Unified and context diff syntax highlighting (#26)

2024-11-27 00:29:27 +01:00
parent 60c15956b8
commit 8936a95ef9
5 changed files with 105 additions and 50 deletions
--- a/src/util/languages/diff.ts
+++ b/src/util/languages/diff.ts
@@ -0,0 +1,30 @@
+import { languages } from 'monaco-editor';
+
+export const diffLanguage: languages.IMonarchLanguage = {
+  defaultToken: '',
+  tokenizer: {
+    root: [
+      // Meta lines (e.g., @@ -1,2 +3,4 @@)
+      [/@@@ +-\d+,\d+ +\+\d+,\d+ +@@@/, 'meta'],
+      [/^\*\*\* +\d+,\d+ +\*\*\*\*$/, 'meta'],
+      [/^--- +\d+,\d+ +----$/, 'meta'],
+
+      // Comments
+      [/Index: .*/, 'comment'],
+      [/^index.*/, 'comment'],
+      [/={3,}/, 'comment'],
+      [/^-{3}.*/, 'comment'],
+      [/^\*{3} .*/, 'comment'],
+      [/^\+{3}.*/, 'comment'],
+      [/^diff --git.*/, 'comment'],
+      [/^\*{15}$/, 'comment'],
+
+      // Additions
+      [/^\+.*/, 'addition'],
+      [/^!.*/, 'addition'],
+
+      // Deletions
+      [/^-.*/, 'deletion'],
+    ],
+  },
+};