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package tailwind
import (
"bytes"
"fmt"
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/text"
)
type TailwindTransformer struct{}
func (t *TailwindTransformer) Transform(node *ast.Document, reader text.Reader, pc parser.Context) {
ast.Walk(node, func(n ast.Node, entering bool) (ast.WalkStatus, error) {
if !entering {
return ast.WalkContinue, nil
}
switch node := n.(type) {
case *ast.Heading:
classes := map[int]string{
1: "font-gentium text-4xl font-bold text-main-hard mb-3 tracking-[.0125rem]",
2: "font-gentium text-3xl font-bold text-main-hard mb-1 tracking-[.0125rem]",
3: "font-gentium text-2xl font-medium text-main-hard mb-0.8 tracking-[.0125rem]",
4: "font-gentium text-xl font-medium text-main-medium mb-0.5 tracking-[.0125rem]",
5: "font-gentium text-base font-medium text-main-medium mb-0.5 italic tracking-[.0125rem]",
6: "font-gentium text-base font-medium text-secondary mb-0.5",
}
if class, ok := classes[node.Level]; ok {
node.SetAttribute([]byte("class"), []byte(class))
}
case *ast.Paragraph:
node.SetAttribute([]byte("class"), []byte("text-base/[2] font-gentium tracking-[.0125rem] -indent-8 ml-4 mb-8"))
case *ast.List:
if node.IsOrdered() {
node.SetAttribute([]byte("class"), []byte("list-decimal list-inside space-y-2 mb-4 pl-8"))
} else {
node.SetAttribute([]byte("class"), []byte("list-disc list-inside space-y-2 mb-4 pl-8"))
}
case *ast.ListItem:
node.SetAttribute([]byte("class"), []byte("text-base/[2] font-gentium tracking-[.0125rem]"))
case *ast.Blockquote:
node.SetAttribute([]byte("class"), []byte("border-l-2 border-main-medium bg-paper bg-background-dark p-1 mb-2 italic font-thin"))
case *ast.CodeSpan:
node.SetAttribute([]byte("class"), []byte("bg-paper bg-background-dark"))
case *ast.CodeBlock, *ast.FencedCodeBlock:
node.SetAttribute([]byte("class"), []byte("bg-paper bg-background-dark p-1 rounded-lg overflow-x-auto mb-4"))
case *ast.Link:
if bytes.HasPrefix(node.Destination, []byte{'.', '/'}) {
onclickAttr := fmt.Appendf(make([]byte, 0, 21+len(node.Destination)), "return changeUrl('%s');", node.Destination)
node.SetAttribute([]byte("onclick"), onclickAttr)
}
node.SetAttribute([]byte("class"), []byte("text-secondary hover:text-main-hard underline"))
case *ast.Image:
node.SetAttribute([]byte("class"), []byte("max-w-full h-auto rounded-lg shadow-lg mb-4"))
case *ast.Emphasis:
switch node.Level {
case 1:
node.SetAttribute([]byte("class"), []byte("italic font-thin"))
case 2:
node.SetAttribute([]byte("class"), []byte("font-bold"))
case 3:
node.SetAttribute([]byte("class"), []byte("italic font-bold"))
}
}
return ast.WalkContinue, nil
})
}
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