1 files changed, 163 insertions, 0 deletions
diff --git a/modules/markup/markdown/renderconfig.go b/modules/markup/markdown/renderconfig.go
new file mode 100644
index 0000000000..bef67e9e59
--- /dev/null
+++ b/modules/markup/markdown/renderconfig.go
@@ -0,0 +1,163 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package markdown
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/yuin/goldmark/ast"
+	east "github.com/yuin/goldmark/extension/ast"
+	"gopkg.in/yaml.v2"
+)
+
+// RenderConfig represents rendering configuration for this file
+type RenderConfig struct {
+	Meta string
+	Icon string
+	TOC  bool
+	Lang string
+}
+
+// ToRenderConfig converts a yaml.MapSlice to a RenderConfig
+func (rc *RenderConfig) ToRenderConfig(meta yaml.MapSlice) {
+	if meta == nil {
+		return
+	}
+	found := false
+	var giteaMetaControl yaml.MapItem
+	for _, item := range meta {
+		strKey, ok := item.Key.(string)
+		if !ok {
+			continue
+		}
+		strKey = strings.TrimSpace(strings.ToLower(strKey))
+		switch strKey {
+		case "gitea":
+			giteaMetaControl = item
+			found = true
+		case "include_toc":
+			val, ok := item.Value.(bool)
+			if !ok {
+				continue
+			}
+			rc.TOC = val
+		case "lang":
+			val, ok := item.Value.(string)
+			if !ok {
+				continue
+			}
+			val = strings.TrimSpace(val)
+			if len(val) == 0 {
+				continue
+			}
+			rc.Lang = val
+		}
+	}
+
+	if found {
+		switch v := giteaMetaControl.Value.(type) {
+		case string:
+			switch v {
+			case "none":
+				rc.Meta = "none"
+			case "table":
+				rc.Meta = "table"
+			default: // "details"
+				rc.Meta = "details"
+			}
+		case yaml.MapSlice:
+			for _, item := range v {
+				strKey, ok := item.Key.(string)
+				if !ok {
+					continue
+				}
+				strKey = strings.TrimSpace(strings.ToLower(strKey))
+				switch strKey {
+				case "meta":
+					val, ok := item.Value.(string)
+					if !ok {
+						continue
+					}
+					switch strings.TrimSpace(strings.ToLower(val)) {
+					case "none":
+						rc.Meta = "none"
+					case "table":
+						rc.Meta = "table"
+					default: // "details"
+						rc.Meta = "details"
+					}
+				case "details_icon":
+					val, ok := item.Value.(string)
+					if !ok {
+						continue
+					}
+					rc.Icon = strings.TrimSpace(strings.ToLower(val))
+				case "include_toc":
+					val, ok := item.Value.(bool)
+					if !ok {
+						continue
+					}
+					rc.TOC = val
+				case "lang":
+					val, ok := item.Value.(string)
+					if !ok {
+						continue
+					}
+					val = strings.TrimSpace(val)
+					if len(val) == 0 {
+						continue
+					}
+					rc.Lang = val
+				}
+			}
+		}
+	}
+}
+
+func (rc *RenderConfig) toMetaNode(meta yaml.MapSlice) ast.Node {
+	switch rc.Meta {
+	case "table":
+		return metaToTable(meta)
+	case "details":
+		return metaToDetails(meta, rc.Icon)
+	default:
+		return nil
+	}
+}
+
+func metaToTable(meta yaml.MapSlice) ast.Node {
+	table := east.NewTable()
+	alignments := []east.Alignment{}
+	for range meta {
+		alignments = append(alignments, east.AlignNone)
+	}
+	row := east.NewTableRow(alignments)
+	for _, item := range meta {
+		cell := east.NewTableCell()
+		cell.AppendChild(cell, ast.NewString([]byte(fmt.Sprintf("%v", item.Key))))
+		row.AppendChild(row, cell)
+	}
+	table.AppendChild(table, east.NewTableHeader(row))
+
+	row = east.NewTableRow(alignments)
+	for _, item := range meta {
+		cell := east.NewTableCell()
+		cell.AppendChild(cell, ast.NewString([]byte(fmt.Sprintf("%v", item.Value))))
+		row.AppendChild(row, cell)
+	}
+	table.AppendChild(table, row)
+	return table
+}
+
+func metaToDetails(meta yaml.MapSlice, icon string) ast.Node {
+	details := NewDetails()
+	summary := NewSummary()
+	summary.AppendChild(summary, NewIcon(icon))
+	details.AppendChild(details, summary)
+	details.AppendChild(details, metaToTable(meta))
+
+	return details
+}