58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
|
// Copyright 2015 The Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package markdown
|
||
|
|
|
||
|
|
import "regexp"
|
||
|
|
|
||
|
|
var (
|
||
|
|
attrName = `[a-zA-Z_:][a-zA-Z0-9:._-]*`
|
||
|
|
unquoted = "[^\"'=<>`\\x00-\\x20]+"
|
||
|
|
singleQuoted = `'[^']*'`
|
||
|
|
doubleQuoted = `"[^"]*"`
|
||
|
|
attrValue = `(?:` + unquoted + `|` + singleQuoted + `|` + doubleQuoted + `)`
|
||
|
|
attribute = `(?:\s+` + attrName + `(?:\s*=\s*` + attrValue + `)?)`
|
||
|
|
openTag = `<[A-Za-z][A-Za-z0-9-]*` + attribute + `*\s*/?>`
|
||
|
|
closeTag = `</[A-Za-z][A-Za-z0-9-]*\s*>`
|
||
|
|
comment = `<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->`
|
||
|
|
processing = `<[?].*?[?]>`
|
||
|
|
declaration = `<![A-Z]+\s+[^>]*>`
|
||
|
|
cdata = `<!\[CDATA\[[\s\S]*?\]\]>`
|
||
|
|
rHTMLTag = regexp.MustCompile(`^(?:` + openTag + `|` + closeTag + `|` + comment +
|
||
|
|
`|` + processing + `|` + declaration + `|` + cdata + `)`)
|
||
|
|
)
|
||
|
|
|
||
|
|
func htmlSecond(b byte) bool {
|
||
|
|
return b == '!' || b == '/' || b == '?' || isLetter(b)
|
||
|
|
}
|
||
|
|
|
||
|
|
func ruleHTMLInline(s *StateInline, silent bool) bool {
|
||
|
|
if !s.Md.HTML {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
pos := s.Pos
|
||
|
|
src := s.Src
|
||
|
|
if pos+2 >= s.PosMax || src[pos] != '<' {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
if !htmlSecond(src[pos+1]) {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
match := rHTMLTag.FindString(src[pos:])
|
||
|
|
if match == "" {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
if !silent {
|
||
|
|
s.PushToken(&HTMLInline{Content: match})
|
||
|
|
}
|
||
|
|
|
||
|
|
s.Pos += len(match)
|
||
|
|
|
||
|
|
return true
|
||
|
|
}
|