Truncate diff

internal/git/output_parser.go

@@ -58,6 +58,7 @@ func parseLog(out io.Reader) []*Commit {
 	var currentCommit *Commit
 	var currentFile *File
 	var isContent bool
+	var bytesRead = 0
 
 	for scanner.Scan() {
 		// new commit found
@@ -103,6 +104,7 @@ func parseLog(out io.Reader) []*Commit {
 
 				// create a new file
 				isContent = false
+				bytesRead = 0
 				currentFile = &File{}
 				filenameRegex := regexp.MustCompile(`^diff --git a/(.+) b/(.+)$`)
 				matches := filenameRegex.FindStringSubmatch(string(line))
@@ -131,6 +133,13 @@ func parseLog(out io.Reader) []*Commit {
 
 			if isContent {
 				currentFile.Content += string(line) + "\n"
+
+				bytesRead += len(line)
+				if bytesRead > 2<<18 {
+					currentFile.Truncated = true
+					currentFile.Content = ""
+					isContent = false
+				}
 			}
 
 			scanner.Scan()

templates/pages/revisions.html

@@ -39,7 +39,9 @@
                             </p>
                         </div>
                         <div class="code overflow-auto">
-                            {{ if and (eq $file.Content "") (ne $file.OldFilename "") }}
+                            {{ if $file.Truncated }}
+                                <p class="m-2 ml-4 text-xs">Diff truncated because its too large to be shown</p>
+                            {{ else if and (eq $file.Content "") (ne $file.OldFilename "") }}
                                 <p class="m-2 ml-4 text-xs">File renamed without changes</p>
                             {{ else if eq $file.Content "" }}
                                 <p class="m-2 ml-4 text-xs">Empty file</p>