147 lines
2.7 KiB
JavaScript
147 lines
2.7 KiB
JavaScript
// Copyright 2011 Mark Cavage, Inc. All rights reserved.
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///--- Globals
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var FMT_STR = '%d-%s-%s %s:%s:%sZ %s - %s: ';
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var _i = 0;
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var LEVELS = {
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Trace: _i++,
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Debug: _i++,
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Info: _i++,
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Warn: _i++,
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Error: _i++,
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Fatal: _i++
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};
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var level = 'Info';
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// --- Helpers
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function pad(val) {
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if (parseInt(val, 10) < 10) {
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val = '0' + val;
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}
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return val;
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}
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function format(level, name, args) {
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var d = new Date();
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var fmtStr = args.shift();
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var fmtArgs = [
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d.getUTCFullYear(),
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pad(d.getUTCMonth()),
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pad(d.getUTCDate()),
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pad(d.getUTCHours()),
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pad(d.getUTCMinutes()),
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pad(d.getUTCSeconds()),
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level,
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name
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];
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args = fmtArgs.concat(args);
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var output = (FMT_STR + fmtStr).replace(/%[sdj]/g, function(match) {
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switch (match) {
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case '%s': return new String(args.shift());
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case '%d': return new Number(args.shift());
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case '%j': return JSON.stringify(args.shift());
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default:
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return match;
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}
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});
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return output;
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}
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///--- API
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function Log(name) {
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this.name = name;
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}
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Log.prototype._write = function(level, args) {
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var data = format(level, this.name, args);
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console.error(data);
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};
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Log.prototype.isTraceEnabled = function() {
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return (LEVELS.Trace >= LEVELS[level]);
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};
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Log.prototype.trace = function() {
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if (this.isTraceEnabled())
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this._write('TRACE', Array.prototype.slice.call(arguments));
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};
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Log.prototype.isDebugEnabled = function() {
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return (LEVELS.Debug >= LEVELS[level]);
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};
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Log.prototype.debug = function() {
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if (this.isDebugEnabled())
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this._write('DEBUG', Array.prototype.slice.call(arguments));
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};
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Log.prototype.isInfoEnabled = function() {
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return (LEVELS.Info >= LEVELS[level]);
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};
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Log.prototype.info = function() {
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if (this.isInfoEnabled())
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this._write('INFO', Array.prototype.slice.call(arguments));
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};
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Log.prototype.isWarnEnabled = function() {
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return (LEVELS.Warn >= LEVELS[level]);
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};
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Log.prototype.warn = function() {
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if (this.isWarnEnabled())
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this._write('WARN', Array.prototype.slice.call(arguments));
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};
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Log.prototype.isErrorEnabled = function() {
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return (LEVELS.Error >= LEVELS[level]);
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};
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Log.prototype.error = function() {
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if (this.isErrorEnabled())
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this._write('ERROR', Array.prototype.slice.call(arguments));
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};
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Log.prototype.isFatalEnabled = function() {
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return (LEVELS.Fatal >= LEVELS[level]);
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};
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Log.prototype.fatal = function() {
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if (this.isFatalEnabled())
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this._write('FATAL', Array.prototype.slice.call(arguments));
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};
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module.exports = {
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setLevel: function(l) {
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if (LEVELS[l] !== undefined)
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level = l;
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return level;
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},
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getLogger: function(name) {
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if (!name || typeof(name) !== 'string')
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throw new TypeError('name (string) required');
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return new Log(name);
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}
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};
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