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ruby--ruby/ext/psych/yaml/yaml.h
zzak 40424c2600 * ext/psych/yaml/yaml.h: [DOC] merge upstream typo fix by @GreenGeorge 
https://github.com/tenderlove/psych/pull/161


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42993 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-09-20 14:51:35 +00:00

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/**
* @file yaml.h
* @brief Public interface for libyaml.
*
* Include the header file with the code:
* @code
* #include <yaml.h>
* @endcode
*/
#ifndef YAML_H
#define YAML_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/**
* @defgroup export Export Definitions
* @{
*/
/** The public API declaration. */
#ifdef _WIN32
# if defined(YAML_DECLARE_STATIC)
# define YAML_DECLARE(type) type
# elif defined(YAML_DECLARE_EXPORT)
# define YAML_DECLARE(type) __declspec(dllexport) type
# else
# define YAML_DECLARE(type) __declspec(dllimport) type
# endif
#else
# define YAML_DECLARE(type) type
#endif
/** @} */
/**
* @defgroup version Version Information
* @{
*/
/**
* Get the library version as a string.
*
* @returns The function returns the pointer to a static string of the form
* @c "X.Y.Z", where @c X is the major version number, @c Y is a minor version
* number, and @c Z is the patch version number.
*/
YAML_DECLARE(const char *)
yaml_get_version_string(void);
/**
* Get the library version numbers.
*
* @param[out] major Major version number.
* @param[out] minor Minor version number.
* @param[out] patch Patch version number.
*/
YAML_DECLARE(void)
yaml_get_version(int *major, int *minor, int *patch);
/** @} */
/**
* @defgroup basic Basic Types
* @{
*/
/** The character type (UTF-8 octet). */
typedef unsigned char yaml_char_t;
/** The version directive data. */
typedef struct yaml_version_directive_s {
/** The major version number. */
int major;
/** The minor version number. */
int minor;
} yaml_version_directive_t;
/** The tag directive data. */
typedef struct yaml_tag_directive_s {
/** The tag handle. */
yaml_char_t *handle;
/** The tag prefix. */
yaml_char_t *prefix;
} yaml_tag_directive_t;
/** The stream encoding. */
typedef enum yaml_encoding_e {
/** Let the parser choose the encoding. */
YAML_ANY_ENCODING,
/** The default UTF-8 encoding. */
YAML_UTF8_ENCODING,
/** The UTF-16-LE encoding with BOM. */
YAML_UTF16LE_ENCODING,
/** The UTF-16-BE encoding with BOM. */
YAML_UTF16BE_ENCODING
} yaml_encoding_t;
/** Line break types. */
typedef enum yaml_break_e {
/** Let the parser choose the break type. */
YAML_ANY_BREAK,
/** Use CR for line breaks (Mac style). */
YAML_CR_BREAK,
/** Use LN for line breaks (Unix style). */
YAML_LN_BREAK,
/** Use CR LN for line breaks (DOS style). */
YAML_CRLN_BREAK
} yaml_break_t;
/** Many bad things could happen with the parser and emitter. */
typedef enum yaml_error_type_e {
/** No error is produced. */
YAML_NO_ERROR,
/** Cannot allocate or reallocate a block of memory. */
YAML_MEMORY_ERROR,
/** Cannot read or decode the input stream. */
YAML_READER_ERROR,
/** Cannot scan the input stream. */
YAML_SCANNER_ERROR,
/** Cannot parse the input stream. */
YAML_PARSER_ERROR,
/** Cannot compose a YAML document. */
YAML_COMPOSER_ERROR,
/** Cannot write to the output stream. */
YAML_WRITER_ERROR,
/** Cannot emit a YAML stream. */
YAML_EMITTER_ERROR
} yaml_error_type_t;
/** The pointer position. */
typedef struct yaml_mark_s {
/** The position index. */
size_t index;
/** The position line. */
size_t line;
/** The position column. */
size_t column;
} yaml_mark_t;
/** @} */
/**
* @defgroup styles Node Styles
* @{
*/
/** Scalar styles. */
typedef enum yaml_scalar_style_e {
/** Let the emitter choose the style. */
YAML_ANY_SCALAR_STYLE,
/** The plain scalar style. */
YAML_PLAIN_SCALAR_STYLE,
/** The single-quoted scalar style. */
YAML_SINGLE_QUOTED_SCALAR_STYLE,
/** The double-quoted scalar style. */
YAML_DOUBLE_QUOTED_SCALAR_STYLE,
/** The literal scalar style. */
YAML_LITERAL_SCALAR_STYLE,
/** The folded scalar style. */
YAML_FOLDED_SCALAR_STYLE
} yaml_scalar_style_t;
/** Sequence styles. */
typedef enum yaml_sequence_style_e {
/** Let the emitter choose the style. */
YAML_ANY_SEQUENCE_STYLE,
/** The block sequence style. */
YAML_BLOCK_SEQUENCE_STYLE,
/** The flow sequence style. */
YAML_FLOW_SEQUENCE_STYLE
} yaml_sequence_style_t;
/** Mapping styles. */
typedef enum yaml_mapping_style_e {
/** Let the emitter choose the style. */
YAML_ANY_MAPPING_STYLE,
/** The block mapping style. */
YAML_BLOCK_MAPPING_STYLE,
/** The flow mapping style. */
YAML_FLOW_MAPPING_STYLE
/* YAML_FLOW_SET_MAPPING_STYLE */
} yaml_mapping_style_t;
/** @} */
/**
* @defgroup tokens Tokens
* @{
*/
/** Token types. */
typedef enum yaml_token_type_e {
/** An empty token. */
YAML_NO_TOKEN,
/** A STREAM-START token. */
YAML_STREAM_START_TOKEN,
/** A STREAM-END token. */
YAML_STREAM_END_TOKEN,
/** A VERSION-DIRECTIVE token. */
YAML_VERSION_DIRECTIVE_TOKEN,
/** A TAG-DIRECTIVE token. */
YAML_TAG_DIRECTIVE_TOKEN,
/** A DOCUMENT-START token. */
YAML_DOCUMENT_START_TOKEN,
/** A DOCUMENT-END token. */
YAML_DOCUMENT_END_TOKEN,
/** A BLOCK-SEQUENCE-START token. */
YAML_BLOCK_SEQUENCE_START_TOKEN,
/** A BLOCK-SEQUENCE-END token. */
YAML_BLOCK_MAPPING_START_TOKEN,
/** A BLOCK-END token. */
YAML_BLOCK_END_TOKEN,
/** A FLOW-SEQUENCE-START token. */
YAML_FLOW_SEQUENCE_START_TOKEN,
/** A FLOW-SEQUENCE-END token. */
YAML_FLOW_SEQUENCE_END_TOKEN,
/** A FLOW-MAPPING-START token. */
YAML_FLOW_MAPPING_START_TOKEN,
/** A FLOW-MAPPING-END token. */
YAML_FLOW_MAPPING_END_TOKEN,
/** A BLOCK-ENTRY token. */
YAML_BLOCK_ENTRY_TOKEN,
/** A FLOW-ENTRY token. */
YAML_FLOW_ENTRY_TOKEN,
/** A KEY token. */
YAML_KEY_TOKEN,
/** A VALUE token. */
YAML_VALUE_TOKEN,
/** An ALIAS token. */
YAML_ALIAS_TOKEN,
/** An ANCHOR token. */
YAML_ANCHOR_TOKEN,
/** A TAG token. */
YAML_TAG_TOKEN,
/** A SCALAR token. */
YAML_SCALAR_TOKEN
} yaml_token_type_t;
/** The token structure. */
typedef struct yaml_token_s {
/** The token type. */
yaml_token_type_t type;
/** The token data. */
union {
/** The stream start (for @c YAML_STREAM_START_TOKEN). */
struct {
/** The stream encoding. */
yaml_encoding_t encoding;
} stream_start;
/** The alias (for @c YAML_ALIAS_TOKEN). */
struct {
/** The alias value. */
yaml_char_t *value;
} alias;
/** The anchor (for @c YAML_ANCHOR_TOKEN). */
struct {
/** The anchor value. */
yaml_char_t *value;
} anchor;
/** The tag (for @c YAML_TAG_TOKEN). */
struct {
/** The tag handle. */
yaml_char_t *handle;
/** The tag suffix. */
yaml_char_t *suffix;
} tag;
/** The scalar value (for @c YAML_SCALAR_TOKEN). */
struct {
/** The scalar value. */
yaml_char_t *value;
/** The length of the scalar value. */
size_t length;
/** The scalar style. */
yaml_scalar_style_t style;
} scalar;
/** The version directive (for @c YAML_VERSION_DIRECTIVE_TOKEN). */
struct {
/** The major version number. */
int major;
/** The minor version number. */
int minor;
} version_directive;
/** The tag directive (for @c YAML_TAG_DIRECTIVE_TOKEN). */
struct {
/** The tag handle. */
yaml_char_t *handle;
/** The tag prefix. */
yaml_char_t *prefix;
} tag_directive;
} data;
/** The beginning of the token. */
yaml_mark_t start_mark;
/** The end of the token. */
yaml_mark_t end_mark;
} yaml_token_t;
/**
* Free any memory allocated for a token object.
*
* @param[in,out] token A token object.
*/
YAML_DECLARE(void)
yaml_token_delete(yaml_token_t *token);
/** @} */
/**
* @defgroup events Events
* @{
*/
/** Event types. */
typedef enum yaml_event_type_e {
/** An empty event. */
YAML_NO_EVENT,
/** A STREAM-START event. */
YAML_STREAM_START_EVENT,
/** A STREAM-END event. */
YAML_STREAM_END_EVENT,
/** A DOCUMENT-START event. */
YAML_DOCUMENT_START_EVENT,
/** A DOCUMENT-END event. */
YAML_DOCUMENT_END_EVENT,
/** An ALIAS event. */
YAML_ALIAS_EVENT,
/** A SCALAR event. */
YAML_SCALAR_EVENT,
/** A SEQUENCE-START event. */
YAML_SEQUENCE_START_EVENT,
/** A SEQUENCE-END event. */
YAML_SEQUENCE_END_EVENT,
/** A MAPPING-START event. */
YAML_MAPPING_START_EVENT,
/** A MAPPING-END event. */
YAML_MAPPING_END_EVENT
} yaml_event_type_t;
/** The event structure. */
typedef struct yaml_event_s {
/** The event type. */
yaml_event_type_t type;
/** The event data. */
union {
/** The stream parameters (for @c YAML_STREAM_START_EVENT). */
struct {
/** The document encoding. */
yaml_encoding_t encoding;
} stream_start;
/** The document parameters (for @c YAML_DOCUMENT_START_EVENT). */
struct {
/** The version directive. */
yaml_version_directive_t *version_directive;
/** The list of tag directives. */
struct {
/** The beginning of the tag directives list. */
yaml_tag_directive_t *start;
/** The end of the tag directives list. */
yaml_tag_directive_t *end;
} tag_directives;
/** Is the document indicator implicit? */
int implicit;
} document_start;
/** The document end parameters (for @c YAML_DOCUMENT_END_EVENT). */
struct {
/** Is the document end indicator implicit? */
int implicit;
} document_end;
/** The alias parameters (for @c YAML_ALIAS_EVENT). */
struct {
/** The anchor. */
yaml_char_t *anchor;
} alias;
/** The scalar parameters (for @c YAML_SCALAR_EVENT). */
struct {
/** The anchor. */
yaml_char_t *anchor;
/** The tag. */
yaml_char_t *tag;
/** The scalar value. */
yaml_char_t *value;
/** The length of the scalar value. */
size_t length;
/** Is the tag optional for the plain style? */
int plain_implicit;
/** Is the tag optional for any non-plain style? */
int quoted_implicit;
/** The scalar style. */
yaml_scalar_style_t style;
} scalar;
/** The sequence parameters (for @c YAML_SEQUENCE_START_EVENT). */
struct {
/** The anchor. */
yaml_char_t *anchor;
/** The tag. */
yaml_char_t *tag;
/** Is the tag optional? */
int implicit;
/** The sequence style. */
yaml_sequence_style_t style;
} sequence_start;
/** The mapping parameters (for @c YAML_MAPPING_START_EVENT). */
struct {
/** The anchor. */
yaml_char_t *anchor;
/** The tag. */
yaml_char_t *tag;
/** Is the tag optional? */
int implicit;
/** The mapping style. */
yaml_mapping_style_t style;
} mapping_start;
} data;
/** The beginning of the event. */
yaml_mark_t start_mark;
/** The end of the event. */
yaml_mark_t end_mark;
} yaml_event_t;
/**
* Create the STREAM-START event.
*
* @param[out] event An empty event object.
* @param[in] encoding The stream encoding.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_stream_start_event_initialize(yaml_event_t *event,
yaml_encoding_t encoding);
/**
* Create the STREAM-END event.
*
* @param[out] event An empty event object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_stream_end_event_initialize(yaml_event_t *event);
/**
* Create the DOCUMENT-START event.
*
* The @a implicit argument is considered as a stylistic parameter and may be
* ignored by the emitter.
*
* @param[out] event An empty event object.
* @param[in] version_directive The %YAML directive value or
* @c NULL.
* @param[in] tag_directives_start The beginning of the %TAG
* directives list.
* @param[in] tag_directives_end The end of the %TAG directives
* list.
* @param[in] implicit If the document start indicator is
* implicit.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_start_event_initialize(yaml_event_t *event,
yaml_version_directive_t *version_directive,
yaml_tag_directive_t *tag_directives_start,
yaml_tag_directive_t *tag_directives_end,
int implicit);
/**
* Create the DOCUMENT-END event.
*
* The @a implicit argument is considered as a stylistic parameter and may be
* ignored by the emitter.
*
* @param[out] event An empty event object.
* @param[in] implicit If the document end indicator is implicit.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_end_event_initialize(yaml_event_t *event, int implicit);
/**
* Create an ALIAS event.
*
* @param[out] event An empty event object.
* @param[in] anchor The anchor value.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor);
/**
* Create a SCALAR event.
*
* The @a style argument may be ignored by the emitter.
*
* Either the @a tag attribute or one of the @a plain_implicit and
* @a quoted_implicit flags must be set.
*
* @param[out] event An empty event object.
* @param[in] anchor The scalar anchor or @c NULL.
* @param[in] tag The scalar tag or @c NULL.
* @param[in] value The scalar value.
* @param[in] length The length of the scalar value.
* @param[in] plain_implicit If the tag may be omitted for the plain
* style.
* @param[in] quoted_implicit If the tag may be omitted for any
* non-plain style.
* @param[in] style The scalar style.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_scalar_event_initialize(yaml_event_t *event,
yaml_char_t *anchor, yaml_char_t *tag,
yaml_char_t *value, int length,
int plain_implicit, int quoted_implicit,
yaml_scalar_style_t style);
/**
* Create a SEQUENCE-START event.
*
* The @a style argument may be ignored by the emitter.
*
* Either the @a tag attribute or the @a implicit flag must be set.
*
* @param[out] event An empty event object.
* @param[in] anchor The sequence anchor or @c NULL.
* @param[in] tag The sequence tag or @c NULL.
* @param[in] implicit If the tag may be omitted.
* @param[in] style The sequence style.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_sequence_start_event_initialize(yaml_event_t *event,
yaml_char_t *anchor, yaml_char_t *tag, int implicit,
yaml_sequence_style_t style);
/**
* Create a SEQUENCE-END event.
*
* @param[out] event An empty event object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_sequence_end_event_initialize(yaml_event_t *event);
/**
* Create a MAPPING-START event.
*
* The @a style argument may be ignored by the emitter.
*
* Either the @a tag attribute or the @a implicit flag must be set.
*
* @param[out] event An empty event object.
* @param[in] anchor The mapping anchor or @c NULL.
* @param[in] tag The mapping tag or @c NULL.
* @param[in] implicit If the tag may be omitted.
* @param[in] style The mapping style.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_mapping_start_event_initialize(yaml_event_t *event,
yaml_char_t *anchor, yaml_char_t *tag, int implicit,
yaml_mapping_style_t style);
/**
* Create a MAPPING-END event.
*
* @param[out] event An empty event object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_mapping_end_event_initialize(yaml_event_t *event);
/**
* Free any memory allocated for an event object.
*
* @param[in,out] event An event object.
*/
YAML_DECLARE(void)
yaml_event_delete(yaml_event_t *event);
/** @} */
/**
* @defgroup nodes Nodes
* @{
*/
/** The tag @c !!null with the only possible value: @c null. */
#define YAML_NULL_TAG "tag:yaml.org,2002:null"
/** The tag @c !!bool with the values: @c true and @c falce. */
#define YAML_BOOL_TAG "tag:yaml.org,2002:bool"
/** The tag @c !!str for string values. */
#define YAML_STR_TAG "tag:yaml.org,2002:str"
/** The tag @c !!int for integer values. */
#define YAML_INT_TAG "tag:yaml.org,2002:int"
/** The tag @c !!float for float values. */
#define YAML_FLOAT_TAG "tag:yaml.org,2002:float"
/** The tag @c !!timestamp for date and time values. */
#define YAML_TIMESTAMP_TAG "tag:yaml.org,2002:timestamp"
/** The tag @c !!seq is used to denote sequences. */
#define YAML_SEQ_TAG "tag:yaml.org,2002:seq"
/** The tag @c !!map is used to denote mapping. */
#define YAML_MAP_TAG "tag:yaml.org,2002:map"
/** The default scalar tag is @c !!str. */
#define YAML_DEFAULT_SCALAR_TAG YAML_STR_TAG
/** The default sequence tag is @c !!seq. */
#define YAML_DEFAULT_SEQUENCE_TAG YAML_SEQ_TAG
/** The default mapping tag is @c !!map. */
#define YAML_DEFAULT_MAPPING_TAG YAML_MAP_TAG
/** Node types. */
typedef enum yaml_node_type_e {
/** An empty node. */
YAML_NO_NODE,
/** A scalar node. */
YAML_SCALAR_NODE,
/** A sequence node. */
YAML_SEQUENCE_NODE,
/** A mapping node. */
YAML_MAPPING_NODE
} yaml_node_type_t;
/** The forward definition of a document node structure. */
typedef struct yaml_node_s yaml_node_t;
/** An element of a sequence node. */
typedef int yaml_node_item_t;
/** An element of a mapping node. */
typedef struct yaml_node_pair_s {
/** The key of the element. */
int key;
/** The value of the element. */
int value;
} yaml_node_pair_t;
/** The node structure. */
struct yaml_node_s {
/** The node type. */
yaml_node_type_t type;
/** The node tag. */
yaml_char_t *tag;
/** The node data. */
union {
/** The scalar parameters (for @c YAML_SCALAR_NODE). */
struct {
/** The scalar value. */
yaml_char_t *value;
/** The length of the scalar value. */
size_t length;
/** The scalar style. */
yaml_scalar_style_t style;
} scalar;
/** The sequence parameters (for @c YAML_SEQUENCE_NODE). */
struct {
/** The stack of sequence items. */
struct {
/** The beginning of the stack. */
yaml_node_item_t *start;
/** The end of the stack. */
yaml_node_item_t *end;
/** The top of the stack. */
yaml_node_item_t *top;
} items;
/** The sequence style. */
yaml_sequence_style_t style;
} sequence;
/** The mapping parameters (for @c YAML_MAPPING_NODE). */
struct {
/** The stack of mapping pairs (key, value). */
struct {
/** The beginning of the stack. */
yaml_node_pair_t *start;
/** The end of the stack. */
yaml_node_pair_t *end;
/** The top of the stack. */
yaml_node_pair_t *top;
} pairs;
/** The mapping style. */
yaml_mapping_style_t style;
} mapping;
} data;
/** The beginning of the node. */
yaml_mark_t start_mark;
/** The end of the node. */
yaml_mark_t end_mark;
};
/** The document structure. */
typedef struct yaml_document_s {
/** The document nodes. */
struct {
/** The beginning of the stack. */
yaml_node_t *start;
/** The end of the stack. */
yaml_node_t *end;
/** The top of the stack. */
yaml_node_t *top;
} nodes;
/** The version directive. */
yaml_version_directive_t *version_directive;
/** The list of tag directives. */
struct {
/** The beginning of the tag directives list. */
yaml_tag_directive_t *start;
/** The end of the tag directives list. */
yaml_tag_directive_t *end;
} tag_directives;
/** Is the document start indicator implicit? */
int start_implicit;
/** Is the document end indicator implicit? */
int end_implicit;
/** The beginning of the document. */
yaml_mark_t start_mark;
/** The end of the document. */
yaml_mark_t end_mark;
} yaml_document_t;
/**
* Create a YAML document.
*
* @param[out] document An empty document object.
* @param[in] version_directive The %YAML directive value or
* @c NULL.
* @param[in] tag_directives_start The beginning of the %TAG
* directives list.
* @param[in] tag_directives_end The end of the %TAG directives
* list.
* @param[in] start_implicit If the document start indicator is
* implicit.
* @param[in] end_implicit If the document end indicator is
* implicit.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_initialize(yaml_document_t *document,
yaml_version_directive_t *version_directive,
yaml_tag_directive_t *tag_directives_start,
yaml_tag_directive_t *tag_directives_end,
int start_implicit, int end_implicit);
/**
* Delete a YAML document and all its nodes.
*
* @param[in,out] document A document object.
*/
YAML_DECLARE(void)
yaml_document_delete(yaml_document_t *document);
/**
* Get a node of a YAML document.
*
* The pointer returned by this function is valid until any of the functions
* modifying the documents are called.
*
* @param[in] document A document object.
* @param[in] index The node id.
*
* @returns the node objct or @c NULL if @c node_id is out of range.
*/
YAML_DECLARE(yaml_node_t *)
yaml_document_get_node(yaml_document_t *document, int index);
/**
* Get the root of a YAML document node.
*
* The root object is the first object added to the document.
*
* The pointer returned by this function is valid until any of the functions
* modifying the documents are called.
*
* An empty document produced by the parser signifies the end of a YAML
* stream.
*
* @param[in] document A document object.
*
* @returns the node object or @c NULL if the document is empty.
*/
YAML_DECLARE(yaml_node_t *)
yaml_document_get_root_node(yaml_document_t *document);
/**
* Create a SCALAR node and attach it to the document.
*
* The @a style argument may be ignored by the emitter.
*
* @param[in,out] document A document object.
* @param[in] tag The scalar tag.
* @param[in] value The scalar value.
* @param[in] length The length of the scalar value.
* @param[in] style The scalar style.
*
* @returns the node id or @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_add_scalar(yaml_document_t *document,
yaml_char_t *tag, yaml_char_t *value, int length,
yaml_scalar_style_t style);
/**
* Create a SEQUENCE node and attach it to the document.
*
* The @a style argument may be ignored by the emitter.
*
* @param[in,out] document A document object.
* @param[in] tag The sequence tag.
* @param[in] style The sequence style.
*
* @returns the node id or @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_add_sequence(yaml_document_t *document,
yaml_char_t *tag, yaml_sequence_style_t style);
/**
* Create a MAPPING node and attach it to the document.
*
* The @a style argument may be ignored by the emitter.
*
* @param[in,out] document A document object.
* @param[in] tag The sequence tag.
* @param[in] style The sequence style.
*
* @returns the node id or @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_add_mapping(yaml_document_t *document,
yaml_char_t *tag, yaml_mapping_style_t style);
/**
* Add an item to a SEQUENCE node.
*
* @param[in,out] document A document object.
* @param[in] sequence The sequence node id.
* @param[in] item The item node id.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_append_sequence_item(yaml_document_t *document,
int sequence, int item);
/**
* Add a pair of a key and a value to a MAPPING node.
*
* @param[in,out] document A document object.
* @param[in] mapping The mapping node id.
* @param[in] key The key node id.
* @param[in] value The value node id.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_document_append_mapping_pair(yaml_document_t *document,
int mapping, int key, int value);
/** @} */
/**
* @defgroup parser Parser Definitions
* @{
*/
/**
* The prototype of a read handler.
*
* The read handler is called when the parser needs to read more bytes from the
* source. The handler should write not more than @a size bytes to the @a
* buffer. The number of written bytes should be set to the @a length variable.
*
* @param[in,out] data A pointer to an application data specified by
* yaml_parser_set_input().
* @param[out] buffer The buffer to write the data from the source.
* @param[in] size The size of the buffer.
* @param[out] size_read The actual number of bytes read from the source.
*
* @returns On success, the handler should return @c 1. If the handler failed,
* the returned value should be @c 0. On EOF, the handler should set the
* @a size_read to @c 0 and return @c 1.
*/
typedef int yaml_read_handler_t(void *data, unsigned char *buffer, size_t size,
size_t *size_read);
/**
* This structure holds information about a potential simple key.
*/
typedef struct yaml_simple_key_s {
/** Is a simple key possible? */
int possible;
/** Is a simple key required? */
int required;
/** The number of the token. */
size_t token_number;
/** The position mark. */
yaml_mark_t mark;
} yaml_simple_key_t;
/**
* The states of the parser.
*/
typedef enum yaml_parser_state_e {
/** Expect STREAM-START. */
YAML_PARSE_STREAM_START_STATE,
/** Expect the beginning of an implicit document. */
YAML_PARSE_IMPLICIT_DOCUMENT_START_STATE,
/** Expect DOCUMENT-START. */
YAML_PARSE_DOCUMENT_START_STATE,
/** Expect the content of a document. */
YAML_PARSE_DOCUMENT_CONTENT_STATE,
/** Expect DOCUMENT-END. */
YAML_PARSE_DOCUMENT_END_STATE,
/** Expect a block node. */
YAML_PARSE_BLOCK_NODE_STATE,
/** Expect a block node or indentless sequence. */
YAML_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE,
/** Expect a flow node. */
YAML_PARSE_FLOW_NODE_STATE,
/** Expect the first entry of a block sequence. */
YAML_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE,
/** Expect an entry of a block sequence. */
YAML_PARSE_BLOCK_SEQUENCE_ENTRY_STATE,
/** Expect an entry of an indentless sequence. */
YAML_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE,
/** Expect the first key of a block mapping. */
YAML_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE,
/** Expect a block mapping key. */
YAML_PARSE_BLOCK_MAPPING_KEY_STATE,
/** Expect a block mapping value. */
YAML_PARSE_BLOCK_MAPPING_VALUE_STATE,
/** Expect the first entry of a flow sequence. */
YAML_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE,
/** Expect an entry of a flow sequence. */
YAML_PARSE_FLOW_SEQUENCE_ENTRY_STATE,
/** Expect a key of an ordered mapping. */
YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE,
/** Expect a value of an ordered mapping. */
YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE,
/** Expect the and of an ordered mapping entry. */
YAML_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE,
/** Expect the first key of a flow mapping. */
YAML_PARSE_FLOW_MAPPING_FIRST_KEY_STATE,
/** Expect a key of a flow mapping. */
YAML_PARSE_FLOW_MAPPING_KEY_STATE,
/** Expect a value of a flow mapping. */
YAML_PARSE_FLOW_MAPPING_VALUE_STATE,
/** Expect an empty value of a flow mapping. */
YAML_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE,
/** Expect nothing. */
YAML_PARSE_END_STATE
} yaml_parser_state_t;
/**
* This structure holds aliases data.
*/
typedef struct yaml_alias_data_s {
/** The anchor. */
yaml_char_t *anchor;
/** The node id. */
int index;
/** The anchor mark. */
yaml_mark_t mark;
} yaml_alias_data_t;
/**
* The parser structure.
*
* All members are internal. Manage the structure using the @c yaml_parser_
* family of functions.
*/
typedef struct yaml_parser_s {
/**
* @name Error handling
* @{
*/
/** Error type. */
yaml_error_type_t error;
/** Error description. */
const char *problem;
/** The byte about which the problem occurred. */
size_t problem_offset;
/** The problematic value (@c -1 is none). */
int problem_value;
/** The problem position. */
yaml_mark_t problem_mark;
/** The error context. */
const char *context;
/** The context position. */
yaml_mark_t context_mark;
/**
* @}
*/
/**
* @name Reader stuff
* @{
*/
/** Read handler. */
yaml_read_handler_t *read_handler;
/** A pointer for passing to the read handler. */
void *read_handler_data;
/** Standard (string or file) input data. */
union {
/** String input data. */
struct {
/** The string start pointer. */
const unsigned char *start;
/** The string end pointer. */
const unsigned char *end;
/** The string current position. */
const unsigned char *current;
} string;
/** File input data. */
FILE *file;
} input;
/** EOF flag */
int eof;
/** The working buffer. */
struct {
/** The beginning of the buffer. */
yaml_char_t *start;
/** The end of the buffer. */
yaml_char_t *end;
/** The current position of the buffer. */
yaml_char_t *pointer;
/** The last filled position of the buffer. */
yaml_char_t *last;
} buffer;
/* The number of unread characters in the buffer. */
size_t unread;
/** The raw buffer. */
struct {
/** The beginning of the buffer. */
unsigned char *start;
/** The end of the buffer. */
unsigned char *end;
/** The current position of the buffer. */
unsigned char *pointer;
/** The last filled position of the buffer. */
unsigned char *last;
} raw_buffer;
/** The input encoding. */
yaml_encoding_t encoding;
/** The offset of the current position (in bytes). */
size_t offset;
/** The mark of the current position. */
yaml_mark_t mark;
/**
* @}
*/
/**
* @name Scanner stuff
* @{
*/
/** Have we started to scan the input stream? */
int stream_start_produced;
/** Have we reached the end of the input stream? */
int stream_end_produced;
/** The number of unclosed '[' and '{' indicators. */
int flow_level;
/** The tokens queue. */
struct {
/** The beginning of the tokens queue. */
yaml_token_t *start;
/** The end of the tokens queue. */
yaml_token_t *end;
/** The head of the tokens queue. */
yaml_token_t *head;
/** The tail of the tokens queue. */
yaml_token_t *tail;
} tokens;
/** The number of tokens fetched from the queue. */
size_t tokens_parsed;
/* Does the tokens queue contain a token ready for dequeueing. */
int token_available;
/** The indentation levels stack. */
struct {
/** The beginning of the stack. */
int *start;
/** The end of the stack. */
int *end;
/** The top of the stack. */
int *top;
} indents;
/** The current indentation level. */
int indent;
/** May a simple key occur at the current position? */
int simple_key_allowed;
/** The stack of simple keys. */
struct {
/** The beginning of the stack. */
yaml_simple_key_t *start;
/** The end of the stack. */
yaml_simple_key_t *end;
/** The top of the stack. */
yaml_simple_key_t *top;
} simple_keys;
/**
* @}
*/
/**
* @name Parser stuff
* @{
*/
/** The parser states stack. */
struct {
/** The beginning of the stack. */
yaml_parser_state_t *start;
/** The end of the stack. */
yaml_parser_state_t *end;
/** The top of the stack. */
yaml_parser_state_t *top;
} states;
/** The current parser state. */
yaml_parser_state_t state;
/** The stack of marks. */
struct {
/** The beginning of the stack. */
yaml_mark_t *start;
/** The end of the stack. */
yaml_mark_t *end;
/** The top of the stack. */
yaml_mark_t *top;
} marks;
/** The list of TAG directives. */
struct {
/** The beginning of the list. */
yaml_tag_directive_t *start;
/** The end of the list. */
yaml_tag_directive_t *end;
/** The top of the list. */
yaml_tag_directive_t *top;
} tag_directives;
/**
* @}
*/
/**
* @name Dumper stuff
* @{
*/
/** The alias data. */
struct {
/** The beginning of the list. */
yaml_alias_data_t *start;
/** The end of the list. */
yaml_alias_data_t *end;
/** The top of the list. */
yaml_alias_data_t *top;
} aliases;
/** The currently parsed document. */
yaml_document_t *document;
/**
* @}
*/
} yaml_parser_t;
/**
* Initialize a parser.
*
* This function creates a new parser object. An application is responsible
* for destroying the object using the yaml_parser_delete() function.
*
* @param[out] parser An empty parser object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_parser_initialize(yaml_parser_t *parser);
/**
* Destroy a parser.
*
* @param[in,out] parser A parser object.
*/
YAML_DECLARE(void)
yaml_parser_delete(yaml_parser_t *parser);
/**
* Set a string input.
*
* Note that the @a input pointer must be valid while the @a parser object
* exists. The application is responsible for destroing @a input after
* destroying the @a parser.
*
* @param[in,out] parser A parser object.
* @param[in] input A source data.
* @param[in] size The length of the source data in bytes.
*/
YAML_DECLARE(void)
yaml_parser_set_input_string(yaml_parser_t *parser,
const unsigned char *input, size_t size);
/**
* Set a file input.
*
* @a file should be a file object open for reading. The application is
* responsible for closing the @a file.
*
* @param[in,out] parser A parser object.
* @param[in] file An open file.
*/
YAML_DECLARE(void)
yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file);
/**
* Set a generic input handler.
*
* @param[in,out] parser A parser object.
* @param[in] handler A read handler.
* @param[in] data Any application data for passing to the read
* handler.
*/
YAML_DECLARE(void)
yaml_parser_set_input(yaml_parser_t *parser,
yaml_read_handler_t *handler, void *data);
/**
* Set the source encoding.
*
* @param[in,out] parser A parser object.
* @param[in] encoding The source encoding.
*/
YAML_DECLARE(void)
yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding);
/**
* Scan the input stream and produce the next token.
*
* Call the function subsequently to produce a sequence of tokens corresponding
* to the input stream. The initial token has the type
* @c YAML_STREAM_START_TOKEN while the ending token has the type
* @c YAML_STREAM_END_TOKEN.
*
* An application is responsible for freeing any buffers associated with the
* produced token object using the @c yaml_token_delete function.
*
* An application must not alternate the calls of yaml_parser_scan() with the
* calls of yaml_parser_parse() or yaml_parser_load(). Doing this will break
* the parser.
*
* @param[in,out] parser A parser object.
* @param[out] token An empty token object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_parser_scan(yaml_parser_t *parser, yaml_token_t *token);
/**
* Parse the input stream and produce the next parsing event.
*
* Call the function subsequently to produce a sequence of events corresponding
* to the input stream. The initial event has the type
* @c YAML_STREAM_START_EVENT while the ending event has the type
* @c YAML_STREAM_END_EVENT.
*
* An application is responsible for freeing any buffers associated with the
* produced event object using the yaml_event_delete() function.
*
* An application must not alternate the calls of yaml_parser_parse() with the
* calls of yaml_parser_scan() or yaml_parser_load(). Doing this will break the
* parser.
*
* @param[in,out] parser A parser object.
* @param[out] event An empty event object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_parser_parse(yaml_parser_t *parser, yaml_event_t *event);
/**
* Parse the input stream and produce the next YAML document.
*
* Call this function subsequently to produce a sequence of documents
* constituting the input stream.
*
* If the produced document has no root node, it means that the document
* end has been reached.
*
* An application is responsible for freeing any data associated with the
* produced document object using the yaml_document_delete() function.
*
* An application must not alternate the calls of yaml_parser_load() with the
* calls of yaml_parser_scan() or yaml_parser_parse(). Doing this will break
* the parser.
*
* @param[in,out] parser A parser object.
* @param[out] document An empty document object.
*
* @return @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_parser_load(yaml_parser_t *parser, yaml_document_t *document);
/** @} */
/**
* @defgroup emitter Emitter Definitions
* @{
*/
/**
* The prototype of a write handler.
*
* The write handler is called when the emitter needs to flush the accumulated
* characters to the output. The handler should write @a size bytes of the
* @a buffer to the output.
*
* @param[in,out] data A pointer to an application data specified by
* yaml_emitter_set_output().
* @param[in] buffer The buffer with bytes to be written.
* @param[in] size The size of the buffer.
*
* @returns On success, the handler should return @c 1. If the handler failed,
* the returned value should be @c 0.
*/
typedef int yaml_write_handler_t(void *data, unsigned char *buffer, size_t size);
/** The emitter states. */
typedef enum yaml_emitter_state_e {
/** Expect STREAM-START. */
YAML_EMIT_STREAM_START_STATE,
/** Expect the first DOCUMENT-START or STREAM-END. */
YAML_EMIT_FIRST_DOCUMENT_START_STATE,
/** Expect DOCUMENT-START or STREAM-END. */
YAML_EMIT_DOCUMENT_START_STATE,
/** Expect the content of a document. */
YAML_EMIT_DOCUMENT_CONTENT_STATE,
/** Expect DOCUMENT-END. */
YAML_EMIT_DOCUMENT_END_STATE,
/** Expect the first item of a flow sequence. */
YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE,
/** Expect an item of a flow sequence. */
YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE,
/** Expect the first key of a flow mapping. */
YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE,
/** Expect a key of a flow mapping. */
YAML_EMIT_FLOW_MAPPING_KEY_STATE,
/** Expect a value for a simple key of a flow mapping. */
YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE,
/** Expect a value of a flow mapping. */
YAML_EMIT_FLOW_MAPPING_VALUE_STATE,
/** Expect the first item of a block sequence. */
YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE,
/** Expect an item of a block sequence. */
YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE,
/** Expect the first key of a block mapping. */
YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE,
/** Expect the key of a block mapping. */
YAML_EMIT_BLOCK_MAPPING_KEY_STATE,
/** Expect a value for a simple key of a block mapping. */
YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE,
/** Expect a value of a block mapping. */
YAML_EMIT_BLOCK_MAPPING_VALUE_STATE,
/** Expect nothing. */
YAML_EMIT_END_STATE
} yaml_emitter_state_t;
/**
* The emitter structure.
*
* All members are internal. Manage the structure using the @c yaml_emitter_
* family of functions.
*/
typedef struct yaml_emitter_s {
/**
* @name Error handling
* @{
*/
/** Error type. */
yaml_error_type_t error;
/** Error description. */
const char *problem;
/**
* @}
*/
/**
* @name Writer stuff
* @{
*/
/** Write handler. */
yaml_write_handler_t *write_handler;
/** A pointer for passing to the white handler. */
void *write_handler_data;
/** Standard (string or file) output data. */
union {
/** String output data. */
struct {
/** The buffer pointer. */
unsigned char *buffer;
/** The buffer size. */
size_t size;
/** The number of written bytes. */
size_t *size_written;
} string;
/** File output data. */
FILE *file;
} output;
/** The working buffer. */
struct {
/** The beginning of the buffer. */
yaml_char_t *start;
/** The end of the buffer. */
yaml_char_t *end;
/** The current position of the buffer. */
yaml_char_t *pointer;
/** The last filled position of the buffer. */
yaml_char_t *last;
} buffer;
/** The raw buffer. */
struct {
/** The beginning of the buffer. */
unsigned char *start;
/** The end of the buffer. */
unsigned char *end;
/** The current position of the buffer. */
unsigned char *pointer;
/** The last filled position of the buffer. */
unsigned char *last;
} raw_buffer;
/** The stream encoding. */
yaml_encoding_t encoding;
/**
* @}
*/
/**
* @name Emitter stuff
* @{
*/
/** If the output is in the canonical style? */
int canonical;
/** The number of indentation spaces. */
int best_indent;
/** The preferred width of the output lines. */
int best_width;
/** Allow unescaped non-ASCII characters? */
int unicode;
/** The preferred line break. */
yaml_break_t line_break;
/** The stack of states. */
struct {
/** The beginning of the stack. */
yaml_emitter_state_t *start;
/** The end of the stack. */
yaml_emitter_state_t *end;
/** The top of the stack. */
yaml_emitter_state_t *top;
} states;
/** The current emitter state. */
yaml_emitter_state_t state;
/** The event queue. */
struct {
/** The beginning of the event queue. */
yaml_event_t *start;
/** The end of the event queue. */
yaml_event_t *end;
/** The head of the event queue. */
yaml_event_t *head;
/** The tail of the event queue. */
yaml_event_t *tail;
} events;
/** The stack of indentation levels. */
struct {
/** The beginning of the stack. */
int *start;
/** The end of the stack. */
int *end;
/** The top of the stack. */
int *top;
} indents;
/** The list of tag directives. */
struct {
/** The beginning of the list. */
yaml_tag_directive_t *start;
/** The end of the list. */
yaml_tag_directive_t *end;
/** The top of the list. */
yaml_tag_directive_t *top;
} tag_directives;
/** The current indentation level. */
int indent;
/** The current flow level. */
int flow_level;
/** Is it the document root context? */
int root_context;
/** Is it a sequence context? */
int sequence_context;
/** Is it a mapping context? */
int mapping_context;
/** Is it a simple mapping key context? */
int simple_key_context;
/** The current line. */
int line;
/** The current column. */
int column;
/** If the last character was a whitespace? */
int whitespace;
/** If the last character was an indentation character (' ', '-', '?', ':')? */
int indention;
/** If an explicit document end is required? */
int open_ended;
/** Anchor analysis. */
struct {
/** The anchor value. */
yaml_char_t *anchor;
/** The anchor length. */
size_t anchor_length;
/** Is it an alias? */
int alias;
} anchor_data;
/** Tag analysis. */
struct {
/** The tag handle. */
yaml_char_t *handle;
/** The tag handle length. */
size_t handle_length;
/** The tag suffix. */
yaml_char_t *suffix;
/** The tag suffix length. */
size_t suffix_length;
} tag_data;
/** Scalar analysis. */
struct {
/** The scalar value. */
yaml_char_t *value;
/** The scalar length. */
size_t length;
/** Does the scalar contain line breaks? */
int multiline;
/** Can the scalar be expessed in the flow plain style? */
int flow_plain_allowed;
/** Can the scalar be expressed in the block plain style? */
int block_plain_allowed;
/** Can the scalar be expressed in the single quoted style? */
int single_quoted_allowed;
/** Can the scalar be expressed in the literal or folded styles? */
int block_allowed;
/** The output style. */
yaml_scalar_style_t style;
} scalar_data;
/**
* @}
*/
/**
* @name Dumper stuff
* @{
*/
/** If the stream was already opened? */
int opened;
/** If the stream was already closed? */
int closed;
/** The information associated with the document nodes. */
struct {
/** The number of references. */
int references;
/** The anchor id. */
int anchor;
/** If the node has been emitted? */
int serialized;
} *anchors;
/** The last assigned anchor id. */
int last_anchor_id;
/** The currently emitted document. */
yaml_document_t *document;
/**
* @}
*/
} yaml_emitter_t;
/**
* Initialize an emitter.
*
* This function creates a new emitter object. An application is responsible
* for destroying the object using the yaml_emitter_delete() function.
*
* @param[out] emitter An empty parser object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_emitter_initialize(yaml_emitter_t *emitter);
/**
* Destroy an emitter.
*
* @param[in,out] emitter An emitter object.
*/
YAML_DECLARE(void)
yaml_emitter_delete(yaml_emitter_t *emitter);
/**
* Set a string output.
*
* The emitter will write the output characters to the @a output buffer of the
* size @a size. The emitter will set @a size_written to the number of written
* bytes. If the buffer is smaller than required, the emitter produces the
* YAML_WRITE_ERROR error.
*
* @param[in,out] emitter An emitter object.
* @param[in] output An output buffer.
* @param[in] size The buffer size.
* @param[in] size_written The pointer to save the number of written
* bytes.
*/
YAML_DECLARE(void)
yaml_emitter_set_output_string(yaml_emitter_t *emitter,
unsigned char *output, size_t size, size_t *size_written);
/**
* Set a file output.
*
* @a file should be a file object open for writing. The application is
* responsible for closing the @a file.
*
* @param[in,out] emitter An emitter object.
* @param[in] file An open file.
*/
YAML_DECLARE(void)
yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file);
/**
* Set a generic output handler.
*
* @param[in,out] emitter An emitter object.
* @param[in] handler A write handler.
* @param[in] data Any application data for passing to the write
* handler.
*/
YAML_DECLARE(void)
yaml_emitter_set_output(yaml_emitter_t *emitter,
yaml_write_handler_t *handler, void *data);
/**
* Set the output encoding.
*
* @param[in,out] emitter An emitter object.
* @param[in] encoding The output encoding.
*/
YAML_DECLARE(void)
yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding);
/**
* Set if the output should be in the "canonical" format as in the YAML
* specification.
*
* @param[in,out] emitter An emitter object.
* @param[in] canonical If the output is canonical.
*/
YAML_DECLARE(void)
yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical);
/**
* Set the indentation increment.
*
* @param[in,out] emitter An emitter object.
* @param[in] indent The indentation increment (1 < . < 10).
*/
YAML_DECLARE(void)
yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent);
/**
* Set the preferred line width. @c -1 means unlimited.
*
* @param[in,out] emitter An emitter object.
* @param[in] width The preferred line width.
*/
YAML_DECLARE(void)
yaml_emitter_set_width(yaml_emitter_t *emitter, int width);
/**
* Set if unescaped non-ASCII characters are allowed.
*
* @param[in,out] emitter An emitter object.
* @param[in] unicode If unescaped Unicode characters are allowed.
*/
YAML_DECLARE(void)
yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode);
/**
* Set the preferred line break.
*
* @param[in,out] emitter An emitter object.
* @param[in] line_break The preferred line break.
*/
YAML_DECLARE(void)
yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break);
/**
* Emit an event.
*
* The event object may be generated using the yaml_parser_parse() function.
* The emitter takes the responsibility for the event object and destroys its
* content after it is emitted. The event object is destroyed even if the
* function fails.
*
* @param[in,out] emitter An emitter object.
* @param[in,out] event An event object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
/**
* Start a YAML stream.
*
* This function should be used before yaml_emitter_dump() is called.
*
* @param[in,out] emitter An emitter object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_emitter_open(yaml_emitter_t *emitter);
/**
* Finish a YAML stream.
*
* This function should be used after yaml_emitter_dump() is called.
*
* @param[in,out] emitter An emitter object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_emitter_close(yaml_emitter_t *emitter);
/**
* Emit a YAML document.
*
* The documen object may be generated using the yaml_parser_load() function
* or the yaml_document_initialize() function. The emitter takes the
* responsibility for the document object and destoys its content after
* it is emitted. The document object is destroyedeven if the function fails.
*
* @param[in,out] emitter An emitter object.
* @param[in,out] document A document object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_emitter_dump(yaml_emitter_t *emitter, yaml_document_t *document);
/**
* Flush the accumulated characters to the output.
*
* @param[in,out] emitter An emitter object.
*
* @returns @c 1 if the function succeeded, @c 0 on error.
*/
YAML_DECLARE(int)
yaml_emitter_flush(yaml_emitter_t *emitter);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* #ifndef YAML_H */
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