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117 lines
2.6 KiB
117 lines
2.6 KiB
// MIT License
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// Copyright (c) 2019 Muhammad Muzzammil
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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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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// 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 jsonc
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const (
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ESCAPE = 92
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QUOTE = 34
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SPACE = 32
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TAB = 9
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NEWLINE = 10
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ASTERISK = 42
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SLASH = 47
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HASH = 35
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)
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func translate(s []byte) []byte {
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var (
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i int
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quote bool
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escaped bool
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)
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j := make([]byte, len(s))
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comment := &commentData{}
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for _, ch := range s {
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if ch == ESCAPE || escaped {
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if !comment.startted {
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j[i] = ch
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i++
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}
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escaped = !escaped
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continue
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}
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if ch == QUOTE {
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quote = !quote
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}
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if (ch == SPACE || ch == TAB) && !quote {
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continue
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}
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if ch == NEWLINE {
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if comment.isSingleLined {
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comment.stop()
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}
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continue
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}
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if quote && !comment.startted {
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j[i] = ch
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i++
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continue
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}
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if comment.startted {
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if ch == ASTERISK && !comment.isSingleLined {
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comment.canEnd = true
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continue
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}
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if comment.canEnd && ch == SLASH && !comment.isSingleLined {
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comment.stop()
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continue
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}
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comment.canEnd = false
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continue
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}
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if comment.canStart && (ch == ASTERISK || ch == SLASH) {
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comment.start(ch)
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continue
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}
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if ch == SLASH {
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comment.canStart = true
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continue
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}
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if ch == HASH {
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comment.start(ch)
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continue
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}
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j[i] = ch
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i++
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}
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return j[:i]
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}
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type commentData struct {
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canStart bool
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canEnd bool
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startted bool
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isSingleLined bool
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endLine int
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}
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func (c *commentData) stop() {
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c.startted = false
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c.canStart = false
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}
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func (c *commentData) start(ch byte) {
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c.startted = true
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c.isSingleLined = ch == SLASH || ch == HASH
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}
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