source: Dev/trunk/d3/lib/env-js/envjs/console.js @ 76

/**
 * @author envjs team
 * @Console
 */

var Envjs = Envjs || require('./platform/core').Envjs;

/*
 * Envjs console.1.3.pre03
 * Pure JavaScript Browser Environment
 * By John Resig <http://ejohn.org/> and the Envjs Team
 * Copyright 2008-2010 John Resig, under the MIT License
 */

//CLOSURE_START
(function(){




/**
 * @author envjs team
 * borrowed 99%-ish with love from firebug-lite
 */

//leaked globally on purpose;
try{
    console.log();
}catch(e){


function escapeHTML(value)
{
    return value;
}

function objectToString(object)
{
    try
    {
        return object+"";
    }
    catch (exc)
    {
        return null;
    }
}

// ********************************************************************************************

function appendText(object, html)
{
    html.push(escapeHTML(objectToString(object)));
}

function appendNull(object, html)
{
    html.push(escapeHTML(objectToString(object)));
}

function appendString(object, html)
{
    html.push(escapeHTML(objectToString(object)));
}

function appendInteger(object, html)
{
    html.push(escapeHTML(objectToString(object)));
}

function appendFloat(object, html)
{
    html.push(escapeHTML(objectToString(object)));
}

function appendFunction(object, html)
{
    var reName = /function ?(.*?)\(/;
    var m = reName.exec(objectToString(object));
    var name = m ? m[1] : "function";
    html.push(escapeHTML(name));
}

function appendObjectFormatted(object, html)
{
    var text = objectToString(object);
    var reObject = /\[object (.*?)\]/;

    var m = reObject.exec(text);
    html.push( m ? m[1] : text);
}

function appendSelector(object, html)
{

    html.push(escapeHTML(object.nodeName.toLowerCase()));
    if (object.id) {
        html.push(escapeHTML(object.id));
    }
    if (object.className) {
        html.push(escapeHTML(object.className));
    }
}

function appendNode(node, html)
{
    if (node.nodeType == 1)
    {
        html.push( node.nodeName.toLowerCase());

        for (var i = 0; i < node.attributes.length; ++i)
        {
            var attr = node.attributes[i];
            if (!attr.specified) {
                continue;
        }

            html.push( attr.nodeName.toLowerCase(),escapeHTML(attr.nodeValue));
        }

        if (node.firstChild)
        {
            for (var child = node.firstChild; child; child = child.nextSibling) {
                appendNode(child, html);
        }

            html.push( node.nodeName.toLowerCase());
        }
    }
    else if (node.nodeType === 3)
    {
        html.push(escapeHTML(node.nodeValue));
    }
}

function appendObject(object, html)
{
    try
    {
        if (object === undefined) {
            appendNull("undefined", html);
        } else if (object === null) {
            appendNull("null", html);
        } else if (typeof object == "string") {
            appendString(object, html);
    } else if (typeof object == "number") {
            appendInteger(object, html);
    } else if (typeof object == "function") {
            appendFunction(object, html);
        } else if (object.nodeType == 1) {
            appendSelector(object, html);
        } else if (typeof object == "object") {
            appendObjectFormatted(object, html);
        } else {
            appendText(object, html);
    }
    }
    catch (exc)
    {
    }
}


function parseFormat(format)
{
    var parts = [];

    var reg = /((^%|[^\\]%)(\d+)?(\.)([a-zA-Z]))|((^%|[^\\]%)([a-zA-Z]))/;
    var appenderMap = {s: appendText, d: appendInteger, i: appendInteger, f: appendFloat};

    for (var m = reg.exec(format); m; m = reg.exec(format))
    {
        var type = m[8] ? m[8] : m[5];
        var appender = type in appenderMap ? appenderMap[type] : appendObject;
        var precision = m[3] ? parseInt(m[3], 10) : (m[4] == "." ? -1 : 0);

        parts.push(format.substr(0, m[0][0] == "%" ? m.index : m.index+1));
        parts.push({appender: appender, precision: precision});

        format = format.substr(m.index+m[0].length);
    }

    parts.push(format);

    return parts;
}



function logFormatted(objects, className)
{
    var html = [],
        i= 0,
        object;

    var format = objects[0];
    var objIndex = 0;

    if (typeof(format) != "string")
    {
        format = "";
        objIndex = -1;
    }

    var parts = parseFormat(format);
    for (i = 0; i < parts.length; ++i)
    {
        var part = parts[i];
        if (part && typeof(part) == "object")
        {
            object = objects[++objIndex];
            part.appender(object, html);
        }
        else {
            appendText(part, html);
        }
    }

    for (i = objIndex+1; i < objects.length; ++i)
    {
        appendText(" ", html);

        object = objects[i];
        if (typeof(object) == "string") {
            appendText(object, html);
        } else {
            appendObject(object, html);
        }
    }

    Envjs.log(html.join(' '));
}


Console = function(module){
    var $level,
        $logger,
        $null = function(){};
    $logger = {
        log: function(level){
            logFormatted(arguments, "");
        },
        debug: function(level){
            logFormatted(arguments, "DEBUG");
        },
        info:  function(level){
            logFormatted(arguments, "INFO");
        },
        warn:  function(level){
            logFormatted(arguments, "WARN");
        },
        error:  function(level){
            logFormatted(arguments, "ERROR");
        },
        trace: function(){
            Envjs.trace();
        }
    };

    return $logger;
};

console = new Console();
exports.console = console;

}



/**
 * @author john resig & the envjs team
 * @uri http://www.envjs.com/
 * @copyright 2008-2010
 * @license MIT
 */
//CLOSURE_END
}());