fix: js string split (#38233)

fix #38229

web_src/js/features/admin/config.ts

@@ -4,6 +4,7 @@ import {registerGlobalInitFunc} from '../../modules/observer.ts';
 import {queryElems} from '../../utils/dom.ts';
 import {errorMessage} from '../../modules/errors.ts';
 import {submitFormFetchAction} from '../common-fetch-action.ts';
+import {cutString} from '../../utils/string.ts';
 
 const {appSubUrl} = window.config;
 
@@ -158,7 +159,7 @@ export class ConfigFormValueMapper {
     const apps: Array<{DisplayName: string, OpenURL: string}> = [];
     const lines = cfgVal.split('\n');
     for (const line of lines) {
-      let [displayName, openUrl] = line.split('=', 2);
+      let [displayName, openUrl] = cutString(line, '=');
       displayName = displayName.trim();
       openUrl = openUrl?.trim() ?? '';
       if (!displayName || !openUrl) continue;

web_src/js/utils/string.test.ts

@@ -0,0 +1,13 @@
+import {cutString} from './string.ts';
+
+test('cutString', () => {
+  let [before, after, ok] = cutString('a = b = c', '=');
+  expect(before).toBe('a ');
+  expect(after).toBe(' b = c');
+  expect(ok).toBe(true);
+
+  [before, after, ok] = cutString(' a ', '=');
+  expect(before).toBe(' a ');
+  expect(after).toBe('');
+  expect(ok).toBe(false);
+});

web_src/js/utils/string.ts

@@ -0,0 +1,5 @@
+export function cutString(s: string, sep: string): [string, string, boolean] {
+  const index = s.indexOf(sep);
+  if (index === -1) return [s, '', false];
+  return [s.substring(0, index), s.substring(index + sep.length), true];
+}