Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/extensions/git/src/emoji.ts

@@ -0,0 +1,39 @@
+/*---------------------------------------------------------------------------------------------
+ *  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 { workspace, Uri } from 'vscode';
+import { getExtensionContext } from './main';
+import { TextDecoder } from 'util';
+
+const emojiRegex = /:([-+_a-z0-9]+):/g;
+
+let emojiMap: Record<string, string> | undefined;
+let emojiMapPromise: Promise<void> | undefined;
+
+export async function ensureEmojis() {
+	if (emojiMap === undefined) {
+		if (emojiMapPromise === undefined) {
+			emojiMapPromise = loadEmojiMap();
+		}
+		await emojiMapPromise;
+	}
+}
+
+async function loadEmojiMap() {
+	const context = getExtensionContext();
+	const uri = (Uri as any).joinPath(context.extensionUri, 'resources', 'emojis.json');
+	emojiMap = JSON.parse(new TextDecoder('utf8').decode(await workspace.fs.readFile(uri)));
+}
+
+export function emojify(message: string) {
+	if (emojiMap === undefined) {
+		return message;
+	}
+
+	return message.replace(emojiRegex, (s, code) => {
+		return emojiMap?.[code] || s;
+	});
+}