2071 lines
		
	
	
		
			64 KiB
		
	
	
	
		
			PHP
		
	
	
			
		
		
	
	
			2071 lines
		
	
	
		
			64 KiB
		
	
	
	
		
			PHP
		
	
	
<?php
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/* $Id$ */
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/**
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 * @file
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 * Common functions that many Drupal modules will need to reference.
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 *
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 * The functions that are critical and need to be available even when serving
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 * a cached page are instead located in bootstrap.inc.
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 */
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/**
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 * Return status for saving which involved creating a new item.
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 */
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define('SAVED_NEW', 1);
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/**
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 * Return status for saving which involved an update to an existing item.
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 */
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define('SAVED_UPDATED', 2);
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/**
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 * Return status for saving which deleted an existing item.
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 */
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define('SAVED_DELETED', 3);
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/**
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 * Set the breadcrumb trail for the current page.
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 *
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 * @param $breadcrumb
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 *   Array of links, starting with "home" and proceeding up to but not including
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 *   the current page.
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 */
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function drupal_set_breadcrumb($breadcrumb = NULL) {
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  static $stored_breadcrumb;
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  if (isset($breadcrumb)) {
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    $stored_breadcrumb = $breadcrumb;
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  }
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  return $stored_breadcrumb;
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}
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/**
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 * Get the breadcrumb trail for the current page.
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 */
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function drupal_get_breadcrumb() {
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  $breadcrumb = drupal_set_breadcrumb();
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  if (!isset($breadcrumb)) {
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    $breadcrumb = menu_get_active_breadcrumb();
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  }
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  return $breadcrumb;
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}
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/**
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 * Add output to the head tag of the HTML page.
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 * This function can be called as long the headers aren't sent.
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 */
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function drupal_set_html_head($data = NULL) {
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  static $stored_head = '';
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  if (!is_null($data)) {
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    $stored_head .= $data ."\n";
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  }
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  return $stored_head;
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}
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/**
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 * Retrieve output to be displayed in the head tag of the HTML page.
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 */
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function drupal_get_html_head() {
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  global $base_url;
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  $output = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n";
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  $output .= "<base href=\"$base_url/\" />\n";
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  $output .= theme('stylesheet_import', 'misc/drupal.css');
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  return $output . drupal_set_html_head();
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}
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/**
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 * Reset the static variable which holds the aliases mapped for this request.
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 */
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function drupal_clear_path_cache() {
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  drupal_lookup_path('wipe');
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}
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/**
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 * Given a path alias, return the internal path it represents.
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 */
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function drupal_get_normal_path($path) {
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  //drupal_get_path_alias($path);
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  if ($src = drupal_lookup_path('alias', $path)) {
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    return $src;
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  }
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  elseif (function_exists('conf_url_rewrite')) {
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    return conf_url_rewrite($path, 'incoming');
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  }
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  else {
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    return $path;
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  }
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}
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/**
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 * Set an HTTP response header for the current page.
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 */
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function drupal_set_header($header = NULL) {
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  // We use an array to guarantee there are no leading or trailing delimiters.
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  // Otherwise, header('') could get called when serving the page later, which
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  // ends HTTP headers prematurely on some PHP versions.
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  static $stored_headers = array();
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  if (strlen($header)) {
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    header($header);
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    $stored_headers[] = $header;
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  }
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  return implode("\n", $stored_headers);
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}
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/**
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 * Get the HTTP response headers for the current page.
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 */
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function drupal_get_headers() {
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  return drupal_set_header();
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}
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/**
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 * @name HTTP handling
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 * @{
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 * Functions to properly handle HTTP responses.
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 */
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/**
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 * Prepare a destination query string for use in combination with
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 * drupal_goto().  Used to direct the user back to the referring page
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 * after completing a form.
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 *
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 * @see drupal_goto()
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 */
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function drupal_get_destination() {
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  $destination[] = $_GET['q'];
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  $params = array('page', 'sort', 'order');
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  foreach ($params as $param) {
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    if (isset($_GET[$param])) {
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      $destination[] = "$param=". $_GET[$param];
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    }
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  }
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  return 'destination='. urlencode(implode('&', $destination));
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}
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/**
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 * Send the user to a different Drupal page.
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 *
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 * This issues an on-site HTTP redirect. The function makes sure the redirected
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 * URL is formatted correctly.
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 *
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 * Usually the redirected URL is constructed from this function's input
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 * parameters.  However you may override that behavior by setting a
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 * <em>destination</em> in either the $_REQUEST-array (i.e. by using
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 * the query string of an URI) or the $_REQUEST['edit']-array (i.e. by
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 * using a hidden form field).  This is used to direct the user back to
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 * the proper page after completing a form.  For example, after editing
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 * a post on the 'admin/node'-page or after having logged on using the
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 * 'user login'-block in a sidebar.  The function drupal_get_destination()
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 * can be used to help set the destination URL.
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 *
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 * It is advised to use drupal_goto() instead of PHP's header(), because
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 * drupal_goto() will append the user's session ID to the URI when PHP is
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 * compiled with "--enable-trans-sid".
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 *
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 * This function ends the request; use it rather than a print theme('page')
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 * statement in your menu callback.
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 *
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 * @param $path
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 *   A Drupal path.
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 * @param $query
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 *   The query string component, if any.
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 * @param $fragment
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 *   The destination fragment identifier (named anchor).
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 *
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 * @see drupal_get_destination()
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 */
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function drupal_goto($path = '', $query = NULL, $fragment = NULL) {
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  if ($_REQUEST['destination']) {
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    extract(parse_url($_REQUEST['destination']));
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  }
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  else if ($_REQUEST['edit']['destination']) {
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    extract(parse_url($_REQUEST['edit']['destination']));
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  }
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  $url = url($path, $query, $fragment, TRUE);
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  if (ini_get('session.use_trans_sid') && session_id() && !strstr($url, session_id())) {
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    $sid = session_name() . '=' . session_id();
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    if (strstr($url, '?') && !strstr($url, $sid)) {
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      $url = $url .'&'. $sid;
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    }
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    else {
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      $url = $url .'?'. $sid;
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    }
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  }
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  // Before the redirect, allow modules to react to the end of the page request.
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  module_invoke_all('exit', $url);
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  header('Location: '. $url);
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  // The "Location" header sends a REDIRECT status code to the http
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  // daemon. In some cases this can go wrong, so we make sure none
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  // of the code below the drupal_goto() call gets executed when we redirect.
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  exit();
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}
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/**
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 * Generates a 404 error if the request can not be handled.
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 */
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function drupal_not_found() {
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  header('HTTP/1.0 404 Not Found');
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  watchdog('page not found', t('%page not found.', array('%page' => theme('placeholder', $_GET['q']))), WATCHDOG_WARNING);
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  $path = drupal_get_normal_path(variable_get('site_404', ''));
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  $status = MENU_NOT_FOUND;
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  if ($path) {
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    menu_set_active_item($path);
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    $return = menu_execute_active_handler();
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  }
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  if (empty($return)) {
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    drupal_set_title(t('Page not found'));
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  }
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  print theme('page', $return);
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}
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/**
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 * Generates a 403 error if the request is not allowed.
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 */
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function drupal_access_denied() {
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  header('HTTP/1.0 403 Forbidden');
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  watchdog('access denied', t('%page denied access.', array('%page' => theme('placeholder', $_GET['q']))), WATCHDOG_WARNING, l(t('view'), $_GET['q']));
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  $path = drupal_get_normal_path(variable_get('site_403', ''));
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  $status = MENU_NOT_FOUND;
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  if ($path) {
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    menu_set_active_item($path);
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    $return = menu_execute_active_handler();
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  }
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  if (empty($return)) {
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    drupal_set_title(t('Access denied'));
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    $return = message_access();
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  }
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  print theme('page', $return);
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}
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/**
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 * Perform an HTTP request.
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 *
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 * This is a flexible and powerful HTTP client implementation. Correctly handles
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 * GET, POST, PUT or any other HTTP requests. Handles redirects.
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 *
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 * @param $url
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 *   A string containing a fully qualified URI.
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 * @param $headers
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 *   An array containing an HTTP header => value pair.
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 * @param $method
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 *   A string defining the HTTP request to use.
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 * @param $data
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 *   A string containing data to include in the request.
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 * @param $retry
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 *   An integer representing how many times to retry the request in case of a
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 *   redirect.
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 * @return
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 *   An object containing the HTTP request headers, response code, headers,
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 *   data, and redirect status.
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 */
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function drupal_http_request($url, $headers = array(), $method = 'GET', $data = NULL, $retry = 3) {
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  $result = new StdClass();
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  // Parse the URL, and make sure we can handle the schema.
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  $uri = parse_url($url);
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  switch ($uri['scheme']) {
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    case 'http':
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      $fp = @fsockopen($uri['host'], ($uri['port'] ? $uri['port'] : 80), $errno, $errstr, 15);
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      break;
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    case 'https':
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      // Note: Only works for PHP 4.3 compiled with OpenSSL.
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      $fp = @fsockopen('ssl://'. $uri['host'], ($uri['port'] ? $uri['port'] : 443), $errno, $errstr, 20);
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      break;
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    default:
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      $result->error = 'invalid schema '. $uri['scheme'];
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      return $result;
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  }
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  // Make sure the socket opened properly.
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  if (!$fp) {
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    $result->error = trim($errno .' '. $errstr);
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    return $result;
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  }
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  // Construct the path to act on.
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  $path = $uri['path'] ? $uri['path'] : '/';
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  if ($uri['query']) {
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    $path .= '?'. $uri['query'];
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  }
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  // Create HTTP request.
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  $defaults = array(
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    'Host' => 'Host: '. $uri['host'],
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    'User-Agent' => 'User-Agent: Drupal (+http://www.drupal.org/)',
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    'Content-Length' => 'Content-Length: '. strlen($data)
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  );
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  foreach ($headers as $header => $value) {
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    $defaults[$header] = $header .': '. $value;
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  }
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  $request = $method .' '. $path ." HTTP/1.0\r\n";
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  $request .= implode("\r\n", $defaults);
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  $request .= "\r\n\r\n";
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  if ($data) {
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    $request .= $data ."\r\n";
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  }
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  $result->request = $request;
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  fwrite($fp, $request);
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  // Fetch response.
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  $response = '';
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  while (!feof($fp) && $data = fread($fp, 1024)) {
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    $response .= $data;
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  }
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  fclose($fp);
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  // Parse response.
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  list($headers, $result->data) = explode("\r\n\r\n", $response, 2);
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  $headers = preg_split("/\r\n|\n|\r/", $headers);
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  list($protocol, $code, $text) = explode(' ', trim(array_shift($headers)), 3);
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  $result->headers = array();
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  // Parse headers.
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  while ($line = trim(array_shift($headers))) {
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    list($header, $value) = explode(':', $line, 2);
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    $result->headers[$header] = trim($value);
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  }
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  $responses = array(
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    100 => 'Continue', 101 => 'Switching Protocols',
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    200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content',
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    300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 307 => 'Temporary Redirect',
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    400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Time-out', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Large', 415 => 'Unsupported Media Type', 416 => 'Requested range not satisfiable', 417 => 'Expectation Failed',
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    500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Time-out', 505 => 'HTTP Version not supported'
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  );
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						|
  // RFC 2616 states that all unknown HTTP codes must be treated the same as
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  // the base code in their class.
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						|
  if (!isset($responses[$code])) {
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    $code = floor($code / 100) * 100;
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						|
  }
 | 
						|
 | 
						|
  switch ($code) {
 | 
						|
    case 200: // OK
 | 
						|
    case 304: // Not modified
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						|
      break;
 | 
						|
    case 301: // Moved permanently
 | 
						|
    case 302: // Moved temporarily
 | 
						|
    case 307: // Moved temporarily
 | 
						|
      $location = $result->headers['Location'];
 | 
						|
 | 
						|
      if ($retry) {
 | 
						|
        $result = drupal_http_request($result->headers['Location'], $headers, $method, $data, --$retry);
 | 
						|
        $result->redirect_code = $result->code;
 | 
						|
      }
 | 
						|
      $result->redirect_url = $location;
 | 
						|
 | 
						|
      break;
 | 
						|
    default:
 | 
						|
      $result->error = $text;
 | 
						|
  }
 | 
						|
 | 
						|
  $result->code = $code;
 | 
						|
  return $result;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * @} End of "HTTP handling".
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Log errors as defined by administrator
 | 
						|
 * Error levels:
 | 
						|
 *  1 = Log errors to database.
 | 
						|
 *  2 = Log errors to database and to screen.
 | 
						|
 */
 | 
						|
function error_handler($errno, $message, $filename, $line) {
 | 
						|
  if ($errno & (E_ALL ^ E_NOTICE)) {
 | 
						|
    $types = array(1 => 'error', 2 => 'warning', 4 => 'parse error', 8 => 'notice', 16 => 'core error', 32 => 'core warning', 64 => 'compile error', 128 => 'compile warning', 256 => 'user error', 512 => 'user warning', 1024 => 'user notice', 2048 => 'strict warning');
 | 
						|
    $entry = $types[$errno] .': '. $message .' in '. $filename .' on line '. $line .'.';
 | 
						|
 | 
						|
    if (variable_get('error_level', 1) == 1) {
 | 
						|
      print '<pre>'. $entry .'</pre>';
 | 
						|
    }
 | 
						|
 | 
						|
    watchdog('php', t('%message in %file on line %line.', array('%error' => $types[$errno], '%message' => $message, '%file' => $filename, '%line' => $line)), WATCHDOG_ERROR);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
function _fix_gpc_magic(&$item) {
 | 
						|
  if (is_array($item)) {
 | 
						|
    array_walk($item, '_fix_gpc_magic');
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    $item = stripslashes($item);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Correct double-escaping problems caused by "magic quotes" in some PHP
 | 
						|
 * installations.
 | 
						|
 */
 | 
						|
function fix_gpc_magic() {
 | 
						|
  static $fixed = false;
 | 
						|
  if (!$fixed && ini_get('magic_quotes_gpc')) {
 | 
						|
    array_walk($_GET, '_fix_gpc_magic');
 | 
						|
    array_walk($_POST, '_fix_gpc_magic');
 | 
						|
    array_walk($_COOKIE, '_fix_gpc_magic');
 | 
						|
    array_walk($_REQUEST, '_fix_gpc_magic');
 | 
						|
    $fixed = true;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * An unchecked checkbox is not present in $_POST so we fix it here by
 | 
						|
 * proving a default value of 0.  Also, with form_checkboxes() we expect
 | 
						|
 * an array, but HTML does not send the empty array.  This is also taken
 | 
						|
 * care off.
 | 
						|
 */
 | 
						|
function fix_checkboxes() {
 | 
						|
  if (isset($_POST['form_array'])) {
 | 
						|
    $_POST['edit'] = _fix_checkboxes($_POST['edit'], $_POST['form_array'], array());
 | 
						|
  }
 | 
						|
  if (isset($_POST['form_zero'])) {
 | 
						|
    $_POST['edit'] = _fix_checkboxes($_POST['edit'], $_POST['form_zero'], 0);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
function _fix_checkboxes($array1, $array2, $value) {
 | 
						|
  if (is_array($array2) && count($array2)) {
 | 
						|
    foreach ($array2 as $k => $v) {
 | 
						|
      if (is_array($v) && count($v)) {
 | 
						|
        $array1[$k] = _fix_checkboxes($array1[$k], $v, $value);
 | 
						|
      }
 | 
						|
      else if (!isset($array1[$k])) {
 | 
						|
        $array1[$k] = $value;
 | 
						|
      }
 | 
						|
    }
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    $array1 = $value;
 | 
						|
  }
 | 
						|
  return $array1;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * @name Conversion
 | 
						|
 * @{
 | 
						|
 * Converts data structures to different types.
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Convert an associative array to an anonymous object.
 | 
						|
 */
 | 
						|
function array2object($array) {
 | 
						|
  if (is_array($array)) {
 | 
						|
    $object = new StdClass();
 | 
						|
    foreach ($array as $key => $value) {
 | 
						|
      $object->$key = $value;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    $object = $array;
 | 
						|
  }
 | 
						|
 | 
						|
  return $object;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Convert an object to an associative array.
 | 
						|
 */
 | 
						|
function object2array($object) {
 | 
						|
  if (is_object($object)) {
 | 
						|
    foreach ($object as $key => $value) {
 | 
						|
      $array[$key] = $value;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    $array = $object;
 | 
						|
  }
 | 
						|
 | 
						|
  return $array;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * @} End of "Conversion".
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * @name Messages
 | 
						|
 * @{
 | 
						|
 * Frequently used messages.
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Return a string with an "access denied" message.
 | 
						|
 *
 | 
						|
 * Always consider whether to use drupal_access_denied() instead to return a
 | 
						|
 * proper (and customizable) 403 error.
 | 
						|
 */
 | 
						|
function message_access() {
 | 
						|
  return t('You are not authorized to access this page.');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Return a string with a "not applicable" message.
 | 
						|
 */
 | 
						|
function message_na() {
 | 
						|
  return t('n/a');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * @} End of "Messages".
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Initialize the localization system.
 | 
						|
 */
 | 
						|
function locale_initialize() {
 | 
						|
  global $user;
 | 
						|
 | 
						|
  if (function_exists('i18n_get_lang')) {
 | 
						|
    return i18n_get_lang();
 | 
						|
  }
 | 
						|
 | 
						|
  if (function_exists('locale')) {
 | 
						|
    $languages = locale_supported_languages();
 | 
						|
    $languages = $languages['name'];
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    // Ensure the locale/language is correctly returned, even without locale.module.
 | 
						|
    // Useful for e.g. XML/HTML 'lang' attributes.
 | 
						|
    $languages = array('en' => 'English');
 | 
						|
  }
 | 
						|
  if ($user->uid && $languages[$user->language]) {
 | 
						|
    return $user->language;
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    return key($languages);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Translate strings to the current locale.
 | 
						|
 *
 | 
						|
 * When using t(), try to put entire sentences and strings in one t() call.
 | 
						|
 * This makes it easier for translators. HTML markup within translation strings
 | 
						|
 * is acceptable, if necessary. The suggested syntax for a link embedded
 | 
						|
 * within a translation string is:
 | 
						|
 * @code
 | 
						|
 *   $msg = t('You must log in below or <a href="%url">create a new
 | 
						|
 *             account</a> before viewing the next page.', array('%url'
 | 
						|
 *             => url('user/register')));
 | 
						|
 * @endcode
 | 
						|
 * We suggest the same syntax for links to other sites. This makes it easy to
 | 
						|
 * change link URLs if needed (which happens often) without requiring updates
 | 
						|
 * to translations.
 | 
						|
 *
 | 
						|
 * @param $string
 | 
						|
 *   A string containing the English string to translate.
 | 
						|
 * @param $args
 | 
						|
 *   An associative array of replacements to make after translation. Incidences
 | 
						|
 *   of any key in this array are replaced with the corresponding value.
 | 
						|
 * @return
 | 
						|
 *   The translated string.
 | 
						|
 */
 | 
						|
function t($string, $args = 0) {
 | 
						|
  global $locale;
 | 
						|
  if (function_exists('locale') && $locale != 'en') {
 | 
						|
    $string = locale($string);
 | 
						|
  }
 | 
						|
 | 
						|
  if (!$args) {
 | 
						|
    return $string;
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    return strtr($string, $args);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Encode special characters in a plain-text string for display as HTML.
 | 
						|
 */
 | 
						|
function check_plain($text) {
 | 
						|
  return htmlspecialchars($text, ENT_QUOTES);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * @defgroup validation Input validation
 | 
						|
 * @{
 | 
						|
 * Functions to validate user input.
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Verify the syntax of the given e-mail address.
 | 
						|
 *
 | 
						|
 * Empty e-mail addresses are allowed. See RFC 2822 for details.
 | 
						|
 *
 | 
						|
 * @param $mail
 | 
						|
 *   A string containing an email address.
 | 
						|
 * @return
 | 
						|
 *   TRUE if the address is in a valid format.
 | 
						|
 */
 | 
						|
function valid_email_address($mail) {
 | 
						|
  $user = '[a-zA-Z0-9_\-\.\+\^!#\$%&*+\/\=\?\`\|\{\}~\']+';
 | 
						|
  $domain = '(?:(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.?)+';
 | 
						|
  $ipv4 = '[0-9]{1,3}(\.[0-9]{1,3}){3}';
 | 
						|
  $ipv6 = '[0-9a-fA-F]{1,4}(\:[0-9a-fA-F]{1,4}){7}';
 | 
						|
 | 
						|
  return preg_match("/^$user@($domain|(\[($ipv4|$ipv6)\]))$/", $mail);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Verify the syntax of the given URL.
 | 
						|
 *
 | 
						|
 * @param $url
 | 
						|
 *   The URL to verify.
 | 
						|
 * @param $absolute
 | 
						|
 *   Whether the URL is absolute (beginning with a scheme such as "http:").
 | 
						|
 * @return
 | 
						|
 *   TRUE if the URL is in a valid format.
 | 
						|
 */
 | 
						|
function valid_url($url, $absolute = FALSE) {
 | 
						|
  $allowed_characters = '[a-z0-9\/:_\-_\.\?\$,~=#&%\+]';
 | 
						|
  if ($absolute) {
 | 
						|
    return preg_match("/^(http|https|ftp):\/\/". $allowed_characters ."+$/i", $url);
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    return preg_match("/^". $allowed_characters ."+$/i", $url);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Validate data input by a user.
 | 
						|
 *
 | 
						|
 * Ensures that user data cannot be used to perform attacks on the site.
 | 
						|
 *
 | 
						|
 * @param $data
 | 
						|
 *   The input to check.
 | 
						|
 * @return
 | 
						|
 *   TRUE if the input data is acceptable.
 | 
						|
 */
 | 
						|
function valid_input_data($data) {
 | 
						|
  if (is_array($data) || is_object($data)) {
 | 
						|
    // Form data can contain a number of nested arrays.
 | 
						|
    foreach ($data as $key => $value) {
 | 
						|
      if (!valid_input_data($key) || !valid_input_data($value)) {
 | 
						|
        return FALSE;
 | 
						|
      }
 | 
						|
    }
 | 
						|
  }
 | 
						|
  else if (isset($data)) {
 | 
						|
    // Detect dangerous input data.
 | 
						|
 | 
						|
    // Decode all normal character entities.
 | 
						|
    $data = decode_entities($data, array('<', '&', '"'));
 | 
						|
 | 
						|
    // Check strings:
 | 
						|
    $match  = preg_match('/\Wjavascript\s*:/i', $data);
 | 
						|
    $match += preg_match('/\Wexpression\s*\(/i', $data);
 | 
						|
    $match += preg_match('/\Walert\s*\(/i', $data);
 | 
						|
 | 
						|
    // Check attributes:
 | 
						|
    $match += preg_match("/\W(dynsrc|datasrc|data|lowsrc|on[a-z]+)\s*=[^>]+?>/i", $data);
 | 
						|
 | 
						|
    // Check tags:
 | 
						|
    $match += preg_match("/<\s*(applet|script|object|style|embed|form|blink|meta|html|frame|iframe|layer|ilayer|head|frameset|xml)/i", $data);
 | 
						|
 | 
						|
    if ($match) {
 | 
						|
      watchdog('security', t('Terminated request because of suspicious input data: %data.', array('%data' => theme('placeholder', $data))));
 | 
						|
      return FALSE;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  return TRUE;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * @} End of "defgroup validation".
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Register an event for the current visitor (hostname/IP) to the flood control mechanism.
 | 
						|
 *
 | 
						|
 * @param $name
 | 
						|
 *   The name of the event.
 | 
						|
 */
 | 
						|
function flood_register_event($name) {
 | 
						|
  db_query("INSERT INTO {flood} (event, hostname, timestamp) VALUES ('%s', '%s', %d)", $name, $_SERVER['REMOTE_ADDR'], time());
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Check if the current visitor (hostname/IP) is allowed to proceed with the specified event.
 | 
						|
 * The user is allowed to proceed if he did not trigger the specified event more than
 | 
						|
 * $threshold times per hour.
 | 
						|
 *
 | 
						|
 * @param $name
 | 
						|
 *   The name of the event.
 | 
						|
 * @param $number
 | 
						|
 *   The maximum number of the specified event per hour (per visitor).
 | 
						|
 * @return
 | 
						|
 *   True if the user did not exceed the hourly threshold.  False otherwise.
 | 
						|
 */
 | 
						|
function flood_is_allowed($name, $threshold) {
 | 
						|
  $number = db_num_rows(db_query("SELECT event FROM {flood} WHERE event = '%s' AND hostname = '%s' AND timestamp > %d", $name, $_SERVER['REMOTE_ADDR'], time() - 3600));
 | 
						|
  return ($number < $threshold ? TRUE : FALSE);
 | 
						|
}
 | 
						|
 | 
						|
function check_file($filename) {
 | 
						|
  return is_uploaded_file($filename);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * @defgroup format Formatting
 | 
						|
 * @{
 | 
						|
 * Functions to format numbers, strings, dates, etc.
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Formats an RSS channel.
 | 
						|
 *
 | 
						|
 * Arbitrary elements may be added using the $args associative array.
 | 
						|
 */
 | 
						|
function format_rss_channel($title, $link, $description, $items, $language = 'en', $args = array()) {
 | 
						|
  // arbitrary elements may be added using the $args associative array
 | 
						|
 | 
						|
  $output = "<channel>\n";
 | 
						|
  $output .= ' <title>'. check_plain($title) ."</title>\n";
 | 
						|
  $output .= ' <link>'. check_url($link) ."</link>\n";
 | 
						|
  $output .= ' <description>'. check_plain($description) ."</description>\n";
 | 
						|
  $output .= ' <language>'. check_plain($language) ."</language>\n";
 | 
						|
  foreach ($args as $key => $value) {
 | 
						|
    $output .= ' <'. $key .'>'. check_plain($value) ."</$key>\n";
 | 
						|
  }
 | 
						|
  $output .= $items;
 | 
						|
  $output .= "</channel>\n";
 | 
						|
 | 
						|
  return $output;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a single RSS item.
 | 
						|
 *
 | 
						|
 * Arbitrary elements may be added using the $args associative array.
 | 
						|
 */
 | 
						|
function format_rss_item($title, $link, $description, $args = array()) {
 | 
						|
  $output = "<item>\n";
 | 
						|
  $output .= ' <title>'. check_plain($title) ."</title>\n";
 | 
						|
  $output .= ' <link>'. check_url($link) ."</link>\n";
 | 
						|
  $output .= ' <description>'. check_plain($description) ."</description>\n";
 | 
						|
  foreach ($args as $key => $value) {
 | 
						|
    if (is_array($value)) {
 | 
						|
      if ($value['key']) {
 | 
						|
        $output .= ' <'. $value['key'];
 | 
						|
        if (is_array($value['attributes'])) {
 | 
						|
          $output .= drupal_attributes($value['attributes']);
 | 
						|
        }
 | 
						|
 | 
						|
        if ($value['value']) {
 | 
						|
          $output .= '>'. $value['value'] .'</'. $value['key'] .">\n";
 | 
						|
        }
 | 
						|
        else {
 | 
						|
          $output .= " />\n";
 | 
						|
        }
 | 
						|
      }
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $output .= ' <'. $key .'>'. check_plain($value) ."</$key>\n";
 | 
						|
    }
 | 
						|
  }
 | 
						|
  $output .= "</item>\n";
 | 
						|
 | 
						|
  return $output;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a string containing a count of items.
 | 
						|
 *
 | 
						|
 * This function ensures that the string is pluralized correctly. Since t() is
 | 
						|
 * called by this function, make sure not to pass already-localized strings to it.
 | 
						|
 *
 | 
						|
 * @param $count
 | 
						|
 *   The item count to display.
 | 
						|
 * @param $singular
 | 
						|
 *   The string for the singular case. Please make sure it is clear this is
 | 
						|
 *   singular, to ease translation (e.g. use "1 new comment" instead of "1 new").
 | 
						|
 * @param $plural
 | 
						|
 *   The string for the plural case. Please make sure it is clear this is plural,
 | 
						|
 *   to ease translation. Use %count in place of the item count, as in "%count
 | 
						|
 *   new comments".
 | 
						|
 * @return
 | 
						|
 *   A translated string.
 | 
						|
 */
 | 
						|
function format_plural($count, $singular, $plural) {
 | 
						|
  if ($count == 1) return t($singular, array("%count" => $count));
 | 
						|
 | 
						|
  // get the plural index through the gettext formula
 | 
						|
  $index = (function_exists('locale')) ? locale_get_plural($count) : -1;
 | 
						|
  if ($index < 0) { // backward compatibility
 | 
						|
    return t($plural, array("%count" => $count));
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    switch ($index) {
 | 
						|
      case "0":
 | 
						|
        return t($singular, array("%count" => $count));
 | 
						|
      case "1":
 | 
						|
        return t($plural, array("%count" => $count));
 | 
						|
      default:
 | 
						|
        return t(strtr($plural, array("%count" => '%count['. $index .']')), array('%count['. $index .']' => $count));
 | 
						|
    }
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Generate a string representation for the given byte count.
 | 
						|
 *
 | 
						|
 * @param $size
 | 
						|
 *   The size in bytes.
 | 
						|
 * @return
 | 
						|
 *   A translated string representation of the size.
 | 
						|
 */
 | 
						|
function format_size($size) {
 | 
						|
  $suffix = t('bytes');
 | 
						|
  if ($size >= 1024) {
 | 
						|
    $size = round($size / 1024, 2);
 | 
						|
    $suffix = t('KB');
 | 
						|
  }
 | 
						|
  if ($size >= 1024) {
 | 
						|
    $size = round($size / 1024, 2);
 | 
						|
    $suffix = t('MB');
 | 
						|
  }
 | 
						|
  return t('%size %suffix', array('%size' => $size, '%suffix' => $suffix));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a time interval with the requested granularity.
 | 
						|
 *
 | 
						|
 * @param $timestamp
 | 
						|
 *   The length of the interval in seconds.
 | 
						|
 * @param $granularity
 | 
						|
 *   How many different units to display in the string.
 | 
						|
 * @return
 | 
						|
 *   A translated string representation of the interval.
 | 
						|
 */
 | 
						|
function format_interval($timestamp, $granularity = 2) {
 | 
						|
  $units = array('1 year|%count years' => 31536000, '1 week|%count weeks' => 604800, '1 day|%count days' => 86400, '1 hour|%count hours' => 3600, '1 min|%count min' => 60, '1 sec|%count sec' => 1);
 | 
						|
  $output = '';
 | 
						|
  foreach ($units as $key => $value) {
 | 
						|
    $key = explode('|', $key);
 | 
						|
    if ($timestamp >= $value) {
 | 
						|
      $output .= ($output ? ' ' : '') . format_plural(floor($timestamp / $value), $key[0], $key[1]);
 | 
						|
      $timestamp %= $value;
 | 
						|
      $granularity--;
 | 
						|
    }
 | 
						|
 | 
						|
    if ($granularity == 0) {
 | 
						|
      break;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  return $output ? $output : t('0 sec');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a date with the given configured format or a custom format string.
 | 
						|
 *
 | 
						|
 * Drupal allows administrators to select formatting strings for 'small',
 | 
						|
 * 'medium' and 'large' date formats. This function can handle these formats,
 | 
						|
 * as well as any custom format.
 | 
						|
 *
 | 
						|
 * @param $timestamp
 | 
						|
 *   The exact date to format, as a UNIX timestamp.
 | 
						|
 * @param $type
 | 
						|
 *   The format to use. Can be "small", "medium" or "large" for the preconfigured
 | 
						|
 *   date formats. If "custom" is specified, then $format is required as well.
 | 
						|
 * @param $format
 | 
						|
 *   A PHP date format string as required by date(). A backslash should be used
 | 
						|
 *   before a character to avoid interpreting the character as part of a date
 | 
						|
 *   format.
 | 
						|
 * @param $timezone
 | 
						|
 *   Time zone offset in seconds; if omitted, the user's time zone is used.
 | 
						|
 * @return
 | 
						|
 *   A translated date string in the requested format.
 | 
						|
 */
 | 
						|
function format_date($timestamp, $type = 'medium', $format = '', $timezone = NULL) {
 | 
						|
  if ($timezone === NULL) {
 | 
						|
    global $user;
 | 
						|
    if (variable_get('configurable_timezones', 1) && $user->uid && strlen($user->timezone)) {
 | 
						|
      $timezone = $user->timezone;
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $timezone = variable_get('date_default_timezone', 0);
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  $timestamp += $timezone;
 | 
						|
 | 
						|
  switch ($type) {
 | 
						|
    case 'small':
 | 
						|
      $format = variable_get('date_format_short', 'm/d/Y - H:i');
 | 
						|
      break;
 | 
						|
    case 'large':
 | 
						|
      $format = variable_get('date_format_long', 'l, F j, Y - H:i');
 | 
						|
      break;
 | 
						|
    case 'custom':
 | 
						|
      // No change to format
 | 
						|
      break;
 | 
						|
    case 'medium':
 | 
						|
    default:
 | 
						|
      $format = variable_get('date_format_medium', 'D, m/d/Y - H:i');
 | 
						|
  }
 | 
						|
 | 
						|
  $max = strlen($format);
 | 
						|
  $date = '';
 | 
						|
  for ($i = 0; $i < $max; $i++) {
 | 
						|
    $c = $format{$i};
 | 
						|
    if (strpos('AaDFlM', $c) !== false) {
 | 
						|
      $date .= t(gmdate($c, $timestamp));
 | 
						|
    }
 | 
						|
    else if (strpos('BdgGhHiIjLmnsStTUwWYyz', $c) !== false) {
 | 
						|
      $date .= gmdate($c, $timestamp);
 | 
						|
    }
 | 
						|
    else if ($c == 'r') {
 | 
						|
      $date .= format_date($timestamp - $timezone, 'custom', 'D, d M Y H:i:s O', $timezone);
 | 
						|
    }
 | 
						|
    else if ($c == 'O') {
 | 
						|
      $date .= sprintf('%s%02d%02d', ($timezone < 0 ? '-' : '+'), abs($timezone / 3600), abs($timezone % 3600) / 60);
 | 
						|
    }
 | 
						|
    else if ($c == 'Z') {
 | 
						|
      $date .= $timezone;
 | 
						|
    }
 | 
						|
    else if ($c == '\\') {
 | 
						|
      $date .= $format[++$i];
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $date .= $c;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  return $date;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a username.
 | 
						|
 *
 | 
						|
 * @param $object
 | 
						|
 *   The user object to format, usually returned from user_load().
 | 
						|
 * @return
 | 
						|
 *   A string containing an HTML link to the user's page if the passed object
 | 
						|
 *   suggests that this is a site user. Otherwise, only the username is returned.
 | 
						|
 */
 | 
						|
function format_name($object) {
 | 
						|
 | 
						|
  if ($object->uid && $object->name) {
 | 
						|
    // Shorten the name when it is too long or it will break many tables.
 | 
						|
    if (strlen($object->name) > 20) {
 | 
						|
      $name = truncate_utf8($object->name, 15) .'...';
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $name = $object->name;
 | 
						|
    }
 | 
						|
 | 
						|
    if (user_access('access user profiles')) {
 | 
						|
      $output = l($name, 'user/'. $object->uid, array('title' => t('View user profile.')));
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $output = $name;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  else if ($object->name) {
 | 
						|
    // Sometimes modules display content composed by people who are
 | 
						|
    // not registered members of the site (e.g. mailing list or news
 | 
						|
    // aggregator modules). This clause enables modules to display
 | 
						|
    // the true author of the content.
 | 
						|
    if ($object->homepage) {
 | 
						|
      $output = '<a href="'. $object->homepage .'">'. $object->name .'</a>';
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $output = $object->name;
 | 
						|
    }
 | 
						|
 | 
						|
    $output .= ' ('. t('not verified') .')';
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    $output = variable_get('anonymous', 'Anonymous');
 | 
						|
  }
 | 
						|
 | 
						|
  return $output;
 | 
						|
}
 | 
						|
/**
 | 
						|
 * @} End of "defgroup format".
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * @defgroup form Form generation
 | 
						|
 * @{
 | 
						|
 * Functions to enable output of HTML forms and form elements.
 | 
						|
 *
 | 
						|
 * Drupal uses these functions to achieve consistency in its form presentation,
 | 
						|
 * while at the same time simplifying code and reducing the amount of HTML that
 | 
						|
 * must be explicitly generated by modules.
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Generate a form from a set of form elements.
 | 
						|
 *
 | 
						|
 * @param $form
 | 
						|
 *   An HTML string containing one or more form elements.
 | 
						|
 * @param $method
 | 
						|
 *   The query method to use ("post" or "get").
 | 
						|
 * @param $action
 | 
						|
 *   The URL to send the form contents to, if not the current page.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of attributes to add to the form tag.
 | 
						|
 * @result
 | 
						|
 *   An HTML string with the contents of $form wrapped in a form tag.
 | 
						|
 */
 | 
						|
function form($form, $method = 'post', $action = NULL, $attributes = NULL) {
 | 
						|
  if (!$action) {
 | 
						|
    $action = request_uri();
 | 
						|
  }
 | 
						|
  // Anonymous div to satisfy XHTML compliancy.
 | 
						|
  return '<form action="'. check_url($action) .'" method="'. $method .'"'. drupal_attributes($attributes) .">\n<div>". $form ."\n</div></form>\n";
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * File an error against the form element with the specified name.
 | 
						|
 */
 | 
						|
function form_set_error($name, $message) {
 | 
						|
  $GLOBALS['form'][$name] = $message;
 | 
						|
  drupal_set_message($message, 'error');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Return an associative array of all errors.
 | 
						|
 */
 | 
						|
function form_get_errors() {
 | 
						|
  if (array_key_exists('form', $GLOBALS)) {
 | 
						|
    return $GLOBALS['form'];
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Return the error message filed against the form with the specified name.
 | 
						|
 */
 | 
						|
function _form_get_error($name) {
 | 
						|
  if (array_key_exists('form', $GLOBALS)) {
 | 
						|
    return $GLOBALS['form'][$name];
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
function _form_get_class($name, $required, $error) {
 | 
						|
  return $name. ($required ? ' required' : '') . ($error ? ' error' : '');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a general form item.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the form item.
 | 
						|
 * @param $value
 | 
						|
 *   The contents of the form item.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $id
 | 
						|
 *   A unique identifier for the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must fill in this form element before submitting the form.
 | 
						|
 * @param $error
 | 
						|
 *   An error message to display alongside the form element.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the form item.
 | 
						|
 */
 | 
						|
function form_item($title, $value, $description = NULL, $id = NULL, $required = FALSE, $error = FALSE) {
 | 
						|
  return theme('form_element', $title, $value, $description, $id, $required, $error);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a group of form items.
 | 
						|
 *
 | 
						|
 * @param $legend
 | 
						|
 *   The label for the form item group.
 | 
						|
 * @param $group
 | 
						|
 *   The form items within the group, as an HTML string.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item group.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the fieldset tag.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the form item group.
 | 
						|
 */
 | 
						|
function form_group($legend, $group, $description = NULL, $attributes = NULL) {
 | 
						|
  return '<fieldset' . drupal_attributes($attributes) .'>' . ($legend ? '<legend>'. $legend .'</legend>' : '') . $group . ($description ? '<div class="description">'. $description .'</div>' : '') . "</fieldset>\n";
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a radio button.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the radio button.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the button.
 | 
						|
 * @param $value
 | 
						|
 *   The value that the form element takes on when selected.
 | 
						|
 * @param $checked
 | 
						|
 *   Whether the button will be initially selected when the page is rendered.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the button.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must select this radio button before submitting the form.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the radio button.
 | 
						|
 */
 | 
						|
function form_radio($title, $name, $value = 1, $checked = FALSE, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  $element = '<input type="radio" class="'. _form_get_class('form-radio', $required, _form_get_error($name)) .'" name="edit['. $name .']" value="'. $value .'"'. ($checked ? ' checked="checked"' : '') . drupal_attributes($attributes) .' />';
 | 
						|
  if (!is_null($title)) {
 | 
						|
    $element = '<label class="option">'. $element .' '. $title .'</label>';
 | 
						|
  }
 | 
						|
  return theme('form_element', NULL, $element, $description, $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a set of radio buttons.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the radio buttons as a group.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the buttons.
 | 
						|
 * @param $value
 | 
						|
 *   The currently selected radio button's key.
 | 
						|
 * @param $options
 | 
						|
 *   An associative array of buttons to display. The keys in this array are
 | 
						|
 *   button values, while the values are the labels to display for each button.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must select a radio button before submitting the form.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to each button.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the radio button set.
 | 
						|
 */
 | 
						|
function form_radios($title, $name, $value, $options, $description = NULL, $required = FALSE, $attributes = NULL) {
 | 
						|
  if (count($options) > 0) {
 | 
						|
    $choices = '';
 | 
						|
    foreach ($options as $key => $choice) {
 | 
						|
      $choices .= '<label class="option"><input type="radio" class="form-radio" name="edit['. $name .']" value="'. $key .'"'. ($key == $value ? ' checked="checked"' : ''). drupal_attributes($attributes) .' /> '. $choice .'</label><br />';
 | 
						|
    }
 | 
						|
    return theme('form_element', $title, $choices, $description, NULL, $required, _form_get_error($name));
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a checkbox.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the checkbox.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the button.
 | 
						|
 * @param $value
 | 
						|
 *   The value that the form element takes on when selected.
 | 
						|
 * @param $checked
 | 
						|
 *   Whether the button will be initially selected when the page is rendered.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the button.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must check this box before submitting the form.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the checkbox.
 | 
						|
 */
 | 
						|
function form_checkbox($title, $name, $value = 1, $checked = FALSE, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  $element = '<input type="checkbox" class="'. _form_get_class('form-checkbox', $required, _form_get_error($name)) .'" name="edit['. $name .']" id="edit-'. form_clean_id($name).'" value="'. $value .'"'. ($checked ? ' checked="checked"' : '') . drupal_attributes($attributes) .' />';
 | 
						|
  if (!is_null($title)) {
 | 
						|
    $element = '<label class="option">'. $element .' '. $title .'</label>';
 | 
						|
  }
 | 
						|
  return form_hidden($name, 1, 'form_zero') . theme('form_element', NULL, $element, $description, $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a set of checkboxes.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the checkboxes as a group.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the buttons.
 | 
						|
 * @param $values
 | 
						|
 *   A linear array of keys of the initially checked boxes.
 | 
						|
 * @param $options
 | 
						|
 *   An associative array of buttons to display. The keys in this array are
 | 
						|
 *   button values, while the values are the labels to display for each button.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to each button.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must check a box before submitting the form.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the radio button set.
 | 
						|
 */
 | 
						|
function form_checkboxes($title, $name, $values, $options, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  if (count($options) > 0) {
 | 
						|
    if (!isset($values) || $values == 0) {
 | 
						|
      $values = array();
 | 
						|
    }
 | 
						|
    $choices = '';
 | 
						|
    foreach ($options as $key => $choice) {
 | 
						|
      $choices .= '<label class="option"><input type="checkbox" class="form-checkbox" name="edit['. $name .'][]" value="'. $key .'"'. (in_array($key, $values) ? ' checked="checked"' : ''). drupal_attributes($attributes) .' /> '. $choice .'</label><br />';
 | 
						|
    }
 | 
						|
    return form_hidden($name, 1, 'form_array') . theme('form_element', $title, $choices, $description, NULL, $required, _form_get_error($name));
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a single-line text field.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the text field.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the field.
 | 
						|
 * @param $value
 | 
						|
 *   The initial value for the field at page load time.
 | 
						|
 * @param $size
 | 
						|
 *   A measure of the visible size of the field (passed directly to HTML).
 | 
						|
 * @param $maxlength
 | 
						|
 *   The maximum number of characters that may be entered in the field.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must enter some text in the field.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the field.
 | 
						|
 */
 | 
						|
function form_textfield($title, $name, $value, $size, $maxlength, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  $size = $size ? ' size="'. $size .'"' : '';
 | 
						|
  return theme('form_element', $title, '<input type="text" maxlength="'. $maxlength .'" class="'. _form_get_class('form-text', $required, _form_get_error($name)) .'" name="edit['. $name .']" id="edit-'. form_clean_id($name) .'"'. $size .' value="'. check_plain($value) .'"'. drupal_attributes($attributes) .' />', $description, 'edit-'. $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a single-line text field that uses Ajax for autocomplete.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the text field.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the field.
 | 
						|
 * @param $value
 | 
						|
 *   The initial value for the field at page load time.
 | 
						|
 * @param $size
 | 
						|
 *   A measure of the visible size of the field (passed directly to HTML).
 | 
						|
 * @param $maxlength
 | 
						|
 *   The maximum number of characters that may be entered in the field.
 | 
						|
 * @param $callback_path
 | 
						|
 *   A drupal path for the Ajax autocomplete callback.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must enter some text in the field.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the field.
 | 
						|
 */
 | 
						|
function form_autocomplete($title, $name, $value, $size, $maxlength, $callback_path, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  drupal_add_js('misc/autocomplete.js');
 | 
						|
 | 
						|
  $size = $size ? ' size="'. $size .'"' : '';
 | 
						|
 | 
						|
  $output = theme('form_element', $title, '<input type="text" maxlength="'. $maxlength .'" class="'. _form_get_class('form-text form-autocomplete', $required, _form_get_error($name)) .'" name="edit['. $name .']" id="edit-'. form_clean_id($name) .'"'. $size .' value="'. check_plain($value) .'"'. drupal_attributes($attributes) .' />', $description, 'edit-'. $name, $required, _form_get_error($name));
 | 
						|
  $output .= '<input class="autocomplete" type="hidden" id="edit-'. form_clean_id($name) .'-autocomplete" value="'. check_url(url($callback_path, NULL, NULL, TRUE)) .'" disabled="disabled" />';
 | 
						|
 | 
						|
  return $output;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a single-line text field that does not display its contents visibly.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the text field.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the field.
 | 
						|
 * @param $value
 | 
						|
 *   The initial value for the field at page load time.
 | 
						|
 * @param $size
 | 
						|
 *   A measure of the visible size of the field (passed directly to HTML).
 | 
						|
 * @param $maxlength
 | 
						|
 *   The maximum number of characters that may be entered in the field.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must enter some text in the field.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the field.
 | 
						|
 */
 | 
						|
function form_password($title, $name, $value, $size, $maxlength, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  $size = $size ? ' size="'. $size .'"' : '';
 | 
						|
  return theme('form_element', $title, '<input type="password" class="'. _form_get_class('form-password', $required, _form_get_error($name)) .'" maxlength="'. $maxlength .'" name="edit['. $name .']" id="edit-'. form_clean_id($name) .'"'. $size .' value="'. check_plain($value) .'"'. drupal_attributes($attributes) .' />', $description, 'edit-'. $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a multiple-line text field.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the text field.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the field.
 | 
						|
 * @param $value
 | 
						|
 *   The initial value for the field at page load time.
 | 
						|
 * @param $cols
 | 
						|
 *   The width of the field, in columns of text.
 | 
						|
 * @param $rows
 | 
						|
 *   The height of the field, in rows of text.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must enter some text in the field.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the field.
 | 
						|
 */
 | 
						|
function form_textarea($title, $name, $value, $cols, $rows, $description = NULL, $attributes = NULL, $required = FALSE) {
 | 
						|
  $cols = $cols ? ' cols="'. $cols .'"' : '';
 | 
						|
  $pre = '';
 | 
						|
  $post = '';
 | 
						|
 | 
						|
  // optionally plug in a WYSIWYG editor
 | 
						|
  foreach (module_list() as $module_name) {
 | 
						|
    if (module_hook($module_name, 'textarea')) {
 | 
						|
      $pre  .= module_invoke($module_name, 'textarea', 'pre', $name);
 | 
						|
      $post .= module_invoke($module_name, 'textarea', 'post', $name);
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  return theme('form_element', $title, $pre .'<textarea'. $cols .' rows="'. $rows .'" name="edit['. $name .']" id="edit-'. form_clean_id($name) .'" class="'. _form_get_class('textarea', $required, _form_get_error($name)) .'"'. drupal_attributes($attributes) .'>'. check_plain($value) .'</textarea>'. $post, $description, 'edit-'. $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a dropdown menu or scrolling selection box.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the form element.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the form element.
 | 
						|
 * @param $value
 | 
						|
 *   The key of the currently selected item, or a linear array of keys of all the
 | 
						|
 *   currently selected items if multiple selections are allowed.
 | 
						|
 * @param $options
 | 
						|
 *   An associative array of buttons to display. The keys in this array are
 | 
						|
 *   button values, while the values are the labels to display for each button.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $extra
 | 
						|
 *   Additional HTML to inject into the select element tag.
 | 
						|
 * @param $multiple
 | 
						|
 *   Whether the user may select more than one item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must select a value before submitting the form.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the form element.
 | 
						|
 *
 | 
						|
 * It is possible to group options together; to do this, change the format of
 | 
						|
 * $options to an associative array in which the keys are group labels, and the
 | 
						|
 * values are associative arrays in the normal $options format.
 | 
						|
 */
 | 
						|
function form_select($title, $name, $value, $options, $description = NULL, $extra = 0, $multiple = FALSE, $required = FALSE) {
 | 
						|
  $select = '';
 | 
						|
  foreach ($options as $key => $choice) {
 | 
						|
    if (is_array($choice)) {
 | 
						|
      $select .= '<optgroup label="'. $key .'">';
 | 
						|
      foreach ($choice as $key => $choice) {
 | 
						|
        $select .= '<option value="'. $key .'"'. (is_array($value) ? (in_array($key, $value) ? ' selected="selected"' : '') : ($value == $key ? ' selected="selected"' : '')) .'>'. check_plain($choice) .'</option>';
 | 
						|
      }
 | 
						|
      $select .= '</optgroup>';
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $select .= '<option value="'. $key .'"'. (is_array($value) ? (in_array($key, $value) ? ' selected="selected"' : '') : ($value == $key ? ' selected="selected"' : '')) .'>'. check_plain($choice) .'</option>';
 | 
						|
    }
 | 
						|
  }
 | 
						|
  return theme('form_element', $title, '<select name="edit['. $name .']'. ($multiple ? '[]' : '') .'"'. ($multiple ? ' multiple="multiple" ' : '') . ($extra ? ' '. $extra : '') .' id="edit-'. form_clean_id($name) .'">'. $select .'</select>', $description, 'edit-'. $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a file upload field.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the file upload field.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the field.
 | 
						|
 * @param $size
 | 
						|
 *   A measure of the visible size of the field (passed directly to HTML).
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $required
 | 
						|
 *   Whether the user must upload a file to the field.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the field.
 | 
						|
 *
 | 
						|
 * For assistance with handling the uploaded file correctly, see the API
 | 
						|
 * provided by file.inc.
 | 
						|
 */
 | 
						|
function form_file($title, $name, $size, $description = NULL, $required = FALSE) {
 | 
						|
  return theme('form_element', $title, '<input type="file" class="'. _form_get_class('form-file', $required, _form_get_error($name)) .'" name="edit['. $name .']" id="edit-'. form_clean_id($name) .'" size="'. $size ."\" />\n", $description, 'edit-'. $name, $required, _form_get_error($name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Store data in a hidden form field.
 | 
						|
 *
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the field.
 | 
						|
 * @param $value
 | 
						|
 *   The stored data.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the hidden field.
 | 
						|
 *
 | 
						|
 * This function can be useful in retaining information between page requests,
 | 
						|
 * but be sure to validate the data on the receiving page as it is possible for
 | 
						|
 * an attacker to change the value before it is submitted.
 | 
						|
 */
 | 
						|
function form_hidden($name, $value, $edit = 'edit') {
 | 
						|
  return '<input type="hidden" name="'. $edit .'['. $name .']" value="'. check_plain($value) ."\" />\n";
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format an action button.
 | 
						|
 *
 | 
						|
 * @param $value
 | 
						|
 *   Both the label for the button, and the value passed to the target page
 | 
						|
 *   when this button is clicked.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the button.
 | 
						|
 * @param $type
 | 
						|
 *   What type to pass to the HTML input tag.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the form item.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the button.
 | 
						|
 */
 | 
						|
function form_button($value, $name = 'op', $type = 'submit', $attributes = NULL) {
 | 
						|
  return '<input type="'. $type .'" class="form-'. $type .'" name="'. $name .'" value="'. check_plain($value) .'" '. drupal_attributes($attributes) ." />\n";
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a form submit button.
 | 
						|
 *
 | 
						|
 * @param $value
 | 
						|
 *   Both the label for the button, and the value passed to the target page
 | 
						|
 *   when this button is clicked.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the button.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to add to the form item.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the button.
 | 
						|
 */
 | 
						|
function form_submit($value, $name = 'op', $attributes = NULL) {
 | 
						|
  return form_button($value, $name, 'submit', $attributes);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format a weight selection menu.
 | 
						|
 *
 | 
						|
 * @param $title
 | 
						|
 *   The label for the form element.
 | 
						|
 * @param $name
 | 
						|
 *   The internal name used to refer to the form element.
 | 
						|
 * @param $value
 | 
						|
 *   The selected weight value at page load time.
 | 
						|
 * @param $delta
 | 
						|
 *   The largest in absolute value the weight can be. For example, if set to 10,
 | 
						|
 *   weights could range from -10 to 10 inclusive.
 | 
						|
 * @param $description
 | 
						|
 *   Explanatory text to display after the form item.
 | 
						|
 * @param $extra
 | 
						|
 *   Additional HTML to inject into the select element tag.
 | 
						|
 * @return
 | 
						|
 *   A themed HTML string representing the form element.
 | 
						|
 */
 | 
						|
function form_weight($title = NULL, $name = 'weight', $value = 0, $delta = 10, $description = NULL, $extra = 0) {
 | 
						|
  for ($n = (-1 * $delta); $n <= $delta; $n++) {
 | 
						|
    $weights[$n] = $n;
 | 
						|
  }
 | 
						|
 | 
						|
  return form_select($title, $name, $value, $weights, $description, $extra);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Remove invalid characters from an HTML ID attribute string
 | 
						|
 *
 | 
						|
 * @param $id
 | 
						|
 *   The ID to clean
 | 
						|
 * @return
 | 
						|
 *   The cleaned ID
 | 
						|
 */
 | 
						|
function form_clean_id($id = NULL) {
 | 
						|
  $id = str_replace('][', '-', $id);
 | 
						|
  return $id;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * @} End of "defgroup form".
 | 
						|
 */
 | 
						|
 | 
						|
/**
 | 
						|
 * Generate an internal Drupal URL.
 | 
						|
 *
 | 
						|
 * @param $path
 | 
						|
 *   The Drupal path being linked to, such as "admin/node".
 | 
						|
 * @param $query
 | 
						|
 *   A query string to append to the link.
 | 
						|
 * @param $fragment
 | 
						|
 *   A fragment identifier (named anchor) to append to the link.
 | 
						|
 * @param $absolute
 | 
						|
 *   Whether to force the output to be an absolute link (beginning with http:).
 | 
						|
 *   Useful for links that will be displayed outside the site, such as in an RSS feed.
 | 
						|
 * @return
 | 
						|
 *   an HTML string containing a link to the given path.
 | 
						|
 *
 | 
						|
 * When creating links in modules, consider whether l() could be a better
 | 
						|
 * alternative than url().
 | 
						|
 */
 | 
						|
function url($path = NULL, $query = NULL, $fragment = NULL, $absolute = FALSE) {
 | 
						|
  global $base_url;
 | 
						|
 | 
						|
  static $script;
 | 
						|
 | 
						|
  if (empty($script)) {
 | 
						|
    // On some web servers, such as IIS, we can't omit "index.php".  So, we
 | 
						|
    // generate "index.php?q=foo" instead of "?q=foo" on anything that is not
 | 
						|
    // Apache.
 | 
						|
    $script = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') === false) ? 'index.php' : '';
 | 
						|
  }
 | 
						|
 | 
						|
  $path = drupal_get_path_alias($path);
 | 
						|
 | 
						|
  if (isset($fragment)) {
 | 
						|
    $fragment = '#'. $fragment;
 | 
						|
  }
 | 
						|
 | 
						|
  $base = ($absolute ? $base_url .'/' : '');
 | 
						|
 | 
						|
  if (variable_get('clean_url', '0') == '0') {
 | 
						|
    if (isset($path)) {
 | 
						|
      if (isset($query)) {
 | 
						|
        return $base . $script .'?q='. $path .'&'. $query . $fragment;
 | 
						|
      }
 | 
						|
      else {
 | 
						|
        return $base . $script .'?q='. $path . $fragment;
 | 
						|
      }
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      if (isset($query)) {
 | 
						|
        return $base . $script .'?'. $query . $fragment;
 | 
						|
      }
 | 
						|
      else {
 | 
						|
        return $base . $fragment;
 | 
						|
      }
 | 
						|
    }
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    if (isset($path)) {
 | 
						|
      if (isset($query)) {
 | 
						|
        return $base . $path .'?'. $query . $fragment;
 | 
						|
      }
 | 
						|
      else {
 | 
						|
        return $base . $path . $fragment;
 | 
						|
      }
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      if (isset($query)) {
 | 
						|
        return $base . $script .'?'. $query . $fragment;
 | 
						|
      }
 | 
						|
      else {
 | 
						|
        return $base . $fragment;
 | 
						|
      }
 | 
						|
    }
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format an attribute string to insert in a tag.
 | 
						|
 *
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes.
 | 
						|
 * @return
 | 
						|
 *   An HTML string ready for insertion in a tag.
 | 
						|
 */
 | 
						|
function drupal_attributes($attributes = array()) {
 | 
						|
  if (is_array($attributes)) {
 | 
						|
    $t = array();
 | 
						|
    foreach ($attributes as $key => $value) {
 | 
						|
      $t[] = $key .'="'. check_plain($value) .'"';
 | 
						|
    }
 | 
						|
    return ' '. implode($t, ' ');
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Format an internal Drupal link.
 | 
						|
 *
 | 
						|
 * This function correctly handles aliased paths, and allows themes to highlight
 | 
						|
 * links to the current page correctly, so all internal links output by modules
 | 
						|
 * should be generated by this function if possible.
 | 
						|
 *
 | 
						|
 * @param $text
 | 
						|
 *   The text to be enclosed with the anchor tag.
 | 
						|
 * @param $path
 | 
						|
 *   The Drupal path being linked to, such as "admin/node". Note, this must be a
 | 
						|
 *   system URL as the url() function will generate the alias.
 | 
						|
 * @param $attributes
 | 
						|
 *   An associative array of HTML attributes to apply to the anchor tag.
 | 
						|
 * @param $query
 | 
						|
 *   A query string to append to the link.
 | 
						|
 * @param $fragment
 | 
						|
 *   A fragment identifier (named anchor) to append to the link.
 | 
						|
 * @param $absolute
 | 
						|
 *   Whether to force the output to be an absolute link (beginning with http:).
 | 
						|
 *   Useful for links that will be displayed outside the site, such as in an RSS feed.
 | 
						|
 * @param $html
 | 
						|
 *   Whether the title is HTML, or just plain-text.
 | 
						|
 * @return
 | 
						|
 *   an HTML string containing a link to the given path.
 | 
						|
 */
 | 
						|
function l($text, $path, $attributes = array(), $query = NULL, $fragment = NULL, $absolute = FALSE, $html = FALSE) {
 | 
						|
  if ($path == $_GET['q']) {
 | 
						|
    if (isset($attributes['class'])) {
 | 
						|
      $attributes['class'] .= ' active';
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      $attributes['class'] = 'active';
 | 
						|
    }
 | 
						|
  }
 | 
						|
  return '<a href="'. check_url(url($path, $query, $fragment, $absolute)) .'"'. drupal_attributes($attributes) .'>'. ($html ? $text : check_plain($text)) .'</a>';
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Perform end-of-request tasks.
 | 
						|
 *
 | 
						|
 * This function sets the page cache if appropriate, and allows modules to
 | 
						|
 * react to the closing of the page by calling hook_exit().
 | 
						|
 */
 | 
						|
function drupal_page_footer() {
 | 
						|
  if (variable_get('cache', 0)) {
 | 
						|
    page_set_cache();
 | 
						|
  }
 | 
						|
 | 
						|
  module_invoke_all('exit');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Form an associative array from a linear array.
 | 
						|
 *
 | 
						|
 * This function walks through the provided array and constructs an associative
 | 
						|
 * array out of it. The keys of the resulting array will be the values of the
 | 
						|
 * input array. The values will be the same as the keys unless a function is
 | 
						|
 * specified, in which case the output of the function is used for the values
 | 
						|
 * instead.
 | 
						|
 *
 | 
						|
 * @param $array
 | 
						|
 *   A linear array.
 | 
						|
 * @param $function
 | 
						|
 *   The name of a function to apply to all values before output.
 | 
						|
 * @result
 | 
						|
 *   An associative array.
 | 
						|
 */
 | 
						|
function drupal_map_assoc($array, $function = NULL) {
 | 
						|
  if (!isset($function)) {
 | 
						|
    $result = array();
 | 
						|
    foreach ($array as $value) {
 | 
						|
      $result[$value] = $value;
 | 
						|
    }
 | 
						|
    return $result;
 | 
						|
  }
 | 
						|
  elseif (function_exists($function)) {
 | 
						|
    $result = array();
 | 
						|
    foreach($array as $value) {
 | 
						|
      $result[$value] = $function($value);
 | 
						|
    }
 | 
						|
    return $result;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Prepare a new XML parser.
 | 
						|
 *
 | 
						|
 * This is a wrapper around xml_parser_create() which extracts the encoding from
 | 
						|
 * the XML data first and sets the output encoding to UTF-8. This function should
 | 
						|
 * be used instead of xml_parser_create(), because PHP's XML parser doesn't check
 | 
						|
 * the input encoding itself.
 | 
						|
 *
 | 
						|
 * This is also where unsupported encodings will be converted.
 | 
						|
 * Callers should take this into account: $data might have been changed after
 | 
						|
 * the call.
 | 
						|
 *
 | 
						|
 * @param &$data
 | 
						|
 *   The XML data which will be parsed later.
 | 
						|
 * @return
 | 
						|
 *   An XML parser object.
 | 
						|
 */
 | 
						|
function drupal_xml_parser_create(&$data) {
 | 
						|
  // Default XML encoding is UTF-8
 | 
						|
  $encoding = 'utf-8';
 | 
						|
  $bom = false;
 | 
						|
 | 
						|
  // Check for UTF-8 byte order mark (PHP5's XML parser doesn't handle it).
 | 
						|
  if (!strncmp($data, "\xEF\xBB\xBF", 3)) {
 | 
						|
    $bom = true;
 | 
						|
    $data = substr($data, 3);
 | 
						|
  }
 | 
						|
 | 
						|
  // Check for an encoding declaration in the XML prolog if no BOM was found.
 | 
						|
  if (!$bom && ereg('^<\?xml[^>]+encoding="([^"]+)"', $data, $match)) {
 | 
						|
    $encoding = $match[1];
 | 
						|
  }
 | 
						|
 | 
						|
  // Unsupported encodings are converted here into UTF-8.
 | 
						|
  $php_supported = array('utf-8', 'iso-8859-1', 'us-ascii');
 | 
						|
  if (!in_array(strtolower($encoding), $php_supported)) {
 | 
						|
    $out = drupal_convert_to_utf8($data, $encoding);
 | 
						|
    if ($out !== false) {
 | 
						|
      $data = $out;
 | 
						|
      $encoding = 'utf-8';
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      watchdog('php', t("Could not convert XML encoding '%s' to UTF-8.", array('%s' => $encoding)), WATCHDOG_WARNING);
 | 
						|
      return 0;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  $xml_parser = xml_parser_create($encoding);
 | 
						|
  xml_parser_set_option($xml_parser, XML_OPTION_TARGET_ENCODING, 'utf-8');
 | 
						|
  return $xml_parser;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Convert data to UTF-8
 | 
						|
 *
 | 
						|
 * Requires the iconv, GNU recode or mbstring PHP extension.
 | 
						|
 *
 | 
						|
 * @param $data
 | 
						|
 *   The data to be converted.
 | 
						|
 * @param $encoding
 | 
						|
 *   The encoding that the data is in
 | 
						|
 * @return
 | 
						|
 *   Converted data or FALSE.
 | 
						|
 */
 | 
						|
function drupal_convert_to_utf8($data, $encoding) {
 | 
						|
  if (function_exists('iconv')) {
 | 
						|
    $out = @iconv($encoding, 'utf-8', $data);
 | 
						|
  }
 | 
						|
  else if (function_exists('mb_convert_encoding')) {
 | 
						|
    $out = @mb_convert_encoding($data, 'utf-8', $encoding);
 | 
						|
  }
 | 
						|
  else if (function_exists('recode_string')) {
 | 
						|
    $out = @recode_string($encoding .'..utf-8', $data);
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    watchdog('php', t("Unsupported encoding '%s'. Please install iconv, GNU recode or mbstring for PHP.", array('%s' => $encoding)), WATCHDOG_ERROR);
 | 
						|
    return FALSE;
 | 
						|
  }
 | 
						|
 | 
						|
  return $out;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Truncate a UTF-8-encoded string safely.
 | 
						|
 *
 | 
						|
 * If the end position is in the middle of a UTF-8 sequence, it scans backwards
 | 
						|
 * until the beginning of the byte sequence.
 | 
						|
 *
 | 
						|
 * Use this function whenever you want to chop off a string at an unsure
 | 
						|
 * location. On the other hand, if you're sure that you're splitting on a
 | 
						|
 * character boundary (e.g. after using strpos() or similar), you can safely use
 | 
						|
 * substr() instead.
 | 
						|
 *
 | 
						|
 * @param $string
 | 
						|
 *   The string to truncate.
 | 
						|
 * @param $len
 | 
						|
 *   An upper limit on the returned string length.
 | 
						|
 * @param $wordsafe
 | 
						|
 *   Flag to truncate at nearest space. Defaults to FALSE.
 | 
						|
 * @return
 | 
						|
 *   The truncated string.
 | 
						|
 */
 | 
						|
function truncate_utf8($string, $len, $wordsafe = FALSE) {
 | 
						|
  $slen = strlen($string);
 | 
						|
  if ($slen <= $len) {
 | 
						|
    return $string;
 | 
						|
  }
 | 
						|
  if ($wordsafe) {
 | 
						|
    while (($string[--$len] != ' ') && ($len > 0)) {};
 | 
						|
  }
 | 
						|
  if ((ord($string[$len]) < 0x80) || (ord($string[$len]) >= 0xC0)) {
 | 
						|
    return substr($string, 0, $len);
 | 
						|
  }
 | 
						|
  while (ord($string[--$len]) < 0xC0) {};
 | 
						|
  return substr($string, 0, $len);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Encodes MIME/HTTP header values that contain non-ASCII, UTF-8 encoded
 | 
						|
 * characters.
 | 
						|
 *
 | 
						|
 * For example, mime_header_encode('tést.txt') returns "=?UTF-8?B?dMOpc3QudHh0?=".
 | 
						|
 *
 | 
						|
 * See http://www.rfc-editor.org/rfc/rfc2047.txt for more information.
 | 
						|
 *
 | 
						|
 * Notes:
 | 
						|
 * - Only encode strings that contain non-ASCII characters.
 | 
						|
 * - We progressively cut-off a chunk with truncate_utf8(). This is to ensure
 | 
						|
 *   each chunk starts and ends on a character boundary.
 | 
						|
 * - Using \n as the chunk separator may cause problems on some systems and may
 | 
						|
 *   have to be changed to \r\n or \r.
 | 
						|
 */
 | 
						|
function mime_header_encode($string) {
 | 
						|
  if (!preg_match('/^[\x20-\x7E]*$/', $string)) {
 | 
						|
    $chunk_size = 47; // floor((75 - strlen("=?UTF-8?B??=")) * 0.75);
 | 
						|
    $len = strlen($string);
 | 
						|
    $output = '';
 | 
						|
    while ($len > 0) {
 | 
						|
      $chunk = truncate_utf8($string, $chunk_size);
 | 
						|
      $output .= ' =?UTF-8?B?'. base64_encode($chunk) ."?=\n";
 | 
						|
      $c = strlen($chunk);
 | 
						|
      $string = substr($string, $c);
 | 
						|
      $len -= $c;
 | 
						|
    }
 | 
						|
    return trim($output);
 | 
						|
  }
 | 
						|
  return $string;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Decode all HTML entities (including numerical ones) to regular UTF-8 bytes.
 | 
						|
 * Double-escaped entities will only be decoded once ("&lt;" becomes "<", not "<").
 | 
						|
 *
 | 
						|
 * @param $text
 | 
						|
 *   The text to decode entities in.
 | 
						|
 * @param $exclude
 | 
						|
 *   An array of characters which should not be decoded. For example,
 | 
						|
 *   array('<', '&', '"'). This affects both named and numerical entities.
 | 
						|
 */
 | 
						|
function decode_entities($text, $exclude = array()) {
 | 
						|
  static $table;
 | 
						|
  // We store named entities in a table for quick processing.
 | 
						|
  if (!isset($table)) {
 | 
						|
    // Get all named HTML entities.
 | 
						|
    $table = array_flip(get_html_translation_table(HTML_ENTITIES));
 | 
						|
    // PHP gives us ISO-8859-1 data, we need UTF-8.
 | 
						|
    $table = array_map('utf8_encode', $table);
 | 
						|
    // Add apostrophe (XML)
 | 
						|
    $table['''] = "'";
 | 
						|
  }
 | 
						|
  $newtable = array_diff($table, $exclude);
 | 
						|
 | 
						|
  // Use a regexp to select all entities in one pass, to avoid decoding double-escaped entities twice.
 | 
						|
  return preg_replace('/&(#x?)?([A-Za-z0-9]+);/e', '_decode_entities("$1", "$2", "$0", $newtable, $exclude)', $text);
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Helper function for decode_entities
 | 
						|
 */
 | 
						|
function _decode_entities($prefix, $codepoint, $original, &$table, &$exclude) {
 | 
						|
  // Named entity
 | 
						|
  if (!$prefix) {
 | 
						|
    if (isset($table[$original])) {
 | 
						|
      return $table[$original];
 | 
						|
    }
 | 
						|
    else {
 | 
						|
      return $original;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  // Hexadecimal numerical entity
 | 
						|
  if ($prefix == '#x') {
 | 
						|
    $codepoint = base_convert($codepoint, 16, 10);
 | 
						|
  }
 | 
						|
  // Encode codepoint as UTF-8 bytes
 | 
						|
  if ($codepoint < 0x80) {
 | 
						|
    $str = chr($codepoint);
 | 
						|
  }
 | 
						|
  else if ($codepoint < 0x800) {
 | 
						|
    $str = chr(0xC0 | ($codepoint >> 6))
 | 
						|
         . chr(0x80 | ($codepoint & 0x3F));
 | 
						|
  }
 | 
						|
  else if ($codepoint < 0x10000) {
 | 
						|
    $str = chr(0xE0 | ( $codepoint >> 12))
 | 
						|
         . chr(0x80 | (($codepoint >> 6) & 0x3F))
 | 
						|
         . chr(0x80 | ( $codepoint       & 0x3F));
 | 
						|
  }
 | 
						|
  else if ($codepoint < 0x200000) {
 | 
						|
    $str = chr(0xF0 | ( $codepoint >> 18))
 | 
						|
         . chr(0x80 | (($codepoint >> 12) & 0x3F))
 | 
						|
         . chr(0x80 | (($codepoint >> 6)  & 0x3F))
 | 
						|
         . chr(0x80 | ( $codepoint        & 0x3F));
 | 
						|
  }
 | 
						|
  // Check for excluded characters
 | 
						|
  if (in_array($str, $exclude)) {
 | 
						|
    return $original;
 | 
						|
  }
 | 
						|
  else {
 | 
						|
    return $str;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Count the amount of characters in a UTF-8 string. This is less than or
 | 
						|
 * equal to the byte count.
 | 
						|
 */
 | 
						|
function string_length(&$text) {
 | 
						|
  return strlen(preg_replace("/[\x80-\xBF]/", '', $text));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Evaluate a string of PHP code.
 | 
						|
 *
 | 
						|
 * This is a wrapper around PHP's eval(). It uses output buffering to capture both
 | 
						|
 * returned and printed text. Unlike eval(), we require code to be surrounded by
 | 
						|
 * <?php ?> tags; in other words, we evaluate the code as if it were a stand-alone
 | 
						|
 * PHP file.
 | 
						|
 *
 | 
						|
 * Using this wrapper also ensures that the PHP code which is evaluated can not
 | 
						|
 * overwrite any variables in the calling code, unlike a regular eval() call.
 | 
						|
 *
 | 
						|
 * @param $code
 | 
						|
 *   The code to evaluate.
 | 
						|
 * @return
 | 
						|
 *   A string containing the printed output of the code, followed by the returned
 | 
						|
 *   output of the code.
 | 
						|
 */
 | 
						|
function drupal_eval($code) {
 | 
						|
  ob_start();
 | 
						|
  print eval('?>'. $code);
 | 
						|
  $output = ob_get_contents();
 | 
						|
  ob_end_clean();
 | 
						|
  return $output;
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Returns the path to a system item (module, theme, etc.).
 | 
						|
 *
 | 
						|
 * @param $type
 | 
						|
 *   The type of the item (i.e. theme, theme_engine, module).
 | 
						|
 * @param $name
 | 
						|
 *   The name of the item for which the path is requested.
 | 
						|
 *
 | 
						|
 * @return
 | 
						|
 *   The path to the requested item.
 | 
						|
 */
 | 
						|
function drupal_get_path($type, $name) {
 | 
						|
  return dirname(drupal_get_filename($type, $name));
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Provide a substitute clone() function for PHP4.
 | 
						|
 */
 | 
						|
if (version_compare(phpversion(), '5.0') < 0) {
 | 
						|
  eval('
 | 
						|
    function clone($object) {
 | 
						|
      return $object;
 | 
						|
    }
 | 
						|
  ');
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Add a <link> tag to the page's HEAD.
 | 
						|
 */
 | 
						|
function drupal_add_link($attributes) {
 | 
						|
  drupal_set_html_head('<link'. drupal_attributes($attributes) ." />\n");
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
/**
 | 
						|
 * Add a JavaScript file to the output.
 | 
						|
 *
 | 
						|
 * The first time this function is invoked per page request,
 | 
						|
 * it adds "misc/drupal.js" to the output. Other scripts
 | 
						|
 * depends on the 'killswitch' inside it.
 | 
						|
 */
 | 
						|
function drupal_add_js($file) {
 | 
						|
  static $sent = array();
 | 
						|
  if (!isset($sent['misc/drupal.js'])) {
 | 
						|
    drupal_set_html_head('<script type="text/javascript" src="misc/drupal.js"></script>');
 | 
						|
    $sent['misc/drupal.js'] = true;
 | 
						|
  }
 | 
						|
  if (!isset($sent[$file])) {
 | 
						|
    drupal_set_html_head('<script type="text/javascript" src="'. check_url($file) .'"></script>');
 | 
						|
    $sent[$file] = true;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
/**
 | 
						|
 * Implode a PHP array into a string that can be decoded by the autocomplete JS routines.
 | 
						|
 *
 | 
						|
 * Items are separated by double pipes. Each item consists of a key-value pair
 | 
						|
 * separated by single pipes. Entities are used to ensure pipes in the strings
 | 
						|
 * pass unharmed.
 | 
						|
 *
 | 
						|
 * The key is what is filled in in the text-box (plain-text), the value is what
 | 
						|
 * is displayed in the suggestion list (HTML).
 | 
						|
 */
 | 
						|
function drupal_implode_autocomplete($array) {
 | 
						|
  $output = array();
 | 
						|
  foreach ($array as $k => $v) {
 | 
						|
    $output[] = str_replace('|', '|', $k) .'|'. str_replace('|', '|', $v);
 | 
						|
  }
 | 
						|
  return implode('||', $output);
 | 
						|
}
 | 
						|
 | 
						|
// Set the Drupal custom error handler.
 | 
						|
set_error_handler('error_handler');
 | 
						|
 | 
						|
include_once 'includes/theme.inc';
 | 
						|
include_once 'includes/pager.inc';
 | 
						|
include_once 'includes/menu.inc';
 | 
						|
include_once 'includes/tablesort.inc';
 | 
						|
include_once 'includes/file.inc';
 | 
						|
include_once 'includes/xmlrpc.inc';
 | 
						|
include_once 'includes/image.inc';
 | 
						|
 | 
						|
// Emit the correct charset HTTP header.
 | 
						|
drupal_set_header('Content-Type: text/html; charset=utf-8');
 | 
						|
 | 
						|
// Initialize $_GET['q'] prior to loading modules and invoking hook_init().
 | 
						|
if (!empty($_GET['q'])) {
 | 
						|
  $_GET['q'] = drupal_get_normal_path(trim($_GET['q'], '/'));
 | 
						|
}
 | 
						|
else {
 | 
						|
  $_GET['q'] = drupal_get_normal_path(variable_get('site_frontpage', 'node'));
 | 
						|
}
 | 
						|
 | 
						|
// Initialize all enabled modules.
 | 
						|
module_init();
 | 
						|
 | 
						|
if (!user_access('bypass input data check')) {
 | 
						|
  // We can't use $_REQUEST because it consists of the contents of $_POST,
 | 
						|
  // $_GET and $_COOKIE: if any of the input arrays share a key, only one
 | 
						|
  // value will be verified.
 | 
						|
  if (!valid_input_data($_GET)
 | 
						|
   || !valid_input_data($_POST)
 | 
						|
   || !valid_input_data($_COOKIE)
 | 
						|
   || !valid_input_data($_FILES)) {
 | 
						|
    die('Terminated request because of suspicious input data.');
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
// Initialize the localization system.
 | 
						|
$locale = locale_initialize();
 | 
						|
 | 
						|
?>
 |