Файл: framework/web/helpers/CJavaScript.php
Строк: 132
<?php
/**
* CJavaScript helper class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright 2008-2013 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CJavaScript is a helper class containing JavaScript-related handling functions.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package system.web.helpers
* @since 1.0
*/
class CJavaScript
{
/**
* Quotes a javascript string.
* After processing, the string can be safely enclosed within a pair of
* quotation marks and serve as a javascript string.
* @param string $js string to be quoted
* @param boolean $forUrl whether this string is used as a URL
* @return string the quoted string
*/
public static function quote($js,$forUrl=false)
{
Yii::import('system.vendors.zend-escaper.Escaper');
$escaper=new Escaper(Yii::app()->charset);
if($forUrl)
return $escaper->escapeUrl($js);
else
return $escaper->escapeJs($js);
}
/**
* Encodes a PHP variable into javascript representation.
*
* Example:
* <pre>
* $options=array('key1'=>true,'key2'=>123,'key3'=>'value');
* echo CJavaScript::encode($options);
* // The following javascript code would be generated:
* // {'key1':true,'key2':123,'key3':'value'}
* </pre>
*
* For highly complex data structures use {@link jsonEncode} and {@link jsonDecode}
* to serialize and unserialize.
*
* If you are encoding user input, make sure $safe is set to true.
*
* @param mixed $value PHP variable to be encoded
* @param boolean $safe If true, 'js:' will not be allowed. In case of
* wrapping code with {@link CJavaScriptExpression} JavaScript expression
* will stay as is no matter what value this parameter is set to.
* Default is false. This parameter is available since 1.1.11.
* @return string the encoded string
*/
public static function encode($value,$safe=false)
{
if(is_string($value))
{
if(strpos($value,'js:')===0 && $safe===false)
return substr($value,3);
else
return "'".self::quote($value)."'";
}
elseif($value===null)
return 'null';
elseif(is_bool($value))
return $value?'true':'false';
elseif(is_integer($value))
return "$value";
elseif(is_float($value))
{
if($value===-INF)
return 'Number.NEGATIVE_INFINITY';
elseif($value===INF)
return 'Number.POSITIVE_INFINITY';
else
return str_replace(',','.',(float)$value); // locale-independent representation
}
elseif($value instanceof CJavaScriptExpression)
return $value->__toString();
elseif(is_object($value))
return self::encode(get_object_vars($value),$safe);
elseif(is_array($value))
{
$es=array();
if(($n=count($value))>0 && array_keys($value)!==range(0,$n-1))
{
foreach($value as $k=>$v)
$es[]="'".self::quote($k)."':".self::encode($v,$safe);
return '{'.implode(',',$es).'}';
}
else
{
foreach($value as $v)
$es[]=self::encode($v,$safe);
return '['.implode(',',$es).']';
}
}
else
return '';
}
/**
* Returns the JSON representation of the PHP data.
* @param mixed $data the data to be encoded
* @return string the JSON representation of the PHP data.
*/
public static function jsonEncode($data)
{
return CJSON::encode($data);
}
/**
* Decodes a JSON string.
* @param string $data the data to be decoded
* @param boolean $useArray whether to use associative array to represent object data
* @return mixed the decoded PHP data
*/
public static function jsonDecode($data,$useArray=true)
{
return CJSON::decode($data,$useArray);
}
}