1804 lines
56 KiB
PHP
1804 lines
56 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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* 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 $output . drupal_set_html_head();
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}
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/**
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* Regenerate the path map from the information in the database.
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*/
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function drupal_rebuild_path_map() {
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drupal_get_path_map('rebuild');
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}
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/**
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* Given a path alias, return the internal path it represents.
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*/
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function drupal_get_normal_path($path) {
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if (($map = drupal_get_path_map()) && isset($map[$path])) {
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return $map[$path];
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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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* 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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* 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 $fragment
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* The destination fragment identifier (named anchor).
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*/
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function drupal_goto($path = '', $query = NULL, $fragment = NULL) {
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// Translate & to simply & in the absolute URL.
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$url = str_replace('&', '&', 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: '. $url);
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// The "Location" header sends a REDIRECT status code to the http
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// daemon. In some cases this can go wrong, so we make sure none
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// of the code below the drupal_goto() call gets executed when we redirect.
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exit();
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}
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/**
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* Generates a 404 error if the request can not be handled.
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*/
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function drupal_not_found() {
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header('HTTP/1.0 404 Not Found');
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watchdog('page not found', t('%page not found.', array('%page' => '<em>'. db_escape_string($_GET['q']) .'</em>')));
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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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$status = menu_execute_active_handler();
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}
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if ($status != MENU_FOUND) {
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print theme('page', '', t('Page not found'));
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}
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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' => '<em>'. db_escape_string($_GET['q']) .'</em>')));
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$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($path);
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$status = menu_execute_active_handler();
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}
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if ($status != MENU_FOUND) {
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print theme('page', message_access(), t('Access denied'));
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}
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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, $retry = 3) {
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// Parse the URL, and make sure we can handle the schema.
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$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($code / 100) * 100;
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}
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switch ($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 $result;
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}
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/**
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* @} End of "HTTP handling".
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*/
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/**
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* Log errors as defined by administrator
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* Error levels:
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* 1 = Log errors to database.
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* 2 = Log errors to database and to screen.
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*/
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function error_handler($errno, $message, $filename, $line, $variables) {
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if ($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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watchdog('error', t('%message in %file on line %line.', array('%error' => $types[$errno], '%message' => $message, '%file' => $filename, '%line' => $line)));
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if (variable_get('error_level', 1) == 1) {
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print '<pre>'. $entry .'</pre>';
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}
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}
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}
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function _fix_gpc_magic(&$item, $key) {
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if (is_array($item)) {
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array_walk($item, '_fix_gpc_magic');
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}
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else {
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$item = stripslashes($item);
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}
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}
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/**
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* Correct double-escaping problems caused by "magic quotes" in some PHP
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* installations.
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*/
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function fix_gpc_magic() {
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static $fixed = false;
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if (!$fixed && ini_get('magic_quotes_gpc')) {
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array_walk($_GET, '_fix_gpc_magic');
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array_walk($_POST, '_fix_gpc_magic');
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array_walk($_COOKIE, '_fix_gpc_magic');
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array_walk($_REQUEST, '_fix_gpc_magic');
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$fixed = true;
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}
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}
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/**
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* @name Conversion
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* @{
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* Converts data structures to different types.
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*/
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/**
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* Convert an associative array to an anonymous object.
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*/
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function array2object($array) {
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if (is_array($array)) {
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$object = new stdClass();
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foreach ($array as $key => $value) {
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$object->$key = $value;
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}
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}
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else {
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$object = $array;
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}
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return $object;
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}
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/**
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* Convert an object to an associative array.
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*/
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function object2array($object) {
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if (is_object($object)) {
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foreach ($object as $key => $value) {
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$array[$key] = $value;
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}
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}
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else {
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$array = $object;
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}
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return $array;
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}
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/**
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* @} End of "Conversion".
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*/
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/**
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* @name Messages
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* @{
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* Frequently used messages.
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*/
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/**
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* Return a string with an "access denied" message.
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*
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* Always consider whether to use drupal_access_denied() instead to return a
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* proper (and customizable) 403 error.
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*/
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function message_access() {
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return t('You are not authorized to access this page.');
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}
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/**
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* Return a string with a "not applicable" message.
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*/
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function message_na() {
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return t('n/a');
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}
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/**
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* @} End of "Messages".
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*/
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/**
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* Initialize the localization system.
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*/
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function locale_initialize() {
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global $user;
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if (function_exists('i18n_get_lang')) {
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return i18n_get_lang();
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}
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if (function_exists('locale')) {
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$languages = locale_supported_languages();
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$languages = $languages['name'];
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}
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else {
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// Ensure the locale/language is correctly returned, even without locale.module.
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// Useful for e.g. XML/HTML 'lang' attributes.
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$languages = array('en' => 'English');
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}
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if ($user->uid && $languages[$user->language]) {
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return $user->language;
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}
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else {
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return key($languages);
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}
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}
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/**
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* Translate strings to the current locale.
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*
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* When using t(), try to put entire sentences and strings in one t() call.
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* This makes it easier for translators. HTML markup within translation strings
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* is acceptable, if necessary. The suggested syntax for a link embedded
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* within a translation string is:
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* @code
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* $msg = t('You must log in below or <a href="%url">create a new
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* account</a> before viewing the next page.', array('%url'
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* => url('user/register')));
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* @endcode
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* We suggest the same syntax for links to other sites. This makes it easy to
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* change link URLs if needed (which happens often) without requiring updates
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* to translations.
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*
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* @param $string
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* A string containing the English string to translate.
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* @param $args
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* An associative array of replacements to make after translation. Incidences
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* of any key in this array are replaced with the corresponding value.
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* @return
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* The translated string.
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*/
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function t($string, $args = 0) {
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global $locale;
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if (function_exists('locale') && $locale != 'en') {
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$string = locale($string);
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}
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if (!$args) {
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return $string;
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}
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else {
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return strtr($string, $args);
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}
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}
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/**
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* Encode special characters in a string for display as HTML.
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*
|
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* Note that we'd like to use htmlspecialchars($input, $quotes, 'utf-8')
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* as outlined in the PHP manual, but we can't because there's a bug in
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* PHP < 4.3 that makes it mess up multibyte charsets if we specify the
|
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* charset. This will be changed later once we make PHP 4.3 a requirement.
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*/
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function drupal_specialchars($input, $quotes = ENT_NOQUOTES) {
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return htmlspecialchars($input, $quotes);
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}
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|
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/**
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* @defgroup validation Input validation
|
|
* @{
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* Functions to validate user input.
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|
*/
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|
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/**
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|
* Verify the syntax of the given e-mail address.
|
|
*
|
|
* Empty e-mail addresses are allowed. See RFC 2822 for details.
|
|
*
|
|
* @param $mail
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* A string containing an email address.
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* @return
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* TRUE if the address is in a valid format.
|
|
*/
|
|
function valid_email_address($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, $absolute = FALSE) {
|
|
if ($absolute) {
|
|
return preg_match("/^(http|https|ftp):\/\/[a-z0-9\/:_\-_\.\?,~=#&%\+]+$/i", $url);
|
|
}
|
|
else {
|
|
return preg_match("/^[a-z0-9\/:_\-_\.,\+]+$/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 {
|
|
// Detect dangerous input data.
|
|
|
|
// 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('warning', t('Terminated request because of suspicious input data: %data.', array('%data' => '<em>'. drupal_specialchars($data) .'</em>')));
|
|
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 < $threshold ? TRUE : FALSE);
|
|
}
|
|
|
|
function check_form($text) {
|
|
return drupal_specialchars($text, ENT_QUOTES);
|
|
}
|
|
|
|
function check_file($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";
|
|
$output .= ' <title>'. drupal_specialchars(strip_tags($title)) ."</title>\n";
|
|
$output .= ' <link>'. drupal_specialchars(strip_tags($link)) ."</link>\n";
|
|
$output .= ' <description>'. drupal_specialchars(strip_tags($description)) ."</description>\n";
|
|
$output .= ' <language>'. drupal_specialchars(strip_tags($language)) ."</language>\n";
|
|
foreach ($args as $key => $value) {
|
|
$output .= ' <'. $key .'>'. drupal_specialchars(strip_tags($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";
|
|
$output .= ' <title>'. drupal_specialchars(strip_tags($title)) ."</title>\n";
|
|
$output .= ' <link>'. drupal_specialchars(strip_tags($link)) ."</link>\n";
|
|
$output .= ' <description>'. drupal_specialchars($description) ."</description>\n";
|
|
foreach ($args as $key => $value) {
|
|
$output .= ' <'. $key .'>'. drupal_specialchars(strip_tags($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;
|
|
}
|
|
|
|
$output = l($name, 'user/'. $object->uid, array('title' => t('View user profile.')));
|
|
}
|
|
else if ($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();
|
|
}
|
|
return '<form action="'. $action .'" method="'. $method .'"'. drupal_attributes($attributes) .">\n". $form ."\n</form>\n";
|
|
}
|
|
|
|
/**
|
|
* File an error against the form element with the specified name.
|
|
*/
|
|
function form_set_error($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 $description
|
|
* Explanatory text to display after the form item group.
|
|
* @return
|
|
* A themed HTML string representing the form item group.
|
|
*/
|
|
function form_group($legend, $group, $description = NULL) {
|
|
return '<fieldset>' . ($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-'. $name .'" value="'. $value .'"'. ($checked ? ' checked="checked"' : '') . drupal_attributes($attributes) .' />';
|
|
if (!is_null($title)) {
|
|
$element = '<label class="option">'. $element .' '. $title .'</label>';
|
|
}
|
|
// Note: because unchecked boxes are not included in the POST data, we include
|
|
// a form_hidden() which will be overwritten for a checked box.
|
|
return form_hidden($name, 0) . 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). ' /> '. $choice .'</label><br />';
|
|
}
|
|
// Note: because unchecked boxes are not included in the POST data, we
|
|
// include a form_hidden() which will be overwritten as soon as there is at
|
|
// least one checked box.
|
|
return form_hidden($name, 0) . 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-'. $name .'"'. $size .' value="'. check_form($value) .'"'. drupal_attributes($attributes) .' />', $description, 'edit-'. $name, $required, _form_get_error($name));
|
|
}
|
|
|
|
/**
|
|
* 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-'. $name .'"'. $size .' value="'. check_form($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 .'"' : '';
|
|
$output = '';
|
|
|
|
// e.g. optionally plug in a WYSIWYG editor
|
|
foreach (module_list() as $module_name) {
|
|
if (module_hook($module_name, 'textarea')) {
|
|
$output .= module_invoke($module_name, 'textarea', 'pre', $name);
|
|
}
|
|
}
|
|
|
|
$output .= theme('form_element', $title, '<textarea wrap="virtual"'. $cols .' rows="'. $rows .'" name="edit['. $name .']" id="edit-'. $name .'" class="'. _form_get_class('textarea', $required, _form_get_error($name)) .'"'. drupal_attributes($attributes) .'>'. check_form($value) .'</textarea>', $description, 'edit-'. $name, $required, _form_get_error($name));
|
|
|
|
// e.g. optionally plug in a WYSIWYG editor
|
|
foreach (module_list() as $module_name) {
|
|
if (module_hook($module_name, 'textarea')) {
|
|
$output .= module_invoke($module_name, 'textarea', 'post', $name);
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* 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 == $key ? ' selected="selected"' : '')) .'>'. check_form($choice) .'</option>';
|
|
}
|
|
$select .= '</optgroup>';
|
|
}
|
|
else {
|
|
$select .= '<option value="'. $key .'"'. (is_array($value) ? (in_array($key, $value) ? ' selected="selected"' : '') : ($value == $key ? ' selected="selected"' : '')) .'>'. check_form($choice) .'</option>';
|
|
}
|
|
}
|
|
return theme('form_element', $title, '<select name="edit['. $name .']'. ($multiple ? '[]' : '') .'"'. ($multiple ? ' multiple="multiple" ' : '') . ($extra ? ' '. $extra : '') .' id="edit-'. $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-'. $name .'" size="'. $size ."\" />\n", $description, 'edit-'. $name, $required, _form_get_error($error));
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
return '<input type="hidden" name="edit['. $name .']" value="'. check_form($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="'. $name .'" value="'. check_form($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);
|
|
}
|
|
|
|
/**
|
|
* @} 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 ($attributes) {
|
|
$t = array();
|
|
foreach ($attributes as $key => $value) {
|
|
$t[] = $key .'="'. $value .'"';
|
|
}
|
|
|
|
return ' '. implode($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".
|
|
* @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 $absolute
|
|
* Whether to force the output to be an absolute link (beginning with http:).
|
|
* Useful for links that will be displayed outside the site, such as in an RSS feed.
|
|
* @return
|
|
* an HTML string containing a link to the given path.
|
|
*/
|
|
function l($text, $path, $attributes = array(), $query = NULL, $fragment = NULL, $absolute = FALSE) {
|
|
if (drupal_get_normal_path($path) == $_GET['q']) {
|
|
if (isset($attributes['class'])) {
|
|
$attributes['class'] .= ' active';
|
|
}
|
|
else {
|
|
$attributes['class'] = 'active';
|
|
}
|
|
}
|
|
return '<a href="'. url($path, $query, $fragment, $absolute) .'"'. drupal_attributes($attributes) .'>'. $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 should 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) {
|
|
$encoding = 'utf-8';
|
|
if (ereg('^<\?xml[^>]+encoding="([^"]+)"', $data, $match)) {
|
|
$encoding = $match[1];
|
|
}
|
|
|
|
// Unsupported encodings are converted here into UTF-8.
|
|
// Requires the iconv, GNU recode or mbstring PHP extension.
|
|
$php_supported = array('utf-8', 'iso-8859-1', 'us-ascii');
|
|
if (!in_array(strtolower($encoding), $php_supported)) {
|
|
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('warning', t("Unsupported XML encoding '%s'. Please install iconv, GNU recode or mbstring for PHP.", $encoding));
|
|
return 0;
|
|
}
|
|
|
|
if ($out !== false) {
|
|
$data = $out;
|
|
$encoding = 'utf-8';
|
|
}
|
|
else {
|
|
watchdog('warning', t("Could not convert XML encoding '%s' to UTF-8.", $encoding));
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
$xml_parser = xml_parser_create($encoding);
|
|
xml_parser_set_option($xml_parser, XML_OPTION_TARGET_ENCODING, 'utf-8');
|
|
return $xml_parser;
|
|
}
|
|
|
|
/**
|
|
* 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 $wordsafe
|
|
* Flag to truncate at nearest word boundary. Defaults to FALSE.
|
|
* @return
|
|
* The truncated string.
|
|
*/
|
|
function truncate_utf8($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, $len);
|
|
}
|
|
|
|
/**
|
|
* Encodes MIME/HTTP header values that contain non US-ASCII characters.
|
|
*
|
|
* For example, mime_header_encode('tést.txt') returns "=?UTF-8?B?dMOpc3QudHh0?=".
|
|
*
|
|
* See http://www.rfc-editor.org/rfc/rfc2047.txt for more information.
|
|
*
|
|
* Notes:
|
|
* - Only encode strings that contain non-ASCII characters.
|
|
* - The chunks come in groupings of 4 bytes when using base64 encoding.
|
|
* - trim() is used to ensure that no extra spacing is added by chunk_split() or
|
|
* preg_replace().
|
|
* - Using \n as the chunk separator may cause problems on some systems and may
|
|
* have to be changed to \r\n or \r.
|
|
*/
|
|
function mime_header_encode($string, $charset = 'UTF-8') {
|
|
if (!preg_match('/^[\x20-\x7E]*$/', $string)) {
|
|
$chunk_size = 75 - 7 - strlen($charset);
|
|
$chunk_size -= $chunk_size % 4;
|
|
$string = trim(chunk_split(base64_encode($string), $chunk_size, "\n"));
|
|
$string = trim(preg_replace('/^(.*)$/m', " =?$charset?B?\\1?=", $string));
|
|
}
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* Decode all HTML entities (including numerical ones) to regular UTF-8 bytes.
|
|
*/
|
|
function decode_entities($text) {
|
|
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, $special));
|
|
// PHP gives us Windows-1252/ISO-8859-1 data, we need UTF-8.
|
|
$table = array_map('utf8_encode', $table);
|
|
}
|
|
$text = strtr($text, $table);
|
|
|
|
// Any remaining entities are numerical. Use a regexp to replace them.
|
|
return preg_replace('/&#(x?)([A-Za-z0-9]+);/e', '_decode_entities("$1", "$2")', $text);
|
|
}
|
|
|
|
/**
|
|
* Helper function for decode_entities
|
|
*/
|
|
function _decode_entities($hex, $codepoint) {
|
|
if ($hex != '') {
|
|
$codepoint = base_convert($codepoint, 16, 10);
|
|
}
|
|
if ($codepoint < 0x80) {
|
|
return chr($codepoint);
|
|
}
|
|
else if ($codepoint < 0x800) {
|
|
return chr(0xC0 | ($codepoint >> 6))
|
|
. chr(0x80 | ($codepoint & 0x3F));
|
|
}
|
|
else if ($codepoint < 0x10000) {
|
|
return chr(0xE0 | ( $codepoint >> 12))
|
|
. chr(0x80 | (($codepoint >> 6) & 0x3F))
|
|
. chr(0x80 | ( $codepoint & 0x3F));
|
|
}
|
|
else if ($codepoint < 0x200000) {
|
|
return chr(0xF0 | ( $codepoint >> 18))
|
|
. chr(0x80 | (($codepoint >> 12) & 0x3F))
|
|
. chr(0x80 | (($codepoint >> 6) & 0x3F))
|
|
. chr(0x80 | ( $codepoint & 0x3F));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Count the amount of characters in a UTF-8 string. This is less than or
|
|
* equal to the byte count.
|
|
*/
|
|
function string_length(&$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));
|
|
}
|
|
|
|
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';
|
|
|
|
// 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');
|
|
|
|
// 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 {
|
|
$_GET['q'] = drupal_get_normal_path(variable_get('site_frontpage', 'node'));
|
|
}
|
|
|
|
// Initialize all enabled modules.
|
|
module_init();
|
|
|
|
if ($_REQUEST && !user_access('bypass input data check')) {
|
|
if (!valid_input_data($_REQUEST)) {
|
|
die('Terminated request because of suspicious input data.');
|
|
}
|
|
}
|
|
|
|
// Initialize the localization system.
|
|
$locale = locale_initialize();
|
|
|
|
// Initialize the enabled theme.
|
|
$theme = init_theme();
|
|
|
|
?>
|