charles 2024-06-30 07:23:47 +08:00 committed by GitHub
parent 91745ae46f
commit f0033051d5
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6 changed files with 79 additions and 6 deletions

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@ -555,6 +555,14 @@ func TestMathBlock(t *testing.T) {
"$a$ ($b$) [$c$] {$d$}",
`<p><code class="language-math is-loading">a</code> (<code class="language-math is-loading">b</code>) [$c$] {$d$}</p>` + nl,
},
{
"$$a$$ test",
`<p><code class="language-math display is-loading">a</code> test</p>` + nl,
},
{
"test $$a$$",
`<p>test <code class="language-math display is-loading">a</code></p>` + nl,
},
}
for _, test := range testcases {

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@ -53,6 +53,12 @@ func (b *blockParser) Open(parent ast.Node, reader text.Reader, pc parser.Contex
}
idx := bytes.Index(line[pos+2:], endBytes)
if idx >= 0 {
// for case $$ ... $$ any other text
for i := pos + idx + 4; i < len(line); i++ {
if line[i] != ' ' && line[i] != '\n' {
return nil, parser.NoChildren
}
}
segment.Stop = segment.Start + idx + 2
reader.Advance(segment.Len() - 1)
segment.Start += 2

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@ -0,0 +1,31 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package math
import (
"github.com/yuin/goldmark/ast"
)
// InlineBlock represents inline math e.g. $$...$$
type InlineBlock struct {
Inline
}
// InlineBlock implements InlineBlock.
func (n *InlineBlock) InlineBlock() {}
// KindInlineBlock is the kind for math inline block
var KindInlineBlock = ast.NewNodeKind("MathInlineBlock")
// Kind returns KindInlineBlock
func (n *InlineBlock) Kind() ast.NodeKind {
return KindInlineBlock
}
// NewInlineBlock creates a new ast math inline block node
func NewInlineBlock() *InlineBlock {
return &InlineBlock{
Inline{},
}
}

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@ -21,11 +21,20 @@ var defaultInlineDollarParser = &inlineParser{
end: []byte{'$'},
}
var defaultDualDollarParser = &inlineParser{
start: []byte{'$', '$'},
end: []byte{'$', '$'},
}
// NewInlineDollarParser returns a new inline parser
func NewInlineDollarParser() parser.InlineParser {
return defaultInlineDollarParser
}
func NewInlineDualDollarParser() parser.InlineParser {
return defaultDualDollarParser
}
var defaultInlineBracketParser = &inlineParser{
start: []byte{'\\', '('},
end: []byte{'\\', ')'},
@ -38,7 +47,7 @@ func NewInlineBracketParser() parser.InlineParser {
// Trigger triggers this parser on $ or \
func (parser *inlineParser) Trigger() []byte {
return parser.start[0:1]
return parser.start
}
func isPunctuation(b byte) bool {
@ -88,7 +97,11 @@ func (parser *inlineParser) Parse(parent ast.Node, block text.Reader, pc parser.
break
}
suceedingCharacter := line[pos]
if !isPunctuation(suceedingCharacter) && !(suceedingCharacter == ' ') && !isBracket(suceedingCharacter) {
// check valid ending character
if !isPunctuation(suceedingCharacter) &&
!(suceedingCharacter == ' ') &&
!(suceedingCharacter == '\n') &&
!isBracket(suceedingCharacter) {
return nil
}
if line[ender-1] != '\\' {
@ -101,12 +114,21 @@ func (parser *inlineParser) Parse(parent ast.Node, block text.Reader, pc parser.
block.Advance(opener)
_, pos := block.Position()
node := NewInline()
var node ast.Node
if parser == defaultDualDollarParser {
node = NewInlineBlock()
} else {
node = NewInline()
}
segment := pos.WithStop(pos.Start + ender - opener)
node.AppendChild(node, ast.NewRawTextSegment(segment))
block.Advance(ender - opener + len(parser.end))
trimBlock(node, block)
if parser == defaultDualDollarParser {
trimBlock(&(node.(*InlineBlock)).Inline, block)
} else {
trimBlock(node.(*Inline), block)
}
return node
}

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@ -21,7 +21,11 @@ func NewInlineRenderer() renderer.NodeRenderer {
func (r *InlineRenderer) renderInline(w util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) {
if entering {
_, _ = w.WriteString(`<code class="language-math is-loading">`)
extraClass := ""
if _, ok := n.(*InlineBlock); ok {
extraClass = "display "
}
_, _ = w.WriteString(`<code class="language-math ` + extraClass + `is-loading">`)
for c := n.FirstChild(); c != nil; c = c.NextSibling() {
segment := c.(*ast.Text).Segment
value := util.EscapeHTML(segment.Value(source))
@ -43,4 +47,5 @@ func (r *InlineRenderer) renderInline(w util.BufWriter, source []byte, n ast.Nod
// RegisterFuncs registers the renderer for inline math nodes
func (r *InlineRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
reg.Register(KindInline, r.renderInline)
reg.Register(KindInlineBlock, r.renderInline)
}

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@ -96,7 +96,8 @@ func (e *Extension) Extend(m goldmark.Markdown) {
util.Prioritized(NewInlineBracketParser(), 501),
}
if e.parseDollarInline {
inlines = append(inlines, util.Prioritized(NewInlineDollarParser(), 501))
inlines = append(inlines, util.Prioritized(NewInlineDollarParser(), 503),
util.Prioritized(NewInlineDualDollarParser(), 502))
}
m.Parser().AddOptions(parser.WithInlineParsers(inlines...))