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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| bin | ||
| .env | ||
| .DS_Store | ||
| .DS_Store | ||
| malta |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/alecthomas/chroma" | ||
| "github.com/alecthomas/chroma/formatters/html" | ||
| "github.com/alecthomas/chroma/lexers" | ||
| "github.com/alecthomas/chroma/styles" | ||
| "github.com/yuin/goldmark/ast" | ||
| "github.com/yuin/goldmark/parser" | ||
| "github.com/yuin/goldmark/renderer" | ||
| "github.com/yuin/goldmark/text" | ||
| "github.com/yuin/goldmark/util" | ||
| ) | ||
|
|
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| type codeBlockLinksAstTransformer struct{} | ||
|
|
||
| func (a codeBlockLinksAstTransformer) Transform(node *ast.Document, reader text.Reader, pc parser.Context) { | ||
| walker := func(n ast.Node, entering bool) (ast.WalkStatus, error) { | ||
| if !entering { | ||
| return ast.WalkContinue, nil | ||
| } | ||
| if n.Kind() != ast.KindFencedCodeBlock { | ||
| return ast.WalkContinue, nil | ||
| } | ||
| lineCount := n.Lines().Len() | ||
| defCount := 0 | ||
| for i := 0; i < lineCount; i++ { | ||
| lineValue := string(reader.Value(n.Lines().At(i))) | ||
| if !strings.HasPrefix(lineValue, "//$") { | ||
| break | ||
| } | ||
| defCount += 1 | ||
| keyValue := strings.Split(strings.TrimSpace(strings.Replace(lineValue, "//$", "", 1)), "=") | ||
| if len(keyValue) != 2 { | ||
| continue | ||
| } | ||
| n.SetAttribute([]byte("link:"+keyValue[0]), keyValue[1]) | ||
| } | ||
| n.Lines().SetSliced(defCount, n.Lines().Len()) | ||
| return ast.WalkContinue, nil | ||
| } | ||
| ast.Walk(node, walker) | ||
| } | ||
|
|
||
| type codeBlockLinksRenderer struct{} | ||
|
|
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| func (r codeBlockLinksRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) { | ||
| reg.Register(ast.KindFencedCodeBlock, r.renderCustomCodeBlockLinks) | ||
| } | ||
|
|
||
| func (r codeBlockLinksRenderer) renderCustomCodeBlockLinks(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) { | ||
| if entering { | ||
| return ast.WalkContinue, nil | ||
| } | ||
| codeBlock := node.(*ast.FencedCodeBlock) | ||
|
|
||
| var content string | ||
| for i := 0; i < codeBlock.Lines().Len(); i++ { | ||
| line := codeBlock.Lines().At(i) | ||
| content += string(line.Value(source)) | ||
| } | ||
| lexer := lexers.Get(string(codeBlock.Language(source))) | ||
| if lexer == nil { | ||
| w.WriteString("<pre class=\"codeblock\"><code>") | ||
| w.WriteString(content) | ||
| w.WriteString("</code></pre>") | ||
| return ast.WalkContinue, nil | ||
| } | ||
| lexer = chroma.Coalesce(lexer) | ||
|
|
||
| formatter := html.New(html.WithClasses(true), html.PreventSurroundingPre(true)) | ||
|
|
||
| iterator, err := lexer.Tokenise(nil, content) | ||
| if err != nil { | ||
| return ast.WalkStop, err | ||
| } | ||
| buf := new(bytes.Buffer) | ||
| // random style | ||
| formatter.Format(buf, styles.GitHub, iterator) | ||
|
|
||
| html := buf.String() | ||
| for _, attribute := range node.Attributes() { | ||
| attributeName := string(attribute.Name) | ||
| if !strings.HasPrefix(attributeName, "link:") { | ||
| continue | ||
| } | ||
| target := strings.Replace(attributeName, "link:", "", 1) | ||
| dest := attribute.Value.(string) | ||
| html = strings.ReplaceAll(html, "$$"+target, fmt.Sprintf("<a href=\"%s\">%s</a>", dest, target)) | ||
| } | ||
|
|
||
| w.WriteString("<pre class=\"codeblock\"><code>") | ||
| w.WriteString(html) | ||
| w.WriteString("</code></pre>") | ||
|
|
||
| return ast.WalkContinue, nil | ||
| } |
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