forked from
tangled.org/core
Monorepo for Tangled
appview/pages/markup: add Dashes extension and export NewMarkdownWith
Signed-off-by: Anirudh Oppiliappan <anirudh@tangled.org>
+93
-22
+64
appview/pages/markup/extension/dashes.go
+64
appview/pages/markup/extension/dashes.go
···
1
+
package extension
2
+
3
+
import (
4
+
"github.com/yuin/goldmark"
5
+
gast "github.com/yuin/goldmark/ast"
6
+
"github.com/yuin/goldmark/parser"
7
+
"github.com/yuin/goldmark/text"
8
+
"github.com/yuin/goldmark/util"
9
+
)
10
+
11
+
type dashParser struct{}
12
+
13
+
func (p *dashParser) Trigger() []byte {
14
+
return []byte{'-'}
15
+
}
16
+
17
+
func (p *dashParser) Parse(parent gast.Node, block text.Reader, pc parser.Context) gast.Node {
18
+
line, _ := block.PeekLine()
19
+
if len(line) < 2 || line[0] != '-' || line[1] != '-' {
20
+
return nil
21
+
}
22
+
node := gast.NewString([]byte("\u2014"))
23
+
node.SetCode(true)
24
+
block.Advance(2)
25
+
return node
26
+
}
27
+
28
+
type digitDashParser struct{}
29
+
30
+
func (p *digitDashParser) Trigger() []byte {
31
+
return []byte{'-'}
32
+
}
33
+
34
+
func (p *digitDashParser) Parse(parent gast.Node, block text.Reader, pc parser.Context) gast.Node {
35
+
line, _ := block.PeekLine()
36
+
if len(line) < 2 {
37
+
return nil
38
+
}
39
+
before := block.PrecendingCharacter()
40
+
if before < '0' || before > '9' {
41
+
return nil
42
+
}
43
+
if line[1] < '0' || line[1] > '9' {
44
+
return nil
45
+
}
46
+
node := gast.NewString([]byte("\u2013"))
47
+
node.SetCode(true)
48
+
block.Advance(1)
49
+
return node
50
+
}
51
+
52
+
type dashExt struct{}
53
+
54
+
// Dashes replaces "--" with an em-dash (—) and a hyphen between two digits
55
+
// with an en-dash (–). Implemented as an inline parser so it operates on the
56
+
// raw byte stream, unaffected by hard-wrapped source lines.
57
+
var Dashes goldmark.Extender = &dashExt{}
58
+
59
+
func (e *dashExt) Extend(m goldmark.Markdown) {
60
+
m.Parser().AddOptions(parser.WithInlineParsers(
61
+
util.Prioritized(&dashParser{}, 9990),
62
+
util.Prioritized(&digitDashParser{}, 9991),
63
+
))
64
+
}
+29
-22
appview/pages/markup/markdown.go
+29
-22
appview/pages/markup/markdown.go
···
13
13
chromahtml "github.com/alecthomas/chroma/v2/formatters/html"
14
14
"github.com/alecthomas/chroma/v2/styles"
15
15
"github.com/yuin/goldmark"
16
-
"github.com/yuin/goldmark-emoji"
16
+
emoji "github.com/yuin/goldmark-emoji"
17
17
highlighting "github.com/yuin/goldmark-highlighting/v2"
18
18
"github.com/yuin/goldmark/ast"
19
19
"github.com/yuin/goldmark/extension"
···
53
53
Files fs.FS
54
54
}
55
55
56
-
func NewMarkdown(hostname string) goldmark.Markdown {
57
-
md := goldmark.New(
58
-
goldmark.WithExtensions(
59
-
extension.GFM,
60
-
&mermaid.Extender{
61
-
RenderMode: mermaid.RenderModeClient,
62
-
NoScript: true,
63
-
},
64
-
highlighting.NewHighlighting(
65
-
highlighting.WithFormatOptions(
66
-
chromahtml.Standalone(false),
67
-
chromahtml.WithClasses(true),
68
-
),
69
-
highlighting.WithCustomStyle(styles.Get("catppuccin-latte")),
56
+
func NewMarkdown(hostname string, extra ...goldmark.Extender) goldmark.Markdown {
57
+
exts := []goldmark.Extender{
58
+
extension.GFM,
59
+
&mermaid.Extender{
60
+
RenderMode: mermaid.RenderModeClient,
61
+
NoScript: true,
62
+
},
63
+
highlighting.NewHighlighting(
64
+
highlighting.WithFormatOptions(
65
+
chromahtml.Standalone(false),
66
+
chromahtml.WithClasses(true),
70
67
),
71
-
extension.NewFootnote(
72
-
extension.WithFootnoteIDPrefix([]byte("footnote")),
73
-
),
74
-
callout.CalloutExtention,
75
-
textension.AtExt,
76
-
textension.NewTangledLinkExt(hostname),
77
-
emoji.Emoji,
68
+
highlighting.WithCustomStyle(styles.Get("catppuccin-latte")),
78
69
),
70
+
extension.NewFootnote(
71
+
extension.WithFootnoteIDPrefix([]byte("footnote")),
72
+
),
73
+
callout.CalloutExtention,
74
+
textension.AtExt,
75
+
textension.NewTangledLinkExt(hostname),
76
+
emoji.Emoji,
77
+
}
78
+
exts = append(exts, extra...)
79
+
md := goldmark.New(
80
+
goldmark.WithExtensions(exts...),
79
81
goldmark.WithParserOptions(
80
82
parser.WithAutoHeadingID(),
81
83
),
82
84
goldmark.WithRendererOptions(html.WithUnsafe()),
83
85
)
84
86
return md
87
+
}
88
+
89
+
// NewMarkdownWith is an alias for NewMarkdown with extra extensions.
90
+
func NewMarkdownWith(hostname string, extra ...goldmark.Extender) goldmark.Markdown {
91
+
return NewMarkdown(hostname, extra...)
85
92
}
86
93
87
94
func (rctx *RenderContext) RenderMarkdown(source string) string {