From e68b9d00a6e05b3a941f63ffb696f91e554ac5ec Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 18 Oct 2024 20:33:49 +0200 Subject: Adding upstream version 9.0.3. Signed-off-by: Daniel Baumann --- modules/markup/markdown/goldmark.go | 213 ++++++++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 modules/markup/markdown/goldmark.go (limited to 'modules/markup/markdown/goldmark.go') diff --git a/modules/markup/markdown/goldmark.go b/modules/markup/markdown/goldmark.go new file mode 100644 index 0000000..0290e13 --- /dev/null +++ b/modules/markup/markdown/goldmark.go @@ -0,0 +1,213 @@ +// Copyright 2019 The Gitea Authors. All rights reserved. +// SPDX-License-Identifier: MIT + +package markdown + +import ( + "fmt" + "regexp" + "strings" + + "code.gitea.io/gitea/modules/markup" + "code.gitea.io/gitea/modules/setting" + + "github.com/yuin/goldmark/ast" + east "github.com/yuin/goldmark/extension/ast" + "github.com/yuin/goldmark/parser" + "github.com/yuin/goldmark/renderer" + "github.com/yuin/goldmark/renderer/html" + "github.com/yuin/goldmark/text" + "github.com/yuin/goldmark/util" +) + +var byteMailto = []byte("mailto:") + +// ASTTransformer is a default transformer of the goldmark tree. +type ASTTransformer struct{} + +func (g *ASTTransformer) applyElementDir(n ast.Node) { + if markup.DefaultProcessorHelper.ElementDir != "" { + n.SetAttributeString("dir", []byte(markup.DefaultProcessorHelper.ElementDir)) + } +} + +// Transform transforms the given AST tree. +func (g *ASTTransformer) Transform(node *ast.Document, reader text.Reader, pc parser.Context) { + firstChild := node.FirstChild() + tocMode := "" + ctx := pc.Get(renderContextKey).(*markup.RenderContext) + rc := pc.Get(renderConfigKey).(*RenderConfig) + + tocList := make([]markup.Header, 0, 20) + if rc.yamlNode != nil { + metaNode := rc.toMetaNode() + if metaNode != nil { + node.InsertBefore(node, firstChild, metaNode) + } + tocMode = rc.TOC + } + + _ = ast.Walk(node, func(n ast.Node, entering bool) (ast.WalkStatus, error) { + if !entering { + return ast.WalkContinue, nil + } + + switch v := n.(type) { + case *ast.Heading: + g.transformHeading(ctx, v, reader, &tocList) + case *ast.Paragraph: + g.applyElementDir(v) + case *ast.Image: + g.transformImage(ctx, v) + case *ast.Link: + g.transformLink(ctx, v) + case *ast.List: + g.transformList(ctx, v, rc) + case *ast.Text: + if v.SoftLineBreak() && !v.HardLineBreak() { + if ctx.Metas["mode"] != "document" { + v.SetHardLineBreak(setting.Markdown.EnableHardLineBreakInComments) + } else { + v.SetHardLineBreak(setting.Markdown.EnableHardLineBreakInDocuments) + } + } + case *ast.CodeSpan: + g.transformCodeSpan(ctx, v, reader) + } + return ast.WalkContinue, nil + }) + + showTocInMain := tocMode == "true" /* old behavior, in main view */ || tocMode == "main" + showTocInSidebar := !showTocInMain && tocMode != "false" // not hidden, not main, then show it in sidebar + if len(tocList) > 0 && (showTocInMain || showTocInSidebar) { + if showTocInMain { + tocNode := createTOCNode(tocList, rc.Lang, nil) + node.InsertBefore(node, firstChild, tocNode) + } else { + tocNode := createTOCNode(tocList, rc.Lang, map[string]string{"open": "open"}) + ctx.SidebarTocNode = tocNode + } + } + + if len(rc.Lang) > 0 { + node.SetAttributeString("lang", []byte(rc.Lang)) + } +} + +// NewHTMLRenderer creates a HTMLRenderer to render +// in the gitea form. +func NewHTMLRenderer(opts ...html.Option) renderer.NodeRenderer { + r := &HTMLRenderer{ + Config: html.NewConfig(), + } + for _, opt := range opts { + opt.SetHTMLOption(&r.Config) + } + return r +} + +// HTMLRenderer is a renderer.NodeRenderer implementation that +// renders gitea specific features. +type HTMLRenderer struct { + html.Config +} + +// RegisterFuncs implements renderer.NodeRenderer.RegisterFuncs. +func (r *HTMLRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) { + reg.Register(ast.KindDocument, r.renderDocument) + reg.Register(KindDetails, r.renderDetails) + reg.Register(KindSummary, r.renderSummary) + reg.Register(KindIcon, r.renderIcon) + reg.Register(ast.KindCodeSpan, r.renderCodeSpan) + reg.Register(KindTaskCheckBoxListItem, r.renderTaskCheckBoxListItem) + reg.Register(east.KindTaskCheckBox, r.renderTaskCheckBox) +} + +func (r *HTMLRenderer) renderDocument(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) { + n := node.(*ast.Document) + + if val, has := n.AttributeString("lang"); has { + var err error + if entering { + _, err = w.WriteString("') + } + } else { + _, err = w.WriteString("") + } + + if err != nil { + return ast.WalkStop, err + } + } + + return ast.WalkContinue, nil +} + +func (r *HTMLRenderer) renderDetails(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) { + var err error + if entering { + if _, err = w.WriteString("") + } else { + _, err = w.WriteString("") + } + + if err != nil { + return ast.WalkStop, err + } + + return ast.WalkContinue, nil +} + +func (r *HTMLRenderer) renderSummary(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) { + var err error + if entering { + _, err = w.WriteString("") + } else { + _, err = w.WriteString("") + } + + if err != nil { + return ast.WalkStop, err + } + + return ast.WalkContinue, nil +} + +var validNameRE = regexp.MustCompile("^[a-z ]+$") + +func (r *HTMLRenderer) renderIcon(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) { + if !entering { + return ast.WalkContinue, nil + } + + n := node.(*Icon) + + name := strings.TrimSpace(strings.ToLower(string(n.Name))) + + if len(name) == 0 { + // skip this + return ast.WalkContinue, nil + } + + if !validNameRE.MatchString(name) { + // skip this + return ast.WalkContinue, nil + } + + var err error + _, err = w.WriteString(fmt.Sprintf(``, name)) + if err != nil { + return ast.WalkStop, err + } + + return ast.WalkContinue, nil +} -- cgit v1.2.3