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Add SVG parser (#346)

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This commit is contained in:
Thomas Miceli
2024-10-14 21:20:56 +02:00
committed by GitHub
parent 3068588111
commit df226cbd99
11 changed files with 267 additions and 76 deletions
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88
internal/render/markdown.go
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@ -1,24 +1,17 @@
package render
import (
"bufio"
"bytes"
"github.com/Kunde21/markdownfmt/v3"
"github.com/alecthomas/chroma/v2/formatters/html"
"github.com/rs/zerolog/log"
"github.com/thomiceli/opengist/internal/db"
"github.com/thomiceli/opengist/internal/git"
"github.com/yuin/goldmark"
emoji "github.com/yuin/goldmark-emoji"
highlighting "github.com/yuin/goldmark-highlighting/v2"
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/extension"
astex "github.com/yuin/goldmark/extension/ast"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/text"
"github.com/yuin/goldmark/util"
"go.abhg.dev/goldmark/mermaid"
"strconv"
)
func MarkdownGistPreview(gist *db.Gist) (RenderedGist, error) {
@ -33,7 +26,7 @@ func MarkdownGistPreview(gist *db.Gist) (RenderedGist, error) {
func MarkdownFile(file *git.File) (RenderedFile, error) {
var buf bytes.Buffer
err := newMarkdown().Convert([]byte(file.Content), &buf)
err := newMarkdownWithSvgExtension().Convert([]byte(file.Content), &buf)
return RenderedFile{
File: file,
@ -43,77 +36,34 @@ func MarkdownFile(file *git.File) (RenderedFile, error) {
}
func MarkdownString(content string) (string, error) {
var buf bytes.Buffer
err := newMarkdown().Convert([]byte(content), &buf)
err := newMarkdownWithSvgExtension().Convert([]byte(content), &buf)
return buf.String(), err
}
func newMarkdown() goldmark.Markdown {
return goldmark.New(
goldmark.WithExtensions(
extension.GFM,
highlighting.NewHighlighting(
highlighting.WithStyle("catppuccin-latte"),
highlighting.WithFormatOptions(html.WithClasses(true))),
emoji.Emoji,
&mermaid.Extender{},
func newMarkdown(extraExtensions ...goldmark.Extender) goldmark.Markdown {
extensions := []goldmark.Extender{
extension.GFM,
highlighting.NewHighlighting(
highlighting.WithStyle("catppuccin-latte"),
highlighting.WithFormatOptions(html.WithClasses(true)),
),
emoji.Emoji,
&mermaid.Extender{},
}
extensions = append(extensions, extraExtensions...)
return goldmark.New(
goldmark.WithExtensions(extensions...),
goldmark.WithParserOptions(
parser.WithASTTransformers(
util.Prioritized(&CheckboxTransformer{}, 10000),
util.Prioritized(&checkboxTransformer{}, 10000),
),
),
)
}
type CheckboxTransformer struct{}
func (t *CheckboxTransformer) Transform(node *ast.Document, _ text.Reader, _ parser.Context) {
i := 1
err := ast.Walk(node, func(n ast.Node, entering bool) (ast.WalkStatus, error) {
if entering {
if _, ok := n.(*astex.TaskCheckBox); ok {
listitem := n.Parent().Parent()
listitem.SetAttribute([]byte("data-checkbox-nb"), []byte(strconv.Itoa(i)))
i += 1
}
}
return ast.WalkContinue, nil
})
if err != nil {
log.Err(err)
}
}
func Checkbox(content string, checkboxNb int) (string, error) {
buf := bytes.Buffer{}
w := bufio.NewWriter(&buf)
source := []byte(content)
markdown := markdownfmt.NewGoldmark()
reader := text.NewReader(source)
document := markdown.Parser().Parse(reader)
i := 1
err := ast.Walk(document, func(n ast.Node, entering bool) (ast.WalkStatus, error) {
if entering {
if listItem, ok := n.(*astex.TaskCheckBox); ok {
if i == checkboxNb {
listItem.IsChecked = !listItem.IsChecked
}
i += 1
}
}
return ast.WalkContinue, nil
})
if err != nil {
return "", err
}
if err = markdown.Renderer().Render(w, source, document); err != nil {
return "", err
}
_ = w.Flush()
return buf.String(), nil
func newMarkdownWithSvgExtension() goldmark.Markdown {
return newMarkdown(&svgToImgBase64{})
}