_mark_t start_mark, end_mark; yaml_token_t token; /* Reset any potential simple keys on the current flow level. */ if (!yaml_parser_remove_simple_key(parser)) return 0; /* Simple keys are allowed after ','. */ parser->simple_key_allowed = 1; /* Consume the token. */ start_mark = parser->mark; SKIP(parser); end_mark = parser->mark; /* Create the FLOW-ENTRY token and append it to the queue. */ TOKEN_INIT(token, YAML_FLOW_ENTRY_TOKEN, start_mark, end_mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the BLOCK-ENTRY token. */ static int yaml_parser_fetch_block_entry(yaml_parser_t *parser) { yaml_mark_t start_mark, end_mark; yaml_token_t token; /* Check if the scanner is in the block context. */ if (!parser->flow_level) { /* Check if we are allowed to start a new entry. */ if (!parser->simple_key_allowed) { return yaml_parser_set_scanner_error(parser, NULL, parser->mark, "block sequence entries are not allowed in this context"); } /* Add the BLOCK-SEQUENCE-START token if needed. */ if (!yaml_parser_roll_indent(parser, parser->mark.column, -1, YAML_BLOCK_SEQUENCE_START_TOKEN, parser->mark)) return 0; } else { /* * It is an error for the '-' indicator to occur in the flow context, * but we let the Parser detect and report about it because the Parser * is able to point to the context. */ } /* Reset any potential simple keys on the current flow level. */ if (!yaml_parser_remove_simple_key(parser)) return 0; /* Simple keys are allowed after '-'. */ parser->simple_key_allowed = 1; /* Consume the token. */ start_mark = parser->mark; SKIP(parser); end_mark = parser->mark; /* Create the BLOCK-ENTRY token and append it to the queue. */ TOKEN_INIT(token, YAML_BLOCK_ENTRY_TOKEN, start_mark, end_mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the KEY token. */ static int yaml_parser_fetch_key(yaml_parser_t *parser) { yaml_mark_t start_mark, end_mark; yaml_token_t token; /* In the block context, additional checks are required. */ if (!parser->flow_level) { /* Check if we are allowed to start a new key (not nessesary simple). */ if (!parser->simple_key_allowed) { return yaml_parser_set_scanner_error(parser, NULL, parser->mark, "mapping keys are not allowed in this context"); } /* Add the BLOCK-MAPPING-START token if needed. */ if (!yaml_parser_roll_indent(parser, parser->mark.column, -1, YAML_BLOCK_MAPPING_START_TOKEN, parser->mark)) return 0; } /* Reset any potential simple keys on the current flow level. */ if (!yaml_parser_remove_simple_key(parser)) return 0; /* Simple keys are allowed after '?' in the block context. */ parser->simple_key_allowed = (!parser->flow_level); /* Consume the token. */ start_mark = parser->mark; SKIP(parser); end_mark = parser->mark; /* Create the KEY token and append it to the queue. */ TOKEN_INIT(token, YAML_KEY_TOKEN, start_mark, end_mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the VALUE token. */ static int yaml_parser_fetch_value(yaml_parser_t *parser) { yaml_mark_t start_mark, end_mark; yaml_token_t token; yaml_simple_key_t *simple_key = parser->simple_keys.top-1; /* Have we found a simple key? */ if (simple_key->possible) { /* Create the KEY token and insert it into the queue. */ TOKEN_INIT(token, YAML_KEY_TOKEN, simple_key->mark, simple_key->mark); if (!QUEUE_INSERT(parser, parser->tokens, simple_key->token_number - parser->tokens_parsed, token)) return 0; /* In the block context, we may need to add the BLOCK-MAPPING-START token. */ if (!yaml_parser_roll_indent(parser, simple_key->mark.column, simple_key->token_number, YAML_BLOCK_MAPPING_START_TOKEN, simple_key->mark)) return 0; /* Remove the simple key. */ simple_key->possible = 0; /* A simple key cannot follow another simple key. */ parser->simple_key_allowed = 0; } else { /* The ':' indicator follows a complex key. */ /* In the block context, extra checks are required. */ if (!parser->flow_level) { /* Check if we are allowed to start a complex value. */ if (!parser->simple_key_allowed) { return yaml_parser_set_scanner_error(parser, NULL, parser->mark, "mapping values are not allowed in this context"); } /* Add the BLOCK-MAPPING-START token if needed. */ if (!yaml_parser_roll_indent(parser, parser->mark.column, -1, YAML_BLOCK_MAPPING_START_TOKEN, parser->mark)) return 0; } /* Simple keys after ':' are allowed in the block context. */ parser->simple_key_allowed = (!parser->flow_level); } /* Consume the token. */ start_mark = parser->mark; SKIP(parser); end_mark = parser->mark; /* Create the VALUE token and append it to the queue. */ TOKEN_INIT(token, YAML_VALUE_TOKEN, start_mark, end_mark); if (!ENQUEUE(parser, parser->tokens, token)) return 0; return 1; } /* * Produce the ALIAS or ANCHOR token. */ static int yaml_parser_fetch_anchor(yaml_parser_t *parser, yaml_token_type_t type) { yaml_token_t token; /* An anchor or an alias could be a simple key. */ if (!yaml_parser_save_simple_key(parser)) return 0; /* A simple key cannot follow an anchor or an alias. */ parser->simple_key_allowed = 0; /* Create the ALIAS or ANCHOR token and append it to the queue. */ if (!yaml_parser_scan_anchor(parser, &token, type)) return 0; if (!ENQUEUE(parser, parser->tokens, token)) { yaml_token_delete(&token); return 0; } return 1; } /* * Produce the TAG token. */ static int yaml_parser_fetch_tag(yaml_parser_t *parser) { yaml_token_t token; /* A tag could be a simple key. */ if (!yaml_parser_save_simple_key(parser)) return 0; /* A simple key cannot follow a tag. */ parser->simple_key_allowed = 0; /* Create the TAG token and append it to the queue. */ if (!yaml_parser_scan_tag(parser, &token)) return 0; if (!ENQUEUE(parser, parser->tokens, token)) { yaml_token_delete(&token); return 0; } return 1; } /* * Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens. */ static int yaml_parser_fetch_block_scalar(yaml_parser_t *parser, int literal) { yaml_token_t token; /* Remove any potential simple keys. */ if (!yaml_parser_remove_simple_key(parser)) return 0; /* A simple key may follow a block scalar. */ parser->simple_key_allowed = 1; /* Create the SCALAR token and append it to the queue. */ if (!yaml_parser_scan_block_scalar(parser, &token, literal)) return 0; if (!ENQUEUE(parser, parser->tokens, token)) { yaml_token_delete(&token); return 0; } return 1; } /* * Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens. */ static int yaml_parser_fetch_flow_scalar(yaml_parser_t *parser, int single) { yaml_token_t token; /* A plain scalar could be a simple key. */ if (!yaml_parser_save_simple_key(parser)) return 0; /* A simple key cannot follow a flow scalar. */ parser->simple_key_allowed = 0; /* Create the SCALAR token and append it to the queue. */ if (!yaml_parser_scan_flow_scalar(parser, &token, single)) return 0; if (!ENQUEUE(parser, parser->tokens, token)) { yaml_token_delete(&token); return 0; } return 1; } /* * Produce the SCALAR(...,plain) token. */ static int yaml_parser_fetch_plain_scalar(yaml_parser_t *parser) { yaml_token_t token; /* A plain scalar could be a simple key. */ if (!yaml_parser_save_simple_key(parser)) return 0; /* A simple key cannot follow a flow scalar. */ parser->simple_key_allowed = 0; /* Create the SCALAR token and append it to the queue. */ if (!yaml_parser_scan_plain_scalar(parser, &token)) return 0; if (!ENQUEUE(parser, parser->tokens, token)) { yaml_token_delete(&token); return 0; } return 1; } /* * Eat whitespaces and comments until the next token is found. */ static int yaml_parser_scan_to_next_token(yaml_parser_t *parser) { /* Until the next token is not found. */ while (1) { /* Allow the BOM mark to start a line. */ if (!CACHE(parser, 1)) return 0; if (parser->mark.column == 0 && IS_BOM(parser->buffer)) SKIP(parser); /* * Eat whitespaces. * * Tabs are allowed: * * - in the flow context; * - in the block context, but not at the beginning of the line or * after '-', '?', or ':' (complex value). */ if (!CACHE(parser, 1)) return 0; while (CHECK(parser->buffer,' ') || ((parser->flow_level || !parser->simple_key_allowed) && CHECK(parser->buffer, '\t'))) { SKIP(parser); if (!CACHE(parser, 1)) return 0; } /* Eat a comment until a line break. */ if (CHECK(parser->buffer, '#')) { while (!IS_BREAKZ(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) return 0; } } /* If it is a line break, eat it. */ if (IS_BREAK(parser->buffer)) { if (!CACHE(parser, 2)) return 0; SKIP_LINE(parser); /* In the block context, a new line may start a simple key. */ if (!parser->flow_level) { parser->simple_key_allowed = 1; } } else { /* We have found a token. */ break; } } return 1; } /* * Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token. * * Scope: * %YAML 1.1 # a comment \n * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * %TAG !yaml! tag:yaml.org,2002: \n * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ */ int yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token) { yaml_mark_t start_mark, end_mark; yaml_char_t *name = NULL; int major, minor; yaml_char_t *handle = NULL, *prefix = NULL; /* Eat '%'. */ start_mark = parser->mark; SKIP(parser); /* Scan the directive name. */ if (!yaml_parser_scan_directive_name(parser, start_mark, &name)) goto error; /* Is it a YAML directive? */ if (strcmp((char *)name, "YAML") == 0) { /* Scan the VERSION directive value. */ if (!yaml_parser_scan_version_directive_value(parser, start_mark, &major, &minor)) goto error; end_mark = parser->mark; /* Create a VERSION-DIRECTIVE token. */ VERSION_DIRECTIVE_TOKEN_INIT(*token, major, minor, start_mark, end_mark); } /* Is it a TAG directive? */ else if (strcmp((char *)name, "TAG") == 0) { /* Scan the TAG directive value. */ if (!yaml_parser_scan_tag_directive_value(parser, start_mark, &handle, &prefix)) goto error; end_mark = parser->mark; /* Create a TAG-DIRECTIVE token. */ TAG_DIRECTIVE_TOKEN_INIT(*token, handle, prefix, start_mark, end_mark); } /* Unknown directive. */ else { yaml_parser_set_scanner_error(parser, "while scanning a directive", start_mark, "found uknown directive name"); goto error; } /* Eat the rest of the line including any comments. */ if (!CACHE(parser, 1)) goto error; while (IS_BLANK(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) goto error; } if (CHECK(parser->buffer, '#')) { while (!IS_BREAKZ(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) goto error; } } /* Check if we are at the end of the line. */ if (!IS_BREAKZ(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a directive", start_mark, "did not find expected comment or line break"); goto error; } /* Eat a line break. */ if (IS_BREAK(parser->buffer)) { if (!CACHE(parser, 2)) goto error; SKIP_LINE(parser); } yaml_free(name); return 1; error: yaml_free(prefix); yaml_free(handle); yaml_free(name); return 0; } /* * Scan the directive name. * * Scope: * %YAML 1.1 # a comment \n * ^^^^ * %TAG !yaml! tag:yaml.org,2002: \n * ^^^ */ static int yaml_parser_scan_directive_name(yaml_parser_t *parser, yaml_mark_t start_mark, yaml_char_t **name) { yaml_string_t string = NULL_STRING; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; /* Consume the directive name. */ if (!CACHE(parser, 1)) goto error; while (IS_ALPHA(parser->buffer)) { if (!READ(parser, string)) goto error; if (!CACHE(parser, 1)) goto error; } /* Check if the name is empty. */ if (string.start == string.pointer) { yaml_parser_set_scanner_error(parser, "while scanning a directive", start_mark, "could not find expected directive name"); goto error; } /* Check for an blank character after the name. */ if (!IS_BLANKZ(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a directive", start_mark, "found unexpected non-alphabetical character"); goto error; } *name = string.start; return 1; error: STRING_DEL(parser, string); return 0; } /* * Scan the value of VERSION-DIRECTIVE. * * Scope: * %YAML 1.1 # a comment \n * ^^^^^^ */ static int yaml_parser_scan_version_directive_value(yaml_parser_t *parser, yaml_mark_t start_mark, int *major, int *minor) { /* Eat whitespaces. */ if (!CACHE(parser, 1)) return 0; while (IS_BLANK(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) return 0; } /* Consume the major version number. */ if (!yaml_parser_scan_version_directive_number(parser, start_mark, major)) return 0; /* Eat '.'. */ if (!CHECK(parser->buffer, '.')) { return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", start_mark, "did not find expected digit or '.' character"); } SKIP(parser); /* Consume the minor version number. */ if (!yaml_parser_scan_version_directive_number(parser, start_mark, minor)) return 0; return 1; } #define MAX_NUMBER_LENGTH 9 /* * Scan the version number of VERSION-DIRECTIVE. * * Scope: * %YAML 1.1 # a comment \n * ^ * %YAML 1.1 # a comment \n * ^ */ static int yaml_parser_scan_version_directive_number(yaml_parser_t *parser, yaml_mark_t start_mark, int *number) { int value = 0; size_t length = 0; /* Repeat while the next character is digit. */ if (!CACHE(parser, 1)) return 0; while (IS_DIGIT(parser->buffer)) { /* Check if the number is too long. */ if (++length > MAX_NUMBER_LENGTH) { return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", start_mark, "found extremely long version number"); } value = value*10 + AS_DIGIT(parser->buffer); SKIP(parser); if (!CACHE(parser, 1)) return 0; } /* Check if the number was present. */ if (!length) { return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", start_mark, "did not find expected version number"); } *number = value; return 1; } /* * Scan the value of a TAG-DIRECTIVE token. * * Scope: * %TAG !yaml! tag:yaml.org,2002: \n * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ */ static int yaml_parser_scan_tag_directive_value(yaml_parser_t *parser, yaml_mark_t start_mark, yaml_char_t **handle, yaml_char_t **prefix) { yaml_char_t *handle_value = NULL; yaml_char_t *prefix_value = NULL; /* Eat whitespaces. */ if (!CACHE(parser, 1)) goto error; while (IS_BLANK(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) goto error; } /* Scan a handle. */ if (!yaml_parser_scan_tag_handle(parser, 1, start_mark, &handle_value)) goto error; /* Expect a whitespace. */ if (!CACHE(parser, 1)) goto error; if (!IS_BLANK(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive", start_mark, "did not find expected whitespace"); goto error; } /* Eat whitespaces. */ while (IS_BLANK(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) goto error; } /* Scan a prefix. */ if (!yaml_parser_scan_tag_uri(parser, 1, NULL, start_mark, &prefix_value)) goto error; /* Expect a whitespace or line break. */ if (!CACHE(parser, 1)) goto error; if (!IS_BLANKZ(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive", start_mark, "did not find expected whitespace or line break"); goto error; } *handle = handle_value; *prefix = prefix_value; return 1; error: yaml_free(handle_value); yaml_free(prefix_value); return 0; } static int yaml_parser_scan_anchor(yaml_parser_t *parser, yaml_token_t *token, yaml_token_type_t type) { int length = 0; yaml_mark_t start_mark, end_mark; yaml_string_t string = NULL_STRING; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; /* Eat the indicator character. */ start_mark = parser->mark; SKIP(parser); /* Consume the value. */ if (!CACHE(parser, 1)) goto error; while (IS_ALPHA(parser->buffer)) { if (!READ(parser, string)) goto error; if (!CACHE(parser, 1)) goto error; length ++; } end_mark = parser->mark; /* * Check if length of the anchor is greater than 0 and it is followed by * a whitespace character or one of the indicators: * * '?', ':', ',', ']', '}', '%', '@', '`'. */ if (!length || !(IS_BLANKZ(parser->buffer) || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':') || CHECK(parser->buffer, ',') || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '}') || CHECK(parser->buffer, '%') || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '`'))) { yaml_parser_set_scanner_error(parser, type == YAML_ANCHOR_TOKEN ? "while scanning an anchor" : "while scanning an alias", start_mark, "did not find expected alphabetic or numeric character"); goto error; } /* Create a token. */ if (type == YAML_ANCHOR_TOKEN) { ANCHOR_TOKEN_INIT(*token, string.start, start_mark, end_mark); } else { ALIAS_TOKEN_INIT(*token, string.start, start_mark, end_mark); } return 1; error: STRING_DEL(parser, string); return 0; } /* * Scan a TAG token. */ static int yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token) { yaml_char_t *handle = NULL; yaml_char_t *suffix = NULL; yaml_mark_t start_mark, end_mark; start_mark = parser->mark; /* Check if the tag is in the canonical form. */ if (!CACHE(parser, 2)) goto error; if (CHECK_AT(parser->buffer, '<', 1)) { /* Set the handle to '' */ handle = yaml_malloc(1); if (!handle) goto error; handle[0] = '\0'; /* Eat '!<' */ SKIP(parser); SKIP(parser); /* Consume the tag value. */ if (!yaml_parser_scan_tag_uri(parser, 0, NULL, start_mark, &suffix)) goto error; /* Check for '>' and eat it. */ if (!CHECK(parser->buffer, '>')) { yaml_parser_set_scanner_error(parser, "while scanning a tag", start_mark, "did not find the expected '>'"); goto error; } SKIP(parser); } else { /* The tag has either the '!suffix' or the '!handle!suffix' form. */ /* First, try to scan a handle. */ if (!yaml_parser_scan_tag_handle(parser, 0, start_mark, &handle)) goto error; /* Check if it is, indeed, handle. */ if (handle[0] == '!' && handle[1] != '\0' && handle[strlen((char *)handle)-1] == '!') { /* Scan the suffix now. */ if (!yaml_parser_scan_tag_uri(parser, 0, NULL, start_mark, &suffix)) goto error; } else { /* It wasn't a handle after all. Scan the rest of the tag. */ if (!yaml_parser_scan_tag_uri(parser, 0, handle, start_mark, &suffix)) goto error; /* Set the handle to '!'. */ yaml_free(handle); handle = yaml_malloc(2); if (!handle) goto error; handle[0] = '!'; handle[1] = '\0'; /* * A special case: the '!' tag. Set the handle to '' and the * suffix to '!'. */ if (suffix[0] == '\0') { yaml_char_t *tmp = handle; handle = suffix; suffix = tmp; } } } /* Check the character which ends the tag. */ if (!CACHE(parser, 1)) goto error; if (!IS_BLANKZ(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a tag", start_mark, "did not find expected whitespace or line break"); goto error; } end_mark = parser->mark; /* Create a token. */ TAG_TOKEN_INIT(*token, handle, suffix, start_mark, end_mark); return 1; error: yaml_free(handle); yaml_free(suffix); return 0; } /* * Scan a tag handle. */ static int yaml_parser_scan_tag_handle(yaml_parser_t *parser, int directive, yaml_mark_t start_mark, yaml_char_t **handle) { yaml_string_t string = NULL_STRING; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; /* Check the initial '!' character. */ if (!CACHE(parser, 1)) goto error; if (!CHECK(parser->buffer, '!')) { yaml_parser_set_scanner_error(parser, directive ? "while scanning a tag directive" : "while scanning a tag", start_mark, "did not find expected '!'"); goto error; } /* Copy the '!' character. */ if (!READ(parser, string)) goto error; /* Copy all subsequent alphabetical and numerical characters. */ if (!CACHE(parser, 1)) goto error; while (IS_ALPHA(parser->buffer)) { if (!READ(parser, string)) goto error; if (!CACHE(parser, 1)) goto error; } /* Check if the trailing character is '!' and copy it. */ if (CHECK(parser->buffer, '!')) { if (!READ(parser, string)) goto error; } else { /* * It's either the '!' tag or not really a tag handle. If it's a %TAG * directive, it's an error. If it's a tag token, it must be a part of * URI. */ if (directive && !(string.start[0] == '!' && string.start[1] == '\0')) { yaml_parser_set_scanner_error(parser, "while parsing a tag directive", start_mark, "did not find expected '!'"); goto error; } } *handle = string.start; return 1; error: STRING_DEL(parser, string); return 0; } /* * Scan a tag. */ static int yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive, yaml_char_t *head, yaml_mark_t start_mark, yaml_char_t **uri) { size_t length = head ? strlen((char *)head) : 0; yaml_string_t string = NULL_STRING; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; /* Resize the string to include the head. */ while ((size_t)(string.end - string.start) <= length) { if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) { parser->error = YAML_MEMORY_ERROR; goto error; } } /* * Copy the head if needed. * * Note that we don't copy the leading '!' character. */ if (length > 1) { memcpy(string.start, head+1, length-1); string.pointer += length-1; } /* Scan the tag. */ if (!CACHE(parser, 1)) goto error; /* * The set of characters that may appear in URI is as follows: * * '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&', * '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']', * '%'. */ while (IS_ALPHA(parser->buffer) || CHECK(parser->buffer, ';') || CHECK(parser->buffer, '/') || CHECK(parser->buffer, '?') || CHECK(parser->buffer, ':') || CHECK(parser->buffer, '@') || CHECK(parser->buffer, '&') || CHECK(parser->buffer, '=') || CHECK(parser->buffer, '+') || CHECK(parser->buffer, '$') || CHECK(parser->buffer, ',') || CHECK(parser->buffer, '.') || CHECK(parser->buffer, '!') || CHECK(parser->buffer, '~') || CHECK(parser->buffer, '*') || CHECK(parser->buffer, '\'') || CHECK(parser->buffer, '(') || CHECK(parser->buffer, ')') || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '%')) { /* Check if it is a URI-escape sequence. */ if (CHECK(parser->buffer, '%')) { if (!STRING_EXTEND(parser, string)) goto error; if (!yaml_parser_scan_uri_escapes(parser, directive, start_mark, &string)) goto error; } else { if (!READ(parser, string)) goto error; } length ++; if (!CACHE(parser, 1)) goto error; } /* Check if the tag is non-empty. */ if (!length) { if (!STRING_EXTEND(parser, string)) goto error; yaml_parser_set_scanner_error(parser, directive ? "while parsing a %TAG directive" : "while parsing a tag", start_mark, "did not find expected tag URI"); goto error; } *uri = string.start; return 1; error: STRING_DEL(parser, string); return 0; } /* * Decode an URI-escape sequence corresponding to a single UTF-8 character. */ static int yaml_parser_scan_uri_escapes(yaml_parser_t *parser, int directive, yaml_mark_t start_mark, yaml_string_t *string) { int width = 0; /* Decode the required number of characters. */ do { unsigned char octet = 0; /* Check for a URI-escaped octet. */ if (!CACHE(parser, 3)) return 0; if (!(CHECK(parser->buffer, '%') && IS_HEX_AT(parser->buffer, 1) && IS_HEX_AT(parser->buffer, 2))) { return yaml_parser_set_scanner_error(parser, directive ? "while parsing a %TAG directive" : "while parsing a tag", start_mark, "did not find URI escaped octet"); } /* Get the octet. */ octet = (AS_HEX_AT(parser->buffer, 1) << 4) + AS_HEX_AT(parser->buffer, 2); /* If it is the leading octet, determine the length of the UTF-8 sequence. */ if (!width) { width = (octet & 0x80) == 0x00 ? 1 : (octet & 0xE0) == 0xC0 ? 2 : (octet & 0xF0) == 0xE0 ? 3 : (octet & 0xF8) == 0xF0 ? 4 : 0; if (!width) { return yaml_parser_set_scanner_error(parser, directive ? "while parsing a %TAG directive" : "while parsing a tag", start_mark, "found an incorrect leading UTF-8 octet"); } } else { /* Check if the trailing octet is correct. */ if ((octet & 0xC0) != 0x80) { return yaml_parser_set_scanner_error(parser, directive ? "while parsing a %TAG directive" : "while parsing a tag", start_mark, "found an incorrect trailing UTF-8 octet"); } } /* Copy the octet and move the pointers. */ *(string->pointer++) = octet; SKIP(parser); SKIP(parser); SKIP(parser); } while (--width); return 1; } /* * Scan a block scalar. */ static int yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token, int literal) { yaml_mark_t start_mark; yaml_mark_t end_mark; yaml_string_t string = NULL_STRING; yaml_string_t leading_break = NULL_STRING; yaml_string_t trailing_breaks = NULL_STRING; int chomping = 0; int increment = 0; int indent = 0; int leading_blank = 0; int trailing_blank = 0; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error; /* Eat the indicator '|' or '>'. */ start_mark = parser->mark; SKIP(parser); /* Scan the additional block scalar indicators. */ if (!CACHE(parser, 1)) goto error; /* Check for a chomping indicator. */ if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-')) { /* Set the chomping method and eat the indicator. */ chomping = CHECK(parser->buffer, '+') ? +1 : -1; SKIP(parser); /* Check for an indentation indicator. */ if (!CACHE(parser, 1)) goto error; if (IS_DIGIT(parser->buffer)) { /* Check that the intendation is greater than 0. */ if (CHECK(parser->buffer, '0')) { yaml_parser_set_scanner_error(parser, "while scanning a block scalar", start_mark, "found an intendation indicator equal to 0"); goto error; } /* Get the intendation level and eat the indicator. */ increment = AS_DIGIT(parser->buffer); SKIP(parser); } } /* Do the same as above, but in the opposite order. */ else if (IS_DIGIT(parser->buffer)) { if (CHECK(parser->buffer, '0')) { yaml_parser_set_scanner_error(parser, "while scanning a block scalar", start_mark, "found an intendation indicator equal to 0"); goto error; } increment = AS_DIGIT(parser->buffer); SKIP(parser); if (!CACHE(parser, 1)) goto error; if (CHECK(parser->buffer, '+') || CHECK(parser->buffer, '-')) { chomping = CHECK(parser->buffer, '+') ? +1 : -1; SKIP(parser); } } /* Eat whitespaces and comments to the end of the line. */ if (!CACHE(parser, 1)) goto error; while (IS_BLANK(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) goto error; } if (CHECK(parser->buffer, '#')) { while (!IS_BREAKZ(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) goto error; } } /* Check if we are at the end of the line. */ if (!IS_BREAKZ(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a block scalar", start_mark, "did not find expected comment or line break"); goto error; } /* Eat a line break. */ if (IS_BREAK(parser->buffer)) { if (!CACHE(parser, 2)) goto error; SKIP_LINE(parser); } end_mark = parser->mark; /* Set the intendation level if it was specified. */ if (increment) { indent = parser->indent >= 0 ? parser->indent+increment : increment; } /* Scan the leading line breaks and determine the indentation level if needed. */ if (!yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark)) goto error; /* Scan the block scalar content. */ if (!CACHE(parser, 1)) goto error; while ((int)parser->mark.column == indent && !IS_Z(parser->buffer)) { /* * We are at the beginning of a non-empty line. */ /* Is it a trailing whitespace? */ trailing_blank = IS_BLANK(parser->buffer); /* Check if we need to fold the leading line break. */ if (!literal && (*leading_break.start == '\n') && !leading_blank && !trailing_blank) { /* Do we need to join the lines by space? */ if (*trailing_breaks.start == '\0') { if (!STRING_EXTEND(parser, string)) goto error; *(string.pointer ++) = ' '; } CLEAR(parser, leading_break); } else { if (!JOIN(parser, string, leading_break)) goto error; CLEAR(parser, leading_break); } /* Append the remaining line breaks. */ if (!JOIN(parser, string, trailing_breaks)) goto error; CLEAR(parser, trailing_breaks); /* Is it a leading whitespace? */ leading_blank = IS_BLANK(parser->buffer); /* Consume the current line. */ while (!IS_BREAKZ(parser->buffer)) { if (!READ(parser, string)) goto error; if (!CACHE(parser, 1)) goto error; } /* Consume the line break. */ if (!CACHE(parser, 2)) goto error; if (!READ_LINE(parser, leading_break)) goto error; /* Eat the following intendation spaces and line breaks. */ if (!yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark)) goto error; } /* Chomp the tail. */ if (chomping != -1) { if (!JOIN(parser, string, leading_break)) goto error; } if (chomping == 1) { if (!JOIN(parser, string, trailing_breaks)) goto error; } /* Create a token. */ SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start, literal ? YAML_LITERAL_SCALAR_STYLE : YAML_FOLDED_SCALAR_STYLE, start_mark, end_mark); STRING_DEL(parser, leading_break); STRING_DEL(parser, trailing_breaks); return 1; error: STRING_DEL(parser, string); STRING_DEL(parser, leading_break); STRING_DEL(parser, trailing_breaks); return 0; } /* * Scan intendation spaces and line breaks for a block scalar. Determine the * intendation level if needed. */ static int yaml_parser_scan_block_scalar_breaks(yaml_parser_t *parser, int *indent, yaml_string_t *breaks, yaml_mark_t start_mark, yaml_mark_t *end_mark) { int max_indent = 0; *end_mark = parser->mark; /* Eat the intendation spaces and line breaks. */ while (1) { /* Eat the intendation spaces. */ if (!CACHE(parser, 1)) return 0; while ((!*indent || (int)parser->mark.column < *indent) && IS_SPACE(parser->buffer)) { SKIP(parser); if (!CACHE(parser, 1)) return 0; } if ((int)parser->mark.column > max_indent) max_indent = (int)parser->mark.column; /* Check for a tab character messing the intendation. */ if ((!*indent || (int)parser->mark.column < *indent) && IS_TAB(parser->buffer)) { return yaml_parser_set_scanner_error(parser, "while scanning a block scalar", start_mark, "found a tab character where an intendation space is expected"); } /* Have we found a non-empty line? */ if (!IS_BREAK(parser->buffer)) break; /* Consume the line break. */ if (!CACHE(parser, 2)) return 0; if (!READ_LINE(parser, *breaks)) return 0; *end_mark = parser->mark; } /* Determine the indentation level if needed. */ if (!*indent) { *indent = max_indent; if (*indent < parser->indent + 1) *indent = parser->indent + 1; if (*indent < 1) *indent = 1; } return 1; } /* * Scan a quoted scalar. */ static int yaml_parser_scan_flow_scalar(yaml_parser_t *parser, yaml_token_t *token, int single) { yaml_mark_t start_mark; yaml_mark_t end_mark; yaml_string_t string = NULL_STRING; yaml_string_t leading_break = NULL_STRING; yaml_string_t trailing_breaks = NULL_STRING; yaml_string_t whitespaces = NULL_STRING; int leading_blanks; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error; /* Eat the left quote. */ start_mark = parser->mark; SKIP(parser); /* Consume the content of the quoted scalar. */ while (1) { /* Check that there are no document indicators at the beginning of the line. */ if (!CACHE(parser, 4)) goto error; if (parser->mark.column == 0 && ((CHECK_AT(parser->buffer, '-', 0) && CHECK_AT(parser->buffer, '-', 1) && CHECK_AT(parser->buffer, '-', 2)) || (CHECK_AT(parser->buffer, '.', 0) && CHECK_AT(parser->buffer, '.', 1) && CHECK_AT(parser->buffer, '.', 2))) && IS_BLANKZ_AT(parser->buffer, 3)) { yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar", start_mark, "found unexpected document indicator"); goto error; } /* Check for EOF. */ if (IS_Z(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar", start_mark, "found unexpected end of stream"); goto error; } /* Consume non-blank characters. */ if (!CACHE(parser, 2)) goto error; leading_blanks = 0; while (!IS_BLANKZ(parser->buffer)) { /* Check for an escaped single quote. */ if (single && CHECK_AT(parser->buffer, '\'', 0) && CHECK_AT(parser->buffer, '\'', 1)) { if (!STRING_EXTEND(parser, string)) goto error; *(string.pointer++) = '\''; SKIP(parser); SKIP(parser); } /* Check for the right quote. */ else if (CHECK(parser->buffer, single ? '\'' : '"')) { break; } /* Check for an escaped line break. */ else if (!single && CHECK(parser->buffer, '\\') && IS_BREAK_AT(parser->buffer, 1)) { if (!CACHE(parser, 3)) goto error; SKIP(parser); SKIP_LINE(parser); leading_blanks = 1; break; } /* Check for an escape sequence. */ else if (!single && CHECK(parser->buffer, '\\')) { size_t code_length = 0; if (!STRING_EXTEND(parser, string)) goto error; /* Check the escape character. */ switch (parser->buffer.pointer[1]) { case '0': *(string.pointer++) = '\0'; break; case 'a': *(string.pointer++) = '\x07'; break; case 'b': *(string.pointer++) = '\x08'; break; case 't': case '\t': *(string.pointer++) = '\x09'; break; case 'n': *(string.pointer++) = '\x0A'; break; case 'v': *(string.pointer++) = '\x0B'; break; case 'f': *(string.pointer++) = '\x0C'; break; case 'r': *(string.pointer++) = '\x0D'; break; case 'e': *(string.pointer++) = '\x1B'; break; case ' ': *(string.pointer++) = '\x20'; break; case '"': *(string.pointer++) = '"'; break; case '\'': *(string.pointer++) = '\''; break; case '\\': *(string.pointer++) = '\\'; break; case 'N': /* NEL (#x85) */ *(string.pointer++) = '\xC2'; *(string.pointer++) = '\x85'; break; case '_': /* #xA0 */ *(string.pointer++) = '\xC2'; *(string.pointer++) = '\xA0'; break; case 'L': /* LS (#x2028) */ *(string.pointer++) = '\xE2'; *(string.pointer++) = '\x80'; *(string.pointer++) = '\xA8'; break; case 'P': /* PS (#x2029) */ *(string.pointer++) = '\xE2'; *(string.pointer++) = '\x80'; *(string.pointer++) = '\xA9'; break; case 'x': code_length = 2; break; case 'u': code_length = 4; break; case 'U': code_length = 8; break; default: yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", start_mark, "found unknown escape character"); goto error; } SKIP(parser); SKIP(parser); /* Consume an arbitrary escape code. */ if (code_length) { unsigned int value = 0; size_t k; /* Scan the character value. */ if (!CACHE(parser, code_length)) goto error; for (k = 0; k < code_length; k ++) { if (!IS_HEX_AT(parser->buffer, k)) { yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", start_mark, "did not find expected hexdecimal number"); goto error; } value = (value << 4) + AS_HEX_AT(parser->buffer, k); } /* Check the value and write the character. */ if ((value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF) { yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", start_mark, "found invalid Unicode character escape code"); goto error; } if (value <= 0x7F) { *(string.pointer++) = value; } else if (value <= 0x7FF) { *(string.pointer++) = 0xC0 + (value >> 6); *(string.pointer++) = 0x80 + (value & 0x3F); } else if (value <= 0xFFFF) { *(string.pointer++) = 0xE0 + (value >> 12); *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F); *(string.pointer++) = 0x80 + (value & 0x3F); } else { *(string.pointer++) = 0xF0 + (value >> 18); *(string.pointer++) = 0x80 + ((value >> 12) & 0x3F); *(string.pointer++) = 0x80 + ((value >> 6) & 0x3F); *(string.pointer++) = 0x80 + (value & 0x3F); } /* Advance the pointer. */ for (k = 0; k < code_length; k ++) { SKIP(parser); } } } else { /* It is a non-escaped non-blank character. */ if (!READ(parser, string)) goto error; } if (!CACHE(parser, 2)) goto error; } /* Check if we are at the end of the scalar. */ if (CHECK(parser->buffer, single ? '\'' : '"')) break; /* Consume blank characters. */ if (!CACHE(parser, 1)) goto error; while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer)) { if (IS_BLANK(parser->buffer)) { /* Consume a space or a tab character. */ if (!leading_blanks) { if (!READ(parser, whitespaces)) goto error; } else { SKIP(parser); } } else { if (!CACHE(parser, 2)) goto error; /* Check if it is a first line break. */ if (!leading_blanks) { CLEAR(parser, whitespaces); if (!READ_LINE(parser, leading_break)) goto error; leading_blanks = 1; } else { if (!READ_LINE(parser, trailing_breaks)) goto error; } } if (!CACHE(parser, 1)) goto error; } /* Join the whitespaces or fold line breaks. */ if (leading_blanks) { /* Do we need to fold line breaks? */ if (leading_break.start[0] == '\n') { if (trailing_breaks.start[0] == '\0') { if (!STRING_EXTEND(parser, string)) goto error; *(string.pointer++) = ' '; } else { if (!JOIN(parser, string, trailing_breaks)) goto error; CLEAR(parser, trailing_breaks); } CLEAR(parser, leading_break); } else { if (!JOIN(parser, string, leading_break)) goto error; if (!JOIN(parser, string, trailing_breaks)) goto error; CLEAR(parser, leading_break); CLEAR(parser, trailing_breaks); } } else { if (!JOIN(parser, string, whitespaces)) goto error; CLEAR(parser, whitespaces); } } /* Eat the right quote. */ SKIP(parser); end_mark = parser->mark; /* Create a token. */ SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start, single ? YAML_SINGLE_QUOTED_SCALAR_STYLE : YAML_DOUBLE_QUOTED_SCALAR_STYLE, start_mark, end_mark); STRING_DEL(parser, leading_break); STRING_DEL(parser, trailing_breaks); STRING_DEL(parser, whitespaces); return 1; error: STRING_DEL(parser, string); STRING_DEL(parser, leading_break); STRING_DEL(parser, trailing_breaks); STRING_DEL(parser, whitespaces); return 0; } /* * Scan a plain scalar. */ static int yaml_parser_scan_plain_scalar(yaml_parser_t *parser, yaml_token_t *token) { yaml_mark_t start_mark; yaml_mark_t end_mark; yaml_string_t string = NULL_STRING; yaml_string_t leading_break = NULL_STRING; yaml_string_t trailing_breaks = NULL_STRING; yaml_string_t whitespaces = NULL_STRING; int leading_blanks = 0; int indent = parser->indent+1; if (!STRING_INIT(parser, string, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, leading_break, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, trailing_breaks, INITIAL_STRING_SIZE)) goto error; if (!STRING_INIT(parser, whitespaces, INITIAL_STRING_SIZE)) goto error; start_mark = end_mark = parser->mark; /* Consume the content of the plain scalar. */ while (1) { /* Check for a document indicator. */ if (!CACHE(parser, 4)) goto error; if (parser->mark.column == 0 && ((CHECK_AT(parser->buffer, '-', 0) && CHECK_AT(parser->buffer, '-', 1) && CHECK_AT(parser->buffer, '-', 2)) || (CHECK_AT(parser->buffer, '.', 0) && CHECK_AT(parser->buffer, '.', 1) && CHECK_AT(parser->buffer, '.', 2))) && IS_BLANKZ_AT(parser->buffer, 3)) break; /* Check for a comment. */ if (CHECK(parser->buffer, '#')) break; /* Consume non-blank characters. */ while (!IS_BLANKZ(parser->buffer)) { /* Check for 'x:x' in the flow context. TODO: Fix the test "spec-08-13". */ if (parser->flow_level && CHECK(parser->buffer, ':') && !IS_BLANKZ_AT(parser->buffer, 1)) { yaml_parser_set_scanner_error(parser, "while scanning a plain scalar", start_mark, "found unexpected ':'"); goto error; } /* Check for indicators that may end a plain scalar. */ if ((CHECK(parser->buffer, ':') && IS_BLANKZ_AT(parser->buffer, 1)) || (parser->flow_level && (CHECK(parser->buffer, ',') || CHECK(parser->buffer, ':') || CHECK(parser->buffer, '?') || CHECK(parser->buffer, '[') || CHECK(parser->buffer, ']') || CHECK(parser->buffer, '{') || CHECK(parser->buffer, '}')))) break; /* Check if we need to join whitespaces and breaks. */ if (leading_blanks || whitespaces.start != whitespaces.pointer) { if (leading_blanks) { /* Do we need to fold line breaks? */ if (leading_break.start[0] == '\n') { if (trailing_breaks.start[0] == '\0') { if (!STRING_EXTEND(parser, string)) goto error; *(string.pointer++) = ' '; } else { if (!JOIN(parser, string, trailing_breaks)) goto error; CLEAR(parser, trailing_breaks); } CLEAR(parser, leading_break); } else { if (!JOIN(parser, string, leading_break)) goto error; if (!JOIN(parser, string, trailing_breaks)) goto error; CLEAR(parser, leading_break); CLEAR(parser, trailing_breaks); } leading_blanks = 0; } else { if (!JOIN(parser, string, whitespaces)) goto error; CLEAR(parser, whitespaces); } } /* Copy the character. */ if (!READ(parser, string)) goto error; end_mark = parser->mark; if (!CACHE(parser, 2)) goto error; } /* Is it the end? */ if (!(IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer))) break; /* Consume blank characters. */ if (!CACHE(parser, 1)) goto error; while (IS_BLANK(parser->buffer) || IS_BREAK(parser->buffer)) { if (IS_BLANK(parser->buffer)) { /* Check for tab character that abuse intendation. */ if (leading_blanks && (int)parser->mark.column < indent && IS_TAB(parser->buffer)) { yaml_parser_set_scanner_error(parser, "while scanning a plain scalar", start_mark, "found a tab character that violate intendation"); goto error; } /* Consume a space or a tab character. */ if (!leading_blanks) { if (!READ(parser, whitespaces)) goto error; } else { SKIP(parser); } } else { if (!CACHE(parser, 2)) goto error; /* Check if it is a first line break. */ if (!leading_blanks) { CLEAR(parser, whitespaces); if (!READ_LINE(parser, leading_break)) goto error; leading_blanks = 1; } else { if (!READ_LINE(parser, trailing_breaks)) goto error; } } if (!CACHE(parser, 1)) goto error; } /* Check intendation level. */ if (!parser->flow_level && (int)parser->mark.column < indent) break; } /* Create a token. */ SCALAR_TOKEN_INIT(*token, string.start, string.pointer-string.start, YAML_PLAIN_SCALAR_STYLE, start_mark, end_mark); /* Note that we change the 'simple_key_allowed' flag. */ if (leading_blanks) { parser->simple_key_allowed = 1; } STRING_DEL(parser, leading_break); STRING_DEL(parser, trailing_breaks); STRING_DEL(parser, whitespaces); return 1; error: STRING_DEL(parser, string); STRING_DEL(parser, leading_break); STRING_DEL(parser, trailing_breaks); STRING_DEL(parser, whitespaces); return 0; } yaml-0.8.20/libyaml/writer.c0000644000000000000000000000771513001717724014056 0ustar0000000000000000 #include "yaml_private.h" /* * Declarations. */ static int yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem); YAML_DECLARE(int) yaml_emitter_flush(yaml_emitter_t *emitter); /* * Set the writer error and return 0. */ static int yaml_emitter_set_writer_error(yaml_emitter_t *emitter, const char *problem) { emitter->error = YAML_WRITER_ERROR; emitter->problem = problem; return 0; } /* * Flush the output buffer. */ YAML_DECLARE(int) yaml_emitter_flush(yaml_emitter_t *emitter) { int low, high; assert(emitter); /* Non-NULL emitter object is expected. */ assert(emitter->write_handler); /* Write handler must be set. */ assert(emitter->encoding); /* Output encoding must be set. */ emitter->buffer.last = emitter->buffer.pointer; emitter->buffer.pointer = emitter->buffer.start; /* Check if the buffer is empty. */ if (emitter->buffer.start == emitter->buffer.last) { return 1; } /* If the output encoding is UTF-8, we don't need to recode the buffer. */ if (emitter->encoding == YAML_UTF8_ENCODING) { if (emitter->write_handler(emitter->write_handler_data, emitter->buffer.start, emitter->buffer.last - emitter->buffer.start)) { emitter->buffer.last = emitter->buffer.start; emitter->buffer.pointer = emitter->buffer.start; return 1; } else { return yaml_emitter_set_writer_error(emitter, "write error"); } } /* Recode the buffer into the raw buffer. */ low = (emitter->encoding == YAML_UTF16LE_ENCODING ? 0 : 1); high = (emitter->encoding == YAML_UTF16LE_ENCODING ? 1 : 0); while (emitter->buffer.pointer != emitter->buffer.last) { unsigned char octet; unsigned int width; unsigned int value; size_t k; /* * See the "reader.c" code for more details on UTF-8 encoding. Note * that we assume that the buffer contains a valid UTF-8 sequence. */ /* Read the next UTF-8 character. */ octet = emitter->buffer.pointer[0]; width = (octet & 0x80) == 0x00 ? 1 : (octet & 0xE0) == 0xC0 ? 2 : (octet & 0xF0) == 0xE0 ? 3 : (octet & 0xF8) == 0xF0 ? 4 : 0; value = (octet & 0x80) == 0x00 ? octet & 0x7F : (octet & 0xE0) == 0xC0 ? octet & 0x1F : (octet & 0xF0) == 0xE0 ? octet & 0x0F : (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0; for (k = 1; k < width; k ++) { octet = emitter->buffer.pointer[k]; value = (value << 6) + (octet & 0x3F); } emitter->buffer.pointer += width; /* Write the character. */ if (value < 0x10000) { emitter->raw_buffer.last[high] = value >> 8; emitter->raw_buffer.last[low] = value & 0xFF; emitter->raw_buffer.last += 2; } else { /* Write the character using a surrogate pair (check "reader.c"). */ value -= 0x10000; emitter->raw_buffer.last[high] = 0xD8 + (value >> 18); emitter->raw_buffer.last[low] = (value >> 10) & 0xFF; emitter->raw_buffer.last[high+2] = 0xDC + ((value >> 8) & 0xFF); emitter->raw_buffer.last[low+2] = value & 0xFF; emitter->raw_buffer.last += 4; } } /* Write the raw buffer. */ if (emitter->write_handler(emitter->write_handler_data, emitter->raw_buffer.start, emitter->raw_buffer.last - emitter->raw_buffer.start)) { emitter->buffer.last = emitter->buffer.start; emitter->buffer.pointer = emitter->buffer.start; emitter->raw_buffer.last = emitter->raw_buffer.start; emitter->raw_buffer.pointer = emitter->raw_buffer.start; return 1; } else { return yaml_emitter_set_writer_error(emitter, "write error"); } } yaml-0.8.20/libyaml/yaml.h0000644000000000000000000015202713001717724013506 0ustar0000000000000000/** * @file yaml.h * @brief Public interface for libyaml. * * Include the header file with the code: * @code * #include * @endcode */ #ifndef YAML_H #define YAML_H #ifdef __cplusplus extern "C" { #endif #include #include #include /** * @defgroup export Export Definitions * @{ */ /** The public API declaration. */ #if defined(__MINGW32__) # define YAML_DECLARE(type) type #elif defined(_WIN32) # if defined(YAML_DECLARE_STATIC) # define YAML_DECLARE(type) type # elif defined(YAML_DECLARE_EXPORT) # define YAML_DECLARE(type) __declspec(dllexport) type # else # define YAML_DECLARE(type) __declspec(dllimport) type # endif #else # define YAML_DECLARE(type) type #endif /** @} */ /** * @defgroup version Version Information * @{ */ /** * Get the library version as a string. * * @returns The function returns the pointer to a static string of the form * @c "X.Y.Z", where @c X is the major version number, @c Y is a minor version * number, and @c Z is the patch version number. */ YAML_DECLARE(const char *) yaml_get_version_string(void); /** * Get the library version numbers. * * @param[out] major Major version number. * @param[out] minor Minor version number. * @param[out] patch Patch version number. */ YAML_DECLARE(void) yaml_get_version(int *major, int *minor, int *patch); /** @} */ /** * @defgroup basic Basic Types * @{ */ /** The character type (UTF-8 octet). */ typedef unsigned char yaml_char_t; /** The version directive data. */ typedef struct yaml_version_directive_s { /** The major version number. */ int major; /** The minor version number. */ int minor; } yaml_version_directive_t; /** The tag directive data. */ typedef struct yaml_tag_directive_s { /** The tag handle. */ yaml_char_t *handle; /** The tag prefix. */ yaml_char_t *prefix; } yaml_tag_directive_t; /** The stream encoding. */ typedef enum yaml_encoding_e { /** Let the parser choose the encoding. */ YAML_ANY_ENCODING, /** The default UTF-8 encoding. */ YAML_UTF8_ENCODING, /** The UTF-16-LE encoding with BOM. */ YAML_UTF16LE_ENCODING, /** The UTF-16-BE encoding with BOM. */ YAML_UTF16BE_ENCODING } yaml_encoding_t; /** Line break types. */ typedef enum yaml_break_e { /** Let the parser choose the break type. */ YAML_ANY_BREAK, /** Use CR for line breaks (Mac style). */ YAML_CR_BREAK, /** Use LN for line breaks (Unix style). */ YAML_LN_BREAK, /** Use CR LN for line breaks (DOS style). */ YAML_CRLN_BREAK } yaml_break_t; /** Many bad things could happen with the parser and emitter. */ typedef enum yaml_error_type_e { /** No error is produced. */ YAML_NO_ERROR, /** Cannot allocate or reallocate a block of memory. */ YAML_MEMORY_ERROR, /** Cannot read or decode the input stream. */ YAML_READER_ERROR, /** Cannot scan the input stream. */ YAML_SCANNER_ERROR, /** Cannot parse the input stream. */ YAML_PARSER_ERROR, /** Cannot compose a YAML document. */ YAML_COMPOSER_ERROR, /** Cannot write to the output stream. */ YAML_WRITER_ERROR, /** Cannot emit a YAML stream. */ YAML_EMITTER_ERROR } yaml_error_type_t; /** The pointer position. */ typedef struct yaml_mark_s { /** The position index. */ size_t index; /** The position line. */ size_t line; /** The position column. */ size_t column; } yaml_mark_t; /** @} */ /** * @defgroup styles Node Styles * @{ */ /** Scalar styles. */ typedef enum yaml_scalar_style_e { /** Let the emitter choose the style. */ YAML_ANY_SCALAR_STYLE, /** The plain scalar style. */ YAML_PLAIN_SCALAR_STYLE, /** The single-quoted scalar style. */ YAML_SINGLE_QUOTED_SCALAR_STYLE, /** The double-quoted scalar style. */ YAML_DOUBLE_QUOTED_SCALAR_STYLE, /** The literal scalar style. */ YAML_LITERAL_SCALAR_STYLE, /** The folded scalar style. */ YAML_FOLDED_SCALAR_STYLE } yaml_scalar_style_t; /** Sequence styles. */ typedef enum yaml_sequence_style_e { /** Let the emitter choose the style. */ YAML_ANY_SEQUENCE_STYLE, /** The block sequence style. */ YAML_BLOCK_SEQUENCE_STYLE, /** The flow sequence style. */ YAML_FLOW_SEQUENCE_STYLE } yaml_sequence_style_t; /** Mapping styles. */ typedef enum yaml_mapping_style_e { /** Let the emitter choose the style. */ YAML_ANY_MAPPING_STYLE, /** The block mapping style. */ YAML_BLOCK_MAPPING_STYLE, /** The flow mapping style. */ YAML_FLOW_MAPPING_STYLE /* YAML_FLOW_SET_MAPPING_STYLE */ } yaml_mapping_style_t; /** @} */ /** * @defgroup tokens Tokens * @{ */ /** Token types. */ typedef enum yaml_token_type_e { /** An empty token. */ YAML_NO_TOKEN, /** A STREAM-START token. */ YAML_STREAM_START_TOKEN, /** A STREAM-END token. */ YAML_STREAM_END_TOKEN, /** A VERSION-DIRECTIVE token. */ YAML_VERSION_DIRECTIVE_TOKEN, /** A TAG-DIRECTIVE token. */ YAML_TAG_DIRECTIVE_TOKEN, /** A DOCUMENT-START token. */ YAML_DOCUMENT_START_TOKEN, /** A DOCUMENT-END token. */ YAML_DOCUMENT_END_TOKEN, /** A BLOCK-SEQUENCE-START token. */ YAML_BLOCK_SEQUENCE_START_TOKEN, /** A BLOCK-SEQUENCE-END token. */ YAML_BLOCK_MAPPING_START_TOKEN, /** A BLOCK-END token. */ YAML_BLOCK_END_TOKEN, /** A FLOW-SEQUENCE-START token. */ YAML_FLOW_SEQUENCE_START_TOKEN, /** A FLOW-SEQUENCE-END token. */ YAML_FLOW_SEQUENCE_END_TOKEN, /** A FLOW-MAPPING-START token. */ YAML_FLOW_MAPPING_START_TOKEN, /** A FLOW-MAPPING-END token. */ YAML_FLOW_MAPPING_END_TOKEN, /** A BLOCK-ENTRY token. */ YAML_BLOCK_ENTRY_TOKEN, /** A FLOW-ENTRY token. */ YAML_FLOW_ENTRY_TOKEN, /** A KEY token. */ YAML_KEY_TOKEN, /** A VALUE token. */ YAML_VALUE_TOKEN, /** An ALIAS token. */ YAML_ALIAS_TOKEN, /** An ANCHOR token. */ YAML_ANCHOR_TOKEN, /** A TAG token. */ YAML_TAG_TOKEN, /** A SCALAR token. */ YAML_SCALAR_TOKEN } yaml_token_type_t; /** The token structure. */ typedef struct yaml_token_s { /** The token type. */ yaml_token_type_t type; /** The token data. */ union { /** The stream start (for @c YAML_STREAM_START_TOKEN). */ struct { /** The stream encoding. */ yaml_encoding_t encoding; } stream_start; /** The alias (for @c YAML_ALIAS_TOKEN). */ struct { /** The alias value. */ yaml_char_t *value; } alias; /** The anchor (for @c YAML_ANCHOR_TOKEN). */ struct { /** The anchor value. */ yaml_char_t *value; } anchor; /** The tag (for @c YAML_TAG_TOKEN). */ struct { /** The tag handle. */ yaml_char_t *handle; /** The tag suffix. */ yaml_char_t *suffix; } tag; /** The scalar value (for @c YAML_SCALAR_TOKEN). */ struct { /** The scalar value. */ yaml_char_t *value; /** The length of the scalar value. */ size_t length; /** The scalar style. */ yaml_scalar_style_t style; } scalar; /** The version directive (for @c YAML_VERSION_DIRECTIVE_TOKEN). */ struct { /** The major version number. */ int major; /** The minor version number. */ int minor; } version_directive; /** The tag directive (for @c YAML_TAG_DIRECTIVE_TOKEN). */ struct { /** The tag handle. */ yaml_char_t *handle; /** The tag prefix. */ yaml_char_t *prefix; } tag_directive; } data; /** The beginning of the token. */ yaml_mark_t start_mark; /** The end of the token. */ yaml_mark_t end_mark; } yaml_token_t; /** * Free any memory allocated for a token object. * * @param[in,out] token A token object. */ YAML_DECLARE(void) yaml_token_delete(yaml_token_t *token); /** @} */ /** * @defgroup events Events * @{ */ /** Event types. */ typedef enum yaml_event_type_e { /** An empty event. */ YAML_NO_EVENT, /** A STREAM-START event. */ YAML_STREAM_START_EVENT, /** A STREAM-END event. */ YAML_STREAM_END_EVENT, /** A DOCUMENT-START event. */ YAML_DOCUMENT_START_EVENT, /** A DOCUMENT-END event. */ YAML_DOCUMENT_END_EVENT, /** An ALIAS event. */ YAML_ALIAS_EVENT, /** A SCALAR event. */ YAML_SCALAR_EVENT, /** A SEQUENCE-START event. */ YAML_SEQUENCE_START_EVENT, /** A SEQUENCE-END event. */ YAML_SEQUENCE_END_EVENT, /** A MAPPING-START event. */ YAML_MAPPING_START_EVENT, /** A MAPPING-END event. */ YAML_MAPPING_END_EVENT } yaml_event_type_t; /** The event structure. */ typedef struct yaml_event_s { /** The event type. */ yaml_event_type_t type; /** The event data. */ union { /** The stream parameters (for @c YAML_STREAM_START_EVENT). */ struct { /** The document encoding. */ yaml_encoding_t encoding; } stream_start; /** The document parameters (for @c YAML_DOCUMENT_START_EVENT). */ struct { /** The version directive. */ yaml_version_directive_t *version_directive; /** The list of tag directives. */ struct { /** The beginning of the tag directives list. */ yaml_tag_directive_t *start; /** The end of the tag directives list. */ yaml_tag_directive_t *end; } tag_directives; /** Is the document indicator implicit? */ int implicit; } document_start; /** The document end parameters (for @c YAML_DOCUMENT_END_EVENT). */ struct { /** Is the document end indicator implicit? */ int implicit; } document_end; /** The alias parameters (for @c YAML_ALIAS_EVENT). */ struct { /** The anchor. */ yaml_char_t *anchor; } alias; /** The scalar parameters (for @c YAML_SCALAR_EVENT). */ struct { /** The anchor. */ yaml_char_t *anchor; /** The tag. */ yaml_char_t *tag; /** The scalar value. */ yaml_char_t *value; /** The length of the scalar value. */ size_t length; /** Is the tag optional for the plain style? */ int plain_implicit; /** Is the tag optional for any non-plain style? */ int quoted_implicit; /** The scalar style. */ yaml_scalar_style_t style; } scalar; /** The sequence parameters (for @c YAML_SEQUENCE_START_EVENT). */ struct { /** The anchor. */ yaml_char_t *anchor; /** The tag. */ yaml_char_t *tag; /** Is the tag optional? */ int implicit; /** The sequence style. */ yaml_sequence_style_t style; } sequence_start; /** The mapping parameters (for @c YAML_MAPPING_START_EVENT). */ struct { /** The anchor. */ yaml_char_t *anchor; /** The tag. */ yaml_char_t *tag; /** Is the tag optional? */ int implicit; /** The mapping style. */ yaml_mapping_style_t style; } mapping_start; } data; /** The beginning of the event. */ yaml_mark_t start_mark; /** The end of the event. */ yaml_mark_t end_mark; } yaml_event_t; /** * Create the STREAM-START event. * * @param[out] event An empty event object. * @param[in] encoding The stream encoding. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_stream_start_event_initialize(yaml_event_t *event, yaml_encoding_t encoding); /** * Create the STREAM-END event. * * @param[out] event An empty event object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_stream_end_event_initialize(yaml_event_t *event); /** * Create the DOCUMENT-START event. * * The @a implicit argument is considered as a stylistic parameter and may be * ignored by the emitter. * * @param[out] event An empty event object. * @param[in] version_directive The %YAML directive value or * @c NULL. * @param[in] tag_directives_start The beginning of the %TAG * directives list. * @param[in] tag_directives_end The end of the %TAG directives * list. * @param[in] implicit If the document start indicator is * implicit. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_document_start_event_initialize(yaml_event_t *event, yaml_version_directive_t *version_directive, yaml_tag_directive_t *tag_directives_start, yaml_tag_directive_t *tag_directives_end, int implicit); /** * Create the DOCUMENT-END event. * * The @a implicit argument is considered as a stylistic parameter and may be * ignored by the emitter. * * @param[out] event An empty event object. * @param[in] implicit If the document end indicator is implicit. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_document_end_event_initialize(yaml_event_t *event, int implicit); /** * Create an ALIAS event. * * @param[out] event An empty event object. * @param[in] anchor The anchor value. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor); /** * Create a SCALAR event. * * The @a style argument may be ignored by the emitter. * * Either the @a tag attribute or one of the @a plain_implicit and * @a quoted_implicit flags must be set. * * @param[out] event An empty event object. * @param[in] anchor The scalar anchor or @c NULL. * @param[in] tag The scalar tag or @c NULL. * @param[in] value The scalar value. * @param[in] length The length of the scalar value. * @param[in] plain_implicit If the tag may be omitted for the plain * style. * @param[in] quoted_implicit If the tag may be omitted for any * non-plain style. * @param[in] style The scalar style. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_scalar_event_initialize(yaml_event_t *event, yaml_char_t *anchor, yaml_char_t *tag, yaml_char_t *value, int length, int plain_implicit, int quoted_implicit, yaml_scalar_style_t style); /** * Create a SEQUENCE-START event. * * The @a style argument may be ignored by the emitter. * * Either the @a tag attribute or the @a implicit flag must be set. * * @param[out] event An empty event object. * @param[in] anchor The sequence anchor or @c NULL. * @param[in] tag The sequence tag or @c NULL. * @param[in] implicit If the tag may be omitted. * @param[in] style The sequence style. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_sequence_start_event_initialize(yaml_event_t *event, yaml_char_t *anchor, yaml_char_t *tag, int implicit, yaml_sequence_style_t style); /** * Create a SEQUENCE-END event. * * @param[out] event An empty event object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_sequence_end_event_initialize(yaml_event_t *event); /** * Create a MAPPING-START event. * * The @a style argument may be ignored by the emitter. * * Either the @a tag attribute or the @a implicit flag must be set. * * @param[out] event An empty event object. * @param[in] anchor The mapping anchor or @c NULL. * @param[in] tag The mapping tag or @c NULL. * @param[in] implicit If the tag may be omitted. * @param[in] style The mapping style. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_mapping_start_event_initialize(yaml_event_t *event, yaml_char_t *anchor, yaml_char_t *tag, int implicit, yaml_mapping_style_t style); /** * Create a MAPPING-END event. * * @param[out] event An empty event object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_mapping_end_event_initialize(yaml_event_t *event); /** * Free any memory allocated for an event object. * * @param[in,out] event An event object. */ YAML_DECLARE(void) yaml_event_delete(yaml_event_t *event); /** @} */ /** * @defgroup nodes Nodes * @{ */ /** The tag @c !!null with the only possible value: @c null. */ #define YAML_NULL_TAG "tag:yaml.org,2002:null" /** The tag @c !!bool with the values: @c true and @c falce. */ #define YAML_BOOL_TAG "tag:yaml.org,2002:bool" /** The tag @c !!str for string values. */ #define YAML_STR_TAG "tag:yaml.org,2002:str" /** The tag @c !!int for integer values. */ #define YAML_INT_TAG "tag:yaml.org,2002:int" /** The tag @c !!float for float values. */ #define YAML_FLOAT_TAG "tag:yaml.org,2002:float" /** The tag @c !!timestamp for date and time values. */ #define YAML_TIMESTAMP_TAG "tag:yaml.org,2002:timestamp" /** The tag @c !!seq is used to denote sequences. */ #define YAML_SEQ_TAG "tag:yaml.org,2002:seq" /** The tag @c !!map is used to denote mapping. */ #define YAML_MAP_TAG "tag:yaml.org,2002:map" /** The default scalar tag is @c !!str. */ #define YAML_DEFAULT_SCALAR_TAG YAML_STR_TAG /** The default sequence tag is @c !!seq. */ #define YAML_DEFAULT_SEQUENCE_TAG YAML_SEQ_TAG /** The default mapping tag is @c !!map. */ #define YAML_DEFAULT_MAPPING_TAG YAML_MAP_TAG /** Node types. */ typedef enum yaml_node_type_e { /** An empty node. */ YAML_NO_NODE, /** A scalar node. */ YAML_SCALAR_NODE, /** A sequence node. */ YAML_SEQUENCE_NODE, /** A mapping node. */ YAML_MAPPING_NODE } yaml_node_type_t; /** The forward definition of a document node structure. */ typedef struct yaml_node_s yaml_node_t; /** An element of a sequence node. */ typedef int yaml_node_item_t; /** An element of a mapping node. */ typedef struct yaml_node_pair_s { /** The key of the element. */ int key; /** The value of the element. */ int value; } yaml_node_pair_t; /** The node structure. */ struct yaml_node_s { /** The node type. */ yaml_node_type_t type; /** The node tag. */ yaml_char_t *tag; /** The node data. */ union { /** The scalar parameters (for @c YAML_SCALAR_NODE). */ struct { /** The scalar value. */ yaml_char_t *value; /** The length of the scalar value. */ size_t length; /** The scalar style. */ yaml_scalar_style_t style; } scalar; /** The sequence parameters (for @c YAML_SEQUENCE_NODE). */ struct { /** The stack of sequence items. */ struct { /** The beginning of the stack. */ yaml_node_item_t *start; /** The end of the stack. */ yaml_node_item_t *end; /** The top of the stack. */ yaml_node_item_t *top; } items; /** The sequence style. */ yaml_sequence_style_t style; } sequence; /** The mapping parameters (for @c YAML_MAPPING_NODE). */ struct { /** The stack of mapping pairs (key, value). */ struct { /** The beginning of the stack. */ yaml_node_pair_t *start; /** The end of the stack. */ yaml_node_pair_t *end; /** The top of the stack. */ yaml_node_pair_t *top; } pairs; /** The mapping style. */ yaml_mapping_style_t style; } mapping; } data; /** The beginning of the node. */ yaml_mark_t start_mark; /** The end of the node. */ yaml_mark_t end_mark; }; /** The document structure. */ typedef struct yaml_document_s { /** The document nodes. */ struct { /** The beginning of the stack. */ yaml_node_t *start; /** The end of the stack. */ yaml_node_t *end; /** The top of the stack. */ yaml_node_t *top; } nodes; /** The version directive. */ yaml_version_directive_t *version_directive; /** The list of tag directives. */ struct { /** The beginning of the tag directives list. */ yaml_tag_directive_t *start; /** The end of the tag directives list. */ yaml_tag_directive_t *end; } tag_directives; /** Is the document start indicator implicit? */ int start_implicit; /** Is the document end indicator implicit? */ int end_implicit; /** The beginning of the document. */ yaml_mark_t start_mark; /** The end of the document. */ yaml_mark_t end_mark; } yaml_document_t; /** * Create a YAML document. * * @param[out] document An empty document object. * @param[in] version_directive The %YAML directive value or * @c NULL. * @param[in] tag_directives_start The beginning of the %TAG * directives list. * @param[in] tag_directives_end The end of the %TAG directives * list. * @param[in] start_implicit If the document start indicator is * implicit. * @param[in] end_implicit If the document end indicator is * implicit. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_document_initialize(yaml_document_t *document, yaml_version_directive_t *version_directive, yaml_tag_directive_t *tag_directives_start, yaml_tag_directive_t *tag_directives_end, int start_implicit, int end_implicit); /** * Delete a YAML document and all its nodes. * * @param[in,out] document A document object. */ YAML_DECLARE(void) yaml_document_delete(yaml_document_t *document); /** * Get a node of a YAML document. * * The pointer returned by this function is valid until any of the functions * modifying the documents are called. * * @param[in] document A document object. * @param[in] index The node id. * * @returns the node objct or @c NULL if @c node_id is out of range. */ YAML_DECLARE(yaml_node_t *) yaml_document_get_node(yaml_document_t *document, int index); /** * Get the root of a YAML document node. * * The root object is the first object added to the document. * * The pointer returned by this function is valid until any of the functions * modifying the documents are called. * * An empty document produced by the parser signifies the end of a YAML * stream. * * @param[in] document A document object. * * @returns the node object or @c NULL if the document is empty. */ YAML_DECLARE(yaml_node_t *) yaml_document_get_root_node(yaml_document_t *document); /** * Create a SCALAR node and attach it to the document. * * The @a style argument may be ignored by the emitter. * * @param[in,out] document A document object. * @param[in] tag The scalar tag. * @param[in] value The scalar value. * @param[in] length The length of the scalar value. * @param[in] style The scalar style. * * @returns the node id or @c 0 on error. */ YAML_DECLARE(int) yaml_document_add_scalar(yaml_document_t *document, yaml_char_t *tag, yaml_char_t *value, int length, yaml_scalar_style_t style); /** * Create a SEQUENCE node and attach it to the document. * * The @a style argument may be ignored by the emitter. * * @param[in,out] document A document object. * @param[in] tag The sequence tag. * @param[in] style The sequence style. * * @returns the node id or @c 0 on error. */ YAML_DECLARE(int) yaml_document_add_sequence(yaml_document_t *document, yaml_char_t *tag, yaml_sequence_style_t style); /** * Create a MAPPING node and attach it to the document. * * The @a style argument may be ignored by the emitter. * * @param[in,out] document A document object. * @param[in] tag The sequence tag. * @param[in] style The sequence style. * * @returns the node id or @c 0 on error. */ YAML_DECLARE(int) yaml_document_add_mapping(yaml_document_t *document, yaml_char_t *tag, yaml_mapping_style_t style); /** * Add an item to a SEQUENCE node. * * @param[in,out] document A document object. * @param[in] sequence The sequence node id. * @param[in] item The item node id. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_document_append_sequence_item(yaml_document_t *document, int sequence, int item); /** * Add a pair of a key and a value to a MAPPING node. * * @param[in,out] document A document object. * @param[in] mapping The mapping node id. * @param[in] key The key node id. * @param[in] value The value node id. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_document_append_mapping_pair(yaml_document_t *document, int mapping, int key, int value); /** @} */ /** * @defgroup parser Parser Definitions * @{ */ /** * The prototype of a read handler. * * The read handler is called when the parser needs to read more bytes from the * source. The handler should write not more than @a size bytes to the @a * buffer. The number of written bytes should be set to the @a length variable. * * @param[in,out] data A pointer to an application data specified by * yaml_parser_set_input(). * @param[out] buffer The buffer to write the data from the source. * @param[in] size The size of the buffer. * @param[out] size_read The actual number of bytes read from the source. * * @returns On success, the handler should return @c 1. If the handler failed, * the returned value should be @c 0. On EOF, the handler should set the * @a size_read to @c 0 and return @c 1. */ typedef int yaml_read_handler_t(void *data, unsigned char *buffer, size_t size, size_t *size_read); /** * This structure holds information about a potential simple key. */ typedef struct yaml_simple_key_s { /** Is a simple key possible? */ int possible; /** Is a simple key required? */ int required; /** The number of the token. */ size_t token_number; /** The position mark. */ yaml_mark_t mark; } yaml_simple_key_t; /** * The states of the parser. */ typedef enum yaml_parser_state_e { /** Expect STREAM-START. */ YAML_PARSE_STREAM_START_STATE, /** Expect the beginning of an implicit document. */ YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE, /** Expect DOCUMENT-START. */ YAML_PARSE_DOCUMENT_START_STATE, /** Expect the content of a document. */ YAML_PARSE_DOCUMENT_CONTENT_STATE, /** Expect DOCUMENT-END. */ YAML_PARSE_DOCUMENT_END_STATE, /** Expect a block node. */ YAML_PARSE_BLOCK_NODE_STATE, /** Expect a block node or indentless sequence. */ YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE, /** Expect a flow node. */ YAML_PARSE_FLOW_NODE_STATE, /** Expect the first entry of a block sequence. */ YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE, /** Expect an entry of a block sequence. */ YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE, /** Expect an entry of an indentless sequence. */ YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE, /** Expect the first key of a block mapping. */ YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE, /** Expect a block mapping key. */ YAML_PARSE_BLOCK_MAPPING_KEY_STATE, /** Expect a block mapping value. */ YAML_PARSE_BLOCK_MAPPING_VALUE_STATE, /** Expect the first entry of a flow sequence. */ YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE, /** Expect an entry of a flow sequence. */ YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE, /** Expect a key of an ordered mapping. */ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE, /** Expect a value of an ordered mapping. */ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE, /** Expect the and of an ordered mapping entry. */ YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE, /** Expect the first key of a flow mapping. */ YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE, /** Expect a key of a flow mapping. */ YAML_PARSE_FLOW_MAPPING_KEY_STATE, /** Expect a value of a flow mapping. */ YAML_PARSE_FLOW_MAPPING_VALUE_STATE, /** Expect an empty value of a flow mapping. */ YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE, /** Expect nothing. */ YAML_PARSE_END_STATE } yaml_parser_state_t; /** * This structure holds aliases data. */ typedef struct yaml_alias_data_s { /** The anchor. */ yaml_char_t *anchor; /** The node id. */ int index; /** The anchor mark. */ yaml_mark_t mark; } yaml_alias_data_t; /** * The parser structure. * * All members are internal. Manage the structure using the @c yaml_parser_ * family of functions. */ typedef struct yaml_parser_s { /** * @name Error handling * @{ */ /** Error type. */ yaml_error_type_t error; /** Error description. */ const char *problem; /** The byte about which the problem occured. */ size_t problem_offset; /** The problematic value (@c -1 is none). */ int problem_value; /** The problem position. */ yaml_mark_t problem_mark; /** The error context. */ const char *context; /** The context position. */ yaml_mark_t context_mark; /** * @} */ /** * @name Reader stuff * @{ */ /** Read handler. */ yaml_read_handler_t *read_handler; /** A pointer for passing to the read handler. */ void *read_handler_data; /** Standard (string or file) input data. */ union { /** String input data. */ struct { /** The string start pointer. */ const unsigned char *start; /** The string end pointer. */ const unsigned char *end; /** The string current position. */ const unsigned char *current; } string; /** File input data. */ FILE *file; } input; /** EOF flag */ int eof; /** The working buffer. */ struct { /** The beginning of the buffer. */ yaml_char_t *start; /** The end of the buffer. */ yaml_char_t *end; /** The current position of the buffer. */ yaml_char_t *pointer; /** The last filled position of the buffer. */ yaml_char_t *last; } buffer; /* The number of unread characters in the buffer. */ size_t unread; /** The raw buffer. */ struct { /** The beginning of the buffer. */ unsigned char *start; /** The end of the buffer. */ unsigned char *end; /** The current position of the buffer. */ unsigned char *pointer; /** The last filled position of the buffer. */ unsigned char *last; } raw_buffer; /** The input encoding. */ yaml_encoding_t encoding; /** The offset of the current position (in bytes). */ size_t offset; /** The mark of the current position. */ yaml_mark_t mark; /** * @} */ /** * @name Scanner stuff * @{ */ /** Have we started to scan the input stream? */ int stream_start_produced; /** Have we reached the end of the input stream? */ int stream_end_produced; /** The number of unclosed '[' and '{' indicators. */ int flow_level; /** The tokens queue. */ struct { /** The beginning of the tokens queue. */ yaml_token_t *start; /** The end of the tokens queue. */ yaml_token_t *end; /** The head of the tokens queue. */ yaml_token_t *head; /** The tail of the tokens queue. */ yaml_token_t *tail; } tokens; /** The number of tokens fetched from the queue. */ size_t tokens_parsed; /* Does the tokens queue contain a token ready for dequeueing. */ int token_available; /** The indentation levels stack. */ struct { /** The beginning of the stack. */ int *start; /** The end of the stack. */ int *end; /** The top of the stack. */ int *top; } indents; /** The current indentation level. */ int indent; /** May a simple key occur at the current position? */ int simple_key_allowed; /** The stack of simple keys. */ struct { /** The beginning of the stack. */ yaml_simple_key_t *start; /** The end of the stack. */ yaml_simple_key_t *end; /** The top of the stack. */ yaml_simple_key_t *top; } simple_keys; /** * @} */ /** * @name Parser stuff * @{ */ /** The parser states stack. */ struct { /** The beginning of the stack. */ yaml_parser_state_t *start; /** The end of the stack. */ yaml_parser_state_t *end; /** The top of the stack. */ yaml_parser_state_t *top; } states; /** The current parser state. */ yaml_parser_state_t state; /** The stack of marks. */ struct { /** The beginning of the stack. */ yaml_mark_t *start; /** The end of the stack. */ yaml_mark_t *end; /** The top of the stack. */ yaml_mark_t *top; } marks; /** The list of TAG directives. */ struct { /** The beginning of the list. */ yaml_tag_directive_t *start; /** The end of the list. */ yaml_tag_directive_t *end; /** The top of the list. */ yaml_tag_directive_t *top; } tag_directives; /** * @} */ /** * @name Dumper stuff * @{ */ /** The alias data. */ struct { /** The beginning of the list. */ yaml_alias_data_t *start; /** The end of the list. */ yaml_alias_data_t *end; /** The top of the list. */ yaml_alias_data_t *top; } aliases; /** The currently parsed document. */ yaml_document_t *document; /** * @} */ } yaml_parser_t; /** * Initialize a parser. * * This function creates a new parser object. An application is responsible * for destroying the object using the yaml_parser_delete() function. * * @param[out] parser An empty parser object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_parser_initialize(yaml_parser_t *parser); /** * Destroy a parser. * * @param[in,out] parser A parser object. */ YAML_DECLARE(void) yaml_parser_delete(yaml_parser_t *parser); /** * Set a string input. * * Note that the @a input pointer must be valid while the @a parser object * exists. The application is responsible for destroing @a input after * destroying the @a parser. * * @param[in,out] parser A parser object. * @param[in] input A source data. * @param[in] size The length of the source data in bytes. */ YAML_DECLARE(void) yaml_parser_set_input_string(yaml_parser_t *parser, const unsigned char *input, size_t size); /** * Set a file input. * * @a file should be a file object open for reading. The application is * responsible for closing the @a file. * * @param[in,out] parser A parser object. * @param[in] file An open file. */ YAML_DECLARE(void) yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file); /** * Set a generic input handler. * * @param[in,out] parser A parser object. * @param[in] handler A read handler. * @param[in] data Any application data for passing to the read * handler. */ YAML_DECLARE(void) yaml_parser_set_input(yaml_parser_t *parser, yaml_read_handler_t *handler, void *data); /** * Set the source encoding. * * @param[in,out] parser A parser object. * @param[in] encoding The source encoding. */ YAML_DECLARE(void) yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding); /** * Scan the input stream and produce the next token. * * Call the function subsequently to produce a sequence of tokens corresponding * to the input stream. The initial token has the type * @c YAML_STREAM_START_TOKEN while the ending token has the type * @c YAML_STREAM_END_TOKEN. * * An application is responsible for freeing any buffers associated with the * produced token object using the @c yaml_token_delete function. * * An application must not alternate the calls of yaml_parser_scan() with the * calls of yaml_parser_parse() or yaml_parser_load(). Doing this will break * the parser. * * @param[in,out] parser A parser object. * @param[out] token An empty token object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token); /** * Parse the input stream and produce the next parsing event. * * Call the function subsequently to produce a sequence of events corresponding * to the input stream. The initial event has the type * @c YAML_STREAM_START_EVENT while the ending event has the type * @c YAML_STREAM_END_EVENT. * * An application is responsible for freeing any buffers associated with the * produced event object using the yaml_event_delete() function. * * An application must not alternate the calls of yaml_parser_parse() with the * calls of yaml_parser_scan() or yaml_parser_load(). Doing this will break the * parser. * * @param[in,out] parser A parser object. * @param[out] event An empty event object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event); /** * Parse the input stream and produce the next YAML document. * * Call this function subsequently to produce a sequence of documents * constituting the input stream. * * If the produced document has no root node, it means that the document * end has been reached. * * An application is responsible for freeing any data associated with the * produced document object using the yaml_document_delete() function. * * An application must not alternate the calls of yaml_parser_load() with the * calls of yaml_parser_scan() or yaml_parser_parse(). Doing this will break * the parser. * * @param[in,out] parser A parser object. * @param[out] document An empty document object. * * @return @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document); /** @} */ /** * @defgroup emitter Emitter Definitions * @{ */ /** * The prototype of a write handler. * * The write handler is called when the emitter needs to flush the accumulated * characters to the output. The handler should write @a size bytes of the * @a buffer to the output. * * @param[in,out] data A pointer to an application data specified by * yaml_emitter_set_output(). * @param[in] buffer The buffer with bytes to be written. * @param[in] size The size of the buffer. * * @returns On success, the handler should return @c 1. If the handler failed, * the returned value should be @c 0. */ typedef int yaml_write_handler_t(void *data, unsigned char *buffer, size_t size); /** The emitter states. */ typedef enum yaml_emitter_state_e { /** Expect STREAM-START. */ YAML_EMIT_STREAM_START_STATE, /** Expect the first DOCUMENT-START or STREAM-END. */ YAML_EMIT_FIRST_DOCUMENT_START_STATE, /** Expect DOCUMENT-START or STREAM-END. */ YAML_EMIT_DOCUMENT_START_STATE, /** Expect the content of a document. */ YAML_EMIT_DOCUMENT_CONTENT_STATE, /** Expect DOCUMENT-END. */ YAML_EMIT_DOCUMENT_END_STATE, /** Expect the first item of a flow sequence. */ YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE, /** Expect an item of a flow sequence. */ YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE, /** Expect the first key of a flow mapping. */ YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE, /** Expect a key of a flow mapping. */ YAML_EMIT_FLOW_MAPPING_KEY_STATE, /** Expect a value for a simple key of a flow mapping. */ YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE, /** Expect a value of a flow mapping. */ YAML_EMIT_FLOW_MAPPING_VALUE_STATE, /** Expect the first item of a block sequence. */ YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE, /** Expect an item of a block sequence. */ YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE, /** Expect the first key of a block mapping. */ YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE, /** Expect the key of a block mapping. */ YAML_EMIT_BLOCK_MAPPING_KEY_STATE, /** Expect a value for a simple key of a block mapping. */ YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE, /** Expect a value of a block mapping. */ YAML_EMIT_BLOCK_MAPPING_VALUE_STATE, /** Expect nothing. */ YAML_EMIT_END_STATE } yaml_emitter_state_t; /** * The emitter structure. * * All members are internal. Manage the structure using the @c yaml_emitter_ * family of functions. */ typedef struct yaml_emitter_s { /** * @name Error handling * @{ */ /** Error type. */ yaml_error_type_t error; /** Error description. */ const char *problem; /** * @} */ /** * @name Writer stuff * @{ */ /** Write handler. */ yaml_write_handler_t *write_handler; /** A pointer for passing to the white handler. */ void *write_handler_data; /** Standard (string or file) output data. */ union { /** String output data. */ struct { /** The buffer pointer. */ unsigned char *buffer; /** The buffer size. */ size_t size; /** The number of written bytes. */ size_t *size_written; } string; /** File output data. */ FILE *file; } output; /** The working buffer. */ struct { /** The beginning of the buffer. */ yaml_char_t *start; /** The end of the buffer. */ yaml_char_t *end; /** The current position of the buffer. */ yaml_char_t *pointer; /** The last filled position of the buffer. */ yaml_char_t *last; } buffer; /** The raw buffer. */ struct { /** The beginning of the buffer. */ unsigned char *start; /** The end of the buffer. */ unsigned char *end; /** The current position of the buffer. */ unsigned char *pointer; /** The last filled position of the buffer. */ unsigned char *last; } raw_buffer; /** The stream encoding. */ yaml_encoding_t encoding; /** * @} */ /** * @name Emitter stuff * @{ */ /** If the output is in the canonical style? */ int canonical; /** The number of indentation spaces. */ int best_indent; /** The preferred width of the output lines. */ int best_width; /** Allow unescaped non-ASCII characters? */ int unicode; /** The preferred line break. */ yaml_break_t line_break; /** The stack of states. */ struct { /** The beginning of the stack. */ yaml_emitter_state_t *start; /** The end of the stack. */ yaml_emitter_state_t *end; /** The top of the stack. */ yaml_emitter_state_t *top; } states; /** The current emitter state. */ yaml_emitter_state_t state; /** The event queue. */ struct { /** The beginning of the event queue. */ yaml_event_t *start; /** The end of the event queue. */ yaml_event_t *end; /** The head of the event queue. */ yaml_event_t *head; /** The tail of the event queue. */ yaml_event_t *tail; } events; /** The stack of indentation levels. */ struct { /** The beginning of the stack. */ int *start; /** The end of the stack. */ int *end; /** The top of the stack. */ int *top; } indents; /** The list of tag directives. */ struct { /** The beginning of the list. */ yaml_tag_directive_t *start; /** The end of the list. */ yaml_tag_directive_t *end; /** The top of the list. */ yaml_tag_directive_t *top; } tag_directives; /** The current indentation level. */ int indent; /** The current flow level. */ int flow_level; /** Is it the document root context? */ int root_context; /** Is it a sequence context? */ int sequence_context; /** Is it a mapping context? */ int mapping_context; /** Is it a simple mapping key context? */ int simple_key_context; /** The current line. */ int line; /** The current column. */ int column; /** If the last character was a whitespace? */ int whitespace; /** If the last character was an indentation character (' ', '-', '?', ':')? */ int indention; /** If an explicit document end is required? */ int open_ended; /** Anchor analysis. */ struct { /** The anchor value. */ yaml_char_t *anchor; /** The anchor length. */ size_t anchor_length; /** Is it an alias? */ int alias; } anchor_data; /** Tag analysis. */ struct { /** The tag handle. */ yaml_char_t *handle; /** The tag handle length. */ size_t handle_length; /** The tag suffix. */ yaml_char_t *suffix; /** The tag suffix length. */ size_t suffix_length; } tag_data; /** Scalar analysis. */ struct { /** The scalar value. */ yaml_char_t *value; /** The scalar length. */ size_t length; /** Does the scalar contain line breaks? */ int multiline; /** Can the scalar be expessed in the flow plain style? */ int flow_plain_allowed; /** Can the scalar be expressed in the block plain style? */ int block_plain_allowed; /** Can the scalar be expressed in the single quoted style? */ int single_quoted_allowed; /** Can the scalar be expressed in the literal or folded styles? */ int block_allowed; /** The output style. */ yaml_scalar_style_t style; } scalar_data; /** * @} */ /** * @name Dumper stuff * @{ */ /** If the stream was already opened? */ int opened; /** If the stream was already closed? */ int closed; /** The information associated with the document nodes. */ struct { /** The number of references. */ int references; /** The anchor id. */ int anchor; /** If the node has been emitted? */ int serialized; } *anchors; /** The last assigned anchor id. */ int last_anchor_id; /** The currently emitted document. */ yaml_document_t *document; /** * @} */ } yaml_emitter_t; /** * Initialize an emitter. * * This function creates a new emitter object. An application is responsible * for destroying the object using the yaml_emitter_delete() function. * * @param[out] emitter An empty parser object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_emitter_initialize(yaml_emitter_t *emitter); /** * Destroy an emitter. * * @param[in,out] emitter An emitter object. */ YAML_DECLARE(void) yaml_emitter_delete(yaml_emitter_t *emitter); /** * Set a string output. * * The emitter will write the output characters to the @a output buffer of the * size @a size. The emitter will set @a size_written to the number of written * bytes. If the buffer is smaller than required, the emitter produces the * YAML_WRITE_ERROR error. * * @param[in,out] emitter An emitter object. * @param[in] output An output buffer. * @param[in] size The buffer size. * @param[in] size_written The pointer to save the number of written * bytes. */ YAML_DECLARE(void) yaml_emitter_set_output_string(yaml_emitter_t *emitter, unsigned char *output, size_t size, size_t *size_written); /** * Set a file output. * * @a file should be a file object open for writing. The application is * responsible for closing the @a file. * * @param[in,out] emitter An emitter object. * @param[in] file An open file. */ YAML_DECLARE(void) yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file); /** * Set a generic output handler. * * @param[in,out] emitter An emitter object. * @param[in] handler A write handler. * @param[in] data Any application data for passing to the write * handler. */ YAML_DECLARE(void) yaml_emitter_set_output(yaml_emitter_t *emitter, yaml_write_handler_t *handler, void *data); /** * Set the output encoding. * * @param[in,out] emitter An emitter object. * @param[in] encoding The output encoding. */ YAML_DECLARE(void) yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding); /** * Set if the output should be in the "canonical" format as in the YAML * specification. * * @param[in,out] emitter An emitter object. * @param[in] canonical If the output is canonical. */ YAML_DECLARE(void) yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical); /** * Set the intendation increment. * * @param[in,out] emitter An emitter object. * @param[in] indent The indentation increment (1 < . < 10). */ YAML_DECLARE(void) yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent); /** * Set the preferred line width. @c -1 means unlimited. * * @param[in,out] emitter An emitter object. * @param[in] width The preferred line width. */ YAML_DECLARE(void) yaml_emitter_set_width(yaml_emitter_t *emitter, int width); /** * Set if unescaped non-ASCII characters are allowed. * * @param[in,out] emitter An emitter object. * @param[in] unicode If unescaped Unicode characters are allowed. */ YAML_DECLARE(void) yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode); /** * Set the preferred line break. * * @param[in,out] emitter An emitter object. * @param[in] line_break The preferred line break. */ YAML_DECLARE(void) yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break); /** * Emit an event. * * The event object may be generated using the yaml_parser_parse() function. * The emitter takes the responsibility for the event object and destroys its * content after it is emitted. The event object is destroyed even if the * function fails. * * @param[in,out] emitter An emitter object. * @param[in,out] event An event object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event); /** * Start a YAML stream. * * This function should be used before yaml_emitter_dump() is called. * * @param[in,out] emitter An emitter object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_emitter_open(yaml_emitter_t *emitter); /** * Finish a YAML stream. * * This function should be used after yaml_emitter_dump() is called. * * @param[in,out] emitter An emitter object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_emitter_close(yaml_emitter_t *emitter); /** * Emit a YAML document. * * The documen object may be generated using the yaml_parser_load() function * or the yaml_document_initialize() function. The emitter takes the * responsibility for the document object and destoys its content after * it is emitted. The document object is destroyedeven if the function fails. * * @param[in,out] emitter An emitter object. * @param[in,out] document A document object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document); /** * Flush the accumulated characters to the output. * * @param[in,out] emitter An emitter object. * * @returns @c 1 if the function succeeded, @c 0 on error. */ YAML_DECLARE(int) yaml_emitter_flush(yaml_emitter_t *emitter); /** @} */ #ifdef __cplusplus } #endif #endif /* #ifndef YAML_H */ yaml-0.8.20/libyaml/yaml_private.h0000644000000000000000000007173213001717724015243 0ustar0000000000000000 #if HAVE_CONFIG_H #include #endif #include #include #include #include #ifndef _MSC_VER #include #else #ifdef _WIN64 #define PTRDIFF_MAX _I64_MAX #else #define PTRDIFF_MAX INT_MAX #endif #endif /* * Memory management. */ YAML_DECLARE(void *) yaml_malloc(size_t size); YAML_DECLARE(void *) yaml_realloc(void *ptr, size_t size); YAML_DECLARE(void) yaml_free(void *ptr); YAML_DECLARE(yaml_char_t *) yaml_strdup(const yaml_char_t *); /* * Reader: Ensure that the buffer contains at least `length` characters. */ YAML_DECLARE(int) yaml_parser_update_buffer(yaml_parser_t *parser, size_t length); /* * Scanner: Ensure that the token stack contains at least one token ready. */ YAML_DECLARE(int) yaml_parser_fetch_more_tokens(yaml_parser_t *parser); /* * The size of the input raw buffer. */ #define INPUT_RAW_BUFFER_SIZE 16384 /* * The size of the input buffer. * * It should be possible to decode the whole raw buffer. */ #define INPUT_BUFFER_SIZE (INPUT_RAW_BUFFER_SIZE*3) /* * The size of the output buffer. */ #define OUTPUT_BUFFER_SIZE 16384 /* * The size of the output raw buffer. * * It should be possible to encode the whole output buffer. */ #define OUTPUT_RAW_BUFFER_SIZE (OUTPUT_BUFFER_SIZE*2+2) /* * The size of other stacks and queues. */ #define INITIAL_STACK_SIZE 16 #define INITIAL_QUEUE_SIZE 16 #define INITIAL_STRING_SIZE 16 /* * Buffer management. */ #define BUFFER_INIT(context,buffer,size) \ (((buffer).start = yaml_malloc(size)) ? \ ((buffer).last = (buffer).pointer = (buffer).start, \ (buffer).end = (buffer).start+(size), \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define BUFFER_DEL(context,buffer) \ (yaml_free((buffer).start), \ (buffer).start = (buffer).pointer = (buffer).end = 0) /* * String management. */ typedef struct { yaml_char_t *start; yaml_char_t *end; yaml_char_t *pointer; } yaml_string_t; YAML_DECLARE(int) yaml_string_extend(yaml_char_t **start, yaml_char_t **pointer, yaml_char_t **end); YAML_DECLARE(int) yaml_string_join( yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end, yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end); #define NULL_STRING { NULL, NULL, NULL } #define STRING(string,length) { (string), (string)+(length), (string) } #define STRING_ASSIGN(value,string,length) \ ((value).start = (string), \ (value).end = (string)+(length), \ (value).pointer = (string)) #define STRING_INIT(context,string,size) \ (((string).start = yaml_malloc(size)) ? \ ((string).pointer = (string).start, \ (string).end = (string).start+(size), \ memset((string).start, 0, (size)), \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define STRING_DEL(context,string) \ (yaml_free((string).start), \ (string).start = (string).pointer = (string).end = 0) #define STRING_EXTEND(context,string) \ ((((string).pointer+5 < (string).end) \ || yaml_string_extend(&(string).start, \ &(string).pointer, &(string).end)) ? \ 1 : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define CLEAR(context,string) \ ((string).pointer = (string).start, \ memset((string).start, 0, (string).end-(string).start)) #define JOIN(context,string_a,string_b) \ ((yaml_string_join(&(string_a).start, &(string_a).pointer, \ &(string_a).end, &(string_b).start, \ &(string_b).pointer, &(string_b).end)) ? \ ((string_b).pointer = (string_b).start, \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) /* * String check operations. */ /* * Check the octet at the specified position. */ #define CHECK_AT(string,octet,offset) \ ((string).pointer[offset] == (yaml_char_t)(octet)) /* * Check the current octet in the buffer. */ #define CHECK(string,octet) CHECK_AT((string),(octet),0) /* * Check if the character at the specified position is an alphabetical * character, a digit, '_', or '-'. */ #define IS_ALPHA_AT(string,offset) \ (((string).pointer[offset] >= (yaml_char_t) '0' && \ (string).pointer[offset] <= (yaml_char_t) '9') || \ ((string).pointer[offset] >= (yaml_char_t) 'A' && \ (string).pointer[offset] <= (yaml_char_t) 'Z') || \ ((string).pointer[offset] >= (yaml_char_t) 'a' && \ (string).pointer[offset] <= (yaml_char_t) 'z') || \ (string).pointer[offset] == '_' || \ (string).pointer[offset] == '-') #define IS_ALPHA(string) IS_ALPHA_AT((string),0) /* * Check if the character at the specified position is a digit. */ #define IS_DIGIT_AT(string,offset) \ (((string).pointer[offset] >= (yaml_char_t) '0' && \ (string).pointer[offset] <= (yaml_char_t) '9')) #define IS_DIGIT(string) IS_DIGIT_AT((string),0) /* * Get the value of a digit. */ #define AS_DIGIT_AT(string,offset) \ ((string).pointer[offset] - (yaml_char_t) '0') #define AS_DIGIT(string) AS_DIGIT_AT((string),0) /* * Check if the character at the specified position is a hex-digit. */ #define IS_HEX_AT(string,offset) \ (((string).pointer[offset] >= (yaml_char_t) '0' && \ (string).pointer[offset] <= (yaml_char_t) '9') || \ ((string).pointer[offset] >= (yaml_char_t) 'A' && \ (string).pointer[offset] <= (yaml_char_t) 'F') || \ ((string).pointer[offset] >= (yaml_char_t) 'a' && \ (string).pointer[offset] <= (yaml_char_t) 'f')) #define IS_HEX(string) IS_HEX_AT((string),0) /* * Get the value of a hex-digit. */ #define AS_HEX_AT(string,offset) \ (((string).pointer[offset] >= (yaml_char_t) 'A' && \ (string).pointer[offset] <= (yaml_char_t) 'F') ? \ ((string).pointer[offset] - (yaml_char_t) 'A' + 10) : \ ((string).pointer[offset] >= (yaml_char_t) 'a' && \ (string).pointer[offset] <= (yaml_char_t) 'f') ? \ ((string).pointer[offset] - (yaml_char_t) 'a' + 10) : \ ((string).pointer[offset] - (yaml_char_t) '0')) #define AS_HEX(string) AS_HEX_AT((string),0) /* * Check if the character is ASCII. */ #define IS_ASCII_AT(string,offset) \ ((string).pointer[offset] <= (yaml_char_t) '\x7F') #define IS_ASCII(string) IS_ASCII_AT((string),0) /* * Check if the character can be printed unescaped. */ #define IS_PRINTABLE_AT(string,offset) \ (((string).pointer[offset] == 0x0A) /* . == #x0A */ \ || ((string).pointer[offset] >= 0x20 /* #x20 <= . <= #x7E */ \ && (string).pointer[offset] <= 0x7E) \ || ((string).pointer[offset] == 0xC2 /* #0xA0 <= . <= #xD7FF */ \ && (string).pointer[offset+1] >= 0xA0) \ || ((string).pointer[offset] > 0xC2 \ && (string).pointer[offset] < 0xED) \ || ((string).pointer[offset] == 0xED \ && (string).pointer[offset+1] < 0xA0) \ || ((string).pointer[offset] == 0xEE) \ || ((string).pointer[offset] == 0xEF /* #xE000 <= . <= #xFFFD */ \ && !((string).pointer[offset+1] == 0xBB /* && . != #xFEFF */ \ && (string).pointer[offset+2] == 0xBF) \ && !((string).pointer[offset+1] == 0xBF \ && ((string).pointer[offset+2] == 0xBE \ || (string).pointer[offset+2] == 0xBF)))) #define IS_PRINTABLE(string) IS_PRINTABLE_AT((string),0) /* * Check if the character at the specified position is NUL. */ #define IS_Z_AT(string,offset) CHECK_AT((string),'\0',(offset)) #define IS_Z(string) IS_Z_AT((string),0) /* * Check if the character at the specified position is BOM. */ #define IS_BOM_AT(string,offset) \ (CHECK_AT((string),'\xEF',(offset)) \ && CHECK_AT((string),'\xBB',(offset)+1) \ && CHECK_AT((string),'\xBF',(offset)+2)) /* BOM (#xFEFF) */ #define IS_BOM(string) IS_BOM_AT(string,0) /* * Check if the character at the specified position is space. */ #define IS_SPACE_AT(string,offset) CHECK_AT((string),' ',(offset)) #define IS_SPACE(string) IS_SPACE_AT((string),0) /* * Check if the character at the specified position is tab. */ #define IS_TAB_AT(string,offset) CHECK_AT((string),'\t',(offset)) #define IS_TAB(string) IS_TAB_AT((string),0) /* * Check if the character at the specified position is blank (space or tab). */ #define IS_BLANK_AT(string,offset) \ (IS_SPACE_AT((string),(offset)) || IS_TAB_AT((string),(offset))) #define IS_BLANK(string) IS_BLANK_AT((string),0) /* * Check if the character at the specified position is a line break. */ #define IS_BREAK_AT(string,offset) \ (CHECK_AT((string),'\r',(offset)) /* CR (#xD)*/ \ || CHECK_AT((string),'\n',(offset)) /* LF (#xA) */ \ || (CHECK_AT((string),'\xC2',(offset)) \ && CHECK_AT((string),'\x85',(offset)+1)) /* NEL (#x85) */ \ || (CHECK_AT((string),'\xE2',(offset)) \ && CHECK_AT((string),'\x80',(offset)+1) \ && CHECK_AT((string),'\xA8',(offset)+2)) /* LS (#x2028) */ \ || (CHECK_AT((string),'\xE2',(offset)) \ && CHECK_AT((string),'\x80',(offset)+1) \ && CHECK_AT((string),'\xA9',(offset)+2))) /* PS (#x2029) */ #define IS_BREAK(string) IS_BREAK_AT((string),0) #define IS_CRLF_AT(string,offset) \ (CHECK_AT((string),'\r',(offset)) && CHECK_AT((string),'\n',(offset)+1)) #define IS_CRLF(string) IS_CRLF_AT((string),0) /* * Check if the character is a line break or NUL. */ #define IS_BREAKZ_AT(string,offset) \ (IS_BREAK_AT((string),(offset)) || IS_Z_AT((string),(offset))) #define IS_BREAKZ(string) IS_BREAKZ_AT((string),0) /* * Check if the character is a line break, space, or NUL. */ #define IS_SPACEZ_AT(string,offset) \ (IS_SPACE_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset))) #define IS_SPACEZ(string) IS_SPACEZ_AT((string),0) /* * Check if the character is a line break, space, tab, or NUL. */ #define IS_BLANKZ_AT(string,offset) \ (IS_BLANK_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset))) #define IS_BLANKZ(string) IS_BLANKZ_AT((string),0) /* * Determine the width of the character. */ #define WIDTH_AT(string,offset) \ (((string).pointer[offset] & 0x80) == 0x00 ? 1 : \ ((string).pointer[offset] & 0xE0) == 0xC0 ? 2 : \ ((string).pointer[offset] & 0xF0) == 0xE0 ? 3 : \ ((string).pointer[offset] & 0xF8) == 0xF0 ? 4 : 0) #define WIDTH(string) WIDTH_AT((string),0) /* * Move the string pointer to the next character. */ #define MOVE(string) ((string).pointer += WIDTH((string))) /* * Copy a character and move the pointers of both strings. */ #define COPY(string_a,string_b) \ ((*(string_b).pointer & 0x80) == 0x00 ? \ (*((string_a).pointer++) = *((string_b).pointer++)) : \ (*(string_b).pointer & 0xE0) == 0xC0 ? \ (*((string_a).pointer++) = *((string_b).pointer++), \ *((string_a).pointer++) = *((string_b).pointer++)) : \ (*(string_b).pointer & 0xF0) == 0xE0 ? \ (*((string_a).pointer++) = *((string_b).pointer++), \ *((string_a).pointer++) = *((string_b).pointer++), \ *((string_a).pointer++) = *((string_b).pointer++)) : \ (*(string_b).pointer & 0xF8) == 0xF0 ? \ (*((string_a).pointer++) = *((string_b).pointer++), \ *((string_a).pointer++) = *((string_b).pointer++), \ *((string_a).pointer++) = *((string_b).pointer++), \ *((string_a).pointer++) = *((string_b).pointer++)) : 0) /* * Stack and queue management. */ YAML_DECLARE(int) yaml_stack_extend(void **start, void **top, void **end); YAML_DECLARE(int) yaml_queue_extend(void **start, void **head, void **tail, void **end); #define STACK_INIT(context,stack,size) \ (((stack).start = yaml_malloc((size)*sizeof(*(stack).start))) ? \ ((stack).top = (stack).start, \ (stack).end = (stack).start+(size), \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define STACK_DEL(context,stack) \ (yaml_free((stack).start), \ (stack).start = (stack).top = (stack).end = 0) #define STACK_EMPTY(context,stack) \ ((stack).start == (stack).top) #define STACK_LIMIT(context,stack,size) \ ((stack).top - (stack).start < (size) ? \ 1 : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define PUSH(context,stack,value) \ (((stack).top != (stack).end \ || yaml_stack_extend((void **)&(stack).start, \ (void **)&(stack).top, (void **)&(stack).end)) ? \ (*((stack).top++) = value, \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define POP(context,stack) \ (*(--(stack).top)) #define QUEUE_INIT(context,queue,size) \ (((queue).start = yaml_malloc((size)*sizeof(*(queue).start))) ? \ ((queue).head = (queue).tail = (queue).start, \ (queue).end = (queue).start+(size), \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define QUEUE_DEL(context,queue) \ (yaml_free((queue).start), \ (queue).start = (queue).head = (queue).tail = (queue).end = 0) #define QUEUE_EMPTY(context,queue) \ ((queue).head == (queue).tail) #define ENQUEUE(context,queue,value) \ (((queue).tail != (queue).end \ || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \ (void **)&(queue).tail, (void **)&(queue).end)) ? \ (*((queue).tail++) = value, \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) #define DEQUEUE(context,queue) \ (*((queue).head++)) #define QUEUE_INSERT(context,queue,index,value) \ (((queue).tail != (queue).end \ || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head, \ (void **)&(queue).tail, (void **)&(queue).end)) ? \ (memmove((queue).head+(index)+1,(queue).head+(index), \ ((queue).tail-(queue).head-(index))*sizeof(*(queue).start)), \ *((queue).head+(index)) = value, \ (queue).tail++, \ 1) : \ ((context)->error = YAML_MEMORY_ERROR, \ 0)) /* * Token initializers. */ #define TOKEN_INIT(token,token_type,token_start_mark,token_end_mark) \ (memset(&(token), 0, sizeof(yaml_token_t)), \ (token).type = (token_type), \ (token).start_mark = (token_start_mark), \ (token).end_mark = (token_end_mark)) #define STREAM_START_TOKEN_INIT(token,token_encoding,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_STREAM_START_TOKEN,(start_mark),(end_mark)), \ (token).data.stream_start.encoding = (token_encoding)) #define STREAM_END_TOKEN_INIT(token,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_STREAM_END_TOKEN,(start_mark),(end_mark))) #define ALIAS_TOKEN_INIT(token,token_value,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_ALIAS_TOKEN,(start_mark),(end_mark)), \ (token).data.alias.value = (token_value)) #define ANCHOR_TOKEN_INIT(token,token_value,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_ANCHOR_TOKEN,(start_mark),(end_mark)), \ (token).data.anchor.value = (token_value)) #define TAG_TOKEN_INIT(token,token_handle,token_suffix,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_TAG_TOKEN,(start_mark),(end_mark)), \ (token).data.tag.handle = (token_handle), \ (token).data.tag.suffix = (token_suffix)) #define SCALAR_TOKEN_INIT(token,token_value,token_length,token_style,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_SCALAR_TOKEN,(start_mark),(end_mark)), \ (token).data.scalar.value = (token_value), \ (token).data.scalar.length = (token_length), \ (token).data.scalar.style = (token_style)) #define VERSION_DIRECTIVE_TOKEN_INIT(token,token_major,token_minor,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_VERSION_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \ (token).data.version_directive.major = (token_major), \ (token).data.version_directive.minor = (token_minor)) #define TAG_DIRECTIVE_TOKEN_INIT(token,token_handle,token_prefix,start_mark,end_mark) \ (TOKEN_INIT((token),YAML_TAG_DIRECTIVE_TOKEN,(start_mark),(end_mark)), \ (token).data.tag_directive.handle = (token_handle), \ (token).data.tag_directive.prefix = (token_prefix)) /* * Event initializers. */ #define EVENT_INIT(event,event_type,event_start_mark,event_end_mark) \ (memset(&(event), 0, sizeof(yaml_event_t)), \ (event).type = (event_type), \ (event).start_mark = (event_start_mark), \ (event).end_mark = (event_end_mark)) #define STREAM_START_EVENT_INIT(event,event_encoding,start_mark,end_mark) \ (EVENT_INIT((event),YAML_STREAM_START_EVENT,(start_mark),(end_mark)), \ (event).data.stream_start.encoding = (event_encoding)) #define STREAM_END_EVENT_INIT(event,start_mark,end_mark) \ (EVENT_INIT((event),YAML_STREAM_END_EVENT,(start_mark),(end_mark))) #define DOCUMENT_START_EVENT_INIT(event,event_version_directive, \ event_tag_directives_start,event_tag_directives_end,event_implicit,start_mark,end_mark) \ (EVENT_INIT((event),YAML_DOCUMENT_START_EVENT,(start_mark),(end_mark)), \ (event).data.document_start.version_directive = (event_version_directive), \ (event).data.document_start.tag_directives.start = (event_tag_directives_start), \ (event).data.document_start.tag_directives.end = (event_tag_directives_end), \ (event).data.document_start.implicit = (event_implicit)) #define DOCUMENT_END_EVENT_INIT(event,event_implicit,start_mark,end_mark) \ (EVENT_INIT((event),YAML_DOCUMENT_END_EVENT,(start_mark),(end_mark)), \ (event).data.document_end.implicit = (event_implicit)) #define ALIAS_EVENT_INIT(event,event_anchor,start_mark,end_mark) \ (EVENT_INIT((event),YAML_ALIAS_EVENT,(start_mark),(end_mark)), \ (event).data.alias.anchor = (event_anchor)) #define SCALAR_EVENT_INIT(event,event_anchor,event_tag,event_value,event_length, \ event_plain_implicit, event_quoted_implicit,event_style,start_mark,end_mark) \ (EVENT_INIT((event),YAML_SCALAR_EVENT,(start_mark),(end_mark)), \ (event).data.scalar.anchor = (event_anchor), \ (event).data.scalar.tag = (event_tag), \ (event).data.scalar.value = (event_value), \ (event).data.scalar.length = (event_length), \ (event).data.scalar.plain_implicit = (event_plain_implicit), \ (event).data.scalar.quoted_implicit = (event_quoted_implicit), \ (event).data.scalar.style = (event_style)) #define SEQUENCE_START_EVENT_INIT(event,event_anchor,event_tag, \ event_implicit,event_style,start_mark,end_mark) \ (EVENT_INIT((event),YAML_SEQUENCE_START_EVENT,(start_mark),(end_mark)), \ (event).data.sequence_start.anchor = (event_anchor), \ (event).data.sequence_start.tag = (event_tag), \ (event).data.sequence_start.implicit = (event_implicit), \ (event).data.sequence_start.style = (event_style)) #define SEQUENCE_END_EVENT_INIT(event,start_mark,end_mark) \ (EVENT_INIT((event),YAML_SEQUENCE_END_EVENT,(start_mark),(end_mark))) #define MAPPING_START_EVENT_INIT(event,event_anchor,event_tag, \ event_implicit,event_style,start_mark,end_mark) \ (EVENT_INIT((event),YAML_MAPPING_START_EVENT,(start_mark),(end_mark)), \ (event).data.mapping_start.anchor = (event_anchor), \ (event).data.mapping_start.tag = (event_tag), \ (event).data.mapping_start.implicit = (event_implicit), \ (event).data.mapping_start.style = (event_style)) #define MAPPING_END_EVENT_INIT(event,start_mark,end_mark) \ (EVENT_INIT((event),YAML_MAPPING_END_EVENT,(start_mark),(end_mark))) /* * Document initializer. */ #define DOCUMENT_INIT(document,document_nodes_start,document_nodes_end, \ document_version_directive,document_tag_directives_start, \ document_tag_directives_end,document_start_implicit, \ document_end_implicit,document_start_mark,document_end_mark) \ (memset(&(document), 0, sizeof(yaml_document_t)), \ (document).nodes.start = (document_nodes_start), \ (document).nodes.end = (document_nodes_end), \ (document).nodes.top = (document_nodes_start), \ (document).version_directive = (document_version_directive), \ (document).tag_directives.start = (document_tag_directives_start), \ (document).tag_directives.end = (document_tag_directives_end), \ (document).start_implicit = (document_start_implicit), \ (document).end_implicit = (document_end_implicit), \ (document).start_mark = (document_start_mark), \ (document).end_mark = (document_end_mark)) /* * Node initializers. */ #define NODE_INIT(node,node_type,node_tag,node_start_mark,node_end_mark) \ (memset(&(node), 0, sizeof(yaml_node_t)), \ (node).type = (node_type), \ (node).tag = (node_tag), \ (node).start_mark = (node_start_mark), \ (node).end_mark = (node_end_mark)) #define SCALAR_NODE_INIT(node,node_tag,node_value,node_length, \ node_style,start_mark,end_mark) \ (NODE_INIT((node),YAML_SCALAR_NODE,(node_tag),(start_mark),(end_mark)), \ (node).data.scalar.value = (node_value), \ (node).data.scalar.length = (node_length), \ (node).data.scalar.style = (node_style)) #define SEQUENCE_NODE_INIT(node,node_tag,node_items_start,node_items_end, \ node_style,start_mark,end_mark) \ (NODE_INIT((node),YAML_SEQUENCE_NODE,(node_tag),(start_mark),(end_mark)), \ (node).data.sequence.items.start = (node_items_start), \ (node).data.sequence.items.end = (node_items_end), \ (node).data.sequence.items.top = (node_items_start), \ (node).data.sequence.style = (node_style)) #define MAPPING_NODE_INIT(node,node_tag,node_pairs_start,node_pairs_end, \ node_style,start_mark,end_mark) \ (NODE_INIT((node),YAML_MAPPING_NODE,(node_tag),(start_mark),(end_mark)), \ (node).data.mapping.pairs.start = (node_pairs_start), \ (node).data.mapping.pairs.end = (node_pairs_end), \ (node).data.mapping.pairs.top = (node_pairs_start), \ (node).data.mapping.style = (node_style)) #define YAML_VERSION_STRING "0.1.7" #define YAML_VERSION_MAJOR 0 #define YAML_VERSION_MINOR 1 #define YAML_VERSION_PATCH 7 yaml-0.8.20/test/0000755000000000000000000000000013001717724011712 5ustar0000000000000000yaml-0.8.20/test/json.yaml0000644000000000000000000000014513001717724013547 0ustar0000000000000000string: str number: 2 anArray: - a - b hash: key1: value1 key2: value2 extrastring: 1234-foo yaml-0.8.20/test/largest-string.yaml0000644000000000000000000000026013001717724015541 0ustar0000000000000000this is a long string: but this one is even longer this is shorter: - many - tiny - string one the other hand: this one is just a little bit bigger than the others yaml-0.8.20/test/Spec.hs0000644000000000000000000000005413001717724013137 0ustar0000000000000000{-# OPTIONS_GHC -F -pgmF hspec-discover #-} yaml-0.8.20/test/Data/0000755000000000000000000000000013001717724012563 5ustar0000000000000000yaml-0.8.20/test/Data/YamlSpec.hs0000644000000000000000000004604613001717724014646 0ustar0000000000000000{-# LANGUAGE CPP #-} {-# LANGUAGE PackageImports #-} {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE TemplateHaskell #-} module Data.YamlSpec (main, spec) where import qualified Text.Libyaml as Y import qualified Data.ByteString.Char8 as B8 import Test.HUnit hiding (Test, path) import qualified Data.Conduit as C import qualified Control.Monad.Trans.Resource as C import qualified Data.Conduit.List as CL import Control.Monad import Control.Exception (try, SomeException) import Test.Hspec import Data.Either.Compat import System.Directory (createDirectory, createDirectoryIfMissing) import Test.Mockery.Directory import qualified Data.Yaml as D import qualified Data.Yaml.Pretty as Pretty import Data.Yaml (object, array, (.=)) import Data.Maybe import qualified Data.HashMap.Strict as M import qualified Data.Text as T import Data.Aeson.TH import Data.Text (Text) import Data.Vector (Vector) import qualified Data.Vector as V import Data.HashMap.Strict (HashMap) import qualified Data.HashMap.Strict as HM import System.IO (hClose) import System.IO.Temp (withSystemTempFile) data TestJSON = TestJSON { string :: Text , number :: Int , anArray :: Vector Text , hash :: HashMap Text Text , extrastring :: Text } deriving (Show, Eq) deriveJSON defaultOptions ''TestJSON main :: IO () main = hspec spec spec :: Spec spec = do describe "streaming" $ do it "count scalars with anchor" caseCountScalarsWithAnchor it "count sequences with anchor" caseCountSequencesWithAnchor it "count mappings with anchor" caseCountMappingsWithAnchor it "count aliases" caseCountAliases it "count scalars" caseCountScalars it "largest string" caseLargestString it "encode/decode" caseEncodeDecode it "encode/decode file" caseEncodeDecodeFile it "interleaved encode/decode" caseInterleave it "decode invalid document (without segfault)" caseDecodeInvalidDocument describe "Data.Yaml" $ do it "encode/decode" caseEncodeDecodeData it "encode/decode file" caseEncodeDecodeFileData it "encode/decode files with non-ASCII names" caseEncodeDecodeNonAsciiFileData it "encode/decode strings" caseEncodeDecodeStrings it "decode invalid file" caseDecodeInvalid it "processes datatypes" caseDataTypes describe "Data.Yaml.Pretty" $ do it "encode/decode" caseEncodeDecodeDataPretty it "encode/decode strings" caseEncodeDecodeStringsPretty it "processes datatypes" caseDataTypesPretty describe "Data.Yaml aliases" $ do it "simple scalar alias" caseSimpleScalarAlias it "simple sequence alias" caseSimpleSequenceAlias it "simple mapping alias" caseSimpleMappingAlias it "mapping alias before anchor" caseMappingAliasBeforeAnchor it "mapping alias inside anchor" caseMappingAliasInsideAnchor it "scalar alias overriding" caseScalarAliasOverriding describe "Data.Yaml merge keys" $ do it "test uniqueness of keys" caseAllKeysShouldBeUnique it "test mapping merge" caseSimpleMappingMerge it "test sequence of mappings merging" caseMergeSequence describe "numbers" $ do it "parses as string when quoted" caseQuotedNumber it "parses as number when unquoted" caseUnquotedNumber it "parses as number !!str is present" caseAttribNumber it "integers have no decimals" caseIntegerDecimals describe "booleans" $ do it "parses when all lowercase" caseLowercaseBool it "parses when all uppercase" caseUppercaseBool it "parses when titlecase" caseTitlecaseBool describe "empty input" $ do it "doesn't crash" caseEmptyInput describe "alias stripping" $ do it "works" caseStripAlias describe "nulls" $ do checkNull "null" checkNull "Null" checkNull "NULL" checkNull "~" checkNull "" describe "pretty output" $ do it "simple nulls" $ D.encode (object ["foo" .= D.Null]) `shouldBe` "foo: null\n" it "simple numbers" $ D.encode (object ["foo" .= (4 :: Int)]) `shouldBe` "foo: 4\n" it "True" $ D.encode (object ["foo" .= True]) `shouldBe` "foo: true\n" it "False" $ D.encode (object ["foo" .= False]) `shouldBe` "foo: false\n" it "simple string" $ D.encode (object ["foo" .= ("bar" :: T.Text)]) `shouldBe` "foo: bar\n" describe "special keys" $ do let tester key = it (T.unpack key) $ let value = object [key .= True] in D.decode (D.encode value) `shouldBe` Just value mapM_ tester specialStrings describe "special values" $ do let tester value = it (T.unpack value) $ let value' = object ["foo" .= value] in D.decode (D.encode value') `shouldBe` Just value' mapM_ tester specialStrings describe "decodeFileEither" $ do it "loads YAML through JSON into Haskell data" $ do tj <- either (error . show) id `fmap` D.decodeFileEither "test/json.yaml" tj `shouldBe` TestJSON { string = "str" , number = 2 , anArray = V.fromList ["a", "b"] , hash = HM.fromList [("key1", "value1"), ("key2", "value2")] , extrastring = "1234-foo" } context "when file does not exist" $ do it "returns Left" $ do (D.decodeFileEither "./does_not_exist.yaml" :: IO (Either D.ParseException D.Value)) >>= (`shouldSatisfy` isLeft) describe "round-tripping of special scalars" $ do let special = words "y Y On ON false 12345 12345.0 12345a 12e3" forM_ special $ \w -> it w $ let v = object ["word" .= w] in D.decode (D.encode v) `shouldBe` Just v it "no tags" $ D.encode (object ["word" .= ("true" :: String)]) `shouldBe` "word: 'true'\n" it "aliases in keys #49" caseIssue49 it "serialization of +123 #64" $ do D.decode (D.encode ("+123" :: String)) `shouldBe` Just ("+123" :: String) it "preserves Scientific precision" casePreservesScientificPrecision it "truncates files" caseTruncatesFiles specialStrings :: [T.Text] specialStrings = [ "fo\"o" , "fo\'o" , "fo\\'o" , "fo: o" , "foo\nbar\nbaz\n" ] counter :: Monad m => (Y.Event -> Bool) -> C.Sink Y.Event m Int counter pred' = CL.fold (\cnt e -> (if pred' e then 1 else 0) + cnt) 0 caseHelper :: String -> (Y.Event -> Bool) -> Int -> Assertion caseHelper yamlString pred' expRes = do res <- C.runResourceT $ Y.decode (B8.pack yamlString) C.$$ counter pred' res @?= expRes caseCountScalarsWithAnchor :: Assertion caseCountScalarsWithAnchor = caseHelper yamlString isScalarA 1 where yamlString = "foo:\n - &anchor bin1\n - bin2\n - bin3" isScalarA (Y.EventScalar _ _ _ (Just _)) = True isScalarA _ = False caseCountSequencesWithAnchor :: Assertion caseCountSequencesWithAnchor = caseHelper yamlString isSequenceStartA 1 where yamlString = "foo: &anchor\n - bin1\n - bin2\n - bin3" isSequenceStartA (Y.EventSequenceStart (Just _)) = True isSequenceStartA _ = False caseCountMappingsWithAnchor :: Assertion caseCountMappingsWithAnchor = caseHelper yamlString isMappingA 1 where yamlString = "foo: &anchor\n key1: bin1\n key2: bin2\n key3: bin3" isMappingA (Y.EventMappingStart (Just _)) = True isMappingA _ = False caseCountAliases :: Assertion caseCountAliases = caseHelper yamlString isAlias 1 where yamlString = "foo: &anchor\n key1: bin1\n key2: bin2\n key3: bin3\nboo: *anchor" isAlias Y.EventAlias{} = True isAlias _ = False caseCountScalars :: Assertion caseCountScalars = do res <- C.runResourceT $ Y.decode yamlBS C.$$ CL.fold adder accum res @?= (7, 1, 2) where yamlString = "foo:\n baz: [bin1, bin2, bin3]\nbaz: bazval" yamlBS = B8.pack yamlString adder (s, l, m) (Y.EventScalar{}) = (s + 1, l, m) adder (s, l, m) (Y.EventSequenceStart{}) = (s, l + 1, m) adder (s, l, m) (Y.EventMappingStart{}) = (s, l, m + 1) adder a _ = a accum = (0, 0, 0) :: (Int, Int, Int) caseLargestString :: Assertion caseLargestString = do res <- C.runResourceT $ Y.decodeFile filePath C.$$ CL.fold adder accum res @?= (length expected, expected) where expected = "this one is just a little bit bigger than the others" filePath = "test/largest-string.yaml" adder (i, s) (Y.EventScalar bs _ _ _) = let s' = B8.unpack bs i' = length s' in if i' > i then (i', s') else (i, s) adder acc _ = acc accum = (0, "no strings found") newtype MyEvent = MyEvent Y.Event deriving Show instance Eq MyEvent where (MyEvent (Y.EventScalar s t _ _)) == (MyEvent (Y.EventScalar s' t' _ _)) = s == s' && t == t' MyEvent e1 == MyEvent e2 = e1 == e2 caseEncodeDecode :: Assertion caseEncodeDecode = do eList <- C.runResourceT $ Y.decode yamlBS C.$$ CL.consume bs <- C.runResourceT $ CL.sourceList eList C.$$ Y.encode eList2 <- C.runResourceT $ Y.decode bs C.$$ CL.consume map MyEvent eList @=? map MyEvent eList2 where yamlString = "foo: bar\nbaz:\n - bin1\n - bin2\n" yamlBS = B8.pack yamlString caseEncodeDecodeFile :: Assertion caseEncodeDecodeFile = withFile "" $ \tmpPath -> do eList <- C.runResourceT $ Y.decodeFile filePath C.$$ CL.consume C.runResourceT $ CL.sourceList eList C.$$ Y.encodeFile tmpPath eList2 <- C.runResourceT $ Y.decodeFile filePath C.$$ CL.consume map MyEvent eList @=? map MyEvent eList2 where filePath = "test/largest-string.yaml" caseInterleave :: Assertion caseInterleave = withFile "" $ \tmpPath -> withFile "" $ \tmpPath2 -> do () <- C.runResourceT $ Y.decodeFile filePath C.$$ Y.encodeFile tmpPath () <- C.runResourceT $ Y.decodeFile tmpPath C.$$ Y.encodeFile tmpPath2 f1 <- readFile tmpPath f2 <- readFile tmpPath2 f1 @=? f2 where filePath = "test/largest-string.yaml" caseDecodeInvalidDocument :: Assertion caseDecodeInvalidDocument = do x <- try $ C.runResourceT $ Y.decode yamlBS C.$$ CL.sinkNull case x of Left (_ :: SomeException) -> return () Right y -> do putStrLn $ "bad return value: " ++ show y assertFailure "expected parsing exception, but got no errors" where yamlString = " - foo\n - baz\nbuz" yamlBS = B8.pack yamlString mkScalar :: String -> D.Value mkScalar = mkStrScalar mkStrScalar :: String -> D.Value mkStrScalar = D.String . T.pack mappingKey :: D.Value-> String -> D.Value mappingKey (D.Object m) k = (fromJust . M.lookup (T.pack k) $ m) mappingKey _ _ = error "expected Object" decodeYaml :: String -> Maybe D.Value decodeYaml s = D.decode $ B8.pack s sample :: D.Value sample = array [ D.String "foo" , object [ ("bar1", D.String "bar2") , ("bar3", D.String "") ] , D.String "" ] caseEncodeDecodeData :: Assertion caseEncodeDecodeData = do let out = D.decode $ D.encode sample out @?= Just sample caseEncodeDecodeDataPretty :: Assertion caseEncodeDecodeDataPretty = do let out = D.decode $ Pretty.encodePretty Pretty.defConfig sample out @?= Just sample caseEncodeDecodeFileData :: Assertion caseEncodeDecodeFileData = withFile "" $ \fp -> do D.encodeFile fp sample out <- D.decodeFile fp out @?= Just sample caseEncodeDecodeNonAsciiFileData :: Assertion caseEncodeDecodeNonAsciiFileData = do let mySample = (object ["foo" .= True]) inTempDirectory $ do createDirectory "accenté" D.encodeFile "accenté/bar.yaml" mySample out1 <- D.decodeFile "accenté/bar.yaml" out1 @?= Just mySample createDirectoryIfMissing True "test/resources/accenté/" readFile "test/resources/accent/foo.yaml" >>= writeFile "test/resources/accenté/foo.yaml" out2 <- D.decodeFile "test/resources/accenté/foo.yaml" out2 @?= Just mySample caseEncodeDecodeStrings :: Assertion caseEncodeDecodeStrings = do let out = D.decode $ D.encode sample out @?= Just sample caseEncodeDecodeStringsPretty :: Assertion caseEncodeDecodeStringsPretty = do let out = D.decode $ Pretty.encodePretty Pretty.defConfig sample out @?= Just sample caseDecodeInvalid :: Assertion caseDecodeInvalid = do let invalid = B8.pack "\tthis is 'not' valid :-)" Nothing @=? (D.decode invalid :: Maybe D.Value) caseSimpleScalarAlias :: Assertion caseSimpleScalarAlias = do let maybeRes = decodeYaml "- &anch foo\n- baz\n- *anch" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes res @?= array [(mkScalar "foo"), (mkScalar "baz"), (mkScalar "foo")] caseSimpleSequenceAlias :: Assertion caseSimpleSequenceAlias = do let maybeRes = decodeYaml "seq: &anch\n - foo\n - baz\nseq2: *anch" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes res @?= object [("seq", array [(mkScalar "foo"), (mkScalar "baz")]), ("seq2", array [(mkScalar "foo"), (mkScalar "baz")])] caseSimpleMappingAlias :: Assertion caseSimpleMappingAlias = do let maybeRes = decodeYaml "map: &anch\n key1: foo\n key2: baz\nmap2: *anch" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes res @?= object [(T.pack "map", object [("key1", mkScalar "foo"), ("key2", (mkScalar "baz"))]), (T.pack "map2", object [("key1", (mkScalar "foo")), ("key2", mkScalar "baz")])] caseMappingAliasBeforeAnchor :: Assertion caseMappingAliasBeforeAnchor = do let res = decodeYaml "map: *anch\nmap2: &anch\n key1: foo\n key2: baz" isNothing res @? "decode should return Nothing due to unknown alias" caseMappingAliasInsideAnchor :: Assertion caseMappingAliasInsideAnchor = do let res = decodeYaml "map: &anch\n key1: foo\n key2: *anch" isNothing res @? "decode should return Nothing due to unknown alias" caseScalarAliasOverriding :: Assertion caseScalarAliasOverriding = do let maybeRes = decodeYaml "- &anch foo\n- baz\n- *anch\n- &anch boo\n- buz\n- *anch" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes res @?= array [(mkScalar "foo"), (mkScalar "baz"), (mkScalar "foo"), (mkScalar "boo"), (mkScalar "buz"), (mkScalar "boo")] caseAllKeysShouldBeUnique :: Assertion caseAllKeysShouldBeUnique = do let maybeRes = decodeYaml "foo1: foo\nfoo2: baz\nfoo1: buz" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes mappingKey res "foo1" @?= (mkScalar "buz") caseSimpleMappingMerge :: Assertion caseSimpleMappingMerge = do let maybeRes = decodeYaml "foo1: foo\nfoo2: baz\n<<:\n foo1: buz\n foo3: fuz" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes mappingKey res "foo1" @?= (mkScalar "foo") mappingKey res "foo3" @?= (mkScalar "fuz") caseMergeSequence :: Assertion caseMergeSequence = do let maybeRes = decodeYaml "m1: &m1\n k1: !!str 1\n k2: !!str 2\nm2: &m2\n k1: !!str 3\n k3: !!str 4\nfoo1: foo\n<<: [ *m1, *m2 ]" isJust maybeRes @? "decoder should return Just YamlObject but returned Nothing" let res = fromJust maybeRes mappingKey res "foo1" @?= (mkScalar "foo") mappingKey res "k1" @?= (D.String "1") mappingKey res "k2" @?= (D.String "2") mappingKey res "k3" @?= (D.String "4") caseDataTypes :: Assertion caseDataTypes = D.decode (D.encode val) @?= Just val where val = object [ ("string", D.String "foo") , ("int", D.Number 5) , ("float", D.Number 4.3) , ("true", D.Bool True) , ("false", D.Bool False) , ("null", D.Null) ] caseDataTypesPretty :: Assertion caseDataTypesPretty = D.decode (Pretty.encodePretty Pretty.defConfig val) @?= Just val where val = object [ ("string", D.String "foo") , ("int", D.Number 5) , ("float", D.Number 4.3) , ("true", D.Bool True) , ("false", D.Bool False) , ("null", D.Null) ] caseQuotedNumber, caseUnquotedNumber, caseAttribNumber, caseIntegerDecimals :: Assertion caseQuotedNumber = D.decode "foo: \"1234\"" @?= Just (object [("foo", D.String "1234")]) caseUnquotedNumber = D.decode "foo: 1234" @?= Just (object [("foo", D.Number 1234)]) caseAttribNumber = D.decode "foo: !!str 1234" @?= Just (object [("foo", D.String "1234")]) caseIntegerDecimals = D.encode (1 :: Int) @?= "1\n...\n" obj :: Maybe D.Value obj = Just (object [("foo", D.Bool False), ("bar", D.Bool True), ("baz", D.Bool True)]) caseLowercaseBool, caseUppercaseBool, caseTitlecaseBool :: Assertion caseLowercaseBool = D.decode "foo: off\nbar: y\nbaz: true" @?= obj caseUppercaseBool = D.decode "foo: FALSE\nbar: Y\nbaz: ON" @?= obj caseTitlecaseBool = D.decode "foo: No\nbar: Yes\nbaz: True" @?= obj caseEmptyInput :: Assertion caseEmptyInput = D.decode B8.empty @?= (Nothing :: Maybe D.Value) checkNull :: T.Text -> Spec checkNull x = it ("null recognized: " ++ show x) assertion where assertion = Just (object [("foo", D.Null)]) @=? D.decode (B8.pack $ "foo: " ++ T.unpack x) caseStripAlias :: Assertion caseStripAlias = D.decode src @?= Just (object [ "Default" .= object [ "foo" .= (1 :: Int) , "bar" .= (2 :: Int) ] , "Obj" .= object [ "foo" .= (1 :: Int) , "bar" .= (2 :: Int) , "key" .= (3 :: Int) ] ]) where src = "Default: &def\n foo: 1\n bar: 2\nObj:\n <<: *def\n key: 3\n" caseIssue49 :: Assertion caseIssue49 = D.decodeEither src @?= Right (object [ "a" .= object [ "value" .= (1.0 :: Double) ] , "b" .= object [ "value" .= (1.2 :: Double) ] ]) where src = "---\na:\n &id5 value: 1.0\nb:\n *id5: 1.2" -- | We cannot guarantee this before aeson started using 'Scientific'. casePreservesScientificPrecision :: Assertion casePreservesScientificPrecision = do D.decodeEither "x: 1e-100000" @?= Right (object [ "x" .= D.Number (read "1e-100000") ]) -- Note that this ought to work also without 'Scientific', given -- that @read (show "9.78159610558926e-5") == 9.78159610558926e-5@. -- However, it didn't work (and still doesn't work with aeson < 0.7) -- for two reasons: -- -- * We use 'Data.Text.Read.double', which is not as accurate as it -- can be; -- * Even if we used 'Data.Text.Read.rational' we would not get good -- results, because of . D.decodeEither "x: 9.78159610558926e-5" @?= Right (object [ "x" .= D.Number (read "9.78159610558926e-5") ]) caseTruncatesFiles :: Assertion caseTruncatesFiles = withSystemTempFile "truncate.yaml" $ \fp h -> do replicateM_ 500 $ B8.hPut h "HELLO WORLD!!!!!\n" hClose h let val = object ["hello" .= ("world" :: String)] D.encodeFile fp val res <- D.decodeFileEither fp either (Left . show) Right res `shouldBe` Right val yaml-0.8.20/test/Data/Yaml/0000755000000000000000000000000013001717724013465 5ustar0000000000000000yaml-0.8.20/test/Data/Yaml/IncludeSpec.hs0000644000000000000000000000222213001717724016215 0ustar0000000000000000{-# LANGUAGE QuasiQuotes #-} module Data.Yaml.IncludeSpec (main, spec) where import Test.Hspec import Data.Either.Compat import Data.Aeson import Data.Aeson.QQ import Data.Yaml (ParseException) import Data.Yaml.Include main :: IO () main = hspec spec spec :: Spec spec = do describe "decodeFile" $ do it "supports includes" $ do decodeFile "test/resources/foo.yaml" `shouldReturn` Just [aesonQQ| { foo: 23, bar: {one: 1, two: 2}, baz: 42 } |] it "supports recursive includes" $ do decodeFile "test/resources/baz.yaml" `shouldReturn` Just [aesonQQ| { foo: { foo: 23, bar: {one: 1, two: 2}, baz: 42 } } |] it "aborts on cyclic includes" $ do (decodeFile "test/resources/loop/foo.yaml" :: IO (Maybe Value)) `shouldThrow` anyException describe "decodeFileEither" $ do context "when file does not exist" $ do it "returns Left" $ do (decodeFileEither "./does_not_exist.yaml" :: IO (Either ParseException Value)) >>= (`shouldSatisfy` isLeft) yaml-0.8.20/test/resources/0000755000000000000000000000000013001717724013724 5ustar0000000000000000yaml-0.8.20/test/resources/bar.yaml0000644000000000000000000000001613001717724015351 0ustar0000000000000000one: 1 two: 2 yaml-0.8.20/test/resources/baz.yaml0000644000000000000000000000002713001717724015363 0ustar0000000000000000foo: !include foo.yaml yaml-0.8.20/test/resources/foo.yaml0000644000000000000000000000004713001717724015374 0ustar0000000000000000foo: 23 bar: !include bar.yaml baz: 42 yaml-0.8.20/test/resources/accent/0000755000000000000000000000000013001717724015161 5ustar0000000000000000yaml-0.8.20/test/resources/accent/foo.yaml0000644000000000000000000000001213001717724016621 0ustar0000000000000000foo: true yaml-0.8.20/test/resources/loop/0000755000000000000000000000000013001717724014675 5ustar0000000000000000yaml-0.8.20/test/resources/loop/bar.yaml0000644000000000000000000000003613001717724016324 0ustar0000000000000000one: 1 two: !include foo.yaml yaml-0.8.20/test/resources/loop/foo.yaml0000644000000000000000000000004713001717724016345 0ustar0000000000000000foo: 23 bar: !include bar.yaml baz: 42 yaml-0.8.20/Text/0000755000000000000000000000000013001717724011657 5ustar0000000000000000yaml-0.8.20/Text/Libyaml.hs0000644000000000000000000005425013001717724013612 0ustar0000000000000000{-# LANGUAGE EmptyDataDecls #-} {-# LANGUAGE ForeignFunctionInterface #-} {-# LANGUAGE DeriveDataTypeable #-} {-# LANGUAGE FlexibleContexts #-} {-# LANGUAGE FlexibleInstances #-} {-# LANGUAGE MultiParamTypeClasses #-} {-# LANGUAGE RankNTypes #-} {-# LANGUAGE CPP #-} {-# LANGUAGE TypeFamilies #-} -- | Low-level, streaming YAML interface. For a higher-level interface, see -- "Data.Yaml". module Text.Libyaml ( -- * The event stream Event (..) , Style (..) , Tag (..) , AnchorName , Anchor -- * Encoding and decoding , encode , decode , encodeFile , decodeFile -- * Error handling , YamlException (..) , YamlMark (..) ) where import Prelude hiding (pi) import Data.Bits ((.|.)) import Foreign.C import Foreign.Ptr import Foreign.ForeignPtr #if MIN_VERSION_base(4,7,0) import Foreign.ForeignPtr.Unsafe #endif import Foreign.Marshal.Alloc import qualified System.Posix.Internals as Posix #if !MIN_VERSION_base(4,8,0) import Control.Applicative #endif import Control.Exception (mask_, throwIO, Exception, finally) import Control.Monad import Control.Monad.IO.Class import Control.Monad.Trans.Resource import Data.Conduit hiding (Source, Sink, Conduit) import Data.Data import Data.ByteString (ByteString, packCStringLen) import qualified Data.ByteString import qualified Data.ByteString.Char8 as B8 import qualified Data.ByteString.Internal as B import qualified Data.ByteString.Unsafe as BU data Event = EventStreamStart | EventStreamEnd | EventDocumentStart | EventDocumentEnd | EventAlias !AnchorName | EventScalar !ByteString !Tag !Style !Anchor | EventSequenceStart !Anchor | EventSequenceEnd | EventMappingStart !Anchor | EventMappingEnd deriving (Show, Eq) data Style = Any | Plain | SingleQuoted | DoubleQuoted | Literal | Folded | PlainNoTag deriving (Show, Read, Eq, Enum, Bounded, Ord, Data, Typeable) data Tag = StrTag | FloatTag | NullTag | BoolTag | SetTag | IntTag | SeqTag | MapTag | UriTag String | NoTag deriving (Show, Eq, Read, Data, Typeable) type AnchorName = String type Anchor = Maybe AnchorName tagToString :: Tag -> String tagToString StrTag = "tag:yaml.org,2002:str" tagToString FloatTag = "tag:yaml.org,2002:float" tagToString NullTag = "tag:yaml.org,2002:null" tagToString BoolTag = "tag:yaml.org,2002:bool" tagToString SetTag = "tag:yaml.org,2002:set" tagToString IntTag = "tag:yaml.org,2002:int" tagToString SeqTag = "tag:yaml.org,2002:seq" tagToString MapTag = "tag:yaml.org,2002:map" tagToString (UriTag s) = s tagToString NoTag = "" bsToTag :: ByteString -> Tag bsToTag = stringToTag . B8.unpack stringToTag :: String -> Tag stringToTag "tag:yaml.org,2002:str" = StrTag stringToTag "tag:yaml.org,2002:float" = FloatTag stringToTag "tag:yaml.org,2002:null" = NullTag stringToTag "tag:yaml.org,2002:bool" = BoolTag stringToTag "tag:yaml.org,2002:set" = SetTag stringToTag "tag:yaml.org,2002:int" = IntTag stringToTag "tag:yaml.org,2002:seq" = SeqTag stringToTag "tag:yaml.org,2002:map" = MapTag stringToTag "" = NoTag stringToTag s = UriTag s data ParserStruct type Parser = Ptr ParserStruct parserSize :: Int parserSize = 480 data EventRawStruct type EventRaw = Ptr EventRawStruct eventSize :: Int eventSize = 104 foreign import ccall unsafe "yaml_parser_initialize" c_yaml_parser_initialize :: Parser -> IO CInt foreign import ccall unsafe "yaml_parser_delete" c_yaml_parser_delete :: Parser -> IO () foreign import ccall unsafe "yaml_parser_set_input_string" c_yaml_parser_set_input_string :: Parser -> Ptr CUChar -> CULong -> IO () foreign import ccall unsafe "yaml_parser_set_input_file" c_yaml_parser_set_input_file :: Parser -> File -> IO () data FileStruct type File = Ptr FileStruct #ifdef WINDOWS foreign import ccall unsafe "_fdopen" #else foreign import ccall unsafe "fdopen" #endif c_fdopen :: CInt -> Ptr CChar -> IO File foreign import ccall unsafe "fclose" c_fclose :: File -> IO () foreign import ccall unsafe "fclose_helper" c_fclose_helper :: File -> IO () foreign import ccall unsafe "yaml_parser_parse" c_yaml_parser_parse :: Parser -> EventRaw -> IO CInt foreign import ccall unsafe "yaml_event_delete" c_yaml_event_delete :: EventRaw -> IO () foreign import ccall "get_parser_error_problem" c_get_parser_error_problem :: Parser -> IO (Ptr CUChar) foreign import ccall "get_parser_error_context" c_get_parser_error_context :: Parser -> IO (Ptr CUChar) foreign import ccall unsafe "get_parser_error_index" c_get_parser_error_index :: Parser -> IO CULong foreign import ccall unsafe "get_parser_error_line" c_get_parser_error_line :: Parser -> IO CULong foreign import ccall unsafe "get_parser_error_column" c_get_parser_error_column :: Parser -> IO CULong makeString :: MonadIO m => (a -> m (Ptr CUChar)) -> a -> m String makeString f a = do cchar <- castPtr `liftM` f a if cchar == nullPtr then return "" else liftIO $ peekCString cchar data EventType = YamlNoEvent | YamlStreamStartEvent | YamlStreamEndEvent | YamlDocumentStartEvent | YamlDocumentEndEvent | YamlAliasEvent | YamlScalarEvent | YamlSequenceStartEvent | YamlSequenceEndEvent | YamlMappingStartEvent | YamlMappingEndEvent deriving (Enum,Show) foreign import ccall unsafe "get_event_type" c_get_event_type :: EventRaw -> IO CInt foreign import ccall unsafe "get_scalar_value" c_get_scalar_value :: EventRaw -> IO (Ptr CUChar) foreign import ccall unsafe "get_scalar_length" c_get_scalar_length :: EventRaw -> IO CULong foreign import ccall unsafe "get_scalar_tag" c_get_scalar_tag :: EventRaw -> IO (Ptr CUChar) foreign import ccall unsafe "get_scalar_tag_len" c_get_scalar_tag_len :: EventRaw -> IO CULong foreign import ccall unsafe "get_scalar_style" c_get_scalar_style :: EventRaw -> IO CInt foreign import ccall unsafe "get_scalar_anchor" c_get_scalar_anchor :: EventRaw -> IO CString foreign import ccall unsafe "get_sequence_start_anchor" c_get_sequence_start_anchor :: EventRaw -> IO CString foreign import ccall unsafe "get_mapping_start_anchor" c_get_mapping_start_anchor :: EventRaw -> IO CString foreign import ccall unsafe "get_alias_anchor" c_get_alias_anchor :: EventRaw -> IO CString getEvent :: EventRaw -> IO (Maybe Event) getEvent er = do et <- c_get_event_type er case toEnum $ fromEnum et of YamlNoEvent -> return Nothing YamlStreamStartEvent -> return $ Just EventStreamStart YamlStreamEndEvent -> return $ Just EventStreamEnd YamlDocumentStartEvent -> return $ Just EventDocumentStart YamlDocumentEndEvent -> return $ Just EventDocumentEnd YamlAliasEvent -> do yanchor <- c_get_alias_anchor er anchor <- if yanchor == nullPtr then error "got YamlAliasEvent with empty anchor" else peekCString yanchor return $ Just $ EventAlias anchor YamlScalarEvent -> do yvalue <- c_get_scalar_value er ylen <- c_get_scalar_length er ytag <- c_get_scalar_tag er ytag_len <- c_get_scalar_tag_len er ystyle <- c_get_scalar_style er let ytag_len' = fromEnum ytag_len let yvalue' = castPtr yvalue let ytag' = castPtr ytag let ylen' = fromEnum ylen bs <- packCStringLen (yvalue', ylen') tagbs <- if ytag_len' == 0 then return Data.ByteString.empty else packCStringLen (ytag', ytag_len') let style = toEnum $ fromEnum ystyle yanchor <- c_get_scalar_anchor er anchor <- if yanchor == nullPtr then return Nothing else Just <$> peekCString yanchor return $ Just $ EventScalar bs (bsToTag tagbs) style anchor YamlSequenceStartEvent -> do yanchor <- c_get_sequence_start_anchor er anchor <- if yanchor == nullPtr then return Nothing else Just <$> peekCString yanchor return $ Just $ EventSequenceStart anchor YamlSequenceEndEvent -> return $ Just EventSequenceEnd YamlMappingStartEvent -> do yanchor <- c_get_mapping_start_anchor er anchor <- if yanchor == nullPtr then return Nothing else Just <$> peekCString yanchor return $ Just $ EventMappingStart anchor YamlMappingEndEvent -> return $ Just EventMappingEnd -- Emitter data EmitterStruct type Emitter = Ptr EmitterStruct emitterSize :: Int emitterSize = 432 foreign import ccall unsafe "yaml_emitter_initialize" c_yaml_emitter_initialize :: Emitter -> IO CInt foreign import ccall unsafe "yaml_emitter_delete" c_yaml_emitter_delete :: Emitter -> IO () data BufferStruct type Buffer = Ptr BufferStruct bufferSize :: Int bufferSize = 16 foreign import ccall unsafe "buffer_init" c_buffer_init :: Buffer -> IO () foreign import ccall unsafe "get_buffer_buff" c_get_buffer_buff :: Buffer -> IO (Ptr CUChar) foreign import ccall unsafe "get_buffer_used" c_get_buffer_used :: Buffer -> IO CULong foreign import ccall unsafe "my_emitter_set_output" c_my_emitter_set_output :: Emitter -> Buffer -> IO () #ifndef __NO_UNICODE__ foreign import ccall unsafe "yaml_emitter_set_unicode" c_yaml_emitter_set_unicode :: Emitter -> CInt -> IO () #endif foreign import ccall unsafe "yaml_emitter_set_output_file" c_yaml_emitter_set_output_file :: Emitter -> File -> IO () foreign import ccall unsafe "yaml_emitter_emit" c_yaml_emitter_emit :: Emitter -> EventRaw -> IO CInt foreign import ccall unsafe "yaml_stream_start_event_initialize" c_yaml_stream_start_event_initialize :: EventRaw -> CInt -> IO CInt foreign import ccall unsafe "yaml_stream_end_event_initialize" c_yaml_stream_end_event_initialize :: EventRaw -> IO CInt foreign import ccall unsafe "yaml_scalar_event_initialize" c_yaml_scalar_event_initialize :: EventRaw -> Ptr CUChar -- anchor -> Ptr CUChar -- tag -> Ptr CUChar -- value -> CInt -- length -> CInt -- plain_implicit -> CInt -- quoted_implicit -> CInt -- style -> IO CInt foreign import ccall unsafe "simple_document_start" c_simple_document_start :: EventRaw -> IO CInt foreign import ccall unsafe "yaml_document_end_event_initialize" c_yaml_document_end_event_initialize :: EventRaw -> CInt -> IO CInt foreign import ccall unsafe "yaml_sequence_start_event_initialize" c_yaml_sequence_start_event_initialize :: EventRaw -> Ptr CUChar -> Ptr CUChar -> CInt -> CInt -> IO CInt foreign import ccall unsafe "yaml_sequence_end_event_initialize" c_yaml_sequence_end_event_initialize :: EventRaw -> IO CInt foreign import ccall unsafe "yaml_mapping_start_event_initialize" c_yaml_mapping_start_event_initialize :: EventRaw -> Ptr CUChar -> Ptr CUChar -> CInt -> CInt -> IO CInt foreign import ccall unsafe "yaml_mapping_end_event_initialize" c_yaml_mapping_end_event_initialize :: EventRaw -> IO CInt foreign import ccall unsafe "yaml_alias_event_initialize" c_yaml_alias_event_initialize :: EventRaw -> Ptr CUChar -> IO CInt toEventRaw :: Event -> (EventRaw -> IO a) -> IO a toEventRaw e f = allocaBytes eventSize $ \er -> do ret <- case e of EventStreamStart -> c_yaml_stream_start_event_initialize er 0 -- YAML_ANY_ENCODING EventStreamEnd -> c_yaml_stream_end_event_initialize er EventDocumentStart -> c_simple_document_start er EventDocumentEnd -> c_yaml_document_end_event_initialize er 1 EventScalar bs thetag style0 anchor -> do BU.unsafeUseAsCStringLen bs $ \(value, len) -> do let value' = castPtr value :: Ptr CUChar len' = fromIntegral len :: CInt let thetag' = tagToString thetag withCString thetag' $ \tag' -> do let (pi, style) = case style0 of PlainNoTag -> (1, Plain) x -> (0, x) style' = toEnum $ fromEnum style tagP = castPtr tag' qi = if null thetag' then 1 else 0 case anchor of Nothing -> c_yaml_scalar_event_initialize er nullPtr -- anchor tagP -- tag value' -- value len' -- length pi -- plain_implicit qi -- quoted_implicit style' -- style Just anchor' -> withCString anchor' $ \anchorP' -> do let anchorP = castPtr anchorP' c_yaml_scalar_event_initialize er anchorP -- anchor tagP -- tag value' -- value len' -- length 0 -- plain_implicit qi -- quoted_implicit style' -- style EventSequenceStart Nothing -> c_yaml_sequence_start_event_initialize er nullPtr nullPtr 1 0 -- YAML_ANY_SEQUENCE_STYLE EventSequenceStart (Just anchor) -> withCString anchor $ \anchor' -> do let anchorP = castPtr anchor' c_yaml_sequence_start_event_initialize er anchorP nullPtr 1 0 -- YAML_ANY_SEQUENCE_STYLE EventSequenceEnd -> c_yaml_sequence_end_event_initialize er EventMappingStart Nothing -> c_yaml_mapping_start_event_initialize er nullPtr nullPtr 1 0 -- YAML_ANY_SEQUENCE_STYLE EventMappingStart (Just anchor) -> withCString anchor $ \anchor' -> do let anchorP = castPtr anchor' c_yaml_mapping_start_event_initialize er anchorP nullPtr 1 0 -- YAML_ANY_SEQUENCE_STYLE EventMappingEnd -> c_yaml_mapping_end_event_initialize er EventAlias anchor -> withCString anchor $ \anchorP' -> do let anchorP = castPtr anchorP' c_yaml_alias_event_initialize er anchorP unless (ret == 1) $ throwIO $ ToEventRawException ret f er newtype ToEventRawException = ToEventRawException CInt deriving (Show, Typeable) instance Exception ToEventRawException decode :: MonadResource m => B.ByteString #if MIN_VERSION_conduit(1, 0, 0) -> Producer m Event #else -> GSource m Event #endif decode bs | B8.null bs = return () decode bs = bracketP alloc cleanup (runParser . fst) where alloc = mask_ $ do ptr <- mallocBytes parserSize res <- c_yaml_parser_initialize ptr if res == 0 then do c_yaml_parser_delete ptr free ptr throwIO $ YamlException "Yaml out of memory" else do let (bsfptr, offset, len) = B.toForeignPtr bs let bsptrOrig = unsafeForeignPtrToPtr bsfptr let bsptr = castPtr bsptrOrig `plusPtr` offset c_yaml_parser_set_input_string ptr bsptr (fromIntegral len) return (ptr, bsfptr) cleanup (ptr, bsfptr) = do touchForeignPtr bsfptr c_yaml_parser_delete ptr free ptr -- XXX copied from GHC.IO.FD std_flags, read_flags, output_flags, write_flags :: CInt std_flags = Posix.o_NOCTTY output_flags = std_flags .|. Posix.o_CREAT .|. Posix.o_TRUNC read_flags = std_flags .|. Posix.o_RDONLY write_flags = output_flags .|. Posix.o_WRONLY -- | Open a C FILE* from a file path, using internal GHC API to work correctly -- on all platforms, even on non-ASCII filenames. The opening mode must be -- indicated via both 'rawOpenFlags' and 'openMode'. openFile :: FilePath -> CInt -> String -> IO File openFile file rawOpenFlags openMode = do fd <- liftIO $ Posix.withFilePath file $ \file' -> Posix.c_open file' rawOpenFlags 0o666 if fd /= (-1) then withCString openMode $ \openMode' -> c_fdopen fd openMode' else return nullPtr decodeFile :: MonadResource m => FilePath #if MIN_VERSION_conduit(1, 0, 0) -> Producer m Event #else -> GSource m Event #endif decodeFile file = bracketP alloc cleanup (runParser . fst) where alloc = mask_ $ do ptr <- mallocBytes parserSize res <- c_yaml_parser_initialize ptr if res == 0 then do c_yaml_parser_delete ptr free ptr throwIO $ YamlException "Yaml out of memory" else do file' <- openFile file read_flags "r" if file' == nullPtr then do c_yaml_parser_delete ptr free ptr throwIO $ YamlException $ "Yaml file not found: " ++ file else do c_yaml_parser_set_input_file ptr file' return (ptr, file') cleanup (ptr, file') = do c_fclose_helper file' c_yaml_parser_delete ptr free ptr runParser :: MonadResource m => Parser #if MIN_VERSION_conduit(1, 0, 0) -> Producer m Event #else -> GSource m Event #endif runParser parser = do e <- liftIO $ parserParseOne' parser case e of Left err -> liftIO $ throwIO err Right Nothing -> return () Right (Just ev) -> yield ev >> runParser parser parserParseOne' :: Parser -> IO (Either YamlException (Maybe Event)) parserParseOne' parser = allocaBytes eventSize $ \er -> do res <- liftIO $ c_yaml_parser_parse parser er flip finally (c_yaml_event_delete er) $ if res == 0 then do problem <- makeString c_get_parser_error_problem parser context <- makeString c_get_parser_error_context parser index <- c_get_parser_error_index parser line <- c_get_parser_error_line parser column <- c_get_parser_error_column parser let problemMark = YamlMark (fromIntegral index) (fromIntegral line) (fromIntegral column) return $ Left $ YamlParseException problem context problemMark else Right <$> getEvent er encode :: MonadResource m #if MIN_VERSION_conduit(1, 0, 0) => Consumer Event m ByteString #else => GSink Event m ByteString #endif encode = runEmitter alloc close where alloc emitter = do fbuf <- mallocForeignPtrBytes bufferSize withForeignPtr fbuf c_buffer_init withForeignPtr fbuf $ c_my_emitter_set_output emitter return fbuf close _ fbuf = withForeignPtr fbuf $ \b -> do ptr' <- c_get_buffer_buff b len <- c_get_buffer_used b fptr <- newForeignPtr_ $ castPtr ptr' return $ B.fromForeignPtr fptr 0 $ fromIntegral len encodeFile :: MonadResource m => FilePath #if MIN_VERSION_conduit(1, 0, 0) -> Consumer Event m () #else -> GInfSink Event m #endif encodeFile filePath = bracketP getFile c_fclose $ \file -> runEmitter (alloc file) (\u _ -> return u) where getFile = do file <- openFile filePath write_flags "w" if file == nullPtr then throwIO $ YamlException $ "could not open file for write: " ++ filePath else return file alloc file emitter = c_yaml_emitter_set_output_file emitter file runEmitter :: MonadResource m => (Emitter -> IO a) -- ^ alloc #if MIN_VERSION_conduit(1, 0, 0) -> (() -> a -> IO b) -- ^ close -> Consumer Event m b #else -> (u -> a -> IO b) -- ^ close -> Pipe l Event o u m b #endif runEmitter allocI closeI = bracketP alloc cleanup go where alloc = mask_ $ do emitter <- mallocBytes emitterSize res <- c_yaml_emitter_initialize emitter when (res == 0) $ throwIO $ YamlException "c_yaml_emitter_initialize failed" #ifndef __NO_UNICODE__ c_yaml_emitter_set_unicode emitter 1 #endif a <- allocI emitter return (emitter, a) cleanup (emitter, _) = do c_yaml_emitter_delete emitter free emitter go (emitter, a) = loop where #if MIN_VERSION_conduit(1, 0, 0) loop = await >>= maybe (close ()) push #else loop = awaitE >>= either close push #endif push e = do _ <- liftIO $ toEventRaw e $ c_yaml_emitter_emit emitter loop close u = liftIO $ closeI u a -- | The pointer position data YamlMark = YamlMark { yamlIndex :: Int, yamlLine :: Int, yamlColumn :: Int } deriving Show data YamlException = YamlException String -- | problem, context, index, position line, position column | YamlParseException { yamlProblem :: String, yamlContext :: String, yamlProblemMark :: YamlMark } deriving (Show, Typeable) instance Exception YamlException