Aural.inc in Advanced CSS/JS Aggregation 6

File

advagg_css_compress/css-compressor-3.x/src/lib/Combine/Aural.inc

<?php

/**
 * CSS Compressor [VERSION]
 * [DATE]
 * Corey Hart @ http://www.codenothing.com
 */
class CSSCompression_Combine_Aural {

  /**
   * Combine Patterns
   *
   * @class Control: Compression Controller
   * @class Combine: Combine Controller
   * @param (regex) raural: Aurual matching
   */
  private $Control;
  private $Combine;
  private $raural = "/(^|(?<!\\\\);)(cue|pause)-(before|after):(.*?)((?<!\\\\);|\$)/";

  /**
   * Stash a reference to the controller & combiner
   *
   * @param (class) control: CSSCompression Controller
   * @param (class) combine: CSSCompression Combiner
   */
  public function __construct(CSSCompression_Control $control, CSSCompression_Combine $combine) {
    $this->Control = $control;
    $this->Combine = $combine;
  }

  /**
   * Combines Aural properties (currently being depreciated in W3C Standards)
   *
   * @param (string) val: Rule Set
   */
  public function combine($val) {
    $storage = $this
      ->storage($val);
    $pos = 0;

    // Replace first occurance with it's prop, and remove all following occurances
    while (preg_match($this->raural, $val, $match, PREG_OFFSET_CAPTURE, $pos)) {
      $prop = $match[2][0];
      if (isset($storage[$prop])) {
        $colon = strlen($match[1][0]);
        $val = substr_replace($val, $storage[$prop], $match[0][1] + $colon, strlen($match[0][0]) - $colon);
        $pos = $match[0][1] + strlen($storage[$prop]) - $colon - 1;
        $storage[$prop] = '';
      }
      else {
        $pos = $match[0][1] + strlen($match[0][0]) - 1;
      }
    }

    // Return converted val
    return $val;
  }

  /**
   * Builds a storage object for iteration
   *
   * @param (string) val: Rule Set
   */
  private function storage($val) {
    $storage = array();

    // Find all possible occurences and build the replacement
    $pos = 0;
    while (preg_match($this->raural, $val, $match, PREG_OFFSET_CAPTURE, $pos)) {
      if (!isset($storage[$match[2][0]])) {
        $storage[$match[2][0]] = array(
          $match[3][0] => $match[4][0],
        );
      }

      // Override double written properties
      $storage[$match[2][0]][$match[3][0]] = $match[4][0];
      $pos = $match[0][1] + strlen($match[0][0]) - 1;
    }

    // Go through each tag for possible combination
    foreach ($storage as $tag => $arr) {

      // All three have to be defined
      if (count($arr) == 2 && !$this->Combine
        ->checkUncombinables($arr)) {
        $storage[$tag] = "{$tag}:" . $arr['before'] . ' ' . $arr['after'] . ';';
      }
      else {
        unset($storage[$tag]);
      }
    }
    return $storage;
  }

  /**
   * Access to private methods for testing
   *
   * @param (string) method: Method to be called
   * @param (array) args: Array of paramters to be passed in
   */
  public function access($method, $args) {
    if (method_exists($this, $method)) {
      return call_user_func_array(array(
        $this,
        $method,
      ), $args);
    }
    else {
      throw new CSSCompression_Exception("Unknown method in Aural Class - " . $method);
    }
  }

}

Classes

Name	Description
CSSCompression_Combine_Aural	CSS Compressor [VERSION] [DATE] Corey Hart @ http://www.codenothing.com