forked from Shiloh/githaven
68 lines
2.4 KiB
Go
68 lines
2.4 KiB
Go
|
// Copyright 2024 The Gitea Authors. All rights reserved.
|
||
|
|
// SPDX-License-Identifier: MIT
|
||
|
|
|
||
|
|
package markdown
|
||
|
|
|
||
|
|
import (
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"github.com/yuin/goldmark/ast"
|
||
|
|
"github.com/yuin/goldmark/text"
|
||
|
|
"golang.org/x/text/cases"
|
||
|
|
"golang.org/x/text/language"
|
||
|
|
)
|
||
|
|
|
||
|
|
func (g *ASTTransformer) transformBlockquote(v *ast.Blockquote, reader text.Reader) (ast.WalkStatus, error) {
|
||
|
|
// We only want attention blockquotes when the AST looks like:
|
||
|
|
// > Text("[") Text("!TYPE") Text("]")
|
||
|
|
|
||
|
|
// grab these nodes and make sure we adhere to the attention blockquote structure
|
||
|
|
firstParagraph := v.FirstChild()
|
||
|
|
g.applyElementDir(firstParagraph)
|
||
|
|
if firstParagraph.ChildCount() < 3 {
|
||
|
|
return ast.WalkContinue, nil
|
||
|
|
}
|
||
|
|
node1, ok1 := firstParagraph.FirstChild().(*ast.Text)
|
||
|
|
node2, ok2 := node1.NextSibling().(*ast.Text)
|
||
|
|
node3, ok3 := node2.NextSibling().(*ast.Text)
|
||
|
|
if !ok1 || !ok2 || !ok3 {
|
||
|
|
return ast.WalkContinue, nil
|
||
|
|
}
|
||
|
|
val1 := string(node1.Segment.Value(reader.Source()))
|
||
|
|
val2 := string(node2.Segment.Value(reader.Source()))
|
||
|
|
val3 := string(node3.Segment.Value(reader.Source()))
|
||
|
|
if val1 != "[" || val3 != "]" || !strings.HasPrefix(val2, "!") {
|
||
|
|
return ast.WalkContinue, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// grab attention type from markdown source
|
||
|
|
attentionType := strings.ToLower(val2[1:])
|
||
|
|
if !g.AttentionTypes.Contains(attentionType) {
|
||
|
|
return ast.WalkContinue, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// color the blockquote
|
||
|
|
v.SetAttributeString("class", []byte("attention-header attention-"+attentionType))
|
||
|
|
|
||
|
|
// create an emphasis to make it bold
|
||
|
|
attentionParagraph := ast.NewParagraph()
|
||
|
|
g.applyElementDir(attentionParagraph)
|
||
|
|
emphasis := ast.NewEmphasis(2)
|
||
|
|
emphasis.SetAttributeString("class", []byte("attention-"+attentionType))
|
||
|
|
|
||
|
|
attentionAstString := ast.NewString([]byte(cases.Title(language.English).String(attentionType)))
|
||
|
|
|
||
|
|
// replace the ![TYPE] with a dedicated paragraph of icon+Type
|
||
|
|
emphasis.AppendChild(emphasis, attentionAstString)
|
||
|
|
attentionParagraph.AppendChild(attentionParagraph, NewAttention(attentionType))
|
||
|
|
attentionParagraph.AppendChild(attentionParagraph, emphasis)
|
||
|
|
firstParagraph.Parent().InsertBefore(firstParagraph.Parent(), firstParagraph, attentionParagraph)
|
||
|
|
firstParagraph.RemoveChild(firstParagraph, node1)
|
||
|
|
firstParagraph.RemoveChild(firstParagraph, node2)
|
||
|
|
firstParagraph.RemoveChild(firstParagraph, node3)
|
||
|
|
if firstParagraph.ChildCount() == 0 {
|
||
|
|
firstParagraph.Parent().RemoveChild(firstParagraph.Parent(), firstParagraph)
|
||
|
|
}
|
||
|
|
return ast.WalkContinue, nil
|
||
|
|
}
|