Exclude files from diff.

Author: KN4CK3R

options/locale/locale_en-US.ini

@@ -1956,6 +1956,7 @@ diff.stats_desc = <strong> %d changed files</strong> with <strong>%d additions</
 diff.stats_desc_file = %d changes: %d additions and %d deletions
 diff.bin = BIN
 diff.bin_not_shown = Binary file not shown.
+diff.generated_not_shown = Generated file not shown.
 diff.view_file = View File
 diff.file_before = Before
 diff.file_after = After

services/gitdiff/gitdiff.go

@@ -590,6 +590,7 @@ type DiffFile struct {
 	IsIncomplete            bool
 	IsIncompleteLineTooLong bool
 	IsProtected             bool
+	IsGenerated             bool
 }
 
 // GetType returns type of diff file.
@@ -1248,13 +1249,31 @@ func GetDiffRangeWithWhitespaceBehavior(repoPath, beforeCommitID, afterCommitID
 	if err != nil {
 		return nil, fmt.Errorf("ParsePatch: %v", err)
 	}
+
+	var filenames []string
 	for _, diffFile := range diff.Files {
+		filenames = append(filenames, diffFile.Name)
+
 		tailSection := diffFile.GetTailSection(gitRepo, beforeCommitID, afterCommitID)
 		if tailSection != nil {
 			diffFile.Sections = append(diffFile.Sections, tailSection)
 		}
 	}
 
+	filename2attribute2info, err := gitRepo.CheckAttribute(git.CheckAttributeOpts{
+		Attributes: []string{"linguist-generated"},
+		Filenames:  filenames,
+	})
+	if err != nil {
+		log.Error("CheckAttribute: %v", err)
+	}
+	for _, diffFile := range diff.Files {
+		attr := filename2attribute2info[diffFile.Name]["linguist-generated"]
+		if attr == "set" || attr == "true" {
+			diffFile.IsGenerated = true
+		}
+	}
+
 	if err = cmd.Wait(); err != nil {
 		return nil, fmt.Errorf("Wait: %v", err)
 	}

templates/repo/diff/box.tmpl

@@ -48,7 +48,8 @@
 			{{$blobHead := call $.GetBlobByPathForCommit $.HeadCommit $file.Name}}
 			{{$isImage := or (call $.IsBlobAnImage $blobBase) (call $.IsBlobAnImage $blobHead)}}
 			{{$isCsv := (call $.IsCsvFile $file)}}
-			{{$showFileViewToggle := or $isImage (and (not $file.IsIncomplete) $isCsv)}}
+			{{$isRenderable := or $isImage (and (not $file.IsIncomplete) $isCsv)}}
+			{{$showFileViewToggle := or $isRenderable $file.IsGenerated}}
 			<div class="diff-file-box diff-box file-content {{TabSizeClass $.Editorconfig $file.Name}} mt-3" id="diff-{{.Index}}">
 				<h4 class="diff-file-header sticky-2nd-row ui top attached normal header df ac sb">
 					<div class="df ac">
@@ -111,13 +112,19 @@
 					</div>
 					{{if $showFileViewToggle}}
 						<div id="diff-rendered-{{$i}}" class="file-body file-code {{if $.IsSplitStyle}} code-diff-split{{else}} code-diff-unified{{end}}">
+							{{if $isRenderable}}
 							<table class="chroma w-100">
 								{{if $isImage}}
 									{{template "repo/diff/image_diff" dict "file" . "root" $ "blobBase" $blobBase "blobHead" $blobHead}}
 								{{else}}
 									{{template "repo/diff/csv_diff" dict "file" . "root" $}}
 								{{end}}
 							</table>
+							{{else}}
+							<div class="diff-file-body binary" style="padding: 5px 10px;">
+								{{$.i18n.Tr "repo.diff.generated_not_shown"}}
+							</div>
+							{{end}}
 						</div>
 					{{end}}
 				</div>