urls.js: fix browsing directories with ! in patch

Author: hyperblast

docs/change-log.md

@@ -7,6 +7,7 @@
 - Fixed "Add URL" not working
 - Total playlist time status line is removed (foobar2000 only)
 - Volume slider now uses linear scale instead of dB (foobar2000 only)
+- Fixed browsing directories with `!` in path
 
 ### Changes in v0.3 (released 2018-09-20):
 - Added button that locates currently played track

js/webui/src/index.js

@@ -58,8 +58,11 @@ router.on({
 
     '/files/!*': () => {
         navigationModel.setView(View.fileBrowser);
+
         const path = getPathFromUrl(router.lastRouteResolved().url);
-        fileBrowserModel.browse(path);
+
+        if (path)
+            fileBrowserModel.browse(path);
     },
 
     '/settings': () => {

js/webui/src/urls.js

@@ -27,5 +27,10 @@ export default urls;
 
 export function getPathFromUrl(url)
 {
-    return decodeURIComponent(url.split('!', 2)[1]);
+    const index = url.indexOf('!');
+
+    if (index < 0)
+        return null;
+
+    return decodeURIComponent(url.substring(index + 1));
 }