support chorus parsing

src/plugins/synced-lyrics/parsers/lrc.test.ts

@@ -0,0 +1,86 @@
+import { test, expect } from '@playwright/test';
+
+import { LRC } from './lrc';
+
+test('empty string', () => {
+  const lrc = LRC.parse('');
+  expect(lrc).toStrictEqual({ lines: [], tags: [] });
+});
+
+test('chorus', () => {
+  const lrc = LRC.parse(`\
+[00:12.00]Line 1 lyrics
+[00:17.20]Line 2 lyrics
+[00:21.10][00:45.10]Repeating lyrics (e.g. chorus)
+[mm:ss.xx]Last lyrics line\
+`);
+
+  expect(lrc).toStrictEqual({
+    lines: [
+      { duration: 12000, text: '', time: '0:0:0', timeInMs: 0 },
+      {
+        duration: 5020,
+        text: 'Line 1 lyrics',
+        time: '00:12:00',
+        timeInMs: 12000,
+      },
+      {
+        duration: 3990,
+        text: 'Line 2 lyrics',
+        time: '00:17:20',
+        timeInMs: 17020,
+      },
+      {
+        duration: 24000,
+        text: 'Repeating lyrics (e.g. chorus)',
+        time: '00:21:10',
+        timeInMs: 21010,
+      },
+      {
+        duration: Infinity,
+        text: 'Repeating lyrics (e.g. chorus)',
+        time: '00:45:10',
+        timeInMs: 45010,
+      },
+    ],
+    tags: [],
+  });
+});
+
+test('attributes', () => {
+  const lrc = LRC.parse(
+    `[ar:Chubby Checker oppure  Beatles, The]
+[al:Hits Of The 60's - Vol. 2 – Oldies]
+[ti:Let's Twist Again]
+[au:Written by Kal Mann / Dave Appell, 1961]
+[length: 2:23]
+
+[00:12.00]Naku Penda Piya-Naku Taka Piya-Mpenziwe
+[00:15.30]Some more lyrics ...`,
+  );
+
+  expect(lrc).toStrictEqual({
+    lines: [
+      { duration: 12000, text: '', time: '0:0:0', timeInMs: 0 },
+      {
+        duration: 3030,
+        text: 'Naku Penda Piya-Naku Taka Piya-Mpenziwe',
+        time: '00:12:00',
+        timeInMs: 12000,
+      },
+      {
+        duration: Infinity,
+        text: 'Some more lyrics ...',
+        time: '00:15:30',
+        timeInMs: 15030,
+      },
+    ],
+    tags: [
+      { tag: 'ar', value: 'Chubby Checker oppure  Beatles, The' },
+      { tag: 'al', value: "Hits Of The 60's - Vol. 2 – Oldies" },
+      { tag: 'ti', value: "Let's Twist Again" },
+      { tag: 'au', value: 'Written by Kal Mann / Dave Appell, 1961' },
+      { tag: 'length', value: '2:23' },
+    ],
+  });
+});