git subrepo clone --branch=0.2.5 https://github.com/yaml/libyaml.git deps/libyaml

subrepo:
  subdir:   "deps/libyaml"
  merged:   "2c891fc"
upstream:
  origin:   "https://github.com/yaml/libyaml.git"
  branch:   "0.2.5"
  commit:   "2c891fc"
git-subrepo:
  version:  "0.4.6"
  origin:   "???"
  commit:   "???"

deps/libyaml/.appveyor.yml

@@ -0,0 +1,29 @@
+version: 0.2.5.{build}
+
+image:
+- Visual Studio 2015
+- Visual Studio 2013
+
+build_script:
+
+#
+# CMake based in-source build and tests using Visual Studio
+#
+
+# Use 32-bit default generator ("Visual Studio 12 2013" or "Visual Studio 14 2015")
+- cmake .
+- cmake --build . --config Release --clean-first
+- ctest -C Release
+
+#
+# Autoconf based in-source build and tests under Cygwin using gcc
+#
+
+# 32-bit cygwin build
+- C:\cygwin\bin\sh -c "export PATH=/usr/bin:/usr/local/bin:$PATH && ./bootstrap && ./configure && make && make test && make distclean"
+# 64-bit cygwin build
+- C:\cygwin64\bin\sh -c "export PATH=/usr/bin:/usr/local/bin:$PATH && ./bootstrap && ./configure && make && make test && make distclean"
+# 32-bit mingw-w64 build
+- C:\cygwin\bin\sh -c "export PATH=/usr/bin:/usr/local/bin:$PATH && ./bootstrap && ./configure --host=i686-w64-mingw32 --target=i686-w64-mingw32 && make && make test && make distclean"
+# 64-bit mingw-w64 build
+- C:\cygwin64\bin\sh -c "export PATH=/usr/bin:/usr/local/bin:$PATH && ./bootstrap && ./configure --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 && make && make test && make distclean"

deps/libyaml/.github/workflows/main.yml

@@ -0,0 +1,59 @@
+name: linux/mac
+
+on:
+  push:
+    branches: [ '*' ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        compiler:
+        - gcc
+        - clang
+        os:
+        - ubuntu-latest
+        - macOS-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - run: env | sort
+    - name: Install software
+      run: |
+        if [[ '${{ matrix.os }}' == macOS-latest ]]; then
+          brew install automake bash coreutils make
+          echo ::add-path::/usr/local/opt/coreutils/libexec/gnubin
+          echo ::add-path::/usr/local/opt/make/libexec/gnubin
+        fi
+    - name: Fetch branches
+      run: |
+        git config remote.origin.fetch +refs/heads/*:refs/remotes/origin/*
+        git fetch --unshallow
+
+    - run: ./bootstrap
+    - run: ./configure
+    - run: make
+    - run: make test-all
+
+    - run: |
+        git clean -d -x -f
+        rm -fr tests/run-test-suite
+        git worktree prune
+
+    - name: Compiler version
+      run: ${{ matrix.compiler }} --version
+      env:
+        CC: ${{ matrix.compiler }}
+    - run: cmake .
+      env:
+        CC: ${{ matrix.compiler }}
+    - run: make
+      env:
+        CC: ${{ matrix.compiler }}
+    - run: make test

deps/libyaml/.gitignore

@@ -0,0 +1,46 @@
+*.BAK
+*.a
+*.cmake
+*.dll
+*.exe
+*.la
+*.lo
+*.log
+*.o
+*.pc
+*.so
+*.trs
+*~
+.deps/
+.libs/
+/Testing/
+/libtool
+CMakeCache.txt
+CMakeFiles/
+GNUmakefile
+Makefile
+Makefile.in
+/aclocal.m4
+/autom4te.cache
+/config
+config.h*
+/config.status
+/configure
+stamp-h1
+!config/config.h.in
+/packaging/
+/tests/run-dumper
+/tests/run-emitter
+/tests/run-emitter-test-suite
+/tests/run-loader
+/tests/run-parser
+/tests/run-parser-test-suite
+/tests/run-scanner
+/tests/example-deconstructor
+/tests/example-deconstructor-alt
+/tests/example-reformatter
+/tests/example-reformatter-alt
+/tests/run-test-suite
+/tests/test-reader
+/tests/test-version
+/dist/

deps/libyaml/.gitrepo

@@ -0,0 +1,12 @@
+; DO NOT EDIT (unless you know what you are doing)
+;
+; This subdirectory is a git "subrepo", and this file is maintained by the
+; git-subrepo command. See https://github.com/ingydotnet/git-subrepo#readme
+;
+[subrepo]
+	remote = https://github.com/yaml/libyaml.git
+	branch = 0.2.5
+	commit = 2c891fc7a770e8ba2fec34fc6b545c672beb37e6
+	parent = 6ebd51756d4760aabd093ae07e093f18641b23ba
+	method = merge
+	cmdver = 0.4.6

deps/libyaml/.indent.pro

@@ -0,0 +1 @@
+-kr -nut -nce -l250

deps/libyaml/.makefile

@@ -0,0 +1,63 @@
+# This file is used for common development targets that can be done with
+# needing the cumbersome bootstrapping process.
+#
+# You can use it like this:
+#
+#   make -f .makefile indent
+#
+# If you copy or link this file to `GNUmakefile` then you can just do:
+#
+#   make indent
+#
+# When copied to `GNUmakefile`, this file is can also be used for bootstrapping
+# Makefile targets. Since GNUmakefile is loaded before Makefile, we do the
+# bootstrapping tasks need to get a Makefile first, then we use the Makefile to
+# make our target.
+
+# Remind user when they are using GNUmakefile:
+ifeq ($(lastword $(MAKEFILE_LIST)),GNUmakefile)
+    $(info *** NOTE: GNUmakefile in use. ***)
+endif
+
+MAKE_TARGETS := \
+	all \
+	all-am \
+	all-recursive \
+	install \
+	test \
+	test-all \
+	test-suite \
+
+# SOURCE_FILES := $(shell find . | grep '\.c$$')
+SOURCE_FILES := $(shell find tests/run-test-suite | grep '\.c$$')
+ifneq ($(shell which gindent),)
+INDENT := gindent
+else
+INDENT := indent
+endif
+
+#
+# Proxy make targets:
+#
+default: all
+
+# Proxy these targets to the real Makefile, after bootstrapping is necessary.
+$(MAKE_TARGETS): Makefile
+	@make -f $< $@
+
+Makefile: Makefile.in
+	./configure
+
+Makefile.in:
+	./bootstrap
+
+#
+# Development make targets:
+#
+indent:
+	$(INDENT) $(SOURCE_FILES)
+
+distclean purge:
+	git clean -dxf -e GNUmakefile
+	rm -fr tests/run-test-suite
+	git worktree prune

deps/libyaml/.travis.yml

@@ -0,0 +1,28 @@
+language: c
+
+matrix:
+  include:
+  - os: linux
+    compiler: gcc
+    sudo: required
+  - os: linux
+    compiler: clang
+    sudo: required
+  - os: osx
+    compiler: gcc
+  - os: osx
+    compiler: clang
+
+before_install:
+
+# Travis branch-specific clone problem workaround:
+- git config remote.origin.fetch +refs/heads/*:refs/remotes/origin/*
+- git fetch
+- env | sort
+
+- if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
+    pip install --user scikit-ci-addons==0.15.0;
+    ci_addons travis/install_cmake 3.2.0;
+  fi
+
+script: tests/run-all-tests.sh

deps/libyaml/CMakeLists.txt

@@ -0,0 +1,160 @@
+
+cmake_minimum_required(VERSION 3.0)
+project (yaml C)
+
+set (YAML_VERSION_MAJOR 0)
+set (YAML_VERSION_MINOR 2)
+set (YAML_VERSION_PATCH 5)
+set (YAML_VERSION_STRING "${YAML_VERSION_MAJOR}.${YAML_VERSION_MINOR}.${YAML_VERSION_PATCH}")
+
+option(BUILD_SHARED_LIBS "Build libyaml as a shared library" OFF)
+set(YAML_STATIC_LIB_NAME "yaml" CACHE STRING "Base name of static library output")
+
+#
+# Output directories for a build tree
+#
+if(NOT DEFINED CMAKE_RUNTIME_OUTPUT_DIRECTORY)
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+endif()
+
+#
+# Install relative directories
+#
+if(NOT DEFINED INSTALL_LIB_DIR)
+  set(INSTALL_LIB_DIR lib)
+endif()
+if(NOT DEFINED INSTALL_BIN_DIR)
+  set(INSTALL_BIN_DIR bin)
+endif()
+if(NOT DEFINED INSTALL_INCLUDE_DIR)
+  set(INSTALL_INCLUDE_DIR include)
+endif()
+if(NOT DEFINED INSTALL_CMAKE_DIR)
+  set(INSTALL_CMAKE_DIR cmake)
+endif()
+
+#
+# Build library
+#
+set(SRCS
+  src/api.c
+  src/dumper.c
+  src/emitter.c
+  src/loader.c
+  src/parser.c
+  src/reader.c
+  src/scanner.c
+  src/writer.c
+  )
+
+set(config_h ${CMAKE_CURRENT_BINARY_DIR}/include/config.h)
+configure_file(
+  cmake/config.h.in
+  ${config_h}
+  )
+
+add_library(yaml ${SRCS})
+
+if(NOT BUILD_SHARED_LIBS)
+  set_target_properties(yaml
+    PROPERTIES OUTPUT_NAME ${YAML_STATIC_LIB_NAME}
+  )
+endif()
+
+set_target_properties(yaml
+  PROPERTIES DEFINE_SYMBOL YAML_DECLARE_EXPORT
+  )
+
+target_compile_definitions(yaml
+  PRIVATE HAVE_CONFIG_H
+  PUBLIC
+    $<$<NOT:$<BOOL:${BUILD_SHARED_LIBS}>>:YAML_DECLARE_STATIC>
+    $<$<BOOL:${MSVC}>:_CRT_SECURE_NO_WARNINGS>
+  )
+
+target_include_directories(yaml PUBLIC
+  $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
+  $<INSTALL_INTERFACE:${INSTALL_INCLUDE_DIR}>
+  )
+
+#
+# Install rules
+#
+install(
+  FILES
+    include/yaml.h
+  DESTINATION include COMPONENT Development
+  )
+
+install(
+  TARGETS yaml
+  EXPORT yamlTargets
+  RUNTIME DESTINATION "${INSTALL_BIN_DIR}" COMPONENT Runtime
+  LIBRARY DESTINATION "${INSTALL_LIB_DIR}" COMPONENT Development
+  ARCHIVE DESTINATION "${INSTALL_LIB_DIR}" COMPONENT Development
+  )
+
+#
+# Add tests
+#
+include(CTest) # This module defines BUILD_TESTING option
+if(BUILD_TESTING)
+  add_subdirectory(tests)
+endif()
+
+#
+# Generate 'yamlConfig.cmake', 'yamlConfigVersion.cmake' and 'yamlTargets.cmake'
+#
+include(CMakePackageConfigHelpers)
+
+# Configure 'yamlConfig.cmake' for a build tree
+set(CONFIG_DIR_CONFIG ${PROJECT_BINARY_DIR})
+set(config_file ${PROJECT_BINARY_DIR}/yamlConfig.cmake)
+configure_package_config_file(
+  yamlConfig.cmake.in
+  ${config_file}
+  INSTALL_DESTINATION ${PROJECT_BINARY_DIR}
+  PATH_VARS CONFIG_DIR_CONFIG
+  NO_CHECK_REQUIRED_COMPONENTS_MACRO
+  )
+
+# Configure 'yamlTargets.cmake' for a build tree
+export(TARGETS yaml
+  FILE ${PROJECT_BINARY_DIR}/yamlTargets.cmake
+  )
+
+# Configure and install 'yamlConfig.cmake' for an install tree
+set(CONFIG_DIR_CONFIG ${INSTALL_CMAKE_DIR})
+set(install_config_file ${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/yamlConfig.cmake )
+configure_package_config_file(
+  yamlConfig.cmake.in
+  ${install_config_file}
+  INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/${INSTALL_CMAKE_DIR}
+  PATH_VARS CONFIG_DIR_CONFIG
+  NO_CHECK_REQUIRED_COMPONENTS_MACRO
+  )
+install(
+  FILES ${install_config_file}
+  DESTINATION ${INSTALL_CMAKE_DIR} COMPONENT Development
+  )
+
+# Configure and install 'yamlTargets.cmake' for an install tree
+install(EXPORT yamlTargets
+  FILE yamlTargets.cmake
+  DESTINATION ${INSTALL_CMAKE_DIR}
+  COMPONENT Development
+  )
+
+# Configure 'yamlConfigVersion.cmake' for a build tree
+set(config_version_file ${PROJECT_BINARY_DIR}/yamlConfigVersion.cmake)
+write_basic_package_version_file(
+    ${config_version_file}
+    VERSION ${YAML_VERSION_STRING}
+    COMPATIBILITY AnyNewerVersion
+)
+# ... and install for an install tree
+install(
+  FILES ${config_version_file}
+  DESTINATION ${INSTALL_CMAKE_DIR} COMPONENT Development
+  )

deps/libyaml/Changes

@@ -0,0 +1,372 @@
+0.2.5 2020-06-01
+
+https://github.com/yaml/libyaml/pull/105
+Allow question marks in plain scalars in flow collections
+
+https://github.com/yaml/libyaml/pull/186
+Emitter: Don't output trailing space for empty scalar nodes
+
+https://github.com/yaml/libyaml/pull/185
+Emitter: Output space after an alias mapping key
+
+https://github.com/yaml/libyaml/pull/187
+Add -h and --flow (on|off|keep) to run-*-test-suite
+
+https://github.com/yaml/libyaml/pull/182
+Remove unnecessary include and malloc
+
+https://github.com/yaml/libyaml/pull/177
+Add specific files back to .gitignore
+
+https://github.com/yaml/libyaml/pull/181
+Output error position in run-parser-test-suite.c
+
+https://github.com/yaml/libyaml/pull/191
+A couple patches to improve test suite support
+
+0.2.4 2020-04-19
+
+  - https://github.com/yaml/libyaml/pull/143
+    Add packaging/docker-dist to Makefile.am
+
+  - https://github.com/yaml/libyaml/pull/174
+    Fix logic for document end before directive
+
+
+0.2.3 2020-04-11
+
+  - https://github.com/yaml/libyaml/pull/130
+    Fixed typo.
+
+  - https://github.com/yaml/libyaml/pull/144
+    Fix typo in comment
+
+  - https://github.com/yaml/libyaml/pull/140
+    Use pointer to const for strings that aren't/shouldn't be modified
+
+  - https://github.com/yaml/libyaml/pull/128
+    Squash a couple of warnings in example-deconstructor-alt
+
+  - https://github.com/yaml/libyaml/pull/151
+    Fix spelling for error message
+
+  - https://github.com/yaml/libyaml/pull/161
+    Make appveyor config be a hidden file
+
+  - https://github.com/yaml/libyaml/pull/159
+    Add CHANGES file
+
+  - https://github.com/yaml/libyaml/pull/160
+    Always output document end before directive (YAML 1.2 compatibility)
+
+  - https://github.com/yaml/libyaml/pull/162
+    Output document end marker after open ended scalars
+
+  - https://github.com/yaml/libyaml/pull/157
+    change cmake target name from libOFF.a to libyaml.a
+
+  - https://github.com/yaml/libyaml/pull/155
+    include/yaml.h: fix comments
+
+  - https://github.com/yaml/libyaml/pull/169
+    Fixed missing token in example
+
+  - https://github.com/yaml/libyaml/pull/127
+    Avoid recursion in the document loader.
+
+  - https://github.com/yaml/libyaml/pull/172
+    Support %YAML 1.2 directives
+
+  - https://github.com/yaml/libyaml/pull/66
+    Change dllexport controlling macro to use _WIN32
+
+0.2.2 2019-03-12
+
+  - https://github.com/yaml/libyaml/pull/95
+    build: do not install config.h
+
+  - https://github.com/yaml/libyaml/pull/97
+    appveyor.yml: fix Release build
+
+  - https://github.com/yaml/libyaml/pull/103
+    Remove unused code in yaml_document_delete
+
+  - https://github.com/yaml/libyaml/pull/104
+    Allow colons in plain scalars inside flow collections
+
+  - https://github.com/yaml/libyaml/pull/109
+    Fix comparison in tests/run-emitter.c
+
+  - https://github.com/yaml/libyaml/pull/117
+    Fix typo error
+
+  - https://github.com/yaml/libyaml/pull/119
+    The closing single quote needs to be indented...
+
+  - https://github.com/yaml/libyaml/pull/121
+    fix token name typos in comments
+
+  - https://github.com/yaml/libyaml/pull/122
+    Revert removing of open_ended after top level plain scalar
+
+  - https://github.com/yaml/libyaml/pull/125
+    Cherry-picks from PR 27
+
+  - https://github.com/yaml/libyaml/pull/135
+    Windows/C89 compatibility
+
+  - https://github.com/yaml/libyaml/pull/136
+    allow override of Windows static lib name
+
+0.2.1 2018-06-24
+
+  - https://github.com/yaml/libyaml/pull/10
+    Support static and dynamic libraries
+
+  - https://github.com/yaml/libyaml/pull/12
+    Use .gitignore instead of .hgignore
+
+  - https://github.com/yaml/libyaml/pull/13
+    Add support for `make test` and travis
+
+  - https://github.com/yaml/libyaml/pull/14
+    Dockerfile for testing
+
+  - https://github.com/yaml/libyaml/pull/15
+    Apply old fix for `\/` that is not in master.
+
+  - https://github.com/yaml/libyaml/pull/17
+    Update license to include all years until now.
+
+  - https://github.com/yaml/libyaml/pull/18
+    Port bug fix from Perl binding
+
+  - https://github.com/yaml/libyaml/pull/22
+    Fix misspell: preceed
+
+  - https://github.com/yaml/libyaml/pull/23
+    Removed trailing-whitespaces
+
+  - https://github.com/yaml/libyaml/pull/24
+    Fix typo
+
+  - https://github.com/yaml/libyaml/pull/25
+    added an examples directory with a few yaml examples
+
+  - https://github.com/yaml/libyaml/pull/26
+    Added missing Cflags path in pkg-config file
+
+  - https://github.com/yaml/libyaml/pull/31
+    add unit tests to cmake configuration
+
+  - https://github.com/yaml/libyaml/pull/32
+    Include an example of a custom tag from Python
+
+  - https://github.com/yaml/libyaml/pull/33
+    Include an example of a %YAML tag
+
+  - https://github.com/yaml/libyaml/pull/34
+    Added an example of using a global tag
+
+  - https://github.com/yaml/libyaml/pull/36
+    Fix -Wformat compilation errors in tests
+
+  - https://github.com/yaml/libyaml/pull/37
+    Update bug report URL in LibYAML
+
+  - https://github.com/yaml/libyaml/pull/38
+    Use AM_CPPFLAGS since autotools deprecated INCLUDE
+
+  - https://github.com/yaml/libyaml/pull/39
+    Update bug report URL in README
+
+  - https://github.com/yaml/libyaml/pull/41
+    Add travis and Makefile support for libyaml-test
+
+  - https://github.com/yaml/libyaml/pull/43
+    Add Dockerfile for Fedora 25
+
+  - https://github.com/yaml/libyaml/pull/44
+    WIP: Enable all warnings (-Wall) in libyaml and tests
+
+  - https://github.com/yaml/libyaml/pull/45
+    Fix typo
+
+  - https://github.com/yaml/libyaml/pull/47
+    Move travis script guts to separate file
+
+  - https://github.com/yaml/libyaml/pull/48
+    `yaml/libyaml-test` should become part of `yaml/libyaml`
+
+  - https://github.com/yaml/libyaml/pull/50
+    Add a GNUMakefile for immediate make targets
+
+  - https://github.com/yaml/libyaml/pull/53
+    Switch from test blacklist to whitelist
+
+  - https://github.com/yaml/libyaml/pull/55
+    Update defs for MingGW support on Windows
+
+  - https://github.com/yaml/libyaml/pull/58
+    Improve CMakeLists
+
+  - https://github.com/yaml/libyaml/pull/64
+    README: Update libyaml link
+
+  - https://github.com/yaml/libyaml/pull/69
+    Skip 5 tests in libyaml-emitter.list
+
+  - https://github.com/yaml/libyaml/pull/74
+    Forbid escaped singlequote in doublequotes
+
+  - https://github.com/yaml/libyaml/pull/76
+    Rewrite make test-suite
+
+  - https://github.com/yaml/libyaml/pull/77
+    Undefined PTRDIFF_MAX on HP-UX
+
+  - https://github.com/yaml/libyaml/pull/78
+    Fixed most compiler warnings -Wall -Wextra
+
+  - https://github.com/yaml/libyaml/pull/82
+    Move yaml-test-suite integration onto a separate branch.
+
+  - https://github.com/yaml/libyaml/pull/86
+    Fix problems in CI failures (travis and semaphore)
+
+  - https://github.com/yaml/libyaml/pull/87
+    appveyor.yml: add mingw-w64 builds
+
+  - https://github.com/yaml/libyaml/pull/88
+    add -no-undefined to src/Makefile.am
+
+  - https://github.com/yaml/libyaml/pull/89
+    Added alpine linux testing to dockerfiles
+
+  - https://github.com/yaml/libyaml/pull/93
+    remove need for PTRDIFF_MAX
+
+  - https://github.com/yaml/libyaml/pull/94
+    .gitignore: major cleanup
+
+  - https://github.com/yaml/libyaml/pull/120
+    Fix doc.
+
+0.1.7 2016-08-27
+
+  - Fixed segfault in yaml_string_write_handler.
+
+  - Fixed invalid simple key assertion.
+
+  - Fixed error handling in some examples (thank to Mathias Svensson).
+
+  - Removed obsolete VS project files.
+
+0.1.6 2014-03-26
+
+  - https://github.com/yaml/libyaml/commit/d1003a9
+    Fixed heap overflow in yaml_parser_scan_uri_escapes (Thanks
+    Ivan Fratric of the Google Security Team).
+
+  - https://github.com/yaml/libyaml/commit/662f4be
+    Added tag 0.1.5 for changeset a5142b24428b
+
+0.1.5 2014-02-03
+
+  - https://github.com/yaml/libyaml/commit/303b455
+    Manually define PTRDIFF_MAX for VS C compiler.
+
+  - https://github.com/yaml/libyaml/commit/1ef1171
+    Forgot to set the error state.
+
+  - https://github.com/yaml/libyaml/commit/c9479c7
+    Limit input size to SIZE_MAX/2.
+
+  - https://github.com/yaml/libyaml/commit/c201bf6
+    Guard against overflows in indent and flow_level.
+
+  - https://github.com/yaml/libyaml/commit/bb8ab82
+    Added .hgignore.
+
+  - https://github.com/yaml/libyaml/commit/2d94fc5
+    Prevent node index overflow (Reported by Florian Weimer).
+
+  - https://github.com/yaml/libyaml/commit/df33f25
+    Bumped the version number.
+
+  - https://github.com/yaml/libyaml/commit/f56726b
+    Fixed invalid size_t->int cast (Thank to Florian Weimer).
+
+  - https://github.com/yaml/libyaml/commit/01e8dad
+    Added a basic CMake project.
+
+  - https://github.com/yaml/libyaml/commit/f54fc40
+    Added tag 0.1.4 for changeset 3e6507fa0c26
+
+0.1.4 2012-12-24
+
+  - Fixed a bug that prevented an empty mapping being used as a simple key
+    (thank to spitzak(at)rhythm(dot)com).
+
+  - Fixed pointer overflow when calculating the position of a potential
+    simple key (thank to ppelletier(at)oblong(dot)com).
+
+  - Fixed yaml.dll not exporting any symbols
+    (thank to pxn11432(at)nifty(dot)com).
+
+  - Added pkg-config support (thank to rainwoodman(at)gmail(dot)com).
+
+0.1.3 2009-08-29
+
+  - This release fixes non-standard structure initialization and
+    a streaming-related issue.
+
+0.1.2 2008-12-27
+
+  - Minor bugfix release
+
+0.1.1 2006-08-01
+
+  - https://github.com/yaml/libyaml/commit/5e52c31
+    Fixed a problem when the DOCUMENT-END event is not emitted until
+    the beginning of the next document is available. Fixed #51.
+    Thanks edward(at)sweetbytes.net for the bug report.
+
+  - https://github.com/yaml/libyaml/commit/dd71484
+    Add project files for Visual Studio 2003.
+
+  - https://github.com/yaml/libyaml/commit/ce8a93e
+    Fix the example_deconstructor project.
+
+  - https://github.com/yaml/libyaml/commit/c9b74de
+    Eliminate some warnings and add more doxygen definitions.
+
+  - https://github.com/yaml/libyaml/commit/0122490
+    Undefine the NDEBUG directive for the test programs.
+
+  - https://github.com/yaml/libyaml/commit/071329a
+    Fix a bug in the emitter introduced while fixing warnings for VC6.
+
+  - https://github.com/yaml/libyaml/commit/6f6bbb8
+    Add VC6 projects for the test executables.
+
+  - https://github.com/yaml/libyaml/commit/0174ed6
+    Add win32 fixes and project files for VC6.
+
+  - https://github.com/yaml/libyaml/commit/e27a3c8
+    Add functions for constructing, parsing and emitting YAML documents.
+
+  - https://github.com/yaml/libyaml/commit/a907bf8
+    Add `const` qualifier for `yaml_parser_set_input_string` parameter `input`.
+
+  - https://github.com/yaml/libyaml/commit/c83b67a
+    Force a new line at the end of the input stream even if there
+    are no a new line character. This fixes a nasty bug when libyaml hangs on
+    documents like `[[[[`. Thanks ciaranm for reporting the bug.
+
+  - https://github.com/yaml/libyaml/commit/609cce0
+    Older versions of gcc do not know about -Wno-pointer-sign.
+
+0.0.1 2006-08-01
+
+  - Initial release

deps/libyaml/License

@@ -0,0 +1,20 @@
+Copyright (c) 2017-2020 Ingy döt Net
+Copyright (c) 2006-2016 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.

deps/libyaml/Makefile.am

@@ -0,0 +1,54 @@
+## Run `./bootstrap` to generate the "Makefile.in" files in this directory and
+## the "$SUBDIRS" subdirectories.
+
+SUBDIRS = include src . tests
+
+EXTRA_DIST = Changes ReadMe.md License CMakeLists.txt doc/doxygen.cfg
+
+LIBYAML_TEST_SUITE_RUN_REPO_DEFAULT := https://github.com/yaml/libyaml
+LIBYAML_TEST_SUITE_RUN_REPO ?= $(LIBYAML_TEST_SUITE_RUN_REPO_DEFAULT)
+LIBYAML_TEST_SUITE_RUN_BRANCH ?= run-test-suite
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = yaml-0.1.pc
+
+maintainer-clean-local:
+	rm -f aclocal.m4 config.h.in configure config/*
+	-find ${builddir} -name Makefile.in -exec rm -f '{}' ';'
+
+distclean-local:
+	rm -fr tests/run-test-suite packaging
+	-git worktree prune
+
+.PHONY: bootstrap
+bootstrap: maintainer-clean
+	./bootstrap
+	./configure
+	make
+
+test: all
+	make -C tests check-TESTS
+
+test-suite: tests/run-test-suite all
+	make -C $< test
+
+test-all: test test-suite
+
+tests/run-test-suite:
+ifeq ($(LIBYAML_TEST_SUITE_RUN_REPO),$(LIBYAML_TEST_SUITE_RUN_REPO_DEFAULT))
+	  -git branch --track $(LIBYAML_TEST_SUITE_RUN_BRANCH) origin/$(LIBYAML_TEST_SUITE_RUN_BRANCH)
+	  -git worktree prune
+	  git worktree add $@ $(LIBYAML_TEST_SUITE_RUN_BRANCH)
+    else
+	  git clone --branch $(LIBYAML_TEST_SUITE_RUN_BRANCH) $(LIBYAML_TEST_SUITE_RUN_REPO) $@
+    endif
+
+packaging:
+	-git branch --track $@ origin/$@
+	git worktree add --force $@ $@
+
+docker-dist: packaging
+	make -C $</docker libyaml-dist
+
+docker-test-pyyaml: packaging
+	make -C $</docker test-pyyaml

deps/libyaml/ReadMe.md

@@ -0,0 +1,46 @@
+## LibYAML - A C library for parsing and emitting YAML.
+
+To build and install the library, run:
+
+    $ ./configure
+    $ make
+    # make install
+
+Required packages:
+
+- gcc
+- libtool
+- make
+
+If you checked the source code from the Git repository, run
+
+    $ ./bootstrap
+    $ ./configure
+    $ make
+    # make install
+
+Required packages:
+
+- autoconf
+- libtool
+- make
+
+For more information, check the [LibYAML
+homepage](https://github.com/yaml/libyaml).
+
+Discuss LibYAML with the maintainers in IRC #libyaml irc.freenode.net.
+
+You may also use the [YAML-Core mailing
+list](http://lists.sourceforge.net/lists/listinfo/yaml-core).
+
+Submit bug reports and feature requests to the [LibYAML bug
+tracker](https://github.com/yaml/libyaml/issues/new).
+
+This project was developed for Python Software Foundation as a part of Google
+Summer of Code under the mentorship of Clark Evans.
+
+The LibYAML module was written by Kirill Simonov <xi@resolvent.net>.
+It is currently maintained by the YAML community.
+
+LibYAML is released under the MIT license.
+See the file LICENSE for more details.

deps/libyaml/announcement.msg

@@ -0,0 +1,89 @@
+From: Tina Müller <post@tinita.de>
+To: yaml-core@lists.sourceforge.net
+Subject: [ANN] LibYAML-0.2.5: A new release
+
+=========================
+ Announcing LibYAML-0.2.5
+=========================
+
+A new release of LibYAML is now available:
+https://github.com/yaml/libyaml/tree/0.2.5
+
+The LibYAML project is now maintained by the YAML community. Planning happens
+on the #yaml-dev and #libyaml IRC channels on irc.freenode.net.
+
+
+Changes
+=======
+
+
+https://github.com/yaml/libyaml/pull/187
+Add -h and --flow (on|off|keep) to run-*-test-suite
+
+https://github.com/yaml/libyaml/pull/182
+Remove unnecessary include and malloc
+
+https://github.com/yaml/libyaml/pull/177
+Add specific files back to .gitignore
+
+https://github.com/yaml/libyaml/pull/181
+Output error position in run-parser-test-suite.c
+
+https://github.com/yaml/libyaml/pull/105
+Allow question marks in plain scalars in flow collections
+
+https://github.com/yaml/libyaml/pull/186
+Emitter: Don't output trailing space for empty scalar nodes
+
+https://github.com/yaml/libyaml/pull/185
+Emitter: Output space after an alias mapping key
+
+https://github.com/yaml/libyaml/pull/191
+A couple patches to improve test suite support
+
+
+Resources
+=========
+
+LibYAML IRC Channel:  #libyaml on irc.freenode.net
+LibYAML homepage:     https://github.com/yaml/libyaml
+Source download:      https://github.com/yaml/libyaml/archive/dist-0.2.3.zip
+GitHub repository:    https://github.com/yaml/libyaml
+Bug tracking:          https://github.com/yaml/libyaml/issues
+
+YAML homepage: http://yaml.org/
+YAML-core mailing list: http://lists.sourceforge.net/lists/listinfo/yaml-core
+
+
+About LibYAML
+=============
+
+YAML is a data serialization format designed for human readability and
+interaction with scripting languages.
+
+LibYAML is a C library for parsing and emitting YAML. LibYAML is the underlying
+parser/emitter code for YAML frameworks in many programming languages.
+
+
+Maintainers
+===========
+
+The following people are responsible for maintaining LibYAML:
+
+* Ingy döt Net
+
+and many thanks to all who have contribributed!
+See: https://github.com/yaml/libyaml/pulls
+
+
+Copyright
+=========
+
+Copyright (c) 2017-2020 Ingy döt Net <ingy@ingy.net>
+Copyright (c) 2006-2016 Kirill Simonov <xi@resolvent.net>
+
+The LibYAML module was written by Kirill Simonov.
+It is currently maintained by the YAML community.
+
+LibYAML is released under the MIT license.
+See the file LICENSE for more details.

deps/libyaml/bootstrap

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec autoreconf -fvi

deps/libyaml/cmake/config.h.in

@@ -0,0 +1,4 @@
+#define YAML_VERSION_MAJOR @YAML_VERSION_MAJOR@
+#define YAML_VERSION_MINOR @YAML_VERSION_MINOR@
+#define YAML_VERSION_PATCH @YAML_VERSION_PATCH@
+#define YAML_VERSION_STRING "@YAML_VERSION_STRING@"

deps/libyaml/configure.ac

@@ -0,0 +1,73 @@
+# Run `./bootstrap` to generate the "configure" script.
+
+# Define the package version numbers and the bug reporting link.
+m4_define([YAML_MAJOR], 0)
+m4_define([YAML_MINOR], 2)
+m4_define([YAML_PATCH], 5)
+m4_define([YAML_BUGS], [https://github.com/yaml/libyaml/issues/new])
+
+# Define the libtool version numbers; check the Autobook, Section 11.4.
+# Bump the libtool version numbers using the following algorithm:
+#   if (the current interface has not been changed):
+#       YAML_REVISION += 1
+#   else:
+#       YAML_REVISION = 0
+#       YAML_CURRENT += 1
+#       if (this release is backward compatible with the previous release):
+#           YAML_AGE += 1
+#       else:
+#           YAML_AGE = 0
+m4_define([YAML_RELEASE], 0)
+m4_define([YAML_CURRENT], 2)
+m4_define([YAML_REVISION], 9)
+m4_define([YAML_AGE], 0)
+
+# Initialize autoconf & automake.
+AC_PREREQ(2.59)
+AC_INIT([yaml], [YAML_MAJOR.YAML_MINOR.YAML_PATCH], [YAML_BUGS])
+AC_CONFIG_AUX_DIR([config])
+AC_CONFIG_HEADERS([include/config.h])
+AM_INIT_AUTOMAKE([1.9 foreign])
+
+# Define macro variables for the package version numbers.
+AC_DEFINE(YAML_VERSION_MAJOR, YAML_MAJOR, [Define the major version number.])
+AC_DEFINE(YAML_VERSION_MINOR, YAML_MINOR, [Define the minor version number.])
+AC_DEFINE(YAML_VERSION_PATCH, YAML_PATCH, [Define the patch version number.])
+AC_DEFINE(YAML_VERSION_STRING, "YAML_MAJOR.YAML_MINOR.YAML_PATCH", [Define the version string.])
+
+# Define substitutions for the libtool version numbers.
+YAML_LT_RELEASE=YAML_RELEASE
+YAML_LT_CURRENT=YAML_CURRENT
+YAML_LT_REVISION=YAML_REVISION
+YAML_LT_AGE=YAML_AGE
+AC_SUBST(YAML_LT_RELEASE)
+AC_SUBST(YAML_LT_CURRENT)
+AC_SUBST(YAML_LT_REVISION)
+AC_SUBST(YAML_LT_AGE)
+
+# Note: in order to update checks, run `autoscan` and look through "configure.scan".
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+AC_PROG_LIBTOOL
+
+AC_CHECK_PROG(DOXYGEN, [doxygen], [true], [false])
+AM_CONDITIONAL(DOXYGEN, [test "$DOXYGEN" = true])
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS([stdlib.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_SIZE_T
+
+# Define Makefiles.
+AC_CONFIG_FILES([yaml-0.1.pc include/Makefile src/Makefile Makefile tests/Makefile])
+
+# Generate the "configure" script.
+AC_OUTPUT

deps/libyaml/doc/doxygen.cfg

@@ -0,0 +1,222 @@
+# Doxyfile 1.4.4
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+PROJECT_NAME           = $(PACKAGE)
+PROJECT_NUMBER         = $(VERSION)
+OUTPUT_DIRECTORY       = $(top_builddir)/doc/
+CREATE_SUBDIRS         = NO
+OUTPUT_LANGUAGE        = English
+USE_WINDOWS_ENCODING   = NO
+BRIEF_MEMBER_DESC      = YES
+REPEAT_BRIEF           = YES
+ABBREVIATE_BRIEF       = 
+ALWAYS_DETAILED_SEC    = NO
+INLINE_INHERITED_MEMB  = NO
+FULL_PATH_NAMES        = YES
+STRIP_FROM_PATH        = 
+STRIP_FROM_INC_PATH    = 
+SHORT_NAMES            = NO
+JAVADOC_AUTOBRIEF      = YES
+MULTILINE_CPP_IS_BRIEF = NO
+DETAILS_AT_TOP         = NO
+INHERIT_DOCS           = YES
+DISTRIBUTE_GROUP_DOC   = NO
+SEPARATE_MEMBER_PAGES  = NO
+TAB_SIZE               = 8
+ALIASES                = 
+OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_JAVA   = NO
+SUBGROUPING            = YES
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+EXTRACT_ALL            = NO
+EXTRACT_PRIVATE        = NO
+EXTRACT_STATIC         = NO
+EXTRACT_LOCAL_CLASSES  = NO
+EXTRACT_LOCAL_METHODS  = NO
+HIDE_UNDOC_MEMBERS     = NO
+HIDE_UNDOC_CLASSES     = NO
+HIDE_FRIEND_COMPOUNDS  = NO
+HIDE_IN_BODY_DOCS      = NO
+INTERNAL_DOCS          = NO
+CASE_SENSE_NAMES       = YES
+HIDE_SCOPE_NAMES       = NO
+SHOW_INCLUDE_FILES     = YES
+INLINE_INFO            = YES
+SORT_MEMBER_DOCS       = NO
+SORT_BRIEF_DOCS        = NO
+SORT_BY_SCOPE_NAME     = NO
+GENERATE_TODOLIST      = YES
+GENERATE_TESTLIST      = YES
+GENERATE_BUGLIST       = YES
+GENERATE_DEPRECATEDLIST= YES
+ENABLED_SECTIONS       = 
+MAX_INITIALIZER_LINES  = 30
+SHOW_USED_FILES        = YES
+SHOW_DIRECTORIES       = YES
+FILE_VERSION_FILTER    = 
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+QUIET                  = NO
+WARNINGS               = YES
+WARN_IF_UNDOCUMENTED   = YES
+WARN_IF_DOC_ERROR      = YES
+WARN_NO_PARAMDOC       = NO
+WARN_FORMAT            = "$file:$line: $text"
+WARN_LOGFILE           = 
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+INPUT                  = $(top_srcdir)/include/
+FILE_PATTERNS          = *.h
+RECURSIVE              = YES
+EXCLUDE                = 
+EXCLUDE_SYMLINKS       = NO
+EXCLUDE_PATTERNS       = 
+EXAMPLE_PATH           = 
+EXAMPLE_PATTERNS       = 
+EXAMPLE_RECURSIVE      = NO
+IMAGE_PATH             = 
+INPUT_FILTER           = 
+FILTER_PATTERNS        = 
+FILTER_SOURCE_FILES    = NO
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+SOURCE_BROWSER         = NO
+INLINE_SOURCES         = NO
+STRIP_CODE_COMMENTS    = YES
+REFERENCED_BY_RELATION = NO
+REFERENCES_RELATION    = NO
+USE_HTAGS              = NO
+VERBATIM_HEADERS       = NO
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+ALPHABETICAL_INDEX     = NO
+COLS_IN_ALPHA_INDEX    = 5
+IGNORE_PREFIX          = 
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+GENERATE_HTML          = YES
+HTML_OUTPUT            = html
+HTML_FILE_EXTENSION    = .html
+HTML_HEADER            = 
+HTML_FOOTER            = 
+HTML_STYLESHEET        = 
+HTML_ALIGN_MEMBERS     = YES
+GENERATE_HTMLHELP      = NO
+CHM_FILE               = 
+HHC_LOCATION           = 
+GENERATE_CHI           = NO
+BINARY_TOC             = NO
+TOC_EXPAND             = NO
+DISABLE_INDEX          = NO
+ENUM_VALUES_PER_LINE   = 1
+GENERATE_TREEVIEW      = NO
+TREEVIEW_WIDTH         = 250
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+GENERATE_LATEX         = NO
+LATEX_OUTPUT           = latex
+LATEX_CMD_NAME         = latex
+MAKEINDEX_CMD_NAME     = makeindex
+COMPACT_LATEX          = NO
+PAPER_TYPE             = a4wide
+EXTRA_PACKAGES         = 
+LATEX_HEADER           = 
+PDF_HYPERLINKS         = NO
+USE_PDFLATEX           = NO
+LATEX_BATCHMODE        = NO
+LATEX_HIDE_INDICES     = NO
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+GENERATE_RTF           = NO
+RTF_OUTPUT             = rtf
+COMPACT_RTF            = NO
+RTF_HYPERLINKS         = NO
+RTF_STYLESHEET_FILE    = 
+RTF_EXTENSIONS_FILE    = 
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+GENERATE_MAN           = NO
+MAN_OUTPUT             = man
+MAN_EXTENSION          = .3
+MAN_LINKS              = NO
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+GENERATE_XML           = NO
+XML_OUTPUT             = xml
+XML_SCHEMA             = 
+XML_DTD                = 
+XML_PROGRAMLISTING     = YES
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+GENERATE_AUTOGEN_DEF   = NO
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+GENERATE_PERLMOD       = NO
+PERLMOD_LATEX          = NO
+PERLMOD_PRETTY         = YES
+PERLMOD_MAKEVAR_PREFIX = 
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor   
+#---------------------------------------------------------------------------
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = YES
+EXPAND_ONLY_PREDEF     = YES
+SEARCH_INCLUDES        = YES
+INCLUDE_PATH           = 
+INCLUDE_FILE_PATTERNS  = 
+PREDEFINED             = "YAML_DECLARE(type)=type"
+EXPAND_AS_DEFINED      = 
+SKIP_FUNCTION_MACROS   = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references   
+#---------------------------------------------------------------------------
+TAGFILES               = 
+GENERATE_TAGFILE       = 
+ALLEXTERNALS           = NO
+EXTERNAL_GROUPS        = YES
+PERL_PATH              = /usr/bin/perl
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool   
+#---------------------------------------------------------------------------
+CLASS_DIAGRAMS         = NO
+HIDE_UNDOC_RELATIONS   = YES
+HAVE_DOT               = NO
+CLASS_GRAPH            = YES
+COLLABORATION_GRAPH    = YES
+GROUP_GRAPHS           = YES
+UML_LOOK               = NO
+TEMPLATE_RELATIONS     = NO
+INCLUDE_GRAPH          = YES
+INCLUDED_BY_GRAPH      = YES
+CALL_GRAPH             = NO
+GRAPHICAL_HIERARCHY    = YES
+DIRECTORY_GRAPH        = YES
+DOT_IMAGE_FORMAT       = png
+DOT_PATH               = 
+DOTFILE_DIRS           = 
+MAX_DOT_GRAPH_WIDTH    = 1024
+MAX_DOT_GRAPH_HEIGHT   = 1024
+MAX_DOT_GRAPH_DEPTH    = 0
+DOT_TRANSPARENT        = NO
+DOT_MULTI_TARGETS      = NO
+GENERATE_LEGEND        = YES
+DOT_CLEANUP            = YES
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine   
+#---------------------------------------------------------------------------
+SEARCHENGINE           = NO

deps/libyaml/docker/README.mkd

@@ -0,0 +1,17 @@
+# LibYAML Dockerfiles
+
+This directory is a collection of dockerfiles that can be used when developing 
+and testing LibYAML.
+
+The current list is supports:
+
+- Ubuntu 16.04
+- Ubuntu 14.04
+
+## Example Usage
+
+```bash
+$ docker pull ubuntu
+$ docker build -t libyaml-ubuntu:16.04 -f dockerfiles/ubuntu-16.04 .
+$ docker run -it libyaml-ubuntu:16.04 make test
+```

deps/libyaml/docker/alpine-3.7

@@ -0,0 +1,26 @@
+# vim: ft=dockerfile
+FROM alpine:3.7
+MAINTAINER Ingy döt Net <ingy@ingy.net>
+
+RUN apk update && \
+    apk add --no-cache \
+        autoconf \
+        automake \
+        build-base \
+	cmake \
+        git \
+        libtool \
+	perl-dev && \
+    mkdir /libyaml
+
+COPY . /libyaml/
+WORKDIR /libyaml
+
+ENV LD_LIBRARY_PATH=/libyaml/src/.libs
+
+RUN ./bootstrap && \
+    ./configure && \
+    make && \
+    make install
+
+CMD ["bash"]

deps/libyaml/docker/fedora-25

@@ -0,0 +1,26 @@
+# vim: ft=dockerfile
+FROM fedora:25
+MAINTAINER Ian Cordasco <graffatcolmingov@gmail.com>
+
+# NOTE(sigmavirus24): We need "perl-core" here for the "prove" binary
+# required by the test-all Makefile target
+RUN dnf install -y \
+        automake \
+        gcc \
+        git \
+        make \
+        libtool \
+        perl-core && \
+    mkdir /libyaml
+
+COPY . /libyaml/
+WORKDIR /libyaml
+
+ENV LD_LIBRARY_PATH=/libyaml/src/.libs
+
+RUN ./bootstrap && \
+    ./configure && \
+    make && \
+    make install
+
+CMD ["bash"]

deps/libyaml/docker/ubuntu-14.04

@@ -0,0 +1,29 @@
+# vim: ft=dockerfile
+FROM ubuntu:14.04
+MAINTAINER Ian Cordasco <graffatcolmingov@gmail.com>
+
+RUN apt-get update && \
+    apt-get install -y \
+        software-properties-common \
+        python-software-properties && \
+    add-apt-repository ppa:git-core/ppa && \
+    apt-get update && \
+    apt-get install -y \
+        autoconf \
+        build-essential \
+        git \
+        libtool && \
+    rm -rf /var/lib/apt/lists/* && \
+    mkdir /libyaml
+
+COPY . /libyaml/
+WORKDIR /libyaml
+
+ENV LD_LIBRARY_PATH=/libyaml/src/.libs
+
+RUN ./bootstrap && \
+    ./configure && \
+    make && \
+    make install
+
+CMD ["bash"]

deps/libyaml/docker/ubuntu-16.04

@@ -0,0 +1,24 @@
+# vim: ft=dockerfile
+FROM ubuntu:16.04
+MAINTAINER Ian Cordasco <graffatcolmingov@gmail.com>
+
+RUN apt-get update && \
+    apt-get install -y \
+        autoconf \
+        build-essential \
+        git \
+        libtool && \
+    rm -rf /var/lib/apt/lists/* && \
+    mkdir /libyaml
+
+COPY . /libyaml/
+WORKDIR /libyaml
+
+ENV LD_LIBRARY_PATH=/libyaml/src/.libs
+
+RUN ./bootstrap && \
+    ./configure && \
+    make && \
+    make install
+
+CMD ["bash"]

deps/libyaml/examples/anchors.yaml

@@ -0,0 +1,10 @@
+base: &base
+    name: Everyone has same name
+
+foo: &foo
+    <<: *base
+    age: 10
+
+bar: &bar
+    <<: *base
+    age: 20

deps/libyaml/examples/array.yaml

@@ -0,0 +1,2 @@
+- member
+- member2

deps/libyaml/examples/global-tag.yaml

@@ -0,0 +1,14 @@
+%TAG ! tag:clarkevans.com,2002:
+--- !shape
+  # Use the ! handle for presenting
+  # tag:clarkevans.com,2002:circle
+- !circle
+  center: &ORIGIN {x: 73, y: 129}
+  radius: 7
+- !line
+  start: *ORIGIN
+  finish: { x: 89, y: 102 }
+- !label
+  start: *ORIGIN
+  color: 0xFFEEBB
+  text: Pretty vector drawing.

deps/libyaml/examples/json.yaml

@@ -0,0 +1 @@
+{"key": ["value", 3]}

deps/libyaml/examples/mapping.yaml

@@ -0,0 +1,2 @@
+key: value
+other-key: other-value

deps/libyaml/examples/numbers.yaml

@@ -0,0 +1 @@
+[100, 12.5, -130, 1.3e+9]

deps/libyaml/examples/strings.yaml

@@ -0,0 +1,7 @@
+unqouted: string
+literal-block: |
+    This entire block of text will be the value of the 'literal-block' key,
+    with line breaks being preserved.
+folded: >
+    This entire block of text will be the value of 'folded', but this
+    time, all newlines will be replaced with a single space.

deps/libyaml/examples/tags.yaml

@@ -0,0 +1,7 @@
+gif_file: !!binary |
+    R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5
+    OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+
+    +f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC
+    AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs=
+explicit_string: !!str 0.5
+python_tag: !!python/complex '1.0+2.0j'

deps/libyaml/examples/yaml-version.yaml

@@ -0,0 +1,3 @@
+%YAML 1.1
+---
+[1, 2, 3]

deps/libyaml/include/Makefile.am

@@ -0,0 +1,17 @@
+AM_CPPFLAGS = yaml.h
+DOXYGEN_CFG = $(top_srcdir)/doc/doxygen.cfg
+
+nobase_include_HEADERS = $(AM_CPPFLAGS)
+
+if DOXYGEN
+
+html: $(AM_CPPFLAGS) $(DOXYGEN_CFG)
+	PACKAGE=$(PACKAGE) VERSION=$(VERSION) top_srcdir=$(top_srcdir) top_builddir=$(top_builddir) doxygen $(DOXYGEN_CFG)
+
+endif
+
+maintainer-clean-local:
+	-rm -rf $(top_builddir)/doc/html
+
+dist-hook: html
+	cp -a $(top_builddir)/doc/html $(top_distdir)/doc

deps/libyaml/regression-inputs/clusterfuzz-testcase-minimized-5607885063061504.yml

@@ -0,0 +1 @@
+"(\

deps/libyaml/src/Makefile.am

@@ -0,0 +1,4 @@
+AM_CPPFLAGS = -I$(top_srcdir)/include -Wall
+lib_LTLIBRARIES = libyaml.la
+libyaml_la_SOURCES = yaml_private.h api.c reader.c scanner.c parser.c loader.c writer.c emitter.c dumper.c
+libyaml_la_LDFLAGS = -no-undefined -release $(YAML_LT_RELEASE) -version-info $(YAML_LT_CURRENT):$(YAML_LT_REVISION):$(YAML_LT_AGE)

deps/libyaml/src/dumper.c

@@ -0,0 +1,394 @@
+
+#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_anchors_t*)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(SHIM(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;
+}
+

deps/libyaml/src/loader.c

@@ -0,0 +1,544 @@
+
+#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);
+
+/*
+ * Document loading context.
+ */
+struct loader_ctx {
+    int *start;
+    int *end;
+    int *top;
+};
+
+/*
+ * Composer functions.
+ */
+static int
+yaml_parser_load_nodes(yaml_parser_t *parser, struct loader_ctx *ctx);
+
+static int
+yaml_parser_load_document(yaml_parser_t *parser, yaml_event_t *event);
+
+static int
+yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx);
+
+static int
+yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx);
+
+static int
+yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx);
+
+static int
+yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx);
+
+static int
+yaml_parser_load_sequence_end(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx);
+
+static int
+yaml_parser_load_mapping_end(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx);
+
+/*
+ * 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, yaml_node_t*))
+        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, yaml_alias_data_t*))
+        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 *event)
+{
+    struct loader_ctx ctx = { NULL, NULL, NULL };
+
+    assert(event->type == YAML_DOCUMENT_START_EVENT);
+                        /* DOCUMENT-START is expected. */
+
+    parser->document->version_directive
+        = event->data.document_start.version_directive;
+    parser->document->tag_directives.start
+        = event->data.document_start.tag_directives.start;
+    parser->document->tag_directives.end
+        = event->data.document_start.tag_directives.end;
+    parser->document->start_implicit
+        = event->data.document_start.implicit;
+    parser->document->start_mark = event->start_mark;
+
+    if (!STACK_INIT(parser, ctx, int*)) return 0;
+    if (!yaml_parser_load_nodes(parser, &ctx)) {
+        STACK_DEL(parser, ctx);
+        return 0;
+    }
+    STACK_DEL(parser, ctx);
+
+    return 1;
+}
+
+/*
+ * Compose a node tree.
+ */
+
+static int
+yaml_parser_load_nodes(yaml_parser_t *parser, struct loader_ctx *ctx)
+{
+    yaml_event_t event;
+
+    do {
+        if (!yaml_parser_parse(parser, &event)) return 0;
+
+        switch (event.type) {
+            case YAML_ALIAS_EVENT:
+                if (!yaml_parser_load_alias(parser, &event, ctx)) return 0;
+                break;
+            case YAML_SCALAR_EVENT:
+                if (!yaml_parser_load_scalar(parser, &event, ctx)) return 0;
+                break;
+            case YAML_SEQUENCE_START_EVENT:
+                if (!yaml_parser_load_sequence(parser, &event, ctx)) return 0;
+                break;
+            case YAML_SEQUENCE_END_EVENT:
+                if (!yaml_parser_load_sequence_end(parser, &event, ctx))
+                    return 0;
+                break;
+            case YAML_MAPPING_START_EVENT:
+                if (!yaml_parser_load_mapping(parser, &event, ctx)) return 0;
+                break;
+            case YAML_MAPPING_END_EVENT:
+                if (!yaml_parser_load_mapping_end(parser, &event, ctx))
+                    return 0;
+                break;
+            default:
+                assert(0);  /* Could not happen. */
+                return 0;
+            case YAML_DOCUMENT_END_EVENT:
+                break;
+        }
+    } while (event.type != YAML_DOCUMENT_END_EVENT);
+
+    parser->document->end_implicit = event.data.document_end.implicit;
+    parser->document->end_mark = event.end_mark;
+
+    return 1;
+}
+
+/*
+ * 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 occurrence",
+                    alias_data->mark, "second occurrence", data.mark);
+        }
+    }
+
+    if (!PUSH(parser, parser->aliases, data)) {
+        yaml_free(anchor);
+        return 0;
+    }
+
+    return 1;
+}
+
+/*
+ * Compose node into its parent in the stree.
+ */
+
+static int
+yaml_parser_load_node_add(yaml_parser_t *parser, struct loader_ctx *ctx,
+        int index)
+{
+    struct yaml_node_s *parent;
+    int parent_index;
+
+    if (STACK_EMPTY(parser, *ctx)) {
+        /* This is the root node, there's no tree to add it to. */
+        return 1;
+    }
+
+    parent_index = *((*ctx).top - 1);
+    parent = &parser->document->nodes.start[parent_index-1];
+
+    switch (parent->type) {
+        case YAML_SEQUENCE_NODE:
+            if (!STACK_LIMIT(parser, parent->data.sequence.items, INT_MAX-1))
+                return 0;
+            if (!PUSH(parser, parent->data.sequence.items, index))
+                return 0;
+            break;
+        case YAML_MAPPING_NODE: {
+            yaml_node_pair_t pair;
+            if (!STACK_EMPTY(parser, parent->data.mapping.pairs)) {
+                yaml_node_pair_t *p = parent->data.mapping.pairs.top - 1;
+                if (p->key != 0 && p->value == 0) {
+                    p->value = index;
+                    break;
+                }
+            }
+
+            pair.key = index;
+            pair.value = 0;
+            if (!STACK_LIMIT(parser, parent->data.mapping.pairs, INT_MAX-1))
+                return 0;
+            if (!PUSH(parser, parent->data.mapping.pairs, pair))
+                return 0;
+
+            break;
+        }
+        default:
+            assert(0); /* Could not happen. */
+            return 0;
+    }
+    return 1;
+}
+
+/*
+ * Compose a node corresponding to an alias.
+ */
+
+static int
+yaml_parser_load_alias(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx)
+{
+    yaml_char_t *anchor = 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 yaml_parser_load_node_add(parser, ctx, alias_data->index);
+        }
+    }
+
+    yaml_free(anchor);
+    return yaml_parser_set_composer_error(parser, "found undefined alias",
+            event->start_mark);
+}
+
+/*
+ * Compose a scalar node.
+ */
+
+static int
+yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx)
+{
+    yaml_node_t node;
+    int index;
+    yaml_char_t *tag = 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, event->data.scalar.value,
+            event->data.scalar.length, event->data.scalar.style,
+            event->start_mark, 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,
+                event->data.scalar.anchor)) return 0;
+
+    return yaml_parser_load_node_add(parser, ctx, index);
+
+error:
+    yaml_free(tag);
+    yaml_free(event->data.scalar.anchor);
+    yaml_free(event->data.scalar.value);
+    return 0;
+}
+
+/*
+ * Compose a sequence node.
+ */
+
+static int
+yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx)
+{
+    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;
+    yaml_char_t *tag = 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, yaml_node_item_t*)) goto error;
+
+    SEQUENCE_NODE_INIT(node, tag, items.start, items.end,
+            event->data.sequence_start.style,
+            event->start_mark, 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,
+                event->data.sequence_start.anchor)) return 0;
+
+    if (!yaml_parser_load_node_add(parser, ctx, index)) return 0;
+
+    if (!STACK_LIMIT(parser, *ctx, INT_MAX-1)) return 0;
+    if (!PUSH(parser, *ctx, index)) return 0;
+
+    return 1;
+
+error:
+    yaml_free(tag);
+    yaml_free(event->data.sequence_start.anchor);
+    return 0;
+}
+
+static int
+yaml_parser_load_sequence_end(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx)
+{
+    int index;
+
+    assert(((*ctx).top - (*ctx).start) > 0);
+
+    index = *((*ctx).top - 1);
+    assert(parser->document->nodes.start[index-1].type == YAML_SEQUENCE_NODE);
+    parser->document->nodes.start[index-1].end_mark = event->end_mark;
+
+    (void)POP(parser, *ctx);
+
+    return 1;
+}
+
+/*
+ * Compose a mapping node.
+ */
+
+static int
+yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx)
+{
+    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_char_t *tag = 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, yaml_node_pair_t*)) goto error;
+
+    MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end,
+            event->data.mapping_start.style,
+            event->start_mark, 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,
+                event->data.mapping_start.anchor)) return 0;
+
+    if (!yaml_parser_load_node_add(parser, ctx, index)) return 0;
+
+    if (!STACK_LIMIT(parser, *ctx, INT_MAX-1)) return 0;
+    if (!PUSH(parser, *ctx, index)) return 0;
+
+    return 1;
+
+error:
+    yaml_free(tag);
+    yaml_free(event->data.mapping_start.anchor);
+    return 0;
+}
+
+static int
+yaml_parser_load_mapping_end(yaml_parser_t *parser, yaml_event_t *event,
+        struct loader_ctx *ctx)
+{
+    int index;
+
+    assert(((*ctx).top - (*ctx).start) > 0);
+
+    index = *((*ctx).top - 1);
+    assert(parser->document->nodes.start[index-1].type == YAML_MAPPING_NODE);
+    parser->document->nodes.start[index-1].end_mark = event->end_mark;
+
+    (void)POP(parser, *ctx);
+
+    return 1;
+}

deps/libyaml/src/reader.c

@@ -0,0 +1,469 @@
+
+#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 >= MAX_FILE_SIZE) {
+        return yaml_parser_set_reader_error(parser, "input is too long",
+            parser->offset, -1);
+    }
+
+    return 1;
+}

deps/libyaml/src/writer.c

@@ -0,0 +1,141 @@
+
+#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");
+    }
+}
+

deps/libyaml/src/yaml_private.h

@@ -0,0 +1,684 @@
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <yaml.h>
+
+#include <assert.h>
+#include <limits.h>
+#include <stddef.h>
+
+/*
+ * 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 maximum size of a YAML input file.
+ * This used to be PTRDIFF_MAX, but that's not entirely portable
+ * because stdint.h isn't available on all platforms.
+ * It is not entirely clear why this isn't the maximum value
+ * that can fit into the parser->offset field.
+ */
+
+#define MAX_FILE_SIZE (~(size_t)0 / 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_char_t *)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,type)                                     \
+  (((stack).start = (type)yaml_malloc(INITIAL_STACK_SIZE*sizeof(*(stack).start))) ? \
+        ((stack).top = (stack).start,                                           \
+         (stack).end = (stack).start+INITIAL_STACK_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,type)                                     \
+  (((queue).start = (type)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))
+
+/* Strict C compiler warning helpers */
+
+#if defined(__clang__) || defined(__GNUC__)
+#  define HASATTRIBUTE_UNUSED
+#endif
+#ifdef HASATTRIBUTE_UNUSED
+#  define __attribute__unused__             __attribute__((__unused__))
+#else
+#  define __attribute__unused__
+#endif
+
+/* Shim arguments are arguments that must be included in your function,
+ * but serve no purpose inside.  Silence compiler warnings. */
+#define SHIM(a) /*@unused@*/ a __attribute__unused__
+
+/* UNUSED_PARAM() marks a shim argument in the body to silence compiler warnings */
+#ifdef __clang__
+#  define UNUSED_PARAM(a) (void)(a);
+#else
+#  define UNUSED_PARAM(a) /*@-noeffect*/if (0) (void)(a)/*@=noeffect*/;
+#endif
+
+#define YAML_MALLOC_STATIC(type) (type*)yaml_malloc(sizeof(type))
+#define YAML_MALLOC(size)        (yaml_char_t *)yaml_malloc(size)

deps/libyaml/tests/CMakeLists.txt

@@ -0,0 +1,27 @@
+
+function(add_yaml_executable name)
+  add_executable(${name} ${name}.c)
+  target_link_libraries(${name} yaml)
+endfunction()
+
+foreach(name IN ITEMS
+  example-deconstructor
+  example-deconstructor-alt
+  example-reformatter
+  example-reformatter-alt
+  run-dumper
+  run-emitter
+  run-emitter-test-suite
+  run-loader
+  run-parser
+  run-parser-test-suite
+  run-scanner
+  test-reader
+  test-version
+  )
+  add_yaml_executable(${name})
+endforeach()
+
+add_test(NAME version COMMAND test-version)
+add_test(NAME reader COMMAND test-reader)
+

deps/libyaml/tests/Makefile.am

@@ -0,0 +1,9 @@
+AM_CPPFLAGS = -I$(top_srcdir)/include -Wall
+#AM_CFLAGS = -Wno-pointer-sign
+LDADD = $(top_builddir)/src/libyaml.la
+TESTS = test-version test-reader
+check_PROGRAMS = test-version test-reader
+noinst_PROGRAMS = run-scanner run-parser run-loader run-emitter run-dumper	\
+				  example-reformatter example-reformatter-alt	\
+				  example-deconstructor example-deconstructor-alt \
+				  run-parser-test-suite run-emitter-test-suite

deps/libyaml/tests/ReadMe.md

@@ -0,0 +1,63 @@
+# Testing the Parser and Emitter
+
+There are several programs to test the parser and emitter.
+
+## Parser
+
+    echo 'foo: bar' | ./tests/run-parser-test-suite
+
+This will output the parsing events in yaml-test-suite format:
+
+    +STR
+    +DOC
+    +MAP
+    =VAL :foo
+    =VAL :bar
+    -MAP
+    -DOC
+    -STR
+
+For flow style events, you have to enable it with the `--flow` option:
+
+    echo '{ foo: bar }' | ./tests/run-parser-test-suite --flow keep
+
+    ...
+    +MAP {}
+    ...
+
+In the future, this will be the default.
+
+You can also explicitly disable this style with `--flow off`, or output
+flow style always, with `--flow on`.
+
+## Emitter
+
+run-emitter-test-suite takes yaml-test-suite event format and emits YAML.
+
+    ./tests/run-parser-test-suite ... | ./tests/run-emitter-test-suite
+
+## Options
+
+* `--directive (1.1|1.2)`
+
+  Prints a version directive before every document.
+
+* `--flow on`
+
+  Will emit the whole document in flow style.
+
+* `--flow off`
+
+  Will emit the whole document in block style.
+
+* `--flow keep`
+
+  Will emit block/flow style like in the original document.
+
+Example:
+```
+% echo 'foo: [bar, {x: y}]' |
+  ./tests/run-parser-test-suite --flow keep |
+  ./tests/run-emitter-test-suite --flow keep
+foo: [bar, {x: y}]
+```

deps/libyaml/tests/example-deconstructor-alt.c

@@ -0,0 +1,800 @@
+
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+    int help = 0;
+    int canonical = 0;
+    int unicode = 0;
+    int k;
+    int done = 0;
+
+    yaml_parser_t parser;
+    yaml_emitter_t emitter;
+    yaml_event_t input_event;
+    yaml_document_t output_document;
+
+    int root;
+
+    /* Clear the objects. */
+
+    memset(&parser, 0, sizeof(parser));
+    memset(&emitter, 0, sizeof(emitter));
+    memset(&input_event, 0, sizeof(input_event));
+    memset(&output_document, 0, sizeof(output_document));
+
+    /* Analyze command line options. */
+
+    for (k = 1; k < argc; k ++)
+    {
+        if (strcmp(argv[k], "-h") == 0
+                || strcmp(argv[k], "--help") == 0) {
+            help = 1;
+        }
+
+        else if (strcmp(argv[k], "-c") == 0
+                || strcmp(argv[k], "--canonical") == 0) {
+            canonical = 1;
+        }
+
+        else if (strcmp(argv[k], "-u") == 0
+                || strcmp(argv[k], "--unicode") == 0) {
+            unicode = 1;
+        }
+
+        else {
+            fprintf(stderr, "Unrecognized option: %s\n"
+                    "Try `%s --help` for more information.\n",
+                    argv[k], argv[0]);
+            return 1;
+        }
+    }
+
+    /* Display the help string. */
+
+    if (help)
+    {
+        printf("%s <input\n"
+                "or\n%s -h | --help\nDeconstruct a YAML stream\n\nOptions:\n"
+                "-h, --help\t\tdisplay this help and exit\n"
+                "-c, --canonical\t\toutput in the canonical YAML format\n"
+                "-u, --unicode\t\toutput unescaped non-ASCII characters\n",
+                argv[0], argv[0]);
+        return 0;
+    }
+
+    /* Initialize the parser and emitter objects. */
+
+    if (!yaml_parser_initialize(&parser)) {
+        fprintf(stderr, "Could not initialize the parser object\n");
+        return 1;
+    }
+
+    if (!yaml_emitter_initialize(&emitter)) {
+        yaml_parser_delete(&parser);
+        fprintf(stderr, "Could not inialize the emitter object\n");
+        return 1;
+    }
+
+    /* Set the parser parameters. */
+
+    yaml_parser_set_input_file(&parser, stdin);
+
+    /* Set the emitter parameters. */
+
+    yaml_emitter_set_output_file(&emitter, stdout);
+
+    yaml_emitter_set_canonical(&emitter, canonical);
+    yaml_emitter_set_unicode(&emitter, unicode);
+
+    /* Create and emit the STREAM-START event. */
+
+    if (!yaml_emitter_open(&emitter))
+        goto emitter_error;
+
+    /* Create a output_document object. */
+
+    if (!yaml_document_initialize(&output_document, NULL, NULL, NULL, 0, 0))
+        goto document_error;
+
+    /* Create the root sequence. */
+
+    root = yaml_document_add_sequence(&output_document, NULL,
+            YAML_BLOCK_SEQUENCE_STYLE);
+    if (!root) goto document_error;
+
+    /* Loop through the input events. */
+
+    while (!done)
+    {
+        int properties, key, value, map, seq;
+
+        /* Get the next event. */
+
+        if (!yaml_parser_parse(&parser, &input_event))
+            goto parser_error;
+
+        /* Check if this is the stream end. */
+
+        if (input_event.type == YAML_STREAM_END_EVENT) {
+            done = 1;
+        }
+
+        /* Create a mapping node and attach it to the root sequence. */
+
+        properties = yaml_document_add_mapping(&output_document, NULL,
+                YAML_BLOCK_MAPPING_STYLE);
+        if (!properties) goto document_error;
+        if (!yaml_document_append_sequence_item(&output_document,
+                    root, properties)) goto document_error;
+
+        /* Analyze the event. */
+
+        switch (input_event.type)
+        {
+            case YAML_STREAM_START_EVENT:
+
+                /* Add 'type': 'STREAM-START'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"STREAM-START", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Add 'encoding': <encoding>. */
+
+                if (input_event.data.stream_start.encoding)
+                {
+                    yaml_encoding_t encoding
+                        = input_event.data.stream_start.encoding;
+
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"encoding", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            (yaml_char_t *)(encoding == YAML_UTF8_ENCODING ? "utf-8" :
+                             encoding == YAML_UTF16LE_ENCODING ? "utf-16-le" :
+                             encoding == YAML_UTF16BE_ENCODING ? "utf-16-be" :
+                             "unknown"), -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+                    
+                break;
+
+            case YAML_STREAM_END_EVENT:
+
+                /* Add 'type': 'STREAM-END'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"STREAM-END", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                break;
+
+            case YAML_DOCUMENT_START_EVENT:
+
+                /* Add 'type': 'DOCUMENT-START'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"DOCUMENT-START", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Display the output_document version numbers. */
+
+                if (input_event.data.document_start.version_directive)
+                {
+                    yaml_version_directive_t *version
+                        = input_event.data.document_start.version_directive;
+                    char number[64];
+
+                    /* Add 'version': {}. */
+                    
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"version", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    map = yaml_document_add_mapping(&output_document, NULL,
+                            YAML_FLOW_MAPPING_STYLE);
+                    if (!map) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, map)) goto document_error;
+
+                    /* Add 'major': <number>. */
+
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"major", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    sprintf(number, "%d", version->major);
+                    value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_INT_TAG,
+                        (yaml_char_t *)number, -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                map, key, value)) goto document_error;
+
+                    /* Add 'minor': <number>. */
+
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"minor", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    sprintf(number, "%d", version->minor);
+                    value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_INT_TAG,
+                        (yaml_char_t *)number, -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                map, key, value)) goto document_error;
+                }
+
+                /* Display the output_document tag directives. */
+
+                if (input_event.data.document_start.tag_directives.start
+                        != input_event.data.document_start.tag_directives.end)
+                {
+                    yaml_tag_directive_t *tag;
+
+                    /* Add 'tags': []. */
+                    
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"tags", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    seq = yaml_document_add_sequence(&output_document, NULL,
+                            YAML_BLOCK_SEQUENCE_STYLE);
+                    if (!seq) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, seq)) goto document_error;
+
+                    for (tag = input_event.data.document_start.tag_directives.start;
+                            tag != input_event.data.document_start.tag_directives.end;
+                            tag ++)
+                    {
+                        /* Add {}. */
+
+                        map = yaml_document_add_mapping(&output_document, NULL,
+                                YAML_FLOW_MAPPING_STYLE);
+                        if (!map) goto document_error;
+                        if (!yaml_document_append_sequence_item(&output_document,
+                                    seq, map)) goto document_error;
+
+                        /* Add 'handle': <handle>. */
+
+                        key = yaml_document_add_scalar(&output_document, NULL,
+                            (yaml_char_t *)"handle", -1, YAML_PLAIN_SCALAR_STYLE);
+                        if (!key) goto document_error;
+                        value = yaml_document_add_scalar(&output_document, NULL,
+                            tag->handle, -1, YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                        if (!value) goto document_error;
+                        if (!yaml_document_append_mapping_pair(&output_document,
+                                    map, key, value)) goto document_error;
+
+                        /* Add 'prefix': <prefix>. */
+
+                        key = yaml_document_add_scalar(&output_document, NULL,
+                            (yaml_char_t *)"prefix", -1, YAML_PLAIN_SCALAR_STYLE);
+                        if (!key) goto document_error;
+                        value = yaml_document_add_scalar(&output_document, NULL,
+                            tag->prefix, -1, YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                        if (!value) goto document_error;
+                        if (!yaml_document_append_mapping_pair(&output_document,
+                                    map, key, value)) goto document_error;
+                    }
+                }
+
+                /* Add 'implicit': <flag>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"implicit", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_BOOL_TAG,
+                        (yaml_char_t *)(input_event.data.document_start.implicit ?
+                         "true" : "false"), -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                break;
+
+            case YAML_DOCUMENT_END_EVENT:
+
+                /* Add 'type': 'DOCUMENT-END'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"DOCUMENT-END", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Add 'implicit': <flag>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"implicit", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_BOOL_TAG,
+                        (yaml_char_t *)(input_event.data.document_end.implicit ?
+                         "true" : "false"), -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                break;
+
+            case YAML_ALIAS_EVENT:
+
+                /* Add 'type': 'ALIAS'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"ALIAS", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Add 'anchor': <anchor>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"anchor", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                        input_event.data.alias.anchor, -1,
+                        YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                break;
+
+            case YAML_SCALAR_EVENT:
+
+                /* Add 'type': 'SCALAR'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"SCALAR", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Add 'anchor': <anchor>. */
+
+                if (input_event.data.scalar.anchor)
+                {
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"anchor", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            input_event.data.scalar.anchor, -1,
+                            YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                /* Add 'tag': <tag>. */
+
+                if (input_event.data.scalar.tag)
+                {
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"tag", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            input_event.data.scalar.tag, -1,
+                            YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                /* Add 'value': <value>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"value", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                        input_event.data.scalar.value,
+                        input_event.data.scalar.length,
+                        YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Display if the scalar tag is implicit. */
+
+                /* Add 'implicit': {} */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"version", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                map = yaml_document_add_mapping(&output_document, NULL,
+                        YAML_FLOW_MAPPING_STYLE);
+                if (!map) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, map)) goto document_error;
+
+                /* Add 'plain': <flag>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"plain", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_BOOL_TAG,
+                        (yaml_char_t *)(input_event.data.scalar.plain_implicit ?
+                         "true" : "false"), -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            map, key, value)) goto document_error;
+
+                /* Add 'quoted': <flag>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"quoted", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_BOOL_TAG,
+                        (yaml_char_t *)(input_event.data.scalar.quoted_implicit ?
+                         "true" : "false"), -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            map, key, value)) goto document_error;
+
+                /* Display the style information. */
+
+                if (input_event.data.scalar.style)
+                {
+                    yaml_scalar_style_t style = input_event.data.scalar.style;
+
+                    /* Add 'style': <style>. */
+
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"style", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            (yaml_char_t *)(style == YAML_PLAIN_SCALAR_STYLE ? "plain" :
+                             style == YAML_SINGLE_QUOTED_SCALAR_STYLE ?
+                                    "single-quoted" :
+                             style == YAML_DOUBLE_QUOTED_SCALAR_STYLE ?
+                                    "double-quoted" :
+                             style == YAML_LITERAL_SCALAR_STYLE ? "literal" :
+                             style == YAML_FOLDED_SCALAR_STYLE ? "folded" :
+                             "unknown"), -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                break;
+
+            case YAML_SEQUENCE_START_EVENT:
+
+                /* Add 'type': 'SEQUENCE-START'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"SEQUENCE-START", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Add 'anchor': <anchor>. */
+
+                if (input_event.data.sequence_start.anchor)
+                {
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"anchor", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            input_event.data.sequence_start.anchor, -1,
+                            YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                /* Add 'tag': <tag>. */
+
+                if (input_event.data.sequence_start.tag)
+                {
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"tag", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            input_event.data.sequence_start.tag, -1,
+                            YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                /* Add 'implicit': <flag>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"implicit", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_BOOL_TAG,
+                        (yaml_char_t *)(input_event.data.sequence_start.implicit ?
+                         "true" : "false"), -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Display the style information. */
+
+                if (input_event.data.sequence_start.style)
+                {
+                    yaml_sequence_style_t style
+                        = input_event.data.sequence_start.style;
+
+                    /* Add 'style': <style>. */
+
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"style", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            (yaml_char_t *)(style == YAML_BLOCK_SEQUENCE_STYLE ? "block" :
+                             style == YAML_FLOW_SEQUENCE_STYLE ? "flow" :
+                             "unknown"), -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                break;
+
+            case YAML_SEQUENCE_END_EVENT:
+
+                /* Add 'type': 'SEQUENCE-END'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"SEQUENCE-END", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                break;
+
+            case YAML_MAPPING_START_EVENT:
+
+                /* Add 'type': 'MAPPING-START'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"MAPPING-START", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Add 'anchor': <anchor>. */
+
+                if (input_event.data.mapping_start.anchor)
+                {
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"anchor", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            input_event.data.mapping_start.anchor, -1,
+                            YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                /* Add 'tag': <tag>. */
+
+                if (input_event.data.mapping_start.tag)
+                {
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"tag", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            input_event.data.mapping_start.tag, -1,
+                            YAML_DOUBLE_QUOTED_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                /* Add 'implicit': <flag>. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"implicit", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, (yaml_char_t *)YAML_BOOL_TAG,
+                        (yaml_char_t *)(input_event.data.mapping_start.implicit ?
+                         "true" : "false"), -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                /* Display the style information. */
+
+                if (input_event.data.mapping_start.style)
+                {
+                    yaml_mapping_style_t style
+                        = input_event.data.mapping_start.style;
+
+                    /* Add 'style': <style>. */
+
+                    key = yaml_document_add_scalar(&output_document, NULL,
+                        (yaml_char_t *)"style", -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!key) goto document_error;
+                    value = yaml_document_add_scalar(&output_document, NULL,
+                            (yaml_char_t *)(style == YAML_BLOCK_MAPPING_STYLE ? "block" :
+                             style == YAML_FLOW_MAPPING_STYLE ? "flow" :
+                             "unknown"), -1, YAML_PLAIN_SCALAR_STYLE);
+                    if (!value) goto document_error;
+                    if (!yaml_document_append_mapping_pair(&output_document,
+                                properties, key, value)) goto document_error;
+                }
+
+                break;
+
+            case YAML_MAPPING_END_EVENT:
+
+                /* Add 'type': 'MAPPING-END'. */
+
+                key = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"type", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!key) goto document_error;
+                value = yaml_document_add_scalar(&output_document, NULL,
+                    (yaml_char_t *)"MAPPING-END", -1, YAML_PLAIN_SCALAR_STYLE);
+                if (!value) goto document_error;
+                if (!yaml_document_append_mapping_pair(&output_document,
+                            properties, key, value)) goto document_error;
+
+                break;
+
+            default:
+                /* It couldn't really happen. */
+                break;
+        }
+
+        /* Delete the event object. */
+
+        yaml_event_delete(&input_event);
+    }
+
+    if (!yaml_emitter_dump(&emitter, &output_document))
+        goto emitter_error;
+    if (!yaml_emitter_close(&emitter))
+        goto emitter_error;
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 0;
+
+parser_error:
+
+    /* Display a parser error message. */
+
+    switch (parser.error)
+    {
+        case YAML_MEMORY_ERROR:
+            fprintf(stderr, "Memory error: Not enough memory for parsing\n");
+            break;
+
+        case YAML_READER_ERROR:
+            if (parser.problem_value != -1) {
+                fprintf(stderr, "Reader error: %s: #%X at %zd\n", parser.problem,
+                        parser.problem_value, parser.problem_offset);
+            }
+            else {
+                fprintf(stderr, "Reader error: %s at %zd\n", parser.problem,
+                        parser.problem_offset);
+            }
+            break;
+
+        case YAML_SCANNER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Scanner error: %s at line %lu, column %lu\n"
+                        "%s at line %lu, column %lu\n", parser.context,
+                        parser.context_mark.line+1, parser.context_mark.column+1,
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Scanner error: %s at line %lu, column %lu\n",
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            break;
+
+        case YAML_PARSER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Parser error: %s at line %lu, column %lu\n"
+                        "%s at line %lu, column %lu\n", parser.context,
+                        parser.context_mark.line+1, parser.context_mark.column+1,
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Parser error: %s at line %lu, column %lu\n",
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            break;
+
+        default:
+            /* Couldn't happen. */
+            fprintf(stderr, "Internal error\n");
+            break;
+    }
+
+    yaml_event_delete(&input_event);
+    yaml_document_delete(&output_document);
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+
+emitter_error:
+
+    /* Display an emitter error message. */
+
+    switch (emitter.error)
+    {
+        case YAML_MEMORY_ERROR:
+            fprintf(stderr, "Memory error: Not enough memory for emitting\n");
+            break;
+
+        case YAML_WRITER_ERROR:
+            fprintf(stderr, "Writer error: %s\n", emitter.problem);
+            break;
+
+        case YAML_EMITTER_ERROR:
+            fprintf(stderr, "Emitter error: %s\n", emitter.problem);
+            break;
+
+        default:
+            /* Couldn't happen. */
+            fprintf(stderr, "Internal error\n");
+            break;
+    }
+
+    yaml_event_delete(&input_event);
+    yaml_document_delete(&output_document);
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+
+document_error:
+
+    fprintf(stderr, "Memory error: Not enough memory for creating a document\n");
+
+    yaml_event_delete(&input_event);
+    yaml_document_delete(&output_document);
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+}
+

deps/libyaml/tests/example-reformatter-alt.c

@@ -0,0 +1,217 @@
+
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+    int help = 0;
+    int canonical = 0;
+    int unicode = 0;
+    int k;
+    int done = 0;
+
+    yaml_parser_t parser;
+    yaml_emitter_t emitter;
+    yaml_document_t document;
+
+    /* Clear the objects. */
+
+    memset(&parser, 0, sizeof(parser));
+    memset(&emitter, 0, sizeof(emitter));
+    memset(&document, 0, sizeof(document));
+
+    /* Analyze command line options. */
+
+    for (k = 1; k < argc; k ++)
+    {
+        if (strcmp(argv[k], "-h") == 0
+                || strcmp(argv[k], "--help") == 0) {
+            help = 1;
+        }
+
+        else if (strcmp(argv[k], "-c") == 0
+                || strcmp(argv[k], "--canonical") == 0) {
+            canonical = 1;
+        }
+
+        else if (strcmp(argv[k], "-u") == 0
+                || strcmp(argv[k], "--unicode") == 0) {
+            unicode = 1;
+        }
+
+        else {
+            fprintf(stderr, "Unrecognized option: %s\n"
+                    "Try `%s --help` for more information.\n",
+                    argv[k], argv[0]);
+            return 1;
+        }
+    }
+
+    /* Display the help string. */
+
+    if (help)
+    {
+        printf("%s [--canonical] [--unicode] <input >output\n"
+                "or\n%s -h | --help\nReformat a YAML stream\n\nOptions:\n"
+                "-h, --help\t\tdisplay this help and exit\n"
+                "-c, --canonical\t\toutput in the canonical YAML format\n"
+                "-u, --unicode\t\toutput unescaped non-ASCII characters\n",
+                argv[0], argv[0]);
+        return 0;
+    }
+
+    /* Initialize the parser and emitter objects. */
+
+    if (!yaml_parser_initialize(&parser))
+        goto parser_error;
+
+    if (!yaml_emitter_initialize(&emitter))
+        goto emitter_error;
+
+    /* Set the parser parameters. */
+
+    yaml_parser_set_input_file(&parser, stdin);
+
+    /* Set the emitter parameters. */
+
+    yaml_emitter_set_output_file(&emitter, stdout);
+
+    yaml_emitter_set_canonical(&emitter, canonical);
+    yaml_emitter_set_unicode(&emitter, unicode);
+
+    /* The main loop. */
+
+    while (!done)
+    {
+        /* Get the next event. */
+
+        if (!yaml_parser_load(&parser, &document))
+            goto parser_error;
+
+        /* Check if this is the stream end. */
+
+        if (!yaml_document_get_root_node(&document)) {
+            done = 1;
+        }
+
+        /* Emit the event. */
+
+        if (!yaml_emitter_dump(&emitter, &document))
+            goto emitter_error;
+    }
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 0;
+
+parser_error:
+
+    /* Display a parser error message. */
+
+    switch (parser.error)
+    {
+        case YAML_MEMORY_ERROR:
+            fprintf(stderr, "Memory error: Not enough memory for parsing\n");
+            break;
+
+        case YAML_READER_ERROR:
+            if (parser.problem_value != -1) {
+                fprintf(stderr, "Reader error: %s: #%X at %zd\n", parser.problem,
+                        parser.problem_value, parser.problem_offset);
+            }
+            else {
+                fprintf(stderr, "Reader error: %s at %lu\n", parser.problem,
+                        parser.problem_offset);
+            }
+            break;
+
+        case YAML_SCANNER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Scanner error: %s at line %lu, column %lu\n"
+                        "%s at line %lu, column %lu\n", parser.context,
+                        parser.context_mark.line+1, parser.context_mark.column+1,
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Scanner error: %s at line %lu, column %lu\n",
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            break;
+
+        case YAML_PARSER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Parser error: %s at line %lu, column %lu\n"
+                        "%s at line %lu, column %lu\n", parser.context,
+                        parser.context_mark.line+1, parser.context_mark.column+1,
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Parser error: %s at line %lu, column %lu\n",
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            break;
+
+        case YAML_COMPOSER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Composer error: %s at line %lu, column %lu\n"
+                        "%s at line %lu, column %lu\n", parser.context,
+                        parser.context_mark.line+1, parser.context_mark.column+1,
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Composer error: %s at line %lu, column %lu\n",
+                        parser.problem, parser.problem_mark.line+1,
+                        parser.problem_mark.column+1);
+            }
+            break;
+
+        default:
+            /* Couldn't happen. */
+            fprintf(stderr, "Internal error\n");
+            break;
+    }
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+
+emitter_error:
+
+    /* Display an emitter error message. */
+
+    switch (emitter.error)
+    {
+        case YAML_MEMORY_ERROR:
+            fprintf(stderr, "Memory error: Not enough memory for emitting\n");
+            break;
+
+        case YAML_WRITER_ERROR:
+            fprintf(stderr, "Writer error: %s\n", emitter.problem);
+            break;
+
+        case YAML_EMITTER_ERROR:
+            fprintf(stderr, "Emitter error: %s\n", emitter.problem);
+            break;
+
+        default:
+            /* Couldn't happen. */
+            fprintf(stderr, "Internal error\n");
+            break;
+    }
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+}
+

deps/libyaml/tests/example-reformatter.c

@@ -0,0 +1,202 @@
+
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+    int help = 0;
+    int canonical = 0;
+    int unicode = 0;
+    int k;
+    int done = 0;
+
+    yaml_parser_t parser;
+    yaml_emitter_t emitter;
+    yaml_event_t event;
+
+    /* Clear the objects. */
+
+    memset(&parser, 0, sizeof(parser));
+    memset(&emitter, 0, sizeof(emitter));
+    memset(&event, 0, sizeof(event));
+
+    /* Analyze command line options. */
+
+    for (k = 1; k < argc; k ++)
+    {
+        if (strcmp(argv[k], "-h") == 0
+                || strcmp(argv[k], "--help") == 0) {
+            help = 1;
+        }
+
+        else if (strcmp(argv[k], "-c") == 0
+                || strcmp(argv[k], "--canonical") == 0) {
+            canonical = 1;
+        }
+
+        else if (strcmp(argv[k], "-u") == 0
+                || strcmp(argv[k], "--unicode") == 0) {
+            unicode = 1;
+        }
+
+        else {
+            fprintf(stderr, "Unrecognized option: %s\n"
+                    "Try `%s --help` for more information.\n",
+                    argv[k], argv[0]);
+            return 1;
+        }
+    }
+
+    /* Display the help string. */
+
+    if (help)
+    {
+        printf("%s [--canonical] [--unicode] <input >output\n"
+                "or\n%s -h | --help\nReformat a YAML stream\n\nOptions:\n"
+                "-h, --help\t\tdisplay this help and exit\n"
+                "-c, --canonical\t\toutput in the canonical YAML format\n"
+                "-u, --unicode\t\toutput unescaped non-ASCII characters\n",
+                argv[0], argv[0]);
+        return 0;
+    }
+
+    /* Initialize the parser and emitter objects. */
+
+    if (!yaml_parser_initialize(&parser))
+        goto parser_error;
+
+    if (!yaml_emitter_initialize(&emitter))
+        goto emitter_error;
+
+    /* Set the parser parameters. */
+
+    yaml_parser_set_input_file(&parser, stdin);
+
+    /* Set the emitter parameters. */
+
+    yaml_emitter_set_output_file(&emitter, stdout);
+
+    yaml_emitter_set_canonical(&emitter, canonical);
+    yaml_emitter_set_unicode(&emitter, unicode);
+
+    /* The main loop. */
+
+    while (!done)
+    {
+        /* Get the next event. */
+
+        if (!yaml_parser_parse(&parser, &event))
+            goto parser_error;
+
+        /* Check if this is the stream end. */
+
+        if (event.type == YAML_STREAM_END_EVENT) {
+            done = 1;
+        }
+
+        /* Emit the event. */
+
+        if (!yaml_emitter_emit(&emitter, &event))
+            goto emitter_error;
+    }
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 0;
+
+parser_error:
+
+    /* Display a parser error message. */
+
+    switch (parser.error)
+    {
+        case YAML_MEMORY_ERROR:
+            fprintf(stderr, "Memory error: Not enough memory for parsing\n");
+            break;
+
+        case YAML_READER_ERROR:
+            if (parser.problem_value != -1) {
+                fprintf(stderr, "Reader error: %s: #%X at %ld\n", parser.problem,
+                        parser.problem_value, (long)parser.problem_offset);
+            }
+            else {
+                fprintf(stderr, "Reader error: %s at %ld\n", parser.problem,
+                        (long)parser.problem_offset);
+            }
+            break;
+
+        case YAML_SCANNER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Scanner error: %s at line %d, column %d\n"
+                        "%s at line %d, column %d\n", parser.context,
+                        (int)parser.context_mark.line+1, (int)parser.context_mark.column+1,
+                        parser.problem, (int)parser.problem_mark.line+1,
+                        (int)parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Scanner error: %s at line %d, column %d\n",
+                        parser.problem, (int)parser.problem_mark.line+1,
+                        (int)parser.problem_mark.column+1);
+            }
+            break;
+
+        case YAML_PARSER_ERROR:
+            if (parser.context) {
+                fprintf(stderr, "Parser error: %s at line %d, column %d\n"
+                        "%s at line %d, column %d\n", parser.context,
+                        (int)parser.context_mark.line+1, (int)parser.context_mark.column+1,
+                        parser.problem, (int)parser.problem_mark.line+1,
+                        (int)parser.problem_mark.column+1);
+            }
+            else {
+                fprintf(stderr, "Parser error: %s at line %d, column %d\n",
+                        parser.problem, (int)parser.problem_mark.line+1,
+                        (int)parser.problem_mark.column+1);
+            }
+            break;
+
+        default:
+            /* Couldn't happen. */
+            fprintf(stderr, "Internal error\n");
+            break;
+    }
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+
+emitter_error:
+
+    /* Display an emitter error message. */
+
+    switch (emitter.error)
+    {
+        case YAML_MEMORY_ERROR:
+            fprintf(stderr, "Memory error: Not enough memory for emitting\n");
+            break;
+
+        case YAML_WRITER_ERROR:
+            fprintf(stderr, "Writer error: %s\n", emitter.problem);
+            break;
+
+        case YAML_EMITTER_ERROR:
+            fprintf(stderr, "Emitter error: %s\n", emitter.problem);
+            break;
+
+        default:
+            /* Couldn't happen. */
+            fprintf(stderr, "Internal error\n");
+            break;
+    }
+
+    yaml_parser_delete(&parser);
+    yaml_emitter_delete(&emitter);
+
+    return 1;
+}
+

deps/libyaml/tests/run-all-tests.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+set -e
+
+main() {
+  # Autoconf based in-source build and tests
+  clean
+
+  ./bootstrap
+  ./configure
+  make test-all
+
+  # CMake based in-source build and tests
+  clean
+
+  cmake .
+  make
+  make test
+
+  clean
+}
+
+clean() {
+  git clean -d -x -f
+  rm -fr tests/run-test-suite
+  git worktree prune
+}
+
+main "$@"

deps/libyaml/tests/run-dumper.c

@@ -0,0 +1,314 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+#define BUFFER_SIZE 65536
+#define MAX_DOCUMENTS  16
+
+int copy_document(yaml_document_t *document_to, yaml_document_t *document_from)
+{
+    yaml_node_t *node;
+    yaml_node_item_t *item;
+    yaml_node_pair_t *pair;
+
+    if (!yaml_document_initialize(document_to, document_from->version_directive,
+                document_from->tag_directives.start,
+                document_from->tag_directives.end,
+                document_from->start_implicit, document_from->end_implicit))
+        return 0;
+
+    for (node = document_from->nodes.start;
+            node < document_from->nodes.top; node ++) {
+        switch (node->type) {
+            case YAML_SCALAR_NODE:
+                if (!yaml_document_add_scalar(document_to, node->tag,
+                            node->data.scalar.value, node->data.scalar.length,
+                            node->data.scalar.style)) goto error;
+                break;
+            case YAML_SEQUENCE_NODE:
+                if (!yaml_document_add_sequence(document_to, node->tag,
+                            node->data.sequence.style)) goto error;
+                break;
+            case YAML_MAPPING_NODE:
+                if (!yaml_document_add_mapping(document_to, node->tag,
+                            node->data.mapping.style)) goto error;
+                break;
+            default:
+                assert(0);
+                break;
+        }
+    }
+
+    for (node = document_from->nodes.start;
+            node < document_from->nodes.top; node ++) {
+        switch (node->type) {
+            case YAML_SEQUENCE_NODE:
+                for (item = node->data.sequence.items.start;
+                        item < node->data.sequence.items.top; item ++) {
+                    if (!yaml_document_append_sequence_item(document_to,
+                                node - document_from->nodes.start + 1,
+                                *item)) goto error;
+                }
+                break;
+            case YAML_MAPPING_NODE:
+                for (pair = node->data.mapping.pairs.start;
+                        pair < node->data.mapping.pairs.top; pair ++) {
+                    if (!yaml_document_append_mapping_pair(document_to,
+                                node - document_from->nodes.start + 1,
+                                pair->key, pair->value)) goto error;
+                }
+                break;
+            default:
+                break;
+        }
+    }
+    return 1;
+
+error:
+    yaml_document_delete(document_to);
+    return 0;
+}
+
+int compare_nodes(yaml_document_t *document1, int index1,
+        yaml_document_t *document2, int index2, int level)
+{
+    int k;
+    yaml_node_t *node1;
+    yaml_node_t *node2;
+    if (level++ > 1000) return 0;
+    node1 = yaml_document_get_node(document1, index1);
+    node2 = yaml_document_get_node(document2, index2);
+
+    assert(node1);
+    assert(node2);
+
+    if (node1->type != node2->type)
+        return 0;
+
+    if (strcmp((char *)node1->tag, (char *)node2->tag) != 0) return 0;
+
+    switch (node1->type) {
+        case YAML_SCALAR_NODE:
+            if (node1->data.scalar.length != node2->data.scalar.length)
+                return 0;
+            if (strncmp((char *)node1->data.scalar.value, (char *)node2->data.scalar.value,
+                        node1->data.scalar.length) != 0) return 0;
+            break;
+        case YAML_SEQUENCE_NODE:
+            if ((node1->data.sequence.items.top - node1->data.sequence.items.start) !=
+                    (node2->data.sequence.items.top - node2->data.sequence.items.start))
+                return 0;
+            for (k = 0; k < (node1->data.sequence.items.top - node1->data.sequence.items.start); k ++) {
+                if (!compare_nodes(document1, node1->data.sequence.items.start[k],
+                            document2, node2->data.sequence.items.start[k], level)) return 0;
+            }
+            break;
+        case YAML_MAPPING_NODE:
+            if ((node1->data.mapping.pairs.top - node1->data.mapping.pairs.start) !=
+                    (node2->data.mapping.pairs.top - node2->data.mapping.pairs.start))
+                return 0;
+            for (k = 0; k < (node1->data.mapping.pairs.top - node1->data.mapping.pairs.start); k ++) {
+                if (!compare_nodes(document1, node1->data.mapping.pairs.start[k].key,
+                            document2, node2->data.mapping.pairs.start[k].key, level)) return 0;
+                if (!compare_nodes(document1, node1->data.mapping.pairs.start[k].value,
+                            document2, node2->data.mapping.pairs.start[k].value, level)) return 0;
+            }
+            break;
+        default:
+            assert(0);
+            break;
+    }
+    return 1;
+}
+
+int compare_documents(yaml_document_t *document1, yaml_document_t *document2)
+{
+    int k;
+
+    if ((document1->version_directive && !document2->version_directive)
+            || (!document1->version_directive && document2->version_directive)
+            || (document1->version_directive && document2->version_directive
+                && (document1->version_directive->major != document2->version_directive->major
+                    || document1->version_directive->minor != document2->version_directive->minor)))
+        return 0;
+
+    if ((document1->tag_directives.end - document1->tag_directives.start) !=
+            (document2->tag_directives.end - document2->tag_directives.start))
+        return 0;
+    for (k = 0; k < (document1->tag_directives.end - document1->tag_directives.start); k ++) {
+        if ((strcmp((char *)document1->tag_directives.start[k].handle,
+                        (char *)document2->tag_directives.start[k].handle) != 0)
+                || (strcmp((char *)document1->tag_directives.start[k].prefix,
+                    (char *)document2->tag_directives.start[k].prefix) != 0))
+            return 0;
+    }
+
+    if ((document1->nodes.top - document1->nodes.start) !=
+            (document2->nodes.top - document2->nodes.start))
+        return 0;
+
+    if (document1->nodes.top != document1->nodes.start) {
+        if (!compare_nodes(document1, 1, document2, 1, 0))
+            return 0;
+    }
+
+    return 1;
+}
+
+int print_output(char *name, unsigned char *buffer, size_t size, int count)
+{
+    FILE *file;
+    char data[BUFFER_SIZE];
+    size_t data_size = 1;
+    size_t total_size = 0;
+    if (count >= 0) {
+        printf("FAILED (at the document #%d)\nSOURCE:\n", count+1);
+    }
+    file = fopen(name, "rb");
+    assert(file);
+    while (data_size > 0) {
+        data_size = fread(data, 1, BUFFER_SIZE, file);
+        assert(!ferror(file));
+        if (!data_size) break;
+        assert(fwrite(data, 1, data_size, stdout) == data_size);
+        total_size += data_size;
+        if (feof(file)) break;
+    }
+    fclose(file);
+    printf("#### (length: %ld)\n", (long)total_size);
+    printf("OUTPUT:\n%s#### (length: %ld)\n", buffer, (long)size);
+    return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+    int number;
+    int canonical = 0;
+    int unicode = 0;
+
+    number = 1;
+    while (number < argc) {
+        if (strcmp(argv[number], "-c") == 0) {
+            canonical = 1;
+        }
+        else if (strcmp(argv[number], "-u") == 0) {
+            unicode = 1;
+        }
+        else if (argv[number][0] == '-') {
+            printf("Unknown option: '%s'\n", argv[number]);
+            return 0;
+        }
+        if (argv[number][0] == '-') {
+            if (number < argc-1) {
+                memmove(argv+number, argv+number+1, (argc-number-1)*sizeof(char *));
+            }
+            argc --;
+        }
+        else {
+            number ++;
+        }
+    }
+
+    if (argc < 2) {
+        printf("Usage: %s [-c] [-u] file1.yaml ...\n", argv[0]);
+        return 0;
+    }
+
+    for (number = 1; number < argc; number ++)
+    {
+        FILE *file;
+        yaml_parser_t parser;
+        yaml_emitter_t emitter;
+
+        yaml_document_t document;
+        unsigned char buffer[BUFFER_SIZE+1];
+        size_t written = 0;
+        yaml_document_t documents[MAX_DOCUMENTS];
+        size_t document_number = 0;
+        int done = 0;
+        int count = 0;
+        int error = 0;
+        int k;
+        memset(buffer, 0, BUFFER_SIZE+1);
+        memset(documents, 0, MAX_DOCUMENTS*sizeof(yaml_document_t));
+
+        printf("[%d] Loading, dumping, and loading again '%s': ", number, argv[number]);
+        fflush(stdout);
+
+        file = fopen(argv[number], "rb");
+        assert(file);
+
+        assert(yaml_parser_initialize(&parser));
+        yaml_parser_set_input_file(&parser, file);
+        assert(yaml_emitter_initialize(&emitter));
+        if (canonical) {
+            yaml_emitter_set_canonical(&emitter, 1);
+        }
+        if (unicode) {
+            yaml_emitter_set_unicode(&emitter, 1);
+        }
+        yaml_emitter_set_output_string(&emitter, buffer, BUFFER_SIZE, &written);
+        yaml_emitter_open(&emitter);
+
+        while (!done)
+        {
+            if (!yaml_parser_load(&parser, &document)) {
+                error = 1;
+                break;
+            }
+
+            done = (!yaml_document_get_root_node(&document));
+            if (!done) {
+                assert(document_number < MAX_DOCUMENTS);
+                assert(copy_document(&(documents[document_number++]), &document));
+                assert(yaml_emitter_dump(&emitter, &document) || 
+                        (yaml_emitter_flush(&emitter) && print_output(argv[number], buffer, written, count)));
+                count ++;
+            }
+            else {
+                yaml_document_delete(&document);
+            }
+        }
+
+        yaml_parser_delete(&parser);
+        assert(!fclose(file));
+        yaml_emitter_close(&emitter);
+        yaml_emitter_delete(&emitter);
+
+        if (!error)
+        {
+            count = done = 0;
+            assert(yaml_parser_initialize(&parser));
+            yaml_parser_set_input_string(&parser, buffer, written);
+
+            while (!done)
+            {
+                assert(yaml_parser_load(&parser, &document) || print_output(argv[number], buffer, written, count));
+                done = (!yaml_document_get_root_node(&document));
+                if (!done) {
+                    assert(compare_documents(documents+count, &document) || print_output(argv[number], buffer, written, count));
+                    count ++;
+                }
+                yaml_document_delete(&document);
+            }
+            yaml_parser_delete(&parser);
+        }
+
+        for (k = 0; k < document_number; k ++) {
+            yaml_document_delete(documents+k);
+        }
+
+        printf("PASSED (length: %ld)\n", (long)written);
+        print_output(argv[number], buffer, written, -1);
+    }
+
+    return 0;
+}

deps/libyaml/tests/run-emitter-test-suite.c

@@ -0,0 +1,290 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include "../src/yaml_private.h"
+
+int get_line(FILE * input, char *line);
+char *get_anchor(char sigil, char *line, char *anchor);
+char *get_tag(char *line, char *tag);
+void get_value(char *line, char *value, int *style);
+int usage(int ret);
+
+int main(int argc, char *argv[])
+{
+    FILE *input;
+    yaml_emitter_t emitter;
+    yaml_event_t event;
+    yaml_version_directive_t *version_directive = NULL;
+
+    int canonical = 0;
+    int unicode = 0;
+    char line[1024];
+    int foundfile = 0;
+    int i = 0;
+    int minor = 0;
+    int flow = -1; /** default no flow style collections */
+
+    for (i = 1; i < argc; i++) {
+        if (strncmp(argv[i], "--help", 6) == 0)
+            return usage(0);
+        if (strncmp(argv[i], "-h", 2) == 0)
+            return usage(0);
+        if (strncmp(argv[i], "--flow", 6) == 0) {
+            if (i+1 == argc)
+                return usage(1);
+            i++;
+            if (strncmp(argv[i], "keep", 4) == 0)
+                flow = 0;
+            else if (strncmp(argv[i], "on", 2) == 0)
+                flow = 1;
+            else if (strncmp(argv[i], "off", 3) == 0)
+                flow = -1;
+            else
+                return usage(1);
+        }
+        else if (strncmp(argv[i], "--directive", 11) == 0) {
+            if (i+1 == argc)
+                return usage(1);
+            i++;
+            if (strncmp(argv[i], "1.1", 3) == 0)
+                minor = 1;
+            else if (strncmp(argv[i], "1.2", 3) == 0)
+                minor = 2;
+            else
+                return usage(1);
+        }
+        else if (!foundfile) {
+            input = fopen(argv[i], "rb");
+            foundfile = 1;
+        }
+
+    }
+    if (minor) {
+        version_directive = YAML_MALLOC_STATIC(yaml_version_directive_t);
+        version_directive->major = 1;
+        version_directive->minor = minor;
+    }
+    if (!foundfile)
+        input = stdin;
+
+    assert(input);
+
+    if (!yaml_emitter_initialize(&emitter)) {
+        fprintf(stderr, "Could not initalize the emitter object\n");
+        return 1;
+    }
+    yaml_emitter_set_output_file(&emitter, stdout);
+    yaml_emitter_set_canonical(&emitter, canonical);
+    yaml_emitter_set_unicode(&emitter, unicode);
+
+
+    while (get_line(input, line)) {
+        int ok;
+        char anchor[256];
+        char tag[256];
+        int implicit;
+        int style;
+
+        if (strncmp(line, "+STR", 4) == 0) {
+            ok = yaml_stream_start_event_initialize(&event, YAML_UTF8_ENCODING);
+        }
+        else if (strncmp(line, "-STR", 4) == 0) {
+            ok = yaml_stream_end_event_initialize(&event);
+        }
+        else if (strncmp(line, "+DOC", 4) == 0) {
+            implicit = strncmp(line+4, " ---", 4) != 0;
+            ok = yaml_document_start_event_initialize(&event, version_directive, NULL, NULL, implicit);
+        }
+        else if (strncmp(line, "-DOC", 4) == 0) {
+            implicit = strncmp(line+4, " ...", 4) != 0;
+            ok = yaml_document_end_event_initialize(&event, implicit);
+        }
+        else if (strncmp(line, "+MAP", 4) == 0) {
+            style = YAML_BLOCK_MAPPING_STYLE;
+            if (flow == 1)
+                style = YAML_FLOW_MAPPING_STYLE;
+            else if (flow == 0 && strncmp(line+5, "{}", 2) == 0)
+                style = YAML_FLOW_MAPPING_STYLE;
+            ok = yaml_mapping_start_event_initialize(&event, (yaml_char_t *)
+                                                     get_anchor('&', line, anchor), (yaml_char_t *)
+                                                     get_tag(line, tag), 0, style);
+        }
+        else if (strncmp(line, "-MAP", 4) == 0) {
+            ok = yaml_mapping_end_event_initialize(&event);
+        }
+        else if (strncmp(line, "+SEQ", 4) == 0) {
+            style = YAML_BLOCK_SEQUENCE_STYLE;
+            if (flow == 1)
+                style = YAML_FLOW_MAPPING_STYLE;
+            else if (flow == 0 && strncmp(line+5, "[]", 2) == 0)
+                style = YAML_FLOW_SEQUENCE_STYLE;
+            ok = yaml_sequence_start_event_initialize(&event, (yaml_char_t *)
+                                                      get_anchor('&', line, anchor), (yaml_char_t *)
+                                                      get_tag(line, tag), 0, style);
+        }
+        else if (strncmp(line, "-SEQ", 4) == 0) {
+            ok = yaml_sequence_end_event_initialize(&event);
+        }
+        else if (strncmp(line, "=VAL", 4) == 0) {
+            char value[1024];
+            int style;
+
+            get_value(line, value, &style);
+            implicit = (get_tag(line, tag) == NULL);
+
+            ok = yaml_scalar_event_initialize(&event, (yaml_char_t *)
+                                              get_anchor('&', line, anchor), (yaml_char_t *) get_tag(line, tag), (yaml_char_t *) value, -1, implicit, implicit, style);
+        }
+        else if (strncmp(line, "=ALI", 4) == 0) {
+            ok = yaml_alias_event_initialize(&event, (yaml_char_t *)
+                                             get_anchor('*', line, anchor)
+                );
+        }
+        else {
+            fprintf(stderr, "Unknown event: '%s'\n", line);
+            fflush(stdout);
+            return 1;
+        }
+
+        if (!ok)
+            goto event_error;
+        if (!yaml_emitter_emit(&emitter, &event))
+            goto emitter_error;
+    }
+
+    assert(!fclose(input));
+    yaml_emitter_delete(&emitter);
+    fflush(stdout);
+
+    return 0;
+
+  emitter_error:
+    switch (emitter.error) {
+    case YAML_MEMORY_ERROR:
+        fprintf(stderr, "Memory error: Not enough memory for emitting\n");
+        break;
+    case YAML_WRITER_ERROR:
+        fprintf(stderr, "Writer error: %s\n", emitter.problem);
+        break;
+    case YAML_EMITTER_ERROR:
+        fprintf(stderr, "Emitter error: %s\n", emitter.problem);
+        break;
+    default:
+        /*
+         * Couldn't happen. 
+         */
+        fprintf(stderr, "Internal error\n");
+        break;
+    }
+    yaml_emitter_delete(&emitter);
+    return 1;
+
+  event_error:
+    fprintf(stderr, "Memory error: Not enough memory for creating an event\n");
+    yaml_emitter_delete(&emitter);
+    return 1;
+}
+
+int get_line(FILE * input, char *line)
+{
+    char *newline;
+
+    if (!fgets(line, 1024 - 1, input))
+        return 0;
+
+    if ((newline = strchr(line, '\n')) == NULL) {
+        fprintf(stderr, "Line too long: '%s'", line);
+        abort();
+    }
+    *newline = '\0';
+
+    return 1;
+}
+
+char *get_anchor(char sigil, char *line, char *anchor)
+{
+    char *start;
+    char *end;
+    if ((start = strchr(line, sigil)) == NULL)
+        return NULL;
+    start++;
+    if ((end = strchr(start, ' ')) == NULL)
+        end = line + strlen(line);
+    memcpy(anchor, start, end - start);
+    anchor[end - start] = '\0';
+    return anchor;
+}
+
+char *get_tag(char *line, char *tag)
+{
+    char *start;
+    char *end;
+    if ((start = strchr(line, '<')) == NULL)
+        return NULL;
+    if ((end = strchr(line, '>')) == NULL)
+        return NULL;
+    memcpy(tag, start + 1, end - start - 1);
+    tag[end - start - 1] = '\0';
+    return tag;
+}
+
+void get_value(char *line, char *value, int *style)
+{
+    int i = 0;
+    char *c;
+    char *start = NULL;
+    char *end = line + strlen(line);
+
+    for (c = line + 4; c < end; c++) {
+        if (*c == ' ') {
+            start = c + 1;
+            if (*start == ':')
+                *style = YAML_PLAIN_SCALAR_STYLE;
+            else if (*start == '\'')
+                *style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
+            else if (*start == '"')
+                *style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
+            else if (*start == '|')
+                *style = YAML_LITERAL_SCALAR_STYLE;
+            else if (*start == '>')
+                *style = YAML_FOLDED_SCALAR_STYLE;
+            else {
+                start = NULL;
+                continue;
+            }
+            start++;
+            break;
+        }
+    }
+    if (!start)
+        abort();
+
+    for (c = start; c < end; c++) {
+        if (*c == '\\') {
+            if (*++c == '\\')
+                value[i++] = '\\';
+            else if (*c == '0')
+                value[i++] = '\0';
+            else if (*c == 'b')
+                value[i++] = '\b';
+            else if (*c == 'n')
+                value[i++] = '\n';
+            else if (*c == 'r')
+                value[i++] = '\r';
+            else if (*c == 't')
+                value[i++] = '\t';
+            else
+                abort();
+        }
+        else
+            value[i++] = *c;
+    }
+    value[i] = '\0';
+}
+
+int usage(int ret) {
+    fprintf(stderr, "Usage: run-emitter-test-suite [--directive (1.1|1.2)] [--flow (on|off|keep)] [<input-file>]\n");
+    return ret;
+}

deps/libyaml/tests/run-emitter.c

@@ -0,0 +1,327 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+#define BUFFER_SIZE 65536
+#define MAX_EVENTS  1024
+
+int copy_event(yaml_event_t *event_to, yaml_event_t *event_from)
+{
+    switch (event_from->type)
+    {
+        case YAML_STREAM_START_EVENT:
+            return yaml_stream_start_event_initialize(event_to,
+                    event_from->data.stream_start.encoding);
+
+        case YAML_STREAM_END_EVENT:
+            return yaml_stream_end_event_initialize(event_to);
+
+        case YAML_DOCUMENT_START_EVENT:
+            return yaml_document_start_event_initialize(event_to,
+                    event_from->data.document_start.version_directive,
+                    event_from->data.document_start.tag_directives.start,
+                    event_from->data.document_start.tag_directives.end,
+                    event_from->data.document_start.implicit);
+
+        case YAML_DOCUMENT_END_EVENT:
+            return yaml_document_end_event_initialize(event_to,
+                    event_from->data.document_end.implicit);
+
+        case YAML_ALIAS_EVENT:
+            return yaml_alias_event_initialize(event_to,
+                    event_from->data.alias.anchor);
+
+        case YAML_SCALAR_EVENT:
+            return yaml_scalar_event_initialize(event_to,
+                    event_from->data.scalar.anchor,
+                    event_from->data.scalar.tag,
+                    event_from->data.scalar.value,
+                    event_from->data.scalar.length,
+                    event_from->data.scalar.plain_implicit,
+                    event_from->data.scalar.quoted_implicit,
+                    event_from->data.scalar.style);
+
+        case YAML_SEQUENCE_START_EVENT:
+            return yaml_sequence_start_event_initialize(event_to,
+                    event_from->data.sequence_start.anchor,
+                    event_from->data.sequence_start.tag,
+                    event_from->data.sequence_start.implicit,
+                    event_from->data.sequence_start.style);
+
+        case YAML_SEQUENCE_END_EVENT:
+            return yaml_sequence_end_event_initialize(event_to);
+
+        case YAML_MAPPING_START_EVENT:
+            return yaml_mapping_start_event_initialize(event_to,
+                    event_from->data.mapping_start.anchor,
+                    event_from->data.mapping_start.tag,
+                    event_from->data.mapping_start.implicit,
+                    event_from->data.mapping_start.style);
+
+        case YAML_MAPPING_END_EVENT:
+            return yaml_mapping_end_event_initialize(event_to);
+
+        default:
+            assert(1);
+    }
+
+    return 0;
+}
+
+int compare_events(yaml_event_t *event1, yaml_event_t *event2)
+{
+    int k;
+
+    if (event1->type != event2->type)
+        return 0;
+
+    switch (event1->type)
+    {
+        case YAML_STREAM_START_EVENT:
+            return 1;
+            /* return (event1->data.stream_start.encoding ==
+                    event2->data.stream_start.encoding); */
+
+        case YAML_DOCUMENT_START_EVENT:
+            if ((event1->data.document_start.version_directive && !event2->data.document_start.version_directive)
+                    || (!event1->data.document_start.version_directive && event2->data.document_start.version_directive)
+                    || (event1->data.document_start.version_directive && event2->data.document_start.version_directive
+                        && (event1->data.document_start.version_directive->major != event2->data.document_start.version_directive->major
+                            || event1->data.document_start.version_directive->minor != event2->data.document_start.version_directive->minor)))
+                return 0;
+            if ((event1->data.document_start.tag_directives.end - event1->data.document_start.tag_directives.start) !=
+                    (event2->data.document_start.tag_directives.end - event2->data.document_start.tag_directives.start))
+                return 0;
+            for (k = 0; k < (event1->data.document_start.tag_directives.end - event1->data.document_start.tag_directives.start); k ++) {
+                if ((strcmp((char *)event1->data.document_start.tag_directives.start[k].handle,
+                                (char *)event2->data.document_start.tag_directives.start[k].handle) != 0)
+                        || (strcmp((char *)event1->data.document_start.tag_directives.start[k].prefix,
+                            (char *)event2->data.document_start.tag_directives.start[k].prefix) != 0))
+                    return 0;
+            }
+            /* if (event1->data.document_start.implicit != event2->data.document_start.implicit)
+                return 0; */
+            return 1;
+
+        case YAML_DOCUMENT_END_EVENT:
+            return 1;
+            /* return (event1->data.document_end.implicit ==
+                    event2->data.document_end.implicit); */
+
+        case YAML_ALIAS_EVENT:
+            return (strcmp((char *)event1->data.alias.anchor,
+                        (char *)event2->data.alias.anchor) == 0);
+
+        case YAML_SCALAR_EVENT:
+            if ((event1->data.scalar.anchor && !event2->data.scalar.anchor)
+                    || (!event1->data.scalar.anchor && event2->data.scalar.anchor)
+                    || (event1->data.scalar.anchor && event2->data.scalar.anchor
+                        && strcmp((char *)event1->data.scalar.anchor,
+                            (char *)event2->data.scalar.anchor) != 0))
+                return 0;
+            if ((event1->data.scalar.tag && !event2->data.scalar.tag
+                        && strcmp((char *)event1->data.scalar.tag, "!") != 0)
+                    || (!event1->data.scalar.tag && event2->data.scalar.tag
+                        && strcmp((char *)event2->data.scalar.tag, "!") != 0)
+                    || (event1->data.scalar.tag && event2->data.scalar.tag
+                        && strcmp((char *)event1->data.scalar.tag,
+                            (char *)event2->data.scalar.tag) != 0))
+                return 0;
+            if ((event1->data.scalar.length != event2->data.scalar.length)
+                    || memcmp(event1->data.scalar.value, event2->data.scalar.value,
+                        event1->data.scalar.length) != 0)
+                return 0;
+            if ((event1->data.scalar.plain_implicit != event2->data.scalar.plain_implicit)
+                    || (event1->data.scalar.quoted_implicit != event2->data.scalar.quoted_implicit)
+                    /* || (event2->data.scalar.style != event2->data.scalar.style) */)
+                return 0;
+            return 1;
+
+        case YAML_SEQUENCE_START_EVENT:
+            if ((event1->data.sequence_start.anchor && !event2->data.sequence_start.anchor)
+                    || (!event1->data.sequence_start.anchor && event2->data.sequence_start.anchor)
+                    || (event1->data.sequence_start.anchor && event2->data.sequence_start.anchor
+                        && strcmp((char *)event1->data.sequence_start.anchor,
+                            (char *)event2->data.sequence_start.anchor) != 0))
+                return 0;
+            if ((event1->data.sequence_start.tag && !event2->data.sequence_start.tag)
+                    || (!event1->data.sequence_start.tag && event2->data.sequence_start.tag)
+                    || (event1->data.sequence_start.tag && event2->data.sequence_start.tag
+                        && strcmp((char *)event1->data.sequence_start.tag,
+                            (char *)event2->data.sequence_start.tag) != 0))
+                return 0;
+            if ((event1->data.sequence_start.implicit != event2->data.sequence_start.implicit)
+                    /* || (event2->data.sequence_start.style != event2->data.sequence_start.style) */)
+                return 0;
+            return 1;
+
+        case YAML_MAPPING_START_EVENT:
+            if ((event1->data.mapping_start.anchor && !event2->data.mapping_start.anchor)
+                    || (!event1->data.mapping_start.anchor && event2->data.mapping_start.anchor)
+                    || (event1->data.mapping_start.anchor && event2->data.mapping_start.anchor
+                        && strcmp((char *)event1->data.mapping_start.anchor,
+                            (char *)event2->data.mapping_start.anchor) != 0))
+                return 0;
+            if ((event1->data.mapping_start.tag && !event2->data.mapping_start.tag)
+                    || (!event1->data.mapping_start.tag && event2->data.mapping_start.tag)
+                    || (event1->data.mapping_start.tag && event2->data.mapping_start.tag
+                        && strcmp((char *)event1->data.mapping_start.tag,
+                            (char *)event2->data.mapping_start.tag) != 0))
+                return 0;
+            if ((event1->data.mapping_start.implicit != event2->data.mapping_start.implicit)
+                    /* || (event2->data.mapping_start.style != event2->data.mapping_start.style) */)
+                return 0;
+            return 1;
+
+        default:
+            return 1;
+    }
+}
+
+int print_output(char *name, unsigned char *buffer, size_t size, int count)
+{
+    FILE *file;
+    char data[BUFFER_SIZE];
+    size_t data_size = 1;
+    size_t total_size = 0;
+    if (count >= 0) {
+        printf("FAILED (at the event #%d)\nSOURCE:\n", count+1);
+    }
+    file = fopen(name, "rb");
+    assert(file);
+    while (data_size > 0) {
+        data_size = fread(data, 1, BUFFER_SIZE, file);
+        assert(!ferror(file));
+        if (!data_size) break;
+        assert(fwrite(data, 1, data_size, stdout) == data_size);
+        total_size += data_size;
+        if (feof(file)) break;
+    }
+    fclose(file);
+    printf("#### (length: %ld)\n", (long)total_size);
+    printf("OUTPUT:\n%s#### (length: %ld)\n", buffer, (long)size);
+    return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+    int number;
+    int canonical = 0;
+    int unicode = 0;
+
+    number = 1;
+    while (number < argc) {
+        if (strcmp(argv[number], "-c") == 0) {
+            canonical = 1;
+        }
+        else if (strcmp(argv[number], "-u") == 0) {
+            unicode = 1;
+        }
+        else if (argv[number][0] == '-') {
+            printf("Unknown option: '%s'\n", argv[number]);
+            return 0;
+        }
+        if (argv[number][0] == '-') {
+            if (number < argc-1) {
+                memmove(argv+number, argv+number+1, (argc-number-1)*sizeof(char *));
+            }
+            argc --;
+        }
+        else {
+            number ++;
+        }
+    }
+
+    if (argc < 2) {
+        printf("Usage: %s [-c] [-u] file1.yaml ...\n", argv[0]);
+        return 0;
+    }
+
+    for (number = 1; number < argc; number ++)
+    {
+        FILE *file;
+        yaml_parser_t parser;
+        yaml_emitter_t emitter;
+        yaml_event_t event;
+        unsigned char buffer[BUFFER_SIZE+1];
+        size_t written = 0;
+        yaml_event_t events[MAX_EVENTS];
+        size_t event_number = 0;
+        int done = 0;
+        int count = 0;
+        int error = 0;
+        int k;
+        memset(buffer, 0, BUFFER_SIZE+1);
+        memset(events, 0, MAX_EVENTS*sizeof(yaml_event_t));
+
+        printf("[%d] Parsing, emitting, and parsing again '%s': ", number, argv[number]);
+        fflush(stdout);
+
+        file = fopen(argv[number], "rb");
+        assert(file);
+
+        assert(yaml_parser_initialize(&parser));
+        yaml_parser_set_input_file(&parser, file);
+        assert(yaml_emitter_initialize(&emitter));
+        if (canonical) {
+            yaml_emitter_set_canonical(&emitter, 1);
+        }
+        if (unicode) {
+            yaml_emitter_set_unicode(&emitter, 1);
+        }
+        yaml_emitter_set_output_string(&emitter, buffer, BUFFER_SIZE, &written);
+
+        while (!done)
+        {
+            if (!yaml_parser_parse(&parser, &event)) {
+                error = 1;
+                break;
+            }
+
+            done = (event.type == YAML_STREAM_END_EVENT);
+            assert(event_number < MAX_EVENTS);
+            assert(copy_event(&(events[event_number++]), &event));
+            assert(yaml_emitter_emit(&emitter, &event) || 
+                    print_output(argv[number], buffer, written, count));
+            count ++;
+        }
+
+        yaml_parser_delete(&parser);
+        assert(!fclose(file));
+        yaml_emitter_delete(&emitter);
+
+        if (!error)
+        {
+            count = done = 0;
+            assert(yaml_parser_initialize(&parser));
+            yaml_parser_set_input_string(&parser, buffer, written);
+
+            while (!done)
+            {
+                assert(yaml_parser_parse(&parser, &event) || print_output(argv[number], buffer, written, count));
+                done = (event.type == YAML_STREAM_END_EVENT);
+                assert(compare_events(events+count, &event) || print_output(argv[number], buffer, written, count));
+                yaml_event_delete(&event);
+                count ++;
+            }
+            yaml_parser_delete(&parser);
+        }
+
+        for (k = 0; k < event_number; k ++) {
+            yaml_event_delete(events+k);
+        }
+
+        printf("PASSED (length: %ld)\n", (long)written);
+        print_output(argv[number], buffer, written, -1);
+    }
+
+    return 0;
+}

deps/libyaml/tests/run-loader.c

@@ -0,0 +1,63 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+int
+main(int argc, char *argv[])
+{
+    int number;
+
+    if (argc < 2) {
+        printf("Usage: %s file1.yaml ...\n", argv[0]);
+        return 0;
+    }
+
+    for (number = 1; number < argc; number ++)
+    {
+        FILE *file;
+        yaml_parser_t parser;
+        yaml_document_t document;
+        int done = 0;
+        int count = 0;
+        int error = 0;
+
+        printf("[%d] Loading '%s': ", number, argv[number]);
+        fflush(stdout);
+
+        file = fopen(argv[number], "rb");
+        assert(file);
+
+        assert(yaml_parser_initialize(&parser));
+
+        yaml_parser_set_input_file(&parser, file);
+
+        while (!done)
+        {
+            if (!yaml_parser_load(&parser, &document)) {
+                error = 1;
+                break;
+            }
+
+            done = (!yaml_document_get_root_node(&document));
+
+            yaml_document_delete(&document);
+
+            if (!done) count ++;
+        }
+
+        yaml_parser_delete(&parser);
+
+        assert(!fclose(file));
+
+        printf("%s (%d documents)\n", (error ? "FAILURE" : "SUCCESS"), count);
+    }
+
+    return 0;
+}
+

deps/libyaml/tests/run-parser-test-suite.c

@@ -0,0 +1,189 @@
+#include <yaml.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+
+void print_escaped(yaml_char_t * str, size_t length);
+int usage(int ret);
+
+int main(int argc, char *argv[])
+{
+    FILE *input;
+    yaml_parser_t parser;
+    yaml_event_t event;
+    int flow = -1; /** default no flow style collections */
+    int i = 0;
+    int foundfile = 0;
+
+    for (i = 1; i < argc; i++) {
+        if (strncmp(argv[i], "--flow", 6) == 0) {
+            if (i+1 == argc)
+                return usage(1);
+            i++;
+            if (strncmp(argv[i], "keep", 4) == 0)
+                flow = 0;
+            else if (strncmp(argv[i], "on", 2) == 0)
+                flow = 1;
+            else if (strncmp(argv[i], "off", 3) == 0)
+                flow = -1;
+            else
+                return usage(1);
+        }
+        else if (strncmp(argv[i], "--help", 6) == 0)
+            return usage(0);
+        else if (strncmp(argv[i], "-h", 2) == 0)
+            return usage(0);
+        else if (!foundfile) {
+            input = fopen(argv[i], "rb");
+            foundfile = 1;
+        }
+        else
+            return usage(1);
+    }
+    if (!foundfile) {
+        input = stdin;
+    }
+    assert(input);
+
+    if (!yaml_parser_initialize(&parser)) {
+        fprintf(stderr, "Could not initialize the parser object\n");
+        return 1;
+    }
+    yaml_parser_set_input_file(&parser, input);
+
+    while (1) {
+        yaml_event_type_t type;
+        if (!yaml_parser_parse(&parser, &event)) {
+            if ( parser.problem_mark.line || parser.problem_mark.column ) {
+                fprintf(stderr, "Parse error: %s\nLine: %lu Column: %lu\n",
+                    parser.problem,
+                    (unsigned long)parser.problem_mark.line + 1,
+                    (unsigned long)parser.problem_mark.column + 1);
+            }
+            else {
+                fprintf(stderr, "Parse error: %s\n", parser.problem);
+            }
+            return 1;
+        }
+        type = event.type;
+
+        if (type == YAML_NO_EVENT)
+            printf("???\n");
+        else if (type == YAML_STREAM_START_EVENT)
+            printf("+STR\n");
+        else if (type == YAML_STREAM_END_EVENT)
+            printf("-STR\n");
+        else if (type == YAML_DOCUMENT_START_EVENT) {
+            printf("+DOC");
+            if (!event.data.document_start.implicit)
+                printf(" ---");
+            printf("\n");
+        }
+        else if (type == YAML_DOCUMENT_END_EVENT) {
+            printf("-DOC");
+            if (!event.data.document_end.implicit)
+                printf(" ...");
+            printf("\n");
+        }
+        else if (type == YAML_MAPPING_START_EVENT) {
+            printf("+MAP");
+            if (flow == 0 && event.data.mapping_start.style == YAML_FLOW_MAPPING_STYLE)
+                printf(" {}");
+            else if (flow == 1)
+                printf(" {}");
+            if (event.data.mapping_start.anchor)
+                printf(" &%s", event.data.mapping_start.anchor);
+            if (event.data.mapping_start.tag)
+                printf(" <%s>", event.data.mapping_start.tag);
+            printf("\n");
+        }
+        else if (type == YAML_MAPPING_END_EVENT)
+            printf("-MAP\n");
+        else if (type == YAML_SEQUENCE_START_EVENT) {
+            printf("+SEQ");
+            if (flow == 0 && event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE)
+                printf(" []");
+            else if (flow == 1)
+                printf(" []");
+            if (event.data.sequence_start.anchor)
+                printf(" &%s", event.data.sequence_start.anchor);
+            if (event.data.sequence_start.tag)
+                printf(" <%s>", event.data.sequence_start.tag);
+            printf("\n");
+        }
+        else if (type == YAML_SEQUENCE_END_EVENT)
+            printf("-SEQ\n");
+        else if (type == YAML_SCALAR_EVENT) {
+            printf("=VAL");
+            if (event.data.scalar.anchor)
+                printf(" &%s", event.data.scalar.anchor);
+            if (event.data.scalar.tag)
+                printf(" <%s>", event.data.scalar.tag);
+            switch (event.data.scalar.style) {
+            case YAML_PLAIN_SCALAR_STYLE:
+                printf(" :");
+                break;
+            case YAML_SINGLE_QUOTED_SCALAR_STYLE:
+                printf(" '");
+                break;
+            case YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+                printf(" \"");
+                break;
+            case YAML_LITERAL_SCALAR_STYLE:
+                printf(" |");
+                break;
+            case YAML_FOLDED_SCALAR_STYLE:
+                printf(" >");
+                break;
+            case YAML_ANY_SCALAR_STYLE:
+                abort();
+            }
+            print_escaped(event.data.scalar.value, event.data.scalar.length);
+            printf("\n");
+        }
+        else if (type == YAML_ALIAS_EVENT)
+            printf("=ALI *%s\n", event.data.alias.anchor);
+        else
+            abort();
+
+        yaml_event_delete(&event);
+
+        if (type == YAML_STREAM_END_EVENT)
+            break;
+    }
+
+    assert(!fclose(input));
+    yaml_parser_delete(&parser);
+    fflush(stdout);
+
+    return 0;
+}
+
+void print_escaped(yaml_char_t * str, size_t length)
+{
+    int i;
+    char c;
+
+    for (i = 0; i < length; i++) {
+        c = *(str + i);
+        if (c == '\\')
+            printf("\\\\");
+        else if (c == '\0')
+            printf("\\0");
+        else if (c == '\b')
+            printf("\\b");
+        else if (c == '\n')
+            printf("\\n");
+        else if (c == '\r')
+            printf("\\r");
+        else if (c == '\t')
+            printf("\\t");
+        else
+            printf("%c", c);
+    }
+}
+
+int usage(int ret) {
+    fprintf(stderr, "Usage: libyaml-parser [--flow (on|off|keep)] [<input-file>]\n");
+    return ret;
+}

deps/libyaml/tests/run-parser.c

@@ -0,0 +1,63 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+int
+main(int argc, char *argv[])
+{
+    int number;
+
+    if (argc < 2) {
+        printf("Usage: %s file1.yaml ...\n", argv[0]);
+        return 0;
+    }
+
+    for (number = 1; number < argc; number ++)
+    {
+        FILE *file;
+        yaml_parser_t parser;
+        yaml_event_t event;
+        int done = 0;
+        int count = 0;
+        int error = 0;
+
+        printf("[%d] Parsing '%s': ", number, argv[number]);
+        fflush(stdout);
+
+        file = fopen(argv[number], "rb");
+        assert(file);
+
+        assert(yaml_parser_initialize(&parser));
+
+        yaml_parser_set_input_file(&parser, file);
+
+        while (!done)
+        {
+            if (!yaml_parser_parse(&parser, &event)) {
+                error = 1;
+                break;
+            }
+
+            done = (event.type == YAML_STREAM_END_EVENT);
+
+            yaml_event_delete(&event);
+
+            count ++;
+        }
+
+        yaml_parser_delete(&parser);
+
+        assert(!fclose(file));
+
+        printf("%s (%d events)\n", (error ? "FAILURE" : "SUCCESS"), count);
+    }
+
+    return 0;
+}
+

deps/libyaml/tests/run-scanner.c

@@ -0,0 +1,63 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+int
+main(int argc, char *argv[])
+{
+    int number;
+
+    if (argc < 2) {
+        printf("Usage: %s file1.yaml ...\n", argv[0]);
+        return 0;
+    }
+
+    for (number = 1; number < argc; number ++)
+    {
+        FILE *file;
+        yaml_parser_t parser;
+        yaml_token_t token;
+        int done = 0;
+        int count = 0;
+        int error = 0;
+
+        printf("[%d] Scanning '%s': ", number, argv[number]);
+        fflush(stdout);
+
+        file = fopen(argv[number], "rb");
+        assert(file);
+
+        assert(yaml_parser_initialize(&parser));
+
+        yaml_parser_set_input_file(&parser, file);
+
+        while (!done)
+        {
+            if (!yaml_parser_scan(&parser, &token)) {
+                error = 1;
+                break;
+            }
+
+            done = (token.type == YAML_STREAM_END_TOKEN);
+
+            yaml_token_delete(&token);
+
+            count ++;
+        }
+
+        yaml_parser_delete(&parser);
+
+        assert(!fclose(file));
+
+        printf("%s (%d tokens)\n", (error ? "FAILURE" : "SUCCESS"), count);
+    }
+
+    return 0;
+}
+

deps/libyaml/tests/test-reader.c

@@ -0,0 +1,354 @@
+#include <yaml.h>
+
+YAML_DECLARE(int)
+yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+/*
+ * Test cases are stolen from
+ * http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt
+ */
+
+typedef struct {
+    char *title;
+    char *test;
+    int result;
+} test_case;
+
+test_case utf8_sequences[] = {
+    /* {"title", "test 1|test 2|...|test N!", (0 or 1)}, */
+
+    {"a simple test", "'test' is '\xd0\xbf\xd1\x80\xd0\xbe\xd0\xb2\xd0\xb5\xd1\x80\xd0\xba\xd0\xb0' in Russian!", 1},
+    {"an empty line", "!", 1},
+
+    {"u-0 is a control character", "\x00!", 0},
+    {"u-80 is a control character", "\xc2\x80!", 0},
+    {"u-800 is valid", "\xe0\xa0\x80!", 1},
+    {"u-10000 is valid", "\xf0\x90\x80\x80!", 1},
+    {"5 bytes sequences are not allowed", "\xf8\x88\x80\x80\x80!", 0},
+    {"6 bytes sequences are not allowed", "\xfc\x84\x80\x80\x80\x80!", 0},
+
+    {"u-7f is a control character", "\x7f!", 0},
+    {"u-7FF is valid", "\xdf\xbf!", 1},
+    {"u-FFFF is a control character", "\xef\xbf\xbf!", 0},
+    {"u-1FFFFF is too large", "\xf7\xbf\xbf\xbf!", 0},
+    {"u-3FFFFFF is 5 bytes", "\xfb\xbf\xbf\xbf\xbf!", 0},
+    {"u-7FFFFFFF is 6 bytes", "\xfd\xbf\xbf\xbf\xbf\xbf!", 0},
+
+    {"u-D7FF", "\xed\x9f\xbf!", 1},
+    {"u-E000", "\xee\x80\x80!", 1},
+    {"u-FFFD", "\xef\xbf\xbd!", 1},
+    {"u-10FFFF", "\xf4\x8f\xbf\xbf!", 1},
+    {"u-110000", "\xf4\x90\x80\x80!", 0},
+
+    {"first continuation byte", "\x80!", 0},
+    {"last continuation byte", "\xbf!", 0},
+
+    {"2 continuation bytes", "\x80\xbf!", 0},
+    {"3 continuation bytes", "\x80\xbf\x80!", 0},
+    {"4 continuation bytes", "\x80\xbf\x80\xbf!", 0},
+    {"5 continuation bytes", "\x80\xbf\x80\xbf\x80!", 0},
+    {"6 continuation bytes", "\x80\xbf\x80\xbf\x80\xbf!", 0},
+    {"7 continuation bytes", "\x80\xbf\x80\xbf\x80\xbf\x80!", 0},
+
+    {"sequence of all 64 possible continuation bytes",
+     "\x80|\x81|\x82|\x83|\x84|\x85|\x86|\x87|\x88|\x89|\x8a|\x8b|\x8c|\x8d|\x8e|\x8f|"
+     "\x90|\x91|\x92|\x93|\x94|\x95|\x96|\x97|\x98|\x99|\x9a|\x9b|\x9c|\x9d|\x9e|\x9f|"
+     "\xa0|\xa1|\xa2|\xa3|\xa4|\xa5|\xa6|\xa7|\xa8|\xa9|\xaa|\xab|\xac|\xad|\xae|\xaf|"
+     "\xb0|\xb1|\xb2|\xb3|\xb4|\xb5|\xb6|\xb7|\xb8|\xb9|\xba|\xbb|\xbc|\xbd|\xbe|\xbf!", 0},
+    {"32 first bytes of 2-byte sequences {0xc0-0xdf}",
+     "\xc0 |\xc1 |\xc2 |\xc3 |\xc4 |\xc5 |\xc6 |\xc7 |\xc8 |\xc9 |\xca |\xcb |\xcc |\xcd |\xce |\xcf |"
+     "\xd0 |\xd1 |\xd2 |\xd3 |\xd4 |\xd5 |\xd6 |\xd7 |\xd8 |\xd9 |\xda |\xdb |\xdc |\xdd |\xde |\xdf !", 0},
+    {"16 first bytes of 3-byte sequences {0xe0-0xef}",
+     "\xe0 |\xe1 |\xe2 |\xe3 |\xe4 |\xe5 |\xe6 |\xe7 |\xe8 |\xe9 |\xea |\xeb |\xec |\xed |\xee |\xef !", 0},
+    {"8 first bytes of 4-byte sequences {0xf0-0xf7}", "\xf0 |\xf1 |\xf2 |\xf3 |\xf4 |\xf5 |\xf6 |\xf7 !", 0},
+    {"4 first bytes of 5-byte sequences {0xf8-0xfb}", "\xf8 |\xf9 |\xfa |\xfb !", 0},
+    {"2 first bytes of 6-byte sequences {0xfc-0xfd}", "\xfc |\xfd !", 0},
+
+    {"sequences with last byte missing {u-0}",
+     "\xc0|\xe0\x80|\xf0\x80\x80|\xf8\x80\x80\x80|\xfc\x80\x80\x80\x80!", 0},
+    {"sequences with last byte missing {u-...FF}",
+     "\xdf|\xef\xbf|\xf7\xbf\xbf|\xfb\xbf\xbf\xbf|\xfd\xbf\xbf\xbf\xbf!", 0},
+
+    {"impossible bytes", "\xfe|\xff|\xfe\xfe\xff\xff!", 0},
+
+    {"overlong sequences {u-2f}",
+     "\xc0\xaf|\xe0\x80\xaf|\xf0\x80\x80\xaf|\xf8\x80\x80\x80\xaf|\xfc\x80\x80\x80\x80\xaf!", 0},
+
+    {"maximum overlong sequences",
+     "\xc1\xbf|\xe0\x9f\xbf|\xf0\x8f\xbf\xbf|\xf8\x87\xbf\xbf\xbf|\xfc\x83\xbf\xbf\xbf\xbf!", 0},
+
+    {"overlong representation of the NUL character",
+     "\xc0\x80|\xe0\x80\x80|\xf0\x80\x80\x80|\xf8\x80\x80\x80\x80|\xfc\x80\x80\x80\x80\x80!", 0},
+
+    {"single UTF-16 surrogates",
+     "\xed\xa0\x80|\xed\xad\xbf|\xed\xae\x80|\xed\xaf\xbf|\xed\xb0\x80|\xed\xbe\x80|\xed\xbf\xbf!", 0},
+
+    {"paired UTF-16 surrogates",
+     "\xed\xa0\x80\xed\xb0\x80|\xed\xa0\x80\xed\xbf\xbf|\xed\xad\xbf\xed\xb0\x80|"
+     "\xed\xad\xbf\xed\xbf\xbf|\xed\xae\x80\xed\xb0\x80|\xed\xae\x80\xed\xbf\xbf|"
+     "\xed\xaf\xbf\xed\xb0\x80|\xed\xaf\xbf\xed\xbf\xbf!", 0},
+
+    {"other illegal code positions", "\xef\xbf\xbe|\xef\xbf\xbf!", 0},
+
+    {NULL, NULL, 0}
+};
+
+test_case boms[] = {
+    
+    /* {"title", "test!", lenth}, */
+    
+    {"no bom (utf-8)", "Hi is \xd0\x9f\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5\xd1\x82!", 13},
+    {"bom (utf-8)", "\xef\xbb\xbfHi is \xd0\x9f\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5\xd1\x82!", 13},
+    {"bom (utf-16-le)", "\xff\xfeH\x00i\x00 \x00i\x00s\x00 \x00\x1f\x04@\x04""8\x04""2\x04""5\x04""B\x04!", 13},
+    {"bom (utf-16-be)", "\xfe\xff\x00H\x00i\x00 \x00i\x00s\x00 \x04\x1f\x04@\x04""8\x04""2\x04""5\x04""B!", 13},
+    {NULL, NULL, 0}
+};
+
+char *bom_original = "Hi is \xd0\x9f\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5\xd1\x82";
+
+int check_utf8_sequences(void)
+{
+    yaml_parser_t parser;
+    int failed = 0;
+    int k;
+    printf("checking utf-8 sequences...\n");
+    for (k = 0; utf8_sequences[k].test; k++) {
+        char *title = utf8_sequences[k].title;
+        int check = utf8_sequences[k].result;
+        int result;
+        char *start = utf8_sequences[k].test;
+        char *end = start;
+        printf("\t%s:\n", title);
+        while(1) {
+            while (*end != '|' && *end != '!') end++;
+            yaml_parser_initialize(&parser);
+            yaml_parser_set_input_string(&parser, (unsigned char *)start, end-start);
+            result = yaml_parser_update_buffer(&parser, end-start);
+            if (result != check) {
+                printf("\t\t- ");
+                failed ++;
+            }
+            else {
+                printf("\t\t+ ");
+            }
+            if (!parser.error) {
+                printf("(no error)\n");
+            }
+            else if (parser.error == YAML_READER_ERROR) {
+                if (parser.problem_value != -1) {
+                    printf("(reader error: %s: #%X at %ld)\n",
+                            parser.problem, parser.problem_value, (long)parser.problem_offset);
+                }
+                else {
+                    printf("(reader error: %s at %ld)\n",
+                            parser.problem, (long)parser.problem_offset);
+                }
+            }
+            if (*end == '!') break;
+            start = ++end;
+            yaml_parser_delete(&parser);
+        };
+        printf("\n");
+    }
+    printf("checking utf-8 sequences: %d fail(s)\n", failed);
+    return failed;
+}
+
+int check_boms(void)
+{
+    yaml_parser_t parser;
+    int failed = 0;
+    int k;
+    printf("checking boms...\n");
+    for (k = 0; boms[k].test; k++) {
+        char *title = boms[k].title;
+        int check = boms[k].result;
+        int result;
+        char *start = boms[k].test;
+        char *end = start;
+        while (*end != '!') end++;
+        printf("\t%s: ", title);
+        yaml_parser_initialize(&parser);
+        yaml_parser_set_input_string(&parser, (unsigned char *)start, end-start);
+        result = yaml_parser_update_buffer(&parser, end-start);
+        if (!result) {
+            printf("- (reader error: %s at %ld)\n", parser.problem, (long)parser.problem_offset);
+            failed++;
+        }
+        else {
+            if (parser.unread != check) {
+                printf("- (length=%ld while expected length=%d)\n", (long)parser.unread, check);
+                failed++;
+            }
+            else if (memcmp(parser.buffer.start, bom_original, check) != 0) {
+                printf("- (value '%s' does not equal to the original value '%s')\n", parser.buffer.start, bom_original);
+                failed++;
+            }
+            else {
+                printf("+\n");
+            }
+        }
+        yaml_parser_delete(&parser);
+    }
+    printf("checking boms: %d fail(s)\n", failed);
+    return failed;
+}
+
+#define LONG    100000
+
+int check_long_utf8(void)
+{
+    yaml_parser_t parser;
+    int k = 0;
+    int j;
+    int failed = 0;
+    unsigned char ch0, ch1;
+    unsigned char *buffer = (unsigned char *)malloc(3+LONG*2);
+    assert(buffer);
+    printf("checking a long utf8 sequence...\n");
+    buffer[k++] = '\xef';
+    buffer[k++] = '\xbb';
+    buffer[k++] = '\xbf';
+    for (j = 0; j < LONG; j ++) {
+        if (j % 2) {
+            buffer[k++] = '\xd0';
+            buffer[k++] = '\x90';
+        }
+        else {
+            buffer[k++] = '\xd0';
+            buffer[k++] = '\xaf';
+        }
+    }
+    yaml_parser_initialize(&parser);
+    yaml_parser_set_input_string(&parser, buffer, 3+LONG*2);
+    for (k = 0; k < LONG; k++) {
+        if (!parser.unread) {
+            if (!yaml_parser_update_buffer(&parser, 1)) {
+                printf("\treader error: %s at %ld\n", parser.problem, (long)parser.problem_offset);
+                failed = 1;
+                break;
+            }
+        }
+        if (!parser.unread) {
+            printf("\tnot enough characters at %d\n", k);
+            failed = 1;
+            break;
+        }
+        if (k % 2) {
+            ch0 = '\xd0';
+            ch1 = '\x90';
+        }
+        else {
+            ch0 = '\xd0';
+            ch1 = '\xaf';
+        }
+        if (parser.buffer.pointer[0] != ch0 || parser.buffer.pointer[1] != ch1) {
+            printf("\tincorrect UTF-8 sequence: %X %X instead of %X %X\n",
+                    (int)parser.buffer.pointer[0], (int)parser.buffer.pointer[1],
+                    (int)ch0, (int)ch1);
+            failed = 1;
+            break;
+        }
+        parser.buffer.pointer += 2;
+        parser.unread -= 1;
+    }
+    if (!failed) {
+        if (!yaml_parser_update_buffer(&parser, 1)) {
+            printf("\treader error: %s at %ld\n", parser.problem, (long)parser.problem_offset);
+            failed = 1;
+        }
+        else if (parser.buffer.pointer[0] != '\0') {
+            printf("\texpected NUL, found %X (eof=%d, unread=%ld)\n", (int)parser.buffer.pointer[0], parser.eof, (long)parser.unread);
+            failed = 1;
+        }
+    }
+    yaml_parser_delete(&parser);
+    free(buffer);
+    printf("checking a long utf8 sequence: %d fail(s)\n", failed);
+    return failed;
+}
+
+int check_long_utf16(void)
+{
+    yaml_parser_t parser;
+    int k = 0;
+    int j;
+    int failed = 0;
+    unsigned char ch0, ch1;
+    unsigned char *buffer = (unsigned char *)malloc(2+LONG*2);
+    assert(buffer);
+    printf("checking a long utf16 sequence...\n");
+    buffer[k++] = '\xff';
+    buffer[k++] = '\xfe';
+    for (j = 0; j < LONG; j ++) {
+        if (j % 2) {
+            buffer[k++] = '\x10';
+            buffer[k++] = '\x04';
+        }
+        else {
+            buffer[k++] = '/';
+            buffer[k++] = '\x04';
+        }
+    }
+    yaml_parser_initialize(&parser);
+    yaml_parser_set_input_string(&parser, buffer, 2+LONG*2);
+    for (k = 0; k < LONG; k++) {
+        if (!parser.unread) {
+            if (!yaml_parser_update_buffer(&parser, 1)) {
+                printf("\treader error: %s at %ld\n", parser.problem, (long)parser.problem_offset);
+                failed = 1;
+                break;
+            }
+        }
+        if (!parser.unread) {
+            printf("\tnot enough characters at %d\n", k);
+            failed = 1;
+            break;
+        }
+        if (k % 2) {
+            ch0 = '\xd0';
+            ch1 = '\x90';
+        }
+        else {
+            ch0 = '\xd0';
+            ch1 = '\xaf';
+        }
+        if (parser.buffer.pointer[0] != ch0 || parser.buffer.pointer[1] != ch1) {
+            printf("\tincorrect UTF-8 sequence: %X %X instead of %X %X\n",
+                    (int)parser.buffer.pointer[0], (int)parser.buffer.pointer[1],
+                    (int)ch0, (int)ch1);
+            failed = 1;
+            break;
+        }
+        parser.buffer.pointer += 2;
+        parser.unread -= 1;
+    }
+    if (!failed) {
+        if (!yaml_parser_update_buffer(&parser, 1)) {
+            printf("\treader error: %s at %ld\n", parser.problem, (long)parser.problem_offset);
+            failed = 1;
+        }
+        else if (parser.buffer.pointer[0] != '\0') {
+            printf("\texpected NUL, found %X (eof=%d, unread=%ld)\n", (int)parser.buffer.pointer[0], parser.eof, (long)parser.unread);
+            failed = 1;
+        }
+    }
+    yaml_parser_delete(&parser);
+    free(buffer);
+    printf("checking a long utf16 sequence: %d fail(s)\n", failed);
+    return failed;
+}
+
+int
+main(void)
+{
+    return check_utf8_sequences() + check_boms() + check_long_utf8() + check_long_utf16();
+}

deps/libyaml/tests/test-version.c

@@ -0,0 +1,29 @@
+#include <yaml.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <assert.h>
+
+int
+main(void)
+{
+    int major = -1;
+    int minor = -1;
+    int patch = -1;
+    char buf[64];
+
+    yaml_get_version(&major, &minor, &patch);
+    sprintf(buf, "%d.%d.%d", major, minor, patch);
+    assert(strcmp(buf, yaml_get_version_string()) == 0);
+
+    /* Print structure sizes. */
+    printf("sizeof(token) = %ld\n", (long)sizeof(yaml_token_t));
+    printf("sizeof(event) = %ld\n", (long)sizeof(yaml_event_t));
+    printf("sizeof(parser) = %ld\n", (long)sizeof(yaml_parser_t));
+
+    return 0;
+}

deps/libyaml/yaml-0.1.pc.in

@@ -0,0 +1,10 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+includedir=@includedir@
+libdir=@libdir@
+
+Name: LibYAML
+Description: Library to parse and emit YAML
+Version: @PACKAGE_VERSION@
+Cflags: -I${includedir}
+Libs: -L${libdir} -lyaml

deps/libyaml/yamlConfig.cmake.in

@@ -0,0 +1,16 @@
+# Config file for the yaml library.
+#
+# It defines the following variables:
+#   yaml_LIBRARIES    - libraries to link against
+
+@PACKAGE_INIT@
+
+set_and_check(yaml_TARGETS "@PACKAGE_CONFIG_DIR_CONFIG@/yamlTargets.cmake")
+
+if(NOT yaml_TARGETS_IMPORTED)
+  set(yaml_TARGETS_IMPORTED 1)
+  include(${yaml_TARGETS})
+endif()
+
+set(yaml_LIBRARIES yaml)
+