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Fix broken code editor diff preview (#23307)

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Close #23265, the code editor diff preview has been broken for long
time.

* Fix the regression for `data-line-num`
    * `.code-diff` is necessary to show the line number
* Fix the regression for #12434
* The diff:
[12434](https://github.com/go-gitea/gitea/pull/12434/files?diff=unified&w=1)
    * It hides the Type(4) (aka HunkHeader)  for unexpected cases.


Diff with ignoring whitespaces:
https://github.com/go-gitea/gitea/pull/23307/files?diff=unified&w=1

Before: see the issue #23265

After:

![image](https://user-images.githubusercontent.com/2114189/222942810-286dc9af-0b39-4e9d-8585-8c299b881241.png)
This commit is contained in:
wxiaoguang 2023-03-06 09:37:58 +08:00 committed by GitHub
parent ce43208c6a
commit 6886706f5a
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 35 additions and 32 deletions
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2
services/gitdiff/gitdiff.go
View file

@ -474,7 +474,7 @@ func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader, ski
sb := strings.Builder{} sb := strings.Builder{}
// OK let's set a reasonable buffer size. // OK let's set a reasonable buffer size.
// This should be let's say at least the size of maxLineCharacters or 4096 whichever is larger. // This should be at least the size of maxLineCharacters or 4096 whichever is larger.
readerSize := maxLineCharacters readerSize := maxLineCharacters
if readerSize < 4096 { if readerSize < 4096 {
readerSize = 4096 readerSize = 4096

7
templates/repo/diff/section_unified.tmpl
View file

@ -1,9 +1,9 @@
{{$file := .file}} {{$file := .file}}
{{range $j, $section := $file.Sections}} {{range $j, $section := $file.Sections}}
{{range $k, $line := $section.Lines}} {{range $k, $line := $section.Lines}}
{{if or $.root.AfterCommitID (ne .GetType 4)}}
<tr class="{{DiffLineTypeToStr .GetType}}-code nl-{{$k}} ol-{{$k}}" data-line-type="{{DiffLineTypeToStr .GetType}}"> <tr class="{{DiffLineTypeToStr .GetType}}-code nl-{{$k}} ol-{{$k}}" data-line-type="{{DiffLineTypeToStr .GetType}}">
{{if eq .GetType 4}} {{if eq .GetType 4}}
{{if $.root.AfterCommitID}}
<td colspan="2" class="lines-num"> <td colspan="2" class="lines-num">
{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5)}} {{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5)}}
<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}"> <a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}">
@ -21,6 +21,10 @@
</a> </a>
{{end}} {{end}}
</td> </td>
{{else}}
{{/* for code file preview page or comment diffs on pull comment pages, do not show the expansion arrows */}}
<td colspan="2" class="lines-num"></td>
{{end}}
{{else}} {{else}}
<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{$file.NameHash}}L{{$line.LeftIdx}}{{end}}"></span></td> <td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{$file.NameHash}}L{{$line.LeftIdx}}{{end}}"></span></td>
<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{$file.NameHash}}R{{$line.RightIdx}}{{end}}"></span></td> <td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{$file.NameHash}}R{{$line.RightIdx}}{{end}}"></span></td>
@ -52,5 +56,4 @@
</tr> </tr>
{{end}} {{end}}
{{end}} {{end}}
{{end}}
{{end}} {{end}}

2
templates/repo/editor/diff_preview.tmpl
View file

@ -1,6 +1,6 @@
<div class="diff-file-box"> <div class="diff-file-box">
<div class="ui attached table segment"> <div class="ui attached table segment">
<div class="file-body file-code code-view code-diff-unified unicode-escaped"> <div class="file-body file-code code-diff code-diff-unified unicode-escaped">
<table> <table>
<tbody> <tbody>
{{template "repo/diff/section_unified" dict "file" .File "root" $}} {{template "repo/diff/section_unified" dict "file" .File "root" $}}