1383 lines
41 KiB
PHP
1383 lines
41 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 content for a specified region.
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*
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* @param $region
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* Page region the content is assigned to.
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*
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* @param $data
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* Content to be set.
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*/
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function drupal_set_content($region = null, $data = null) {
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static $content = array();
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if (!is_null($region) && !is_null($data)) {
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$content[$region][] = $data;
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}
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return $content;
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}
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/**
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* Get assigned content.
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*
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* @param $region
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* A specified region to fetch content for. If null, all regions will be returned.
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*
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* @param $delimiter
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* Content to be inserted between exploded array elements.
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*/
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function drupal_get_content($region = NULL, $delimiter = ' ') {
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$content = drupal_set_content();
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if (isset($region)) {
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if (isset($content[$region]) && is_array($content[$region])) {
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return implode($delimiter, $content[$region]);
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}
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}
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else {
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foreach (array_keys($content) as $region) {
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if (is_array($content[$region])) {
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$content[$region] = implode($delimiter, $content[$region]);
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}
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}
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return $content;
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}
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}
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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 $stored_breadcrumb;
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if (!is_null($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 (is_null($breadcrumb)) {
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$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 $stored_head;
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}
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/**
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* Retrieve output to be displayed in the head tag of the HTML page.
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*/
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function drupal_get_html_head() {
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$output = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n";
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$output .= theme('stylesheet_import', base_path() .'misc/drupal.css');
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return $output . drupal_set_html_head();
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}
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/**
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* Reset the static variable which holds the aliases mapped for this request.
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*/
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function drupal_clear_path_cache() {
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drupal_lookup_path('wipe');
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}
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/**
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* Set an HTTP response header for the current page.
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*/
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function drupal_set_header($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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* Parse an array into a valid urlencoded query string.
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*
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* @param $query
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* The array to be processed e.g. $_GET
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* @param $exclude
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* The array filled with keys to be excluded. Use parent[child] to exclude nested items.
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* @param $urlencode
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* If TRUE, the keys and values are both urlencoded.
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* @param $parent
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* Should not be passed, only used in recursive calls
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* @return
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* urlencoded string which can be appended to/as the URL query string
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*/
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function drupal_query_string_encode($query, $exclude = array(), $parent = '') {
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$params = array();
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foreach ($query as $key => $value) {
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$key = urlencode($key);
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if ($parent) {
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$key = $parent .'['. $key .']';
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}
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if (in_array($key, $exclude)) {
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continue;
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}
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if (is_array($value)) {
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$params[] = drupal_query_string_encode($value, $exclude, $key);
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}
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else {
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$params[] = $key .'='. urlencode($value);
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}
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}
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return implode('&', $params);
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}
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/**
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* Prepare a destination query string for use in combination with
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* drupal_goto(). Used to direct the user back to the referring page
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* after completing a form. By default the current URL is returned.
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* If a destination exists in the previous request, that destination
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* is returned. As such, a destination can persist across multiple
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* pages.
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*
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* @see drupal_goto()
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*/
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function drupal_get_destination() {
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if (isset($_REQUEST['destination'])) {
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return 'destination='. urlencode($_REQUEST['destination']);
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}
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else {
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// Use $_REQUEST here to retrieve the original path.
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$path = isset($_REQUEST['q']) ? $_REQUEST['q'] : '';
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$query = drupal_query_string_encode($_GET, array('q'));
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if ($query != '') {
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$path .= '?'. $query;
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}
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return 'destination='. urlencode($path);
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}
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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, $fragment = NULL) {
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if (isset($_REQUEST['destination'])) {
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extract(parse_url($_REQUEST['destination']));
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}
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else if (isset($_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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// 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 site off-line message
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*/
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function drupal_site_offline() {
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drupal_set_header('HTTP/1.0 503 Service unavailable');
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drupal_set_title(t('Site off-line'));
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print theme('maintenance_page', filter_xss_admin(variable_get('site_offline_message',
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t('%site is currently under maintenance. We should be back shortly. Thank you for your patience.', array('%site' => variable_get('site_name', t('This Drupal site')))))));
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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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drupal_set_header('HTTP/1.0 404 Not Found');
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watchdog('page not found', t('%page not found.', array('%page' => theme('placeholder', $_GET['q']))), WATCHDOG_WARNING);
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// Keep old path for reference
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if (!isset($_REQUEST['destination'])) {
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$_REQUEST['destination'] = $_GET['q'];
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}
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$path = drupal_get_normal_path(variable_get('site_404', ''));
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if ($path && $path != $_GET['q']) {
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menu_set_active_item($path);
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$return = menu_execute_active_handler();
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}
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else {
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// Redirect to a non-existent menu item to make possible tabs disappear.
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menu_set_active_item('');
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}
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if (empty($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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drupal_set_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'), $_GET['q']));
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// Keep old path for reference
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if (!isset($_REQUEST['destination'])) {
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$_REQUEST['destination'] = $_GET['q'];
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}
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$path = drupal_get_normal_path(variable_get('site_403', ''));
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if ($path && $path != $_GET['q']) {
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menu_set_active_item($path);
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$return = menu_execute_active_handler();
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}
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else {
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// Redirect to a non-existent menu item to make possible tabs disappear.
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menu_set_active_item('');
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}
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if (empty($return)) {
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drupal_set_title(t('Access denied'));
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$return = t('You are not authorized to access this page.');
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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 ($uri['scheme']) {
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case 'http':
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$port = isset($uri['port']) ? $uri['port'] : 80;
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$host = $uri['host'] . ($port != 80 ? ':'. $port : '');
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$fp = @fsockopen($uri['host'], $port, $errno, $errstr, 15);
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break;
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case 'https':
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// Note: Only works for PHP 4.3 compiled with OpenSSL.
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$port = isset($uri['port']) ? $uri['port'] : 443;
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$host = $uri['host'] . ($port != 443 ? ':'. $port : '');
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$fp = @fsockopen('ssl://'. $uri['host'], $port, $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 = isset($uri['path']) ? $uri['path'] : '/';
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if (isset($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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// RFC 2616: "non-standard ports MUST, default ports MAY be included".
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// We don't add the port to prevent from breaking rewrite rules checking
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// the host that do not take into account the port number.
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'Host' => "Host: $host",
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'User-Agent' => 'User-Agent: Drupal (+http://drupal.org/)',
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'Content-Length' => 'Content-Length: '. strlen($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) && $chunk = fread($fp, 1024)) {
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$response .= $chunk;
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}
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fclose($fp);
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// Parse response.
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list($split, $result->data) = explode("\r\n\r\n", $response, 2);
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$split = preg_split("/\r\n|\n|\r/", $split);
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list($protocol, $code, $text) = explode(' ', trim(array_shift($split)), 3);
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$result->headers = array();
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// Parse headers.
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while ($line = trim(array_shift($split))) {
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list($header, $value) = explode(':', $line, 2);
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if (isset($result->headers[$header]) && $header == 'Set-Cookie') {
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// RFC 2109: the Set-Cookie response header comprises the token Set-
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// Cookie:, followed by a comma-separated list of one or more cookies.
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$result->headers[$header] .= ','. trim($value);
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}
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else {
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$result->headers[$header] = trim($value);
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}
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}
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$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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}
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switch ($code) {
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case 200: // OK
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case 304: // Not modified
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break;
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case 301: // Moved permanently
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case 302: // Moved temporarily
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case 307: // Moved temporarily
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$location = $result->headers['Location'];
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if ($retry) {
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$result = drupal_http_request($result->headers['Location'], $headers, $method, $data, --$retry);
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$result->redirect_code = $result->code;
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}
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$result->redirect_url = $location;
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break;
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default:
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$result->error = $text;
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}
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$result->code = $code;
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return $result;
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}
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/**
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* @} End of "HTTP handling".
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*/
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/**
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* Log errors as defined by administrator
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* Error levels:
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* 0 = Log errors to database.
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* 1 = Log errors to database and to screen.
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*/
|
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function error_handler($errno, $message, $filename, $line) {
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if ($errno & (E_ALL ^ E_NOTICE)) {
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$types = array(1 => 'error', 2 => 'warning', 4 => 'parse error', 8 => 'notice', 16 => 'core error', 32 => 'core warning', 64 => 'compile error', 128 => 'compile warning', 256 => 'user error', 512 => 'user warning', 1024 => 'user notice', 2048 => 'strict warning');
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$entry = $types[$errno] .': '. $message .' in '. $filename .' on line '. $line .'.';
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// Note: force display of error messages in update.php
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if (variable_get('error_level', 1) == 1 || strstr($_SERVER['PHP_SELF'], 'update.php')) {
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drupal_set_message($entry, 'error');
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}
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watchdog('php', t('%message in %file on line %line.', array('%error' => $types[$errno], '%message' => $message, '%file' => $filename, '%line' => $line)), WATCHDOG_ERROR);
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}
|
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}
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|
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function _fix_gpc_magic(&$item) {
|
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if (is_array($item)) {
|
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array_walk($item, '_fix_gpc_magic');
|
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}
|
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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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @name Messages
|
|
* @{
|
|
* Frequently used messages.
|
|
*/
|
|
|
|
/**
|
|
* 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 && isset($languages[$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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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 $mail
|
|
* A string containing an e-mail address.
|
|
* @return
|
|
* TRUE if the address is in a valid format.
|
|
*/
|
|
function valid_email_address($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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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($filename);
|
|
}
|
|
|
|
/**
|
|
* Prepare a URL for use in an HTML attribute. Strips harmful protocols.
|
|
*
|
|
*/
|
|
function check_url($uri) {
|
|
return filter_xss_bad_protocol($uri, FALSE);
|
|
}
|
|
|
|
/**
|
|
* @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";
|
|
|
|
// The RSS 2.0 "spec" doesn't indicate HTML can be used in the description.
|
|
// We strip all HTML tags, but need to prevent double encoding from properly
|
|
// escaped source data (such as & becoming &amp;).
|
|
$output .= ' <description>'. check_plain(decode_entities(strip_tags($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 .= ' <'. $value['key'];
|
|
if (isset($value['attributes']) && 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
|
|
$index = (function_exists('locale_get_plural')) ? locale_get_plural($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 = '', $timezone = NULL) {
|
|
if (!isset($timezone)) {
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* @} End of "defgroup format".
|
|
*/
|
|
|
|
/**
|
|
* Generate a URL from a Drupal menu path. Will also pass-through existing URLs.
|
|
*
|
|
* @param $path
|
|
* The Drupal path being linked to, such as "admin/node", or an existing URL
|
|
* like "http://drupal.org/".
|
|
* @param $query
|
|
* A query string to append to the link or URL.
|
|
* @param $fragment
|
|
* A fragment identifier (named anchor) to append to the link. If an existing
|
|
* URL with a fragment identifier is used, it will be replaced. Note, do not
|
|
* include the '#'.
|
|
* @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, $absolute = FALSE) {
|
|
if (isset($fragment)) {
|
|
$fragment = '#'. $fragment;
|
|
}
|
|
|
|
// Return an external link if $path contains an allowed absolute URL.
|
|
// Only call the slow filter_xss_bad_protocol if $path contains a ':'.
|
|
if (strpos($path, ':') !== FALSE && filter_xss_bad_protocol($path, FALSE) == check_plain($path)) {
|
|
// Split off the fragment
|
|
if (strpos($path, '#')) {
|
|
list($path, $old_fragment) = explode('#', $path, 2);
|
|
if (isset($old_fragment) && !isset($fragment)) {
|
|
$fragment = '#'. $old_fragment;
|
|
}
|
|
}
|
|
// Append the query
|
|
if (isset($query)) {
|
|
$path .= (strpos($path, '?') ? '&' : '?') . $query;
|
|
}
|
|
// Reassemble
|
|
return $path . $fragment;
|
|
}
|
|
|
|
global $base_url;
|
|
static $script;
|
|
static $clean_url;
|
|
|
|
if (empty($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' : '';
|
|
}
|
|
|
|
// Cache the clean_url variable to improve performance.
|
|
if (!isset($clean_url)) {
|
|
$clean_url = (bool)variable_get('clean_url', '0');
|
|
}
|
|
|
|
$base = ($absolute ? $base_url . '/' : base_path());
|
|
|
|
// The special path '<front>' links to the default front page.
|
|
if (!empty($path) && $path != '<front>') {
|
|
$path = drupal_get_path_alias($path);
|
|
$path = drupal_urlencode($path);
|
|
if (!$clean_url) {
|
|
if (isset($query)) {
|
|
return $base . $script .'?q='. $path .'&'. $query . $fragment;
|
|
}
|
|
else {
|
|
return $base . $script .'?q='. $path . $fragment;
|
|
}
|
|
}
|
|
else {
|
|
if (isset($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)) {
|
|
$t = '';
|
|
foreach ($attributes as $key => $value) {
|
|
$t .= " $key=".'"'. check_plain($value) .'"';
|
|
}
|
|
return $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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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));
|
|
}
|
|
|
|
/**
|
|
* Returns the base URL path of the Drupal installation.
|
|
* At the very least, this will always default to /.
|
|
*/
|
|
function base_path() {
|
|
return $GLOBALS['base_path'];
|
|
}
|
|
|
|
/**
|
|
* Provide a substitute clone() function for PHP4.
|
|
*/
|
|
function drupal_clone($object) {
|
|
return version_compare(phpversion(), '5.0') < 0 ? $object : clone($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, $nocache = FALSE) {
|
|
static $sent = array();
|
|
|
|
$postfix = $nocache ? '?'. time() : '';
|
|
if (!isset($sent['misc/drupal.js'])) {
|
|
drupal_set_html_head('<script type="text/javascript" src="'. base_path() .'misc/drupal.js'. $postfix .'"></script>');
|
|
$sent['misc/drupal.js'] = true;
|
|
}
|
|
if (!isset($sent[$file])) {
|
|
drupal_set_html_head('<script type="text/javascript" src="'. check_url(base_path() . $file) . $postfix .'"></script>');
|
|
$sent[$file] = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generates a Javascript call, while importing the arguments as is.
|
|
* PHP arrays are turned into JS objects to preserve keys. This means the array
|
|
* keys must conform to JS's member naming rules.
|
|
*
|
|
* @param $function
|
|
* The name of the function to call.
|
|
* @param $arguments
|
|
* An array of arguments.
|
|
*/
|
|
function drupal_call_js($function) {
|
|
$arguments = func_get_args();
|
|
array_shift($arguments);
|
|
$args = array();
|
|
foreach ($arguments as $arg) {
|
|
$args[] = drupal_to_js($arg);
|
|
}
|
|
$output = '<script type="text/javascript">'. $function .'('. implode(', ', $args) .');</script>';
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Converts a PHP variable into its Javascript equivalent.
|
|
*
|
|
* We use HTML-safe strings, i.e. with <, > and & escaped.
|
|
*/
|
|
function drupal_to_js($var) {
|
|
switch (gettype($var)) {
|
|
case 'boolean':
|
|
return $var ? 'true' : 'false'; // Lowercase necessary!
|
|
case 'integer':
|
|
case 'double':
|
|
return $var;
|
|
case 'resource':
|
|
case 'string':
|
|
return '"'. str_replace(array("\r", "\n", "<", ">", "&"),
|
|
array('\r', '\n', '\x3c', '\x3e', '\x26'),
|
|
addslashes($var)) .'"';
|
|
case 'array':
|
|
if (array_keys($var) === range(0, sizeof($var) - 1)) {
|
|
$output = array();
|
|
foreach($var as $v) {
|
|
$output[] = drupal_to_js($v);
|
|
}
|
|
return '[ '. implode(', ', $output) .' ]';
|
|
}
|
|
// Fall through
|
|
case 'object':
|
|
$output = array();
|
|
foreach ($var as $k => $v) {
|
|
$output[] = drupal_to_js(strval($k)) .': '. drupal_to_js($v);
|
|
}
|
|
return '{ '. implode(', ', $output) .' }';
|
|
default:
|
|
return 'null';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Wrapper around urlencode() which avoids Apache quirks.
|
|
*
|
|
* Should be used when placing arbitrary data in an URL. Note that Drupal paths
|
|
* are urlencoded() when passed through url() and do not require urlencoding()
|
|
* of individual components.
|
|
*
|
|
* @param $text
|
|
* String to encode
|
|
*/
|
|
function drupal_urlencode($text) {
|
|
return str_replace('%2F', '/', urlencode($text));
|
|
}
|
|
|
|
/**
|
|
* Performs one or more XML-RPC request(s).
|
|
*
|
|
* @param $url
|
|
* An absolute URL of the XML-RPC endpoint.
|
|
* Example:
|
|
* http://www.domain.com/xmlrpc.php
|
|
* @param ...
|
|
* For one request:
|
|
* The method name followed by a variable number of arguments to the method.
|
|
* For multiple requests (system.multicall):
|
|
* An array of call arrays. Each call array follows the pattern of the single
|
|
* request: method name followed by the arguments to the method.
|
|
* @return
|
|
* For one request:
|
|
* Either the return value of the method on success, or FALSE.
|
|
* If FALSE is returned, see xmlrpc_errno() and xmlrpc_error_msg().
|
|
* For multiple requests:
|
|
* An array of results. Each result will either be the result
|
|
* returned by the method called, or an xmlrpc_error object if the call
|
|
* failed. See xmlrpc_error().
|
|
*/
|
|
function xmlrpc($url) {
|
|
require_once './includes/xmlrpc.inc';
|
|
$args = func_get_args();
|
|
return call_user_func_array('_xmlrpc', $args);
|
|
}
|
|
|
|
function _drupal_bootstrap_full() {
|
|
static $called;
|
|
global $locale;
|
|
|
|
if ($called) {
|
|
return;
|
|
}
|
|
$called = 1;
|
|
require_once './includes/theme.inc';
|
|
require_once './includes/pager.inc';
|
|
require_once './includes/menu.inc';
|
|
require_once './includes/tablesort.inc';
|
|
require_once './includes/file.inc';
|
|
require_once './includes/unicode.inc';
|
|
require_once './includes/image.inc';
|
|
require_once './includes/form.inc';
|
|
// Set the Drupal custom error handler.
|
|
set_error_handler('error_handler');
|
|
// Emit the correct charset HTTP header.
|
|
drupal_set_header('Content-Type: text/html; charset=utf-8');
|
|
// Detect string handling method
|
|
unicode_check();
|
|
// Initialize all enabled modules.
|
|
module_init();
|
|
// Undo magic quotes
|
|
fix_gpc_magic();
|
|
// Initialize the localization system.
|
|
$locale = locale_initialize();
|
|
}
|
|
|
|
/**
|
|
* Store the current page in the cache.
|
|
*
|
|
* We try to store a gzipped version of the cache. This requires the
|
|
* PHP zlib extension (http://php.net/manual/en/ref.zlib.php).
|
|
* Presence of the extension is checked by testing for the function
|
|
* gzencode. There are two compression algorithms: gzip and deflate.
|
|
* The majority of all modern browsers support gzip or both of them.
|
|
* We thus only deal with the gzip variant and unzip the cache in case
|
|
* the browser does not accept gzip encoding.
|
|
*
|
|
* @see drupal_page_header
|
|
*/
|
|
function page_set_cache() {
|
|
global $user, $base_root;
|
|
|
|
if (!$user->uid && $_SERVER['REQUEST_METHOD'] == 'GET') {
|
|
// This will fail in some cases, see page_get_cache() for the explanation.
|
|
if ($data = ob_get_contents()) {
|
|
$cache = TRUE;
|
|
if (function_exists('gzencode')) {
|
|
// We do not store the data in case the zlib mode is deflate.
|
|
// This should be rarely happening.
|
|
if (zlib_get_coding_type() == 'deflate') {
|
|
$cache = FALSE;
|
|
}
|
|
else if (zlib_get_coding_type() == FALSE) {
|
|
$data = gzencode($data, 9, FORCE_GZIP);
|
|
}
|
|
// The remaining case is 'gzip' which means the data is
|
|
// already compressed and nothing left to do but to store it.
|
|
}
|
|
ob_end_flush();
|
|
if ($cache && $data) {
|
|
cache_set($base_root . request_uri(), $data, CACHE_TEMPORARY, drupal_get_headers());
|
|
}
|
|
}
|
|
}
|
|
}
|