Fix virtual path standardization

Author: TwitchBronBron

src/util.spec.ts

@@ -1708,6 +1708,31 @@ describe('util', () => {
             });
 
         });
+
+        describe('virtual:/ paths', () => {
+            it('preserves virtual:/ prefix on windows', () => {
+                isWindows = true;
+                test('virtual:/ButtonPrimary.brs', 'virtual:/buttonprimary.brs');
+                test('virtual:\\ButtonPrimary.brs', 'virtual:/buttonprimary.brs');
+            });
+
+            it('preserves virtual:/ prefix on unix', () => {
+                isWindows = false;
+                test('virtual:/ButtonPrimary.brs', 'virtual:/buttonprimary.brs');
+                test('virtual:\\ButtonPrimary.brs', 'virtual:/buttonprimary.brs');
+            });
+
+            it('normalizes consecutive slashes in virtual paths', () => {
+                isWindows = true;
+                test('virtual://one//two.brs', 'virtual:/one/two.brs');
+                isWindows = false;
+                test('virtual://one//two.brs', 'virtual:/one/two.brs');
+            });
+
+            it('lowercases virtual path content', () => {
+                test('virtual:/UPPER/CasePath.brs', 'virtual:/upper/casepath.brs');
+            });
+        });
     });
 
     describe('isClassUsedAsFunction', () => {

src/util.ts

@@ -1822,6 +1822,14 @@ export class Util {
             return thePath;
         }
 
+        //handle `virtual:/` paths specially - just normalize slashes, don't use path.normalize which would mangle the `virtual:` prefix
+        if (/^virtual:[\/\\]/i.test(thePath)) {
+            // Strip the `virtual:` prefix, normalize slashes, then re-add the prefix
+            thePath = 'virtual:/' + thePath.slice(8).replace(/^[\/\\]+/, '').replace(/[\/\\]+/g, '/').toLowerCase();
+            this.standardizePathCache.set(originalPath, thePath);
+            return thePath;
+        }
+
         //windows path.normalize will convert all slashes to backslashes and remove duplicates
         if (this.isWindows) {
             thePath = path.win32.normalize(thePath);