/[drupal]/contributions/theme-engines/phptal/phptal.engine
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revision 1.10, Mon Aug 27 09:12:56 2007 UTC revision 1.10.2.1, Thu Oct 1 22:17:18 2009 UTC
# Line 3  Line 3 
3    
4  /**  /**
5   * @file   * @file
6   * Handles integration of templates written in PHPtal with the Drupal theme system.   * Integrates PHPTAL templates with the Drupal theme system.
7   */   */
8    
9    /**
10     * @require_once
11     *   Includes the PHPTAL class.
12     */
13    require_once(drupal_get_path('theme_engine', 'phptal') . 'PHPTAL.php');
14    
15    /**
16     * Implementation of the hook_extension.
17     *
18     * @return
19     *   The default PHPTAL template extension.
20     *   This can be changed to whatever you like.
21     *   However, and ending of .php is recommended.
22     */
23    function phptal_extension() {
24            return '.tpl.php';
25    }
26    
27    /**
28     * Implementation of the hook_init.
29     */
30  function phptal_init($template) {  function phptal_init($template) {
31    $file = dirname($template->filename) . '/template.php';    $file = dirname($template->filename) .'/template.php';
32    if (file_exists($file)) {    if (file_exists($file)) {
33      include_once "./$file";      include_once "./$file";
34    }    }
35  }  }
36    
37  /**  /**
38   * Implementation of hook_theme to tell Drupal what templates the engine   * Implementation of hook_theme.
39     *
40     * This tells Drupal what templates the engine
41   * and the current theme use. The $existing argument will contain hooks   * and the current theme use. The $existing argument will contain hooks
42   * pre-defined by Drupal so that we can use that information if   * pre-defined by Drupal so that we can use that information if
43   * we need to.   * we need to.
44   */   */
45  function phptal_theme($existing, $type, $theme, $path) {  function phptal_theme($existing, $type, $theme, $path) {
46    $templates = drupal_find_theme_functions($existing, array('phptal', $theme));    $templates = drupal_find_theme_functions($existing, array('phptal', $theme));
47    $templates += drupal_find_theme_templates($existing, '.tal', $path);    $templates += drupal_find_theme_templates($existing, phptal_extension(), $path);
48    return $templates;    return $templates;
49  }  }
50    
51  /**  /**
52   * Adds additional helper variables to all templates.   * Implementation of hook_render_template.
  *  
  * Counts how many times certain hooks have been called. Sidebar left / right are special cases.  
53   *   *
54     * This is called for every phptal template found in the
55     * theme's directory that matches the extension set above
56     * in hook_extension.
57     *
58     * @param $template_file
59     *   The path to the current template.
60   * @param $variables   * @param $variables
61   *   A series of key-value value pairs.   *   The Drupal variables array. These are passed to the $phptal class.
62   * @param $hook   * @param $phptal
63   *   The name of the theme function being executed.   *   The PHPTAL object. All variables are assigned to it.
64   */   * @param $phptal->setCacheLifetime()
65  function phptal_engine_preprocess(&$variables, $hook) {   *   Sets the lifetime of cache files (in days).
66    global $user;   * @param $phptal->setForceReparse()
67    static $count = array();   *   Forces reparsing (i.e., no cache). Useful for debugging.
68     * @return
69    // Create variables so anything which is themed can be zebra striped automatically.   *   HTML, PHP, etc...(i.e., the current template)
   $count[$hook] = isset($count[$hook]) && is_int($count[$hook]) ? $count[$hook] : 1;  
   $variables['zebra'] = ($count[$hook] % 2) ? 'odd' : 'even';  
   $variables['id'] = $count[$hook]++;  
   
   // Tell all templates where they are located.  
   $variables['directory'] = path_to_theme();  
   $variables['is_front'] = drupal_is_front_page();  
   // Tell all templates by which kind of user they're viewed.  
   $variables['logged_in'] = ($user->uid > 0);  
   $variables['is_admin'] = user_access('access administration pages');  
 }  
   
 /**  
70   */   */
71  function phptal_render_template($template_file, $variables) {  function phptal_render_template($template_file, $variables) {
72    global $theme_engine;    $phptal = new PHPTAL($template_file);
73    
74    require_once 'PHPTAL.php';    foreach ($variables as $key=>$value) {
75        $phptal->$key = $value;
   $phptal = new PHPTAL($template_file);  
   foreach ($variables as $k=>$v) {  
     $phptal->$k = $v;  
   }  
   
   try {  
     return html_entity_decode($phptal->execute());  
   }  
   catch (Exception $e) {  
     watchdog('error', '%engine.engine, %file: %message.', array(  
       '%engine' => $theme_engine, '%file' => $template_file,  
       '%message' => $e->getMessage()));  
     error_log("[phptal] $template_file: " . $e->getMessage());  
76    }    }
77    
78            $phptal->setCacheLifetime(1);
79            //$phptal->setForceReparse(true);
80    
81            try {
82                    return html_entity_decode($phptal->execute());
83            }
84            catch (Exception $e) {
85                    //echo $e; //FOR DEBUGGING: Uncomment to see errors.
86                    phptal_engine_error();
87            }
88  }  }
89    
90    
91  /**  /**
92     * phptal_engine_error
93     *
94     * Display errors in a safe way. NOTE: I am still working on this function.
95     *
96     * @param $error
97     *   Our error string
98   */   */
99  function phptal_extension() {  function phptal_engine_error($error='default') {
100    return '.tal';    $doclink = ' ' . t('Please refer to the documentation on the ').'<a href="http://drupal.org/project/phptal">' . t('PHPTAL project page') . '</a>.';
101      $errors = array(
102          'default'       => t('There is a problem with the phptal theme engine') . $doclink,
103        );
104      if ( isset($errors[$error]) ) {
105        $msg = $errors[$error];
106      } else {
107        $msg = $errors['default'];
108      }
109      drupal_set_message($msg, 'error');
110  }  }
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