text: <?php
  
  /**
  * Smarty Internal Plugin Compile extend
  *
  * Compiles the {extends} tag
  *
  * @package Smarty
  * @subpackage Compiler
  * @author Uwe Tews
  */
  
  /**
  * Smarty Internal Plugin Compile extend Class
  *
  * @package Smarty
  * @subpackage Compiler
  */
  class Smarty_Internal_Compile_Extends extends Smarty_Internal_CompileBase {
  
      /**
      * Attribute definition: Overwrites base class.
      *
      * @var array
      * @see Smarty_Internal_CompileBase
      */
      public $required_attributes = array('file');
      /**
      * Attribute definition: Overwrites base class.
      *
      * @var array
      * @see Smarty_Internal_CompileBase
      */
      public $shorttag_order = array('file');
  
      /**
      * Compiles code for the {extends} tag
      *
      * @param array  $args     array with attributes from parser
      * @param object $compiler compiler object
      * @return string compiled code
      */
      public function compile($args, $compiler)
      {
          static $_is_stringy = array('string' => true, 'eval' => true);
          $this->_rdl = preg_quote($compiler->smarty->right_delimiter);
          $this->_ldl = preg_quote($compiler->smarty->left_delimiter);
          $filepath = $compiler->template->source->filepath;
          // check and get attributes
          $_attr = $this->getAttributes($compiler, $args);
          if ($_attr['nocache'] === true) {
              $compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);
          }
  
          $_smarty_tpl = $compiler->template;
          $include_file = null;
          if (strpos($_attr['file'], '$_tmp') !== false) {
              $compiler->trigger_template_error('illegal value for file attribute', $compiler->lex->taglineno);
          }
          eval('$include_file = ' . $_attr['file'] . ';');
          // create template object
          $_template = new $compiler->smarty->template_class($include_file, $compiler->smarty, $compiler->template);
          // save file dependency
          if (isset($_is_stringy[$_template->source->type])) {
              $template_sha1 = sha1($include_file);
          } else {
              $template_sha1 = sha1($_template->source->filepath);
          }
          if (isset($compiler->template->properties['file_dependency'][$template_sha1])) {
              $compiler->trigger_template_error("illegal recursive call of \"{$include_file}\"", $compiler->lex->line - 1);
          }
          $compiler->template->properties['file_dependency'][$template_sha1] = array($_template->source->filepath, $_template->source->timestamp, $_template->source->type);
          $_content = substr($compiler->template->source->content, $compiler->lex->counter - 1);
          if (preg_match_all("!({$this->_ldl}block\s(.+?){$this->_rdl})!", $_content, $s) !=
          preg_match_all("!({$this->_ldl}/block{$this->_rdl})!", $_content, $c)) {
              $compiler->trigger_template_error('unmatched {block} {/block} pairs');
          }
          preg_match_all("!{$this->_ldl}block\s(.+?){$this->_rdl}|{$this->_ldl}/block{$this->_rdl}|{$this->_ldl}\*([\S\s]*?)\*{$this->_rdl}!", $_content, $_result, PREG_OFFSET_CAPTURE);
          $_result_count = count($_result[0]);
          $_start = 0;
          while ($_start+1 < $_result_count) {
              $_end = 0;
              $_level = 1;
              if (substr($_result[0][$_start][0],0,strlen($compiler->smarty->left_delimiter)+1) == $compiler->smarty->left_delimiter.'*') {
                  $_start++;
                  continue;
              }
              while ($_level != 0) {
                  $_end++;
                  if (substr($_result[0][$_start + $_end][0],0,strlen($compiler->smarty->left_delimiter)+1) == $compiler->smarty->left_delimiter.'*') {
                      continue;
                  }
                  if (!strpos($_result[0][$_start + $_end][0], '/')) {
                      $_level++;
                  } else {
                      $_level--;
                  }
              }
              $_block_content = str_replace($compiler->smarty->left_delimiter . '$smarty.block.parent' . $compiler->smarty->right_delimiter, '%%%%SMARTY_PARENT%%%%',
              substr($_content, $_result[0][$_start][1] + strlen($_result[0][$_start][0]), $_result[0][$_start + $_end][1] - $_result[0][$_start][1] - + strlen($_result[0][$_start][0])));
              Smarty_Internal_Compile_Block::saveBlockData($_block_content, $_result[0][$_start][0], $compiler->template, $filepath);
              $_start = $_start + $_end + 1;
          }
          if ($_template->source->type == 'extends') {
              $_template->block_data = $compiler->template->block_data;
          }
          $compiler->template->source->content = $_template->source->content;
          if ($_template->source->type == 'extends') {
              $compiler->template->block_data = $_template->block_data;
              foreach ($_template->source->components as $key => $component) {
                  $compiler->template->properties['file_dependency'][$key] = array($component->filepath, $component->timestamp, $component->type);
              }
          }
          $compiler->template->source->filepath = $_template->source->filepath;
          $compiler->abort_and_recompile = true;
          return '';
      }
  
  }
  
  ?>