first-commit

modules/markup/markdown/convertyaml.go

@@ -0,0 +1,98 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package markdown
+
+import (
+	"strings"
+
+	"code.gitea.io/gitea/modules/htmlutil"
+	"code.gitea.io/gitea/modules/svg"
+
+	"github.com/yuin/goldmark/ast"
+	east "github.com/yuin/goldmark/extension/ast"
+	"gopkg.in/yaml.v3"
+)
+
+func nodeToTable(meta *yaml.Node) ast.Node {
+	for meta != nil && meta.Kind == yaml.DocumentNode {
+		meta = meta.Content[0]
+	}
+	if meta == nil {
+		return nil
+	}
+	switch meta.Kind {
+	case yaml.MappingNode:
+		return mappingNodeToTable(meta)
+	case yaml.SequenceNode:
+		return sequenceNodeToTable(meta)
+	default:
+		return ast.NewString([]byte(meta.Value))
+	}
+}
+
+func mappingNodeToTable(meta *yaml.Node) ast.Node {
+	table := east.NewTable()
+	alignments := make([]east.Alignment, 0, len(meta.Content)/2)
+	for i := 0; i < len(meta.Content); i += 2 {
+		alignments = append(alignments, east.AlignNone)
+	}
+
+	headerRow := east.NewTableRow(alignments)
+	valueRow := east.NewTableRow(alignments)
+	for i := 0; i < len(meta.Content); i += 2 {
+		cell := east.NewTableCell()
+
+		cell.AppendChild(cell, nodeToTable(meta.Content[i]))
+		headerRow.AppendChild(headerRow, cell)
+
+		if i+1 < len(meta.Content) {
+			cell = east.NewTableCell()
+			cell.AppendChild(cell, nodeToTable(meta.Content[i+1]))
+			valueRow.AppendChild(valueRow, cell)
+		}
+	}
+
+	table.AppendChild(table, east.NewTableHeader(headerRow))
+	table.AppendChild(table, valueRow)
+	return table
+}
+
+func sequenceNodeToTable(meta *yaml.Node) ast.Node {
+	table := east.NewTable()
+	alignments := []east.Alignment{east.AlignNone}
+	for _, item := range meta.Content {
+		row := east.NewTableRow(alignments)
+		cell := east.NewTableCell()
+		cell.AppendChild(cell, nodeToTable(item))
+		row.AppendChild(row, cell)
+		table.AppendChild(table, row)
+	}
+	return table
+}
+
+func nodeToDetails(g *ASTTransformer, meta *yaml.Node) ast.Node {
+	for meta != nil && meta.Kind == yaml.DocumentNode {
+		meta = meta.Content[0]
+	}
+	if meta == nil {
+		return nil
+	}
+	if meta.Kind != yaml.MappingNode {
+		return nil
+	}
+	var keys []string
+	for i := 0; i < len(meta.Content); i += 2 {
+		if meta.Content[i].Kind == yaml.ScalarNode {
+			keys = append(keys, meta.Content[i].Value)
+		}
+	}
+	details := NewDetails()
+	details.SetAttributeString(g.renderInternal.SafeAttr("class"), g.renderInternal.SafeValue("frontmatter-content"))
+	summary := NewSummary()
+	summaryInnerHTML := htmlutil.HTMLFormat("%s %s", svg.RenderHTML("octicon-table", 12), strings.Join(keys, ", "))
+	summary.AppendChild(summary, NewRawHTML(summaryInnerHTML))
+	details.AppendChild(details, summary)
+	details.AppendChild(details, nodeToTable(meta))
+	return details
+}