MODX Revolution PHP Cross Reference Content Management Systems

Source: /core/model/smarty/sysplugins/smarty_internal_cacheresource_file.php - 205 lines - 7905 bytes - Summary - Text - Print

Description: Smarty Internal Plugin CacheResource File Implements the file system as resource for the HTML cache Version ussing nocache inserts

   1  <?php
   2  
   3  /**
   4   * Smarty Internal Plugin CacheResource File
   5   * 
   6   * Implements the file system as resource for the HTML cache
   7   * Version ussing nocache inserts
   8   * 
   9   * @package Smarty
  10   * @subpackage Cacher
  11   * @author Uwe Tews 
  12   */
  13  
  14  /**
  15   * This class does contain all necessary methods for the HTML cache on file system
  16   */
  17  class Smarty_Internal_CacheResource_File {
  18      function __construct($smarty)
  19      {
  20          $this->smarty = $smarty;
  21      } 
  22      /**
  23       * Returns the filepath of the cached template output
  24       * 
  25       * @param object $_template current template
  26       * @return string the cache filepath
  27       */
  28      public function getCachedFilepath($_template)
  29      {
  30          $_source_file_path = str_replace(':', '.', $_template->getTemplateFilepath());
  31          $_cache_id = isset($_template->cache_id) ? preg_replace('![^\w\|]+!', '_', $_template->cache_id) : null;
  32          $_compile_id = isset($_template->compile_id) ? preg_replace('![^\w\|]+!', '_', $_template->compile_id) : null;
  33          $_filepath = $_template->templateUid; 
  34          // if use_sub_dirs, break file into directories
  35          if ($this->smarty->use_sub_dirs) {
  36              $_filepath = substr($_filepath, 0, 2) . DS
  37               . substr($_filepath, 2, 2) . DS
  38               . substr($_filepath, 4, 2) . DS
  39               . $_filepath;
  40          } 
  41          $_compile_dir_sep = $this->smarty->use_sub_dirs ? DS : '^';
  42          if (isset($_cache_id)) {
  43              $_cache_id = str_replace('|', $_compile_dir_sep, $_cache_id) . $_compile_dir_sep;
  44          } else {
  45              $_cache_id = '';
  46          } 
  47          if (isset($_compile_id)) {
  48              $_compile_id = $_compile_id . $_compile_dir_sep;
  49          } else {
  50              $_compile_id = '';
  51          } 
  52          $_cache_dir = $this->smarty->cache_dir;
  53          if (strpos('/\\', substr($_cache_dir, -1)) === false) {
  54              $_cache_dir .= DS;
  55          } 
  56          return $_cache_dir . $_cache_id . $_compile_id . $_filepath . '.' . basename($_source_file_path) . '.php';
  57      } 
  58  
  59      /**
  60       * Returns the timpestamp of the cached template output
  61       * 
  62       * @param object $_template current template
  63       * @return integer |booelan the template timestamp or false if the file does not exist
  64       */
  65      public function getCachedTimestamp($_template)
  66      { 
  67          // return @filemtime ($_template->getCachedFilepath());
  68          return ($_template->getCachedFilepath() && file_exists($_template->getCachedFilepath())) ? filemtime($_template->getCachedFilepath()) : false ;
  69      } 
  70  
  71      /**
  72       * Returns the cached template output
  73       * 
  74       * @param object $_template current template
  75       * @return string |booelan the template content or false if the file does not exist
  76       */
  77      public function getCachedContents($_template, $no_render = false)
  78      {
  79          if (!$no_render) {
  80              ob_start();
  81          }
  82          $_smarty_tpl = $_template;
  83          include $_template->getCachedFilepath();
  84          if ($no_render) {
  85              return null;
  86          } else {
  87            return ob_get_clean();
  88          }
  89      } 
  90  
  91      /**
  92       * Writes the rendered template output to cache file
  93       * 
  94       * @param object $_template current template
  95       * @return boolean status
  96       */
  97      public function writeCachedContent($_template, $content)
  98      {
  99          if (!$_template->resource_object->isEvaluated) {
 100              if (Smarty_Internal_Write_File::writeFile($_template->getCachedFilepath(), $content, $this->smarty) === true) {
 101                  $_template->cached_timestamp = filemtime($_template->getCachedFilepath());
 102                  return true;
 103              } 
 104          } 
 105          return false;
 106      } 
 107  
 108      /**
 109       * Empty cache folder
 110       * 
 111       * @param integer $exp_time expiration time
 112       * @return integer number of cache files deleted
 113       */
 114      public function clearAll($exp_time = null)
 115      {
 116          return $this->clear(null, null, null, $exp_time);
 117      } 
 118      /**
 119       * Empty cache for a specific template
 120       * 
 121       * @param string $resource_name template name
 122       * @param string $cache_id cache id
 123       * @param string $compile_id compile id
 124       * @param integer $exp_time expiration time
 125       * @return integer number of cache files deleted
 126       */
 127      public function clear($resource_name, $cache_id, $compile_id, $exp_time)
 128      {
 129          $_cache_id = isset($cache_id) ? preg_replace('![^\w\|]+!', '_', $cache_id) : null;
 130          $_compile_id = isset($compile_id) ? preg_replace('![^\w\|]+!', '_', $compile_id) : null;
 131          $_dir_sep = $this->smarty->use_sub_dirs ? '/' : '^';
 132          $_compile_id_offset = $this->smarty->use_sub_dirs ? 3 : 0;
 133          $_dir = rtrim($this->smarty->cache_dir, '/\\') . DS;
 134          $_dir_length = strlen($_dir);
 135          if (isset($_cache_id)) {
 136              $_cache_id_parts = explode('|', $_cache_id);
 137              $_cache_id_parts_count = count($_cache_id_parts);
 138              if ($this->smarty->use_sub_dirs) {
 139                  foreach ($_cache_id_parts as $id_part) {
 140                      $_dir .= $id_part . DS;
 141                  } 
 142              } 
 143          } 
 144          if (isset($resource_name)) {
 145              $_save_stat = $this->smarty->caching;
 146              $this->smarty->caching = true;
 147              $tpl = new $this->smarty->template_class($resource_name, $this->smarty); 
 148              // remove from template cache
 149              unset($this->smarty->template_objects[crc32($tpl->template_resource . $tpl->cache_id . $tpl->compile_id)]);
 150              $this->smarty->caching = $_save_stat;
 151              if ($tpl->isExisting()) {
 152                  $_resourcename_parts = basename(str_replace('^', '/', $tpl->getCachedFilepath()));
 153              } else {
 154                  return 0;
 155              } 
 156          } 
 157          $_count = 0;
 158          if (file_exists($_dir)) {
 159              $_cacheDirs = new RecursiveDirectoryIterator($_dir);
 160              $_cache = new RecursiveIteratorIterator($_cacheDirs, RecursiveIteratorIterator::CHILD_FIRST);
 161              foreach ($_cache as $_file) {
 162                  if (strpos($_file, '.svn') !== false) continue; 
 163                  // directory ?
 164                  if ($_file->isDir()) {
 165                      if (!$_cache->isDot()) {
 166                          // delete folder if empty
 167                          @rmdir($_file->getPathname());
 168                      } 
 169                  } else {
 170                      $_parts = explode($_dir_sep, str_replace('\\', '/', substr((string)$_file, $_dir_length)));
 171                      $_parts_count = count($_parts); 
 172                      // check name
 173                      if (isset($resource_name)) {
 174                          if ($_parts[$_parts_count-1] != $_resourcename_parts) {
 175                              continue;
 176                          } 
 177                      } 
 178                      // check compile id
 179                      if (isset($_compile_id) && (!isset($_parts[$_parts_count-2 - $_compile_id_offset]) || $_parts[$_parts_count-2 - $_compile_id_offset] != $_compile_id)) {
 180                          continue;
 181                      } 
 182                      // check cache id
 183                      if (isset($_cache_id)) {
 184                          // count of cache id parts
 185                          $_parts_count = (isset($_compile_id)) ? $_parts_count - 2 - $_compile_id_offset : $_parts_count - 1 - $_compile_id_offset;
 186                          if ($_parts_count < $_cache_id_parts_count) {
 187                              continue;
 188                          } 
 189                          for ($i = 0; $i < $_cache_id_parts_count; $i++) {
 190                              if ($_parts[$i] != $_cache_id_parts[$i]) continue 2;
 191                          } 
 192                      } 
 193                      // expired ?
 194                      if (isset($exp_time) && time() - @filemtime($_file) < $exp_time) {
 195                          continue;
 196                      } 
 197                      $_count += @unlink((string) $_file) ? 1 : 0;
 198                  } 
 199              } 
 200          } 
 201          return $_count;
 202      } 
 203  } 
 204  
 205  ?>

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