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   1  <?php
   2  /**
   3   * Smarty Internal Plugin Resource String
   4   *
   5   * @package Smarty
   6   * @subpackage TemplateResources
   7   * @author Uwe Tews
   8   * @author Rodney Rehm
   9   */
  10  
  11  /**
  12   * Smarty Internal Plugin Resource String
  13   *
  14   * Implements the strings as resource for Smarty template
  15   *
  16   * {@internal unlike eval-resources the compiled state of string-resources is saved for subsequent access}}
  17   *
  18   * @package Smarty
  19   * @subpackage TemplateResources
  20   */
  21  class Smarty_Internal_Resource_String extends Smarty_Resource {
  22  
  23      /**
  24       * populate Source Object with meta data from Resource
  25       *
  26       * @param Smarty_Template_Source   $source    source object
  27       * @param Smarty_Internal_Template $_template template object
  28       * @return void
  29       */
  30      public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template=null)
  31      {
  32          $source->uid = $source->filepath = sha1($source->name);
  33          $source->timestamp = 0;
  34          $source->exists = true;
  35      }
  36  
  37      /**
  38       * Load template's source from $resource_name into current template object
  39       *
  40       * @uses decode() to decode base64 and urlencoded template_resources
  41       * @param Smarty_Template_Source $source source object
  42       * @return string template source
  43       */
  44      public function getContent(Smarty_Template_Source $source)
  45      {
  46          return $this->decode($source->name);
  47      }
  48      
  49      /**
  50       * decode base64 and urlencode
  51       *
  52       * @param string $string template_resource to decode
  53       * @return string decoded template_resource
  54       */
  55      protected function decode($string)
  56      {
  57          // decode if specified
  58          if (($pos = strpos($string, ':')) !== false) {
  59              if (!strncmp($string, 'base64', 6)) {
  60                  return base64_decode(substr($string, 7));
  61              } elseif (!strncmp($string, 'urlencode', 9)) {
  62                  return urldecode(substr($string, 10));
  63              }
  64          }
  65          
  66          return $string;
  67      }
  68      
  69      /**
  70       * modify resource_name according to resource handlers specifications
  71       *
  72       * @param Smarty $smarty        Smarty instance
  73       * @param string $resource_name resource_name to make unique
  74       * @return string unique resource name
  75       */
  76      protected function buildUniqueResourceName(Smarty $smarty, $resource_name)
  77      {
  78          return get_class($this) . '#' .$this->decode($resource_name);
  79      }
  80  
  81      /**
  82       * Determine basename for compiled filename
  83       *
  84       * Always returns an empty string.
  85       *
  86       * @param Smarty_Template_Source $source source object
  87       * @return string resource's basename
  88       */
  89      protected function getBasename(Smarty_Template_Source $source)
  90      {
  91          return '';
  92      }
  93  
  94  }
  95  
  96  ?>