static int
yaml_parser_append_tag_directive(yaml_parser_t *parser,
yaml_tag_directive_t value, int allow_duplicates, yaml_mark_t mark)
{
yaml_tag_directive_t *tag_directive;
yaml_tag_directive_t copy = { NULL, NULL };
for (tag_directive = parser->tag_directives.start;
tag_directive != parser->tag_directives.top; tag_directive ++) {
if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
if (allow_duplicates)
return 1;
return yaml_parser_set_parser_error(parser,
"found duplicate %TAG directive", mark);
}
}
copy.handle = yaml_strdup(value.handle);
copy.prefix = yaml_strdup(value.prefix);
if (!copy.handle || !copy.prefix) {
parser->error = YAML_MEMORY_ERROR;
goto error;
}
if (!PUSH(parser, parser->tag_directives, copy))
goto error;
return 1;
error:
yaml_free(copy.handle);
yaml_free(copy.prefix);
return 0;
}
yaml_mapping_start_event_initialize(yaml_event_t *event,
yaml_char_t *anchor, yaml_char_t *tag, int implicit,
yaml_mapping_style_t style)
{
yaml_mark_t mark = { 0, 0, 0 };
yaml_char_t *anchor_copy = NULL;
yaml_char_t *tag_copy = NULL;
assert(event); /* Non-NULL event object is expected. */
if (anchor) {
if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
anchor_copy = yaml_strdup(anchor);
if (!anchor_copy) goto error;
}
if (tag) {
if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
tag_copy = yaml_strdup(tag);
if (!tag_copy) goto error;
}
MAPPING_START_EVENT_INIT(*event, anchor_copy, tag_copy,
implicit, style, mark, mark);
return 1;
error:
yaml_free(anchor_copy);
yaml_free(tag_copy);
return 0;
}
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)
{
yaml_mark_t mark = { 0, 0, 0 };
yaml_char_t *anchor_copy = NULL;
yaml_char_t *tag_copy = NULL;
yaml_char_t *value_copy = NULL;
assert(event); /* Non-NULL event object is expected. */
/* following line added for Haskell yaml library */
if (!value && !length) value = "";
assert(value); /* Non-NULL anchor is expected. */
if (anchor) {
if (!yaml_check_utf8(anchor, strlen((char *)anchor))) goto error;
anchor_copy = yaml_strdup(anchor);
if (!anchor_copy) goto error;
}
if (tag) {
if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
tag_copy = yaml_strdup(tag);
if (!tag_copy) goto error;
}
if (length < 0) {
length = strlen((char *)value);
}
if (!yaml_check_utf8(value, length)) goto error;
value_copy = yaml_malloc(length+1);
if (!value_copy) goto error;
memcpy(value_copy, value, length);
value_copy[length] = '\0';
SCALAR_EVENT_INIT(*event, anchor_copy, tag_copy, value_copy, length,
plain_implicit, quoted_implicit, style, mark, mark);
return 1;
error:
yaml_free(anchor_copy);
yaml_free(tag_copy);
yaml_free(value_copy);
return 0;
}
static int
yaml_parser_load_scalar(yaml_parser_t *parser, yaml_event_t *first_event)
{
yaml_node_t node;
int index;
yaml_char_t *tag = first_event->data.scalar.tag;
if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
if (!tag || strcmp((char *)tag, "!") == 0) {
yaml_free(tag);
tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SCALAR_TAG);
if (!tag) goto error;
}
SCALAR_NODE_INIT(node, tag, first_event->data.scalar.value,
first_event->data.scalar.length, first_event->data.scalar.style,
first_event->start_mark, first_event->end_mark);
if (!PUSH(parser, parser->document->nodes, node)) goto error;
index = (int)(parser->document->nodes.top - parser->document->nodes.start);
if (!yaml_parser_register_anchor(parser, index,
first_event->data.scalar.anchor)) return 0;
return index;
error:
yaml_free(tag);
yaml_free(first_event->data.scalar.anchor);
yaml_free(first_event->data.scalar.value);
return 0;
}
static int
yaml_parser_load_sequence(yaml_parser_t *parser, yaml_event_t *first_event)
{
yaml_event_t event;
yaml_node_t node;
struct {
yaml_node_item_t *start;
yaml_node_item_t *end;
yaml_node_item_t *top;
} items = { NULL, NULL, NULL };
int index, item_index;
yaml_char_t *tag = first_event->data.sequence_start.tag;
if (!STACK_LIMIT(parser, parser->document->nodes, INT_MAX-1)) goto error;
if (!tag || strcmp((char *)tag, "!") == 0) {
yaml_free(tag);
tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG);
if (!tag) goto error;
}
if (!STACK_INIT(parser, items, INITIAL_STACK_SIZE)) goto error;
SEQUENCE_NODE_INIT(node, tag, items.start, items.end,
first_event->data.sequence_start.style,
first_event->start_mark, first_event->end_mark);
if (!PUSH(parser, parser->document->nodes, node)) goto error;
index = (int)(parser->document->nodes.top - parser->document->nodes.start);
if (!yaml_parser_register_anchor(parser, index,
first_event->data.sequence_start.anchor)) return 0;
if (!yaml_parser_parse(parser, &event)) return 0;
while (event.type != YAML_SEQUENCE_END_EVENT) {
if (!STACK_LIMIT(parser,
parser->document->nodes.start[index-1].data.sequence.items,
INT_MAX-1)) return 0;
item_index = yaml_parser_load_node(parser, &event);
if (!item_index) return 0;
if (!PUSH(parser,
parser->document->nodes.start[index-1].data.sequence.items,
item_index)) return 0;
if (!yaml_parser_parse(parser, &event)) return 0;
}
parser->document->nodes.start[index-1].end_mark = event.end_mark;
return index;
error:
yaml_free(tag);
yaml_free(first_event->data.sequence_start.anchor);
return 0;
}
static int
yaml_parser_load_mapping(yaml_parser_t *parser, yaml_event_t *first_event)
{
yaml_event_t event;
yaml_node_t node;
struct {
yaml_node_pair_t *start;
yaml_node_pair_t *end;
yaml_node_pair_t *top;
} pairs = { NULL, NULL, NULL };
int index;
yaml_node_pair_t pair;
yaml_char_t *tag = first_event->data.mapping_start.tag;
if (!tag || strcmp((char *)tag, "!") == 0) {
yaml_free(tag);
tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MAPPING_TAG);
if (!tag) goto error;
}
if (!STACK_INIT(parser, pairs, INITIAL_STACK_SIZE)) goto error;
MAPPING_NODE_INIT(node, tag, pairs.start, pairs.end,
first_event->data.mapping_start.style,
first_event->start_mark, first_event->end_mark);
if (!PUSH(parser, parser->document->nodes, node)) goto error;
index = (int) (parser->document->nodes.top - parser->document->nodes.start);
if (!yaml_parser_register_anchor(parser, index,
first_event->data.mapping_start.anchor)) return 0;
if (!yaml_parser_parse(parser, &event)) return 0;
while (event.type != YAML_MAPPING_END_EVENT) {
pair.key = yaml_parser_load_node(parser, &event);
if (!pair.key) return 0;
if (!yaml_parser_parse(parser, &event)) return 0;
pair.value = yaml_parser_load_node(parser, &event);
if (!pair.value) return 0;
if (!PUSH(parser,
parser->document->nodes.start[index-1].data.mapping.pairs,
pair)) return 0;
if (!yaml_parser_parse(parser, &event)) return 0;
}
parser->document->nodes.start[index-1].end_mark = event.end_mark;
return index;
error:
yaml_free(tag);
yaml_free(first_event->data.mapping_start.anchor);
return 0;
}
static int
yaml_parser_load_merge(yaml_parser_t *parser, yaml_event_t *first_event)
{
yaml_node_t node;
yaml_char_t *tag = yaml_strdup((yaml_char_t *)YAML_DEFAULT_MERGE_TAG);
if (!tag) goto error;
MERGE_NODE_INIT(node, tag, first_event->start_mark, first_event->end_mark);
if (!PUSH(parser, parser->document->nodes, node)) goto error;
return parser->document->nodes.top - parser->document->nodes.start;
error:
yaml_free(tag);
return 0;
}
yaml_alias_event_initialize(yaml_event_t *event, yaml_char_t *anchor)
{
yaml_mark_t mark = { 0, 0, 0 };
yaml_char_t *anchor_copy = NULL;
assert(event); /* Non-NULL event object is expected. */
assert(anchor); /* Non-NULL anchor is expected. */
if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0;
anchor_copy = yaml_strdup(anchor);
if (!anchor_copy)
return 0;
ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark);
return 1;
}
yaml_document_add_scalar(yaml_document_t *document,
yaml_char_t *tag, yaml_char_t *value, int length,
yaml_scalar_style_t style)
{
struct {
yaml_error_type_t error;
} context;
yaml_mark_t mark = { 0, 0, 0 };
yaml_char_t *tag_copy = NULL;
yaml_char_t *value_copy = NULL;
yaml_node_t node;
assert(document); /* Non-NULL document object is expected. */
assert(value); /* Non-NULL value is expected. */
if (!tag) {
tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG;
}
if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
tag_copy = yaml_strdup(tag);
if (!tag_copy) goto error;
if (length < 0) {
length = strlen((char *)value);
}
if (!yaml_check_utf8(value, length)) goto error;
value_copy = yaml_malloc(length+1);
if (!value_copy) goto error;
memcpy(value_copy, value, length);
value_copy[length] = '\0';
SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark);
if (!PUSH(&context, document->nodes, node)) goto error;
return document->nodes.top - document->nodes.start;
error:
yaml_free(tag_copy);
yaml_free(value_copy);
return 0;
}
yaml_document_add_mapping(yaml_document_t *document,
yaml_char_t *tag, yaml_mapping_style_t style)
{
struct {
yaml_error_type_t error;
} context;
yaml_mark_t mark = { 0, 0, 0 };
yaml_char_t *tag_copy = NULL;
struct {
yaml_node_pair_t *start;
yaml_node_pair_t *end;
yaml_node_pair_t *top;
} pairs = { NULL, NULL, NULL };
yaml_node_t node;
assert(document); /* Non-NULL document object is expected. */
if (!tag) {
tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG;
}
if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error;
tag_copy = yaml_strdup(tag);
if (!tag_copy) goto error;
if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error;
MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
style, mark, mark);
if (!PUSH(&context, document->nodes, node)) goto error;
return document->nodes.top - document->nodes.start;
error:
STACK_DEL(&context, pairs);
yaml_free(tag_copy);
return 0;
}
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)
{
struct {
yaml_error_type_t error;
} context;
yaml_mark_t mark = { 0, 0, 0 };
yaml_version_directive_t *version_directive_copy = NULL;
struct {
yaml_tag_directive_t *start;
yaml_tag_directive_t *end;
yaml_tag_directive_t *top;
} tag_directives_copy = { NULL, NULL, NULL };
yaml_tag_directive_t value = { NULL, NULL };
assert(event); /* Non-NULL event object is expected. */
assert((tag_directives_start && tag_directives_end) ||
(tag_directives_start == tag_directives_end));
/* Valid tag directives are expected. */
if (version_directive) {
version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
if (!version_directive_copy) goto error;
version_directive_copy->major = version_directive->major;
version_directive_copy->minor = version_directive->minor;
}
if (tag_directives_start != tag_directives_end) {
yaml_tag_directive_t *tag_directive;
if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
goto error;
for (tag_directive = tag_directives_start;
tag_directive != tag_directives_end; tag_directive ++) {
assert(tag_directive->handle);
assert(tag_directive->prefix);
if (!yaml_check_utf8(tag_directive->handle,
strlen((char *)tag_directive->handle)))
goto error;
if (!yaml_check_utf8(tag_directive->prefix,
strlen((char *)tag_directive->prefix)))
goto error;
value.handle = yaml_strdup(tag_directive->handle);
value.prefix = yaml_strdup(tag_directive->prefix);
if (!value.handle || !value.prefix) goto error;
if (!PUSH(&context, tag_directives_copy, value))
goto error;
value.handle = NULL;
value.prefix = NULL;
}
}
DOCUMENT_START_EVENT_INIT(*event, version_directive_copy,
tag_directives_copy.start, tag_directives_copy.top,
implicit, mark, mark);
return 1;
error:
yaml_free(version_directive_copy);
while (!STACK_EMPTY(context, tag_directives_copy)) {
yaml_tag_directive_t value = POP(context, tag_directives_copy);
yaml_free(value.handle);
yaml_free(value.prefix);
}
STACK_DEL(context, tag_directives_copy);
yaml_free(value.handle);
yaml_free(value.prefix);
return 0;
}
