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   1  <?php
   2  
   3  /**
   4   * Url
   5   *
   6   * @package Less
   7   * @subpackage tree
   8   */
   9  class Less_Tree_Url extends Less_Tree{
  10  
  11      public $attrs;
  12      public $value;
  13      public $currentFileInfo;
  14      public $isEvald;
  15      public $type = 'Url';
  16  
  17  	public function __construct($value, $currentFileInfo = null, $isEvald = null){
  18          $this->value = $value;
  19          $this->currentFileInfo = $currentFileInfo;
  20          $this->isEvald = $isEvald;
  21      }
  22  
  23      public function accept( $visitor ){
  24          $this->value = $visitor->visitObj($this->value);
  25      }
  26  
  27      /**
  28       * @see Less_Tree::genCSS
  29       */
  30      public function genCSS( $output ){
  31          $output->add( 'url(' );
  32          $this->value->genCSS( $output );
  33          $output->add( ')' );
  34      }
  35  
  36      /**
  37       * @param Less_Functions $ctx
  38       */
  39  	public function compile($ctx){
  40          $val = $this->value->compile($ctx);
  41  
  42          if( !$this->isEvald ){
  43              // Add the base path if the URL is relative
  44              if( Less_Parser::$options['relativeUrls']
  45                  && $this->currentFileInfo
  46                  && is_string($val->value)
  47                  && Less_Environment::isPathRelative($val->value)
  48              ){
  49                  $rootpath = $this->currentFileInfo['uri_root'];
  50                  if ( !$val->quote ){
  51                      $rootpath = preg_replace('/[\(\)\'"\s]/', '\\$1', $rootpath );
  52                  }
  53                  $val->value = $rootpath . $val->value;
  54              }
  55  
  56              $val->value = Less_Environment::normalizePath( $val->value);
  57          }
  58  
  59          // Add cache buster if enabled
  60          if( Less_Parser::$options['urlArgs'] ){
  61              if( !preg_match('/^\s*data:/',$val->value) ){
  62                  $delimiter = strpos($val->value,'?') === false ? '?' : '&';
  63                  $urlArgs = $delimiter . Less_Parser::$options['urlArgs'];
  64                  $hash_pos = strpos($val->value,'#');
  65                  if( $hash_pos !== false ){
  66                      $val->value = substr_replace($val->value,$urlArgs, $hash_pos, 0);
  67                  } else {
  68                      $val->value .= $urlArgs;
  69                  }
  70              }
  71          }
  72  
  73          return new Less_Tree_URL($val, $this->currentFileInfo, true);
  74      }
  75  
  76  }