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https://github.com/go-gitea/gitea.git
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633785a5f3
This PR removes (almost) all path tricks, and introduces "renderhelper" package. Now we can clearly see the rendering behaviors for comment/file/wiki, more details are in "renderhelper" tests. Fix #31411 , fix #18592, fix #25632 and maybe more problems. (ps: fix #32608 by the way)
91 lines
2.9 KiB
Go
91 lines
2.9 KiB
Go
// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package markup
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import (
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"html/template"
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"net/url"
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"strconv"
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"strings"
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"code.gitea.io/gitea/modules/httplib"
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"code.gitea.io/gitea/modules/log"
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"golang.org/x/net/html"
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)
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type RenderCodePreviewOptions struct {
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FullURL string
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OwnerName string
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RepoName string
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CommitID string
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FilePath string
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LineStart, LineStop int
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}
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func renderCodeBlock(ctx *RenderContext, node *html.Node) (urlPosStart, urlPosStop int, htm template.HTML, err error) {
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m := globalVars().codePreviewPattern.FindStringSubmatchIndex(node.Data)
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if m == nil {
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return 0, 0, "", nil
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}
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opts := RenderCodePreviewOptions{
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FullURL: node.Data[m[0]:m[1]],
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OwnerName: node.Data[m[2]:m[3]],
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RepoName: node.Data[m[4]:m[5]],
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CommitID: node.Data[m[6]:m[7]],
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FilePath: node.Data[m[8]:m[9]],
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}
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if !httplib.IsCurrentGiteaSiteURL(ctx, opts.FullURL) {
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return 0, 0, "", nil
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}
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u, err := url.Parse(opts.FilePath)
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if err != nil {
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return 0, 0, "", err
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}
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opts.FilePath = strings.TrimPrefix(u.Path, "/")
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lineStartStr, lineStopStr, _ := strings.Cut(node.Data[m[10]:m[11]], "-")
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lineStart, _ := strconv.Atoi(strings.TrimPrefix(lineStartStr, "L"))
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lineStop, _ := strconv.Atoi(strings.TrimPrefix(lineStopStr, "L"))
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opts.LineStart, opts.LineStop = lineStart, lineStop
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h, err := DefaultRenderHelperFuncs.RenderRepoFileCodePreview(ctx, opts)
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return m[0], m[1], h, err
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}
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func codePreviewPatternProcessor(ctx *RenderContext, node *html.Node) {
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nodeStop := node.NextSibling
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for node != nodeStop {
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if node.Type != html.TextNode {
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node = node.NextSibling
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continue
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}
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urlPosStart, urlPosEnd, renderedCodeBlock, err := renderCodeBlock(ctx, node)
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if err != nil || renderedCodeBlock == "" {
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if err != nil {
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log.Error("Unable to render code preview: %v", err)
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}
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node = node.NextSibling
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continue
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}
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next := node.NextSibling
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textBefore := node.Data[:urlPosStart]
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textAfter := node.Data[urlPosEnd:]
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// "textBefore" could be empty if there is only a URL in the text node, then an empty node (p, or li) will be left here.
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// However, the empty node can't be simply removed, because:
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// 1. the following processors will still try to access it (need to double-check undefined behaviors)
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// 2. the new node is inserted as "<p>{TextBefore}<div NewNode/>{TextAfter}</p>" (the parent could also be "li")
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// then it is resolved as: "<p>{TextBefore}</p><div NewNode/><p>{TextAfter}</p>",
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// so unless it could correctly replace the parent "p/li" node, it is very difficult to eliminate the "TextBefore" empty node.
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node.Data = textBefore
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renderedCodeNode := &html.Node{Type: html.RawNode, Data: string(ctx.RenderInternal.ProtectSafeAttrs(renderedCodeBlock))}
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node.Parent.InsertBefore(renderedCodeNode, next)
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if textAfter != "" {
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node.Parent.InsertBefore(&html.Node{Type: html.TextNode, Data: textAfter}, next)
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}
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node = next
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}
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}
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