835 строки
21 KiB
Go
835 строки
21 KiB
Go
/*
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package candiedyaml
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import (
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"io"
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)
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/*
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* Create a new parser object.
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*/
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func yaml_parser_initialize(parser *yaml_parser_t) bool {
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*parser = yaml_parser_t{
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raw_buffer: make([]byte, 0, INPUT_RAW_BUFFER_SIZE),
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buffer: make([]byte, 0, INPUT_BUFFER_SIZE),
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}
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return true
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}
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/*
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* Destroy a parser object.
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*/
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func yaml_parser_delete(parser *yaml_parser_t) {
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*parser = yaml_parser_t{}
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}
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/*
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* String read handler.
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*/
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func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (int, error) {
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if parser.input_pos == len(parser.input) {
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return 0, io.EOF
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}
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n := copy(buffer, parser.input[parser.input_pos:])
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parser.input_pos += n
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return n, nil
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}
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/*
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* File read handler.
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*/
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func yaml_file_read_handler(parser *yaml_parser_t, buffer []byte) (int, error) {
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return parser.input_reader.Read(buffer)
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}
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/*
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* Set a string input.
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*/
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func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) {
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if parser.read_handler != nil {
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panic("input already set")
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}
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parser.read_handler = yaml_string_read_handler
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parser.input = input
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parser.input_pos = 0
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}
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/*
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* Set a reader input
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*/
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func yaml_parser_set_input_reader(parser *yaml_parser_t, reader io.Reader) {
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if parser.read_handler != nil {
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panic("input already set")
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}
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parser.read_handler = yaml_file_read_handler
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parser.input_reader = reader
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}
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/*
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* Set a generic input.
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*/
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func yaml_parser_set_input(parser *yaml_parser_t, handler yaml_read_handler_t) {
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if parser.read_handler != nil {
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panic("input already set")
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}
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parser.read_handler = handler
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}
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/*
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* Set the source encoding.
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*/
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func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) {
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if parser.encoding != yaml_ANY_ENCODING {
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panic("encoding already set")
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}
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parser.encoding = encoding
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}
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/*
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* Create a new emitter object.
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*/
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func yaml_emitter_initialize(emitter *yaml_emitter_t) {
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*emitter = yaml_emitter_t{
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buffer: make([]byte, OUTPUT_BUFFER_SIZE),
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raw_buffer: make([]byte, 0, OUTPUT_RAW_BUFFER_SIZE),
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states: make([]yaml_emitter_state_t, 0, INITIAL_STACK_SIZE),
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events: make([]yaml_event_t, 0, INITIAL_QUEUE_SIZE),
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}
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}
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func yaml_emitter_delete(emitter *yaml_emitter_t) {
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*emitter = yaml_emitter_t{}
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}
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/*
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* String write handler.
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*/
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func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
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*emitter.output_buffer = append(*emitter.output_buffer, buffer...)
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return nil
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}
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/*
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* File write handler.
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*/
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func yaml_writer_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
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_, err := emitter.output_writer.Write(buffer)
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return err
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}
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/*
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* Set a string output.
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*/
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func yaml_emitter_set_output_string(emitter *yaml_emitter_t, buffer *[]byte) {
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if emitter.write_handler != nil {
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panic("output already set")
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}
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emitter.write_handler = yaml_string_write_handler
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emitter.output_buffer = buffer
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}
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/*
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* Set a file output.
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*/
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func yaml_emitter_set_output_writer(emitter *yaml_emitter_t, w io.Writer) {
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if emitter.write_handler != nil {
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panic("output already set")
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}
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emitter.write_handler = yaml_writer_write_handler
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emitter.output_writer = w
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}
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/*
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* Set a generic output handler.
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*/
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func yaml_emitter_set_output(emitter *yaml_emitter_t, handler yaml_write_handler_t) {
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if emitter.write_handler != nil {
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panic("output already set")
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}
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emitter.write_handler = handler
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}
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/*
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* Set the output encoding.
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*/
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func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) {
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if emitter.encoding != yaml_ANY_ENCODING {
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panic("encoding already set")
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}
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emitter.encoding = encoding
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}
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/*
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* Set the canonical output style.
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*/
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func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) {
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emitter.canonical = canonical
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}
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/*
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* Set the indentation increment.
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*/
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func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) {
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if indent < 2 || indent > 9 {
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indent = 2
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}
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emitter.best_indent = indent
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}
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/*
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* Set the preferred line width.
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*/
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func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) {
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if width < 0 {
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width = -1
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}
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emitter.best_width = width
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}
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/*
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* Set if unescaped non-ASCII characters are allowed.
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*/
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func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) {
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emitter.unicode = unicode
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}
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/*
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* Set the preferred line break character.
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*/
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func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) {
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emitter.line_break = line_break
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}
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/*
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* Destroy a token object.
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*/
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// yaml_DECLARE(void)
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// yaml_token_delete(yaml_token_t *token)
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// {
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// assert(token); /* Non-NULL token object expected. */
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//
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// switch (token.type)
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// {
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// case yaml_TAG_DIRECTIVE_TOKEN:
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// yaml_free(token.data.tag_directive.handle);
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// yaml_free(token.data.tag_directive.prefix);
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// break;
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//
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// case yaml_ALIAS_TOKEN:
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// yaml_free(token.data.alias.value);
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// break;
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//
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// case yaml_ANCHOR_TOKEN:
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// yaml_free(token.data.anchor.value);
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// break;
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//
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// case yaml_TAG_TOKEN:
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// yaml_free(token.data.tag.handle);
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// yaml_free(token.data.tag.suffix);
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// break;
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//
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// case yaml_SCALAR_TOKEN:
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// yaml_free(token.data.scalar.value);
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// break;
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//
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// default:
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// break;
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// }
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//
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// memset(token, 0, sizeof(yaml_token_t));
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// }
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/*
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* Check if a string is a valid UTF-8 sequence.
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*
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* Check 'reader.c' for more details on UTF-8 encoding.
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*/
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// static int
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// yaml_check_utf8(yaml_char_t *start, size_t length)
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// {
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// yaml_char_t *end = start+length;
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// yaml_char_t *pointer = start;
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//
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// while (pointer < end) {
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// unsigned char octet;
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// unsigned int width;
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// unsigned int value;
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// size_t k;
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//
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// octet = pointer[0];
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// width = (octet & 0x80) == 0x00 ? 1 :
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// (octet & 0xE0) == 0xC0 ? 2 :
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// (octet & 0xF0) == 0xE0 ? 3 :
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// (octet & 0xF8) == 0xF0 ? 4 : 0;
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// value = (octet & 0x80) == 0x00 ? octet & 0x7F :
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// (octet & 0xE0) == 0xC0 ? octet & 0x1F :
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// (octet & 0xF0) == 0xE0 ? octet & 0x0F :
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// (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
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// if (!width) return 0;
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// if (pointer+width > end) return 0;
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// for (k = 1; k < width; k ++) {
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// octet = pointer[k];
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// if ((octet & 0xC0) != 0x80) return 0;
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// value = (value << 6) + (octet & 0x3F);
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// }
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// if (!((width == 1) ||
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// (width == 2 && value >= 0x80) ||
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// (width == 3 && value >= 0x800) ||
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// (width == 4 && value >= 0x10000))) return 0;
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//
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// pointer += width;
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// }
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//
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// return 1;
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// }
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/*
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* Create STREAM-START.
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*/
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func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) {
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*event = yaml_event_t{
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event_type: yaml_STREAM_START_EVENT,
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encoding: encoding,
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}
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}
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/*
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* Create STREAM-END.
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*/
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func yaml_stream_end_event_initialize(event *yaml_event_t) {
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*event = yaml_event_t{
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event_type: yaml_STREAM_END_EVENT,
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}
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}
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/*
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* Create DOCUMENT-START.
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*/
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func yaml_document_start_event_initialize(event *yaml_event_t,
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version_directive *yaml_version_directive_t,
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tag_directives []yaml_tag_directive_t,
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implicit bool) {
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*event = yaml_event_t{
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event_type: yaml_DOCUMENT_START_EVENT,
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version_directive: version_directive,
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tag_directives: tag_directives,
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implicit: implicit,
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}
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}
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/*
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* Create DOCUMENT-END.
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*/
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func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) {
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*event = yaml_event_t{
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event_type: yaml_DOCUMENT_END_EVENT,
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implicit: implicit,
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}
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}
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/*
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* Create ALIAS.
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*/
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func yaml_alias_event_initialize(event *yaml_event_t, anchor []byte) {
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*event = yaml_event_t{
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event_type: yaml_ALIAS_EVENT,
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anchor: anchor,
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}
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}
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/*
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* Create SCALAR.
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*/
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func yaml_scalar_event_initialize(event *yaml_event_t,
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anchor []byte, tag []byte,
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value []byte,
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plain_implicit bool, quoted_implicit bool,
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style yaml_scalar_style_t) {
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*event = yaml_event_t{
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event_type: yaml_SCALAR_EVENT,
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anchor: anchor,
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tag: tag,
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value: value,
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implicit: plain_implicit,
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quoted_implicit: quoted_implicit,
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style: yaml_style_t(style),
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}
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}
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/*
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* Create SEQUENCE-START.
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*/
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func yaml_sequence_start_event_initialize(event *yaml_event_t,
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anchor []byte, tag []byte, implicit bool, style yaml_sequence_style_t) {
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*event = yaml_event_t{
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event_type: yaml_SEQUENCE_START_EVENT,
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anchor: anchor,
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tag: tag,
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implicit: implicit,
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style: yaml_style_t(style),
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}
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}
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/*
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* Create SEQUENCE-END.
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*/
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func yaml_sequence_end_event_initialize(event *yaml_event_t) {
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*event = yaml_event_t{
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event_type: yaml_SEQUENCE_END_EVENT,
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}
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}
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/*
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* Create MAPPING-START.
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*/
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func yaml_mapping_start_event_initialize(event *yaml_event_t,
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anchor []byte, tag []byte, implicit bool, style yaml_mapping_style_t) {
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*event = yaml_event_t{
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event_type: yaml_MAPPING_START_EVENT,
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anchor: anchor,
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tag: tag,
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implicit: implicit,
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style: yaml_style_t(style),
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}
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}
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/*
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* Create MAPPING-END.
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*/
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func yaml_mapping_end_event_initialize(event *yaml_event_t) {
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*event = yaml_event_t{
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event_type: yaml_MAPPING_END_EVENT,
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}
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}
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/*
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* Destroy an event object.
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*/
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func yaml_event_delete(event *yaml_event_t) {
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*event = yaml_event_t{}
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}
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// /*
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// * Create a document object.
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// */
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//
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// func yaml_document_initialize(document *yaml_document_t,
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// version_directive *yaml_version_directive_t,
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// tag_directives []yaml_tag_directive_t,
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// start_implicit, end_implicit bool) bool {
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//
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//
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// {
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// struct {
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// YAML_error_type_t error;
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// } context;
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// struct {
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// yaml_node_t *start;
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// yaml_node_t *end;
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// yaml_node_t *top;
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// } nodes = { NULL, NULL, NULL };
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// yaml_version_directive_t *version_directive_copy = NULL;
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// struct {
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// yaml_tag_directive_t *start;
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// yaml_tag_directive_t *end;
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// yaml_tag_directive_t *top;
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// } tag_directives_copy = { NULL, NULL, NULL };
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// yaml_tag_directive_t value = { NULL, NULL };
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// YAML_mark_t mark = { 0, 0, 0 };
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//
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// assert(document); /* Non-NULL document object is expected. */
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// assert((tag_directives_start && tag_directives_end) ||
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// (tag_directives_start == tag_directives_end));
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// /* Valid tag directives are expected. */
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//
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// if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error;
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//
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// if (version_directive) {
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// version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t));
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// if (!version_directive_copy) goto error;
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// version_directive_copy.major = version_directive.major;
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// version_directive_copy.minor = version_directive.minor;
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// }
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//
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// if (tag_directives_start != tag_directives_end) {
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// yaml_tag_directive_t *tag_directive;
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// if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
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// goto error;
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// for (tag_directive = tag_directives_start;
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// tag_directive != tag_directives_end; tag_directive ++) {
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// assert(tag_directive.handle);
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// assert(tag_directive.prefix);
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// if (!yaml_check_utf8(tag_directive.handle,
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// strlen((char *)tag_directive.handle)))
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// goto error;
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// if (!yaml_check_utf8(tag_directive.prefix,
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// strlen((char *)tag_directive.prefix)))
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// goto error;
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// value.handle = yaml_strdup(tag_directive.handle);
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// value.prefix = yaml_strdup(tag_directive.prefix);
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// if (!value.handle || !value.prefix) goto error;
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// if (!PUSH(&context, tag_directives_copy, value))
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// goto error;
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// value.handle = NULL;
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// value.prefix = NULL;
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// }
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// }
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//
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// DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
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// tag_directives_copy.start, tag_directives_copy.top,
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// start_implicit, end_implicit, mark, mark);
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//
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// return 1;
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//
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// error:
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// STACK_DEL(&context, nodes);
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// yaml_free(version_directive_copy);
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// while (!STACK_EMPTY(&context, tag_directives_copy)) {
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// yaml_tag_directive_t value = POP(&context, tag_directives_copy);
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// yaml_free(value.handle);
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// yaml_free(value.prefix);
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// }
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// STACK_DEL(&context, tag_directives_copy);
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// yaml_free(value.handle);
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// yaml_free(value.prefix);
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//
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// return 0;
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// }
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//
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// /*
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// * Destroy a document object.
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// */
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//
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// yaml_DECLARE(void)
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// yaml_document_delete(document *yaml_document_t)
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// {
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// struct {
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// YAML_error_type_t error;
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// } context;
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// yaml_tag_directive_t *tag_directive;
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//
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// context.error = yaml_NO_ERROR; /* Eliminate a compliler warning. */
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|
//
|
|
// assert(document); /* Non-NULL document object is expected. */
|
|
//
|
|
// while (!STACK_EMPTY(&context, document.nodes)) {
|
|
// yaml_node_t node = POP(&context, document.nodes);
|
|
// yaml_free(node.tag);
|
|
// switch (node.type) {
|
|
// case yaml_SCALAR_NODE:
|
|
// yaml_free(node.data.scalar.value);
|
|
// break;
|
|
// case yaml_SEQUENCE_NODE:
|
|
// STACK_DEL(&context, node.data.sequence.items);
|
|
// break;
|
|
// case yaml_MAPPING_NODE:
|
|
// STACK_DEL(&context, node.data.mapping.pairs);
|
|
// break;
|
|
// default:
|
|
// assert(0); /* Should not happen. */
|
|
// }
|
|
// }
|
|
// STACK_DEL(&context, document.nodes);
|
|
//
|
|
// yaml_free(document.version_directive);
|
|
// for (tag_directive = document.tag_directives.start;
|
|
// tag_directive != document.tag_directives.end;
|
|
// tag_directive++) {
|
|
// yaml_free(tag_directive.handle);
|
|
// yaml_free(tag_directive.prefix);
|
|
// }
|
|
// yaml_free(document.tag_directives.start);
|
|
//
|
|
// memset(document, 0, sizeof(yaml_document_t));
|
|
// }
|
|
//
|
|
// /**
|
|
// * Get a document node.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(yaml_node_t *)
|
|
// yaml_document_get_node(document *yaml_document_t, int index)
|
|
// {
|
|
// assert(document); /* Non-NULL document object is expected. */
|
|
//
|
|
// if (index > 0 && document.nodes.start + index <= document.nodes.top) {
|
|
// return document.nodes.start + index - 1;
|
|
// }
|
|
// return NULL;
|
|
// }
|
|
//
|
|
// /**
|
|
// * Get the root object.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(yaml_node_t *)
|
|
// yaml_document_get_root_node(document *yaml_document_t)
|
|
// {
|
|
// assert(document); /* Non-NULL document object is expected. */
|
|
//
|
|
// if (document.nodes.top != document.nodes.start) {
|
|
// return document.nodes.start;
|
|
// }
|
|
// return NULL;
|
|
// }
|
|
//
|
|
// /*
|
|
// * Add a scalar node to a document.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(int)
|
|
// yaml_document_add_scalar(document *yaml_document_t,
|
|
// 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;
|
|
// }
|
|
//
|
|
// /*
|
|
// * Add a sequence node to a document.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(int)
|
|
// yaml_document_add_sequence(document *yaml_document_t,
|
|
// yaml_char_t *tag, yaml_sequence_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_item_t *start;
|
|
// yaml_node_item_t *end;
|
|
// yaml_node_item_t *top;
|
|
// } items = { NULL, NULL, NULL };
|
|
// yaml_node_t node;
|
|
//
|
|
// assert(document); /* Non-NULL document object is expected. */
|
|
//
|
|
// if (!tag) {
|
|
// tag = (yaml_char_t *)yaml_DEFAULT_SEQUENCE_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, items, INITIAL_STACK_SIZE)) goto error;
|
|
//
|
|
// SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
|
|
// style, mark, mark);
|
|
// if (!PUSH(&context, document.nodes, node)) goto error;
|
|
//
|
|
// return document.nodes.top - document.nodes.start;
|
|
//
|
|
// error:
|
|
// STACK_DEL(&context, items);
|
|
// yaml_free(tag_copy);
|
|
//
|
|
// return 0;
|
|
// }
|
|
//
|
|
// /*
|
|
// * Add a mapping node to a document.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(int)
|
|
// yaml_document_add_mapping(document *yaml_document_t,
|
|
// 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;
|
|
// }
|
|
//
|
|
// /*
|
|
// * Append an item to a sequence node.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(int)
|
|
// yaml_document_append_sequence_item(document *yaml_document_t,
|
|
// int sequence, int item)
|
|
// {
|
|
// struct {
|
|
// YAML_error_type_t error;
|
|
// } context;
|
|
//
|
|
// assert(document); /* Non-NULL document is required. */
|
|
// assert(sequence > 0
|
|
// && document.nodes.start + sequence <= document.nodes.top);
|
|
// /* Valid sequence id is required. */
|
|
// assert(document.nodes.start[sequence-1].type == yaml_SEQUENCE_NODE);
|
|
// /* A sequence node is required. */
|
|
// assert(item > 0 && document.nodes.start + item <= document.nodes.top);
|
|
// /* Valid item id is required. */
|
|
//
|
|
// if (!PUSH(&context,
|
|
// document.nodes.start[sequence-1].data.sequence.items, item))
|
|
// return 0;
|
|
//
|
|
// return 1;
|
|
// }
|
|
//
|
|
// /*
|
|
// * Append a pair of a key and a value to a mapping node.
|
|
// */
|
|
//
|
|
// yaml_DECLARE(int)
|
|
// yaml_document_append_mapping_pair(document *yaml_document_t,
|
|
// int mapping, int key, int value)
|
|
// {
|
|
// struct {
|
|
// YAML_error_type_t error;
|
|
// } context;
|
|
//
|
|
// yaml_node_pair_t pair;
|
|
//
|
|
// assert(document); /* Non-NULL document is required. */
|
|
// assert(mapping > 0
|
|
// && document.nodes.start + mapping <= document.nodes.top);
|
|
// /* Valid mapping id is required. */
|
|
// assert(document.nodes.start[mapping-1].type == yaml_MAPPING_NODE);
|
|
// /* A mapping node is required. */
|
|
// assert(key > 0 && document.nodes.start + key <= document.nodes.top);
|
|
// /* Valid key id is required. */
|
|
// assert(value > 0 && document.nodes.start + value <= document.nodes.top);
|
|
// /* Valid value id is required. */
|
|
//
|
|
// pair.key = key;
|
|
// pair.value = value;
|
|
//
|
|
// if (!PUSH(&context,
|
|
// document.nodes.start[mapping-1].data.mapping.pairs, pair))
|
|
// return 0;
|
|
//
|
|
// return 1;
|
|
// }
|
|
//
|