libzotero/lib/Log.js

javascript libZotero

'use strict';

var log = {};

var prefLevel = 1;

var debugOut;
var warnOut;
var errorOut;

if (typeof console == 'undefined') {
	debugOut = function debugOut() {};
	warnOut = function warnOut() {};
	errorOut = function errorOut() {};
} else {
	debugOut = function debugOut(s) {
		console.log(s);
	};
	warnOut = function warnOut(s) {
		console.warn(s);
	};
	errorOut = function errorOut(s) {
		console.error(s);
	};
}

log.SetLevel = function (level) {
	prefLevel = level;
};

log.debug = function (debugstring, level) {
	if (typeof level !== 'number') {
		level = 1;
	}
	if (level <= prefLevel) {
		debugOut(debugstring);
	}
};

log.debugObject = function (obj, level) {
	if (typeof level !== 'number') {
		level = 1;
	}
	if (level <= prefLevel) {
		debugOut(obj);
	}
};

log.warn = function (warnstring) {
	warnOut(warnstring);
};

log.error = function (errorstring) {
	errorOut(errorstring);
};

log.Logger = function (prefix) {
	var llevel = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 2;

	prefLevel = llevel;
	return {
		debug: function debug(debugstring, level) {
			if (typeof debugstring == 'string') {
				return log.debug(prefix + ': ' + debugstring, level);
			} else {
				log.debug(prefix + ': \\', level);
				log.debug(debugstring, level);
				return;
			}
		},
		warn: function warn(warnstring) {
			return log.warn(prefix + ': ' + warnstring);
		},
		error: function error(errorstring) {
			return log.error(prefix + ': ' + errorstring);
		}
	};
};

module.exports = log;