mirror of
https://github.com/ossrs/srs.git
synced 2025-02-15 04:42:04 +00:00
73dd8af4c9
For the DJI M30, there is a bug where empty NALU packets with a size of zero are causing issues with HLS streaming. This bug leads to random unpublish events due to the SRS disconnecting the connection for the HLS module when it fails to handle empty NALU packets. To address this bug, we have patched the system to ignore any empty NALU packets with a size of zero. Additionally, we have created a tool in the srs-bench to replay pcapng files captured by tcpdump or Wireshark. We have also added utest using mprotect and asan to detect any memory corruption. It is important to note that this bug has been fixed in versions 4.0.2716477f31004and 5.0.170939f6b484b. This patch specifically addresses the issue in SRS 6.0. Please be aware that there is another commit related to this bug that partially fixes the issue but still leaves a small problem for asan to detect memory corruption. This commit,577cd299e1, only ignores empty NALU packets but still reads beyond the memory. --------- Co-authored-by: chundonglinlin <chundonglinlin@163.com>
2020 lines
54 KiB
Go
2020 lines
54 KiB
Go
//
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// Copyright (c) 2011-2019 Canonical Ltd
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// Copyright (c) 2006-2010 Kirill Simonov
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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// of the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package yaml
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import (
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"bytes"
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"fmt"
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)
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// Flush the buffer if needed.
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func flush(emitter *yaml_emitter_t) bool {
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if emitter.buffer_pos+5 >= len(emitter.buffer) {
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return yaml_emitter_flush(emitter)
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}
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return true
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}
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// Put a character to the output buffer.
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func put(emitter *yaml_emitter_t, value byte) bool {
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if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
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return false
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}
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emitter.buffer[emitter.buffer_pos] = value
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emitter.buffer_pos++
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emitter.column++
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return true
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}
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// Put a line break to the output buffer.
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func put_break(emitter *yaml_emitter_t) bool {
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if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
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return false
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}
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switch emitter.line_break {
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case yaml_CR_BREAK:
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emitter.buffer[emitter.buffer_pos] = '\r'
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emitter.buffer_pos += 1
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case yaml_LN_BREAK:
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emitter.buffer[emitter.buffer_pos] = '\n'
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emitter.buffer_pos += 1
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case yaml_CRLN_BREAK:
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emitter.buffer[emitter.buffer_pos+0] = '\r'
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emitter.buffer[emitter.buffer_pos+1] = '\n'
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emitter.buffer_pos += 2
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default:
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panic("unknown line break setting")
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}
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if emitter.column == 0 {
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emitter.space_above = true
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}
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emitter.column = 0
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emitter.line++
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// [Go] Do this here and below and drop from everywhere else (see commented lines).
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emitter.indention = true
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return true
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}
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// Copy a character from a string into buffer.
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func write(emitter *yaml_emitter_t, s []byte, i *int) bool {
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if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) {
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return false
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}
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p := emitter.buffer_pos
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w := width(s[*i])
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switch w {
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case 4:
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emitter.buffer[p+3] = s[*i+3]
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fallthrough
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case 3:
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emitter.buffer[p+2] = s[*i+2]
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fallthrough
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case 2:
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emitter.buffer[p+1] = s[*i+1]
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fallthrough
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case 1:
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emitter.buffer[p+0] = s[*i+0]
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default:
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panic("unknown character width")
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}
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emitter.column++
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emitter.buffer_pos += w
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*i += w
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return true
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}
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// Write a whole string into buffer.
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func write_all(emitter *yaml_emitter_t, s []byte) bool {
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for i := 0; i < len(s); {
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if !write(emitter, s, &i) {
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return false
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}
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}
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return true
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}
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// Copy a line break character from a string into buffer.
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func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool {
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if s[*i] == '\n' {
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if !put_break(emitter) {
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return false
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}
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*i++
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} else {
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if !write(emitter, s, i) {
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return false
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}
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if emitter.column == 0 {
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emitter.space_above = true
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}
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emitter.column = 0
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emitter.line++
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// [Go] Do this here and above and drop from everywhere else (see commented lines).
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emitter.indention = true
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}
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return true
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}
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// Set an emitter error and return false.
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func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool {
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emitter.error = yaml_EMITTER_ERROR
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emitter.problem = problem
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return false
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}
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// Emit an event.
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func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool {
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emitter.events = append(emitter.events, *event)
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for !yaml_emitter_need_more_events(emitter) {
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event := &emitter.events[emitter.events_head]
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if !yaml_emitter_analyze_event(emitter, event) {
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return false
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}
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if !yaml_emitter_state_machine(emitter, event) {
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return false
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}
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yaml_event_delete(event)
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emitter.events_head++
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}
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return true
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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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func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool {
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if emitter.events_head == len(emitter.events) {
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return true
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}
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var accumulate int
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switch emitter.events[emitter.events_head].typ {
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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 false
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}
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if len(emitter.events)-emitter.events_head > accumulate {
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return false
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}
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var level int
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for i := emitter.events_head; i < len(emitter.events); i++ {
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switch emitter.events[i].typ {
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case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT:
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level++
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case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT:
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level--
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}
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if level == 0 {
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return false
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}
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}
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return true
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}
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// Append a directive to the directives stack.
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func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool {
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for i := 0; i < len(emitter.tag_directives); i++ {
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if bytes.Equal(value.handle, emitter.tag_directives[i].handle) {
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if allow_duplicates {
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return true
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}
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return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive")
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}
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}
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// [Go] Do we actually need to copy this given garbage collection
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// and the lack of deallocating destructors?
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tag_copy := yaml_tag_directive_t{
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handle: make([]byte, len(value.handle)),
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prefix: make([]byte, len(value.prefix)),
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}
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copy(tag_copy.handle, value.handle)
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copy(tag_copy.prefix, value.prefix)
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emitter.tag_directives = append(emitter.tag_directives, tag_copy)
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return true
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}
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// Increase the indentation level.
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func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool {
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emitter.indents = append(emitter.indents, emitter.indent)
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if emitter.indent < 0 {
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if flow {
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emitter.indent = emitter.best_indent
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} else {
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emitter.indent = 0
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}
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} else if !indentless {
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// [Go] This was changed so that indentations are more regular.
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if emitter.states[len(emitter.states)-1] == yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE {
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// The first indent inside a sequence will just skip the "- " indicator.
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emitter.indent += 2
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} else {
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// Everything else aligns to the chosen indentation.
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emitter.indent = emitter.best_indent*((emitter.indent+emitter.best_indent)/emitter.best_indent)
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}
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}
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return true
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}
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// State dispatcher.
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func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool {
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switch emitter.state {
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default:
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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, true)
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case yaml_EMIT_DOCUMENT_START_STATE:
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return yaml_emitter_emit_document_start(emitter, event, false)
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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, true, false)
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case yaml_EMIT_FLOW_SEQUENCE_TRAIL_ITEM_STATE:
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return yaml_emitter_emit_flow_sequence_item(emitter, event, false, true)
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case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE:
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return yaml_emitter_emit_flow_sequence_item(emitter, event, false, false)
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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, true, false)
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case yaml_EMIT_FLOW_MAPPING_TRAIL_KEY_STATE:
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return yaml_emitter_emit_flow_mapping_key(emitter, event, false, true)
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case yaml_EMIT_FLOW_MAPPING_KEY_STATE:
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return yaml_emitter_emit_flow_mapping_key(emitter, event, false, false)
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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, true)
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case yaml_EMIT_FLOW_MAPPING_VALUE_STATE:
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return yaml_emitter_emit_flow_mapping_value(emitter, event, false)
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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, true)
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case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE:
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return yaml_emitter_emit_block_sequence_item(emitter, event, false)
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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, true)
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case yaml_EMIT_BLOCK_MAPPING_KEY_STATE:
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return yaml_emitter_emit_block_mapping_key(emitter, event, false)
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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, true)
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case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE:
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return yaml_emitter_emit_block_mapping_value(emitter, event, false)
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case yaml_EMIT_END_STATE:
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return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END")
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}
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panic("invalid emitter state")
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}
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// Expect STREAM-START.
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func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
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if event.typ != yaml_STREAM_START_EVENT {
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return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START")
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}
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if emitter.encoding == yaml_ANY_ENCODING {
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emitter.encoding = event.encoding
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if emitter.encoding == yaml_ANY_ENCODING {
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emitter.encoding = yaml_UTF8_ENCODING
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}
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}
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if emitter.best_indent < 2 || emitter.best_indent > 9 {
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emitter.best_indent = 2
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}
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if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 {
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emitter.best_width = 80
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}
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if emitter.best_width < 0 {
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emitter.best_width = 1<<31 - 1
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}
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if emitter.line_break == yaml_ANY_BREAK {
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emitter.line_break = yaml_LN_BREAK
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}
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emitter.indent = -1
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emitter.line = 0
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emitter.column = 0
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emitter.whitespace = true
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emitter.indention = true
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emitter.space_above = true
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emitter.foot_indent = -1
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if emitter.encoding != yaml_UTF8_ENCODING {
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if !yaml_emitter_write_bom(emitter) {
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return false
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}
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}
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emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE
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return true
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}
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// Expect DOCUMENT-START or STREAM-END.
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func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
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if event.typ == yaml_DOCUMENT_START_EVENT {
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if event.version_directive != nil {
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if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) {
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return false
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}
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}
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for i := 0; i < len(event.tag_directives); i++ {
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tag_directive := &event.tag_directives[i]
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if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) {
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return false
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}
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if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) {
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return false
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}
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}
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for i := 0; i < len(default_tag_directives); i++ {
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tag_directive := &default_tag_directives[i]
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if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) {
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return false
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}
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}
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implicit := event.implicit
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if !first || emitter.canonical {
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implicit = false
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}
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if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) {
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if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
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return false
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}
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if !yaml_emitter_write_indent(emitter) {
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return false
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}
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}
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if event.version_directive != nil {
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implicit = false
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if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) {
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return false
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}
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if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) {
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return false
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}
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if !yaml_emitter_write_indent(emitter) {
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return false
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}
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}
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if len(event.tag_directives) > 0 {
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implicit = false
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for i := 0; i < len(event.tag_directives); i++ {
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tag_directive := &event.tag_directives[i]
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if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) {
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return false
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}
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if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) {
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return false
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}
|
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if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) {
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return false
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}
|
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if !yaml_emitter_write_indent(emitter) {
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return false
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}
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}
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}
|
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|
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if yaml_emitter_check_empty_document(emitter) {
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implicit = false
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}
|
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if !implicit {
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if !yaml_emitter_write_indent(emitter) {
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return false
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}
|
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if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) {
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return false
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}
|
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if emitter.canonical || true {
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if !yaml_emitter_write_indent(emitter) {
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return false
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}
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}
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}
|
|
|
|
if len(emitter.head_comment) > 0 {
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if !yaml_emitter_process_head_comment(emitter) {
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return false
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|
}
|
|
if !put_break(emitter) {
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return false
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}
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}
|
|
|
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emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE
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return true
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}
|
|
|
|
if event.typ == yaml_STREAM_END_EVENT {
|
|
if emitter.open_ended {
|
|
if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
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return false
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}
|
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if !yaml_emitter_write_indent(emitter) {
|
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return false
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}
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}
|
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if !yaml_emitter_flush(emitter) {
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return false
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|
}
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|
emitter.state = yaml_EMIT_END_STATE
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return true
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}
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|
|
|
return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END")
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}
|
|
|
|
// Expect the root node.
|
|
func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool {
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emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE)
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|
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if !yaml_emitter_process_head_comment(emitter) {
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return false
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|
}
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|
if !yaml_emitter_emit_node(emitter, event, true, false, false, false) {
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return false
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}
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if !yaml_emitter_process_line_comment(emitter) {
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return false
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}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
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return false
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}
|
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return true
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}
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|
|
// Expect DOCUMENT-END.
|
|
func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
if event.typ != yaml_DOCUMENT_END_EVENT {
|
|
return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END")
|
|
}
|
|
// [Go] Force document foot separation.
|
|
emitter.foot_indent = 0
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
emitter.foot_indent = -1
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !event.implicit {
|
|
// [Go] Allocate the slice elsewhere.
|
|
if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_flush(emitter) {
|
|
return false
|
|
}
|
|
emitter.state = yaml_EMIT_DOCUMENT_START_STATE
|
|
emitter.tag_directives = emitter.tag_directives[:0]
|
|
return true
|
|
}
|
|
|
|
// Expect a flow item node.
|
|
func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first, trail bool) bool {
|
|
if first {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_increase_indent(emitter, true, false) {
|
|
return false
|
|
}
|
|
emitter.flow_level++
|
|
}
|
|
|
|
if event.typ == yaml_SEQUENCE_END_EVENT {
|
|
if emitter.canonical && !first && !trail {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
emitter.flow_level--
|
|
emitter.indent = emitter.indents[len(emitter.indents)-1]
|
|
emitter.indents = emitter.indents[:len(emitter.indents)-1]
|
|
if emitter.column == 0 || emitter.canonical && !first {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
emitter.state = emitter.states[len(emitter.states)-1]
|
|
emitter.states = emitter.states[:len(emitter.states)-1]
|
|
|
|
return true
|
|
}
|
|
|
|
if !first && !trail {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if !yaml_emitter_process_head_comment(emitter) {
|
|
return false
|
|
}
|
|
if emitter.column == 0 {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if emitter.canonical || emitter.column > emitter.best_width {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 {
|
|
emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_TRAIL_ITEM_STATE)
|
|
} else {
|
|
emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE)
|
|
}
|
|
if !yaml_emitter_emit_node(emitter, event, false, true, false, false) {
|
|
return false
|
|
}
|
|
if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Expect a flow key node.
|
|
func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first, trail bool) bool {
|
|
if first {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_increase_indent(emitter, true, false) {
|
|
return false
|
|
}
|
|
emitter.flow_level++
|
|
}
|
|
|
|
if event.typ == yaml_MAPPING_END_EVENT {
|
|
if (emitter.canonical || len(emitter.head_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0) && !first && !trail {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_process_head_comment(emitter) {
|
|
return false
|
|
}
|
|
emitter.flow_level--
|
|
emitter.indent = emitter.indents[len(emitter.indents)-1]
|
|
emitter.indents = emitter.indents[:len(emitter.indents)-1]
|
|
if emitter.canonical && !first {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
emitter.state = emitter.states[len(emitter.states)-1]
|
|
emitter.states = emitter.states[:len(emitter.states)-1]
|
|
return true
|
|
}
|
|
|
|
if !first && !trail {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if !yaml_emitter_process_head_comment(emitter) {
|
|
return false
|
|
}
|
|
|
|
if emitter.column == 0 {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if emitter.canonical || emitter.column > emitter.best_width {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
if !emitter.canonical && yaml_emitter_check_simple_key(emitter) {
|
|
emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE)
|
|
return yaml_emitter_emit_node(emitter, event, false, false, true, true)
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) {
|
|
return false
|
|
}
|
|
emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE)
|
|
return yaml_emitter_emit_node(emitter, event, false, false, true, false)
|
|
}
|
|
|
|
// Expect a flow value node.
|
|
func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
|
|
if simple {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
|
|
return false
|
|
}
|
|
} else {
|
|
if emitter.canonical || emitter.column > emitter.best_width {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 {
|
|
emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_TRAIL_KEY_STATE)
|
|
} else {
|
|
emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE)
|
|
}
|
|
if !yaml_emitter_emit_node(emitter, event, false, false, true, false) {
|
|
return false
|
|
}
|
|
if len(emitter.line_comment)+len(emitter.foot_comment)+len(emitter.tail_comment) > 0 {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Expect a block item node.
|
|
func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
|
|
if first {
|
|
if !yaml_emitter_increase_indent(emitter, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
if event.typ == yaml_SEQUENCE_END_EVENT {
|
|
emitter.indent = emitter.indents[len(emitter.indents)-1]
|
|
emitter.indents = emitter.indents[:len(emitter.indents)-1]
|
|
emitter.state = emitter.states[len(emitter.states)-1]
|
|
emitter.states = emitter.states[:len(emitter.states)-1]
|
|
return true
|
|
}
|
|
if !yaml_emitter_process_head_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) {
|
|
return false
|
|
}
|
|
emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE)
|
|
if !yaml_emitter_emit_node(emitter, event, false, true, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Expect a block key node.
|
|
func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {
|
|
if first {
|
|
if !yaml_emitter_increase_indent(emitter, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_process_head_comment(emitter) {
|
|
return false
|
|
}
|
|
if event.typ == yaml_MAPPING_END_EVENT {
|
|
emitter.indent = emitter.indents[len(emitter.indents)-1]
|
|
emitter.indents = emitter.indents[:len(emitter.indents)-1]
|
|
emitter.state = emitter.states[len(emitter.states)-1]
|
|
emitter.states = emitter.states[:len(emitter.states)-1]
|
|
return true
|
|
}
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if len(emitter.line_comment) > 0 {
|
|
// [Go] A line comment was provided for the key. That's unusual as the
|
|
// scanner associates line comments with the value. Either way,
|
|
// save the line comment and render it appropriately later.
|
|
emitter.key_line_comment = emitter.line_comment
|
|
emitter.line_comment = nil
|
|
}
|
|
if yaml_emitter_check_simple_key(emitter) {
|
|
emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE)
|
|
return yaml_emitter_emit_node(emitter, event, false, false, true, true)
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) {
|
|
return false
|
|
}
|
|
emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE)
|
|
return yaml_emitter_emit_node(emitter, event, false, false, true, false)
|
|
}
|
|
|
|
// Expect a block value node.
|
|
func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool {
|
|
if simple {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) {
|
|
return false
|
|
}
|
|
} else {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) {
|
|
return false
|
|
}
|
|
}
|
|
if len(emitter.key_line_comment) > 0 {
|
|
// [Go] Line comments are generally associated with the value, but when there's
|
|
// no value on the same line as a mapping key they end up attached to the
|
|
// key itself.
|
|
if event.typ == yaml_SCALAR_EVENT {
|
|
if len(emitter.line_comment) == 0 {
|
|
// A scalar is coming and it has no line comments by itself yet,
|
|
// so just let it handle the line comment as usual. If it has a
|
|
// line comment, we can't have both so the one from the key is lost.
|
|
emitter.line_comment = emitter.key_line_comment
|
|
emitter.key_line_comment = nil
|
|
}
|
|
} else if event.sequence_style() != yaml_FLOW_SEQUENCE_STYLE && (event.typ == yaml_MAPPING_START_EVENT || event.typ == yaml_SEQUENCE_START_EVENT) {
|
|
// An indented block follows, so write the comment right now.
|
|
emitter.line_comment, emitter.key_line_comment = emitter.key_line_comment, emitter.line_comment
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
emitter.line_comment, emitter.key_line_comment = emitter.key_line_comment, emitter.line_comment
|
|
}
|
|
}
|
|
emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE)
|
|
if !yaml_emitter_emit_node(emitter, event, false, false, true, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_foot_comment(emitter) {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_silent_nil_event(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
return event.typ == yaml_SCALAR_EVENT && event.implicit && !emitter.canonical && len(emitter.scalar_data.value) == 0
|
|
}
|
|
|
|
// Expect a node.
|
|
func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t,
|
|
root bool, sequence bool, mapping bool, simple_key bool) bool {
|
|
|
|
emitter.root_context = root
|
|
emitter.sequence_context = sequence
|
|
emitter.mapping_context = mapping
|
|
emitter.simple_key_context = simple_key
|
|
|
|
switch event.typ {
|
|
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,
|
|
fmt.Sprintf("expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS, but got %v", event.typ))
|
|
}
|
|
}
|
|
|
|
// Expect ALIAS.
|
|
func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
if !yaml_emitter_process_anchor(emitter) {
|
|
return false
|
|
}
|
|
emitter.state = emitter.states[len(emitter.states)-1]
|
|
emitter.states = emitter.states[:len(emitter.states)-1]
|
|
return true
|
|
}
|
|
|
|
// Expect SCALAR.
|
|
func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
if !yaml_emitter_select_scalar_style(emitter, event) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_anchor(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_tag(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_increase_indent(emitter, true, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_scalar(emitter) {
|
|
return false
|
|
}
|
|
emitter.indent = emitter.indents[len(emitter.indents)-1]
|
|
emitter.indents = emitter.indents[:len(emitter.indents)-1]
|
|
emitter.state = emitter.states[len(emitter.states)-1]
|
|
emitter.states = emitter.states[:len(emitter.states)-1]
|
|
return true
|
|
}
|
|
|
|
// Expect SEQUENCE-START.
|
|
func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
if !yaml_emitter_process_anchor(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_tag(emitter) {
|
|
return false
|
|
}
|
|
if emitter.flow_level > 0 || emitter.canonical || event.sequence_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 true
|
|
}
|
|
|
|
// Expect MAPPING-START.
|
|
func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
if !yaml_emitter_process_anchor(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_tag(emitter) {
|
|
return false
|
|
}
|
|
if emitter.flow_level > 0 || emitter.canonical || event.mapping_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 true
|
|
}
|
|
|
|
// Check if the document content is an empty scalar.
|
|
func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool {
|
|
return false // [Go] Huh?
|
|
}
|
|
|
|
// Check if the next events represent an empty sequence.
|
|
func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool {
|
|
if len(emitter.events)-emitter.events_head < 2 {
|
|
return false
|
|
}
|
|
return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT &&
|
|
emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT
|
|
}
|
|
|
|
// Check if the next events represent an empty mapping.
|
|
func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool {
|
|
if len(emitter.events)-emitter.events_head < 2 {
|
|
return false
|
|
}
|
|
return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT &&
|
|
emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT
|
|
}
|
|
|
|
// Check if the next node can be expressed as a simple key.
|
|
func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool {
|
|
length := 0
|
|
switch emitter.events[emitter.events_head].typ {
|
|
case yaml_ALIAS_EVENT:
|
|
length += len(emitter.anchor_data.anchor)
|
|
case yaml_SCALAR_EVENT:
|
|
if emitter.scalar_data.multiline {
|
|
return false
|
|
}
|
|
length += len(emitter.anchor_data.anchor) +
|
|
len(emitter.tag_data.handle) +
|
|
len(emitter.tag_data.suffix) +
|
|
len(emitter.scalar_data.value)
|
|
case yaml_SEQUENCE_START_EVENT:
|
|
if !yaml_emitter_check_empty_sequence(emitter) {
|
|
return false
|
|
}
|
|
length += len(emitter.anchor_data.anchor) +
|
|
len(emitter.tag_data.handle) +
|
|
len(emitter.tag_data.suffix)
|
|
case yaml_MAPPING_START_EVENT:
|
|
if !yaml_emitter_check_empty_mapping(emitter) {
|
|
return false
|
|
}
|
|
length += len(emitter.anchor_data.anchor) +
|
|
len(emitter.tag_data.handle) +
|
|
len(emitter.tag_data.suffix)
|
|
default:
|
|
return false
|
|
}
|
|
return length <= 128
|
|
}
|
|
|
|
// Determine an acceptable scalar style.
|
|
func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
|
|
no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0
|
|
if no_tag && !event.implicit && !event.quoted_implicit {
|
|
return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified")
|
|
}
|
|
|
|
style := event.scalar_style()
|
|
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 > 0 && !emitter.scalar_data.flow_plain_allowed ||
|
|
emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed {
|
|
style = yaml_SINGLE_QUOTED_SCALAR_STYLE
|
|
}
|
|
if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) {
|
|
style = yaml_SINGLE_QUOTED_SCALAR_STYLE
|
|
}
|
|
if no_tag && !event.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 > 0 || emitter.simple_key_context {
|
|
style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
|
|
}
|
|
}
|
|
|
|
if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE {
|
|
emitter.tag_data.handle = []byte{'!'}
|
|
}
|
|
emitter.scalar_data.style = style
|
|
return true
|
|
}
|
|
|
|
// Write an anchor.
|
|
func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool {
|
|
if emitter.anchor_data.anchor == nil {
|
|
return true
|
|
}
|
|
c := []byte{'&'}
|
|
if emitter.anchor_data.alias {
|
|
c[0] = '*'
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, c, true, false, false) {
|
|
return false
|
|
}
|
|
return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor)
|
|
}
|
|
|
|
// Write a tag.
|
|
func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool {
|
|
if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 {
|
|
return true
|
|
}
|
|
if len(emitter.tag_data.handle) > 0 {
|
|
if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) {
|
|
return false
|
|
}
|
|
if len(emitter.tag_data.suffix) > 0 {
|
|
if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
|
|
return false
|
|
}
|
|
}
|
|
} else {
|
|
// [Go] Allocate these slices elsewhere.
|
|
if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Write a scalar.
|
|
func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool {
|
|
switch emitter.scalar_data.style {
|
|
case yaml_PLAIN_SCALAR_STYLE:
|
|
return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
|
|
|
|
case yaml_SINGLE_QUOTED_SCALAR_STYLE:
|
|
return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
|
|
|
|
case yaml_DOUBLE_QUOTED_SCALAR_STYLE:
|
|
return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context)
|
|
|
|
case yaml_LITERAL_SCALAR_STYLE:
|
|
return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value)
|
|
|
|
case yaml_FOLDED_SCALAR_STYLE:
|
|
return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value)
|
|
}
|
|
panic("unknown scalar style")
|
|
}
|
|
|
|
// Write a head comment.
|
|
func yaml_emitter_process_head_comment(emitter *yaml_emitter_t) bool {
|
|
if len(emitter.tail_comment) > 0 {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_comment(emitter, emitter.tail_comment) {
|
|
return false
|
|
}
|
|
emitter.tail_comment = emitter.tail_comment[:0]
|
|
emitter.foot_indent = emitter.indent
|
|
if emitter.foot_indent < 0 {
|
|
emitter.foot_indent = 0
|
|
}
|
|
}
|
|
|
|
if len(emitter.head_comment) == 0 {
|
|
return true
|
|
}
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_comment(emitter, emitter.head_comment) {
|
|
return false
|
|
}
|
|
emitter.head_comment = emitter.head_comment[:0]
|
|
return true
|
|
}
|
|
|
|
// Write an line comment.
|
|
func yaml_emitter_process_line_comment(emitter *yaml_emitter_t) bool {
|
|
if len(emitter.line_comment) == 0 {
|
|
return true
|
|
}
|
|
if !emitter.whitespace {
|
|
if !put(emitter, ' ') {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_write_comment(emitter, emitter.line_comment) {
|
|
return false
|
|
}
|
|
emitter.line_comment = emitter.line_comment[:0]
|
|
return true
|
|
}
|
|
|
|
// Write a foot comment.
|
|
func yaml_emitter_process_foot_comment(emitter *yaml_emitter_t) bool {
|
|
if len(emitter.foot_comment) == 0 {
|
|
return true
|
|
}
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_comment(emitter, emitter.foot_comment) {
|
|
return false
|
|
}
|
|
emitter.foot_comment = emitter.foot_comment[:0]
|
|
emitter.foot_indent = emitter.indent
|
|
if emitter.foot_indent < 0 {
|
|
emitter.foot_indent = 0
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Check if a %YAML directive is valid.
|
|
func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool {
|
|
if version_directive.major != 1 || version_directive.minor != 1 {
|
|
return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive")
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Check if a %TAG directive is valid.
|
|
func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool {
|
|
handle := tag_directive.handle
|
|
prefix := tag_directive.prefix
|
|
if len(handle) == 0 {
|
|
return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty")
|
|
}
|
|
if handle[0] != '!' {
|
|
return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'")
|
|
}
|
|
if handle[len(handle)-1] != '!' {
|
|
return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'")
|
|
}
|
|
for i := 1; i < len(handle)-1; i += width(handle[i]) {
|
|
if !is_alpha(handle, i) {
|
|
return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only")
|
|
}
|
|
}
|
|
if len(prefix) == 0 {
|
|
return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty")
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Check if an anchor is valid.
|
|
func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool {
|
|
if len(anchor) == 0 {
|
|
problem := "anchor value must not be empty"
|
|
if alias {
|
|
problem = "alias value must not be empty"
|
|
}
|
|
return yaml_emitter_set_emitter_error(emitter, problem)
|
|
}
|
|
for i := 0; i < len(anchor); i += width(anchor[i]) {
|
|
if !is_alpha(anchor, i) {
|
|
problem := "anchor value must contain alphanumerical characters only"
|
|
if alias {
|
|
problem = "alias value must contain alphanumerical characters only"
|
|
}
|
|
return yaml_emitter_set_emitter_error(emitter, problem)
|
|
}
|
|
}
|
|
emitter.anchor_data.anchor = anchor
|
|
emitter.anchor_data.alias = alias
|
|
return true
|
|
}
|
|
|
|
// Check if a tag is valid.
|
|
func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool {
|
|
if len(tag) == 0 {
|
|
return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty")
|
|
}
|
|
for i := 0; i < len(emitter.tag_directives); i++ {
|
|
tag_directive := &emitter.tag_directives[i]
|
|
if bytes.HasPrefix(tag, tag_directive.prefix) {
|
|
emitter.tag_data.handle = tag_directive.handle
|
|
emitter.tag_data.suffix = tag[len(tag_directive.prefix):]
|
|
return true
|
|
}
|
|
}
|
|
emitter.tag_data.suffix = tag
|
|
return true
|
|
}
|
|
|
|
// Check if a scalar is valid.
|
|
func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
|
|
var (
|
|
block_indicators = false
|
|
flow_indicators = false
|
|
line_breaks = false
|
|
special_characters = false
|
|
tab_characters = false
|
|
|
|
leading_space = false
|
|
leading_break = false
|
|
trailing_space = false
|
|
trailing_break = false
|
|
break_space = false
|
|
space_break = false
|
|
|
|
preceded_by_whitespace = false
|
|
followed_by_whitespace = false
|
|
previous_space = false
|
|
previous_break = false
|
|
)
|
|
|
|
emitter.scalar_data.value = value
|
|
|
|
if len(value) == 0 {
|
|
emitter.scalar_data.multiline = false
|
|
emitter.scalar_data.flow_plain_allowed = false
|
|
emitter.scalar_data.block_plain_allowed = true
|
|
emitter.scalar_data.single_quoted_allowed = true
|
|
emitter.scalar_data.block_allowed = false
|
|
return true
|
|
}
|
|
|
|
if len(value) >= 3 && ((value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.')) {
|
|
block_indicators = true
|
|
flow_indicators = true
|
|
}
|
|
|
|
preceded_by_whitespace = true
|
|
for i, w := 0, 0; i < len(value); i += w {
|
|
w = width(value[i])
|
|
followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w)
|
|
|
|
if i == 0 {
|
|
switch value[i] {
|
|
case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`':
|
|
flow_indicators = true
|
|
block_indicators = true
|
|
case '?', ':':
|
|
flow_indicators = true
|
|
if followed_by_whitespace {
|
|
block_indicators = true
|
|
}
|
|
case '-':
|
|
if followed_by_whitespace {
|
|
flow_indicators = true
|
|
block_indicators = true
|
|
}
|
|
}
|
|
} else {
|
|
switch value[i] {
|
|
case ',', '?', '[', ']', '{', '}':
|
|
flow_indicators = true
|
|
case ':':
|
|
flow_indicators = true
|
|
if followed_by_whitespace {
|
|
block_indicators = true
|
|
}
|
|
case '#':
|
|
if preceded_by_whitespace {
|
|
flow_indicators = true
|
|
block_indicators = true
|
|
}
|
|
}
|
|
}
|
|
|
|
if value[i] == '\t' {
|
|
tab_characters = true
|
|
} else if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode {
|
|
special_characters = true
|
|
}
|
|
if is_space(value, i) {
|
|
if i == 0 {
|
|
leading_space = true
|
|
}
|
|
if i+width(value[i]) == len(value) {
|
|
trailing_space = true
|
|
}
|
|
if previous_break {
|
|
break_space = true
|
|
}
|
|
previous_space = true
|
|
previous_break = false
|
|
} else if is_break(value, i) {
|
|
line_breaks = true
|
|
if i == 0 {
|
|
leading_break = true
|
|
}
|
|
if i+width(value[i]) == len(value) {
|
|
trailing_break = true
|
|
}
|
|
if previous_space {
|
|
space_break = true
|
|
}
|
|
previous_space = false
|
|
previous_break = true
|
|
} else {
|
|
previous_space = false
|
|
previous_break = false
|
|
}
|
|
|
|
// [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition.
|
|
preceded_by_whitespace = is_blankz(value, i)
|
|
}
|
|
|
|
emitter.scalar_data.multiline = line_breaks
|
|
emitter.scalar_data.flow_plain_allowed = true
|
|
emitter.scalar_data.block_plain_allowed = true
|
|
emitter.scalar_data.single_quoted_allowed = true
|
|
emitter.scalar_data.block_allowed = true
|
|
|
|
if leading_space || leading_break || trailing_space || trailing_break {
|
|
emitter.scalar_data.flow_plain_allowed = false
|
|
emitter.scalar_data.block_plain_allowed = false
|
|
}
|
|
if trailing_space {
|
|
emitter.scalar_data.block_allowed = false
|
|
}
|
|
if break_space {
|
|
emitter.scalar_data.flow_plain_allowed = false
|
|
emitter.scalar_data.block_plain_allowed = false
|
|
emitter.scalar_data.single_quoted_allowed = false
|
|
}
|
|
if space_break || tab_characters || special_characters {
|
|
emitter.scalar_data.flow_plain_allowed = false
|
|
emitter.scalar_data.block_plain_allowed = false
|
|
emitter.scalar_data.single_quoted_allowed = false
|
|
}
|
|
if space_break || special_characters {
|
|
emitter.scalar_data.block_allowed = false
|
|
}
|
|
if line_breaks {
|
|
emitter.scalar_data.flow_plain_allowed = false
|
|
emitter.scalar_data.block_plain_allowed = false
|
|
}
|
|
if flow_indicators {
|
|
emitter.scalar_data.flow_plain_allowed = false
|
|
}
|
|
if block_indicators {
|
|
emitter.scalar_data.block_plain_allowed = false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Check if the event data is valid.
|
|
func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool {
|
|
|
|
emitter.anchor_data.anchor = nil
|
|
emitter.tag_data.handle = nil
|
|
emitter.tag_data.suffix = nil
|
|
emitter.scalar_data.value = nil
|
|
|
|
if len(event.head_comment) > 0 {
|
|
emitter.head_comment = event.head_comment
|
|
}
|
|
if len(event.line_comment) > 0 {
|
|
emitter.line_comment = event.line_comment
|
|
}
|
|
if len(event.foot_comment) > 0 {
|
|
emitter.foot_comment = event.foot_comment
|
|
}
|
|
if len(event.tail_comment) > 0 {
|
|
emitter.tail_comment = event.tail_comment
|
|
}
|
|
|
|
switch event.typ {
|
|
case yaml_ALIAS_EVENT:
|
|
if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) {
|
|
return false
|
|
}
|
|
|
|
case yaml_SCALAR_EVENT:
|
|
if len(event.anchor) > 0 {
|
|
if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
|
|
return false
|
|
}
|
|
}
|
|
if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) {
|
|
if !yaml_emitter_analyze_tag(emitter, event.tag) {
|
|
return false
|
|
}
|
|
}
|
|
if !yaml_emitter_analyze_scalar(emitter, event.value) {
|
|
return false
|
|
}
|
|
|
|
case yaml_SEQUENCE_START_EVENT:
|
|
if len(event.anchor) > 0 {
|
|
if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
|
|
return false
|
|
}
|
|
}
|
|
if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
|
|
if !yaml_emitter_analyze_tag(emitter, event.tag) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
case yaml_MAPPING_START_EVENT:
|
|
if len(event.anchor) > 0 {
|
|
if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) {
|
|
return false
|
|
}
|
|
}
|
|
if len(event.tag) > 0 && (emitter.canonical || !event.implicit) {
|
|
if !yaml_emitter_analyze_tag(emitter, event.tag) {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Write the BOM character.
|
|
func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool {
|
|
if !flush(emitter) {
|
|
return false
|
|
}
|
|
pos := emitter.buffer_pos
|
|
emitter.buffer[pos+0] = '\xEF'
|
|
emitter.buffer[pos+1] = '\xBB'
|
|
emitter.buffer[pos+2] = '\xBF'
|
|
emitter.buffer_pos += 3
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool {
|
|
indent := emitter.indent
|
|
if indent < 0 {
|
|
indent = 0
|
|
}
|
|
if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) {
|
|
if !put_break(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if emitter.foot_indent == indent {
|
|
if !put_break(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
for emitter.column < indent {
|
|
if !put(emitter, ' ') {
|
|
return false
|
|
}
|
|
}
|
|
emitter.whitespace = true
|
|
//emitter.indention = true
|
|
emitter.space_above = false
|
|
emitter.foot_indent = -1
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool {
|
|
if need_whitespace && !emitter.whitespace {
|
|
if !put(emitter, ' ') {
|
|
return false
|
|
}
|
|
}
|
|
if !write_all(emitter, indicator) {
|
|
return false
|
|
}
|
|
emitter.whitespace = is_whitespace
|
|
emitter.indention = (emitter.indention && is_indention)
|
|
emitter.open_ended = false
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool {
|
|
if !write_all(emitter, value) {
|
|
return false
|
|
}
|
|
emitter.whitespace = false
|
|
emitter.indention = false
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool {
|
|
if !emitter.whitespace {
|
|
if !put(emitter, ' ') {
|
|
return false
|
|
}
|
|
}
|
|
if !write_all(emitter, value) {
|
|
return false
|
|
}
|
|
emitter.whitespace = false
|
|
emitter.indention = false
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool {
|
|
if need_whitespace && !emitter.whitespace {
|
|
if !put(emitter, ' ') {
|
|
return false
|
|
}
|
|
}
|
|
for i := 0; i < len(value); {
|
|
var must_write bool
|
|
switch value[i] {
|
|
case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']':
|
|
must_write = true
|
|
default:
|
|
must_write = is_alpha(value, i)
|
|
}
|
|
if must_write {
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
} else {
|
|
w := width(value[i])
|
|
for k := 0; k < w; k++ {
|
|
octet := value[i]
|
|
i++
|
|
if !put(emitter, '%') {
|
|
return false
|
|
}
|
|
|
|
c := octet >> 4
|
|
if c < 10 {
|
|
c += '0'
|
|
} else {
|
|
c += 'A' - 10
|
|
}
|
|
if !put(emitter, c) {
|
|
return false
|
|
}
|
|
|
|
c = octet & 0x0f
|
|
if c < 10 {
|
|
c += '0'
|
|
} else {
|
|
c += 'A' - 10
|
|
}
|
|
if !put(emitter, c) {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
}
|
|
emitter.whitespace = false
|
|
emitter.indention = false
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
|
|
if len(value) > 0 && !emitter.whitespace {
|
|
if !put(emitter, ' ') {
|
|
return false
|
|
}
|
|
}
|
|
|
|
spaces := false
|
|
breaks := false
|
|
for i := 0; i < len(value); {
|
|
if is_space(value, i) {
|
|
if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
i += width(value[i])
|
|
} else {
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
}
|
|
spaces = true
|
|
} else if is_break(value, i) {
|
|
if !breaks && value[i] == '\n' {
|
|
if !put_break(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !write_break(emitter, value, &i) {
|
|
return false
|
|
}
|
|
//emitter.indention = true
|
|
breaks = true
|
|
} else {
|
|
if breaks {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
emitter.indention = false
|
|
spaces = false
|
|
breaks = false
|
|
}
|
|
}
|
|
|
|
if len(value) > 0 {
|
|
emitter.whitespace = false
|
|
}
|
|
emitter.indention = false
|
|
if emitter.root_context {
|
|
emitter.open_ended = true
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
|
|
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) {
|
|
return false
|
|
}
|
|
|
|
spaces := false
|
|
breaks := false
|
|
for i := 0; i < len(value); {
|
|
if is_space(value, i) {
|
|
if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
i += width(value[i])
|
|
} else {
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
}
|
|
spaces = true
|
|
} else if is_break(value, i) {
|
|
if !breaks && value[i] == '\n' {
|
|
if !put_break(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !write_break(emitter, value, &i) {
|
|
return false
|
|
}
|
|
//emitter.indention = true
|
|
breaks = true
|
|
} else {
|
|
if breaks {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if value[i] == '\'' {
|
|
if !put(emitter, '\'') {
|
|
return false
|
|
}
|
|
}
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
emitter.indention = false
|
|
spaces = false
|
|
breaks = false
|
|
}
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) {
|
|
return false
|
|
}
|
|
emitter.whitespace = false
|
|
emitter.indention = false
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool {
|
|
spaces := false
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) {
|
|
return false
|
|
}
|
|
|
|
for i := 0; i < len(value); {
|
|
if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) ||
|
|
is_bom(value, i) || is_break(value, i) ||
|
|
value[i] == '"' || value[i] == '\\' {
|
|
|
|
octet := value[i]
|
|
|
|
var w int
|
|
var v rune
|
|
switch {
|
|
case octet&0x80 == 0x00:
|
|
w, v = 1, rune(octet&0x7F)
|
|
case octet&0xE0 == 0xC0:
|
|
w, v = 2, rune(octet&0x1F)
|
|
case octet&0xF0 == 0xE0:
|
|
w, v = 3, rune(octet&0x0F)
|
|
case octet&0xF8 == 0xF0:
|
|
w, v = 4, rune(octet&0x07)
|
|
}
|
|
for k := 1; k < w; k++ {
|
|
octet = value[i+k]
|
|
v = (v << 6) + (rune(octet) & 0x3F)
|
|
}
|
|
i += w
|
|
|
|
if !put(emitter, '\\') {
|
|
return false
|
|
}
|
|
|
|
var ok bool
|
|
switch v {
|
|
case 0x00:
|
|
ok = put(emitter, '0')
|
|
case 0x07:
|
|
ok = put(emitter, 'a')
|
|
case 0x08:
|
|
ok = put(emitter, 'b')
|
|
case 0x09:
|
|
ok = put(emitter, 't')
|
|
case 0x0A:
|
|
ok = put(emitter, 'n')
|
|
case 0x0b:
|
|
ok = put(emitter, 'v')
|
|
case 0x0c:
|
|
ok = put(emitter, 'f')
|
|
case 0x0d:
|
|
ok = put(emitter, 'r')
|
|
case 0x1b:
|
|
ok = put(emitter, 'e')
|
|
case 0x22:
|
|
ok = put(emitter, '"')
|
|
case 0x5c:
|
|
ok = put(emitter, '\\')
|
|
case 0x85:
|
|
ok = put(emitter, 'N')
|
|
case 0xA0:
|
|
ok = put(emitter, '_')
|
|
case 0x2028:
|
|
ok = put(emitter, 'L')
|
|
case 0x2029:
|
|
ok = put(emitter, 'P')
|
|
default:
|
|
if v <= 0xFF {
|
|
ok = put(emitter, 'x')
|
|
w = 2
|
|
} else if v <= 0xFFFF {
|
|
ok = put(emitter, 'u')
|
|
w = 4
|
|
} else {
|
|
ok = put(emitter, 'U')
|
|
w = 8
|
|
}
|
|
for k := (w - 1) * 4; ok && k >= 0; k -= 4 {
|
|
digit := byte((v >> uint(k)) & 0x0F)
|
|
if digit < 10 {
|
|
ok = put(emitter, digit+'0')
|
|
} else {
|
|
ok = put(emitter, digit+'A'-10)
|
|
}
|
|
}
|
|
}
|
|
if !ok {
|
|
return false
|
|
}
|
|
spaces = false
|
|
} else if is_space(value, i) {
|
|
if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if is_space(value, i+1) {
|
|
if !put(emitter, '\\') {
|
|
return false
|
|
}
|
|
}
|
|
i += width(value[i])
|
|
} else if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
spaces = true
|
|
} else {
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
spaces = false
|
|
}
|
|
}
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) {
|
|
return false
|
|
}
|
|
emitter.whitespace = false
|
|
emitter.indention = false
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool {
|
|
if is_space(value, 0) || is_break(value, 0) {
|
|
indent_hint := []byte{'0' + byte(emitter.best_indent)}
|
|
if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
emitter.open_ended = false
|
|
|
|
var chomp_hint [1]byte
|
|
if len(value) == 0 {
|
|
chomp_hint[0] = '-'
|
|
} else {
|
|
i := len(value) - 1
|
|
for value[i]&0xC0 == 0x80 {
|
|
i--
|
|
}
|
|
if !is_break(value, i) {
|
|
chomp_hint[0] = '-'
|
|
} else if i == 0 {
|
|
chomp_hint[0] = '+'
|
|
emitter.open_ended = true
|
|
} else {
|
|
i--
|
|
for value[i]&0xC0 == 0x80 {
|
|
i--
|
|
}
|
|
if is_break(value, i) {
|
|
chomp_hint[0] = '+'
|
|
emitter.open_ended = true
|
|
}
|
|
}
|
|
}
|
|
if chomp_hint[0] != 0 {
|
|
if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_block_scalar_hints(emitter, value) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
//emitter.indention = true
|
|
emitter.whitespace = true
|
|
breaks := true
|
|
for i := 0; i < len(value); {
|
|
if is_break(value, i) {
|
|
if !write_break(emitter, value, &i) {
|
|
return false
|
|
}
|
|
//emitter.indention = true
|
|
breaks = true
|
|
} else {
|
|
if breaks {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
emitter.indention = false
|
|
breaks = false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool {
|
|
if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_write_block_scalar_hints(emitter, value) {
|
|
return false
|
|
}
|
|
if !yaml_emitter_process_line_comment(emitter) {
|
|
return false
|
|
}
|
|
|
|
//emitter.indention = true
|
|
emitter.whitespace = true
|
|
|
|
breaks := true
|
|
leading_spaces := true
|
|
for i := 0; i < len(value); {
|
|
if is_break(value, i) {
|
|
if !breaks && !leading_spaces && value[i] == '\n' {
|
|
k := 0
|
|
for is_break(value, k) {
|
|
k += width(value[k])
|
|
}
|
|
if !is_blankz(value, k) {
|
|
if !put_break(emitter) {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
if !write_break(emitter, value, &i) {
|
|
return false
|
|
}
|
|
//emitter.indention = true
|
|
breaks = true
|
|
} else {
|
|
if breaks {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
leading_spaces = is_blank(value, i)
|
|
}
|
|
if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width {
|
|
if !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
i += width(value[i])
|
|
} else {
|
|
if !write(emitter, value, &i) {
|
|
return false
|
|
}
|
|
}
|
|
emitter.indention = false
|
|
breaks = false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func yaml_emitter_write_comment(emitter *yaml_emitter_t, comment []byte) bool {
|
|
breaks := false
|
|
pound := false
|
|
for i := 0; i < len(comment); {
|
|
if is_break(comment, i) {
|
|
if !write_break(emitter, comment, &i) {
|
|
return false
|
|
}
|
|
//emitter.indention = true
|
|
breaks = true
|
|
pound = false
|
|
} else {
|
|
if breaks && !yaml_emitter_write_indent(emitter) {
|
|
return false
|
|
}
|
|
if !pound {
|
|
if comment[i] != '#' && (!put(emitter, '#') || !put(emitter, ' ')) {
|
|
return false
|
|
}
|
|
pound = true
|
|
}
|
|
if !write(emitter, comment, &i) {
|
|
return false
|
|
}
|
|
emitter.indention = false
|
|
breaks = false
|
|
}
|
|
}
|
|
if !breaks && !put_break(emitter) {
|
|
return false
|
|
}
|
|
|
|
emitter.whitespace = true
|
|
//emitter.indention = true
|
|
return true
|
|
}
|