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   1  <?php
   2  /**
   3  * Smarty Internal Plugin Resource Extends
   4  *
   5  * @package Smarty
   6  * @subpackage TemplateResources
   7  * @author Uwe Tews
   8  * @author Rodney Rehm
   9  */
  10  
  11  /**
  12  * Smarty Internal Plugin Resource Extends
  13  *
  14  * Implements the file system as resource for Smarty which {extend}s a chain of template files templates
  15  *
  16  * @package Smarty
  17  * @subpackage TemplateResources
  18  */
  19  class Smarty_Internal_Resource_Extends extends Smarty_Resource {
  20  
  21      /**
  22      * populate Source Object with meta data from Resource
  23      *
  24      * @param Smarty_Template_Source   $source    source object
  25      * @param Smarty_Internal_Template $_template template object
  26      */
  27      public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template=null)
  28      {
  29          $uid = '';
  30          $sources = array();
  31          $components = explode('|', $source->name);
  32          $exists = true;
  33          foreach ($components as $component) {
  34              $s = Smarty_Resource::source(null, $source->smarty, $component);
  35              if ($s->type == 'php') {
  36                  throw new SmartyException("Resource type {$s->type} cannot be used with the extends resource type");
  37              }
  38              $sources[$s->uid] = $s;
  39              $uid .= $s->filepath;
  40              if ($_template && $_template->smarty->compile_check) {
  41                  $exists == $exists && $s->exists;
  42              }
  43          }
  44          $source->components = $sources;
  45          $source->filepath = $s->filepath;
  46          $source->uid = sha1($uid);
  47          if ($_template && $_template->smarty->compile_check) {
  48              $source->timestamp = $s->timestamp;
  49              $source->exists = $exists;
  50          }
  51          // need the template at getContent()
  52          $source->template = $_template;
  53      }
  54  
  55      /**
  56      * populate Source Object with timestamp and exists from Resource
  57      *
  58      * @param Smarty_Template_Source $source source object
  59      */
  60      public function populateTimestamp(Smarty_Template_Source $source)
  61      {
  62          $source->exists = true;
  63          foreach ($source->components as $s) {
  64              $source->exists == $source->exists && $s->exists;
  65          }
  66          $source->timestamp = $s->timestamp;
  67      }
  68  
  69      /**
  70      * Load template's source from files into current template object
  71      *
  72      * @param Smarty_Template_Source $source source object
  73      * @return string template source
  74      * @throws SmartyException if source cannot be loaded
  75      */
  76      public function getContent(Smarty_Template_Source $source)
  77      {
  78          if (!$source->exists) {
  79              throw new SmartyException("Unable to read template {$source->type} '{$source->name}'");
  80          }
  81  
  82          $_rdl = preg_quote($source->smarty->right_delimiter);
  83          $_ldl = preg_quote($source->smarty->left_delimiter);
  84          $_components = array_reverse($source->components);
  85          $_first = reset($_components);
  86          $_last = end($_components);
  87  
  88          foreach ($_components as $_component) {
  89              // register dependency
  90              if ($_component != $_first) {
  91                  $source->template->properties['file_dependency'][$_component->uid] = array($_component->filepath, $_component->timestamp, $_component->type);
  92              }
  93  
  94              // read content
  95              $source->filepath = $_component->filepath;
  96              $_content = $_component->content;
  97  
  98              // extend sources
  99              if ($_component != $_last) {
 100                  if (preg_match_all("!({$_ldl}block\s(.+?){$_rdl})!", $_content, $_open) !=
 101                  preg_match_all("!({$_ldl}/block{$_rdl})!", $_content, $_close)) {
 102                      throw new SmartyException("unmatched {block} {/block} pairs in template {$_component->type} '{$_component->name}'");
 103                  }
 104                  preg_match_all("!{$_ldl}block\s(.+?){$_rdl}|{$_ldl}/block{$_rdl}|{$_ldl}\*([\S\s]*?)\*{$_rdl}!", $_content, $_result, PREG_OFFSET_CAPTURE);
 105                  $_result_count = count($_result[0]);
 106                  $_start = 0;
 107                  while ($_start+1 < $_result_count) {
 108                      $_end = 0;
 109                      $_level = 1;
 110                      if (substr($_result[0][$_start][0],0,strlen($source->smarty->left_delimiter)+1) == $source->smarty->left_delimiter.'*') {
 111                          $_start++;
 112                          continue;
 113                      }
 114                      while ($_level != 0) {
 115                          $_end++;
 116                          if (substr($_result[0][$_start + $_end][0],0,strlen($source->smarty->left_delimiter)+1) == $source->smarty->left_delimiter.'*') {
 117                              continue;
 118                          }
 119                          if (!strpos($_result[0][$_start + $_end][0], '/')) {
 120                              $_level++;
 121                          } else {
 122                              $_level--;
 123                          }
 124                      }
 125                      $_block_content = str_replace($source->smarty->left_delimiter . '$smarty.block.parent' . $source->smarty->right_delimiter, '%%%%SMARTY_PARENT%%%%', substr($_content, $_result[0][$_start][1] + strlen($_result[0][$_start][0]), $_result[0][$_start + $_end][1] - $_result[0][$_start][1] - + strlen($_result[0][$_start][0])));
 126                      Smarty_Internal_Compile_Block::saveBlockData($_block_content, $_result[0][$_start][0], $source->template, $_component->filepath);
 127                      $_start = $_start + $_end + 1;
 128                  }
 129              } else {
 130                  return $_content;
 131              }
 132          }
 133      }
 134  
 135      /**
 136      * Determine basename for compiled filename
 137      *
 138      * @param Smarty_Template_Source $source source object
 139      * @return string resource's basename
 140      */
 141      public function getBasename(Smarty_Template_Source $source)
 142      {
 143          return str_replace(':', '.', basename($source->filepath));
 144      }
 145  
 146  }
 147  
 148  ?>