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117 lines
2.3 KiB
Go
117 lines
2.3 KiB
Go
// Copyright 2015 The Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package markdown
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import (
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"bytes"
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"unicode"
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"unicode/utf8"
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)
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type StateInline struct {
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StateCore
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Pos int
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PosMax int
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Level int
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Pending bytes.Buffer
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PendingLevel int
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Delimiters []Delimiter
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Cache map[int]int
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}
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func (s *StateInline) PushToken(tok Token) {
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if s.Pending.Len() > 0 {
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s.PushPending()
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}
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tok.SetLevel(s.Level)
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s.PendingLevel = s.Level
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s.Tokens = append(s.Tokens, tok)
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}
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func (s *StateInline) PushOpeningToken(tok Token) {
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if s.Pending.Len() > 0 {
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s.PushPending()
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}
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tok.SetLevel(s.Level)
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s.Level++
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s.PendingLevel = s.Level
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s.Tokens = append(s.Tokens, tok)
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}
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func (s *StateInline) PushClosingToken(tok Token) {
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if s.Pending.Len() > 0 {
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s.PushPending()
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}
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s.Level--
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tok.SetLevel(s.Level)
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s.PendingLevel = s.Level
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s.Tokens = append(s.Tokens, tok)
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}
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func (s *StateInline) PushPending() {
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s.Tokens = append(s.Tokens, &Text{
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Content: s.Pending.String(),
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Lvl: s.PendingLevel,
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})
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s.Pending.Reset()
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}
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func (s *StateInline) scanDelims(start int, canSplitWord bool) (canOpen bool, canClose bool, length int) {
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pos := start
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max := s.PosMax
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src := s.Src
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marker := src[start]
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leftFlanking, rightFlanking := true, true
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lastChar := ' '
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if start > 0 {
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lastChar, _ = utf8.DecodeLastRuneInString(src[:start])
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}
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for pos < max && src[pos] == marker {
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pos++
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}
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length = pos - start
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nextChar := ' '
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if pos < max {
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nextChar, _ = utf8.DecodeRuneInString(src[pos:])
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}
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isLastPunct := isMdAsciiPunct(lastChar) || unicode.IsPunct(lastChar)
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isNextPunct := isMdAsciiPunct(nextChar) || unicode.IsPunct(nextChar)
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isLastWhiteSpace := unicode.IsSpace(lastChar)
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isNextWhiteSpace := unicode.IsSpace(nextChar)
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if isNextWhiteSpace {
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leftFlanking = false
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} else if isNextPunct {
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if !(isLastWhiteSpace || isLastPunct) {
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leftFlanking = false
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}
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}
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if isLastWhiteSpace {
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rightFlanking = false
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} else if isLastPunct {
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if !(isNextWhiteSpace || isNextPunct) {
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rightFlanking = false
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}
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}
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if !canSplitWord {
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canOpen = leftFlanking && (!rightFlanking || isLastPunct)
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canClose = rightFlanking && (!leftFlanking || isNextPunct)
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} else {
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canOpen = leftFlanking
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canClose = rightFlanking
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}
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return
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}
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