Subversion Repositories web.creative

<?php namespace ProcessWire;

/**
 * FileCompilerTags (example FileCompiler module)
 * 
 * Enables {var} or {var.property} variables in markup sections of a file. 
 * Can be used with any API variable.
 *
 * @property string $openTag
 * @property string $closeTag
 * 
 */

class FileCompilerTags extends FileCompilerModule implements ConfigurableModule {

  public static function getModuleInfo() {
    return array(
      'title' => 'Tags File Compiler',
      'version' => 1,
      'summary' => 'Enables {var} or {var.property} variables in markup sections of a file. Can be used with any API variable.',
    );
  } 
  
  public function __construct() {
    $this->set('openTag', '{');
    $this->set('closeTag', '}');
    parent::__construct();
  }
  
  /**
   * Compile a section of markup
   *
   * @param string $data
   * @return string
   *
   */
  public function compileMarkup($data) {

    $markup =& $data;
    if(strpos($markup, $this->openTag) === false || strpos($markup, $this->closeTag) === false) return $markup;

    $replacements = array();
    $openTag = preg_quote($this->openTag, '#');
    $closeTag = preg_quote($this->closeTag, '#');
    $regex = '#' . $openTag . '([_a-zA-Z](?:[_.|a-zA-Z0-9]|->)+)' . $closeTag . '#';

    if(!preg_match_all($regex, $markup, $matches)) return $markup;
    
    foreach($matches[1] as $key => $tag) {
      
      $full = $matches[0][$key];
      if(isset($replacements[$full])) continue;

      if(strpos($tag, '->') !== false) {
        $tag = str_replace('->', '.', $tag);
      }

      if(strpos($tag, '.') !== false) {
        list($varName, $theRest) = explode('.', $tag, 2);
      } else {
        $varName = $tag;
        $theRest = '';
      }

      $theRestOR = str_replace('|', '_OR_', $theRest);

      if(empty($varName)) continue;

      // allow for use of locally scope variable, or attempt to pull from $page if not locally scoped
      $replacement = "<" . "?php " .
        "if(isset(\$$varName)) { " .
          "if(\$$varName instanceof Page) { " .
            "echo " . ($theRest ? "\${$varName}->getMarkup('{" . $theRest . "}');" : "\$$varName; ") .
          "} else {" .
            "echo \$$varName" . ($theRest ? "->" . str_replace('.', '->', $theRestOR) : "") . "; " .
          "}" .
        "} else if(\\ProcessWire\\wire('$varName') !== null) { " .
          "if(\\ProcessWire\\wire('$varName') instanceof Page) { " .
            "echo " . ($theRest ? "\\ProcessWire\\wire('$varName')->getMarkup('{" . $theRest . "}');" : "\\ProcessWire\\wire('$varName'); ") .
          "} else {" .
            "echo \\ProcessWire\\wire('$varName')" . ($theRest ? "->" . str_replace('.', '->', $theRestOR) : "") . "; " .
          "}" .
        "} else if(\\ProcessWire\\wire('page')->get('$varName') !== null) { " .
          "echo \\ProcessWire\\wire('page')->getMarkup('{" . $tag . "}'); " .
        "} else { " .
          "echo '" . $matches[0][$key] . "';" .
        "} ?" . ">";
      
      if(!strlen(__NAMESPACE__)) {
        $replacement = str_replace("\\ProcessWire\\", "", $replacement);
      }

      $replacements[$full] = $replacement;
    }
    $markup = str_replace(array_keys($replacements), array_values($replacements), $markup);

    return $markup;
  }
  
  public function getModuleConfigInputfields(InputfieldWrapper $inputfields) {
    
    parent::getModuleConfigInputfields($inputfields);
    
    $f = $this->wire('modules')->get('InputfieldText');
    $f->attr('name', 'openTag');
    $f->label = $this->_('Open Tag character(s)');
    $f->attr('value', $this->openTag);
    $f->columnWidth = 50;
    $inputfields->add($f);
    
    $f = $this->wire('modules')->get('InputfieldText');
    $f->attr('name', 'closeTag');
    $f->label = $this->_('Close Tag character(s)');
    $f->attr('value', $this->closeTag);
    $f->columnWidth = 50;
    $inputfields->add($f);
  }
}