/[drupal]/contributions/modules/views_customfield/views_customfield.module
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revision 1.2, Thu Oct 30 18:45:23 2008 UTC revision 1.3, Sat Nov 1 00:32:02 2008 UTC
# Line 1  Line 1 
1  <?php  <?php
2  // $Id: views_customfield.module,v 1.1 2008/10/30 16:04:56 casey Exp $  // $Id: views_customfield.module,v 1.2 2008/10/30 18:45:23 casey Exp $
3    
4  /**  /**
5   * Implementation of hook_views_tables()   * Implementation of hook_views_tables()
# Line 7  Line 7 
7   * @return array   * @return array
8   */   */
9  function views_customfield_views_tables() {  function views_customfield_views_tables() {
   
10    $tables['views_customfield'] = array(    $tables['views_customfield'] = array(
11      'fields' => array(      'fields' => array(
12        'text' => array(        'text' => array(
# Line 16  function views_customfield_views_tables( Line 15  function views_customfield_views_tables(
15          'sortable' => FALSE,          'sortable' => FALSE,
16          'notafield' => TRUE,          'notafield' => TRUE,
17          'handler' => 'views_customfield_text_field_handler',          'handler' => 'views_customfield_text_field_handler',
         'validate' => 'views_customfield_text_field_validate',  
18          /**          /**
19           * @see http://drupal.org/node/99792#option (complex option fields)           * @see http://drupal.org/node/99792#option (complex option fields)
20           */           */
# Line 40  function views_customfield_views_tables( Line 38  function views_customfield_views_tables(
38        )        )
39      )      )
40    );    );
41    
42      if (module_exists('validator_phpcode')) {
43        $tables['views_customfield']['fields']['text']['validate'] = 'views_customfield_text_field_validate';
44      }
45    
46    return $tables;    return $tables;
47  }  }
# Line 59  function views_customfield_text_field_va Line 61  function views_customfield_text_field_va
61    $options = unserialize($fielddata['options']);    $options = unserialize($fielddata['options']);
62    $code = $options['value'];    $code = $options['value'];
63    
64    if (($error = _views_customfield_php_has_errors($code))) {    if (($error = validator_phpcode_has_errors($code))) {
65      // TODO not very efficient, but $fielddata doesn't contain position-info      // TODO not very efficient, but $fielddata doesn't contain position-info
66        // Some other way possible?
67      for ($i=0;$i<$view['field']['count'];$i++) {      for ($i=0;$i<$view['field']['count'];$i++) {
68        if ($form['field'][$i]['fullname']['#value'] == 'views_customfield.text') {        if ($form['field'][$i]['fullname']['#value'] == 'views_customfield.text'
69          if ($form['field'][$i]['options']['value']['#value'] == $code) {        && $form['field'][$i]['options']['value']['#value'] == $code) {
70            $msg = t('Views Custom field') .': '. $error[0] .' on line '. $error[1];          $msg = t('Views Custom field') .': '. $error[0] .' on line '. $error[1];
71            form_error($form['field'][$i]['options']['value'], $msg);          form_error($form['field'][$i]['options']['value'], $msg);
72            return;          return;
         }  
73        }        }
74      }      }
75    }    }
# Line 84  function views_customfield_text_field_va Line 86  function views_customfield_text_field_va
86   */   */
87  function views_customfield_text_field_handler($fieldinfo, $fielddata, $value, $data) {  function views_customfield_text_field_handler($fieldinfo, $fielddata, $value, $data) {
88    static $static;    static $static;
89      // TODO should be possible to unserialize just once per view/field
90    $options = unserialize($fielddata['options']);    $options = unserialize($fielddata['options']);
91    
92    return _views_customfield_eval($options['value'], $static[$fielddata['position']], $data);    return _views_customfield_eval($options['value'], $static[$fielddata['position']], $data);
# Line 168  function theme_views_customfield_option( Line 171  function theme_views_customfield_option(
171    return '</td><td colspan="7"></td></tr><tr><td colspan="4">'.$element['#children'];    return '</td><td colspan="7"></td></tr><tr><td colspan="4">'.$element['#children'];
172  }  }
173    
 /**  
  * Returns FALSE if there is no syntax error in $code, or an array($message, $line)  
  * if there is one.  
  *  
  * @see http://us2.php.net/manual/en/function.php-check-syntax.php#86466  
  * @author nicolas dot grekas+php at gmail dot com  
  *  
  * @param string $code  
  * @return mixed  
  *   FALSE if $code has no PHP errors, else:  
  *   array  
  *     '0' string contains the error message  
  *     '1' int contains the line number the error was raised at  
  */  
 function _views_customfield_php_has_errors($code) {  
   $braces = 0;  
   $inString = 0;  
   
   // First of all, we need to know if braces are correctly balanced.  
   // This is not trivial due to variable interpolation which  
   // occurs in heredoc, backticked and double quoted strings  
   foreach (token_get_all('<?php ' . $code) as $token) {  
     if (is_array($token)) {  
       switch ($token[0]) {  
         case T_CURLY_OPEN:  
         case T_DOLLAR_OPEN_CURLY_BRACES:  
         case T_START_HEREDOC: ++$inString; break;  
         case T_END_HEREDOC:   --$inString; break;  
       }  
     }  
     else if ($inString & 1) {  
       switch ($token) {  
         case '`':  
         case '"': --$inString; break;  
       }  
     }  
     else {  
       switch ($token) {  
         case '`':  
         case '"': ++$inString; break;  
   
         case '{': ++$braces; break;  
         case '}':  
           if ($inString) --$inString;  
           else {  
             --$braces;  
             if ($braces < 0) break 2;  
           }  
           break;  
       }  
     }  
   }  
   // Display parse error messages and use output buffering to catch them  
   $inString = @ini_set('log_errors', FALSE);  
   $token = @ini_set('display_errors', TRUE);  
   ob_start();  
   // If $braces is not zero, then we are sure that $code is broken.  
   // We run it anyway in order to catch the error message and line number.  
   
   // Else, if $braces are correctly balanced, then we can safely put  
   // $code in a dead code sandbox to prevent its execution.  
   // Note that without this sandbox, a function or class declaration inside  
   // $code could throw a "Cannot redeclare" fatal error.  
   $braces || $code = "if(0){{$code}\n}";  
   
   if (FALSE === eval('?>'. $code)) {  
     if ($braces) $braces = PHP_INT_MAX;  
     else {  
       // Get the maximum number of lines in $code to fix a border case  
       FALSE !== strpos($code, "\r") && $code = strtr(str_replace("\r\n", "\n", $code), "\r", "\n");  
       $braces = substr_count($code, "\n");  
     }  
   
     $code = ob_get_clean();  
     $code = strip_tags($code);  
   
     // Get the error message and line number  
     if (preg_match("'syntax error, (.+) in .+ on line (\d+)$'s", $code, $code)) {  
       $code[2] = (int) $code[2];  
       $code = $code[2] <= $braces  
         ? array($code[1], (int) $code[2])  
         : array('unexpected $end' . substr($code[1], 14), $braces);  
     }  
     else $code = array('syntax error', 0);  
   }  
   else {  
     ob_end_clean();  
     $code = FALSE;  
   }  
   
   @ini_set('display_errors', $token);  
   @ini_set('log_errors', $inString);  
   
   return $code;  
 }  
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