library/core/core.load_resource_plugin.php

   1 <?php
   2 /**
   3  * Smarty plugin
   4  * @package Smarty
   5  * @subpackage plugins
   6  */
   7
   8 /**
   9  * load a resource plugin
  10  *
  11  * @param string $type
  12  */
  13
  14 // $type
  15
  16 function smarty_core_load_resource_plugin($params, &$smarty)
  17 {
  18     /*
  19      * Resource plugins are not quite like the other ones, so they are
  20      * handled differently. The first element of plugin info is the array of
  21      * functions provided by the plugin, the second one indicates whether
  22      * all of them exist or not.
  23      */
  24
  25     $_plugin = &$smarty->_plugins['resource'][$params['type']];
  26     if (isset($_plugin)) {
  27         if (!$_plugin[1] && count($_plugin[0])) {
  28             $_plugin[1] = true;
  29             foreach ($_plugin[0] as $_plugin_func) {
  30                 if (!is_callable($_plugin_func)) {
  31                     $_plugin[1] = false;
  32                     break;
  33                 }
  34             }
  35         }
  36
  37         if (!$_plugin[1]) {
  38             $smarty->_trigger_fatal_error("[plugin] resource '" . $params['type'] . "' is not implemented", null, null, __FILE__, __LINE__);
  39         }
  40
  41         return;
  42     }
  43
  44     $_plugin_file = $smarty->_get_plugin_filepath('resource', $params['type']);
  45     $_found = ($_plugin_file != false);
  46
  47     if ($_found) {            /*
  48          * If the plugin file is found, it -must- provide the properly named
  49          * plugin functions.
  50          */
  51         include_once($_plugin_file);
  52
  53         /*
  54          * Locate functions that we require the plugin to provide.
  55          */
  56         $_resource_ops = array('source', 'timestamp', 'secure', 'trusted');
  57         $_resource_funcs = array();
  58         foreach ($_resource_ops as $_op) {
  59             $_plugin_func = 'smarty_resource_' . $params['type'] . '_' . $_op;
  60             if (!function_exists($_plugin_func)) {
  61                 $smarty->_trigger_fatal_error("[plugin] function $_plugin_func() not found in $_plugin_file", null, null, __FILE__, __LINE__);
  62                 return;
  63             } else {
  64                 $_resource_funcs[] = $_plugin_func;
  65             }
  66         }
  67
  68         $smarty->_plugins['resource'][$params['type']] = array($_resource_funcs, true);
  69     }
  70 }
  71
  72 /* vim: set expandtab: */
  73
  74 ?>