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strikethrough.go
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/
strikethrough.go
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// 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
func ruleStrikeThrough(s *StateInline, silent bool) (_ bool) {
start := s.Pos
max := s.PosMax
src := s.Src
if src[start] != '~' {
return
}
if silent {
return
}
canOpen, canClose, delims := scanDelims(s, start)
startCount := delims
if !canOpen {
s.Pos += startCount
s.Pending.WriteString(src[start:s.Pos])
return true
}
stack := startCount / 2
if stack <= 0 {
return
}
s.Pos = start + startCount
var found bool
for s.Pos < max {
if src[s.Pos] == '~' {
canOpen, canClose, delims = scanDelims(s, s.Pos)
count := delims
tagCount := count / 2
if canClose {
if tagCount >= stack {
s.Pos += count - 2
found = true
break
}
stack -= tagCount
s.Pos += count
continue
}
if canOpen {
stack += tagCount
}
s.Pos += count
continue
}
s.Md.Inline.SkipToken(s)
}
if !found {
s.Pos = start
return
}
s.PosMax = s.Pos
s.Pos = start + 2
s.PushOpeningToken(&StrikethroughOpen{})
s.Md.Inline.Tokenize(s)
s.PushClosingToken(&StrikethroughClose{})
s.Pos = s.PosMax + 2
s.PosMax = max
return true
}