<?php

/**

* Smarty Internal Plugin Resource Extends

*

* @package Smarty

* @subpackage TemplateResources

* @author Uwe Tews

* @author Rodney Rehm

*/

/**

* Smarty Internal Plugin Resource Extends

*

* Implements the file system as resource for Smarty which {extend}s a chain of template files templates

*

* @package Smarty

* @subpackage TemplateResources

*/

class Smarty_Internal_Resource_Extends extends Smarty_Resource {

    /**

    * mbstring.overload flag

    *

    * @var int

    */

    public $mbstring_overload = 0;

    /**

    * populate Source Object with meta data from Resource

    *

    * @param Smarty_Template_Source   $source    source object

    * @param Smarty_Internal_Template $_template template object

    */

    public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template=null)

    {

        $uid = '';

        $sources = array();

        $components = explode('|', $source->name);

        $exists = true;

        foreach ($components as $component) {

            $s = Smarty_Resource::source(null, $source->smarty, $component);

            if ($s->type == 'php') {

                throw new SmartyException("Resource type {$s->type} cannot be used with the extends resource type");

            }

            $sources[$s->uid] = $s;

            $uid .= $s->filepath;

            if ($_template && $_template->smarty->compile_check) {

                $exists = $exists && $s->exists;

            }

        }

        $source->components = $sources;

        $source->filepath = $s->filepath;

        $source->uid = sha1($uid);

        if ($_template && $_template->smarty->compile_check) {

            $source->timestamp = $s->timestamp;

            $source->exists = $exists;

        }

        // need the template at getContent()

        $source->template = $_template;

    }

    /**

    * populate Source Object with timestamp and exists from Resource

    *

    * @param Smarty_Template_Source $source source object

    */

    public function populateTimestamp(Smarty_Template_Source $source)

    {

        $source->exists = true;

        foreach ($source->components as $s) {

            $source->exists = $source->exists && $s->exists;

        }

        $source->timestamp = $s->timestamp;

    }

    /**

    * Load template's source from files into current template object

    *

    * @param Smarty_Template_Source $source source object

    * @return string template source

    * @throws SmartyException if source cannot be loaded

    */

    public function getContent(Smarty_Template_Source $source)

    {

        if (!$source->exists) {

            throw new SmartyException("Unable to read template {$source->type} '{$source->name}'");

        }

        $this->mbstring_overload = ini_get('mbstring.func_overload') & 2;

        $_rdl = preg_quote($source->smarty->right_delimiter);

        $_ldl = preg_quote($source->smarty->left_delimiter);

        if (!$source->smarty->auto_literal) {

            $al = '\s*';

        } else {

            $al = '';

        }

        $_components = array_reverse($source->components);

        $_first = reset($_components);

        $_last = end($_components);

        foreach ($_components as $_component) {

            // register dependency

            if ($_component != $_first) {

                $source->template->properties['file_dependency'][$_component->uid] = array($_component->filepath, $_component->timestamp, $_component->type);

            }

            // read content

            $source->filepath = $_component->filepath;

            $_content = $_component->content;

            // extend sources

            if ($_component != $_last) {

                if (preg_match_all("!({$_ldl}{$al}block\s(.+?)\s*{$_rdl})!", $_content, $_open) !=

                preg_match_all("!({$_ldl}{$al}/block\s*{$_rdl})!", $_content, $_close)) {

                    throw new SmartyException("unmatched {block} {/block} pairs in template {$_component->type} '{$_component->name}'");

                }

                preg_match_all("!{$_ldl}{$al}block\s(.+?)\s*{$_rdl}|{$_ldl}{$al}/block\s*{$_rdl}|{$_ldl}\*([\S\s]*?)\*{$_rdl}!", $_content, $_result, PREG_OFFSET_CAPTURE);

                $_result_count = count($_result[0]);

                $_start = 0;

                while ($_start+1 < $_result_count) {

                    $_end = 0;

                    $_level = 1;

                    if (($this->mbstring_overload ? mb_substr($_result[0][$_start][0],0,mb_strlen($source->smarty->left_delimiter,'latin1')+1, 'latin1') : substr($_result[0][$_start][0],0,strlen($source->smarty->left_delimiter)+1)) == $source->smarty->left_delimiter.'*') {

                        $_start++;

                        continue;

                    }

                    while ($_level != 0) {

                        $_end++;

                        if (($this->mbstring_overload ? mb_substr($_result[0][$_start + $_end][0],0,mb_strlen($source->smarty->left_delimiter,'latin1')+1, 'latin1') : substr($_result[0][$_start + $_end][0],0,strlen($source->smarty->left_delimiter)+1)) == $source->smarty->left_delimiter.'*') {

                            continue;

                        }

                        if (!strpos($_result[0][$_start + $_end][0], '/')) {

                            $_level++;

                        } else {

                            $_level--;

                        }

                    }

                    $_block_content = str_replace($source->smarty->left_delimiter . '$smarty.block.parent' . $source->smarty->right_delimiter, '%%%%SMARTY_PARENT%%%%',

                    ($this->mbstring_overload ? mb_substr($_content, $_result[0][$_start][1] + mb_strlen($_result[0][$_start][0], 'latin1'), $_result[0][$_start + $_end][1] - $_result[0][$_start][1] - + mb_strlen($_result[0][$_start][0], 'latin1'), 'latin1') : 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], $source->template, $_component->filepath);

                    $_start = $_start + $_end + 1;

                }

            } else {

                return $_content;

            }

        }

    }

    /**

    * Determine basename for compiled filename

    *

    * @param Smarty_Template_Source $source source object

    * @return string resource's basename

    */

    public function getBasename(Smarty_Template_Source $source)

    {

        return str_replace(':', '.', basename($source->filepath));

    }

}

?>