class CSSCompression_Combine_Font in Advanced CSS/JS Aggregation 7

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

Hierarchy

• class \CSSCompression_Combine_Font

File

advagg_css_compress/css-compressor-3.x/src/lib/Combine/Font.inc, line 8

class CSSCompression_Combine_Font {

  /**
   * Combine Patterns
   *
   * @class Control: Compression Controller
   * @class Combine: Combine Controller
   * @param (regex) rfont: Font matching
   * @param (array) groupings: Set of font combinationals
   */
  private $Control;
  private $Combine;
  private $rfont = "/(^|(?<!\\\\);)(font|line)-(style|variant|weight|size|height|family):(.*?)((?<!\\\\);|\$)/";
  private $groupings = array(
    array(
      'font-style',
      'font-variant',
      'font-weight',
      'size/height',
      'font-family',
    ),
    array(
      'font-style',
      'font-variant',
      'font-weight',
      'font-size',
      'font-family',
    ),
    array(
      'font-style',
      'font-variant',
      'size/height',
      'font-family',
    ),
    array(
      'font-style',
      'font-variant',
      'font-size',
      'font-family',
    ),
    array(
      'font-style',
      'font-weight',
      'size/height',
      'font-family',
    ),
    array(
      'font-style',
      'font-weight',
      'font-size',
      'font-family',
    ),
    array(
      'font-variant',
      'font-weight',
      'size/height',
      'font-family',
    ),
    array(
      'font-variant',
      'font-weight',
      'font-size',
      'font-family',
    ),
    array(
      'font-weight',
      'size/height',
      'font-family',
    ),
    array(
      'font-weight',
      'font-size',
      'font-family',
    ),
    array(
      'font-variant',
      'size/height',
      'font-family',
    ),
    array(
      'font-variant',
      'font-size',
      'font-family',
    ),
    array(
      'font-style',
      'size/height',
      'font-family',
    ),
    array(
      'font-style',
      'font-size',
      'font-family',
    ),
    array(
      'size/height',
      'font-family',
    ),
    array(
      'font-size',
      'font-family',
    ),
  );

  /**
   * 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 multiple font-definitions into single definition
   *
   * @param (string) val: Rule Set
   */
  public function combine($val) {
    $storage = $this
      ->storage($val);

    // Loop through each property check and see if they can be replaced
    foreach ($this->groupings as $props) {
      if ($replace = $this->Combine
        ->searchDefinitions('font', $storage, $props)) {
        break;
      }
    }

    // If replacement string found, run it on all declarations
    if ($replace) {
      $pos = 0;
      while (preg_match($this->rfont, $val, $match, PREG_OFFSET_CAPTURE, $pos)) {
        if (!isset($storage['line-height']) && stripos($match[0][0], 'line-height') === 0) {
          $pos = $match[0][1] + strlen($match[0][0]) - 1;
          continue;
        }
        $colon = strlen($match[1][0]);
        $val = substr_replace($val, $replace, $match[0][1] + $colon, strlen($match[0][0]) - $colon);
        $pos = $match[0][1] + strlen($replace) - $colon - 1;
        $replace = '';
      }
    }

    // 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->rfont, $val, $match, PREG_OFFSET_CAPTURE, $pos)) {
      $storage[$match[2][0] . '-' . $match[3][0]] = $match[4][0];
      $pos = $match[0][1] + strlen($match[0][0]) - 1;
    }

    // Combine font-size & line-height if possible
    if (isset($storage['font-size']) && isset($storage['line-height'])) {
      $storage['size/height'] = $storage['font-size'] . '/' . $storage['line-height'];
      unset($storage['font-size'], $storage['line-height']);
    }
    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 Font Class - " . $method);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
CSSCompression_Combine_Font::$Combine	private	property
CSSCompression_Combine_Font::$Control	private	property	Combine Patterns
CSSCompression_Combine_Font::$groupings	private	property
CSSCompression_Combine_Font::$rfont	private	property
CSSCompression_Combine_Font::access	public	function	Access to private methods for testing
CSSCompression_Combine_Font::combine	public	function	Combines multiple font-definitions into single definition
CSSCompression_Combine_Font::storage	private	function	Builds a storage object for iteration
CSSCompression_Combine_Font::__construct	public	function	Stash a reference to the controller & combiner