Calculate filename hash only once (#19654)

* Calculate hash only once.

* remove unused Sha1 template helper function, use ctx.Data["FileNameHash"]

* fix unit tests

modules/templates/helper.go

@@ -146,7 +146,6 @@ func NewFuncMap() []template.FuncMap {
 		"EllipsisString":                 base.EllipsisString,
 		"DiffTypeToStr":                  DiffTypeToStr,
 		"DiffLineTypeToStr":              DiffLineTypeToStr,
-		"Sha1":                           Sha1,
 		"ShortSha":                       base.ShortSha,
 		"MD5":                            base.EncodeMD5,
 		"ActionContent2Commits":          ActionContent2Commits,
@@ -649,11 +648,6 @@ func DotEscape(raw string) string {
 	return strings.ReplaceAll(raw, ".", "\u200d.\u200d")
 }
 
-// Sha1 returns sha1 sum of string
-func Sha1(str string) string {
-	return base.EncodeSha1(str)
-}
-
 // RenderCommitMessage renders commit message with XSS-safe and special links.
 func RenderCommitMessage(ctx context.Context, msg, urlPrefix string, metas map[string]string) template.HTML {
 	return RenderCommitMessageLink(ctx, msg, urlPrefix, "", metas)

routers/web/repo/compare.go

@@ -874,7 +874,7 @@ func ExcerptBlob(ctx *context.Context) {
 		}
 	}
 	ctx.Data["section"] = section
-	ctx.Data["fileName"] = filePath
+	ctx.Data["FileNameHash"] = base.EncodeSha1(filePath)
 	ctx.Data["AfterCommitID"] = commitID
 	ctx.Data["Anchor"] = anchor
 	ctx.HTML(http.StatusOK, tplBlobExcerpt)

services/gitdiff/gitdiff.go

@@ -25,6 +25,7 @@ import (
 	pull_model "code.gitea.io/gitea/models/pull"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/analyze"
+	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/charset"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/highlight"
@@ -604,6 +605,7 @@ func (diffSection *DiffSection) GetComputedInlineDiffFor(diffLine *DiffLine) Dif
 // DiffFile represents a file diff.
 type DiffFile struct {
 	Name                      string
+	NameHash                  string
 	OldName                   string
 	Index                     int
 	Addition, Deletion        int
@@ -952,7 +954,6 @@ parsingLoop:
 				break curFileLoop
 			}
 		}
-
 	}
 
 	// TODO: There are numerous issues with this:
@@ -964,6 +965,8 @@ parsingLoop:
 	diffLineTypeBuffers[DiffLineAdd] = new(bytes.Buffer)
 	diffLineTypeBuffers[DiffLineDel] = new(bytes.Buffer)
 	for _, f := range diff.Files {
+		f.NameHash = base.EncodeSha1(f.Name)
+
 		for _, buffer := range diffLineTypeBuffers {
 			buffer.Reset()
 		}

services/repository/files/diff_test.go

@@ -37,6 +37,7 @@ func TestGetDiffPreview(t *testing.T) {
 			{
 				Name:        "README.md",
 				OldName:     "README.md",
+				NameHash:    "8ec9a00bfd09b3190ac6b22251dbb1aa95a0579d",
 				Index:       1,
 				Addition:    2,
 				Deletion:    1,
@@ -123,7 +124,7 @@ func TestGetDiffPreview(t *testing.T) {
 		assert.NoError(t, err)
 		bs, err := json.Marshal(diff)
 		assert.NoError(t, err)
-		assert.EqualValues(t, expectedBs, bs)
+		assert.EqualValues(t, string(expectedBs), string(bs))
 	})
 
 	t.Run("empty branch, same results", func(t *testing.T) {

templates/repo/diff/blob_excerpt.tmpl

@@ -22,13 +22,13 @@
 			<td colspan="5" class="lines-code lines-code-old ">{{$inlineDiff := $.section.GetComputedInlineDiffFor $line}}<code {{if $inlineDiff.EscapeStatus.Escaped}}class="code-inner has-escaped" title="{{$.i18n.Tr "repo.line_unicode"}}"{{else}}class="code-inner"{{end}}>{{$inlineDiff.Content}}</code></td>
 		{{else}}
 			{{$inlineDiff := $.section.GetComputedInlineDiffFor $line}}
-			<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{Sha1 $.fileName}}L{{$line.LeftIdx}}{{end}}"></span></td>
+			<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{$.FileNameHash}}L{{$line.LeftIdx}}{{end}}"></span></td>
 			<td class="blob-excerpt lines-escape lines-escape-old">{{if and $line.LeftIdx $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}</td>
 			<td class="blob-excerpt lines-type-marker lines-type-marker-old">{{if $line.LeftIdx}}<span class="mono" data-type-marker=""></span>{{end}}</td>
 			<td class="blob-excerpt lines-code lines-code-old halfwidth">{{/*
 				*/}}<code {{if and $line.LeftIdx $inlineDiff.EscapeStatus.Escaped}}class="code-inner has-escaped" title="{{$.i18n.Tr "repo.line_unicode"}}"{{else}}class="code-inner"{{end}}>{{if $line.LeftIdx}}{{$inlineDiff.Content}}{{end}}</code>{{/*
 			*/}}</td>
-			<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{Sha1 $.fileName}}R{{$line.RightIdx}}{{end}}"></span></td>
+			<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{$.FileNameHash}}R{{$line.RightIdx}}{{end}}"></span></td>
 			<td class="blob-excerpt lines-escape lines-escape-new">{{if and $line.RightIdx $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}</td>
 			<td class="blob-excerpt lines-type-marker lines-type-marker-new">{{if $line.RightIdx}}<span class="mono" data-type-marker=""></span>{{end}}</td>
 			<td class="blob-excerpt lines-code lines-code-new halfwidth">{{/*
@@ -59,8 +59,8 @@
 				{{end}}
 			</td>
 		{{else}}
-			<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{Sha1 $.fileName}}L{{$line.LeftIdx}}{{end}}"></span></td>
+			<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{$.FileNameHash}}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-{{Sha1 $.fileName}}R{{$line.RightIdx}}{{end}}"></span></td>
+			<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{$.FileNameHash}}R{{$line.RightIdx}}{{end}}"></span></td>
 		{{end}}
 		{{$inlineDiff := $.section.GetComputedInlineDiffFor $line}}
 		<td class="blob-excerpt lines-escape">{{if $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}</td>

templates/repo/diff/box.tmpl

@@ -45,7 +45,7 @@
 					</div>
 					<!-- todo finish all file status, now modify, add, delete and rename -->
 					<span class="status {{DiffTypeToStr .GetType}} tooltip" data-content="{{DiffTypeToStr .GetType}}" data-position="right center">&nbsp;</span>
-					<a class="file mono" href="#diff-{{Sha1 .Name}}">{{.Name}}</a>
+					<a class="file mono" href="#diff-{{.NameHash}}">{{.Name}}</a>
 				</li>
 			{{end}}
 			{{if .Diff.IsIncomplete}}
@@ -63,8 +63,7 @@
 				{{$isImage := or (call $.IsBlobAnImage $blobBase) (call $.IsBlobAnImage $blobHead)}}
 				{{$isCsv := (call $.IsCsvFile $file)}}
 				{{$showFileViewToggle := or $isImage (and (not $file.IsIncomplete) $isCsv)}}
-				{{$nameHash := Sha1 $file.Name}}
+				<div class="diff-file-box diff-box file-content {{TabSizeClass $.Editorconfig $file.Name}} mt-3" id="diff-{{$file.NameHash}}" data-old-filename="{{$file.OldName}}" data-new-filename="{{$file.Name}}" {{if $file.ShouldBeHidden}}data-folded="true"{{end}}>
-				<div class="diff-file-box diff-box file-content {{TabSizeClass $.Editorconfig $file.Name}} mt-3" id="diff-{{$nameHash}}" data-old-filename="{{$file.OldName}}" data-new-filename="{{$file.Name}}" {{if $file.ShouldBeHidden}}data-folded="true"{{end}}>
 					<h4 class="diff-file-header sticky-2nd-row ui top attached normal header df ac sb">
 						<div class="df ac">
 							<a role="button" class="fold-file muted mr-2">
@@ -83,7 +82,7 @@
 									{{template "repo/diff/stats" dict "file" . "root" $}}
 								{{end}}
 							</div>
-							<span class="file mono"><a class="muted" href="#diff-{{$nameHash}}">{{if $file.IsRenamed}}{{$file.OldName}} &rarr; {{end}}{{$file.Name}}</a>{{if .IsLFSFile}} ({{$.i18n.Tr "repo.stored_lfs"}}){{end}}</span>
+							<span class="file mono"><a class="muted" href="#diff-{{$file.NameHash}}">{{if $file.IsRenamed}}{{$file.OldName}} &rarr; {{end}}{{$file.Name}}</a>{{if .IsLFSFile}} ({{$.i18n.Tr "repo.stored_lfs"}}){{end}}</span>
 							{{if $file.IsGenerated}}
 								<span class="ui label ml-3">{{$.i18n.Tr "repo.diff.generated"}}</span>
 							{{end}}

templates/repo/diff/section_split.tmpl

@@ -7,17 +7,17 @@
 				{{if eq .GetType 4}}
 					<td class="lines-num lines-num-old">
 						{{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=split&direction=down&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
+							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}">
 								{{svg "octicon-fold-down"}}
 							</a>
 						{{end}}
 						{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4) }}
-							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
+							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}">
 								{{svg "octicon-fold-up"}}
 							</a>
 						{{end}}
 						{{if eq $line.GetExpandDirection 2}}
-							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
+							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}">
 								{{svg "octicon-fold"}}
 							</a>
 						{{end}}
@@ -28,7 +28,7 @@
 					{{$match := index $section.Lines $line.Match}}
 					{{- $leftDiff := ""}}{{if $line.LeftIdx}}{{$leftDiff = $section.GetComputedInlineDiffFor $line}}{{end}}
 					{{- $rightDiff := ""}}{{if $match.RightIdx}}{{$rightDiff = $section.GetComputedInlineDiffFor $match}}{{end}}
-					<td class="lines-num lines-num-old del-code" data-line-num="{{$line.LeftIdx}}"><span rel="diff-{{Sha1 $file.Name}}L{{$line.LeftIdx}}"></span></td>
+					<td class="lines-num lines-num-old del-code" data-line-num="{{$line.LeftIdx}}"><span rel="diff-{{$file.NameHash}}L{{$line.LeftIdx}}"></span></td>
 					<td class="lines-escape del-code lines-escape-old">{{if $line.LeftIdx}}{{if $leftDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}{{end}}</td>
 					<td class="lines-type-marker lines-type-marker-old del-code"><span class="mono" data-type-marker="{{$line.GetLineTypeMarker}}"></span></td>
 					<td class="lines-code lines-code-old halfwidth del-code">{{/*
@@ -43,7 +43,7 @@
 						*/}}<code class="code-inner"></code>{{/*
 						*/}}{{end}}{{/*
 					*/}}</td>
-					<td class="lines-num lines-num-new add-code" data-line-num="{{if $match.RightIdx}}{{$match.RightIdx}}{{end}}"><span rel="{{if $match.RightIdx}}diff-{{Sha1 $file.Name}}R{{$match.RightIdx}}{{end}}"></span></td>
+					<td class="lines-num lines-num-new add-code" data-line-num="{{if $match.RightIdx}}{{$match.RightIdx}}{{end}}"><span rel="{{if $match.RightIdx}}diff-{{$file.NameHash}}R{{$match.RightIdx}}{{end}}"></span></td>
 					<td class="lines-escape add-code lines-escape-new">{{if $match.RightIdx}}{{if $rightDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}{{end}}</td>
 					<td class="lines-type-marker lines-type-marker-new add-code">{{if $match.RightIdx}}<span class="mono" data-type-marker="{{$match.GetLineTypeMarker}}"></span>{{end}}</td>
 					<td class="lines-code lines-code-new halfwidth add-code">{{/*
@@ -60,7 +60,7 @@
 					*/}}</td>
 				{{else}}
 					{{$inlineDiff := $section.GetComputedInlineDiffFor $line}}
-					<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{Sha1 $file.Name}}L{{$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-escape lines-escape-old">{{if $line.LeftIdx}}{{if $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}{{end}}</td>
 					<td class="lines-type-marker lines-type-marker-old">{{if $line.LeftIdx}}<span class="mono" data-type-marker="{{$line.GetLineTypeMarker}}"></span>{{end}}</td>
 					<td class="lines-code lines-code-old halfwidth">{{/*
@@ -75,7 +75,7 @@
 						*/}}<code class="code-inner"></code>{{/*
 						*/}}{{end}}{{/*
 					*/}}</td>
-					<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{Sha1 $file.Name}}R{{$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>
 					<td class="lines-escape lines-escape-new">{{if $line.RightIdx}}{{if $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}{{end}}</td>
 					<td class="lines-type-marker lines-type-marker-new">{{if $line.RightIdx}}<span class="mono" data-type-marker="{{$line.GetLineTypeMarker}}"></span>{{end}}</td>
 					<td class="lines-code lines-code-new halfwidth">{{/*

templates/repo/diff/section_unified.tmpl

@@ -6,24 +6,24 @@
 				{{if eq .GetType 4}}
 					<td colspan="2" class="lines-num">
 						{{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-{{Sha1 $file.Name}}K{{$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}}">
 								{{svg "octicon-fold-down"}}
 							</a>
 						{{end}}
 						{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4) }}
-							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$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=up&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}">
 								{{svg "octicon-fold-up"}}
 							</a>
 						{{end}}
 						{{if eq $line.GetExpandDirection 2}}
-							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$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=&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{$file.NameHash}}K{{$line.SectionInfo.RightIdx}}">
 								{{svg "octicon-fold"}}
 							</a>
 						{{end}}
 					</td>
 				{{else}}
-					<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{Sha1 $file.Name}}L{{$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-{{Sha1 $file.Name}}R{{$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{{$line.RightIdx}}{{end}}"></span></td>
 				{{end}}
 				{{$inlineDiff := $section.GetComputedInlineDiffFor $line -}}
 				<td class="lines-escape">{{if $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{$.i18n.Tr "repo.line_unicode"}}"></a>{{end}}</td>