2359 lines
65 KiB
C
2359 lines
65 KiB
C
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#include "yaml_private.h"
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/*
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* Flush the buffer if needed.
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*/
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#define FLUSH(emitter) \
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((emitter->buffer.pointer+5 < emitter->buffer.end) \
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|| yaml_emitter_flush(emitter))
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/*
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* Put a character to the output buffer.
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*/
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#define PUT(emitter,value) \
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(FLUSH(emitter) \
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&& (*(emitter->buffer.pointer++) = (yaml_char_t)(value), \
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emitter->column++, \
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1))
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/*
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* Put a line break to the output buffer.
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*/
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#define PUT_BREAK(emitter) \
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(FLUSH(emitter) \
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&& ((emitter->line_break == YAML_CR_BREAK ? \
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(*(emitter->buffer.pointer++) = (yaml_char_t) '\r') : \
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emitter->line_break == YAML_LN_BREAK ? \
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(*(emitter->buffer.pointer++) = (yaml_char_t) '\n') : \
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emitter->line_break == YAML_CRLN_BREAK ? \
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(*(emitter->buffer.pointer++) = (yaml_char_t) '\r', \
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*(emitter->buffer.pointer++) = (yaml_char_t) '\n') : 0), \
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emitter->column = 0, \
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emitter->line ++, \
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1))
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/*
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* Copy a character from a string into buffer.
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*/
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#define WRITE(emitter,string) \
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(FLUSH(emitter) \
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&& (COPY(emitter->buffer,string), \
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emitter->column ++, \
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1))
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/*
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* Copy a line break character from a string into buffer.
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*/
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#define WRITE_BREAK(emitter,string) \
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(FLUSH(emitter) \
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&& (CHECK(string,'\n') ? \
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(PUT_BREAK(emitter), \
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string.pointer ++, \
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1) : \
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(COPY(emitter->buffer,string), \
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emitter->column = 0, \
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emitter->line ++, \
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1)))
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/*
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* API functions.
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*/
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YAML_DECLARE(int)
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yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event);
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/*
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* Utility functions.
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*/
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static int
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yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem);
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static int
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yaml_emitter_need_more_events(yaml_emitter_t *emitter);
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static int
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yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
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yaml_tag_directive_t value, int allow_duplicates);
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static int
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yaml_emitter_increase_indent(yaml_emitter_t *emitter,
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int flow, int indentless);
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/*
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* State functions.
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*/
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static int
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yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event);
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static int
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yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
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yaml_event_t *event);
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static int
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yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
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yaml_event_t *event, int first);
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static int
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yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
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yaml_event_t *event);
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static int
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yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
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yaml_event_t *event);
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static int
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yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
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yaml_event_t *event, int first);
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static int
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yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
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yaml_event_t *event, int first);
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static int
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yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
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yaml_event_t *event, int simple);
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static int
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yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
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yaml_event_t *event, int first);
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static int
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yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
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yaml_event_t *event, int first);
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static int
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yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
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yaml_event_t *event, int simple);
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static int
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yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
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int root, int sequence, int mapping, int simple_key);
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static int
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yaml_emitter_emit_alias(yaml_emitter_t *emitter, yaml_event_t *event);
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static int
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yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event);
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static int
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yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event);
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static int
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yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event);
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/*
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* Checkers.
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*/
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static int
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yaml_emitter_check_empty_document(yaml_emitter_t *emitter);
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static int
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yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter);
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static int
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yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter);
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static int
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yaml_emitter_check_simple_key(yaml_emitter_t *emitter);
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static int
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yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event);
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/*
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* Processors.
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*/
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static int
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yaml_emitter_process_anchor(yaml_emitter_t *emitter);
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static int
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yaml_emitter_process_tag(yaml_emitter_t *emitter);
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static int
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yaml_emitter_process_scalar(yaml_emitter_t *emitter);
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/*
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* Analyzers.
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*/
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static int
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yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
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yaml_version_directive_t version_directive);
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static int
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yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
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yaml_tag_directive_t tag_directive);
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static int
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yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
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yaml_char_t *anchor, int alias);
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static int
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yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
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yaml_char_t *tag);
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static int
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yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length);
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static int
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yaml_emitter_analyze_event(yaml_emitter_t *emitter,
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yaml_event_t *event);
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/*
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* Writers.
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*/
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static int
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yaml_emitter_write_bom(yaml_emitter_t *emitter);
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static int
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yaml_emitter_write_indent(yaml_emitter_t *emitter);
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static int
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yaml_emitter_write_indicator(yaml_emitter_t *emitter,
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const char *indicator, int need_whitespace,
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int is_whitespace, int is_indention);
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static int
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yaml_emitter_write_anchor(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length);
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static int
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yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length);
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static int
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yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length, int need_whitespace);
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static int
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yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length, int allow_breaks);
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static int
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yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length, int allow_breaks);
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static int
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yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length, int allow_breaks);
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static int
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yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
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yaml_string_t string);
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static int
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yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length);
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static int
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yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
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yaml_char_t *value, size_t length);
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/*
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* Set an emitter error and return 0.
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*/
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static int
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yaml_emitter_set_emitter_error(yaml_emitter_t *emitter, const char *problem)
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{
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emitter->error = YAML_EMITTER_ERROR;
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emitter->problem = problem;
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return 0;
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}
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/*
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* Emit an event.
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*/
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YAML_DECLARE(int)
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yaml_emitter_emit(yaml_emitter_t *emitter, yaml_event_t *event)
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{
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if (!ENQUEUE(emitter, emitter->events, *event)) {
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yaml_event_delete(event);
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return 0;
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}
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while (!yaml_emitter_need_more_events(emitter)) {
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if (!yaml_emitter_analyze_event(emitter, emitter->events.head))
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return 0;
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if (!yaml_emitter_state_machine(emitter, emitter->events.head))
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return 0;
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yaml_event_delete(&DEQUEUE(emitter, emitter->events));
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}
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return 1;
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}
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/*
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* Check if we need to accumulate more events before emitting.
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*
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* We accumulate extra
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* - 1 event for DOCUMENT-START
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* - 2 events for SEQUENCE-START
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* - 3 events for MAPPING-START
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*/
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static int
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yaml_emitter_need_more_events(yaml_emitter_t *emitter)
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{
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int level = 0;
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int accumulate = 0;
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yaml_event_t *event;
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if (QUEUE_EMPTY(emitter, emitter->events))
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return 1;
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switch (emitter->events.head->type) {
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case YAML_DOCUMENT_START_EVENT:
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accumulate = 1;
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break;
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case YAML_SEQUENCE_START_EVENT:
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accumulate = 2;
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break;
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case YAML_MAPPING_START_EVENT:
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accumulate = 3;
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break;
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default:
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return 0;
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}
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if (emitter->events.tail - emitter->events.head > accumulate)
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return 0;
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for (event = emitter->events.head; event != emitter->events.tail; event ++) {
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switch (event->type) {
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case YAML_STREAM_START_EVENT:
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case YAML_DOCUMENT_START_EVENT:
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case YAML_SEQUENCE_START_EVENT:
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case YAML_MAPPING_START_EVENT:
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level += 1;
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break;
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case YAML_STREAM_END_EVENT:
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case YAML_DOCUMENT_END_EVENT:
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case YAML_SEQUENCE_END_EVENT:
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case YAML_MAPPING_END_EVENT:
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level -= 1;
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break;
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default:
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break;
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}
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if (!level)
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return 0;
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}
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return 1;
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}
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/*
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* Append a directive to the directives stack.
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*/
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static int
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yaml_emitter_append_tag_directive(yaml_emitter_t *emitter,
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yaml_tag_directive_t value, int allow_duplicates)
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{
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yaml_tag_directive_t *tag_directive;
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yaml_tag_directive_t copy = { NULL, NULL };
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for (tag_directive = emitter->tag_directives.start;
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tag_directive != emitter->tag_directives.top; tag_directive ++) {
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if (strcmp((char *)value.handle, (char *)tag_directive->handle) == 0) {
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if (allow_duplicates)
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return 1;
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return yaml_emitter_set_emitter_error(emitter,
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"duplicate %TAG directive");
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}
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}
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copy.handle = yaml_strdup(value.handle);
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copy.prefix = yaml_strdup(value.prefix);
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if (!copy.handle || !copy.prefix) {
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emitter->error = YAML_MEMORY_ERROR;
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goto error;
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}
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if (!PUSH(emitter, emitter->tag_directives, copy))
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goto error;
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return 1;
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error:
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yaml_free(copy.handle);
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yaml_free(copy.prefix);
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return 0;
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}
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/*
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* Increase the indentation level.
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*/
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static int
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yaml_emitter_increase_indent(yaml_emitter_t *emitter,
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int flow, int indentless)
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{
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if (!PUSH(emitter, emitter->indents, emitter->indent))
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return 0;
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if (emitter->indent < 0) {
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emitter->indent = flow ? emitter->best_indent : 0;
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}
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else if (!indentless) {
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emitter->indent += emitter->best_indent;
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}
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return 1;
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}
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/*
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* State dispatcher.
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*/
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static int
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yaml_emitter_state_machine(yaml_emitter_t *emitter, yaml_event_t *event)
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{
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switch (emitter->state)
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{
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case YAML_EMIT_STREAM_START_STATE:
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return yaml_emitter_emit_stream_start(emitter, event);
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case YAML_EMIT_FIRST_DOCUMENT_START_STATE:
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return yaml_emitter_emit_document_start(emitter, event, 1);
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case YAML_EMIT_DOCUMENT_START_STATE:
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return yaml_emitter_emit_document_start(emitter, event, 0);
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case YAML_EMIT_DOCUMENT_CONTENT_STATE:
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return yaml_emitter_emit_document_content(emitter, event);
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case YAML_EMIT_DOCUMENT_END_STATE:
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return yaml_emitter_emit_document_end(emitter, event);
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case YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE:
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return yaml_emitter_emit_flow_sequence_item(emitter, event, 1);
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case YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE:
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return yaml_emitter_emit_flow_sequence_item(emitter, event, 0);
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case YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE:
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return yaml_emitter_emit_flow_mapping_key(emitter, event, 1);
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case YAML_EMIT_FLOW_MAPPING_KEY_STATE:
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return yaml_emitter_emit_flow_mapping_key(emitter, event, 0);
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case YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE:
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return yaml_emitter_emit_flow_mapping_value(emitter, event, 1);
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case YAML_EMIT_FLOW_MAPPING_VALUE_STATE:
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return yaml_emitter_emit_flow_mapping_value(emitter, event, 0);
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case YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE:
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return yaml_emitter_emit_block_sequence_item(emitter, event, 1);
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case YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
|
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return yaml_emitter_emit_block_sequence_item(emitter, event, 0);
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|
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case YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE:
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return yaml_emitter_emit_block_mapping_key(emitter, event, 1);
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case YAML_EMIT_BLOCK_MAPPING_KEY_STATE:
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return yaml_emitter_emit_block_mapping_key(emitter, event, 0);
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|
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case YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE:
|
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return yaml_emitter_emit_block_mapping_value(emitter, event, 1);
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|
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case YAML_EMIT_BLOCK_MAPPING_VALUE_STATE:
|
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return yaml_emitter_emit_block_mapping_value(emitter, event, 0);
|
|
|
|
case YAML_EMIT_END_STATE:
|
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return yaml_emitter_set_emitter_error(emitter,
|
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"expected nothing after STREAM-END");
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|
|
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default:
|
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assert(1); /* Invalid state. */
|
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}
|
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|
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return 0;
|
|
}
|
|
|
|
/*
|
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* Expect STREAM-START.
|
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*/
|
|
|
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static int
|
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yaml_emitter_emit_stream_start(yaml_emitter_t *emitter,
|
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yaml_event_t *event)
|
|
{
|
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emitter->open_ended = 0;
|
|
if (event->type == YAML_STREAM_START_EVENT)
|
|
{
|
|
if (!emitter->encoding) {
|
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emitter->encoding = event->data.stream_start.encoding;
|
|
}
|
|
|
|
if (!emitter->encoding) {
|
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emitter->encoding = YAML_UTF8_ENCODING;
|
|
}
|
|
|
|
if (emitter->best_indent < 2 || emitter->best_indent > 9) {
|
|
emitter->best_indent = 2;
|
|
}
|
|
|
|
if (emitter->best_width >= 0
|
|
&& emitter->best_width <= emitter->best_indent*2) {
|
|
emitter->best_width = 80;
|
|
}
|
|
|
|
if (emitter->best_width < 0) {
|
|
emitter->best_width = INT_MAX;
|
|
}
|
|
|
|
if (!emitter->line_break) {
|
|
emitter->line_break = YAML_LN_BREAK;
|
|
}
|
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|
|
emitter->indent = -1;
|
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|
|
emitter->line = 0;
|
|
emitter->column = 0;
|
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emitter->whitespace = 1;
|
|
emitter->indention = 1;
|
|
|
|
if (emitter->encoding != YAML_UTF8_ENCODING) {
|
|
if (!yaml_emitter_write_bom(emitter))
|
|
return 0;
|
|
}
|
|
|
|
emitter->state = YAML_EMIT_FIRST_DOCUMENT_START_STATE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"expected STREAM-START");
|
|
}
|
|
|
|
/*
|
|
* Expect DOCUMENT-START or STREAM-END.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_document_start(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int first)
|
|
{
|
|
if (event->type == YAML_DOCUMENT_START_EVENT)
|
|
{
|
|
yaml_tag_directive_t default_tag_directives[] = {
|
|
{(yaml_char_t *)"!", (yaml_char_t *)"!"},
|
|
{(yaml_char_t *)"!!", (yaml_char_t *)"tag:yaml.org,2002:"},
|
|
{NULL, NULL}
|
|
};
|
|
yaml_tag_directive_t *tag_directive;
|
|
int implicit;
|
|
|
|
if (event->data.document_start.version_directive) {
|
|
if (!yaml_emitter_analyze_version_directive(emitter,
|
|
*event->data.document_start.version_directive))
|
|
return 0;
|
|
}
|
|
|
|
for (tag_directive = event->data.document_start.tag_directives.start;
|
|
tag_directive != event->data.document_start.tag_directives.end;
|
|
tag_directive ++) {
|
|
if (!yaml_emitter_analyze_tag_directive(emitter, *tag_directive))
|
|
return 0;
|
|
if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 0))
|
|
return 0;
|
|
}
|
|
|
|
for (tag_directive = default_tag_directives;
|
|
tag_directive->handle; tag_directive ++) {
|
|
if (!yaml_emitter_append_tag_directive(emitter, *tag_directive, 1))
|
|
return 0;
|
|
}
|
|
|
|
implicit = event->data.document_start.implicit;
|
|
if (!first || emitter->canonical) {
|
|
implicit = 0;
|
|
}
|
|
|
|
if ((event->data.document_start.version_directive ||
|
|
(event->data.document_start.tag_directives.start
|
|
!= event->data.document_start.tag_directives.end)) &&
|
|
emitter->open_ended)
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
emitter->open_ended = 0;
|
|
|
|
if (event->data.document_start.version_directive) {
|
|
implicit = 0;
|
|
if (!yaml_emitter_write_indicator(emitter, "%YAML", 1, 0, 0))
|
|
return 0;
|
|
if (event->data.document_start.version_directive->minor == 1) {
|
|
if (!yaml_emitter_write_indicator(emitter, "1.1", 1, 0, 0))
|
|
return 0;
|
|
}
|
|
else {
|
|
if (!yaml_emitter_write_indicator(emitter, "1.2", 1, 0, 0))
|
|
return 0;
|
|
}
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
|
|
if (event->data.document_start.tag_directives.start
|
|
!= event->data.document_start.tag_directives.end) {
|
|
implicit = 0;
|
|
for (tag_directive = event->data.document_start.tag_directives.start;
|
|
tag_directive != event->data.document_start.tag_directives.end;
|
|
tag_directive ++) {
|
|
if (!yaml_emitter_write_indicator(emitter, "%TAG", 1, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_tag_handle(emitter, tag_directive->handle,
|
|
strlen((char *)tag_directive->handle)))
|
|
return 0;
|
|
if (!yaml_emitter_write_tag_content(emitter, tag_directive->prefix,
|
|
strlen((char *)tag_directive->prefix), 1))
|
|
return 0;
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (yaml_emitter_check_empty_document(emitter)) {
|
|
implicit = 0;
|
|
}
|
|
|
|
if (!implicit) {
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_write_indicator(emitter, "---", 1, 0, 0))
|
|
return 0;
|
|
if (emitter->canonical) {
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
emitter->state = YAML_EMIT_DOCUMENT_CONTENT_STATE;
|
|
|
|
emitter->open_ended = 0;
|
|
return 1;
|
|
}
|
|
|
|
else if (event->type == YAML_STREAM_END_EVENT)
|
|
{
|
|
|
|
/**
|
|
* This can happen if a block scalar with trailing empty lines
|
|
* is at the end of the stream
|
|
*/
|
|
if (emitter->open_ended == 2)
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
|
|
return 0;
|
|
emitter->open_ended = 0;
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
if (!yaml_emitter_flush(emitter))
|
|
return 0;
|
|
|
|
emitter->state = YAML_EMIT_END_STATE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"expected DOCUMENT-START or STREAM-END");
|
|
}
|
|
|
|
/*
|
|
* Expect the root node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_document_content(yaml_emitter_t *emitter,
|
|
yaml_event_t *event)
|
|
{
|
|
if (!PUSH(emitter, emitter->states, YAML_EMIT_DOCUMENT_END_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 1, 0, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* Expect DOCUMENT-END.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_document_end(yaml_emitter_t *emitter,
|
|
yaml_event_t *event)
|
|
{
|
|
if (event->type == YAML_DOCUMENT_END_EVENT)
|
|
{
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
if (!event->data.document_end.implicit) {
|
|
if (!yaml_emitter_write_indicator(emitter, "...", 1, 0, 0))
|
|
return 0;
|
|
emitter->open_ended = 0;
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
else if (!emitter->open_ended)
|
|
emitter->open_ended = 1;
|
|
if (!yaml_emitter_flush(emitter))
|
|
return 0;
|
|
|
|
emitter->state = YAML_EMIT_DOCUMENT_START_STATE;
|
|
|
|
while (!STACK_EMPTY(emitter, emitter->tag_directives)) {
|
|
yaml_tag_directive_t tag_directive = POP(emitter,
|
|
emitter->tag_directives);
|
|
yaml_free(tag_directive.handle);
|
|
yaml_free(tag_directive.prefix);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"expected DOCUMENT-END");
|
|
}
|
|
|
|
/*
|
|
*
|
|
* Expect a flow item node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_flow_sequence_item(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int first)
|
|
{
|
|
if (first)
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "[", 1, 1, 0))
|
|
return 0;
|
|
if (!yaml_emitter_increase_indent(emitter, 1, 0))
|
|
return 0;
|
|
emitter->flow_level ++;
|
|
}
|
|
|
|
if (event->type == YAML_SEQUENCE_END_EVENT)
|
|
{
|
|
emitter->flow_level --;
|
|
emitter->indent = POP(emitter, emitter->indents);
|
|
if (emitter->canonical && !first) {
|
|
if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
if (!yaml_emitter_write_indicator(emitter, "]", 0, 0, 0))
|
|
return 0;
|
|
emitter->state = POP(emitter, emitter->states);
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (!first) {
|
|
if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
|
|
return 0;
|
|
}
|
|
|
|
if (emitter->canonical || emitter->column > emitter->best_width) {
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_SEQUENCE_ITEM_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* Expect a flow key node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_flow_mapping_key(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int first)
|
|
{
|
|
if (first)
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "{", 1, 1, 0))
|
|
return 0;
|
|
if (!yaml_emitter_increase_indent(emitter, 1, 0))
|
|
return 0;
|
|
emitter->flow_level ++;
|
|
}
|
|
|
|
if (event->type == YAML_MAPPING_END_EVENT)
|
|
{
|
|
emitter->flow_level --;
|
|
emitter->indent = POP(emitter, emitter->indents);
|
|
if (emitter->canonical && !first) {
|
|
if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
if (!yaml_emitter_write_indicator(emitter, "}", 0, 0, 0))
|
|
return 0;
|
|
emitter->state = POP(emitter, emitter->states);
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (!first) {
|
|
if (!yaml_emitter_write_indicator(emitter, ",", 0, 0, 0))
|
|
return 0;
|
|
}
|
|
if (emitter->canonical || emitter->column > emitter->best_width) {
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
|
|
if (!emitter->canonical && yaml_emitter_check_simple_key(emitter))
|
|
{
|
|
if (!PUSH(emitter, emitter->states,
|
|
YAML_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
|
|
}
|
|
else
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 0))
|
|
return 0;
|
|
if (!PUSH(emitter, emitter->states,
|
|
YAML_EMIT_FLOW_MAPPING_VALUE_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Expect a flow value node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_flow_mapping_value(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int simple)
|
|
{
|
|
if (simple) {
|
|
if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
|
|
return 0;
|
|
}
|
|
else {
|
|
if (emitter->canonical || emitter->column > emitter->best_width) {
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
}
|
|
if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 0))
|
|
return 0;
|
|
}
|
|
if (!PUSH(emitter, emitter->states, YAML_EMIT_FLOW_MAPPING_KEY_STATE))
|
|
return 0;
|
|
return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
|
|
}
|
|
|
|
/*
|
|
* Expect a block item node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_block_sequence_item(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int first)
|
|
{
|
|
if (first)
|
|
{
|
|
if (!yaml_emitter_increase_indent(emitter, 0,
|
|
(emitter->mapping_context && !emitter->indention)))
|
|
return 0;
|
|
}
|
|
|
|
if (event->type == YAML_SEQUENCE_END_EVENT)
|
|
{
|
|
emitter->indent = POP(emitter, emitter->indents);
|
|
emitter->state = POP(emitter, emitter->states);
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_write_indicator(emitter, "-", 1, 0, 1))
|
|
return 0;
|
|
if (!PUSH(emitter, emitter->states,
|
|
YAML_EMIT_BLOCK_SEQUENCE_ITEM_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 1, 0, 0);
|
|
}
|
|
|
|
/*
|
|
* Expect a block key node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_block_mapping_key(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int first)
|
|
{
|
|
if (first)
|
|
{
|
|
if (!yaml_emitter_increase_indent(emitter, 0, 0))
|
|
return 0;
|
|
}
|
|
|
|
if (event->type == YAML_MAPPING_END_EVENT)
|
|
{
|
|
emitter->indent = POP(emitter, emitter->indents);
|
|
emitter->state = POP(emitter, emitter->states);
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
|
|
if (yaml_emitter_check_simple_key(emitter))
|
|
{
|
|
if (!PUSH(emitter, emitter->states,
|
|
YAML_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 1);
|
|
}
|
|
else
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "?", 1, 0, 1))
|
|
return 0;
|
|
if (!PUSH(emitter, emitter->states,
|
|
YAML_EMIT_BLOCK_MAPPING_VALUE_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Expect a block value node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_block_mapping_value(yaml_emitter_t *emitter,
|
|
yaml_event_t *event, int simple)
|
|
{
|
|
if (simple) {
|
|
if (!yaml_emitter_write_indicator(emitter, ":", 0, 0, 0))
|
|
return 0;
|
|
}
|
|
else {
|
|
if (!yaml_emitter_write_indent(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_write_indicator(emitter, ":", 1, 0, 1))
|
|
return 0;
|
|
}
|
|
if (!PUSH(emitter, emitter->states,
|
|
YAML_EMIT_BLOCK_MAPPING_KEY_STATE))
|
|
return 0;
|
|
|
|
return yaml_emitter_emit_node(emitter, event, 0, 0, 1, 0);
|
|
}
|
|
|
|
/*
|
|
* Expect a node.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_node(yaml_emitter_t *emitter, yaml_event_t *event,
|
|
int root, int sequence, int mapping, int simple_key)
|
|
{
|
|
emitter->root_context = root;
|
|
emitter->sequence_context = sequence;
|
|
emitter->mapping_context = mapping;
|
|
emitter->simple_key_context = simple_key;
|
|
|
|
switch (event->type)
|
|
{
|
|
case YAML_ALIAS_EVENT:
|
|
return yaml_emitter_emit_alias(emitter, event);
|
|
|
|
case YAML_SCALAR_EVENT:
|
|
return yaml_emitter_emit_scalar(emitter, event);
|
|
|
|
case YAML_SEQUENCE_START_EVENT:
|
|
return yaml_emitter_emit_sequence_start(emitter, event);
|
|
|
|
case YAML_MAPPING_START_EVENT:
|
|
return yaml_emitter_emit_mapping_start(emitter, event);
|
|
|
|
default:
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Expect ALIAS.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_alias(yaml_emitter_t *emitter, SHIM(yaml_event_t *event))
|
|
{
|
|
if (!yaml_emitter_process_anchor(emitter))
|
|
return 0;
|
|
if (emitter->simple_key_context)
|
|
if (!PUT(emitter, ' ')) return 0;
|
|
emitter->state = POP(emitter, emitter->states);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Expect SCALAR.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_scalar(yaml_emitter_t *emitter, yaml_event_t *event)
|
|
{
|
|
if (!yaml_emitter_select_scalar_style(emitter, event))
|
|
return 0;
|
|
if (!yaml_emitter_process_anchor(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_process_tag(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_increase_indent(emitter, 1, 0))
|
|
return 0;
|
|
if (!yaml_emitter_process_scalar(emitter))
|
|
return 0;
|
|
emitter->indent = POP(emitter, emitter->indents);
|
|
emitter->state = POP(emitter, emitter->states);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Expect SEQUENCE-START.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_sequence_start(yaml_emitter_t *emitter, yaml_event_t *event)
|
|
{
|
|
if (!yaml_emitter_process_anchor(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_process_tag(emitter))
|
|
return 0;
|
|
|
|
if (emitter->flow_level || emitter->canonical
|
|
|| event->data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE
|
|
|| yaml_emitter_check_empty_sequence(emitter)) {
|
|
emitter->state = YAML_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE;
|
|
}
|
|
else {
|
|
emitter->state = YAML_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Expect MAPPING-START.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_emit_mapping_start(yaml_emitter_t *emitter, yaml_event_t *event)
|
|
{
|
|
if (!yaml_emitter_process_anchor(emitter))
|
|
return 0;
|
|
if (!yaml_emitter_process_tag(emitter))
|
|
return 0;
|
|
|
|
if (emitter->flow_level || emitter->canonical
|
|
|| event->data.mapping_start.style == YAML_FLOW_MAPPING_STYLE
|
|
|| yaml_emitter_check_empty_mapping(emitter)) {
|
|
emitter->state = YAML_EMIT_FLOW_MAPPING_FIRST_KEY_STATE;
|
|
}
|
|
else {
|
|
emitter->state = YAML_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Check if the document content is an empty scalar.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_check_empty_document(SHIM(yaml_emitter_t *emitter))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check if the next events represent an empty sequence.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_check_empty_sequence(yaml_emitter_t *emitter)
|
|
{
|
|
if (emitter->events.tail - emitter->events.head < 2)
|
|
return 0;
|
|
|
|
return (emitter->events.head[0].type == YAML_SEQUENCE_START_EVENT
|
|
&& emitter->events.head[1].type == YAML_SEQUENCE_END_EVENT);
|
|
}
|
|
|
|
/*
|
|
* Check if the next events represent an empty mapping.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_check_empty_mapping(yaml_emitter_t *emitter)
|
|
{
|
|
if (emitter->events.tail - emitter->events.head < 2)
|
|
return 0;
|
|
|
|
return (emitter->events.head[0].type == YAML_MAPPING_START_EVENT
|
|
&& emitter->events.head[1].type == YAML_MAPPING_END_EVENT);
|
|
}
|
|
|
|
/*
|
|
* Check if the next node can be expressed as a simple key.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_check_simple_key(yaml_emitter_t *emitter)
|
|
{
|
|
yaml_event_t *event = emitter->events.head;
|
|
size_t length = 0;
|
|
|
|
switch (event->type)
|
|
{
|
|
case YAML_ALIAS_EVENT:
|
|
length += emitter->anchor_data.anchor_length;
|
|
break;
|
|
|
|
case YAML_SCALAR_EVENT:
|
|
if (emitter->scalar_data.multiline)
|
|
return 0;
|
|
length += emitter->anchor_data.anchor_length
|
|
+ emitter->tag_data.handle_length
|
|
+ emitter->tag_data.suffix_length
|
|
+ emitter->scalar_data.length;
|
|
break;
|
|
|
|
case YAML_SEQUENCE_START_EVENT:
|
|
if (!yaml_emitter_check_empty_sequence(emitter))
|
|
return 0;
|
|
length += emitter->anchor_data.anchor_length
|
|
+ emitter->tag_data.handle_length
|
|
+ emitter->tag_data.suffix_length;
|
|
break;
|
|
|
|
case YAML_MAPPING_START_EVENT:
|
|
if (!yaml_emitter_check_empty_mapping(emitter))
|
|
return 0;
|
|
length += emitter->anchor_data.anchor_length
|
|
+ emitter->tag_data.handle_length
|
|
+ emitter->tag_data.suffix_length;
|
|
break;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (length > 128)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Determine an acceptable scalar style.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_select_scalar_style(yaml_emitter_t *emitter, yaml_event_t *event)
|
|
{
|
|
yaml_scalar_style_t style = event->data.scalar.style;
|
|
int no_tag = (!emitter->tag_data.handle && !emitter->tag_data.suffix);
|
|
|
|
if (no_tag && !event->data.scalar.plain_implicit
|
|
&& !event->data.scalar.quoted_implicit) {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"neither tag nor implicit flags are specified");
|
|
}
|
|
|
|
if (style == YAML_ANY_SCALAR_STYLE)
|
|
style = YAML_PLAIN_SCALAR_STYLE;
|
|
|
|
if (emitter->canonical)
|
|
style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
|
|
|
|
if (emitter->simple_key_context && emitter->scalar_data.multiline)
|
|
style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
|
|
|
|
if (style == YAML_PLAIN_SCALAR_STYLE)
|
|
{
|
|
if ((emitter->flow_level && !emitter->scalar_data.flow_plain_allowed)
|
|
|| (!emitter->flow_level && !emitter->scalar_data.block_plain_allowed))
|
|
style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
|
|
if (!emitter->scalar_data.length
|
|
&& (emitter->flow_level || emitter->simple_key_context))
|
|
style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
|
|
if (no_tag && !event->data.scalar.plain_implicit)
|
|
style = YAML_SINGLE_QUOTED_SCALAR_STYLE;
|
|
}
|
|
|
|
if (style == YAML_SINGLE_QUOTED_SCALAR_STYLE)
|
|
{
|
|
if (!emitter->scalar_data.single_quoted_allowed)
|
|
style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
|
|
}
|
|
|
|
if (style == YAML_LITERAL_SCALAR_STYLE || style == YAML_FOLDED_SCALAR_STYLE)
|
|
{
|
|
if (!emitter->scalar_data.block_allowed
|
|
|| emitter->flow_level || emitter->simple_key_context)
|
|
style = YAML_DOUBLE_QUOTED_SCALAR_STYLE;
|
|
}
|
|
|
|
if (no_tag && !event->data.scalar.quoted_implicit
|
|
&& style != YAML_PLAIN_SCALAR_STYLE)
|
|
{
|
|
emitter->tag_data.handle = (yaml_char_t *)"!";
|
|
emitter->tag_data.handle_length = 1;
|
|
}
|
|
|
|
emitter->scalar_data.style = style;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Write an anchor.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_process_anchor(yaml_emitter_t *emitter)
|
|
{
|
|
if (!emitter->anchor_data.anchor)
|
|
return 1;
|
|
|
|
if (!yaml_emitter_write_indicator(emitter,
|
|
(emitter->anchor_data.alias ? "*" : "&"), 1, 0, 0))
|
|
return 0;
|
|
|
|
return yaml_emitter_write_anchor(emitter,
|
|
emitter->anchor_data.anchor, emitter->anchor_data.anchor_length);
|
|
}
|
|
|
|
/*
|
|
* Write a tag.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_process_tag(yaml_emitter_t *emitter)
|
|
{
|
|
if (!emitter->tag_data.handle && !emitter->tag_data.suffix)
|
|
return 1;
|
|
|
|
if (emitter->tag_data.handle)
|
|
{
|
|
if (!yaml_emitter_write_tag_handle(emitter, emitter->tag_data.handle,
|
|
emitter->tag_data.handle_length))
|
|
return 0;
|
|
if (emitter->tag_data.suffix) {
|
|
if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
|
|
emitter->tag_data.suffix_length, 0))
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, "!<", 1, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_tag_content(emitter, emitter->tag_data.suffix,
|
|
emitter->tag_data.suffix_length, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_indicator(emitter, ">", 0, 0, 0))
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Write a scalar.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_process_scalar(yaml_emitter_t *emitter)
|
|
{
|
|
switch (emitter->scalar_data.style)
|
|
{
|
|
case YAML_PLAIN_SCALAR_STYLE:
|
|
return yaml_emitter_write_plain_scalar(emitter,
|
|
emitter->scalar_data.value, emitter->scalar_data.length,
|
|
!emitter->simple_key_context);
|
|
|
|
case YAML_SINGLE_QUOTED_SCALAR_STYLE:
|
|
return yaml_emitter_write_single_quoted_scalar(emitter,
|
|
emitter->scalar_data.value, emitter->scalar_data.length,
|
|
!emitter->simple_key_context);
|
|
|
|
case YAML_DOUBLE_QUOTED_SCALAR_STYLE:
|
|
return yaml_emitter_write_double_quoted_scalar(emitter,
|
|
emitter->scalar_data.value, emitter->scalar_data.length,
|
|
!emitter->simple_key_context);
|
|
|
|
case YAML_LITERAL_SCALAR_STYLE:
|
|
return yaml_emitter_write_literal_scalar(emitter,
|
|
emitter->scalar_data.value, emitter->scalar_data.length);
|
|
|
|
case YAML_FOLDED_SCALAR_STYLE:
|
|
return yaml_emitter_write_folded_scalar(emitter,
|
|
emitter->scalar_data.value, emitter->scalar_data.length);
|
|
|
|
default:
|
|
assert(1); /* Impossible. */
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check if a %YAML directive is valid.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_analyze_version_directive(yaml_emitter_t *emitter,
|
|
yaml_version_directive_t version_directive)
|
|
{
|
|
if (version_directive.major != 1 || (
|
|
version_directive.minor != 1
|
|
&& version_directive.minor != 2
|
|
)) {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"incompatible %YAML directive");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Check if a %TAG directive is valid.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_analyze_tag_directive(yaml_emitter_t *emitter,
|
|
yaml_tag_directive_t tag_directive)
|
|
{
|
|
yaml_string_t handle;
|
|
yaml_string_t prefix;
|
|
size_t handle_length;
|
|
size_t prefix_length;
|
|
|
|
handle_length = strlen((char *)tag_directive.handle);
|
|
prefix_length = strlen((char *)tag_directive.prefix);
|
|
STRING_ASSIGN(handle, tag_directive.handle, handle_length);
|
|
STRING_ASSIGN(prefix, tag_directive.prefix, prefix_length);
|
|
|
|
if (handle.start == handle.end) {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"tag handle must not be empty");
|
|
}
|
|
|
|
if (handle.start[0] != '!') {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"tag handle must start with '!'");
|
|
}
|
|
|
|
if (handle.end[-1] != '!') {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"tag handle must end with '!'");
|
|
}
|
|
|
|
handle.pointer ++;
|
|
|
|
while (handle.pointer < handle.end-1) {
|
|
if (!IS_ALPHA(handle)) {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"tag handle must contain alphanumerical characters only");
|
|
}
|
|
MOVE(handle);
|
|
}
|
|
|
|
if (prefix.start == prefix.end) {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"tag prefix must not be empty");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Check if an anchor is valid.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_analyze_anchor(yaml_emitter_t *emitter,
|
|
yaml_char_t *anchor, int alias)
|
|
{
|
|
size_t anchor_length;
|
|
yaml_string_t string;
|
|
|
|
anchor_length = strlen((char *)anchor);
|
|
STRING_ASSIGN(string, anchor, anchor_length);
|
|
|
|
if (string.start == string.end) {
|
|
return yaml_emitter_set_emitter_error(emitter, alias ?
|
|
"alias value must not be empty" :
|
|
"anchor value must not be empty");
|
|
}
|
|
|
|
while (string.pointer != string.end) {
|
|
if (!IS_ALPHA(string)) {
|
|
return yaml_emitter_set_emitter_error(emitter, alias ?
|
|
"alias value must contain alphanumerical characters only" :
|
|
"anchor value must contain alphanumerical characters only");
|
|
}
|
|
MOVE(string);
|
|
}
|
|
|
|
emitter->anchor_data.anchor = string.start;
|
|
emitter->anchor_data.anchor_length = string.end - string.start;
|
|
emitter->anchor_data.alias = alias;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Check if a tag is valid.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_analyze_tag(yaml_emitter_t *emitter,
|
|
yaml_char_t *tag)
|
|
{
|
|
size_t tag_length;
|
|
yaml_string_t string;
|
|
yaml_tag_directive_t *tag_directive;
|
|
|
|
tag_length = strlen((char *)tag);
|
|
STRING_ASSIGN(string, tag, tag_length);
|
|
|
|
if (string.start == string.end) {
|
|
return yaml_emitter_set_emitter_error(emitter,
|
|
"tag value must not be empty");
|
|
}
|
|
|
|
for (tag_directive = emitter->tag_directives.start;
|
|
tag_directive != emitter->tag_directives.top; tag_directive ++) {
|
|
size_t prefix_length = strlen((char *)tag_directive->prefix);
|
|
if (prefix_length < (size_t)(string.end - string.start)
|
|
&& strncmp((char *)tag_directive->prefix, (char *)string.start,
|
|
prefix_length) == 0)
|
|
{
|
|
emitter->tag_data.handle = tag_directive->handle;
|
|
emitter->tag_data.handle_length =
|
|
strlen((char *)tag_directive->handle);
|
|
emitter->tag_data.suffix = string.start + prefix_length;
|
|
emitter->tag_data.suffix_length =
|
|
(string.end - string.start) - prefix_length;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
emitter->tag_data.suffix = string.start;
|
|
emitter->tag_data.suffix_length = string.end - string.start;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Check if a scalar is valid.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_analyze_scalar(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length)
|
|
{
|
|
yaml_string_t string;
|
|
|
|
int block_indicators = 0;
|
|
int flow_indicators = 0;
|
|
int line_breaks = 0;
|
|
int special_characters = 0;
|
|
|
|
int leading_space = 0;
|
|
int leading_break = 0;
|
|
int trailing_space = 0;
|
|
int trailing_break = 0;
|
|
int break_space = 0;
|
|
int space_break = 0;
|
|
|
|
int preceded_by_whitespace = 0;
|
|
int followed_by_whitespace = 0;
|
|
int previous_space = 0;
|
|
int previous_break = 0;
|
|
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
emitter->scalar_data.value = value;
|
|
emitter->scalar_data.length = length;
|
|
|
|
if (string.start == string.end)
|
|
{
|
|
emitter->scalar_data.multiline = 0;
|
|
emitter->scalar_data.flow_plain_allowed = 0;
|
|
emitter->scalar_data.block_plain_allowed = 1;
|
|
emitter->scalar_data.single_quoted_allowed = 1;
|
|
emitter->scalar_data.block_allowed = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
if ((CHECK_AT(string, '-', 0)
|
|
&& CHECK_AT(string, '-', 1)
|
|
&& CHECK_AT(string, '-', 2))
|
|
|| (CHECK_AT(string, '.', 0)
|
|
&& CHECK_AT(string, '.', 1)
|
|
&& CHECK_AT(string, '.', 2))) {
|
|
block_indicators = 1;
|
|
flow_indicators = 1;
|
|
}
|
|
|
|
preceded_by_whitespace = 1;
|
|
followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
|
|
|
|
while (string.pointer != string.end)
|
|
{
|
|
if (string.start == string.pointer)
|
|
{
|
|
if (CHECK(string, '#') || CHECK(string, ',')
|
|
|| CHECK(string, '[') || CHECK(string, ']')
|
|
|| CHECK(string, '{') || CHECK(string, '}')
|
|
|| CHECK(string, '&') || CHECK(string, '*')
|
|
|| CHECK(string, '!') || CHECK(string, '|')
|
|
|| CHECK(string, '>') || CHECK(string, '\'')
|
|
|| CHECK(string, '"') || CHECK(string, '%')
|
|
|| CHECK(string, '@') || CHECK(string, '`')) {
|
|
flow_indicators = 1;
|
|
block_indicators = 1;
|
|
}
|
|
|
|
if (CHECK(string, '?') || CHECK(string, ':')) {
|
|
flow_indicators = 1;
|
|
if (followed_by_whitespace) {
|
|
block_indicators = 1;
|
|
}
|
|
}
|
|
|
|
if (CHECK(string, '-') && followed_by_whitespace) {
|
|
flow_indicators = 1;
|
|
block_indicators = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (CHECK(string, ',') || CHECK(string, '?')
|
|
|| CHECK(string, '[') || CHECK(string, ']')
|
|
|| CHECK(string, '{') || CHECK(string, '}')) {
|
|
flow_indicators = 1;
|
|
}
|
|
|
|
if (CHECK(string, ':')) {
|
|
flow_indicators = 1;
|
|
if (followed_by_whitespace) {
|
|
block_indicators = 1;
|
|
}
|
|
}
|
|
|
|
if (CHECK(string, '#') && preceded_by_whitespace) {
|
|
flow_indicators = 1;
|
|
block_indicators = 1;
|
|
}
|
|
}
|
|
|
|
if (!IS_PRINTABLE(string)
|
|
|| (!IS_ASCII(string) && !emitter->unicode)) {
|
|
special_characters = 1;
|
|
}
|
|
|
|
if (IS_BREAK(string)) {
|
|
line_breaks = 1;
|
|
}
|
|
|
|
if (IS_SPACE(string))
|
|
{
|
|
if (string.start == string.pointer) {
|
|
leading_space = 1;
|
|
}
|
|
if (string.pointer+WIDTH(string) == string.end) {
|
|
trailing_space = 1;
|
|
}
|
|
if (previous_break) {
|
|
break_space = 1;
|
|
}
|
|
previous_space = 1;
|
|
previous_break = 0;
|
|
}
|
|
else if (IS_BREAK(string))
|
|
{
|
|
if (string.start == string.pointer) {
|
|
leading_break = 1;
|
|
}
|
|
if (string.pointer+WIDTH(string) == string.end) {
|
|
trailing_break = 1;
|
|
}
|
|
if (previous_space) {
|
|
space_break = 1;
|
|
}
|
|
previous_space = 0;
|
|
previous_break = 1;
|
|
}
|
|
else
|
|
{
|
|
previous_space = 0;
|
|
previous_break = 0;
|
|
}
|
|
|
|
preceded_by_whitespace = IS_BLANKZ(string);
|
|
MOVE(string);
|
|
if (string.pointer != string.end) {
|
|
followed_by_whitespace = IS_BLANKZ_AT(string, WIDTH(string));
|
|
}
|
|
}
|
|
|
|
emitter->scalar_data.multiline = line_breaks;
|
|
|
|
emitter->scalar_data.flow_plain_allowed = 1;
|
|
emitter->scalar_data.block_plain_allowed = 1;
|
|
emitter->scalar_data.single_quoted_allowed = 1;
|
|
emitter->scalar_data.block_allowed = 1;
|
|
|
|
if (leading_space || leading_break || trailing_space || trailing_break) {
|
|
emitter->scalar_data.flow_plain_allowed = 0;
|
|
emitter->scalar_data.block_plain_allowed = 0;
|
|
}
|
|
|
|
if (trailing_space) {
|
|
emitter->scalar_data.block_allowed = 0;
|
|
}
|
|
|
|
if (break_space) {
|
|
emitter->scalar_data.flow_plain_allowed = 0;
|
|
emitter->scalar_data.block_plain_allowed = 0;
|
|
emitter->scalar_data.single_quoted_allowed = 0;
|
|
}
|
|
|
|
if (space_break || special_characters) {
|
|
emitter->scalar_data.flow_plain_allowed = 0;
|
|
emitter->scalar_data.block_plain_allowed = 0;
|
|
emitter->scalar_data.single_quoted_allowed = 0;
|
|
emitter->scalar_data.block_allowed = 0;
|
|
}
|
|
|
|
if (line_breaks) {
|
|
emitter->scalar_data.flow_plain_allowed = 0;
|
|
emitter->scalar_data.block_plain_allowed = 0;
|
|
}
|
|
|
|
if (flow_indicators) {
|
|
emitter->scalar_data.flow_plain_allowed = 0;
|
|
}
|
|
|
|
if (block_indicators) {
|
|
emitter->scalar_data.block_plain_allowed = 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Check if the event data is valid.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_analyze_event(yaml_emitter_t *emitter,
|
|
yaml_event_t *event)
|
|
{
|
|
emitter->anchor_data.anchor = NULL;
|
|
emitter->anchor_data.anchor_length = 0;
|
|
emitter->tag_data.handle = NULL;
|
|
emitter->tag_data.handle_length = 0;
|
|
emitter->tag_data.suffix = NULL;
|
|
emitter->tag_data.suffix_length = 0;
|
|
emitter->scalar_data.value = NULL;
|
|
emitter->scalar_data.length = 0;
|
|
|
|
switch (event->type)
|
|
{
|
|
case YAML_ALIAS_EVENT:
|
|
if (!yaml_emitter_analyze_anchor(emitter,
|
|
event->data.alias.anchor, 1))
|
|
return 0;
|
|
return 1;
|
|
|
|
case YAML_SCALAR_EVENT:
|
|
if (event->data.scalar.anchor) {
|
|
if (!yaml_emitter_analyze_anchor(emitter,
|
|
event->data.scalar.anchor, 0))
|
|
return 0;
|
|
}
|
|
if (event->data.scalar.tag && (emitter->canonical ||
|
|
(!event->data.scalar.plain_implicit
|
|
&& !event->data.scalar.quoted_implicit))) {
|
|
if (!yaml_emitter_analyze_tag(emitter, event->data.scalar.tag))
|
|
return 0;
|
|
}
|
|
if (!yaml_emitter_analyze_scalar(emitter,
|
|
event->data.scalar.value, event->data.scalar.length))
|
|
return 0;
|
|
return 1;
|
|
|
|
case YAML_SEQUENCE_START_EVENT:
|
|
if (event->data.sequence_start.anchor) {
|
|
if (!yaml_emitter_analyze_anchor(emitter,
|
|
event->data.sequence_start.anchor, 0))
|
|
return 0;
|
|
}
|
|
if (event->data.sequence_start.tag && (emitter->canonical ||
|
|
!event->data.sequence_start.implicit)) {
|
|
if (!yaml_emitter_analyze_tag(emitter,
|
|
event->data.sequence_start.tag))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
|
|
case YAML_MAPPING_START_EVENT:
|
|
if (event->data.mapping_start.anchor) {
|
|
if (!yaml_emitter_analyze_anchor(emitter,
|
|
event->data.mapping_start.anchor, 0))
|
|
return 0;
|
|
}
|
|
if (event->data.mapping_start.tag && (emitter->canonical ||
|
|
!event->data.mapping_start.implicit)) {
|
|
if (!yaml_emitter_analyze_tag(emitter,
|
|
event->data.mapping_start.tag))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Write the BOM character.
|
|
*/
|
|
|
|
static int
|
|
yaml_emitter_write_bom(yaml_emitter_t *emitter)
|
|
{
|
|
if (!FLUSH(emitter)) return 0;
|
|
|
|
*(emitter->buffer.pointer++) = (yaml_char_t) '\xEF';
|
|
*(emitter->buffer.pointer++) = (yaml_char_t) '\xBB';
|
|
*(emitter->buffer.pointer++) = (yaml_char_t) '\xBF';
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_indent(yaml_emitter_t *emitter)
|
|
{
|
|
int indent = (emitter->indent >= 0) ? emitter->indent : 0;
|
|
|
|
if (!emitter->indention || emitter->column > indent
|
|
|| (emitter->column == indent && !emitter->whitespace)) {
|
|
if (!PUT_BREAK(emitter)) return 0;
|
|
}
|
|
|
|
while (emitter->column < indent) {
|
|
if (!PUT(emitter, ' ')) return 0;
|
|
}
|
|
|
|
emitter->whitespace = 1;
|
|
emitter->indention = 1;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_indicator(yaml_emitter_t *emitter,
|
|
const char *indicator, int need_whitespace,
|
|
int is_whitespace, int is_indention)
|
|
{
|
|
size_t indicator_length;
|
|
yaml_string_t string;
|
|
|
|
indicator_length = strlen(indicator);
|
|
STRING_ASSIGN(string, (yaml_char_t *)indicator, indicator_length);
|
|
|
|
if (need_whitespace && !emitter->whitespace) {
|
|
if (!PUT(emitter, ' ')) return 0;
|
|
}
|
|
|
|
while (string.pointer != string.end) {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
|
|
emitter->whitespace = is_whitespace;
|
|
emitter->indention = (emitter->indention && is_indention);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_anchor(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length)
|
|
{
|
|
yaml_string_t string;
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
while (string.pointer != string.end) {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
|
|
emitter->whitespace = 0;
|
|
emitter->indention = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_tag_handle(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length)
|
|
{
|
|
yaml_string_t string;
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
if (!emitter->whitespace) {
|
|
if (!PUT(emitter, ' ')) return 0;
|
|
}
|
|
|
|
while (string.pointer != string.end) {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
|
|
emitter->whitespace = 0;
|
|
emitter->indention = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_tag_content(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length,
|
|
int need_whitespace)
|
|
{
|
|
yaml_string_t string;
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
if (need_whitespace && !emitter->whitespace) {
|
|
if (!PUT(emitter, ' ')) return 0;
|
|
}
|
|
|
|
while (string.pointer != string.end) {
|
|
if (IS_ALPHA(string)
|
|
|| CHECK(string, ';') || CHECK(string, '/')
|
|
|| CHECK(string, '?') || CHECK(string, ':')
|
|
|| CHECK(string, '@') || CHECK(string, '&')
|
|
|| CHECK(string, '=') || CHECK(string, '+')
|
|
|| CHECK(string, '$') || CHECK(string, ',')
|
|
|| CHECK(string, '_') || CHECK(string, '.')
|
|
|| CHECK(string, '~') || CHECK(string, '*')
|
|
|| CHECK(string, '\'') || CHECK(string, '(')
|
|
|| CHECK(string, ')') || CHECK(string, '[')
|
|
|| CHECK(string, ']')) {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
else {
|
|
int width = WIDTH(string);
|
|
unsigned int value;
|
|
while (width --) {
|
|
value = *(string.pointer++);
|
|
if (!PUT(emitter, '%')) return 0;
|
|
if (!PUT(emitter, (value >> 4)
|
|
+ ((value >> 4) < 10 ? '0' : 'A' - 10)))
|
|
return 0;
|
|
if (!PUT(emitter, (value & 0x0F)
|
|
+ ((value & 0x0F) < 10 ? '0' : 'A' - 10)))
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
emitter->whitespace = 0;
|
|
emitter->indention = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_plain_scalar(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length, int allow_breaks)
|
|
{
|
|
yaml_string_t string;
|
|
int spaces = 0;
|
|
int breaks = 0;
|
|
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
/**
|
|
* Avoid trailing spaces for empty values in block mode.
|
|
* In flow mode, we still want the space to prevent ambiguous things
|
|
* like {a:}.
|
|
* Currently, the emitter forbids any plain empty scalar in flow mode
|
|
* (e.g. it outputs {a: ''} instead), so emitter->flow_level will
|
|
* never be true here.
|
|
* But if the emitter is ever changed to allow emitting empty values,
|
|
* the check for flow_level is already here.
|
|
*/
|
|
if (!emitter->whitespace && (length || emitter->flow_level)) {
|
|
if (!PUT(emitter, ' ')) return 0;
|
|
}
|
|
|
|
while (string.pointer != string.end)
|
|
{
|
|
if (IS_SPACE(string))
|
|
{
|
|
if (allow_breaks && !spaces
|
|
&& emitter->column > emitter->best_width
|
|
&& !IS_SPACE_AT(string, 1)) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
MOVE(string);
|
|
}
|
|
else {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
spaces = 1;
|
|
}
|
|
else if (IS_BREAK(string))
|
|
{
|
|
if (!breaks && CHECK(string, '\n')) {
|
|
if (!PUT_BREAK(emitter)) return 0;
|
|
}
|
|
if (!WRITE_BREAK(emitter, string)) return 0;
|
|
emitter->indention = 1;
|
|
breaks = 1;
|
|
}
|
|
else
|
|
{
|
|
if (breaks) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
}
|
|
if (!WRITE(emitter, string)) return 0;
|
|
emitter->indention = 0;
|
|
spaces = 0;
|
|
breaks = 0;
|
|
}
|
|
}
|
|
|
|
emitter->whitespace = 0;
|
|
emitter->indention = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_single_quoted_scalar(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length, int allow_breaks)
|
|
{
|
|
yaml_string_t string;
|
|
int spaces = 0;
|
|
int breaks = 0;
|
|
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
if (!yaml_emitter_write_indicator(emitter, "'", 1, 0, 0))
|
|
return 0;
|
|
|
|
while (string.pointer != string.end)
|
|
{
|
|
if (IS_SPACE(string))
|
|
{
|
|
if (allow_breaks && !spaces
|
|
&& emitter->column > emitter->best_width
|
|
&& string.pointer != string.start
|
|
&& string.pointer != string.end - 1
|
|
&& !IS_SPACE_AT(string, 1)) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
MOVE(string);
|
|
}
|
|
else {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
spaces = 1;
|
|
}
|
|
else if (IS_BREAK(string))
|
|
{
|
|
if (!breaks && CHECK(string, '\n')) {
|
|
if (!PUT_BREAK(emitter)) return 0;
|
|
}
|
|
if (!WRITE_BREAK(emitter, string)) return 0;
|
|
emitter->indention = 1;
|
|
breaks = 1;
|
|
}
|
|
else
|
|
{
|
|
if (breaks) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
}
|
|
if (CHECK(string, '\'')) {
|
|
if (!PUT(emitter, '\'')) return 0;
|
|
}
|
|
if (!WRITE(emitter, string)) return 0;
|
|
emitter->indention = 0;
|
|
spaces = 0;
|
|
breaks = 0;
|
|
}
|
|
}
|
|
|
|
if (breaks)
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
|
|
if (!yaml_emitter_write_indicator(emitter, "'", 0, 0, 0))
|
|
return 0;
|
|
|
|
emitter->whitespace = 0;
|
|
emitter->indention = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_double_quoted_scalar(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length, int allow_breaks)
|
|
{
|
|
yaml_string_t string;
|
|
int spaces = 0;
|
|
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
if (!yaml_emitter_write_indicator(emitter, "\"", 1, 0, 0))
|
|
return 0;
|
|
|
|
while (string.pointer != string.end)
|
|
{
|
|
if (!IS_PRINTABLE(string) || (!emitter->unicode && !IS_ASCII(string))
|
|
|| IS_BOM(string) || IS_BREAK(string)
|
|
|| CHECK(string, '"') || CHECK(string, '\\'))
|
|
{
|
|
unsigned char octet;
|
|
unsigned int width;
|
|
unsigned int value;
|
|
int k;
|
|
|
|
octet = string.pointer[0];
|
|
width = (octet & 0x80) == 0x00 ? 1 :
|
|
(octet & 0xE0) == 0xC0 ? 2 :
|
|
(octet & 0xF0) == 0xE0 ? 3 :
|
|
(octet & 0xF8) == 0xF0 ? 4 : 0;
|
|
value = (octet & 0x80) == 0x00 ? octet & 0x7F :
|
|
(octet & 0xE0) == 0xC0 ? octet & 0x1F :
|
|
(octet & 0xF0) == 0xE0 ? octet & 0x0F :
|
|
(octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
|
|
for (k = 1; k < (int)width; k ++) {
|
|
octet = string.pointer[k];
|
|
value = (value << 6) + (octet & 0x3F);
|
|
}
|
|
string.pointer += width;
|
|
|
|
if (!PUT(emitter, '\\')) return 0;
|
|
|
|
switch (value)
|
|
{
|
|
case 0x00:
|
|
if (!PUT(emitter, '0')) return 0;
|
|
break;
|
|
|
|
case 0x07:
|
|
if (!PUT(emitter, 'a')) return 0;
|
|
break;
|
|
|
|
case 0x08:
|
|
if (!PUT(emitter, 'b')) return 0;
|
|
break;
|
|
|
|
case 0x09:
|
|
if (!PUT(emitter, 't')) return 0;
|
|
break;
|
|
|
|
case 0x0A:
|
|
if (!PUT(emitter, 'n')) return 0;
|
|
break;
|
|
|
|
case 0x0B:
|
|
if (!PUT(emitter, 'v')) return 0;
|
|
break;
|
|
|
|
case 0x0C:
|
|
if (!PUT(emitter, 'f')) return 0;
|
|
break;
|
|
|
|
case 0x0D:
|
|
if (!PUT(emitter, 'r')) return 0;
|
|
break;
|
|
|
|
case 0x1B:
|
|
if (!PUT(emitter, 'e')) return 0;
|
|
break;
|
|
|
|
case 0x22:
|
|
if (!PUT(emitter, '\"')) return 0;
|
|
break;
|
|
|
|
case 0x5C:
|
|
if (!PUT(emitter, '\\')) return 0;
|
|
break;
|
|
|
|
case 0x85:
|
|
if (!PUT(emitter, 'N')) return 0;
|
|
break;
|
|
|
|
case 0xA0:
|
|
if (!PUT(emitter, '_')) return 0;
|
|
break;
|
|
|
|
case 0x2028:
|
|
if (!PUT(emitter, 'L')) return 0;
|
|
break;
|
|
|
|
case 0x2029:
|
|
if (!PUT(emitter, 'P')) return 0;
|
|
break;
|
|
|
|
default:
|
|
if (value <= 0xFF) {
|
|
if (!PUT(emitter, 'x')) return 0;
|
|
width = 2;
|
|
}
|
|
else if (value <= 0xFFFF) {
|
|
if (!PUT(emitter, 'u')) return 0;
|
|
width = 4;
|
|
}
|
|
else {
|
|
if (!PUT(emitter, 'U')) return 0;
|
|
width = 8;
|
|
}
|
|
for (k = (width-1)*4; k >= 0; k -= 4) {
|
|
int digit = (value >> k) & 0x0F;
|
|
if (!PUT(emitter, digit + (digit < 10 ? '0' : 'A'-10)))
|
|
return 0;
|
|
}
|
|
}
|
|
spaces = 0;
|
|
}
|
|
else if (IS_SPACE(string))
|
|
{
|
|
if (allow_breaks && !spaces
|
|
&& emitter->column > emitter->best_width
|
|
&& string.pointer != string.start
|
|
&& string.pointer != string.end - 1) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
if (IS_SPACE_AT(string, 1)) {
|
|
if (!PUT(emitter, '\\')) return 0;
|
|
}
|
|
MOVE(string);
|
|
}
|
|
else {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
spaces = 1;
|
|
}
|
|
else
|
|
{
|
|
if (!WRITE(emitter, string)) return 0;
|
|
spaces = 0;
|
|
}
|
|
}
|
|
|
|
if (!yaml_emitter_write_indicator(emitter, "\"", 0, 0, 0))
|
|
return 0;
|
|
|
|
emitter->whitespace = 0;
|
|
emitter->indention = 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_block_scalar_hints(yaml_emitter_t *emitter,
|
|
yaml_string_t string)
|
|
{
|
|
char indent_hint[2];
|
|
const char *chomp_hint = NULL;
|
|
|
|
if (IS_SPACE(string) || IS_BREAK(string))
|
|
{
|
|
indent_hint[0] = '0' + (char)emitter->best_indent;
|
|
indent_hint[1] = '\0';
|
|
if (!yaml_emitter_write_indicator(emitter, indent_hint, 0, 0, 0))
|
|
return 0;
|
|
}
|
|
|
|
emitter->open_ended = 0;
|
|
|
|
string.pointer = string.end;
|
|
if (string.start == string.pointer)
|
|
{
|
|
chomp_hint = "-";
|
|
}
|
|
else
|
|
{
|
|
do {
|
|
string.pointer --;
|
|
} while ((*string.pointer & 0xC0) == 0x80);
|
|
if (!IS_BREAK(string))
|
|
{
|
|
chomp_hint = "-";
|
|
}
|
|
else if (string.start == string.pointer)
|
|
{
|
|
chomp_hint = "+";
|
|
emitter->open_ended = 2;
|
|
}
|
|
else
|
|
{
|
|
do {
|
|
string.pointer --;
|
|
} while ((*string.pointer & 0xC0) == 0x80);
|
|
if (IS_BREAK(string))
|
|
{
|
|
chomp_hint = "+";
|
|
emitter->open_ended = 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (chomp_hint)
|
|
{
|
|
if (!yaml_emitter_write_indicator(emitter, chomp_hint, 0, 0, 0))
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_literal_scalar(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length)
|
|
{
|
|
yaml_string_t string;
|
|
int breaks = 1;
|
|
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
if (!yaml_emitter_write_indicator(emitter, "|", 1, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_block_scalar_hints(emitter, string))
|
|
return 0;
|
|
if (!PUT_BREAK(emitter)) return 0;
|
|
emitter->indention = 1;
|
|
emitter->whitespace = 1;
|
|
|
|
while (string.pointer != string.end)
|
|
{
|
|
if (IS_BREAK(string))
|
|
{
|
|
if (!WRITE_BREAK(emitter, string)) return 0;
|
|
emitter->indention = 1;
|
|
breaks = 1;
|
|
}
|
|
else
|
|
{
|
|
if (breaks) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
}
|
|
if (!WRITE(emitter, string)) return 0;
|
|
emitter->indention = 0;
|
|
breaks = 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
yaml_emitter_write_folded_scalar(yaml_emitter_t *emitter,
|
|
yaml_char_t *value, size_t length)
|
|
{
|
|
yaml_string_t string;
|
|
int breaks = 1;
|
|
int leading_spaces = 1;
|
|
|
|
STRING_ASSIGN(string, value, length);
|
|
|
|
if (!yaml_emitter_write_indicator(emitter, ">", 1, 0, 0))
|
|
return 0;
|
|
if (!yaml_emitter_write_block_scalar_hints(emitter, string))
|
|
return 0;
|
|
if (!PUT_BREAK(emitter)) return 0;
|
|
emitter->indention = 1;
|
|
emitter->whitespace = 1;
|
|
|
|
while (string.pointer != string.end)
|
|
{
|
|
if (IS_BREAK(string))
|
|
{
|
|
if (!breaks && !leading_spaces && CHECK(string, '\n')) {
|
|
int k = 0;
|
|
while (IS_BREAK_AT(string, k)) {
|
|
k += WIDTH_AT(string, k);
|
|
}
|
|
if (!IS_BLANKZ_AT(string, k)) {
|
|
if (!PUT_BREAK(emitter)) return 0;
|
|
}
|
|
}
|
|
if (!WRITE_BREAK(emitter, string)) return 0;
|
|
emitter->indention = 1;
|
|
breaks = 1;
|
|
}
|
|
else
|
|
{
|
|
if (breaks) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
leading_spaces = IS_BLANK(string);
|
|
}
|
|
if (!breaks && IS_SPACE(string) && !IS_SPACE_AT(string, 1)
|
|
&& emitter->column > emitter->best_width) {
|
|
if (!yaml_emitter_write_indent(emitter)) return 0;
|
|
MOVE(string);
|
|
}
|
|
else {
|
|
if (!WRITE(emitter, string)) return 0;
|
|
}
|
|
emitter->indention = 0;
|
|
breaks = 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|