Merge pull request microsoft#170518 from MonadChains/issue-151220/add-CURRENT-TIMEZONE-OFFSET-VARIABLE

Issue 151220/add current timezone offset variable

Author: jrieken

src/vs/editor/contrib/snippet/browser/snippetVariables.ts

@@ -30,6 +30,7 @@ export const KnownSnippetVariableNames = Object.freeze<{ [key: string]: true }>(
 	'CURRENT_MONTH_NAME': true,
 	'CURRENT_MONTH_NAME_SHORT': true,
 	'CURRENT_SECONDS_UNIX': true,
+	'CURRENT_TIMEZONE_OFFSET': true,
 	'SELECTION': true,
 	'CLIPBOARD': true,
 	'TM_SELECTED_TEXT': true,
@@ -292,6 +293,14 @@ export class TimeBasedVariableResolver implements VariableResolver {
 			return TimeBasedVariableResolver.monthNamesShort[this._date.getMonth()];
 		} else if (name === 'CURRENT_SECONDS_UNIX') {
 			return String(Math.floor(this._date.getTime() / 1000));
+		} else if (name === 'CURRENT_TIMEZONE_OFFSET') {
+			const rawTimeOffset = this._date.getTimezoneOffset();
+			const sign = rawTimeOffset > 0 ? '-' : '+';
+			const hours = Math.trunc(Math.abs(rawTimeOffset / 60));
+			const hoursString = (hours < 10 ? '0' + hours : hours);
+			const minutes = Math.abs(rawTimeOffset) - hours * 60;
+			const minutesString = (minutes < 10 ? '0' + minutes : minutes);
+			return sign + hoursString + ':' + minutesString;
 		}
 
 		return undefined;

src/vs/editor/contrib/snippet/test/browser/snippetVariables.test.ts

@@ -306,6 +306,7 @@ suite('Snippet Variables Resolver', function () {
 		assertVariableResolve3(resolver, 'CURRENT_MONTH_NAME');
 		assertVariableResolve3(resolver, 'CURRENT_MONTH_NAME_SHORT');
 		assertVariableResolve3(resolver, 'CURRENT_SECONDS_UNIX');
+		assertVariableResolve3(resolver, 'CURRENT_TIMEZONE_OFFSET');
 	});
 
 	test('Time-based snippet variables resolve to the same values even as time progresses', async function () {
@@ -322,6 +323,7 @@ suite('Snippet Variables Resolver', function () {
 			$CURRENT_MONTH_NAME
 			$CURRENT_MONTH_NAME_SHORT
 			$CURRENT_SECONDS_UNIX
+			$CURRENT_TIMEZONE_OFFSET
 		`;
 
 		const clock = sinon.useFakeTimers();