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74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
package parser
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import (
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"bytes"
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"github.com/gomarkdown/markdown/ast"
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)
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// returns aisde prefix length
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func (p *Parser) asidePrefix(data []byte) int {
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i := 0
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n := len(data)
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for i < 3 && i < n && data[i] == ' ' {
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i++
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}
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if i+1 < n && data[i] == 'A' && data[i+1] == '>' {
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if i+2 < n && data[i+2] == ' ' {
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return i + 3
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}
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return i + 2
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}
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return 0
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}
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// aside ends with at least one blank line
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// followed by something without a aside prefix
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func (p *Parser) terminateAside(data []byte, beg, end int) bool {
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if IsEmpty(data[beg:]) <= 0 {
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return false
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}
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if end >= len(data) {
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return true
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}
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return p.asidePrefix(data[end:]) == 0 && IsEmpty(data[end:]) == 0
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}
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// parse a aside fragment
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func (p *Parser) aside(data []byte) int {
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var raw bytes.Buffer
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beg, end := 0, 0
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// identical to quote
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for beg < len(data) {
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end = beg
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// Step over whole lines, collecting them. While doing that, check for
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// fenced code and if one's found, incorporate it altogether,
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// irregardless of any contents inside it
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for end < len(data) && data[end] != '\n' {
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if p.extensions&FencedCode != 0 {
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if i := p.fencedCodeBlock(data[end:], false); i > 0 {
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// -1 to compensate for the extra end++ after the loop:
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end += i - 1
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break
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}
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}
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end++
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}
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end = skipCharN(data, end, '\n', 1)
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if pre := p.asidePrefix(data[beg:]); pre > 0 {
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// skip the prefix
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beg += pre
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} else if p.terminateAside(data, beg, end) {
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break
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}
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// this line is part of the aside
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raw.Write(data[beg:end])
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beg = end
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}
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block := p.AddBlock(&ast.Aside{})
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p.Block(raw.Bytes())
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p.Finalize(block)
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return end
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}
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