objj-runtime
Version:
JavaScript (ECMAScript) and Objective-J runtime
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JavaScript
/*
* CPLog.js
* Objective-J
*
* Created by Thomas Robinson.
* Copyright 2008-2010, 280 North, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
GLOBAL(CPLogDisable) = false;
var CPLogDefaultTitle = "Cappuccino";
var CPLogLevels = ["fatal", "error", "warn", "info", "debug", "trace"];
var CPLogDefaultLevel = CPLogLevels[3];
var _CPLogLevelsInverted = {};
for (var i = 0; i < CPLogLevels.length; i++)
_CPLogLevelsInverted[CPLogLevels[i]] = i;
var _CPLogRegistrations = {};
// Register Functions:
// Register a logger for all levels, or up to an optional max level
GLOBAL(CPLogRegister) = function(aProvider, aMaxLevel, aFormatter)
{
CPLogRegisterRange(aProvider, CPLogLevels[0], aMaxLevel || CPLogLevels[CPLogLevels.length-1], aFormatter);
}
// Register a logger for a range of levels
GLOBAL(CPLogRegisterRange) = function(aProvider, aMinLevel, aMaxLevel, aFormatter)
{
var min = _CPLogLevelsInverted[aMinLevel];
var max = _CPLogLevelsInverted[aMaxLevel];
if (min !== undefined && max !== undefined && min <= max)
for (var i = min; i <= max; i++)
CPLogRegisterSingle(aProvider, CPLogLevels[i], aFormatter);
}
// Register a logger for a single level
GLOBAL(CPLogRegisterSingle) = function(aProvider, aLevel, aFormatter)
{
if (!_CPLogRegistrations[aLevel])
_CPLogRegistrations[aLevel] = [];
// prevent duplicate registrations, but change formatter
for (var i = 0; i < _CPLogRegistrations[aLevel].length; i++)
if (_CPLogRegistrations[aLevel][i][0] === aProvider)
{
_CPLogRegistrations[aLevel][i][1] = aFormatter;
return;
}
_CPLogRegistrations[aLevel].push([aProvider, aFormatter]);
}
GLOBAL(CPLogUnregister) = function(aProvider) {
for (var aLevel in _CPLogRegistrations)
for (var i = 0; i < _CPLogRegistrations[aLevel].length; i++)
if (_CPLogRegistrations[aLevel][i][0] === aProvider)
_CPLogRegistrations[aLevel].splice(i--, 1); // decrement since we're removing an element
}
// Main CPLog, which dispatches to individual loggers
function _CPLogDispatch(parameters, aLevel, aTitle)
{
if (aTitle == undefined)
aTitle = CPLogDefaultTitle;
if (aLevel == undefined)
aLevel = CPLogDefaultLevel;
// use sprintf if param 0 is a string and there is more than one param. otherwise just convert param 0 to a string
var message = (typeof parameters[0] == "string" && parameters.length > 1) ? exports.sprintf.apply(null, parameters) : String(parameters[0]);
if (_CPLogRegistrations[aLevel])
for (var i = 0; i < _CPLogRegistrations[aLevel].length; i++)
{
var logger = _CPLogRegistrations[aLevel][i];
logger[0](message, aLevel, aTitle, logger[1]);
}
}
// Setup CPLog() and CPLog.xxx() aliases
GLOBAL(CPLog) = function() { _CPLogDispatch(arguments); }
for (var i = 0; i < CPLogLevels.length; i++)
CPLog[CPLogLevels[i]] = (function(level) { return function() { _CPLogDispatch(arguments, level); }; })(CPLogLevels[i]);
// Helpers functions:
var _CPFormatLogMessage = function(aString, aLevel, aTitle)
{
var now = new Date(),
titleAndLevel;
if (aLevel === null)
aLevel = "";
else
{
aLevel = aLevel || "info";
aLevel = "[" + CPLogColorize(aLevel, aLevel) + "]";
}
aTitle = aTitle || "";
if (aTitle && aLevel)
aTitle += " ";
titleAndLevel = aTitle + aLevel;
if (titleAndLevel)
titleAndLevel += ": ";
if (typeof exports.sprintf == "function")
return exports.sprintf("%4d-%02d-%02d %02d:%02d:%02d.%03d %s%s",
now.getFullYear(), now.getMonth() + 1, now.getDate(),
now.getHours(), now.getMinutes(), now.getSeconds(), now.getMilliseconds(),
titleAndLevel, aString);
else
return now + " " + titleAndLevel + ": " + aString;
}
// Loggers:
// CPLogConsole uses the built in "console" object
GLOBAL(CPLogConsole) = function(aString, aLevel, aTitle, aFormatter)
{
if (typeof console != "undefined")
{
var message = (aFormatter || _CPFormatLogMessage)(aString, aLevel, aTitle),
logger = {
"fatal": "error",
"error": "error",
"warn": "warn",
"info": "info",
"debug": "debug",
"trace": "debug"
}[aLevel];
if (logger && console[logger])
console[logger](message);
else if (console.log)
console.log(message);
}
}
#if COMMONJS
var levelColorMap = {
"fatal": "red",
"error": "red",
"warn" : "yellow",
"info" : "green",
"debug": "cyan",
"trace": "blue"
}
try {
var SYSTEM = require("system");
var FILE = require("file");
if (SYSTEM.args[0])
CPLogDefaultTitle = FILE.basename(SYSTEM.args[0]);
} catch (e) {
}
var stream;
GLOBAL(CPLogColorize) = function(aString, aLevel)
{
// Try to determine if a colorizing stanza is already open, they can't be nested
if (/^.*\x00\w+\([^\x00]*$/.test(aString))
return aString;
else
return "\0" + (levelColorMap[aLevel] || "info") + "(" + aString + "\0)";
}
GLOBAL(CPLogPrint) = function(aString, aLevel, aTitle, aFormatter)
{
if (stream === undefined) {
try {
#if NODEJS
stream = require("./term").stream;
#else
stream = require("narwhal/term").stream;
#endif
} catch (e) {
stream = null;
}
}
var formatter = aFormatter || _CPFormatLogMessage;
if (stream) {
if (aLevel == "fatal" || aLevel == "error" || aLevel == "warn")
stream.print(CPLogColorize(formatter(aString, aLevel, aTitle), aLevel));
else
stream.print(formatter(aString, aLevel, aTitle));
} else if (typeof print != "undefined") {
print(formatter(aString, aLevel, aTitle))
}
}
#else
// A stub to allow the same formatter to be used for both stream and browser output
GLOBAL(CPLogColorize) = function(aString, aLevel)
{
return aString;
}
// CPLogAlert uses basic browser alert() functions
GLOBAL(CPLogAlert) = function(aString, aLevel, aTitle, aFormatter)
{
if (typeof alert != "undefined" && !CPLogDisable)
{
var message = (aFormatter || _CPFormatLogMessage)(aString, aLevel, aTitle);
CPLogDisable = !confirm(message + "\n\n(Click cancel to stop log alerts)");
}
}
// CPLogPopup uses a slick popup window in the browser:
var CPLogWindow = null;
GLOBAL(CPLogPopup) = function(aString, aLevel, aTitle, aFormatter)
{
try {
if (CPLogDisable || window.open == undefined)
return;
if (!CPLogWindow || !CPLogWindow.document)
{
CPLogWindow = window.open("", "_blank", "width=600,height=400,status=no,resizable=yes,scrollbars=yes");
if (!CPLogWindow) {
CPLogDisable = !confirm(aString + "\n\n(Disable pop-up blocking for CPLog window; Click cancel to stop log alerts)");
return;
}
_CPLogInitPopup(CPLogWindow);
}
var logDiv = CPLogWindow.document.createElement("div");
logDiv.setAttribute("class", aLevel || "fatal");
var message = (aFormatter || _CPFormatLogMessage)(aString, aFormatter ? aLevel : null, aTitle);
logDiv.appendChild(CPLogWindow.document.createTextNode(message));
CPLogWindow.log.appendChild(logDiv);
if (CPLogWindow.focusEnabled.checked)
CPLogWindow.focus();
if (CPLogWindow.blockEnabled.checked)
CPLogWindow.blockEnabled.checked = CPLogWindow.confirm(message+"\nContinue blocking?");
if (CPLogWindow.scrollEnabled.checked)
CPLogWindow.scrollToBottom();
} catch(e) {
// TODO: some error handling/reporting
}
}
var CPLogPopupStyle ='<style type="text/css" media="screen"> \
body{font:10px Monaco,Courier,"Courier New",monospace,mono;padding-top:15px;} \
div > .fatal,div > .error,div > .warn,div > .info,div > .debug,div > .trace{display:none;overflow:hidden;white-space:pre;padding:0px 5px 0px 5px;margin-top:2px;-moz-border-radius:5px;-webkit-border-radius:5px;} \
div[wrap="yes"] > div{white-space:normal;} \
.fatal{background-color:#ffb2b3;} \
.error{background-color:#ffe2b2;} \
.warn{background-color:#fdffb2;} \
.info{background-color:#e4ffb2;} \
.debug{background-color:#a0e5a0;} \
.trace{background-color:#99b9ff;} \
.enfatal .fatal,.enerror .error,.enwarn .warn,.eninfo .info,.endebug .debug,.entrace .trace{display:block;} \
div#header{background-color:rgba(240,240,240,0.82);position:fixed;top:0px;left:0px;width:100%;border-bottom:1px solid rgba(0,0,0,0.33);text-align:center;} \
ul#enablers{display:inline-block;margin:1px 15px 0 15px;padding:2px 0 2px 0;} \
ul#enablers li{display:inline;padding:0px 5px 0px 5px;margin-left:4px;-moz-border-radius:5px;-webkit-border-radius:5px;} \
[enabled="no"]{opacity:0.25;} \
ul#options{display:inline-block;margin:0 15px 0px 15px;padding:0 0px;} \
ul#options li{margin:0 0 0 0;padding:0 0 0 0;display:inline;} \
</style>';
function _CPLogInitPopup(logWindow)
{
var doc = logWindow.document;
// HACK so that head is available below:
doc.writeln("<html><head><title></title>"+CPLogPopupStyle+"</head><body></body></html>");
doc.title = CPLogDefaultTitle + " Run Log";
var head = doc.getElementsByTagName("head")[0];
var body = doc.getElementsByTagName("body")[0];
var base = window.location.protocol + "//" + window.location.host + window.location.pathname;
base = base.substring(0,base.lastIndexOf("/")+1);
var div = doc.createElement("div");
div.setAttribute("id", "header");
body.appendChild(div);
// Enablers
var ul = doc.createElement("ul");
ul.setAttribute("id", "enablers");
div.appendChild(ul);
for (var i = 0; i < CPLogLevels.length; i++) {
var li = doc.createElement("li");
li.setAttribute("id", "en"+CPLogLevels[i]);
li.setAttribute("class", CPLogLevels[i]);
li.setAttribute("onclick", "toggle(this);");
li.setAttribute("enabled", "yes");
li.appendChild(doc.createTextNode(CPLogLevels[i]));
ul.appendChild(li);
}
// Options
var ul = doc.createElement("ul");
ul.setAttribute("id", "options");
div.appendChild(ul);
var options = {"focus":["Focus",false], "block":["Block",false], "wrap":["Wrap",false], "scroll":["Scroll",true], "close":["Close",true]};
for (o in options) {
var li = doc.createElement("li");
ul.appendChild(li);
logWindow[o+"Enabled"] = doc.createElement("input");
logWindow[o+"Enabled"].setAttribute("id", o);
logWindow[o+"Enabled"].setAttribute("type", "checkbox");
if (options[o][1])
logWindow[o+"Enabled"].setAttribute("checked", "checked");
li.appendChild(logWindow[o+"Enabled"]);
var label = doc.createElement("label");
label.setAttribute("for", o);
label.appendChild(doc.createTextNode(options[o][0]));
li.appendChild(label);
}
// Log
logWindow.log = doc.createElement("div");
logWindow.log.setAttribute("class", "enerror endebug enwarn eninfo enfatal entrace");
body.appendChild(logWindow.log);
logWindow.toggle = function(elem) {
var enabled = (elem.getAttribute("enabled") == "yes") ? "no" : "yes";
elem.setAttribute("enabled", enabled);
if (enabled == "yes")
logWindow.log.className += " " + elem.id
else
logWindow.log.className = logWindow.log.className.replace(new RegExp("[\\s]*"+elem.id, "g"), "");
}
// Scroll
logWindow.scrollToBottom = function() {
logWindow.scrollTo(0, body.offsetHeight);
}
// Wrap
logWindow.wrapEnabled.addEventListener("click", function() {
logWindow.log.setAttribute("wrap", logWindow.wrapEnabled.checked ? "yes" : "no");
}, false);
// Clear
logWindow.addEventListener("keydown", function(e) {
var e = e || logWindow.event;
if (e.keyCode == 75 && (e.ctrlKey || e.metaKey)) {
while (logWindow.log.firstChild) {
logWindow.log.removeChild(logWindow.log.firstChild);
}
e.preventDefault();
}
}, "false");
// Parent closing
window.addEventListener("unload", function() {
if (logWindow && logWindow.closeEnabled && logWindow.closeEnabled.checked) {
CPLogDisable = true;
logWindow.close();
}
}, false);
// Log popup closing
logWindow.addEventListener("unload", function() {
if (!CPLogDisable) {
CPLogDisable = !confirm("Click cancel to stop logging");
}
}, false);
}
#endif
#if COMMONJS
CPLogDefault = CPLogPrint;
#else
CPLogDefault = (typeof window === "object" && window.console) ? CPLogConsole : CPLogPopup;
#endif