2 #include "yaml_private.h"
5 * Get the library version.
8 YAML_DECLARE(const char *)
9 yaml_get_version_string(void)
11 return YAML_VERSION_STRING;
15 * Get the library version numbers.
19 yaml_get_version(int *major, int *minor, int *patch)
21 *major = YAML_VERSION_MAJOR;
22 *minor = YAML_VERSION_MINOR;
23 *patch = YAML_VERSION_PATCH;
27 * Allocate a dynamic memory block.
31 yaml_malloc(size_t size)
33 return malloc(size ? size : 1);
37 * Reallocate a dynamic memory block.
41 yaml_realloc(void *ptr, size_t size)
43 return ptr ? realloc(ptr, size ? size : 1) : malloc(size ? size : 1);
47 * Free a dynamic memory block.
61 yaml_strdup(const char *str)
71 yaml_string_extend(yaml_char_t **start,
72 yaml_char_t **pointer, yaml_char_t **end)
74 void *new_start = yaml_realloc(*start, (*end - *start)*2);
76 if (!new_start) return 0;
78 memset(new_start + (*end - *start), 0, *end - *start);
80 *pointer = new_start + (*pointer - *start);
81 *end = new_start + (*end - *start)*2;
88 * Append a string B to a string A.
93 yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
94 yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end)
96 if (*b_start == *b_pointer)
99 while (*a_end - *a_pointer <= *b_pointer - *b_start) {
100 if (!yaml_string_extend(a_start, a_pointer, a_end))
104 memcpy(*a_pointer, *b_start, *b_pointer - *b_start);
105 *a_pointer += *b_pointer - *b_start;
115 yaml_stack_extend(void **start, void **top, void **end)
117 void *new_start = yaml_realloc(*start, (*end - *start)*2);
119 if (!new_start) return 0;
121 *top = new_start + (*top - *start);
122 *end = new_start + (*end - *start)*2;
129 * Extend or move a queue.
133 yaml_queue_extend(void **start, void **head, void **tail, void **end)
135 /* Check if we need to resize the queue. */
137 if (*start == *head && *tail == *end) {
138 void *new_start = yaml_realloc(*start, (*end - *start)*2);
140 if (!new_start) return 0;
142 *head = new_start + (*head - *start);
143 *tail = new_start + (*tail - *start);
144 *end = new_start + (*end - *start)*2;
148 /* Check if we need to move the queue at the beginning of the buffer. */
151 if (*head != *tail) {
152 memmove(*start, *head, *tail - *head);
154 *tail -= *head - *start;
163 * Create a new parser object.
167 yaml_parser_initialize(yaml_parser_t *parser)
169 assert(parser); /* Non-NULL parser object expected. */
171 memset(parser, 0, sizeof(yaml_parser_t));
172 if (!BUFFER_INIT(parser, parser->raw_buffer, RAW_BUFFER_SIZE))
174 if (!BUFFER_INIT(parser, parser->buffer, BUFFER_SIZE))
176 if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE))
178 if (!STACK_INIT(parser, parser->indents, INITIAL_STACK_SIZE))
180 if (!STACK_INIT(parser, parser->simple_keys, INITIAL_STACK_SIZE))
182 if (!STACK_INIT(parser, parser->states, INITIAL_STACK_SIZE))
184 if (!STACK_INIT(parser, parser->marks, INITIAL_STACK_SIZE))
186 if (!STACK_INIT(parser, parser->tag_directives, INITIAL_STACK_SIZE))
193 BUFFER_DEL(parser, parser->raw_buffer);
194 BUFFER_DEL(parser, parser->buffer);
195 QUEUE_DEL(parser, parser->tokens);
196 STACK_DEL(parser, parser->indents);
197 STACK_DEL(parser, parser->simple_keys);
198 STACK_DEL(parser, parser->states);
199 STACK_DEL(parser, parser->marks);
200 STACK_DEL(parser, parser->tag_directives);
206 * Destroy a parser object.
210 yaml_parser_delete(yaml_parser_t *parser)
212 assert(parser); /* Non-NULL parser object expected. */
214 BUFFER_DEL(parser, parser->raw_buffer);
215 BUFFER_DEL(parser, parser->buffer);
216 while (!QUEUE_EMPTY(parser, parser->tokens)) {
217 yaml_token_delete(&DEQUEUE(parser, parser->tokens));
219 QUEUE_DEL(parser, parser->tokens);
220 STACK_DEL(parser, parser->indents);
221 STACK_DEL(parser, parser->simple_keys);
222 STACK_DEL(parser, parser->states);
223 STACK_DEL(parser, parser->marks);
224 while (!STACK_EMPTY(parser, parser->tag_directives)) {
225 yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
226 yaml_free(tag_directive.handle);
227 yaml_free(tag_directive.prefix);
229 STACK_DEL(parser, parser->tag_directives);
231 memset(parser, 0, sizeof(yaml_parser_t));
235 * String read handler.
239 yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,
242 yaml_parser_t *parser = data;
244 if (parser->input.string.current == parser->input.string.end) {
249 if (size > (parser->input.string.end - parser->input.string.current)) {
250 size = parser->input.string.end - parser->input.string.current;
253 memcpy(buffer, parser->input.string.current, size);
254 parser->input.string.current += size;
264 yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,
267 yaml_parser_t *parser = data;
269 *size_read = fread(buffer, 1, size, parser->input.file);
270 return !ferror(parser->input.file);
274 * Set a string input.
278 yaml_parser_set_input_string(yaml_parser_t *parser,
279 unsigned char *input, size_t size)
281 assert(parser); /* Non-NULL parser object expected. */
282 assert(!parser->read_handler); /* You can set the source only once. */
283 assert(input); /* Non-NULL input string expected. */
285 parser->read_handler = yaml_string_read_handler;
286 parser->read_handler_data = parser;
288 parser->input.string.start = input;
289 parser->input.string.current = input;
290 parser->input.string.end = input+size;
298 yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)
300 assert(parser); /* Non-NULL parser object expected. */
301 assert(!parser->read_handler); /* You can set the source only once. */
302 assert(file); /* Non-NULL file object expected. */
304 parser->read_handler = yaml_file_read_handler;
305 parser->read_handler_data = parser;
307 parser->input.file = file;
311 * Set a generic input.
315 yaml_parser_set_input(yaml_parser_t *parser,
316 yaml_read_handler_t *handler, void *data)
318 assert(parser); /* Non-NULL parser object expected. */
319 assert(!parser->read_handler); /* You can set the source only once. */
320 assert(handler); /* Non-NULL read handler expected. */
322 parser->read_handler = handler;
323 parser->read_handler_data = data;
327 * Set the source encoding.
331 yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)
333 assert(parser); /* Non-NULL parser object expected. */
334 assert(!parser->encoding); /* Encoding is already set or detected. */
336 parser->encoding = encoding;
340 * Destroy a token object.
344 yaml_token_delete(yaml_token_t *token)
346 assert(token); /* Non-NULL token object expected. */
350 case YAML_TAG_DIRECTIVE_TOKEN:
351 yaml_free(token->data.tag_directive.handle);
352 yaml_free(token->data.tag_directive.prefix);
355 case YAML_ALIAS_TOKEN:
356 yaml_free(token->data.alias.value);
359 case YAML_ANCHOR_TOKEN:
360 yaml_free(token->data.anchor.value);
364 yaml_free(token->data.tag.handle);
365 yaml_free(token->data.tag.suffix);
368 case YAML_SCALAR_TOKEN:
369 yaml_free(token->data.scalar.value);
373 memset(token, 0, sizeof(yaml_token_t));
377 * Destroy an event object.
381 yaml_event_delete(yaml_event_t *event)
383 yaml_tag_directive_t *tag_directive;
385 assert(event); /* Non-NULL event object expected. */
389 case YAML_DOCUMENT_START_EVENT:
390 yaml_free(event->data.document_start.version_directive);
391 for (tag_directive = event->data.document_start.tag_directives.start;
392 tag_directive != event->data.document_start.tag_directives.end;
394 yaml_free(tag_directive->handle);
395 yaml_free(tag_directive->prefix);
397 yaml_free(event->data.document_start.tag_directives.start);
400 case YAML_ALIAS_EVENT:
401 yaml_free(event->data.alias.anchor);
404 case YAML_SCALAR_EVENT:
405 yaml_free(event->data.scalar.anchor);
406 yaml_free(event->data.scalar.tag);
407 yaml_free(event->data.scalar.value);
410 case YAML_SEQUENCE_START_EVENT:
411 yaml_free(event->data.sequence_start.anchor);
412 yaml_free(event->data.sequence_start.tag);
415 case YAML_MAPPING_START_EVENT:
416 yaml_free(event->data.mapping_start.anchor);
417 yaml_free(event->data.mapping_start.tag);
421 memset(event, 0, sizeof(yaml_event_t));