CSS autocomplete in html files not working on Windows.Fixes #14467

extensions/html/server/src/test/embeddedContentUri.test.ts

@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import * as assert from 'assert';
+import {getEmbeddedContentUri, getEmbeddedLanguageId, getHostDocumentUri, isEmbeddedContentUri} from './embeddedContentUri';
+
+suite('Embedded URI', () => {
+
+	test('URI', function (): any {
+		let resourceUri1 = 'file:///c%3A/workspaces/samples/foo.html';
+		let resourceUri2 = 'file://Users/joe/samples/foo.html';
+
+		let uri = getEmbeddedContentUri(resourceUri1, 'css');
+		assert(isEmbeddedContentUri(uri));
+		assert.equal(getEmbeddedLanguageId(uri), 'css');
+		assert.equal(getHostDocumentUri(uri), resourceUri1);
+
+		let uri2 = getEmbeddedContentUri(resourceUri2, 'css');
+		assert(isEmbeddedContentUri(uri2));
+		assert.equal(getEmbeddedLanguageId(uri2), 'css');
+		assert.equal(getHostDocumentUri(uri2), resourceUri2);
+	});
+
+});

extensions/html/server/src/test/embeddedContentUri.ts

@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import Uri from 'vscode-uri';
+
+export const EMBEDDED_CONTENT_SCHEME = 'embedded-content';
+
+export function isEmbeddedContentUri(virtualDocumentUri: Uri): boolean {
+	return virtualDocumentUri.scheme === EMBEDDED_CONTENT_SCHEME;
+}
+
+export function getEmbeddedContentUri(parentDocumentUri: string, embeddedLanguageId: string): Uri {
+	return Uri.from({ scheme: EMBEDDED_CONTENT_SCHEME, authority: embeddedLanguageId, path: '/' + encodeURIComponent(parentDocumentUri) + '.' + embeddedLanguageId });
+};
+
+export function getHostDocumentUri(virtualDocumentUri: Uri): string {
+	let languageId = virtualDocumentUri.authority;
+	let path = virtualDocumentUri.path.substring(1, virtualDocumentUri.path.length - languageId.length - 1); // remove leading '/' and new file extension
+	return decodeURIComponent(path);
+};
+
+export function getEmbeddedLanguageId(virtualDocumentUri: Uri): string {
+	return virtualDocumentUri.authority;
+}