planetstack/core/dashboard/shell/shell_utils.js - xos - Gitiles

 DB = function() {
 }

 print = function(msg) {
   //console.log(msg);
 }


 friendlyEqual = function( a , b ){
     if ( a == b )
         return true;

     if ( tojson( a ) == tojson( b ) )
         return true;

     return false;
 }


 doassert = function( msg ){
     print( "assert: " + msg );
     throw msg;
 }

 assert = function( b , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( b )
         return;

     doassert( "assert failed : " + msg );
 }

 assert.eq = function( a , b , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( a == b )
         return;

     if ( ( a != null && b != null ) && friendlyEqual( a , b ) )
         return;

     doassert( "[" + tojson( a ) + "] != [" + tojson( b ) + "] are not equal : " + msg );
 }

 assert.neq = function( a , b , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );
     if ( a != b )
         return;

     doassert( "[" + a + "] != [" + b + "] are equal : " + msg );
 }

 assert.soon = function( f, msg, timeout, interval ) {
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     var start = new Date();
     timeout = timeout || 30000;
     interval = interval || 200;
     var last;
     while( 1 ) {

         if ( typeof( f ) == "string" ){
             if ( eval( f ) )
                 return;
         }
         else {
             if ( f() )
                 return;
         }

         if ( ( new Date() ).getTime() - start.getTime() > timeout )
             doassert( "assert.soon failed: " + f + ", msg:" + msg );
         sleep( interval );
     }
 }

 assert.throws = function( func , params , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );
     try {
         func.apply( null , params );
     }
     catch ( e ){
         return e;
     }

     doassert( "did not throw exception: " + msg );
 }

 assert.commandWorked = function( res , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( res.ok == 1 )
         return;

     doassert( "command failed: " + tojson( res ) + " : " + msg );
 }

 assert.commandFailed = function( res , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( res.ok == 0 )
         return;

     doassert( "command worked when it should have failed: " + tojson( res ) + " : " + msg );
 }

 assert.isnull = function( what , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( what == null )
         return;

     doassert( "supposed to null (" + ( msg || "" ) + ") was: " + tojson( what ) );
 }

 assert.lt = function( a , b , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( a < b )
         return;
     doassert( a + " is not less than " + b + " : " + msg );
 }

 assert.gt = function( a , b , msg ){
     if ( assert._debug && msg ) print( "in assert for: " + msg );

     if ( a > b )
         return;
     doassert( a + " is not greater than " + b + " : " + msg );
 }

 Object.extend = function( dst , src , deep ){
     for ( var k in src ){
         var v = src[k];
         if ( deep && typeof(v) == "object" ){
             v = Object.extend( typeof ( v.length ) == "number" ? [] : {} , v , true );
         }
         dst[k] = v;
     }
     return dst;
 }

 argumentsToArray = function( a ){
     var arr = [];
     for ( var i=0; i<a.length; i++ )
         arr[i] = a[i];
     return arr;
 }

 isString = function( x ){
     return typeof( x ) == "string";
 }

 isNumber = function(x){
     return typeof( x ) == "number";
 }

 isObject = function( x ){
     return typeof( x ) == "object";
 }

 String.prototype.trim = function() {
     return this.replace(/^\s+|\s+$/g,"");
 }
 String.prototype.ltrim = function() {
     return this.replace(/^\s+/,"");
 }
 String.prototype.rtrim = function() {
     return this.replace(/\s+$/,"");
 }

 Date.timeFunc = function( theFunc , numTimes ){

     var start = new Date();

     numTimes = numTimes || 1;
     for ( var i=0; i<numTimes; i++ ){
         theFunc.apply( null , argumentsToArray( arguments ).slice( 2 ) );
     }

     return (new Date()).getTime() - start.getTime();
 }

 Date.prototype.tojson = function(){
     return "\"" + this.toString() + "\"";
 }

 RegExp.prototype.tojson = RegExp.prototype.toString;

 Array.contains = function( a  , x ){
     for ( var i=0; i<a.length; i++ ){
         if ( a[i] == x )
             return true;
     }
     return false;
 }

 Array.unique = function( a ){
     var u = [];
     for ( var i=0; i<a.length; i++){
         var o = a[i];
         if ( ! Array.contains( u , o ) ){
             u.push( o );
         }
     }
     return u;
 }

 Array.shuffle = function( arr ){
     for ( var i=0; i<arr.length-1; i++ ){
         var pos = i+Math.floor(Math.random()*(arr.length-i));
         var save = arr[i];
         arr[i] = arr[pos];
         arr[pos] = save;
     }
     return arr;
 }


 Array.tojson = function( a , indent , x , html){
     if (!indent)
         indent = "";
     var spacer = "";
     if(html) {
       spacer = "<br/>";
       indent = " &nbsp; "
     }

     var s = spacer + "[ " + spacer;
     indent += " ";
     for ( var i=0; i<a.length; i++){
         s += indent + tojson( a[i], indent );
         if ( i < a.length - 1 ){
             s += "," + spacer;
         }
     }
     if ( a.length == 0 ) {
         s += indent;
     }

     indent = indent.substring(1);
     s += spacer + " "+"]";
     return s;
 }

 Array.fetchRefs = function( arr , coll ){
     var n = [];
     for ( var i=0; i<arr.length; i ++){
         var z = arr[i];
         if ( coll && coll != z.getCollection() )
             continue;
         n.push( z.fetch() );
     }

     return n;
 }

 Array.sum = function( arr ){
     if ( arr.length == 0 )
         return null;
     var s = arr[0];
     for ( var i=1; i<arr.length; i++ )
         s += arr[i];
     return s;
 }

 Array.avg = function( arr ){
     if ( arr.length == 0 )
         return null;
     return Array.sum( arr ) / arr.length;
 }

 Array.stdDev = function( arr ){
     var avg = Array.avg( arr );
     var sum = 0;

     for ( var i=0; i<arr.length; i++ ){
         sum += Math.pow( arr[i] - avg , 2 );
     }

     return Math.sqrt( sum / arr.length );
 }

 if ( ! ObjectId.prototype )
     ObjectId.prototype = {}

 ObjectId.prototype.toString = function(){
     return this.str;
 }

 ObjectId.prototype.tojson = function(){
     return "ObjectId(\"" + this.str + "\")";
 }

 ObjectId.prototype.isObjectId = true;

 tojson = function( x, indent , nolint , html){
     if ( x == null )
         return "null";

     if ( x == undefined )
         return "undefined";

     if (!indent)
         indent = "";

     switch ( typeof x ){

     case "string": {
         var s = "\"";
         for ( var i=0; i<x.length; i++ ){
             if ( x[i] == '"' ){
                 s += "\\\"";
             }
             else
                 s += x[i];
         }
         return s + "\"";
     }

     case "number":
     case "boolean":
         return "" + x;

     case "object":{
         var s = tojsonObject( x, indent , nolint , html);
         if ( ( nolint == null || nolint == true ) && s.length < 80 && ( indent == null || indent.length == 0 ) ){
             s = s.replace( /[\s\r\n ]+/gm , " " );
         }
         return s;
     }

     case "function":
         return x.toString();


     default:
         throw "tojson can't handle type " + ( typeof x );
     }

 }

 tojsonObject = function( x, indent , nolint , html){
     if(html) {
       var lineEnding = "<br/>";
       var tabSpace   = "&nbsp;";
     }
     else {
       var lineEnding = nolint ? " " : "\n";
       var tabSpace = nolint ? "" : "\t";
     }

     assert.eq( ( typeof x ) , "object" , "tojsonObject needs object, not [" + ( typeof x ) + "]" );

     if (!indent)
         indent = "";

     if ( x.hasOwnProperty("__str__")) {
         return x.__str__();
     }

     if ( typeof( x.tojson ) == "function" && x.tojson != tojson ) {
         return x.tojson(indent,nolint,html);
     }

     if ( typeof( x.constructor.tojson ) == "function" && x.constructor.tojson != tojson ) {
         return x.constructor.tojson( x, indent , nolint, html );
     }

     if ( x.toString() == "[object MaxKey]" )
         return "{ $maxKey : 1 }";
     if ( x.toString() == "[object MinKey]" )
         return "{ $minKey : 1 }";

     var s = "{" + lineEnding;

     // push one level of indent
     indent += tabSpace;

     var total = 0;
     for ( var k in x ) total++;
     if ( total == 0 ) {
         s += indent + lineEnding;
     }

     var keys = x;
     if ( typeof( x._simpleKeys ) == "function" )
         keys = x._simpleKeys();
     var num = 1;
     for ( var k in keys ){
         var val = x[k];

         s += indent + "\"" + k + "\" : " + tojson( val, indent , nolint );
         if (num != total) {
             s += ",";
             num++;
         }
         s += lineEnding;
     }

     // pop one level of indent
     indent = indent.substring(1);
     return s + indent + "}";
 }

 shellPrint = function( x ){
     it = x;
     if ( x != undefined )
         shellPrintHelper( x );
 }

 printjson = function(x){
     print( tojson( x ) );
 }

 shellPrintHelper = function( x ){

     if ( typeof( x ) == "undefined" ){

         return;
     }

     if ( x == null ){
         print( "null" );
         return;
     }

     if ( typeof x != "object" )
         return print( x );

     var p = x.shellPrint;
     if ( typeof p == "function" )
         return x.shellPrint();

     var p = x.tojson;
     if ( typeof p == "function" )
         print( x.tojson() );
     else
         print( tojson( x ) );
 }

 shellHelper = function( command , rest , shouldPrint ){
     command = command.trim();
     var args = rest.trim().replace(/;$/,"").split( "\s+" );

     if ( ! shellHelper[command] )
         throw "no command [" + command + "]";

     var res = shellHelper[command].apply( null , args );
     if ( shouldPrint ){
         shellPrintHelper( res );
     }
     return res;
 }

 help = shellHelper.help = function(){
     print( "HELP" );
     print( "\t" + "show dbs                     show database names");
     print( "\t" + "show collections             show collections in current database");
     print( "\t" + "show users                   show users in current database");
     print( "\t" + "show profile                 show most recent system.profile entries with time >= 1ms");
     print( "\t" + "use <db name>                set curent database to <db name>" );
     print( "\t" + "db.help()                    help on DB methods");
     print( "\t" + "db.foo.help()                help on collection methods");
     print( "\t" + "db.foo.find()                list objects in collection foo" );
     print( "\t" + "db.foo.find( { a : 1 } )     list objects in foo where a == 1" );
     print( "\t" + "it                           result of the last line evaluated; use to further iterate");
 }

 if ( typeof( Map ) == "undefined" ){
     Map = function(){
         this._data = {};
     }
 }

 Map.hash = function( val ){
     if ( ! val )
         return val;

     switch ( typeof( val ) ){
     case 'string':
     case 'number':
     case 'date':
         return val.toString();
     case 'object':
     case 'array':
         var s = "";
         for ( var k in val ){
             s += k + val[k];
         }
         return s;
     }

     throw "can't hash : " + typeof( val );
 }

 Map.prototype.put = function( key , value ){
     var o = this._get( key );
     var old = o.value;
     o.value = value;
     return old;
 }

 Map.prototype.get = function( key ){
     return this._get( key ).value;
 }

 Map.prototype._get = function( key ){
     var h = Map.hash( key );
     var a = this._data[h];
     if ( ! a ){
         a = [];
         this._data[h] = a;
     }

     for ( var i=0; i<a.length; i++ ){
         if ( friendlyEqual( key , a[i].key ) ){
             return a[i];
         }
     }
     var o = { key : key , value : null };
     a.push( o );
     return o;
 }

 Map.prototype.values = function(){
     var all = [];
     for ( var k in this._data ){
         this._data[k].forEach( function(z){ all.push( z.value ); } );
     }
     return all;
 }

 if ( typeof( gc ) == "undefined" ){
     gc = function(){
     }
 }


 Math.sigFig = function( x , N ){
     if ( ! N ){
         N = 3;
     }
     var p = Math.pow( 10, N - Math.ceil( Math.log( Math.abs(x) ) / Math.log( 10 )) );
     return Math.round(x*p)/p;
 }
	DB = function() {
	}

	print = function(msg) {
	//console.log(msg);
	}


	friendlyEqual = function( a , b ){
	if ( a == b )
	return true;

	if ( tojson( a ) == tojson( b ) )
	return true;

	return false;
	}


	doassert = function( msg ){
	print( "assert: " + msg );
	throw msg;
	}

	assert = function( b , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( b )
	return;

	doassert( "assert failed : " + msg );
	}

	assert.eq = function( a , b , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( a == b )
	return;

	if ( ( a != null && b != null ) && friendlyEqual( a , b ) )
	return;

	doassert( "[" + tojson( a ) + "] != [" + tojson( b ) + "] are not equal : " + msg );
	}

	assert.neq = function( a , b , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );
	if ( a != b )
	return;

	doassert( "[" + a + "] != [" + b + "] are equal : " + msg );
	}

	assert.soon = function( f, msg, timeout, interval ) {
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	var start = new Date();
	timeout = timeout \|\| 30000;
	interval = interval \|\| 200;
	var last;
	while( 1 ) {

	if ( typeof( f ) == "string" ){
	if ( eval( f ) )
	return;
	}
	else {
	if ( f() )
	return;
	}

	if ( ( new Date() ).getTime() - start.getTime() > timeout )
	doassert( "assert.soon failed: " + f + ", msg:" + msg );
	sleep( interval );
	}
	}

	assert.throws = function( func , params , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );
	try {
	func.apply( null , params );
	}
	catch ( e ){
	return e;
	}

	doassert( "did not throw exception: " + msg );
	}

	assert.commandWorked = function( res , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( res.ok == 1 )
	return;

	doassert( "command failed: " + tojson( res ) + " : " + msg );
	}

	assert.commandFailed = function( res , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( res.ok == 0 )
	return;

	doassert( "command worked when it should have failed: " + tojson( res ) + " : " + msg );
	}

	assert.isnull = function( what , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( what == null )
	return;

	doassert( "supposed to null (" + ( msg \|\| "" ) + ") was: " + tojson( what ) );
	}

	assert.lt = function( a , b , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( a < b )
	return;
	doassert( a + " is not less than " + b + " : " + msg );
	}

	assert.gt = function( a , b , msg ){
	if ( assert._debug && msg ) print( "in assert for: " + msg );

	if ( a > b )
	return;
	doassert( a + " is not greater than " + b + " : " + msg );
	}

	Object.extend = function( dst , src , deep ){
	for ( var k in src ){
	var v = src[k];
	if ( deep && typeof(v) == "object" ){
	v = Object.extend( typeof ( v.length ) == "number" ? [] : {} , v , true );
	}
	dst[k] = v;
	}
	return dst;
	}

	argumentsToArray = function( a ){
	var arr = [];
	for ( var i=0; i<a.length; i++ )
	arr[i] = a[i];
	return arr;
	}

	isString = function( x ){
	return typeof( x ) == "string";
	}

	isNumber = function(x){
	return typeof( x ) == "number";
	}

	isObject = function( x ){
	return typeof( x ) == "object";
	}

	String.prototype.trim = function() {
	return this.replace(/^\s+\|\s+$/g,"");
	}
	String.prototype.ltrim = function() {
	return this.replace(/^\s+/,"");
	}
	String.prototype.rtrim = function() {
	return this.replace(/\s+$/,"");
	}

	Date.timeFunc = function( theFunc , numTimes ){

	var start = new Date();

	numTimes = numTimes \|\| 1;
	for ( var i=0; i<numTimes; i++ ){
	theFunc.apply( null , argumentsToArray( arguments ).slice( 2 ) );
	}

	return (new Date()).getTime() - start.getTime();
	}

	Date.prototype.tojson = function(){
	return "\"" + this.toString() + "\"";
	}

	RegExp.prototype.tojson = RegExp.prototype.toString;

	Array.contains = function( a , x ){
	for ( var i=0; i<a.length; i++ ){
	if ( a[i] == x )
	return true;
	}
	return false;
	}

	Array.unique = function( a ){
	var u = [];
	for ( var i=0; i<a.length; i++){
	var o = a[i];
	if ( ! Array.contains( u , o ) ){
	u.push( o );
	}
	}
	return u;
	}

	Array.shuffle = function( arr ){
	for ( var i=0; i<arr.length-1; i++ ){
	var pos = i+Math.floor(Math.random()*(arr.length-i));
	var save = arr[i];
	arr[i] = arr[pos];
	arr[pos] = save;
	}
	return arr;
	}


	Array.tojson = function( a , indent , x , html){
	if (!indent)
	indent = "";
	var spacer = "";
	if(html) {
	spacer = "<br/>";
	indent = "   "
	}

	var s = spacer + "[ " + spacer;
	indent += " ";
	for ( var i=0; i<a.length; i++){
	s += indent + tojson( a[i], indent );
	if ( i < a.length - 1 ){
	s += "," + spacer;
	}
	}
	if ( a.length == 0 ) {
	s += indent;
	}

	indent = indent.substring(1);
	s += spacer + " "+"]";
	return s;
	}

	Array.fetchRefs = function( arr , coll ){
	var n = [];
	for ( var i=0; i<arr.length; i ++){
	var z = arr[i];
	if ( coll && coll != z.getCollection() )
	continue;
	n.push( z.fetch() );
	}

	return n;
	}

	Array.sum = function( arr ){
	if ( arr.length == 0 )
	return null;
	var s = arr[0];
	for ( var i=1; i<arr.length; i++ )
	s += arr[i];
	return s;
	}

	Array.avg = function( arr ){
	if ( arr.length == 0 )
	return null;
	return Array.sum( arr ) / arr.length;
	}

	Array.stdDev = function( arr ){
	var avg = Array.avg( arr );
	var sum = 0;

	for ( var i=0; i<arr.length; i++ ){
	sum += Math.pow( arr[i] - avg , 2 );
	}

	return Math.sqrt( sum / arr.length );
	}

	if ( ! ObjectId.prototype )
	ObjectId.prototype = {}

	ObjectId.prototype.toString = function(){
	return this.str;
	}

	ObjectId.prototype.tojson = function(){
	return "ObjectId(\"" + this.str + "\")";
	}

	ObjectId.prototype.isObjectId = true;

	tojson = function( x, indent , nolint , html){
	if ( x == null )
	return "null";

	if ( x == undefined )
	return "undefined";

	if (!indent)
	indent = "";

	switch ( typeof x ){

	case "string": {
	var s = "\"";
	for ( var i=0; i<x.length; i++ ){
	if ( x[i] == '"' ){
	s += "\\\"";
	}
	else
	s += x[i];
	}
	return s + "\"";
	}

	case "number":
	case "boolean":
	return "" + x;

	case "object":{
	var s = tojsonObject( x, indent , nolint , html);
	if ( ( nolint == null \|\| nolint == true ) && s.length < 80 && ( indent == null \|\| indent.length == 0 ) ){
	s = s.replace( /[\s\r\n ]+/gm , " " );
	}
	return s;
	}

	case "function":
	return x.toString();


	default:
	throw "tojson can't handle type " + ( typeof x );
	}

	}

	tojsonObject = function( x, indent , nolint , html){
	if(html) {
	var lineEnding = "<br/>";
	var tabSpace = " ";
	}
	else {
	var lineEnding = nolint ? " " : "\n";
	var tabSpace = nolint ? "" : "\t";
	}

	assert.eq( ( typeof x ) , "object" , "tojsonObject needs object, not [" + ( typeof x ) + "]" );

	if (!indent)
	indent = "";

	if ( x.hasOwnProperty("__str__")) {
	return x.__str__();
	}

	if ( typeof( x.tojson ) == "function" && x.tojson != tojson ) {
	return x.tojson(indent,nolint,html);
	}

	if ( typeof( x.constructor.tojson ) == "function" && x.constructor.tojson != tojson ) {
	return x.constructor.tojson( x, indent , nolint, html );
	}

	if ( x.toString() == "[object MaxKey]" )
	return "{ $maxKey : 1 }";
	if ( x.toString() == "[object MinKey]" )
	return "{ $minKey : 1 }";

	var s = "{" + lineEnding;

	// push one level of indent
	indent += tabSpace;

	var total = 0;
	for ( var k in x ) total++;
	if ( total == 0 ) {
	s += indent + lineEnding;
	}

	var keys = x;
	if ( typeof( x._simpleKeys ) == "function" )
	keys = x._simpleKeys();
	var num = 1;
	for ( var k in keys ){
	var val = x[k];

	s += indent + "\"" + k + "\" : " + tojson( val, indent , nolint );
	if (num != total) {
	s += ",";
	num++;
	}
	s += lineEnding;
	}

	// pop one level of indent
	indent = indent.substring(1);
	return s + indent + "}";
	}

	shellPrint = function( x ){
	it = x;
	if ( x != undefined )
	shellPrintHelper( x );
	}

	printjson = function(x){
	print( tojson( x ) );
	}

	shellPrintHelper = function( x ){

	if ( typeof( x ) == "undefined" ){

	return;
	}

	if ( x == null ){
	print( "null" );
	return;
	}

	if ( typeof x != "object" )
	return print( x );

	var p = x.shellPrint;
	if ( typeof p == "function" )
	return x.shellPrint();

	var p = x.tojson;
	if ( typeof p == "function" )
	print( x.tojson() );
	else
	print( tojson( x ) );
	}

	shellHelper = function( command , rest , shouldPrint ){
	command = command.trim();
	var args = rest.trim().replace(/;$/,"").split( "\s+" );

	if ( ! shellHelper[command] )
	throw "no command [" + command + "]";

	var res = shellHelper[command].apply( null , args );
	if ( shouldPrint ){
	shellPrintHelper( res );
	}
	return res;
	}

	help = shellHelper.help = function(){
	print( "HELP" );
	print( "\t" + "show dbs show database names");
	print( "\t" + "show collections show collections in current database");
	print( "\t" + "show users show users in current database");
	print( "\t" + "show profile show most recent system.profile entries with time >= 1ms");
	print( "\t" + "use <db name> set curent database to <db name>" );
	print( "\t" + "db.help() help on DB methods");
	print( "\t" + "db.foo.help() help on collection methods");
	print( "\t" + "db.foo.find() list objects in collection foo" );
	print( "\t" + "db.foo.find( { a : 1 } ) list objects in foo where a == 1" );
	print( "\t" + "it result of the last line evaluated; use to further iterate");
	}

	if ( typeof( Map ) == "undefined" ){
	Map = function(){
	this._data = {};
	}
	}

	Map.hash = function( val ){
	if ( ! val )
	return val;

	switch ( typeof( val ) ){
	case 'string':
	case 'number':
	case 'date':
	return val.toString();
	case 'object':
	case 'array':
	var s = "";
	for ( var k in val ){
	s += k + val[k];
	}
	return s;
	}

	throw "can't hash : " + typeof( val );
	}

	Map.prototype.put = function( key , value ){
	var o = this._get( key );
	var old = o.value;
	o.value = value;
	return old;
	}

	Map.prototype.get = function( key ){
	return this._get( key ).value;
	}

	Map.prototype._get = function( key ){
	var h = Map.hash( key );
	var a = this._data[h];
	if ( ! a ){
	a = [];
	this._data[h] = a;
	}

	for ( var i=0; i<a.length; i++ ){
	if ( friendlyEqual( key , a[i].key ) ){
	return a[i];
	}
	}
	var o = { key : key , value : null };
	a.push( o );
	return o;
	}

	Map.prototype.values = function(){
	var all = [];
	for ( var k in this._data ){
	this._data[k].forEach( function(z){ all.push( z.value ); } );
	}
	return all;
	}

	if ( typeof( gc ) == "undefined" ){
	gc = function(){
	}
	}


	Math.sigFig = function( x , N ){
	if ( ! N ){
	N = 3;
	}
	var p = Math.pow( 10, N - Math.ceil( Math.log( Math.abs(x) ) / Math.log( 10 )) );
	return Math.round(x*p)/p;
	}