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zeekayandHanzo Dev
aa87442fdd
Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
91 lines
2.9 KiB
Go
91 lines
2.9 KiB
Go
// Copyright 2026 Hanzo AI, Inc. 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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"github.com/hanzoai/git/modules/httplib"
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"github.com/hanzoai/git/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.IsCurrentGitSiteURL(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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