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.
60 YAML_DECLARE(yaml_char_t *)
61 yaml_strdup(const yaml_char_t *str)
66 return (yaml_char_t *)strdup((char *)str);
74 yaml_string_extend(yaml_char_t **start,
75 yaml_char_t **pointer, yaml_char_t **end)
77 yaml_char_t *new_start = yaml_realloc(*start, (*end - *start)*2);
79 if (!new_start) return 0;
81 memset(new_start + (*end - *start), 0, *end - *start);
83 *pointer = new_start + (*pointer - *start);
84 *end = new_start + (*end - *start)*2;
91 * Append a string B to a string A.
96 yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
97 yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end)
99 if (*b_start == *b_pointer)
102 while (*a_end - *a_pointer <= *b_pointer - *b_start) {
103 if (!yaml_string_extend(a_start, a_pointer, a_end))
107 memcpy(*a_pointer, *b_start, *b_pointer - *b_start);
108 *a_pointer += *b_pointer - *b_start;
118 yaml_stack_extend(void **start, void **top, void **end)
120 void *new_start = yaml_realloc(*start, ((char *)*end - (char *)*start)*2);
122 if (!new_start) return 0;
124 *top = (char *)new_start + ((char *)*top - (char *)*start);
125 *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
132 * Extend or move a queue.
136 yaml_queue_extend(void **start, void **head, void **tail, void **end)
138 /* Check if we need to resize the queue. */
140 if (*start == *head && *tail == *end) {
141 void *new_start = yaml_realloc(*start,
142 ((char *)*end - (char *)*start)*2);
144 if (!new_start) return 0;
146 *head = (char *)new_start + ((char *)*head - (char *)*start);
147 *tail = (char *)new_start + ((char *)*tail - (char *)*start);
148 *end = (char *)new_start + ((char *)*end - (char *)*start)*2;
152 /* Check if we need to move the queue at the beginning of the buffer. */
155 if (*head != *tail) {
156 memmove(*start, *head, (char *)*tail - (char *)*head);
158 *tail = (char *)*tail - (char *)*head + (char *)*start;
167 * Create a new parser object.
171 yaml_parser_initialize(yaml_parser_t *parser)
173 assert(parser); /* Non-NULL parser object expected. */
175 memset(parser, 0, sizeof(yaml_parser_t));
176 if (!BUFFER_INIT(parser, parser->raw_buffer, INPUT_RAW_BUFFER_SIZE))
178 if (!BUFFER_INIT(parser, parser->buffer, INPUT_BUFFER_SIZE))
180 if (!QUEUE_INIT(parser, parser->tokens, INITIAL_QUEUE_SIZE))
182 if (!STACK_INIT(parser, parser->indents, INITIAL_STACK_SIZE))
184 if (!STACK_INIT(parser, parser->simple_keys, INITIAL_STACK_SIZE))
186 if (!STACK_INIT(parser, parser->states, INITIAL_STACK_SIZE))
188 if (!STACK_INIT(parser, parser->marks, INITIAL_STACK_SIZE))
190 if (!STACK_INIT(parser, parser->tag_directives, INITIAL_STACK_SIZE))
197 BUFFER_DEL(parser, parser->raw_buffer);
198 BUFFER_DEL(parser, parser->buffer);
199 QUEUE_DEL(parser, parser->tokens);
200 STACK_DEL(parser, parser->indents);
201 STACK_DEL(parser, parser->simple_keys);
202 STACK_DEL(parser, parser->states);
203 STACK_DEL(parser, parser->marks);
204 STACK_DEL(parser, parser->tag_directives);
210 * Destroy a parser object.
214 yaml_parser_delete(yaml_parser_t *parser)
216 assert(parser); /* Non-NULL parser object expected. */
218 BUFFER_DEL(parser, parser->raw_buffer);
219 BUFFER_DEL(parser, parser->buffer);
220 while (!QUEUE_EMPTY(parser, parser->tokens)) {
221 yaml_token_delete(&DEQUEUE(parser, parser->tokens));
223 QUEUE_DEL(parser, parser->tokens);
224 STACK_DEL(parser, parser->indents);
225 STACK_DEL(parser, parser->simple_keys);
226 STACK_DEL(parser, parser->states);
227 STACK_DEL(parser, parser->marks);
228 while (!STACK_EMPTY(parser, parser->tag_directives)) {
229 yaml_tag_directive_t tag_directive = POP(parser, parser->tag_directives);
230 yaml_free(tag_directive.handle);
231 yaml_free(tag_directive.prefix);
233 STACK_DEL(parser, parser->tag_directives);
235 memset(parser, 0, sizeof(yaml_parser_t));
239 * String read handler.
243 yaml_string_read_handler(void *data, unsigned char *buffer, size_t size,
246 yaml_parser_t *parser = data;
248 if (parser->input.string.current == parser->input.string.end) {
253 if (size > (size_t)(parser->input.string.end
254 - parser->input.string.current)) {
255 size = parser->input.string.end - parser->input.string.current;
258 memcpy(buffer, parser->input.string.current, size);
259 parser->input.string.current += size;
269 yaml_file_read_handler(void *data, unsigned char *buffer, size_t size,
272 yaml_parser_t *parser = data;
274 *size_read = fread(buffer, 1, size, parser->input.file);
275 return !ferror(parser->input.file);
279 * Set a string input.
283 yaml_parser_set_input_string(yaml_parser_t *parser,
284 const unsigned char *input, size_t size)
286 assert(parser); /* Non-NULL parser object expected. */
287 assert(!parser->read_handler); /* You can set the source only once. */
288 assert(input); /* Non-NULL input string expected. */
290 parser->read_handler = yaml_string_read_handler;
291 parser->read_handler_data = parser;
293 parser->input.string.start = input;
294 parser->input.string.current = input;
295 parser->input.string.end = input+size;
303 yaml_parser_set_input_file(yaml_parser_t *parser, FILE *file)
305 assert(parser); /* Non-NULL parser object expected. */
306 assert(!parser->read_handler); /* You can set the source only once. */
307 assert(file); /* Non-NULL file object expected. */
309 parser->read_handler = yaml_file_read_handler;
310 parser->read_handler_data = parser;
312 parser->input.file = file;
316 * Set a generic input.
320 yaml_parser_set_input(yaml_parser_t *parser,
321 yaml_read_handler_t *handler, void *data)
323 assert(parser); /* Non-NULL parser object expected. */
324 assert(!parser->read_handler); /* You can set the source only once. */
325 assert(handler); /* Non-NULL read handler expected. */
327 parser->read_handler = handler;
328 parser->read_handler_data = data;
332 * Set the source encoding.
336 yaml_parser_set_encoding(yaml_parser_t *parser, yaml_encoding_t encoding)
338 assert(parser); /* Non-NULL parser object expected. */
339 assert(!parser->encoding); /* Encoding is already set or detected. */
341 parser->encoding = encoding;
345 * Create a new emitter object.
349 yaml_emitter_initialize(yaml_emitter_t *emitter)
351 assert(emitter); /* Non-NULL emitter object expected. */
353 memset(emitter, 0, sizeof(yaml_emitter_t));
354 if (!BUFFER_INIT(emitter, emitter->buffer, OUTPUT_BUFFER_SIZE))
356 if (!BUFFER_INIT(emitter, emitter->raw_buffer, OUTPUT_RAW_BUFFER_SIZE))
358 if (!STACK_INIT(emitter, emitter->states, INITIAL_STACK_SIZE))
360 if (!QUEUE_INIT(emitter, emitter->events, INITIAL_QUEUE_SIZE))
362 if (!STACK_INIT(emitter, emitter->indents, INITIAL_STACK_SIZE))
364 if (!STACK_INIT(emitter, emitter->tag_directives, INITIAL_STACK_SIZE))
371 BUFFER_DEL(emitter, emitter->buffer);
372 BUFFER_DEL(emitter, emitter->raw_buffer);
373 STACK_DEL(emitter, emitter->states);
374 QUEUE_DEL(emitter, emitter->events);
375 STACK_DEL(emitter, emitter->indents);
376 STACK_DEL(emitter, emitter->tag_directives);
382 * Destroy an emitter object.
386 yaml_emitter_delete(yaml_emitter_t *emitter)
388 assert(emitter); /* Non-NULL emitter object expected. */
390 BUFFER_DEL(emitter, emitter->buffer);
391 BUFFER_DEL(emitter, emitter->raw_buffer);
392 STACK_DEL(emitter, emitter->states);
393 while (!QUEUE_EMPTY(emitter, emitter->events)) {
394 yaml_event_delete(&DEQUEUE(emitter, emitter->events));
396 QUEUE_DEL(emitter, emitter->events);
397 STACK_DEL(emitter, emitter->indents);
398 while (!STACK_EMPTY(empty, emitter->tag_directives)) {
399 yaml_tag_directive_t tag_directive = POP(emitter, emitter->tag_directives);
400 yaml_free(tag_directive.handle);
401 yaml_free(tag_directive.prefix);
403 STACK_DEL(emitter, emitter->tag_directives);
404 yaml_free(emitter->anchors);
406 memset(emitter, 0, sizeof(yaml_emitter_t));
410 * String write handler.
414 yaml_string_write_handler(void *data, unsigned char *buffer, size_t size)
416 yaml_emitter_t *emitter = data;
418 if (emitter->output.string.size - *emitter->output.string.size_written
420 memcpy(emitter->output.string.buffer
421 + *emitter->output.string.size_written,
423 emitter->output.string.size
424 - *emitter->output.string.size_written);
425 *emitter->output.string.size_written = emitter->output.string.size;
429 memcpy(emitter->output.string.buffer
430 + *emitter->output.string.size_written, buffer, size);
431 *emitter->output.string.size_written += size;
436 * File write handler.
440 yaml_file_write_handler(void *data, unsigned char *buffer, size_t size)
442 yaml_emitter_t *emitter = data;
444 return (fwrite(buffer, 1, size, emitter->output.file) == size);
447 * Set a string output.
451 yaml_emitter_set_output_string(yaml_emitter_t *emitter,
452 unsigned char *output, size_t size, size_t *size_written)
454 assert(emitter); /* Non-NULL emitter object expected. */
455 assert(!emitter->write_handler); /* You can set the output only once. */
456 assert(output); /* Non-NULL output string expected. */
458 emitter->write_handler = yaml_string_write_handler;
459 emitter->write_handler_data = emitter;
461 emitter->output.string.buffer = output;
462 emitter->output.string.size = size;
463 emitter->output.string.size_written = size_written;
472 yaml_emitter_set_output_file(yaml_emitter_t *emitter, FILE *file)
474 assert(emitter); /* Non-NULL emitter object expected. */
475 assert(!emitter->write_handler); /* You can set the output only once. */
476 assert(file); /* Non-NULL file object expected. */
478 emitter->write_handler = yaml_file_write_handler;
479 emitter->write_handler_data = emitter;
481 emitter->output.file = file;
485 * Set a generic output handler.
489 yaml_emitter_set_output(yaml_emitter_t *emitter,
490 yaml_write_handler_t *handler, void *data)
492 assert(emitter); /* Non-NULL emitter object expected. */
493 assert(!emitter->write_handler); /* You can set the output only once. */
494 assert(handler); /* Non-NULL handler object expected. */
496 emitter->write_handler = handler;
497 emitter->write_handler_data = data;
501 * Set the output encoding.
505 yaml_emitter_set_encoding(yaml_emitter_t *emitter, yaml_encoding_t encoding)
507 assert(emitter); /* Non-NULL emitter object expected. */
508 assert(!emitter->encoding); /* You can set encoding only once. */
510 emitter->encoding = encoding;
514 * Set the canonical output style.
518 yaml_emitter_set_canonical(yaml_emitter_t *emitter, int canonical)
520 assert(emitter); /* Non-NULL emitter object expected. */
522 emitter->canonical = (canonical != 0);
526 * Set the indentation increment.
530 yaml_emitter_set_indent(yaml_emitter_t *emitter, int indent)
532 assert(emitter); /* Non-NULL emitter object expected. */
534 emitter->best_indent = (1 < indent && indent < 10) ? indent : 2;
538 * Set the preferred line width.
542 yaml_emitter_set_width(yaml_emitter_t *emitter, int width)
544 assert(emitter); /* Non-NULL emitter object expected. */
546 emitter->best_width = (width >= 0) ? width : -1;
550 * Set if unescaped non-ASCII characters are allowed.
554 yaml_emitter_set_unicode(yaml_emitter_t *emitter, int unicode)
556 assert(emitter); /* Non-NULL emitter object expected. */
558 emitter->unicode = (unicode != 0);
562 * Set the preferred line break character.
566 yaml_emitter_set_break(yaml_emitter_t *emitter, yaml_break_t line_break)
568 assert(emitter); /* Non-NULL emitter object expected. */
570 emitter->line_break = line_break;
574 * Destroy a token object.
578 yaml_token_delete(yaml_token_t *token)
580 assert(token); /* Non-NULL token object expected. */
584 case YAML_TAG_DIRECTIVE_TOKEN:
585 yaml_free(token->data.tag_directive.handle);
586 yaml_free(token->data.tag_directive.prefix);
589 case YAML_ALIAS_TOKEN:
590 yaml_free(token->data.alias.value);
593 case YAML_ANCHOR_TOKEN:
594 yaml_free(token->data.anchor.value);
598 yaml_free(token->data.tag.handle);
599 yaml_free(token->data.tag.suffix);
602 case YAML_SCALAR_TOKEN:
603 yaml_free(token->data.scalar.value);
610 memset(token, 0, sizeof(yaml_token_t));
614 * Check if a string is a valid UTF-8 sequence.
616 * Check 'reader.c' for more details on UTF-8 encoding.
620 yaml_check_utf8(yaml_char_t *start, size_t length)
622 yaml_char_t *end = start+length;
623 yaml_char_t *pointer = start;
625 while (pointer < end) {
632 width = (octet & 0x80) == 0x00 ? 1 :
633 (octet & 0xE0) == 0xC0 ? 2 :
634 (octet & 0xF0) == 0xE0 ? 3 :
635 (octet & 0xF8) == 0xF0 ? 4 : 0;
636 value = (octet & 0x80) == 0x00 ? octet & 0x7F :
637 (octet & 0xE0) == 0xC0 ? octet & 0x1F :
638 (octet & 0xF0) == 0xE0 ? octet & 0x0F :
639 (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
640 if (!width) return 0;
641 if (pointer+width > end) return 0;
642 for (k = 1; k < width; k ++) {
644 if ((octet & 0xC0) != 0x80) return 0;
645 value = (value << 6) + (octet & 0x3F);
647 if (!((width == 1) ||
648 (width == 2 && value >= 0x80) ||
649 (width == 3 && value >= 0x800) ||
650 (width == 4 && value >= 0x10000))) return 0;
659 * Create STREAM-START.
663 yaml_stream_start_event_initialize(yaml_event_t *event,
664 yaml_encoding_t encoding)
666 yaml_mark_t mark = { 0, 0, 0 };
668 assert(event); /* Non-NULL event object is expected. */
670 STREAM_START_EVENT_INIT(*event, encoding, mark, mark);
680 yaml_stream_end_event_initialize(yaml_event_t *event)
682 yaml_mark_t mark = { 0, 0, 0 };
684 assert(event); /* Non-NULL event object is expected. */
686 STREAM_END_EVENT_INIT(*event, mark, mark);
692 * Create DOCUMENT-START.
696 yaml_document_start_event_initialize(yaml_event_t *event,
697 yaml_version_directive_t *version_directive,
698 yaml_tag_directive_t *tag_directives_start,
699 yaml_tag_directive_t *tag_directives_end,
703 yaml_error_type_t error;
705 yaml_mark_t mark = { 0, 0, 0 };
706 yaml_version_directive_t *version_directive_copy = NULL;
708 yaml_tag_directive_t *start;
709 yaml_tag_directive_t *end;
710 yaml_tag_directive_t *top;
711 } tag_directives_copy = { NULL, NULL, NULL };
712 yaml_tag_directive_t value = { NULL, NULL };
714 assert(event); /* Non-NULL event object is expected. */
715 assert((tag_directives_start && tag_directives_end) ||
716 (tag_directives_start == tag_directives_end));
717 /* Valid tag directives are expected. */
719 if (version_directive) {
720 version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
721 if (!version_directive_copy) goto error;
722 version_directive_copy->major = version_directive->major;
723 version_directive_copy->minor = version_directive->minor;
726 if (tag_directives_start != tag_directives_end) {
727 yaml_tag_directive_t *tag_directive;
728 if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
730 for (tag_directive = tag_directives_start;
731 tag_directive != tag_directives_end; tag_directive ++) {
732 assert(tag_directive->handle);
733 assert(tag_directive->prefix);
734 if (!yaml_check_utf8(tag_directive->handle,
735 strlen((char *)tag_directive->handle)))
737 if (!yaml_check_utf8(tag_directive->prefix,
738 strlen((char *)tag_directive->prefix)))
740 value.handle = yaml_strdup(tag_directive->handle);
741 value.prefix = yaml_strdup(tag_directive->prefix);
742 if (!value.handle || !value.prefix) goto error;
743 if (!PUSH(&context, tag_directives_copy, value))
750 DOCUMENT_START_EVENT_INIT(*event, version_directive_copy,
751 tag_directives_copy.start, tag_directives_copy.top,
752 implicit, mark, mark);
757 yaml_free(version_directive_copy);
758 while (!STACK_EMPTY(context, tag_directives_copy)) {
759 yaml_tag_directive_t value = POP(context, tag_directives_copy);
760 yaml_free(value.handle);
761 yaml_free(value.prefix);
763 STACK_DEL(context, tag_directives_copy);
764 yaml_free(value.handle);
765 yaml_free(value.prefix);
771 * Create DOCUMENT-END.
775 yaml_document_end_event_initialize(yaml_event_t *event, int implicit)
777 yaml_mark_t mark = { 0, 0, 0 };
779 assert(event); /* Non-NULL emitter object is expected. */
781 DOCUMENT_END_EVENT_INIT(*event, implicit, mark, mark);
791 yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor)
793 yaml_mark_t mark = { 0, 0, 0 };
794 yaml_char_t *anchor_copy = NULL;
796 assert(event); /* Non-NULL event object is expected. */
797 assert(anchor); /* Non-NULL anchor is expected. */
799 if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0;
801 anchor_copy = yaml_strdup(anchor);
805 ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark);
815 yaml_scalar_event_initialize(yaml_event_t *event,
816 yaml_char_t *anchor, yaml_char_t *tag,
817 yaml_char_t *value, int length,
818 int plain_implicit, int quoted_implicit,
819 yaml_scalar_style_t style)
821 yaml_mark_t mark = { 0, 0, 0 };
822 yaml_char_t *anchor_copy = NULL;
823 yaml_char_t *tag_copy = NULL;
824 yaml_char_t *value_copy = NULL;
826 assert(event); /* Non-NULL event object is expected. */
827 assert(value); /* Non-NULL anchor is expected. */
830 if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
831 anchor_copy = yaml_strdup(anchor);
832 if (!anchor_copy) goto error;
836 if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
837 tag_copy = yaml_strdup(tag);
838 if (!tag_copy) goto error;
842 length = strlen((char *)value);
845 if (!yaml_check_utf8(value, length)) goto error;
846 value_copy = yaml_malloc(length+1);
847 if (!value_copy) goto error;
848 memcpy(value_copy, value, length);
849 value_copy[length] = '\0';
851 SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, length,
852 plain_implicit, quoted_implicit, style, mark, mark);
857 yaml_free(anchor_copy);
859 yaml_free(value_copy);
865 * Create SEQUENCE-START.
869 yaml_sequence_start_event_initialize(yaml_event_t *event,
870 yaml_char_t *anchor, yaml_char_t *tag, int implicit,
871 yaml_sequence_style_t style)
873 yaml_mark_t mark = { 0, 0, 0 };
874 yaml_char_t *anchor_copy = NULL;
875 yaml_char_t *tag_copy = NULL;
877 assert(event); /* Non-NULL event object is expected. */
880 if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
881 anchor_copy = yaml_strdup(anchor);
882 if (!anchor_copy) goto error;
886 if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
887 tag_copy = yaml_strdup(tag);
888 if (!tag_copy) goto error;
891 SEQUENCE_START_EVENT_INIT(*event, anchor_copy, tag_copy,
892 implicit, style, mark, mark);
897 yaml_free(anchor_copy);
904 * Create SEQUENCE-END.
908 yaml_sequence_end_event_initialize(yaml_event_t *event)
910 yaml_mark_t mark = { 0, 0, 0 };
912 assert(event); /* Non-NULL event object is expected. */
914 SEQUENCE_END_EVENT_INIT(*event, mark, mark);
920 * Create MAPPING-START.
924 yaml_mapping_start_event_initialize(yaml_event_t *event,
925 yaml_char_t *anchor, yaml_char_t *tag, int implicit,
926 yaml_mapping_style_t style)
928 yaml_mark_t mark = { 0, 0, 0 };
929 yaml_char_t *anchor_copy = NULL;
930 yaml_char_t *tag_copy = NULL;
932 assert(event); /* Non-NULL event object is expected. */
935 if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
936 anchor_copy = yaml_strdup(anchor);
937 if (!anchor_copy) goto error;
941 if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
942 tag_copy = yaml_strdup(tag);
943 if (!tag_copy) goto error;
946 MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy,
947 implicit, style, mark, mark);
952 yaml_free(anchor_copy);
959 * Create MAPPING-END.
963 yaml_mapping_end_event_initialize(yaml_event_t *event)
965 yaml_mark_t mark = { 0, 0, 0 };
967 assert(event); /* Non-NULL event object is expected. */
969 MAPPING_END_EVENT_INIT(*event, mark, mark);
975 * Destroy an event object.
979 yaml_event_delete(yaml_event_t *event)
981 yaml_tag_directive_t *tag_directive;
983 assert(event); /* Non-NULL event object expected. */
987 case YAML_DOCUMENT_START_EVENT:
988 yaml_free(event->data.document_start.version_directive);
989 for (tag_directive = event->data.document_start.tag_directives.start;
990 tag_directive != event->data.document_start.tag_directives.end;
992 yaml_free(tag_directive->handle);
993 yaml_free(tag_directive->prefix);
995 yaml_free(event->data.document_start.tag_directives.start);
998 case YAML_ALIAS_EVENT:
999 yaml_free(event->data.alias.anchor);
1002 case YAML_SCALAR_EVENT:
1003 yaml_free(event->data.scalar.anchor);
1004 yaml_free(event->data.scalar.tag);
1005 yaml_free(event->data.scalar.value);
1008 case YAML_SEQUENCE_START_EVENT:
1009 yaml_free(event->data.sequence_start.anchor);
1010 yaml_free(event->data.sequence_start.tag);
1013 case YAML_MAPPING_START_EVENT:
1014 yaml_free(event->data.mapping_start.anchor);
1015 yaml_free(event->data.mapping_start.tag);
1022 memset(event, 0, sizeof(yaml_event_t));
1026 * Create a document object.
1030 yaml_document_initialize(yaml_document_t *document,
1031 yaml_version_directive_t *version_directive,
1032 yaml_tag_directive_t *tag_directives_start,
1033 yaml_tag_directive_t *tag_directives_end,
1034 int start_implicit, int end_implicit)
1037 yaml_error_type_t error;
1043 } nodes = { NULL, NULL, NULL };
1044 yaml_version_directive_t *version_directive_copy = NULL;
1046 yaml_tag_directive_t *start;
1047 yaml_tag_directive_t *end;
1048 yaml_tag_directive_t *top;
1049 } tag_directives_copy = { NULL, NULL, NULL };
1050 yaml_tag_directive_t value = { NULL, NULL };
1051 yaml_mark_t mark = { 0, 0, 0 };
1053 assert(document); /* Non-NULL document object is expected. */
1054 assert((tag_directives_start && tag_directives_end) ||
1055 (tag_directives_start == tag_directives_end));
1056 /* Valid tag directives are expected. */
1058 if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error;
1060 if (version_directive) {
1061 version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
1062 if (!version_directive_copy) goto error;
1063 version_directive_copy->major = version_directive->major;
1064 version_directive_copy->minor = version_directive->minor;
1067 if (tag_directives_start != tag_directives_end) {
1068 yaml_tag_directive_t *tag_directive;
1069 if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
1071 for (tag_directive = tag_directives_start;
1072 tag_directive != tag_directives_end; tag_directive ++) {
1073 assert(tag_directive->handle);
1074 assert(tag_directive->prefix);
1075 if (!yaml_check_utf8(tag_directive->handle,
1076 strlen((char *)tag_directive->handle)))
1078 if (!yaml_check_utf8(tag_directive->prefix,
1079 strlen((char *)tag_directive->prefix)))
1081 value.handle = yaml_strdup(tag_directive->handle);
1082 value.prefix = yaml_strdup(tag_directive->prefix);
1083 if (!value.handle || !value.prefix) goto error;
1084 if (!PUSH(&context, tag_directives_copy, value))
1086 value.handle = NULL;
1087 value.prefix = NULL;
1091 DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
1092 tag_directives_copy.start, tag_directives_copy.top,
1093 start_implicit, end_implicit, mark, mark);
1098 STACK_DEL(&context, nodes);
1099 yaml_free(version_directive_copy);
1100 while (!STACK_EMPTY(&context, tag_directives_copy)) {
1101 yaml_tag_directive_t value = POP(&context, tag_directives_copy);
1102 yaml_free(value.handle);
1103 yaml_free(value.prefix);
1105 STACK_DEL(&context, tag_directives_copy);
1106 yaml_free(value.handle);
1107 yaml_free(value.prefix);
1113 * Destroy a document object.
1117 yaml_document_delete(yaml_document_t *document)
1120 yaml_error_type_t error;
1122 yaml_tag_directive_t *tag_directive;
1124 context.error = YAML_NO_ERROR; /* Eliminate a compliler warning. */
1126 assert(document); /* Non-NULL document object is expected. */
1128 while (!STACK_EMPTY(&context, document->nodes)) {
1129 yaml_node_t node = POP(&context, document->nodes);
1130 yaml_free(node.tag);
1131 switch (node.type) {
1132 case YAML_SCALAR_NODE:
1133 yaml_free(node.data.scalar.value);
1135 case YAML_SEQUENCE_NODE:
1136 STACK_DEL(&context, node.data.sequence.items);
1138 case YAML_MAPPING_NODE:
1139 STACK_DEL(&context, node.data.mapping.pairs);
1142 assert(0); /* Should not happen. */
1145 STACK_DEL(&context, document->nodes);
1147 yaml_free(document->version_directive);
1148 for (tag_directive = document->tag_directives.start;
1149 tag_directive != document->tag_directives.end;
1151 yaml_free(tag_directive->handle);
1152 yaml_free(tag_directive->prefix);
1154 yaml_free(document->tag_directives.start);
1156 memset(document, 0, sizeof(yaml_document_t));
1160 * Get a document node.
1163 YAML_DECLARE(yaml_node_t *)
1164 yaml_document_get_node(yaml_document_t *document, int index)
1166 assert(document); /* Non-NULL document object is expected. */
1168 if (index > 0 && document->nodes.start + index <= document->nodes.top) {
1169 return document->nodes.start + index - 1;
1175 * Get the root object.
1178 YAML_DECLARE(yaml_node_t *)
1179 yaml_document_get_root_node(yaml_document_t *document)
1181 assert(document); /* Non-NULL document object is expected. */
1183 if (document->nodes.top != document->nodes.start) {
1184 return document->nodes.start;
1190 * Add a scalar node to a document.
1194 yaml_document_add_scalar(yaml_document_t *document,
1195 yaml_char_t *tag, yaml_char_t *value, int length,
1196 yaml_scalar_style_t style)
1199 yaml_error_type_t error;
1201 yaml_mark_t mark = { 0, 0, 0 };
1202 yaml_char_t *tag_copy = NULL;
1203 yaml_char_t *value_copy = NULL;
1206 assert(document); /* Non-NULL document object is expected. */
1207 assert(value); /* Non-NULL value is expected. */
1210 tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG;
1213 if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
1214 tag_copy = yaml_strdup(tag);
1215 if (!tag_copy) goto error;
1218 length = strlen((char *)value);
1221 if (!yaml_check_utf8(value, length)) goto error;
1222 value_copy = yaml_malloc(length+1);
1223 if (!value_copy) goto error;
1224 memcpy(value_copy, value, length);
1225 value_copy[length] = '\0';
1227 SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark);
1228 if (!PUSH(&context, document->nodes, node)) goto error;
1230 return document->nodes.top - document->nodes.start;
1233 yaml_free(tag_copy);
1234 yaml_free(value_copy);
1240 * Add a sequence node to a document.
1244 yaml_document_add_sequence(yaml_document_t *document,
1245 yaml_char_t *tag, yaml_sequence_style_t style)
1248 yaml_error_type_t error;
1250 yaml_mark_t mark = { 0, 0, 0 };
1251 yaml_char_t *tag_copy = NULL;
1253 yaml_node_item_t *start;
1254 yaml_node_item_t *end;
1255 yaml_node_item_t *top;
1256 } items = { NULL, NULL, NULL };
1259 assert(document); /* Non-NULL document object is expected. */
1262 tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG;
1265 if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
1266 tag_copy = yaml_strdup(tag);
1267 if (!tag_copy) goto error;
1269 if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error;
1271 SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
1273 if (!PUSH(&context, document->nodes, node)) goto error;
1275 return document->nodes.top - document->nodes.start;
1278 STACK_DEL(&context, items);
1279 yaml_free(tag_copy);
1285 * Add a mapping node to a document.
1289 yaml_document_add_mapping(yaml_document_t *document,
1290 yaml_char_t *tag, yaml_mapping_style_t style)
1293 yaml_error_type_t error;
1295 yaml_mark_t mark = { 0, 0, 0 };
1296 yaml_char_t *tag_copy = NULL;
1298 yaml_node_pair_t *start;
1299 yaml_node_pair_t *end;
1300 yaml_node_pair_t *top;
1301 } pairs = { NULL, NULL, NULL };
1304 assert(document); /* Non-NULL document object is expected. */
1307 tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;
1310 if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
1311 tag_copy = yaml_strdup(tag);
1312 if (!tag_copy) goto error;
1314 if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error;
1316 MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
1318 if (!PUSH(&context, document->nodes, node)) goto error;
1320 return document->nodes.top - document->nodes.start;
1323 STACK_DEL(&context, pairs);
1324 yaml_free(tag_copy);
1330 * Append an item to a sequence node.
1334 yaml_document_append_sequence_item(yaml_document_t *document,
1335 int sequence, int item)
1338 yaml_error_type_t error;
1341 assert(document); /* Non-NULL document is required. */
1343 && document->nodes.start + sequence <= document->nodes.top);
1344 /* Valid sequence id is required. */
1345 assert(document->nodes.start[sequence-1].type == YAML_SEQUENCE_NODE);
1346 /* A sequence node is required. */
1347 assert(item > 0 && document->nodes.start + item <= document->nodes.top);
1348 /* Valid item id is required. */
1351 document->nodes.start[sequence-1].data.sequence.items, item))
1358 * Append a pair of a key and a value to a mapping node.
1362 yaml_document_append_mapping_pair(yaml_document_t *document,
1363 int mapping, int key, int value)
1366 yaml_error_type_t error;
1369 yaml_node_pair_t pair;
1371 assert(document); /* Non-NULL document is required. */
1373 && document->nodes.start + mapping <= document->nodes.top);
1374 /* Valid mapping id is required. */
1375 assert(document->nodes.start[mapping-1].type == YAML_MAPPING_NODE);
1376 /* A mapping node is required. */
1377 assert(key > 0 && document->nodes.start + key <= document->nodes.top);
1378 /* Valid key id is required. */
1379 assert(value > 0 && document->nodes.start + value <= document->nodes.top);
1380 /* Valid value id is required. */
1386 document->nodes.start[mapping-1].data.mapping.pairs, pair))