smarty/libs/sysplugins/smarty_internal_compile_extends.php

<?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)
    {
        $this->_rdl = preg_quote($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, $compiler->template);
        // save file dependency
        if (in_array($_template->source->type, array('eval', 'string'))) {
            $template_sha1 = sha1($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 '';
    }

}

?>