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/**
* jsDump
* Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
* Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
* Date: 5/15/2008
* @projectDescription Advanced and extensible data dumping for Javascript.
* @version 1.0.0
* @author Ariel Flesler
*/
var jsDump;
(function(){
function quote( str ){
return '"' + str.toString().replace(/"/g, '\\"') + '"';
};
function literal( o ){
return o + '';
};
function join( pre, arr, post ){
var s = jsDump.separator(),
base = jsDump.indent(),
inner = jsDump.indent(1);
if( arr.join )
arr = arr.join( ',' + s + inner );
if( !arr )
return pre + post;
return [ pre, inner + arr, base + post ].join(s);
};
function array( arr ){
var i = arr.length, ret = Array(i);
this.up();
while( i-- )
ret[i] = this.parse( arr[i] );
this.down();
return join( '[', ret, ']' );
};
var reName = /^function (\w+)/;
jsDump = {
parse:function( obj, type ){//type is used mostly internally, you can fix a (custom)type in advance
var parser = this.parsers[ type || this.typeOf(obj) ];
type = typeof parser;
return type == 'function' ? parser.call( this, obj ) :
type == 'string' ? parser :
this.parsers.error;
},
typeOf:function( obj ){
var type = typeof obj,
f = 'function';//we'll use it 3 times, save it
return type != 'object' && type != f ? type :
!obj ? 'null' :
obj.exec ? 'regexp' :// some browsers (FF) consider regexps functions
obj.getHours ? 'date' :
obj.scrollBy ? 'window' :
obj.nodeName == '#document' ? 'document' :
obj.nodeName ? 'node' :
obj.item ? 'nodelist' : // Safari reports nodelists as functions
obj.callee ? 'arguments' :
obj.call || obj.constructor != Array && //an array would also fall on this hack
(obj+'').indexOf(f) != -1 ? f : //IE reports functions like alert, as objects
'length' in obj ? 'array' :
type;
},
separator:function(){
return this.multiline ? this.HTML ? '<br />' : '\n' : this.HTML ? ' ' : ' ';
},
indent:function( extra ){// extra can be a number, shortcut for increasing-calling-decreasing
if( !this.multiline )
return '';
var chr = this.indentChar;
if( this.HTML )
chr = chr.replace(/\t/g,' ').replace(/ /g,' ');
return Array( this._depth_ + (extra||0) ).join(chr);
},
up:function( a ){
this._depth_ += a || 1;
},
down:function( a ){
this._depth_ -= a || 1;
},
setParser:function( name, parser ){
this.parsers[name] = parser;
},
// The next 3 are exposed so you can use them
quote:quote,
literal:literal,
join:join,
//
_depth_: 1,
// This is the list of parsers, to modify them, use jsDump.setParser
parsers:{
window: '[Window]',
document: '[Document]',
error:'[ERROR]', //when no parser is found, shouldn't happen
unknown: '[Unknown]',
'null':'null',
undefined:'undefined',
'function':function( fn ){
var ret = 'function',
name = 'name' in fn ? fn.name : (reName.exec(fn)||[])[1];//functions never have name in IE
if( name )
ret += ' ' + name;
ret += '(';
ret = [ ret, this.parse( fn, 'functionArgs' ), '){'].join('');
return join( ret, this.parse(fn,'functionCode'), '}' );
},
array: array,
nodelist: array,
arguments: array,
object:function( map ){
var ret = [ ];
this.up();
for( var key in map )
ret.push( this.parse(key,'key') + ': ' + this.parse(map[key]) );
this.down();
return join( '{', ret, '}' );
},
node:function( node ){
var open = this.HTML ? '<' : '<',
close = this.HTML ? '>' : '>';
var tag = node.nodeName.toLowerCase(),
ret = open + tag;
for( var a in this.DOMAttrs ){
var val = node[this.DOMAttrs[a]];
if( val )
ret += ' ' + a + '=' + this.parse( val, 'attribute' );
}
return ret + close + open + '/' + tag + close;
},
functionArgs:function( fn ){//function calls it internally, it's the arguments part of the function
var l = fn.length;
if( !l ) return '';
var args = Array(l);
while( l-- )
args[l] = String.fromCharCode(97+l);//97 is 'a'
return ' ' + args.join(', ') + ' ';
},
key:quote, //object calls it internally, the key part of an item in a map
functionCode:'[code]', //function calls it internally, it's the content of the function
attribute:quote, //onode calls it internally, it's an html attribute value
string:quote,
date:quote,
regexp:literal, //regex
number:literal,
'boolean':literal
},
DOMAttrs:{//attributes to dump from nodes, name=>realName
id:'id',
name:'name',
'class':'className'
},
HTML:false,//if true, entities are escaped ( <, >, \t, space and \n )
indentChar:' ',//indentation unit
multiline:true //if true, items in a collection, are separated by a \n, else just a space.
};
})();
exports.jsDump = jsDump;
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