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, INPUT_RAW_BUFFER_SIZE))
174 if (!BUFFER_INIT(parser, parser->buffer, INPUT_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 * Create a new emitter object.
344 yaml_emitter_initialize(yaml_emitter_t *emitter)
346 assert(emitter); /* Non-NULL emitter object expected. */
348 memset(emitter, 0, sizeof(yaml_emitter_t));
349 if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE))
351 if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE))
353 if (!STACK_INIT(emitter, emitter->states, INITIAL_STACK_SIZE))
355 if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE))
357 if (!STACK_INIT(emitter, emitter->indents, INITIAL_STACK_SIZE))
359 if (!STACK_INIT(emitter, emitter->tag_directives, INITIAL_STACK_SIZE))
366 BUFFER_DEL(emitter, emitter->buffer);
367 BUFFER_DEL(emitter, emitter->raw_buffer);
368 STACK_DEL(emitter, emitter->states);
369 QUEUE_DEL(emitter, emitter->events);
370 STACK_DEL(emitter, emitter->indents);
371 STACK_DEL(emitter, emitter->tag_directives);
377 * Destroy an emitter object.
381 yaml_emitter_delete(yaml_emitter_t *emitter)
383 assert(emitter); /* Non-NULL emitter object expected. */
385 BUFFER_DEL(emitter, emitter->buffer);
386 BUFFER_DEL(emitter, emitter->raw_buffer);
387 STACK_DEL(emitter, emitter->states);
388 while (!QUEUE_EMPTY(emitter, emitter->events)) {
389 yaml_event_delete(&DEQUEUE(emitter, emitter->events));
391 STACK_DEL(emitter, emitter->indents);
392 while (!STACK_EMPTY(empty, emitter->tag_directives)) {
393 yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives);
394 yaml_free(tag_directive.handle);
395 yaml_free(tag_directive.prefix);
397 STACK_DEL(emitter, emitter->tag_directives);
399 memset(emitter, 0, sizeof(yaml_emitter_t));
403 * String write handler.
407 yaml_string_write_handler(void *data, unsigned char *buffer, size_t size)
409 yaml_emitter_t *emitter = data;
411 if (emitter->output.string.size + *emitter->output.string.size_written
413 memcpy(emitter->output.string.buffer
414 + *emitter->output.string.size_written,
416 emitter->output.string.size
417 - *emitter->output.string.size_written);
418 *emitter->output.string.size_written = emitter->output.string.size;
422 memcpy(emitter->output.string.buffer
423 + *emitter->output.string.size_written, buffer, size);
424 *emitter->output.string.size_written += size;
429 * File write handler.
433 yaml_file_write_handler(void *data, unsigned char *buffer, size_t size)
435 yaml_emitter_t *emitter = data;
437 return (fwrite(buffer, 1, size, emitter->output.file) == size);
440 * Set a string output.
444 yaml_emitter_set_output_string(yaml_emitter_t *emitter,
445 unsigned char *output, size_t size, size_t *size_written)
447 assert(emitter); /* Non-NULL emitter object expected. */
448 assert(!emitter->write_handler); /* You can set the output only once. */
449 assert(output); /* Non-NULL output string expected. */
451 emitter->write_handler = yaml_string_write_handler;
452 emitter->write_handler_data = emitter;
454 emitter->output.string.buffer = output;
455 emitter->output.string.size = size;
456 emitter->output.string.size_written = size_written;
465 yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file)
467 assert(emitter); /* Non-NULL emitter object expected. */
468 assert(!emitter->write_handler); /* You can set the output only once. */
469 assert(file); /* Non-NULL file object expected. */
471 emitter->write_handler = yaml_file_write_handler;
472 emitter->write_handler_data = emitter;
474 emitter->output.file = file;
478 * Set a generic output handler.
482 yaml_emitter_set_output(yaml_emitter_t *emitter,
483 yaml_write_handler_t *handler, void *data)
485 assert(emitter); /* Non-NULL emitter object expected. */
486 assert(!emitter->write_handler); /* You can set the output only once. */
487 assert(handler); /* Non-NULL handler object expected. */
489 emitter->write_handler = handler;
490 emitter->write_handler_data = data;
494 * Set the output encoding.
498 yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding)
500 assert(emitter); /* Non-NULL emitter object expected. */
501 assert(!emitter->encoding); /* You can set encoding only once. */
503 emitter->encoding = encoding;
507 * Set the canonical output style.
511 yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)
513 assert(emitter); /* Non-NULL emitter object expected. */
515 emitter->canonical = (canonical != 0);
519 * Set the indentation increment.
523 yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)
525 assert(emitter); /* Non-NULL emitter object expected. */
527 emitter->best_indent = (1 < indent && indent < 10) ? indent : 2;
531 * Set the preferred line width.
535 yaml_emitter_set_width(yaml_emitter_t *emitter, int width)
537 assert(emitter); /* Non-NULL emitter object expected. */
539 emitter->best_width = (width > 0) ? width : 0;
543 * Set if unescaped non-ASCII characters are allowed.
547 yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)
549 assert(emitter); /* Non-NULL emitter object expected. */
551 emitter->unicode = (unicode != 0);
555 * Set the preferred line break character.
559 yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break)
561 assert(emitter); /* Non-NULL emitter object expected. */
563 emitter->line_break = line_break;
567 * Destroy a token object.
571 yaml_token_delete(yaml_token_t *token)
573 assert(token); /* Non-NULL token object expected. */
577 case YAML_TAG_DIRECTIVE_TOKEN:
578 yaml_free(token->data.tag_directive.handle);
579 yaml_free(token->data.tag_directive.prefix);
582 case YAML_ALIAS_TOKEN:
583 yaml_free(token->data.alias.value);
586 case YAML_ANCHOR_TOKEN:
587 yaml_free(token->data.anchor.value);
591 yaml_free(token->data.tag.handle);
592 yaml_free(token->data.tag.suffix);
595 case YAML_SCALAR_TOKEN:
596 yaml_free(token->data.scalar.value);
603 memset(token, 0, sizeof(yaml_token_t));
607 * Destroy an event object.
611 yaml_event_delete(yaml_event_t *event)
613 yaml_tag_directive_t *tag_directive;
615 assert(event); /* Non-NULL event object expected. */
619 case YAML_DOCUMENT_START_EVENT:
620 yaml_free(event->data.document_start.version_directive);
621 for (tag_directive = event->data.document_start.tag_directives.start;
622 tag_directive != event->data.document_start.tag_directives.end;
624 yaml_free(tag_directive->handle);
625 yaml_free(tag_directive->prefix);
627 yaml_free(event->data.document_start.tag_directives.start);
630 case YAML_ALIAS_EVENT:
631 yaml_free(event->data.alias.anchor);
634 case YAML_SCALAR_EVENT:
635 yaml_free(event->data.scalar.anchor);
636 yaml_free(event->data.scalar.tag);
637 yaml_free(event->data.scalar.value);
640 case YAML_SEQUENCE_START_EVENT:
641 yaml_free(event->data.sequence_start.anchor);
642 yaml_free(event->data.sequence_start.tag);
645 case YAML_MAPPING_START_EVENT:
646 yaml_free(event->data.mapping_start.anchor);
647 yaml_free(event->data.mapping_start.tag);
654 memset(event, 0, sizeof(yaml_event_t));