Added new (clean) yii boilerplate
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127
framework/web/helpers/CJavaScript.php
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127
framework/web/helpers/CJavaScript.php
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<?php
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/**
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* CJavaScript helper class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CJavaScript is a helper class containing JavaScript-related handling functions.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.web.helpers
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* @since 1.0
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*/
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class CJavaScript
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{
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/**
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* Quotes a javascript string.
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* After processing, the string can be safely enclosed within a pair of
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* quotation marks and serve as a javascript string.
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* @param string $js string to be quoted
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* @param boolean $forUrl whether this string is used as a URL
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* @return string the quoted string
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*/
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public static function quote($js,$forUrl=false)
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{
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if($forUrl)
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return strtr($js,array('%'=>'%25',"\t"=>'\t',"\n"=>'\n',"\r"=>'\r','"'=>'\"','\''=>'\\\'','\\'=>'\\\\','</'=>'<\/'));
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else
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return strtr($js,array("\t"=>'\t',"\n"=>'\n',"\r"=>'\r','"'=>'\"','\''=>'\\\'','\\'=>'\\\\','</'=>'<\/'));
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}
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/**
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* Encodes a PHP variable into javascript representation.
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*
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* Example:
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* <pre>
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* $options=array('key1'=>true,'key2'=>123,'key3'=>'value');
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* echo CJavaScript::encode($options);
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* // The following javascript code would be generated:
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* // {'key1':true,'key2':123,'key3':'value'}
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* </pre>
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*
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* For highly complex data structures use {@link jsonEncode} and {@link jsonDecode}
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* to serialize and unserialize.
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*
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* If you are encoding user input, make sure $safe is set to true.
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*
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* @param mixed $value PHP variable to be encoded
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* @param boolean $safe If true, 'js:' will not be allowed. In case of
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* wrapping code with {@link CJavaScriptExpression} JavaScript expression
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* will stay as is no matter what value this parameter is set to.
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* Default is false. This parameter is available since 1.1.11.
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* @return string the encoded string
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*/
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public static function encode($value,$safe=false)
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{
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if(is_string($value))
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{
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if(strpos($value,'js:')===0 && $safe===false)
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return substr($value,3);
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else
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return "'".self::quote($value)."'";
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}
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elseif($value===null)
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return 'null';
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elseif(is_bool($value))
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return $value?'true':'false';
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elseif(is_integer($value))
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return "$value";
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elseif(is_float($value))
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{
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if($value===-INF)
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return 'Number.NEGATIVE_INFINITY';
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elseif($value===INF)
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return 'Number.POSITIVE_INFINITY';
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else
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return str_replace(',','.',(float)$value); // locale-independent representation
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}
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elseif($value instanceof CJavaScriptExpression)
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return $value->__toString();
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elseif(is_object($value))
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return self::encode(get_object_vars($value),$safe);
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elseif(is_array($value))
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{
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$es=array();
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if(($n=count($value))>0 && array_keys($value)!==range(0,$n-1))
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{
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foreach($value as $k=>$v)
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$es[]="'".self::quote($k)."':".self::encode($v,$safe);
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return '{'.implode(',',$es).'}';
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}
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else
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{
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foreach($value as $v)
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$es[]=self::encode($v,$safe);
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return '['.implode(',',$es).']';
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}
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}
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else
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return '';
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}
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/**
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* Returns the JSON representation of the PHP data.
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* @param mixed $data the data to be encoded
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* @return string the JSON representation of the PHP data.
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*/
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public static function jsonEncode($data)
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{
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return CJSON::encode($data);
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}
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/**
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* Decodes a JSON string.
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* @param string $data the data to be decoded
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* @param boolean $useArray whether to use associative array to represent object data
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* @return mixed the decoded PHP data
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*/
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public static function jsonDecode($data,$useArray=true)
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{
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return CJSON::decode($data,$useArray);
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}
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}
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