SQL Operations Studio Public Preview 1 (0.23) release source code

extensions/markdown/src/logger.ts

@@ -0,0 +1,78 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import { OutputChannel, window, workspace } from 'vscode';
+
+enum Trace {
+	Off,
+	Verbose
+}
+
+namespace Trace {
+	export function fromString(value: string): Trace {
+		value = value.toLowerCase();
+		switch (value) {
+			case 'off':
+				return Trace.Off;
+			case 'verbose':
+				return Trace.Verbose;
+			default:
+				return Trace.Off;
+		}
+	}
+}
+
+
+function isString(value: any): value is string {
+	return Object.prototype.toString.call(value) === '[object String]';
+}
+
+export class Logger {
+	private trace: Trace;
+	private _output: OutputChannel;
+
+	constructor() {
+		this.updateConfiguration();
+	}
+
+	public log(message: string, data?: any): void {
+		if (this.trace === Trace.Verbose) {
+			this.output.appendLine(`[Log - ${(new Date().toLocaleTimeString())}] ${message}`);
+			if (data) {
+				this.output.appendLine(this.data2String(data));
+			}
+		}
+	}
+
+	public updateConfiguration() {
+		this.trace = this.readTrace();
+	}
+
+	private get output(): OutputChannel {
+		if (!this._output) {
+			this._output = window.createOutputChannel('Markdown');
+		}
+		return this._output;
+	}
+
+	private readTrace(): Trace {
+		return Trace.fromString(workspace.getConfiguration().get<string>('markdown.trace', 'off'));
+	}
+
+	private data2String(data: any): string {
+		if (data instanceof Error) {
+			if (isString(data.stack)) {
+				return data.stack;
+			}
+			return (data as Error).message;
+		}
+		if (isString(data)) {
+			return data;
+		}
+		return JSON.stringify(data, undefined, 2);
+	}
+}