defr/drupal/core: includes/common.inc annotate

annotate includes/common.inc @ 1:c1f4ac30525a 6.0

Drupal 6.0

author	Franck Deroche <webmaster@defr.org>
date	Tue, 23 Dec 2008 14:28:28 +0100
parents
children	165d43f946a8

rev	line source
webmaster@1	1 <?php
webmaster@1	2 // $Id: common.inc,v 1.756.2.4 2008/02/13 14:25:42 goba Exp $
webmaster@1	3
webmaster@1	4 /**
webmaster@1	5 * @file
webmaster@1	6 * Common functions that many Drupal modules will need to reference.
webmaster@1	7 *
webmaster@1	8 * The functions that are critical and need to be available even when serving
webmaster@1	9 * a cached page are instead located in bootstrap.inc.
webmaster@1	10 */
webmaster@1	11
webmaster@1	12 /**
webmaster@1	13 * Return status for saving which involved creating a new item.
webmaster@1	14 */
webmaster@1	15 define('SAVED_NEW', 1);
webmaster@1	16
webmaster@1	17 /**
webmaster@1	18 * Return status for saving which involved an update to an existing item.
webmaster@1	19 */
webmaster@1	20 define('SAVED_UPDATED', 2);
webmaster@1	21
webmaster@1	22 /**
webmaster@1	23 * Return status for saving which deleted an existing item.
webmaster@1	24 */
webmaster@1	25 define('SAVED_DELETED', 3);
webmaster@1	26
webmaster@1	27 /**
webmaster@1	28 * Set content for a specified region.
webmaster@1	29 *
webmaster@1	30 * @param $region
webmaster@1	31 * Page region the content is assigned to.
webmaster@1	32 * @param $data
webmaster@1	33 * Content to be set.
webmaster@1	34 */
webmaster@1	35 function drupal_set_content($region = NULL, $data = NULL) {
webmaster@1	36 static $content = array();
webmaster@1	37
webmaster@1	38 if (!is_null($region) && !is_null($data)) {
webmaster@1	39 $content[$region][] = $data;
webmaster@1	40 }
webmaster@1	41 return $content;
webmaster@1	42 }
webmaster@1	43
webmaster@1	44 /**
webmaster@1	45 * Get assigned content.
webmaster@1	46 *
webmaster@1	47 * @param $region
webmaster@1	48 * A specified region to fetch content for. If NULL, all regions will be
webmaster@1	49 * returned.
webmaster@1	50 * @param $delimiter
webmaster@1	51 * Content to be inserted between exploded array elements.
webmaster@1	52 */
webmaster@1	53 function drupal_get_content($region = NULL, $delimiter = ' ') {
webmaster@1	54 $content = drupal_set_content();
webmaster@1	55 if (isset($region)) {
webmaster@1	56 if (isset($content[$region]) && is_array($content[$region])) {
webmaster@1	57 return implode($delimiter, $content[$region]);
webmaster@1	58 }
webmaster@1	59 }
webmaster@1	60 else {
webmaster@1	61 foreach (array_keys($content) as $region) {
webmaster@1	62 if (is_array($content[$region])) {
webmaster@1	63 $content[$region] = implode($delimiter, $content[$region]);
webmaster@1	64 }
webmaster@1	65 }
webmaster@1	66 return $content;
webmaster@1	67 }
webmaster@1	68 }
webmaster@1	69
webmaster@1	70 /**
webmaster@1	71 * Set the breadcrumb trail for the current page.
webmaster@1	72 *
webmaster@1	73 * @param $breadcrumb
webmaster@1	74 * Array of links, starting with "home" and proceeding up to but not including
webmaster@1	75 * the current page.
webmaster@1	76 */
webmaster@1	77 function drupal_set_breadcrumb($breadcrumb = NULL) {
webmaster@1	78 static $stored_breadcrumb;
webmaster@1	79
webmaster@1	80 if (!is_null($breadcrumb)) {
webmaster@1	81 $stored_breadcrumb = $breadcrumb;
webmaster@1	82 }
webmaster@1	83 return $stored_breadcrumb;
webmaster@1	84 }
webmaster@1	85
webmaster@1	86 /**
webmaster@1	87 * Get the breadcrumb trail for the current page.
webmaster@1	88 */
webmaster@1	89 function drupal_get_breadcrumb() {
webmaster@1	90 $breadcrumb = drupal_set_breadcrumb();
webmaster@1	91
webmaster@1	92 if (is_null($breadcrumb)) {
webmaster@1	93 $breadcrumb = menu_get_active_breadcrumb();
webmaster@1	94 }
webmaster@1	95
webmaster@1	96 return $breadcrumb;
webmaster@1	97 }
webmaster@1	98
webmaster@1	99 /**
webmaster@1	100 * Add output to the head tag of the HTML page.
webmaster@1	101 *
webmaster@1	102 * This function can be called as long the headers aren't sent.
webmaster@1	103 */
webmaster@1	104 function drupal_set_html_head($data = NULL) {
webmaster@1	105 static $stored_head = '';
webmaster@1	106
webmaster@1	107 if (!is_null($data)) {
webmaster@1	108 $stored_head .= $data ."\n";
webmaster@1	109 }
webmaster@1	110 return $stored_head;
webmaster@1	111 }
webmaster@1	112
webmaster@1	113 /**
webmaster@1	114 * Retrieve output to be displayed in the head tag of the HTML page.
webmaster@1	115 */
webmaster@1	116 function drupal_get_html_head() {
webmaster@1	117 $output = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n";
webmaster@1	118 return $output . drupal_set_html_head();
webmaster@1	119 }
webmaster@1	120
webmaster@1	121 /**
webmaster@1	122 * Reset the static variable which holds the aliases mapped for this request.
webmaster@1	123 */
webmaster@1	124 function drupal_clear_path_cache() {
webmaster@1	125 drupal_lookup_path('wipe');
webmaster@1	126 }
webmaster@1	127
webmaster@1	128 /**
webmaster@1	129 * Set an HTTP response header for the current page.
webmaster@1	130 *
webmaster@1	131 * Note: When sending a Content-Type header, always include a 'charset' type,
webmaster@1	132 * too. This is necessary to avoid security bugs (e.g. UTF-7 XSS).
webmaster@1	133 */
webmaster@1	134 function drupal_set_header($header = NULL) {
webmaster@1	135 // We use an array to guarantee there are no leading or trailing delimiters.
webmaster@1	136 // Otherwise, header('') could get called when serving the page later, which
webmaster@1	137 // ends HTTP headers prematurely on some PHP versions.
webmaster@1	138 static $stored_headers = array();
webmaster@1	139
webmaster@1	140 if (strlen($header)) {
webmaster@1	141 header($header);
webmaster@1	142 $stored_headers[] = $header;
webmaster@1	143 }
webmaster@1	144 return implode("\n", $stored_headers);
webmaster@1	145 }
webmaster@1	146
webmaster@1	147 /**
webmaster@1	148 * Get the HTTP response headers for the current page.
webmaster@1	149 */
webmaster@1	150 function drupal_get_headers() {
webmaster@1	151 return drupal_set_header();
webmaster@1	152 }
webmaster@1	153
webmaster@1	154 /**
webmaster@1	155 * Add a feed URL for the current page.
webmaster@1	156 *
webmaster@1	157 * @param $url
webmaster@1	158 * A url for the feed.
webmaster@1	159 * @param $title
webmaster@1	160 * The title of the feed.
webmaster@1	161 */
webmaster@1	162 function drupal_add_feed($url = NULL, $title = '') {
webmaster@1	163 static $stored_feed_links = array();
webmaster@1	164
webmaster@1	165 if (!is_null($url) && !isset($stored_feed_links[$url])) {
webmaster@1	166 $stored_feed_links[$url] = theme('feed_icon', $url, $title);
webmaster@1	167
webmaster@1	168 drupal_add_link(array('rel' => 'alternate',
webmaster@1	169 'type' => 'application/rss+xml',
webmaster@1	170 'title' => $title,
webmaster@1	171 'href' => $url));
webmaster@1	172 }
webmaster@1	173 return $stored_feed_links;
webmaster@1	174 }
webmaster@1	175
webmaster@1	176 /**
webmaster@1	177 * Get the feed URLs for the current page.
webmaster@1	178 *
webmaster@1	179 * @param $delimiter
webmaster@1	180 * A delimiter to split feeds by.
webmaster@1	181 */
webmaster@1	182 function drupal_get_feeds($delimiter = "\n") {
webmaster@1	183 $feeds = drupal_add_feed();
webmaster@1	184 return implode($feeds, $delimiter);
webmaster@1	185 }
webmaster@1	186
webmaster@1	187 /**
webmaster@1	188 * @name HTTP handling
webmaster@1	189 * @{
webmaster@1	190 * Functions to properly handle HTTP responses.
webmaster@1	191 */
webmaster@1	192
webmaster@1	193 /**
webmaster@1	194 * Parse an array into a valid urlencoded query string.
webmaster@1	195 *
webmaster@1	196 * @param $query
webmaster@1	197 * The array to be processed e.g. $_GET.
webmaster@1	198 * @param $exclude
webmaster@1	199 * The array filled with keys to be excluded. Use parent[child] to exclude
webmaster@1	200 * nested items.
webmaster@1	201 * @param $parent
webmaster@1	202 * Should not be passed, only used in recursive calls.
webmaster@1	203 * @return
webmaster@1	204 * An urlencoded string which can be appended to/as the URL query string.
webmaster@1	205 */
webmaster@1	206 function drupal_query_string_encode($query, $exclude = array(), $parent = '') {
webmaster@1	207 $params = array();
webmaster@1	208
webmaster@1	209 foreach ($query as $key => $value) {
webmaster@1	210 $key = drupal_urlencode($key);
webmaster@1	211 if ($parent) {
webmaster@1	212 $key = $parent .'['. $key .']';
webmaster@1	213 }
webmaster@1	214
webmaster@1	215 if (in_array($key, $exclude)) {
webmaster@1	216 continue;
webmaster@1	217 }
webmaster@1	218
webmaster@1	219 if (is_array($value)) {
webmaster@1	220 $params[] = drupal_query_string_encode($value, $exclude, $key);
webmaster@1	221 }
webmaster@1	222 else {
webmaster@1	223 $params[] = $key .'='. drupal_urlencode($value);
webmaster@1	224 }
webmaster@1	225 }
webmaster@1	226
webmaster@1	227 return implode('&', $params);
webmaster@1	228 }
webmaster@1	229
webmaster@1	230 /**
webmaster@1	231 * Prepare a destination query string for use in combination with drupal_goto().
webmaster@1	232 *
webmaster@1	233 * Used to direct the user back to the referring page after completing a form.
webmaster@1	234 * By default the current URL is returned. If a destination exists in the
webmaster@1	235 * previous request, that destination is returned. As such, a destination can
webmaster@1	236 * persist across multiple pages.
webmaster@1	237 *
webmaster@1	238 * @see drupal_goto()
webmaster@1	239 */
webmaster@1	240 function drupal_get_destination() {
webmaster@1	241 if (isset($_REQUEST['destination'])) {
webmaster@1	242 return 'destination='. urlencode($_REQUEST['destination']);
webmaster@1	243 }
webmaster@1	244 else {
webmaster@1	245 // Use $_GET here to retrieve the original path in source form.
webmaster@1	246 $path = isset($_GET['q']) ? $_GET['q'] : '';
webmaster@1	247 $query = drupal_query_string_encode($_GET, array('q'));
webmaster@1	248 if ($query != '') {
webmaster@1	249 $path .= '?'. $query;
webmaster@1	250 }
webmaster@1	251 return 'destination='. urlencode($path);
webmaster@1	252 }
webmaster@1	253 }
webmaster@1	254
webmaster@1	255 /**
webmaster@1	256 * Send the user to a different Drupal page.
webmaster@1	257 *
webmaster@1	258 * This issues an on-site HTTP redirect. The function makes sure the redirected
webmaster@1	259 * URL is formatted correctly.
webmaster@1	260 *
webmaster@1	261 * Usually the redirected URL is constructed from this function's input
webmaster@1	262 * parameters. However you may override that behavior by setting a
webmaster@1	263 * <em>destination</em> in either the $_REQUEST-array (i.e. by using
webmaster@1	264 * the query string of an URI) or the $_REQUEST['edit']-array (i.e. by
webmaster@1	265 * using a hidden form field). This is used to direct the user back to
webmaster@1	266 * the proper page after completing a form. For example, after editing
webmaster@1	267 * a post on the 'admin/content/node'-page or after having logged on using the
webmaster@1	268 * 'user login'-block in a sidebar. The function drupal_get_destination()
webmaster@1	269 * can be used to help set the destination URL.
webmaster@1	270 *
webmaster@1	271 * Drupal will ensure that messages set by drupal_set_message() and other
webmaster@1	272 * session data are written to the database before the user is redirected.
webmaster@1	273 *
webmaster@1	274 * This function ends the request; use it rather than a print theme('page')
webmaster@1	275 * statement in your menu callback.
webmaster@1	276 *
webmaster@1	277 * @param $path
webmaster@1	278 * A Drupal path or a full URL.
webmaster@1	279 * @param $query
webmaster@1	280 * A query string component, if any.
webmaster@1	281 * @param $fragment
webmaster@1	282 * A destination fragment identifier (named anchor).
webmaster@1	283 * @param $http_response_code
webmaster@1	284 * Valid values for an actual "goto" as per RFC 2616 section 10.3 are:
webmaster@1	285 * - 301 Moved Permanently (the recommended value for most redirects)
webmaster@1	286 * - 302 Found (default in Drupal and PHP, sometimes used for spamming search
webmaster@1	287 * engines)
webmaster@1	288 * - 303 See Other
webmaster@1	289 * - 304 Not Modified
webmaster@1	290 * - 305 Use Proxy
webmaster@1	291 * - 307 Temporary Redirect (alternative to "503 Site Down for Maintenance")
webmaster@1	292 * Note: Other values are defined by RFC 2616, but are rarely used and poorly
webmaster@1	293 * supported.
webmaster@1	294 * @see drupal_get_destination()
webmaster@1	295 */
webmaster@1	296 function drupal_goto($path = '', $query = NULL, $fragment = NULL, $http_response_code = 302) {
webmaster@1	297
webmaster@1	298 if (isset($_REQUEST['destination'])) {
webmaster@1	299 extract(parse_url(urldecode($_REQUEST['destination'])));
webmaster@1	300 }
webmaster@1	301 else if (isset($_REQUEST['edit']['destination'])) {
webmaster@1	302 extract(parse_url(urldecode($_REQUEST['edit']['destination'])));
webmaster@1	303 }
webmaster@1	304
webmaster@1	305 $url = url($path, array('query' => $query, 'fragment' => $fragment, 'absolute' => TRUE));
webmaster@1	306 // Remove newlines from the URL to avoid header injection attacks.
webmaster@1	307 $url = str_replace(array("\n", "\r"), '', $url);
webmaster@1	308
webmaster@1	309 // Allow modules to react to the end of the page request before redirecting.
webmaster@1	310 // We do not want this while running update.php.
webmaster@1	311 if (!defined('MAINTENANCE_MODE') \|\| MAINTENANCE_MODE != 'update') {
webmaster@1	312 module_invoke_all('exit', $url);
webmaster@1	313 }
webmaster@1	314
webmaster@1	315 // Even though session_write_close() is registered as a shutdown function, we
webmaster@1	316 // need all session data written to the database before redirecting.
webmaster@1	317 session_write_close();
webmaster@1	318
webmaster@1	319 header('Location: '. $url, TRUE, $http_response_code);
webmaster@1	320
webmaster@1	321 // The "Location" header sends a redirect status code to the HTTP daemon. In
webmaster@1	322 // some cases this can be wrong, so we make sure none of the code below the
webmaster@1	323 // drupal_goto() call gets executed upon redirection.
webmaster@1	324 exit();
webmaster@1	325 }
webmaster@1	326
webmaster@1	327 /**
webmaster@1	328 * Generates a site off-line message.
webmaster@1	329 */
webmaster@1	330 function drupal_site_offline() {
webmaster@1	331 drupal_maintenance_theme();
webmaster@1	332 drupal_set_header('HTTP/1.1 503 Service unavailable');
webmaster@1	333 drupal_set_title(t('Site off-line'));
webmaster@1	334 print theme('maintenance_page', filter_xss_admin(variable_get('site_offline_message',
webmaster@1	335 t('@site is currently under maintenance. We should be back shortly. Thank you for your patience.', array('@site' => variable_get('site_name', 'Drupal'))))));
webmaster@1	336 }
webmaster@1	337
webmaster@1	338 /**
webmaster@1	339 * Generates a 404 error if the request can not be handled.
webmaster@1	340 */
webmaster@1	341 function drupal_not_found() {
webmaster@1	342 drupal_set_header('HTTP/1.1 404 Not Found');
webmaster@1	343
webmaster@1	344 watchdog('page not found', check_plain($_GET['q']), NULL, WATCHDOG_WARNING);
webmaster@1	345
webmaster@1	346 // Keep old path for reference.
webmaster@1	347 if (!isset($_REQUEST['destination'])) {
webmaster@1	348 $_REQUEST['destination'] = $_GET['q'];
webmaster@1	349 }
webmaster@1	350
webmaster@1	351 $path = drupal_get_normal_path(variable_get('site_404', ''));
webmaster@1	352 if ($path && $path != $_GET['q']) {
webmaster@1	353 // Set the active item in case there are tabs to display, or other
webmaster@1	354 // dependencies on the path.
webmaster@1	355 menu_set_active_item($path);
webmaster@1	356 $return = menu_execute_active_handler($path);
webmaster@1	357 }
webmaster@1	358
webmaster@1	359 if (empty($return) \|\| $return == MENU_NOT_FOUND \|\| $return == MENU_ACCESS_DENIED) {
webmaster@1	360 drupal_set_title(t('Page not found'));
webmaster@1	361 $return = t('The requested page could not be found.');
webmaster@1	362 }
webmaster@1	363
webmaster@1	364 // To conserve CPU and bandwidth, omit the blocks.
webmaster@1	365 print theme('page', $return, FALSE);
webmaster@1	366 }
webmaster@1	367
webmaster@1	368 /**
webmaster@1	369 * Generates a 403 error if the request is not allowed.
webmaster@1	370 */
webmaster@1	371 function drupal_access_denied() {
webmaster@1	372 drupal_set_header('HTTP/1.1 403 Forbidden');
webmaster@1	373 watchdog('access denied', check_plain($_GET['q']), NULL, WATCHDOG_WARNING);
webmaster@1	374
webmaster@1	375 // Keep old path for reference.
webmaster@1	376 if (!isset($_REQUEST['destination'])) {
webmaster@1	377 $_REQUEST['destination'] = $_GET['q'];
webmaster@1	378 }
webmaster@1	379
webmaster@1	380 $path = drupal_get_normal_path(variable_get('site_403', ''));
webmaster@1	381 if ($path && $path != $_GET['q']) {
webmaster@1	382 // Set the active item in case there are tabs to display or other
webmaster@1	383 // dependencies on the path.
webmaster@1	384 menu_set_active_item($path);
webmaster@1	385 $return = menu_execute_active_handler($path);
webmaster@1	386 }
webmaster@1	387
webmaster@1	388 if (empty($return) \|\| $return == MENU_NOT_FOUND \|\| $return == MENU_ACCESS_DENIED) {
webmaster@1	389 drupal_set_title(t('Access denied'));
webmaster@1	390 $return = t('You are not authorized to access this page.');
webmaster@1	391 }
webmaster@1	392 print theme('page', $return);
webmaster@1	393 }
webmaster@1	394
webmaster@1	395 /**
webmaster@1	396 * Perform an HTTP request.
webmaster@1	397 *
webmaster@1	398 * This is a flexible and powerful HTTP client implementation. Correctly handles
webmaster@1	399 * GET, POST, PUT or any other HTTP requests. Handles redirects.
webmaster@1	400 *
webmaster@1	401 * @param $url
webmaster@1	402 * A string containing a fully qualified URI.
webmaster@1	403 * @param $headers
webmaster@1	404 * An array containing an HTTP header => value pair.
webmaster@1	405 * @param $method
webmaster@1	406 * A string defining the HTTP request to use.
webmaster@1	407 * @param $data
webmaster@1	408 * A string containing data to include in the request.
webmaster@1	409 * @param $retry
webmaster@1	410 * An integer representing how many times to retry the request in case of a
webmaster@1	411 * redirect.
webmaster@1	412 * @return
webmaster@1	413 * An object containing the HTTP request headers, response code, headers,
webmaster@1	414 * data and redirect status.
webmaster@1	415 */
webmaster@1	416 function drupal_http_request($url, $headers = array(), $method = 'GET', $data = NULL, $retry = 3) {
webmaster@1	417 static $self_test = FALSE;
webmaster@1	418 $result = new stdClass();
webmaster@1	419 // Try to clear the drupal_http_request_fails variable if it's set. We
webmaster@1	420 // can't tie this call to any error because there is no surefire way to
webmaster@1	421 // tell whether a request has failed, so we add the check to places where
webmaster@1	422 // some parsing has failed.
webmaster@1	423 if (!$self_test && variable_get('drupal_http_request_fails', FALSE)) {
webmaster@1	424 $self_test = TRUE;
webmaster@1	425 $works = module_invoke('system', 'check_http_request');
webmaster@1	426 $self_test = FALSE;
webmaster@1	427 if (!$works) {
webmaster@1	428 // Do not bother with further operations if we already know that we
webmaster@1	429 // have no chance.
webmaster@1	430 $result->error = t("The server can't issue HTTP requests");
webmaster@1	431 return $result;
webmaster@1	432 }
webmaster@1	433 }
webmaster@1	434
webmaster@1	435 // Parse the URL and make sure we can handle the schema.
webmaster@1	436 $uri = parse_url($url);
webmaster@1	437
webmaster@1	438 switch ($uri['scheme']) {
webmaster@1	439 case 'http':
webmaster@1	440 $port = isset($uri['port']) ? $uri['port'] : 80;
webmaster@1	441 $host = $uri['host'] . ($port != 80 ? ':'. $port : '');
webmaster@1	442 $fp = @fsockopen($uri['host'], $port, $errno, $errstr, 15);
webmaster@1	443 break;
webmaster@1	444 case 'https':
webmaster@1	445 // Note: Only works for PHP 4.3 compiled with OpenSSL.
webmaster@1	446 $port = isset($uri['port']) ? $uri['port'] : 443;
webmaster@1	447 $host = $uri['host'] . ($port != 443 ? ':'. $port : '');
webmaster@1	448 $fp = @fsockopen('ssl://'. $uri['host'], $port, $errno, $errstr, 20);
webmaster@1	449 break;
webmaster@1	450 default:
webmaster@1	451 $result->error = 'invalid schema '. $uri['scheme'];
webmaster@1	452 return $result;
webmaster@1	453 }
webmaster@1	454
webmaster@1	455 // Make sure the socket opened properly.
webmaster@1	456 if (!$fp) {
webmaster@1	457 // When a network error occurs, we use a negative number so it does not
webmaster@1	458 // clash with the HTTP status codes.
webmaster@1	459 $result->code = -$errno;
webmaster@1	460 $result->error = trim($errstr);
webmaster@1	461 return $result;
webmaster@1	462 }
webmaster@1	463
webmaster@1	464 // Construct the path to act on.
webmaster@1	465 $path = isset($uri['path']) ? $uri['path'] : '/';
webmaster@1	466 if (isset($uri['query'])) {
webmaster@1	467 $path .= '?'. $uri['query'];
webmaster@1	468 }
webmaster@1	469
webmaster@1	470 // Create HTTP request.
webmaster@1	471 $defaults = array(
webmaster@1	472 // RFC 2616: "non-standard ports MUST, default ports MAY be included".
webmaster@1	473 // We don't add the port to prevent from breaking rewrite rules checking the
webmaster@1	474 // host that do not take into account the port number.
webmaster@1	475 'Host' => "Host: $host",
webmaster@1	476 'User-Agent' => 'User-Agent: Drupal (+http://drupal.org/)',
webmaster@1	477 'Content-Length' => 'Content-Length: '. strlen($data)
webmaster@1	478 );
webmaster@1	479
webmaster@1	480 // If the server url has a user then attempt to use basic authentication
webmaster@1	481 if (isset($uri['user'])) {
webmaster@1	482 $defaults['Authorization'] = 'Authorization: Basic '. base64_encode($uri['user'] . (!empty($uri['pass']) ? ":". $uri['pass'] : ''));
webmaster@1	483 }
webmaster@1	484
webmaster@1	485 foreach ($headers as $header => $value) {
webmaster@1	486 $defaults[$header] = $header .': '. $value;
webmaster@1	487 }
webmaster@1	488
webmaster@1	489 $request = $method .' '. $path ." HTTP/1.0\r\n";
webmaster@1	490 $request .= implode("\r\n", $defaults);
webmaster@1	491 $request .= "\r\n\r\n";
webmaster@1	492 if ($data) {
webmaster@1	493 $request .= $data ."\r\n";
webmaster@1	494 }
webmaster@1	495 $result->request = $request;
webmaster@1	496
webmaster@1	497 fwrite($fp, $request);
webmaster@1	498
webmaster@1	499 // Fetch response.
webmaster@1	500 $response = '';
webmaster@1	501 while (!feof($fp) && $chunk = fread($fp, 1024)) {
webmaster@1	502 $response .= $chunk;
webmaster@1	503 }
webmaster@1	504 fclose($fp);
webmaster@1	505
webmaster@1	506 // Parse response.
webmaster@1	507 list($split, $result->data) = explode("\r\n\r\n", $response, 2);
webmaster@1	508 $split = preg_split("/\r\n\|\n\|\r/", $split);
webmaster@1	509
webmaster@1	510 list($protocol, $code, $text) = explode(' ', trim(array_shift($split)), 3);
webmaster@1	511 $result->headers = array();
webmaster@1	512
webmaster@1	513 // Parse headers.
webmaster@1	514 while ($line = trim(array_shift($split))) {
webmaster@1	515 list($header, $value) = explode(':', $line, 2);
webmaster@1	516 if (isset($result->headers[$header]) && $header == 'Set-Cookie') {
webmaster@1	517 // RFC 2109: the Set-Cookie response header comprises the token Set-
webmaster@1	518 // Cookie:, followed by a comma-separated list of one or more cookies.
webmaster@1	519 $result->headers[$header] .= ','. trim($value);
webmaster@1	520 }
webmaster@1	521 else {
webmaster@1	522 $result->headers[$header] = trim($value);
webmaster@1	523 }
webmaster@1	524 }
webmaster@1	525
webmaster@1	526 $responses = array(
webmaster@1	527 100 => 'Continue', 101 => 'Switching Protocols',
webmaster@1	528 200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content',
webmaster@1	529 300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 307 => 'Temporary Redirect',
webmaster@1	530 400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Time-out', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Large', 415 => 'Unsupported Media Type', 416 => 'Requested range not satisfiable', 417 => 'Expectation Failed',
webmaster@1	531 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Time-out', 505 => 'HTTP Version not supported'
webmaster@1	532 );
webmaster@1	533 // RFC 2616 states that all unknown HTTP codes must be treated the same as the
webmaster@1	534 // base code in their class.
webmaster@1	535 if (!isset($responses[$code])) {
webmaster@1	536 $code = floor($code / 100) * 100;
webmaster@1	537 }
webmaster@1	538
webmaster@1	539 switch ($code) {
webmaster@1	540 case 200: // OK
webmaster@1	541 case 304: // Not modified
webmaster@1	542 break;
webmaster@1	543 case 301: // Moved permanently
webmaster@1	544 case 302: // Moved temporarily
webmaster@1	545 case 307: // Moved temporarily
webmaster@1	546 $location = $result->headers['Location'];
webmaster@1	547
webmaster@1	548 if ($retry) {
webmaster@1	549 $result = drupal_http_request($result->headers['Location'], $headers, $method, $data, --$retry);
webmaster@1	550 $result->redirect_code = $result->code;
webmaster@1	551 }
webmaster@1	552 $result->redirect_url = $location;
webmaster@1	553
webmaster@1	554 break;
webmaster@1	555 default:
webmaster@1	556 $result->error = $text;
webmaster@1	557 }
webmaster@1	558
webmaster@1	559 $result->code = $code;
webmaster@1	560 return $result;
webmaster@1	561 }
webmaster@1	562 /**
webmaster@1	563 * @} End of "HTTP handling".
webmaster@1	564 */
webmaster@1	565
webmaster@1	566 /**
webmaster@1	567 * Log errors as defined by administrator.
webmaster@1	568 *
webmaster@1	569 * Error levels:
webmaster@1	570 * - 0 = Log errors to database.
webmaster@1	571 * - 1 = Log errors to database and to screen.
webmaster@1	572 */
webmaster@1	573 function drupal_error_handler($errno, $message, $filename, $line, $context) {
webmaster@1	574 // If the @ error suppression operator was used, error_reporting is
webmaster@1	575 // temporarily set to 0.
webmaster@1	576 if (error_reporting() == 0) {
webmaster@1	577 return;
webmaster@1	578 }
webmaster@1	579
webmaster@1	580 if ($errno & (E_ALL ^ E_NOTICE)) {
webmaster@1	581 $types = array(1 => 'error', 2 => 'warning', 4 => 'parse error', 8 => 'notice', 16 => 'core error', 32 => 'core warning', 64 => 'compile error', 128 => 'compile warning', 256 => 'user error', 512 => 'user warning', 1024 => 'user notice', 2048 => 'strict warning', 4096 => 'recoverable fatal error');
webmaster@1	582
webmaster@1	583 // For database errors, we want the line number/file name of the place that
webmaster@1	584 // the query was originally called, not _db_query().
webmaster@1	585 if (isset($context[DB_ERROR])) {
webmaster@1	586 $backtrace = array_reverse(debug_backtrace());
webmaster@1	587
webmaster@1	588 // List of functions where SQL queries can originate.
webmaster@1	589 $query_functions = array('db_query', 'pager_query', 'db_query_range', 'db_query_temporary', 'update_sql');
webmaster@1	590
webmaster@1	591 // Determine where query function was called, and adjust line/file
webmaster@1	592 // accordingly.
webmaster@1	593 foreach ($backtrace as $index => $function) {
webmaster@1	594 if (in_array($function['function'], $query_functions)) {
webmaster@1	595 $line = $backtrace[$index]['line'];
webmaster@1	596 $filename = $backtrace[$index]['file'];
webmaster@1	597 break;
webmaster@1	598 }
webmaster@1	599 }
webmaster@1	600 }
webmaster@1	601
webmaster@1	602 $entry = $types[$errno] .': '. $message .' in '. $filename .' on line '. $line .'.';
webmaster@1	603
webmaster@1	604 // Force display of error messages in update.php.
webmaster@1	605 if (variable_get('error_level', 1) == 1 \|\| strstr($_SERVER['SCRIPT_NAME'], 'update.php')) {
webmaster@1	606 drupal_set_message($entry, 'error');
webmaster@1	607 }
webmaster@1	608
webmaster@1	609 watchdog('php', '%message in %file on line %line.', array('%error' => $types[$errno], '%message' => $message, '%file' => $filename, '%line' => $line), WATCHDOG_ERROR);
webmaster@1	610 }
webmaster@1	611 }
webmaster@1	612
webmaster@1	613 function _fix_gpc_magic(&$item) {
webmaster@1	614 if (is_array($item)) {
webmaster@1	615 array_walk($item, '_fix_gpc_magic');
webmaster@1	616 }
webmaster@1	617 else {
webmaster@1	618 $item = stripslashes($item);
webmaster@1	619 }
webmaster@1	620 }
webmaster@1	621
webmaster@1	622 /**
webmaster@1	623 * Helper function to strip slashes from $_FILES skipping over the tmp_name keys
webmaster@1	624 * since PHP generates single backslashes for file paths on Windows systems.
webmaster@1	625 *
webmaster@1	626 * tmp_name does not have backslashes added see
webmaster@1	627 * http://php.net/manual/en/features.file-upload.php#42280
webmaster@1	628 */
webmaster@1	629 function _fix_gpc_magic_files(&$item, $key) {
webmaster@1	630 if ($key != 'tmp_name') {
webmaster@1	631 if (is_array($item)) {
webmaster@1	632 array_walk($item, '_fix_gpc_magic_files');
webmaster@1	633 }
webmaster@1	634 else {
webmaster@1	635 $item = stripslashes($item);
webmaster@1	636 }
webmaster@1	637 }
webmaster@1	638 }
webmaster@1	639
webmaster@1	640 /**
webmaster@1	641 * Fix double-escaping problems caused by "magic quotes" in some PHP installations.
webmaster@1	642 */
webmaster@1	643 function fix_gpc_magic() {
webmaster@1	644 static $fixed = FALSE;
webmaster@1	645 if (!$fixed && ini_get('magic_quotes_gpc')) {
webmaster@1	646 array_walk($_GET, '_fix_gpc_magic');
webmaster@1	647 array_walk($_POST, '_fix_gpc_magic');
webmaster@1	648 array_walk($_COOKIE, '_fix_gpc_magic');
webmaster@1	649 array_walk($_REQUEST, '_fix_gpc_magic');
webmaster@1	650 array_walk($_FILES, '_fix_gpc_magic_files');
webmaster@1	651 $fixed = TRUE;
webmaster@1	652 }
webmaster@1	653 }
webmaster@1	654
webmaster@1	655 /**
webmaster@1	656 * Translate strings to the page language or a given language.
webmaster@1	657 *
webmaster@1	658 * All human-readable text that will be displayed somewhere within a page should
webmaster@1	659 * be run through the t() function.
webmaster@1	660 *
webmaster@1	661 * Examples:
webmaster@1	662 * @code
webmaster@1	663 * if (!$info \|\| !$info['extension']) {
webmaster@1	664 * form_set_error('picture_upload', t('The uploaded file was not an image.'));
webmaster@1	665 * }
webmaster@1	666 *
webmaster@1	667 * $form['submit'] = array(
webmaster@1	668 * '#type' => 'submit',
webmaster@1	669 * '#value' => t('Log in'),
webmaster@1	670 * );
webmaster@1	671 * @endcode
webmaster@1	672 *
webmaster@1	673 * Any text within t() can be extracted by translators and changed into
webmaster@1	674 * the equivalent text in their native language.
webmaster@1	675 *
webmaster@1	676 * Special variables called "placeholders" are used to signal dynamic
webmaster@1	677 * information in a string which should not be translated. Placeholders
webmaster@1	678 * can also be used for text that may change from time to time
webmaster@1	679 * (such as link paths) to be changed without requiring updates to translations.
webmaster@1	680 *
webmaster@1	681 * For example:
webmaster@1	682 * @code
webmaster@1	683 * $output = t('There are currently %members and %visitors online.', array(
webmaster@1	684 * '%members' => format_plural($total_users, '1 user', '@count users'),
webmaster@1	685 * '%visitors' => format_plural($guests->count, '1 guest', '@count guests')));
webmaster@1	686 * @endcode
webmaster@1	687 *
webmaster@1	688 * There are three styles of placeholders:
webmaster@1	689 * - !variable, which indicates that the text should be inserted as-is. This is
webmaster@1	690 * useful for inserting variables into things like e-mail.
webmaster@1	691 * @code
webmaster@1	692 * $message[] = t("If you don't want to receive such e-mails, you can change your settings at !url.", array('!url' => url("user/$account->uid", array('absolute' => TRUE))));
webmaster@1	693 * @endcode
webmaster@1	694 *
webmaster@1	695 * - @variable, which indicates that the text should be run through check_plain,
webmaster@1	696 * to escape HTML characters. Use this for any output that's displayed within
webmaster@1	697 * a Drupal page.
webmaster@1	698 * @code
webmaster@1	699 * drupal_set_title($title = t("@name's blog", array('@name' => $account->name)));
webmaster@1	700 * @endcode
webmaster@1	701 *
webmaster@1	702 * - %variable, which indicates that the string should be HTML escaped and
webmaster@1	703 * highlighted with theme_placeholder() which shows up by default as
webmaster@1	704 * <em>emphasized</em>.
webmaster@1	705 * @code
webmaster@1	706 * $message = t('%name-from sent %name-to an e-mail.', array('%name-from' => $user->name, '%name-to' => $account->name));
webmaster@1	707 * @endcode
webmaster@1	708 *
webmaster@1	709 * When using t(), try to put entire sentences and strings in one t() call.
webmaster@1	710 * This makes it easier for translators, as it provides context as to what each
webmaster@1	711 * word refers to. HTML markup within translation strings is allowed, but should
webmaster@1	712 * be avoided if possible. The exception are embedded links; link titles add a
webmaster@1	713 * context for translators, so should be kept in the main string.
webmaster@1	714 *
webmaster@1	715 * Here is an example of incorrect usage of t():
webmaster@1	716 * @code
webmaster@1	717 * $output .= t('<p>Go to the @contact-page.</p>', array('@contact-page' => l(t('contact page'), 'contact')));
webmaster@1	718 * @endcode
webmaster@1	719 *
webmaster@1	720 * Here is an example of t() used correctly:
webmaster@1	721 * @code
webmaster@1	722 * $output .= '<p>'. t('Go to the <a href="@contact-page">contact page</a>.', array('@contact-page' => url('contact'))) .'</p>';
webmaster@1	723 * @endcode
webmaster@1	724 *
webmaster@1	725 * Also avoid escaping quotation marks wherever possible.
webmaster@1	726 *
webmaster@1	727 * Incorrect:
webmaster@1	728 * @code
webmaster@1	729 * $output .= t('Don\'t click me.');
webmaster@1	730 * @endcode
webmaster@1	731 *
webmaster@1	732 * Correct:
webmaster@1	733 * @code
webmaster@1	734 * $output .= t("Don't click me.");
webmaster@1	735 * @endcode
webmaster@1	736 *
webmaster@1	737 * @param $string
webmaster@1	738 * A string containing the English string to translate.
webmaster@1	739 * @param $args
webmaster@1	740 * An associative array of replacements to make after translation. Incidences
webmaster@1	741 * of any key in this array are replaced with the corresponding value.
webmaster@1	742 * Based on the first character of the key, the value is escaped and/or themed:
webmaster@1	743 * - !variable: inserted as is
webmaster@1	744 * - @variable: escape plain text to HTML (check_plain)
webmaster@1	745 * - %variable: escape text and theme as a placeholder for user-submitted
webmaster@1	746 * content (check_plain + theme_placeholder)
webmaster@1	747 * @param $langcode
webmaster@1	748 * Optional language code to translate to a language other than what is used
webmaster@1	749 * to display the page.
webmaster@1	750 * @return
webmaster@1	751 * The translated string.
webmaster@1	752 */
webmaster@1	753 function t($string, $args = array(), $langcode = NULL) {
webmaster@1	754 global $language;
webmaster@1	755 static $custom_strings;
webmaster@1	756
webmaster@1	757 $langcode = isset($langcode) ? $langcode : $language->language;
webmaster@1	758
webmaster@1	759 // First, check for an array of customized strings. If present, use the array
webmaster@1	760 // instead of database lookups. This is a high performance way to provide a
webmaster@1	761 // handful of string replacements. See settings.php for examples.
webmaster@1	762 // Cache the $custom_strings variable to improve performance.
webmaster@1	763 if (!isset($custom_strings[$langcode])) {
webmaster@1	764 $custom_strings[$langcode] = variable_get('locale_custom_strings_'. $langcode, array());
webmaster@1	765 }
webmaster@1	766 // Custom strings work for English too, even if locale module is disabled.
webmaster@1	767 if (isset($custom_strings[$langcode][$string])) {
webmaster@1	768 $string = $custom_strings[$langcode][$string];
webmaster@1	769 }
webmaster@1	770 // Translate with locale module if enabled.
webmaster@1	771 elseif (function_exists('locale') && $langcode != 'en') {
webmaster@1	772 $string = locale($string, $langcode);
webmaster@1	773 }
webmaster@1	774 if (empty($args)) {
webmaster@1	775 return $string;
webmaster@1	776 }
webmaster@1	777 else {
webmaster@1	778 // Transform arguments before inserting them.
webmaster@1	779 foreach ($args as $key => $value) {
webmaster@1	780 switch ($key[0]) {
webmaster@1	781 case '@':
webmaster@1	782 // Escaped only.
webmaster@1	783 $args[$key] = check_plain($value);
webmaster@1	784 break;
webmaster@1	785
webmaster@1	786 case '%':
webmaster@1	787 default:
webmaster@1	788 // Escaped and placeholder.
webmaster@1	789 $args[$key] = theme('placeholder', $value);
webmaster@1	790 break;
webmaster@1	791
webmaster@1	792 case '!':
webmaster@1	793 // Pass-through.
webmaster@1	794 }
webmaster@1	795 }
webmaster@1	796 return strtr($string, $args);
webmaster@1	797 }
webmaster@1	798 }
webmaster@1	799
webmaster@1	800 /**
webmaster@1	801 * @defgroup validation Input validation
webmaster@1	802 * @{
webmaster@1	803 * Functions to validate user input.
webmaster@1	804 */
webmaster@1	805
webmaster@1	806 /**
webmaster@1	807 * Verify the syntax of the given e-mail address.
webmaster@1	808 *
webmaster@1	809 * Empty e-mail addresses are allowed. See RFC 2822 for details.
webmaster@1	810 *
webmaster@1	811 * @param $mail
webmaster@1	812 * A string containing an e-mail address.
webmaster@1	813 * @return
webmaster@1	814 * TRUE if the address is in a valid format.
webmaster@1	815 */
webmaster@1	816 function valid_email_address($mail) {
webmaster@1	817 $user = '[a-zA-Z0-9_\-\.\+\^!#\$%&*+\/\=\?\`\\|\{\}~\']+';
webmaster@1	818 $domain = '(?:(?:[a-zA-Z0-9]\|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.?)+';
webmaster@1	819 $ipv4 = '[0-9]{1,3}(\.[0-9]{1,3}){3}';
webmaster@1	820 $ipv6 = '[0-9a-fA-F]{1,4}(\:[0-9a-fA-F]{1,4}){7}';
webmaster@1	821
webmaster@1	822 return preg_match("/^$user@($domain\|(\[($ipv4\|$ipv6)\]))$/", $mail);
webmaster@1	823 }
webmaster@1	824
webmaster@1	825 /**
webmaster@1	826 * Verify the syntax of the given URL.
webmaster@1	827 *
webmaster@1	828 * This function should only be used on actual URLs. It should not be used for
webmaster@1	829 * Drupal menu paths, which can contain arbitrary characters.
webmaster@1	830 *
webmaster@1	831 * @param $url
webmaster@1	832 * The URL to verify.
webmaster@1	833 * @param $absolute
webmaster@1	834 * Whether the URL is absolute (beginning with a scheme such as "http:").
webmaster@1	835 * @return
webmaster@1	836 * TRUE if the URL is in a valid format.
webmaster@1	837 */
webmaster@1	838 function valid_url($url, $absolute = FALSE) {
webmaster@1	839 $allowed_characters = '[a-z0-9\/:_\-_\.\?\$,;~=#&%\+]';
webmaster@1	840 if ($absolute) {
webmaster@1	841 return preg_match("/^(http\|https\|ftp):\/\/". $allowed_characters ."+$/i", $url);
webmaster@1	842 }
webmaster@1	843 else {
webmaster@1	844 return preg_match("/^". $allowed_characters ."+$/i", $url);
webmaster@1	845 }
webmaster@1	846 }
webmaster@1	847
webmaster@1	848 /**
webmaster@1	849 * @} End of "defgroup validation".
webmaster@1	850 */
webmaster@1	851
webmaster@1	852 /**
webmaster@1	853 * Register an event for the current visitor (hostname/IP) to the flood control mechanism.
webmaster@1	854 *
webmaster@1	855 * @param $name
webmaster@1	856 * The name of an event.
webmaster@1	857 */
webmaster@1	858 function flood_register_event($name) {
webmaster@1	859 db_query("INSERT INTO {flood} (event, hostname, timestamp) VALUES ('%s', '%s', %d)", $name, ip_address(), time());
webmaster@1	860 }
webmaster@1	861
webmaster@1	862 /**
webmaster@1	863 * Check if the current visitor (hostname/IP) is allowed to proceed with the specified event.
webmaster@1	864 *
webmaster@1	865 * The user is allowed to proceed if he did not trigger the specified event more
webmaster@1	866 * than $threshold times per hour.
webmaster@1	867 *
webmaster@1	868 * @param $name
webmaster@1	869 * The name of the event.
webmaster@1	870 * @param $number
webmaster@1	871 * The maximum number of the specified event per hour (per visitor).
webmaster@1	872 * @return
webmaster@1	873 * True if the user did not exceed the hourly threshold. False otherwise.
webmaster@1	874 */
webmaster@1	875 function flood_is_allowed($name, $threshold) {
webmaster@1	876 $number = db_result(db_query("SELECT COUNT(*) FROM {flood} WHERE event = '%s' AND hostname = '%s' AND timestamp > %d", $name, ip_address(), time() - 3600));
webmaster@1	877 return ($number < $threshold ? TRUE : FALSE);
webmaster@1	878 }
webmaster@1	879
webmaster@1	880 function check_file($filename) {
webmaster@1	881 return is_uploaded_file($filename);
webmaster@1	882 }
webmaster@1	883
webmaster@1	884 /**
webmaster@1	885 * Prepare a URL for use in an HTML attribute. Strips harmful protocols.
webmaster@1	886 */
webmaster@1	887 function check_url($uri) {
webmaster@1	888 return filter_xss_bad_protocol($uri, FALSE);
webmaster@1	889 }
webmaster@1	890
webmaster@1	891 /**
webmaster@1	892 * @defgroup format Formatting
webmaster@1	893 * @{
webmaster@1	894 * Functions to format numbers, strings, dates, etc.
webmaster@1	895 */
webmaster@1	896
webmaster@1	897 /**
webmaster@1	898 * Formats an RSS channel.
webmaster@1	899 *
webmaster@1	900 * Arbitrary elements may be added using the $args associative array.
webmaster@1	901 */
webmaster@1	902 function format_rss_channel($title, $link, $description, $items, $langcode = NULL, $args = array()) {
webmaster@1	903 global $language;
webmaster@1	904 $langcode = $langcode ? $langcode : $language->language;
webmaster@1	905
webmaster@1	906 $output = "<channel>\n";
webmaster@1	907 $output .= ' <title>'. check_plain($title) ."</title>\n";
webmaster@1	908 $output .= ' <link>'. check_url($link) ."</link>\n";
webmaster@1	909
webmaster@1	910 // The RSS 2.0 "spec" doesn't indicate HTML can be used in the description.
webmaster@1	911 // We strip all HTML tags, but need to prevent double encoding from properly
webmaster@1	912 // escaped source data (such as &amp becoming &amp;).
webmaster@1	913 $output .= ' <description>'. check_plain(decode_entities(strip_tags($description))) ."</description>\n";
webmaster@1	914 $output .= ' <language>'. check_plain($langcode) ."</language>\n";
webmaster@1	915 $output .= format_xml_elements($args);
webmaster@1	916 $output .= $items;
webmaster@1	917 $output .= "</channel>\n";
webmaster@1	918
webmaster@1	919 return $output;
webmaster@1	920 }
webmaster@1	921
webmaster@1	922 /**
webmaster@1	923 * Format a single RSS item.
webmaster@1	924 *
webmaster@1	925 * Arbitrary elements may be added using the $args associative array.
webmaster@1	926 */
webmaster@1	927 function format_rss_item($title, $link, $description, $args = array()) {
webmaster@1	928 $output = "<item>\n";
webmaster@1	929 $output .= ' <title>'. check_plain($title) ."</title>\n";
webmaster@1	930 $output .= ' <link>'. check_url($link) ."</link>\n";
webmaster@1	931 $output .= ' <description>'. check_plain($description) ."</description>\n";
webmaster@1	932 $output .= format_xml_elements($args);
webmaster@1	933 $output .= "</item>\n";
webmaster@1	934
webmaster@1	935 return $output;
webmaster@1	936 }
webmaster@1	937
webmaster@1	938 /**
webmaster@1	939 * Format XML elements.
webmaster@1	940 *
webmaster@1	941 * @param $array
webmaster@1	942 * An array where each item represent an element and is either a:
webmaster@1	943 * - (key => value) pair (<key>value</key>)
webmaster@1	944 * - Associative array with fields:
webmaster@1	945 * - 'key': element name
webmaster@1	946 * - 'value': element contents
webmaster@1	947 * - 'attributes': associative array of element attributes
webmaster@1	948 *
webmaster@1	949 * In both cases, 'value' can be a simple string, or it can be another array
webmaster@1	950 * with the same format as $array itself for nesting.
webmaster@1	951 */
webmaster@1	952 function format_xml_elements($array) {
webmaster@1	953 $output = '';
webmaster@1	954 foreach ($array as $key => $value) {
webmaster@1	955 if (is_numeric($key)) {
webmaster@1	956 if ($value['key']) {
webmaster@1	957 $output .= ' <'. $value['key'];
webmaster@1	958 if (isset($value['attributes']) && is_array($value['attributes'])) {
webmaster@1	959 $output .= drupal_attributes($value['attributes']);
webmaster@1	960 }
webmaster@1	961
webmaster@1	962 if ($value['value'] != '') {
webmaster@1	963 $output .= '>'. (is_array($value['value']) ? format_xml_elements($value['value']) : check_plain($value['value'])) .'</'. $value['key'] .">\n";
webmaster@1	964 }
webmaster@1	965 else {
webmaster@1	966 $output .= " />\n";
webmaster@1	967 }
webmaster@1	968 }
webmaster@1	969 }
webmaster@1	970 else {
webmaster@1	971 $output .= ' <'. $key .'>'. (is_array($value) ? format_xml_elements($value) : check_plain($value)) ."</$key>\n";
webmaster@1	972 }
webmaster@1	973 }
webmaster@1	974 return $output;
webmaster@1	975 }
webmaster@1	976
webmaster@1	977 /**
webmaster@1	978 * Format a string containing a count of items.
webmaster@1	979 *
webmaster@1	980 * This function ensures that the string is pluralized correctly. Since t() is
webmaster@1	981 * called by this function, make sure not to pass already-localized strings to
webmaster@1	982 * it.
webmaster@1	983 *
webmaster@1	984 * For example:
webmaster@1	985 * @code
webmaster@1	986 * $output = format_plural($node->comment_count, '1 comment', '@count comments');
webmaster@1	987 * @endcode
webmaster@1	988 *
webmaster@1	989 * Example with additional replacements:
webmaster@1	990 * @code
webmaster@1	991 * $output = format_plural($update_count,
webmaster@1	992 * 'Changed the content type of 1 post from %old-type to %new-type.',
webmaster@1	993 * 'Changed the content type of @count posts from %old-type to %new-type.',
webmaster@1	994 * array('%old-type' => $info->old_type, '%new-type' => $info->new_type)));
webmaster@1	995 * @endcode
webmaster@1	996 *
webmaster@1	997 * @param $count
webmaster@1	998 * The item count to display.
webmaster@1	999 * @param $singular
webmaster@1	1000 * The string for the singular case. Please make sure it is clear this is
webmaster@1	1001 * singular, to ease translation (e.g. use "1 new comment" instead of "1 new").
webmaster@1	1002 * Do not use @count in the singular string.
webmaster@1	1003 * @param $plural
webmaster@1	1004 * The string for the plural case. Please make sure it is clear this is plural,
webmaster@1	1005 * to ease translation. Use @count in place of the item count, as in "@count
webmaster@1	1006 * new comments".
webmaster@1	1007 * @param $args
webmaster@1	1008 * An associative array of replacements to make after translation. Incidences
webmaster@1	1009 * of any key in this array are replaced with the corresponding value.
webmaster@1	1010 * Based on the first character of the key, the value is escaped and/or themed:
webmaster@1	1011 * - !variable: inserted as is
webmaster@1	1012 * - @variable: escape plain text to HTML (check_plain)
webmaster@1	1013 * - %variable: escape text and theme as a placeholder for user-submitted
webmaster@1	1014 * content (check_plain + theme_placeholder)
webmaster@1	1015 * Note that you do not need to include @count in this array.
webmaster@1	1016 * This replacement is done automatically for the plural case.
webmaster@1	1017 * @param $langcode
webmaster@1	1018 * Optional language code to translate to a language other than
webmaster@1	1019 * what is used to display the page.
webmaster@1	1020 * @return
webmaster@1	1021 * A translated string.
webmaster@1	1022 */
webmaster@1	1023 function format_plural($count, $singular, $plural, $args = array(), $langcode = NULL) {
webmaster@1	1024 $args['@count'] = $count;
webmaster@1	1025 if ($count == 1) {
webmaster@1	1026 return t($singular, $args, $langcode);
webmaster@1	1027 }
webmaster@1	1028
webmaster@1	1029 // Get the plural index through the gettext formula.
webmaster@1	1030 $index = (function_exists('locale_get_plural')) ? locale_get_plural($count, $langcode) : -1;
webmaster@1	1031 // Backwards compatibility.
webmaster@1	1032 if ($index < 0) {
webmaster@1	1033 return t($plural, $args, $langcode);
webmaster@1	1034 }
webmaster@1	1035 else {
webmaster@1	1036 switch ($index) {
webmaster@1	1037 case "0":
webmaster@1	1038 return t($singular, $args, $langcode);
webmaster@1	1039 case "1":
webmaster@1	1040 return t($plural, $args, $langcode);
webmaster@1	1041 default:
webmaster@1	1042 unset($args['@count']);
webmaster@1	1043 $args['@count['. $index .']'] = $count;
webmaster@1	1044 return t(strtr($plural, array('@count' => '@count['. $index .']')), $args, $langcode);
webmaster@1	1045 }
webmaster@1	1046 }
webmaster@1	1047 }
webmaster@1	1048
webmaster@1	1049 /**
webmaster@1	1050 * Parse a given byte count.
webmaster@1	1051 *
webmaster@1	1052 * @param $size
webmaster@1	1053 * A size expressed as a number of bytes with optional SI size and unit
webmaster@1	1054 * suffix (e.g. 2, 3K, 5MB, 10G).
webmaster@1	1055 * @return
webmaster@1	1056 * An integer representation of the size.
webmaster@1	1057 */
webmaster@1	1058 function parse_size($size) {
webmaster@1	1059 $suffixes = array(
webmaster@1	1060 '' => 1,
webmaster@1	1061 'k' => 1024,
webmaster@1	1062 'm' => 1048576, // 1024 * 1024
webmaster@1	1063 'g' => 1073741824, // 1024 * 1024 * 1024
webmaster@1	1064 );
webmaster@1	1065 if (preg_match('/([0-9]+)\s*(k\|m\|g)?(b?(ytes?)?)/i', $size, $match)) {
webmaster@1	1066 return $match[1] * $suffixes[drupal_strtolower($match[2])];
webmaster@1	1067 }
webmaster@1	1068 }
webmaster@1	1069
webmaster@1	1070 /**
webmaster@1	1071 * Generate a string representation for the given byte count.
webmaster@1	1072 *
webmaster@1	1073 * @param $size
webmaster@1	1074 * A size in bytes.
webmaster@1	1075 * @param $langcode
webmaster@1	1076 * Optional language code to translate to a language other than what is used
webmaster@1	1077 * to display the page.
webmaster@1	1078 * @return
webmaster@1	1079 * A translated string representation of the size.
webmaster@1	1080 */
webmaster@1	1081 function format_size($size, $langcode = NULL) {
webmaster@1	1082 if ($size < 1024) {
webmaster@1	1083 return format_plural($size, '1 byte', '@count bytes', array(), $langcode);
webmaster@1	1084 }
webmaster@1	1085 else {
webmaster@1	1086 $size = round($size / 1024, 2);
webmaster@1	1087 $suffix = t('KB', array(), $langcode);
webmaster@1	1088 if ($size >= 1024) {
webmaster@1	1089 $size = round($size / 1024, 2);
webmaster@1	1090 $suffix = t('MB', array(), $langcode);
webmaster@1	1091 }
webmaster@1	1092 return t('@size @suffix', array('@size' => $size, '@suffix' => $suffix), $langcode);
webmaster@1	1093 }
webmaster@1	1094 }
webmaster@1	1095
webmaster@1	1096 /**
webmaster@1	1097 * Format a time interval with the requested granularity.
webmaster@1	1098 *
webmaster@1	1099 * @param $timestamp
webmaster@1	1100 * The length of the interval in seconds.
webmaster@1	1101 * @param $granularity
webmaster@1	1102 * How many different units to display in the string.
webmaster@1	1103 * @param $langcode
webmaster@1	1104 * Optional language code to translate to a language other than
webmaster@1	1105 * what is used to display the page.
webmaster@1	1106 * @return
webmaster@1	1107 * A translated string representation of the interval.
webmaster@1	1108 */
webmaster@1	1109 function format_interval($timestamp, $granularity = 2, $langcode = NULL) {
webmaster@1	1110 $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);
webmaster@1	1111 $output = '';
webmaster@1	1112 foreach ($units as $key => $value) {
webmaster@1	1113 $key = explode('\|', $key);
webmaster@1	1114 if ($timestamp >= $value) {
webmaster@1	1115 $output .= ($output ? ' ' : '') . format_plural(floor($timestamp / $value), $key[0], $key[1], array(), $langcode);
webmaster@1	1116 $timestamp %= $value;
webmaster@1	1117 $granularity--;
webmaster@1	1118 }
webmaster@1	1119
webmaster@1	1120 if ($granularity == 0) {
webmaster@1	1121 break;
webmaster@1	1122 }
webmaster@1	1123 }
webmaster@1	1124 return $output ? $output : t('0 sec', array(), $langcode);
webmaster@1	1125 }
webmaster@1	1126
webmaster@1	1127 /**
webmaster@1	1128 * Format a date with the given configured format or a custom format string.
webmaster@1	1129 *
webmaster@1	1130 * Drupal allows administrators to select formatting strings for 'small',
webmaster@1	1131 * 'medium' and 'large' date formats. This function can handle these formats,
webmaster@1	1132 * as well as any custom format.
webmaster@1	1133 *
webmaster@1	1134 * @param $timestamp
webmaster@1	1135 * The exact date to format, as a UNIX timestamp.
webmaster@1	1136 * @param $type
webmaster@1	1137 * The format to use. Can be "small", "medium" or "large" for the preconfigured
webmaster@1	1138 * date formats. If "custom" is specified, then $format is required as well.
webmaster@1	1139 * @param $format
webmaster@1	1140 * A PHP date format string as required by date(). A backslash should be used
webmaster@1	1141 * before a character to avoid interpreting the character as part of a date
webmaster@1	1142 * format.
webmaster@1	1143 * @param $timezone
webmaster@1	1144 * Time zone offset in seconds; if omitted, the user's time zone is used.
webmaster@1	1145 * @param $langcode
webmaster@1	1146 * Optional language code to translate to a language other than what is used
webmaster@1	1147 * to display the page.
webmaster@1	1148 * @return
webmaster@1	1149 * A translated date string in the requested format.
webmaster@1	1150 */
webmaster@1	1151 function format_date($timestamp, $type = 'medium', $format = '', $timezone = NULL, $langcode = NULL) {
webmaster@1	1152 if (!isset($timezone)) {
webmaster@1	1153 global $user;
webmaster@1	1154 if (variable_get('configurable_timezones', 1) && $user->uid && strlen($user->timezone)) {
webmaster@1	1155 $timezone = $user->timezone;
webmaster@1	1156 }
webmaster@1	1157 else {
webmaster@1	1158 $timezone = variable_get('date_default_timezone', 0);
webmaster@1	1159 }
webmaster@1	1160 }
webmaster@1	1161
webmaster@1	1162 $timestamp += $timezone;
webmaster@1	1163
webmaster@1	1164 switch ($type) {
webmaster@1	1165 case 'small':
webmaster@1	1166 $format = variable_get('date_format_short', 'm/d/Y - H:i');
webmaster@1	1167 break;
webmaster@1	1168 case 'large':
webmaster@1	1169 $format = variable_get('date_format_long', 'l, F j, Y - H:i');
webmaster@1	1170 break;
webmaster@1	1171 case 'custom':
webmaster@1	1172 // No change to format.
webmaster@1	1173 break;
webmaster@1	1174 case 'medium':
webmaster@1	1175 default:
webmaster@1	1176 $format = variable_get('date_format_medium', 'D, m/d/Y - H:i');
webmaster@1	1177 }
webmaster@1	1178
webmaster@1	1179 $max = strlen($format);
webmaster@1	1180 $date = '';
webmaster@1	1181 for ($i = 0; $i < $max; $i++) {
webmaster@1	1182 $c = $format[$i];
webmaster@1	1183 if (strpos('AaDlM', $c) !== FALSE) {
webmaster@1	1184 $date .= t(gmdate($c, $timestamp), array(), $langcode);
webmaster@1	1185 }
webmaster@1	1186 else if ($c == 'F') {
webmaster@1	1187 // Special treatment for long month names: May is both an abbreviation
webmaster@1	1188 // and a full month name in English, but other languages have
webmaster@1	1189 // different abbreviations.
webmaster@1	1190 $date .= trim(t('!long-month-name '. gmdate($c, $timestamp), array('!long-month-name' => ''), $langcode));
webmaster@1	1191 }
webmaster@1	1192 else if (strpos('BdgGhHiIjLmnsStTUwWYyz', $c) !== FALSE) {
webmaster@1	1193 $date .= gmdate($c, $timestamp);
webmaster@1	1194 }
webmaster@1	1195 else if ($c == 'r') {
webmaster@1	1196 $date .= format_date($timestamp - $timezone, 'custom', 'D, d M Y H:i:s O', $timezone, $langcode);
webmaster@1	1197 }
webmaster@1	1198 else if ($c == 'O') {
webmaster@1	1199 $date .= sprintf('%s%02d%02d', ($timezone < 0 ? '-' : '+'), abs($timezone / 3600), abs($timezone % 3600) / 60);
webmaster@1	1200 }
webmaster@1	1201 else if ($c == 'Z') {
webmaster@1	1202 $date .= $timezone;
webmaster@1	1203 }
webmaster@1	1204 else if ($c == '\\') {
webmaster@1	1205 $date .= $format[++$i];
webmaster@1	1206 }
webmaster@1	1207 else {
webmaster@1	1208 $date .= $c;
webmaster@1	1209 }
webmaster@1	1210 }
webmaster@1	1211
webmaster@1	1212 return $date;
webmaster@1	1213 }
webmaster@1	1214
webmaster@1	1215 /**
webmaster@1	1216 * @} End of "defgroup format".
webmaster@1	1217 */
webmaster@1	1218
webmaster@1	1219 /**
webmaster@1	1220 * Generate a URL from a Drupal menu path. Will also pass-through existing URLs.
webmaster@1	1221 *
webmaster@1	1222 * @param $path
webmaster@1	1223 * The Drupal path being linked to, such as "admin/content/node", or an
webmaster@1	1224 * existing URL like "http://drupal.org/". The special path
webmaster@1	1225 * '<front>' may also be given and will generate the site's base URL.
webmaster@1	1226 * @param $options
webmaster@1	1227 * An associative array of additional options, with the following keys:
webmaster@1	1228 * 'query'
webmaster@1	1229 * A query string to append to the link, or an array of query key/value
webmaster@1	1230 * properties.
webmaster@1	1231 * 'fragment'
webmaster@1	1232 * A fragment identifier (or named anchor) to append to the link.
webmaster@1	1233 * Do not include the '#' character.
webmaster@1	1234 * 'absolute' (default FALSE)
webmaster@1	1235 * Whether to force the output to be an absolute link (beginning with
webmaster@1	1236 * http:). Useful for links that will be displayed outside the site, such
webmaster@1	1237 * as in an RSS feed.
webmaster@1	1238 * 'alias' (default FALSE)
webmaster@1	1239 * Whether the given path is an alias already.
webmaster@1	1240 * 'external'
webmaster@1	1241 * Whether the given path is an external URL.
webmaster@1	1242 * 'language'
webmaster@1	1243 * An optional language object. Used to build the URL to link to and
webmaster@1	1244 * look up the proper alias for the link.
webmaster@1	1245 * 'base_url'
webmaster@1	1246 * Only used internally, to modify the base URL when a language dependent
webmaster@1	1247 * URL requires so.
webmaster@1	1248 * 'prefix'
webmaster@1	1249 * Only used internally, to modify the path when a language dependent URL
webmaster@1	1250 * requires so.
webmaster@1	1251 * @return
webmaster@1	1252 * A string containing a URL to the given path.
webmaster@1	1253 *
webmaster@1	1254 * When creating links in modules, consider whether l() could be a better
webmaster@1	1255 * alternative than url().
webmaster@1	1256 */
webmaster@1	1257 function url($path = NULL, $options = array()) {
webmaster@1	1258 // Merge in defaults.
webmaster@1	1259 $options += array(
webmaster@1	1260 'fragment' => '',
webmaster@1	1261 'query' => '',
webmaster@1	1262 'absolute' => FALSE,
webmaster@1	1263 'alias' => FALSE,
webmaster@1	1264 'prefix' => ''
webmaster@1	1265 );
webmaster@1	1266 if (!isset($options['external'])) {
webmaster@1	1267 // Return an external link if $path contains an allowed absolute URL.
webmaster@1	1268 // Only call the slow filter_xss_bad_protocol if $path contains a ':' before
webmaster@1	1269 // any / ? or #.
webmaster@1	1270 $colonpos = strpos($path, ':');
webmaster@1	1271 $options['external'] = ($colonpos !== FALSE && !preg_match('![/?#]!', substr($path, 0, $colonpos)) && filter_xss_bad_protocol($path, FALSE) == check_plain($path));
webmaster@1	1272 }
webmaster@1	1273
webmaster@1	1274 // May need language dependent rewriting if language.inc is present.
webmaster@1	1275 if (function_exists('language_url_rewrite')) {
webmaster@1	1276 language_url_rewrite($path, $options);
webmaster@1	1277 }
webmaster@1	1278 if ($options['fragment']) {
webmaster@1	1279 $options['fragment'] = '#'. $options['fragment'];
webmaster@1	1280 }
webmaster@1	1281 if (is_array($options['query'])) {
webmaster@1	1282 $options['query'] = drupal_query_string_encode($options['query']);
webmaster@1	1283 }
webmaster@1	1284
webmaster@1	1285 if ($options['external']) {
webmaster@1	1286 // Split off the fragment.
webmaster@1	1287 if (strpos($path, '#') !== FALSE) {
webmaster@1	1288 list($path, $old_fragment) = explode('#', $path, 2);
webmaster@1	1289 if (isset($old_fragment) && !$options['fragment']) {
webmaster@1	1290 $options['fragment'] = '#'. $old_fragment;
webmaster@1	1291 }
webmaster@1	1292 }
webmaster@1	1293 // Append the query.
webmaster@1	1294 if ($options['query']) {
webmaster@1	1295 $path .= (strpos($path, '?') !== FALSE ? '&' : '?') . $options['query'];
webmaster@1	1296 }
webmaster@1	1297 // Reassemble.
webmaster@1	1298 return $path . $options['fragment'];
webmaster@1	1299 }
webmaster@1	1300
webmaster@1	1301 global $base_url;
webmaster@1	1302 static $script;
webmaster@1	1303 static $clean_url;
webmaster@1	1304
webmaster@1	1305 if (!isset($script)) {
webmaster@1	1306 // On some web servers, such as IIS, we can't omit "index.php". So, we
webmaster@1	1307 // generate "index.php?q=foo" instead of "?q=foo" on anything that is not
webmaster@1	1308 // Apache.
webmaster@1	1309 $script = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') === FALSE) ? 'index.php' : '';
webmaster@1	1310 }
webmaster@1	1311
webmaster@1	1312 // Cache the clean_url variable to improve performance.
webmaster@1	1313 if (!isset($clean_url)) {
webmaster@1	1314 $clean_url = (bool)variable_get('clean_url', '0');
webmaster@1	1315 }
webmaster@1	1316
webmaster@1	1317 if (!isset($options['base_url'])) {
webmaster@1	1318 // The base_url might be rewritten from the language rewrite in domain mode.
webmaster@1	1319 $options['base_url'] = $base_url;
webmaster@1	1320 }
webmaster@1	1321
webmaster@1	1322 // Preserve the original path before aliasing.
webmaster@1	1323 $original_path = $path;
webmaster@1	1324
webmaster@1	1325 // The special path '<front>' links to the default front page.
webmaster@1	1326 if ($path == '<front>') {
webmaster@1	1327 $path = '';
webmaster@1	1328 }
webmaster@1	1329 elseif (!empty($path) && !$options['alias']) {
webmaster@1	1330 $path = drupal_get_path_alias($path, isset($options['language']) ? $options['language']->language : '');
webmaster@1	1331 }
webmaster@1	1332
webmaster@1	1333 if (function_exists('custom_url_rewrite_outbound')) {
webmaster@1	1334 // Modules may alter outbound links by reference.
webmaster@1	1335 custom_url_rewrite_outbound($path, $options, $original_path);
webmaster@1	1336 }
webmaster@1	1337
webmaster@1	1338 $base = $options['absolute'] ? $options['base_url'] .'/' : base_path();
webmaster@1	1339 $prefix = empty($path) ? rtrim($options['prefix'], '/') : $options['prefix'];
webmaster@1	1340 $path = drupal_urlencode($prefix . $path);
webmaster@1	1341
webmaster@1	1342 if ($clean_url) {
webmaster@1	1343 // With Clean URLs.
webmaster@1	1344 if ($options['query']) {
webmaster@1	1345 return $base . $path .'?'. $options['query'] . $options['fragment'];
webmaster@1	1346 }
webmaster@1	1347 else {
webmaster@1	1348 return $base . $path . $options['fragment'];
webmaster@1	1349 }
webmaster@1	1350 }
webmaster@1	1351 else {
webmaster@1	1352 // Without Clean URLs.
webmaster@1	1353 $variables = array();
webmaster@1	1354 if (!empty($path)) {
webmaster@1	1355 $variables[] = 'q='. $path;
webmaster@1	1356 }
webmaster@1	1357 if (!empty($options['query'])) {
webmaster@1	1358 $variables[] = $options['query'];
webmaster@1	1359 }
webmaster@1	1360 if ($query = join('&', $variables)) {
webmaster@1	1361 return $base . $script .'?'. $query . $options['fragment'];
webmaster@1	1362 }
webmaster@1	1363 else {
webmaster@1	1364 return $base . $options['fragment'];
webmaster@1	1365 }
webmaster@1	1366 }
webmaster@1	1367 }
webmaster@1	1368
webmaster@1	1369 /**
webmaster@1	1370 * Format an attribute string to insert in a tag.
webmaster@1	1371 *
webmaster@1	1372 * @param $attributes
webmaster@1	1373 * An associative array of HTML attributes.
webmaster@1	1374 * @return
webmaster@1	1375 * An HTML string ready for insertion in a tag.
webmaster@1	1376 */
webmaster@1	1377 function drupal_attributes($attributes = array()) {
webmaster@1	1378 if (is_array($attributes)) {
webmaster@1	1379 $t = '';
webmaster@1	1380 foreach ($attributes as $key => $value) {
webmaster@1	1381 $t .= " $key=".'"'. check_plain($value) .'"';
webmaster@1	1382 }
webmaster@1	1383 return $t;
webmaster@1	1384 }
webmaster@1	1385 }
webmaster@1	1386
webmaster@1	1387 /**
webmaster@1	1388 * Format an internal Drupal link.
webmaster@1	1389 *
webmaster@1	1390 * This function correctly handles aliased paths, and allows themes to highlight
webmaster@1	1391 * links to the current page correctly, so all internal links output by modules
webmaster@1	1392 * should be generated by this function if possible.
webmaster@1	1393 *
webmaster@1	1394 * @param $text
webmaster@1	1395 * The text to be enclosed with the anchor tag.
webmaster@1	1396 * @param $path
webmaster@1	1397 * The Drupal path being linked to, such as "admin/content/node". Can be an
webmaster@1	1398 * external or internal URL.
webmaster@1	1399 * - If you provide the full URL, it will be considered an external URL.
webmaster@1	1400 * - If you provide only the path (e.g. "admin/content/node"), it is
webmaster@1	1401 * considered an internal link. In this case, it must be a system URL
webmaster@1	1402 * as the url() function will generate the alias.
webmaster@1	1403 * - If you provide '<front>', it generates a link to the site's
webmaster@1	1404 * base URL (again via the url() function).
webmaster@1	1405 * - If you provide a path, and 'alias' is set to TRUE (see below), it is
webmaster@1	1406 * used as is.
webmaster@1	1407 * @param $options
webmaster@1	1408 * An associative array of additional options, with the following keys:
webmaster@1	1409 * 'attributes'
webmaster@1	1410 * An associative array of HTML attributes to apply to the anchor tag.
webmaster@1	1411 * 'query'
webmaster@1	1412 * A query string to append to the link, or an array of query key/value
webmaster@1	1413 * properties.
webmaster@1	1414 * 'fragment'
webmaster@1	1415 * A fragment identifier (named anchor) to append to the link.
webmaster@1	1416 * Do not include the '#' character.
webmaster@1	1417 * 'absolute' (default FALSE)
webmaster@1	1418 * Whether to force the output to be an absolute link (beginning with
webmaster@1	1419 * http:). Useful for links that will be displayed outside the site, such
webmaster@1	1420 * as in an RSS feed.
webmaster@1	1421 * 'html' (default FALSE)
webmaster@1	1422 * Whether the title is HTML, or just plain-text. For example for making
webmaster@1	1423 * an image a link, this must be set to TRUE, or else you will see the
webmaster@1	1424 * escaped HTML.
webmaster@1	1425 * 'alias' (default FALSE)
webmaster@1	1426 * Whether the given path is an alias already.
webmaster@1	1427 * @return
webmaster@1	1428 * an HTML string containing a link to the given path.
webmaster@1	1429 */
webmaster@1	1430 function l($text, $path, $options = array()) {
webmaster@1	1431 // Merge in defaults.
webmaster@1	1432 $options += array(
webmaster@1	1433 'attributes' => array(),
webmaster@1	1434 'html' => FALSE,
webmaster@1	1435 );
webmaster@1	1436
webmaster@1	1437 // Append active class.
webmaster@1	1438 if ($path == $_GET['q'] \|\| ($path == '<front>' && drupal_is_front_page())) {
webmaster@1	1439 if (isset($options['attributes']['class'])) {
webmaster@1	1440 $options['attributes']['class'] .= ' active';
webmaster@1	1441 }
webmaster@1	1442 else {
webmaster@1	1443 $options['attributes']['class'] = 'active';
webmaster@1	1444 }
webmaster@1	1445 }
webmaster@1	1446
webmaster@1	1447 // Remove all HTML and PHP tags from a tooltip. For best performance, we act only
webmaster@1	1448 // if a quick strpos() pre-check gave a suspicion (because strip_tags() is expensive).
webmaster@1	1449 if (isset($options['attributes']['title']) && strpos($options['attributes']['title'], '<') !== FALSE) {
webmaster@1	1450 $options['attributes']['title'] = strip_tags($options['attributes']['title']);
webmaster@1	1451 }
webmaster@1	1452
webmaster@1	1453 return '<a href="'. check_url(url($path, $options)) .'"'. drupal_attributes($options['attributes']) .'>'. ($options['html'] ? $text : check_plain($text)) .'</a>';
webmaster@1	1454 }
webmaster@1	1455
webmaster@1	1456 /**
webmaster@1	1457 * Perform end-of-request tasks.
webmaster@1	1458 *
webmaster@1	1459 * This function sets the page cache if appropriate, and allows modules to
webmaster@1	1460 * react to the closing of the page by calling hook_exit().
webmaster@1	1461 */
webmaster@1	1462 function drupal_page_footer() {
webmaster@1	1463 if (variable_get('cache', CACHE_DISABLED) != CACHE_DISABLED) {
webmaster@1	1464 page_set_cache();
webmaster@1	1465 }
webmaster@1	1466
webmaster@1	1467 module_invoke_all('exit');
webmaster@1	1468 }
webmaster@1	1469
webmaster@1	1470 /**
webmaster@1	1471 * Form an associative array from a linear array.
webmaster@1	1472 *
webmaster@1	1473 * This function walks through the provided array and constructs an associative
webmaster@1	1474 * array out of it. The keys of the resulting array will be the values of the
webmaster@1	1475 * input array. The values will be the same as the keys unless a function is
webmaster@1	1476 * specified, in which case the output of the function is used for the values
webmaster@1	1477 * instead.
webmaster@1	1478 *
webmaster@1	1479 * @param $array
webmaster@1	1480 * A linear array.
webmaster@1	1481 * @param $function
webmaster@1	1482 * A name of a function to apply to all values before output.
webmaster@1	1483 * @result
webmaster@1	1484 * An associative array.
webmaster@1	1485 */
webmaster@1	1486 function drupal_map_assoc($array, $function = NULL) {
webmaster@1	1487 if (!isset($function)) {
webmaster@1	1488 $result = array();
webmaster@1	1489 foreach ($array as $value) {
webmaster@1	1490 $result[$value] = $value;
webmaster@1	1491 }
webmaster@1	1492 return $result;
webmaster@1	1493 }
webmaster@1	1494 elseif (function_exists($function)) {
webmaster@1	1495 $result = array();
webmaster@1	1496 foreach ($array as $value) {
webmaster@1	1497 $result[$value] = $function($value);
webmaster@1	1498 }
webmaster@1	1499 return $result;
webmaster@1	1500 }
webmaster@1	1501 }
webmaster@1	1502
webmaster@1	1503 /**
webmaster@1	1504 * Evaluate a string of PHP code.
webmaster@1	1505 *
webmaster@1	1506 * This is a wrapper around PHP's eval(). It uses output buffering to capture both
webmaster@1	1507 * returned and printed text. Unlike eval(), we require code to be surrounded by
webmaster@1	1508 * <?php ?> tags; in other words, we evaluate the code as if it were a stand-alone
webmaster@1	1509 * PHP file.
webmaster@1	1510 *
webmaster@1	1511 * Using this wrapper also ensures that the PHP code which is evaluated can not
webmaster@1	1512 * overwrite any variables in the calling code, unlike a regular eval() call.
webmaster@1	1513 *
webmaster@1	1514 * @param $code
webmaster@1	1515 * The code to evaluate.
webmaster@1	1516 * @return
webmaster@1	1517 * A string containing the printed output of the code, followed by the returned
webmaster@1	1518 * output of the code.
webmaster@1	1519 */
webmaster@1	1520 function drupal_eval($code) {
webmaster@1	1521 global $theme_path, $theme_info, $conf;
webmaster@1	1522
webmaster@1	1523 // Store current theme path.
webmaster@1	1524 $old_theme_path = $theme_path;
webmaster@1	1525
webmaster@1	1526 // Restore theme_path to the theme, as long as drupal_eval() executes,
webmaster@1	1527 // so code evaluted will not see the caller module as the current theme.
webmaster@1	1528 // If theme info is not initialized get the path from theme_default.
webmaster@1	1529 if (!isset($theme_info)) {
webmaster@1	1530 $theme_path = drupal_get_path('theme', $conf['theme_default']);
webmaster@1	1531 }
webmaster@1	1532 else {
webmaster@1	1533 $theme_path = dirname($theme_info->filename);
webmaster@1	1534 }
webmaster@1	1535
webmaster@1	1536 ob_start();
webmaster@1	1537 print eval('?>'. $code);
webmaster@1	1538 $output = ob_get_contents();
webmaster@1	1539 ob_end_clean();
webmaster@1	1540
webmaster@1	1541 // Recover original theme path.
webmaster@1	1542 $theme_path = $old_theme_path;
webmaster@1	1543
webmaster@1	1544 return $output;
webmaster@1	1545 }
webmaster@1	1546
webmaster@1	1547 /**
webmaster@1	1548 * Returns the path to a system item (module, theme, etc.).
webmaster@1	1549 *
webmaster@1	1550 * @param $type
webmaster@1	1551 * The type of the item (i.e. theme, theme_engine, module).
webmaster@1	1552 * @param $name
webmaster@1	1553 * The name of the item for which the path is requested.
webmaster@1	1554 *
webmaster@1	1555 * @return
webmaster@1	1556 * The path to the requested item.
webmaster@1	1557 */
webmaster@1	1558 function drupal_get_path($type, $name) {
webmaster@1	1559 return dirname(drupal_get_filename($type, $name));
webmaster@1	1560 }
webmaster@1	1561
webmaster@1	1562 /**
webmaster@1	1563 * Returns the base URL path of the Drupal installation.
webmaster@1	1564 * At the very least, this will always default to /.
webmaster@1	1565 */
webmaster@1	1566 function base_path() {
webmaster@1	1567 return $GLOBALS['base_path'];
webmaster@1	1568 }
webmaster@1	1569
webmaster@1	1570 /**
webmaster@1	1571 * Provide a substitute clone() function for PHP4.
webmaster@1	1572 */
webmaster@1	1573 function drupal_clone($object) {
webmaster@1	1574 return version_compare(phpversion(), '5.0') < 0 ? $object : clone($object);
webmaster@1	1575 }
webmaster@1	1576
webmaster@1	1577 /**
webmaster@1	1578 * Add a <link> tag to the page's HEAD.
webmaster@1	1579 */
webmaster@1	1580 function drupal_add_link($attributes) {
webmaster@1	1581 drupal_set_html_head('<link'. drupal_attributes($attributes) ." />\n");
webmaster@1	1582 }
webmaster@1	1583
webmaster@1	1584 /**
webmaster@1	1585 * Adds a CSS file to the stylesheet queue.
webmaster@1	1586 *
webmaster@1	1587 * Themes may replace module-defined CSS files by adding a stylesheet with the
webmaster@1	1588 * same filename. For example, themes/garland/system-menus.css would replace
webmaster@1	1589 * modules/system/system-menus.css. This allows themes to override complete
webmaster@1	1590 * CSS files, rather than specific selectors, when necessary.
webmaster@1	1591 *
webmaster@1	1592 * @param $path
webmaster@1	1593 * (optional) The path to the CSS file relative to the base_path(), e.g.,
webmaster@1	1594 * /modules/devel/devel.css.
webmaster@1	1595 *
webmaster@1	1596 * Modules should always prefix the names of their CSS files with the module
webmaster@1	1597 * name, for example: system-menus.css rather than simply menus.css. Themes
webmaster@1	1598 * can override module-supplied CSS files based on their filenames, and this
webmaster@1	1599 * prefixing helps prevent confusing name collisions for theme developers.
webmaster@1	1600 *
webmaster@1	1601 * If the direction of the current language is right-to-left (Hebrew,
webmaster@1	1602 * Arabic, etc.), the function will also look for an RTL CSS file and append
webmaster@1	1603 * it to the list. The name of this file should have an '-rtl.css' suffix.
webmaster@1	1604 * For example a CSS file called 'name.css' will have a 'name-rtl.css'
webmaster@1	1605 * file added to the list, if exists in the same directory. This CSS file
webmaster@1	1606 * should contain overrides for properties which should be reversed or
webmaster@1	1607 * otherwise different in a right-to-left display.
webmaster@1	1608 *
webmaster@1	1609 * If the original CSS file is being overridden by a theme, the theme is
webmaster@1	1610 * responsible for supplying an accompanying RTL CSS file to replace the
webmaster@1	1611 * module's.
webmaster@1	1612 * @param $type
webmaster@1	1613 * (optional) The type of stylesheet that is being added. Types are: module
webmaster@1	1614 * or theme.
webmaster@1	1615 * @param $media
webmaster@1	1616 * (optional) The media type for the stylesheet, e.g., all, print, screen.
webmaster@1	1617 * @param $preprocess
webmaster@1	1618 * (optional) Should this CSS file be aggregated and compressed if this
webmaster@1	1619 * feature has been turned on under the performance section?
webmaster@1	1620 *
webmaster@1	1621 * What does this actually mean?
webmaster@1	1622 * CSS preprocessing is the process of aggregating a bunch of separate CSS
webmaster@1	1623 * files into one file that is then compressed by removing all extraneous
webmaster@1	1624 * white space.
webmaster@1	1625 *
webmaster@1	1626 * The reason for merging the CSS files is outlined quite thoroughly here:
webmaster@1	1627 * http://www.die.net/musings/page_load_time/
webmaster@1	1628 * "Load fewer external objects. Due to request overhead, one bigger file
webmaster@1	1629 * just loads faster than two smaller ones half its size."
webmaster@1	1630 *
webmaster@1	1631 * However, you should not preprocess every file as this can lead to
webmaster@1	1632 * redundant caches. You should set $preprocess = FALSE when:
webmaster@1	1633 *
webmaster@1	1634 * - Your styles are only used rarely on the site. This could be a special
webmaster@1	1635 * admin page, the homepage, or a handful of pages that does not represent
webmaster@1	1636 * the majority of the pages on your site.
webmaster@1	1637 *
webmaster@1	1638 * Typical candidates for caching are for example styles for nodes across
webmaster@1	1639 * the site, or used in the theme.
webmaster@1	1640 * @return
webmaster@1	1641 * An array of CSS files.
webmaster@1	1642 */
webmaster@1	1643 function drupal_add_css($path = NULL, $type = 'module', $media = 'all', $preprocess = TRUE) {
webmaster@1	1644 static $css = array();
webmaster@1	1645 global $language;
webmaster@1	1646
webmaster@1	1647 // Create an array of CSS files for each media type first, since each type needs to be served
webmaster@1	1648 // to the browser differently.
webmaster@1	1649 if (isset($path)) {
webmaster@1	1650 // This check is necessary to ensure proper cascading of styles and is faster than an asort().
webmaster@1	1651 if (!isset($css[$media])) {
webmaster@1	1652 $css[$media] = array('module' => array(), 'theme' => array());
webmaster@1	1653 }
webmaster@1	1654
webmaster@1	1655 // If a theme is adding the current stylesheet, check for any existing CSS files
webmaster@1	1656 // with the same name. If they exist, remove them and allow the theme's own CSS
webmaster@1	1657 // file to replace it.
webmaster@1	1658 if ($type == 'theme') {
webmaster@1	1659 foreach ($css[$media]['module'] as $old_path => $old_preprocess) {
webmaster@1	1660 // Match by style sheet name.
webmaster@1	1661 if (basename($path) == basename($old_path)) {
webmaster@1	1662 unset($css[$media]['module'][$old_path]);
webmaster@1	1663
webmaster@1	1664 // If the current language is RTL and the CSS file had an RTL variant,
webmaster@1	1665 // pull out the original. The theme must provide its own RTL style.
webmaster@1	1666 if (defined('LANGUAGE_RTL') && $language->direction == LANGUAGE_RTL) {
webmaster@1	1667 $rtl_old_path = str_replace('.css', '-rtl.css', $old_path);
webmaster@1	1668 if (isset($css[$media]['module'][$rtl_old_path])) {
webmaster@1	1669 unset($css[$media]['module'][$rtl_old_path]);
webmaster@1	1670 }
webmaster@1	1671 }
webmaster@1	1672 // Set the preprocess state of the current module, then exit the search loop.
webmaster@1	1673 $preprocess = $old_preprocess;
webmaster@1	1674 break;
webmaster@1	1675 }
webmaster@1	1676 }
webmaster@1	1677 }
webmaster@1	1678 $css[$media][$type][$path] = $preprocess;
webmaster@1	1679
webmaster@1	1680 // If the current language is RTL, add the CSS file with RTL overrides.
webmaster@1	1681 if (defined('LANGUAGE_RTL') && $language->direction == LANGUAGE_RTL) {
webmaster@1	1682 $rtl_path = str_replace('.css', '-rtl.css', $path);
webmaster@1	1683 if (file_exists($rtl_path)) {
webmaster@1	1684 $css[$media][$type][$rtl_path] = $preprocess;
webmaster@1	1685 }
webmaster@1	1686 }
webmaster@1	1687 }
webmaster@1	1688
webmaster@1	1689 return $css;
webmaster@1	1690 }
webmaster@1	1691
webmaster@1	1692 /**
webmaster@1	1693 * Returns a themed representation of all stylesheets that should be attached to the page.
webmaster@1	1694 *
webmaster@1	1695 * It loads the CSS in order, with 'core' CSS first, then 'module' CSS, then
webmaster@1	1696 * 'theme' CSS files. This ensures proper cascading of styles for easy
webmaster@1	1697 * overriding in modules and themes.
webmaster@1	1698 *
webmaster@1	1699 * @param $css
webmaster@1	1700 * (optional) An array of CSS files. If no array is provided, the default
webmaster@1	1701 * stylesheets array is used instead.
webmaster@1	1702 * @return
webmaster@1	1703 * A string of XHTML CSS tags.
webmaster@1	1704 */
webmaster@1	1705 function drupal_get_css($css = NULL) {
webmaster@1	1706 $output = '';
webmaster@1	1707 if (!isset($css)) {
webmaster@1	1708 $css = drupal_add_css();
webmaster@1	1709 }
webmaster@1	1710 $no_module_preprocess = '';
webmaster@1	1711 $no_theme_preprocess = '';
webmaster@1	1712
webmaster@1	1713 $preprocess_css = (variable_get('preprocess_css', FALSE) && (!defined('MAINTENANCE_MODE') \|\| MAINTENANCE_MODE != 'update'));
webmaster@1	1714 $directory = file_directory_path();
webmaster@1	1715 $is_writable = is_dir($directory) && is_writable($directory) && (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC);
webmaster@1	1716
webmaster@1	1717 // A dummy query-string is added to filenames, to gain control over
webmaster@1	1718 // browser-caching. The string changes on every update or full cache
webmaster@1	1719 // flush, forcing browsers to load a new copy of the files, as the
webmaster@1	1720 // URL changed.
webmaster@1	1721 $query_string = '?'. substr(variable_get('css_js_query_string', '0'), 0, 1);
webmaster@1	1722
webmaster@1	1723 foreach ($css as $media => $types) {
webmaster@1	1724 // If CSS preprocessing is off, we still need to output the styles.
webmaster@1	1725 // Additionally, go through any remaining styles if CSS preprocessing is on and output the non-cached ones.
webmaster@1	1726 foreach ($types as $type => $files) {
webmaster@1	1727 foreach ($types[$type] as $file => $preprocess) {
webmaster@1	1728 if (!$preprocess \|\| !($is_writable && $preprocess_css)) {
webmaster@1	1729 // If a CSS file is not to be preprocessed and it's a module CSS file, it needs to always appear at the top,
webmaster@1	1730 // regardless of whether preprocessing is on or off.
webmaster@1	1731 if (!$preprocess && $type == 'module') {
webmaster@1	1732 $no_module_preprocess .= '<link type="text/css" rel="stylesheet" media="'. $media .'" href="'. base_path() . $file . $query_string .'" />'."\n";
webmaster@1	1733 }
webmaster@1	1734 // If a CSS file is not to be preprocessed and it's a theme CSS file, it needs to always appear at the bottom,
webmaster@1	1735 // regardless of whether preprocessing is on or off.
webmaster@1	1736 else if (!$preprocess && $type == 'theme') {
webmaster@1	1737 $no_theme_preprocess .= '<link type="text/css" rel="stylesheet" media="'. $media .'" href="'. base_path() . $file . $query_string .'" />'."\n";
webmaster@1	1738 }
webmaster@1	1739 else {
webmaster@1	1740 $output .= '<link type="text/css" rel="stylesheet" media="'. $media .'" href="'. base_path() . $file . $query_string .'" />'."\n";
webmaster@1	1741 }
webmaster@1	1742 }
webmaster@1	1743 }
webmaster@1	1744 }
webmaster@1	1745
webmaster@1	1746 if ($is_writable && $preprocess_css) {
webmaster@1	1747 $filename = md5(serialize($types) . $query_string) .'.css';
webmaster@1	1748 $preprocess_file = drupal_build_css_cache($types, $filename);
webmaster@1	1749 $output .= '<link type="text/css" rel="stylesheet" media="'. $media .'" href="'. base_path() . $preprocess_file .'" />'."\n";
webmaster@1	1750 }
webmaster@1	1751 }
webmaster@1	1752
webmaster@1	1753 return $no_module_preprocess . $output . $no_theme_preprocess;
webmaster@1	1754 }
webmaster@1	1755
webmaster@1	1756 /**
webmaster@1	1757 * Aggregate and optimize CSS files, putting them in the files directory.
webmaster@1	1758 *
webmaster@1	1759 * @param $types
webmaster@1	1760 * An array of types of CSS files (e.g., screen, print) to aggregate and
webmaster@1	1761 * compress into one file.
webmaster@1	1762 * @param $filename
webmaster@1	1763 * The name of the aggregate CSS file.
webmaster@1	1764 * @return
webmaster@1	1765 * The name of the CSS file.
webmaster@1	1766 */
webmaster@1	1767 function drupal_build_css_cache($types, $filename) {
webmaster@1	1768 $data = '';
webmaster@1	1769
webmaster@1	1770 // Create the css/ within the files folder.
webmaster@1	1771 $csspath = file_create_path('css');
webmaster@1	1772 file_check_directory($csspath, FILE_CREATE_DIRECTORY);
webmaster@1	1773
webmaster@1	1774 if (!file_exists($csspath .'/'. $filename)) {
webmaster@1	1775 // Build aggregate CSS file.
webmaster@1	1776 foreach ($types as $type) {
webmaster@1	1777 foreach ($type as $file => $cache) {
webmaster@1	1778 if ($cache) {
webmaster@1	1779 $contents = drupal_load_stylesheet($file, TRUE);
webmaster@1	1780 // Return the path to where this CSS file originated from.
webmaster@1	1781 $base = base_path() . dirname($file) .'/';
webmaster@1	1782 _drupal_build_css_path(NULL, $base);
webmaster@1	1783 // Prefix all paths within this CSS file, ignoring external and absolute paths.
webmaster@1	1784 $data .= preg_replace_callback('/url$[\'"]?(?![a-z]+:\|\/+)([^\'")]+)[\'"]?$/i', '_drupal_build_css_path', $contents);
webmaster@1	1785 }
webmaster@1	1786 }
webmaster@1	1787 }
webmaster@1	1788
webmaster@1	1789 // Per the W3C specification at http://www.w3.org/TR/REC-CSS2/cascade.html#at-import,
webmaster@1	1790 // @import rules must proceed any other style, so we move those to the top.
webmaster@1	1791 $regexp = '/@import[^;]+;/i';
webmaster@1	1792 preg_match_all($regexp, $data, $matches);
webmaster@1	1793 $data = preg_replace($regexp, '', $data);
webmaster@1	1794 $data = implode('', $matches[0]) . $data;
webmaster@1	1795
webmaster@1	1796 // Create the CSS file.
webmaster@1	1797 file_save_data($data, $csspath .'/'. $filename, FILE_EXISTS_REPLACE);
webmaster@1	1798 }
webmaster@1	1799 return $csspath .'/'. $filename;
webmaster@1	1800 }
webmaster@1	1801
webmaster@1	1802 /**
webmaster@1	1803 * Helper function for drupal_build_css_cache().
webmaster@1	1804 *
webmaster@1	1805 * This function will prefix all paths within a CSS file.
webmaster@1	1806 */
webmaster@1	1807 function _drupal_build_css_path($matches, $base = NULL) {
webmaster@1	1808 static $_base;
webmaster@1	1809 // Store base path for preg_replace_callback.
webmaster@1	1810 if (isset($base)) {
webmaster@1	1811 $_base = $base;
webmaster@1	1812 }
webmaster@1	1813
webmaster@1	1814 // Prefix with base and remove '../' segments where possible.
webmaster@1	1815 $path = $_base . $matches[1];
webmaster@1	1816 $last = '';
webmaster@1	1817 while ($path != $last) {
webmaster@1	1818 $last = $path;
webmaster@1	1819 $path = preg_replace('`(^\|/)(?!../)([^/]+)/../`', '$1', $path);
webmaster@1	1820 }
webmaster@1	1821 return 'url('. $path .')';
webmaster@1	1822 }
webmaster@1	1823
webmaster@1	1824 /**
webmaster@1	1825 * Loads the stylesheet and resolves all @import commands.
webmaster@1	1826 *
webmaster@1	1827 * Loads a stylesheet and replaces @import commands with the contents of the
webmaster@1	1828 * imported file. Use this instead of file_get_contents when processing
webmaster@1	1829 * stylesheets.
webmaster@1	1830 *
webmaster@1	1831 * The returned contents are compressed removing white space and comments only
webmaster@1	1832 * when CSS aggregation is enabled. This optimization will not apply for
webmaster@1	1833 * color.module enabled themes with CSS aggregation turned off.
webmaster@1	1834 *
webmaster@1	1835 * @param $file
webmaster@1	1836 * Name of the stylesheet to be processed.
webmaster@1	1837 * @param $optimize
webmaster@1	1838 * Defines if CSS contents should be compressed or not.
webmaster@1	1839 * @return
webmaster@1	1840 * Contents of the stylesheet including the imported stylesheets.
webmaster@1	1841 */
webmaster@1	1842 function drupal_load_stylesheet($file, $optimize = NULL) {
webmaster@1	1843 static $_optimize;
webmaster@1	1844 // Store optimization parameter for preg_replace_callback with nested @import loops.
webmaster@1	1845 if (isset($optimize)) {
webmaster@1	1846 $_optimize = $optimize;
webmaster@1	1847 }
webmaster@1	1848
webmaster@1	1849 $contents = '';
webmaster@1	1850 if (file_exists($file)) {
webmaster@1	1851 // Load the local CSS stylesheet.
webmaster@1	1852 $contents = file_get_contents($file);
webmaster@1	1853
webmaster@1	1854 // Change to the current stylesheet's directory.
webmaster@1	1855 $cwd = getcwd();
webmaster@1	1856 chdir(dirname($file));
webmaster@1	1857
webmaster@1	1858 // Replaces @import commands with the actual stylesheet content.
webmaster@1	1859 // This happens recursively but omits external files.
webmaster@1	1860 $contents = preg_replace_callback('/@import\s*(?:url$)?[\'"]?(?![a-z]+:)([^\'"\()]+)[\'"]?$?;/', '_drupal_load_stylesheet', $contents);
webmaster@1	1861 // Remove multiple charset declarations for standards compliance (and fixing Safari problems).
webmaster@1	1862 $contents = preg_replace('/^@charset\s+[\'"](\S*)\b[\'"];/i', '', $contents);
webmaster@1	1863
webmaster@1	1864 if ($_optimize) {
webmaster@1	1865 // Perform some safe CSS optimizations.
webmaster@1	1866 $contents = preg_replace('<
webmaster@1	1867 \s([@{}:;,]\|\)\s\|\s\()\s \| # Remove whitespace around separators, but keep space around parentheses.
webmaster@1	1868 /\([^\\\\]\|\(?!/))+\/ \| # Remove comments that are not CSS hacks.
webmaster@1	1869 [\n\r] # Remove line breaks.
webmaster@1	1870 >x', '\1', $contents);
webmaster@1	1871 }
webmaster@1	1872
webmaster@1	1873 // Change back directory.
webmaster@1	1874 chdir($cwd);
webmaster@1	1875 }
webmaster@1	1876
webmaster@1	1877 return $contents;
webmaster@1	1878 }
webmaster@1	1879
webmaster@1	1880 /**
webmaster@1	1881 * Loads stylesheets recursively and returns contents with corrected paths.
webmaster@1	1882 *
webmaster@1	1883 * This function is used for recursive loading of stylesheets and
webmaster@1	1884 * returns the stylesheet content with all url() paths corrected.
webmaster@1	1885 */
webmaster@1	1886 function _drupal_load_stylesheet($matches) {
webmaster@1	1887 $filename = $matches[1];
webmaster@1	1888 // Load the imported stylesheet and replace @import commands in there as well.
webmaster@1	1889 $file = drupal_load_stylesheet($filename);
webmaster@1	1890 // Alter all url() paths, but not external.
webmaster@1	1891 return preg_replace('/url$([\'"]?)(?![a-z]+:)([^\'")]+)[\'"]?$?;/i', 'url(\1'. dirname($filename) .'/', $file);
webmaster@1	1892 }
webmaster@1	1893
webmaster@1	1894 /**
webmaster@1	1895 * Delete all cached CSS files.
webmaster@1	1896 */
webmaster@1	1897 function drupal_clear_css_cache() {
webmaster@1	1898 file_scan_directory(file_create_path('css'), '.*', array('.', '..', 'CVS'), 'file_delete', TRUE);
webmaster@1	1899 }
webmaster@1	1900
webmaster@1	1901 /**
webmaster@1	1902 * Add a JavaScript file, setting or inline code to the page.
webmaster@1	1903 *
webmaster@1	1904 * The behavior of this function depends on the parameters it is called with.
webmaster@1	1905 * Generally, it handles the addition of JavaScript to the page, either as
webmaster@1	1906 * reference to an existing file or as inline code. The following actions can be
webmaster@1	1907 * performed using this function:
webmaster@1	1908 *
webmaster@1	1909 * - Add a file ('core', 'module' and 'theme'):
webmaster@1	1910 * Adds a reference to a JavaScript file to the page. JavaScript files
webmaster@1	1911 * are placed in a certain order, from 'core' first, to 'module' and finally
webmaster@1	1912 * 'theme' so that files, that are added later, can override previously added
webmaster@1	1913 * files with ease.
webmaster@1	1914 *
webmaster@1	1915 * - Add inline JavaScript code ('inline'):
webmaster@1	1916 * Executes a piece of JavaScript code on the current page by placing the code
webmaster@1	1917 * directly in the page. This can, for example, be useful to tell the user that
webmaster@1	1918 * a new message arrived, by opening a pop up, alert box etc.
webmaster@1	1919 *
webmaster@1	1920 * - Add settings ('setting'):
webmaster@1	1921 * Adds a setting to Drupal's global storage of JavaScript settings. Per-page
webmaster@1	1922 * settings are required by some modules to function properly. The settings
webmaster@1	1923 * will be accessible at Drupal.settings.
webmaster@1	1924 *
webmaster@1	1925 * @param $data
webmaster@1	1926 * (optional) If given, the value depends on the $type parameter:
webmaster@1	1927 * - 'core', 'module' or 'theme': Path to the file relative to base_path().
webmaster@1	1928 * - 'inline': The JavaScript code that should be placed in the given scope.
webmaster@1	1929 * - 'setting': An array with configuration options as associative array. The
webmaster@1	1930 * array is directly placed in Drupal.settings. You might want to wrap your
webmaster@1	1931 * actual configuration settings in another variable to prevent the pollution
webmaster@1	1932 * of the Drupal.settings namespace.
webmaster@1	1933 * @param $type
webmaster@1	1934 * (optional) The type of JavaScript that should be added to the page. Allowed
webmaster@1	1935 * values are 'core', 'module', 'theme', 'inline' and 'setting'. You
webmaster@1	1936 * can, however, specify any value. It is treated as a reference to a JavaScript
webmaster@1	1937 * file. Defaults to 'module'.
webmaster@1	1938 * @param $scope
webmaster@1	1939 * (optional) The location in which you want to place the script. Possible
webmaster@1	1940 * values are 'header' and 'footer' by default. If your theme implements
webmaster@1	1941 * different locations, however, you can also use these.
webmaster@1	1942 * @param $defer
webmaster@1	1943 * (optional) If set to TRUE, the defer attribute is set on the <script> tag.
webmaster@1	1944 * Defaults to FALSE. This parameter is not used with $type == 'setting'.
webmaster@1	1945 * @param $cache
webmaster@1	1946 * (optional) If set to FALSE, the JavaScript file is loaded anew on every page
webmaster@1	1947 * call, that means, it is not cached. Defaults to TRUE. Used only when $type
webmaster@1	1948 * references a JavaScript file.
webmaster@1	1949 * @param $preprocess
webmaster@1	1950 * (optional) Should this JS file be aggregated if this
webmaster@1	1951 * feature has been turned on under the performance section?
webmaster@1	1952 * @return
webmaster@1	1953 * If the first parameter is NULL, the JavaScript array that has been built so
webmaster@1	1954 * far for $scope is returned. If the first three parameters are NULL,
webmaster@1	1955 * an array with all scopes is returned.
webmaster@1	1956 */
webmaster@1	1957 function drupal_add_js($data = NULL, $type = 'module', $scope = 'header', $defer = FALSE, $cache = TRUE, $preprocess = TRUE) {
webmaster@1	1958 static $javascript = array();
webmaster@1	1959
webmaster@1	1960 if (isset($data)) {
webmaster@1	1961
webmaster@1	1962 // Add jquery.js and drupal.js, as well as the basePath setting, the
webmaster@1	1963 // first time a Javascript file is added.
webmaster@1	1964 if (empty($javascript)) {
webmaster@1	1965 $javascript['header'] = array(
webmaster@1	1966 'core' => array(
webmaster@1	1967 'misc/jquery.js' => array('cache' => TRUE, 'defer' => FALSE, 'preprocess' => TRUE),
webmaster@1	1968 'misc/drupal.js' => array('cache' => TRUE, 'defer' => FALSE, 'preprocess' => TRUE),
webmaster@1	1969 ),
webmaster@1	1970 'module' => array(),
webmaster@1	1971 'theme' => array(),
webmaster@1	1972 'setting' => array(
webmaster@1	1973 array('basePath' => base_path()),
webmaster@1	1974 ),
webmaster@1	1975 'inline' => array(),
webmaster@1	1976 );
webmaster@1	1977 }
webmaster@1	1978
webmaster@1	1979 if (isset($scope) && !isset($javascript[$scope])) {
webmaster@1	1980 $javascript[$scope] = array('core' => array(), 'module' => array(), 'theme' => array(), 'setting' => array(), 'inline' => array());
webmaster@1	1981 }
webmaster@1	1982
webmaster@1	1983 if (isset($type) && isset($scope) && !isset($javascript[$scope][$type])) {
webmaster@1	1984 $javascript[$scope][$type] = array();
webmaster@1	1985 }
webmaster@1	1986
webmaster@1	1987 switch ($type) {
webmaster@1	1988 case 'setting':
webmaster@1	1989 $javascript[$scope][$type][] = $data;
webmaster@1	1990 break;
webmaster@1	1991 case 'inline':
webmaster@1	1992 $javascript[$scope][$type][] = array('code' => $data, 'defer' => $defer);
webmaster@1	1993 break;
webmaster@1	1994 default:
webmaster@1	1995 // If cache is FALSE, don't preprocess the JS file.
webmaster@1	1996 $javascript[$scope][$type][$data] = array('cache' => $cache, 'defer' => $defer, 'preprocess' => (!$cache ? FALSE : $preprocess));
webmaster@1	1997 }
webmaster@1	1998 }
webmaster@1	1999
webmaster@1	2000 if (isset($scope)) {
webmaster@1	2001
webmaster@1	2002 if (isset($javascript[$scope])) {
webmaster@1	2003 return $javascript[$scope];
webmaster@1	2004 }
webmaster@1	2005 else {
webmaster@1	2006 return array();
webmaster@1	2007 }
webmaster@1	2008 }
webmaster@1	2009 else {
webmaster@1	2010 return $javascript;
webmaster@1	2011 }
webmaster@1	2012 }
webmaster@1	2013
webmaster@1	2014 /**
webmaster@1	2015 * Returns a themed presentation of all JavaScript code for the current page.
webmaster@1	2016 *
webmaster@1	2017 * References to JavaScript files are placed in a certain order: first, all
webmaster@1	2018 * 'core' files, then all 'module' and finally all 'theme' JavaScript files
webmaster@1	2019 * are added to the page. Then, all settings are output, followed by 'inline'
webmaster@1	2020 * JavaScript code. If running update.php, all preprocessing is disabled.
webmaster@1	2021 *
webmaster@1	2022 * @parameter $scope
webmaster@1	2023 * (optional) The scope for which the JavaScript rules should be returned.
webmaster@1	2024 * Defaults to 'header'.
webmaster@1	2025 * @parameter $javascript
webmaster@1	2026 * (optional) An array with all JavaScript code. Defaults to the default
webmaster@1	2027 * JavaScript array for the given scope.
webmaster@1	2028 * @return
webmaster@1	2029 * All JavaScript code segments and includes for the scope as HTML tags.
webmaster@1	2030 */
webmaster@1	2031 function drupal_get_js($scope = 'header', $javascript = NULL) {
webmaster@1	2032 if ((!defined('MAINTENANCE_MODE') \|\| MAINTENANCE_MODE != 'update') && function_exists('locale_update_js_files')) {
webmaster@1	2033 locale_update_js_files();
webmaster@1	2034 }
webmaster@1	2035
webmaster@1	2036 if (!isset($javascript)) {
webmaster@1	2037 $javascript = drupal_add_js(NULL, NULL, $scope);
webmaster@1	2038 }
webmaster@1	2039
webmaster@1	2040 if (empty($javascript)) {
webmaster@1	2041 return '';
webmaster@1	2042 }
webmaster@1	2043
webmaster@1	2044 $output = '';
webmaster@1	2045 $preprocessed = '';
webmaster@1	2046 $no_preprocess = array('core' => '', 'module' => '', 'theme' => '');
webmaster@1	2047 $files = array();
webmaster@1	2048 $preprocess_js = (variable_get('preprocess_js', FALSE) && (!defined('MAINTENANCE_MODE') \|\| MAINTENANCE_MODE != 'update'));
webmaster@1	2049 $directory = file_directory_path();
webmaster@1	2050 $is_writable = is_dir($directory) && is_writable($directory) && (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC);
webmaster@1	2051
webmaster@1	2052 // A dummy query-string is added to filenames, to gain control over
webmaster@1	2053 // browser-caching. The string changes on every update or full cache
webmaster@1	2054 // flush, forcing browsers to load a new copy of the files, as the
webmaster@1	2055 // URL changed. Files that should not be cached (see drupal_add_js())
webmaster@1	2056 // get time() as query-string instead, to enforce reload on every
webmaster@1	2057 // page request.
webmaster@1	2058 $query_string = '?'. substr(variable_get('css_js_query_string', '0'), 0, 1);
webmaster@1	2059
webmaster@1	2060 foreach ($javascript as $type => $data) {
webmaster@1	2061
webmaster@1	2062 if (!$data) continue;
webmaster@1	2063
webmaster@1	2064 switch ($type) {
webmaster@1	2065 case 'setting':
webmaster@1	2066 $output .= '<script type="text/javascript">jQuery.extend(Drupal.settings, '. drupal_to_js(call_user_func_array('array_merge_recursive', $data)) .");</script>\n";
webmaster@1	2067 break;
webmaster@1	2068 case 'inline':
webmaster@1	2069 foreach ($data as $info) {
webmaster@1	2070 $output .= '<script type="text/javascript"'. ($info['defer'] ? ' defer="defer"' : '') .'>'. $info['code'] ."</script>\n";
webmaster@1	2071 }
webmaster@1	2072 break;
webmaster@1	2073 default:
webmaster@1	2074 // If JS preprocessing is off, we still need to output the scripts.
webmaster@1	2075 // Additionally, go through any remaining scripts if JS preprocessing is on and output the non-cached ones.
webmaster@1	2076 foreach ($data as $path => $info) {
webmaster@1	2077 if (!$info['preprocess'] \|\| !$is_writable \|\| !$preprocess_js) {
webmaster@1	2078 $no_preprocess[$type] .= '<script type="text/javascript"'. ($info['defer'] ? ' defer="defer"' : '') .' src="'. base_path() . $path . ($info['cache'] ? $query_string : '?'. time()) ."\"></script>\n";
webmaster@1	2079 }
webmaster@1	2080 else {
webmaster@1	2081 $files[$path] = $info;
webmaster@1	2082 }
webmaster@1	2083 }
webmaster@1	2084 }
webmaster@1	2085 }
webmaster@1	2086
webmaster@1	2087 // Aggregate any remaining JS files that haven't already been output.
webmaster@1	2088 if ($is_writable && $preprocess_js && count($files) > 0) {
webmaster@1	2089 $filename = md5(serialize($files) . $query_string) .'.js';
webmaster@1	2090 $preprocess_file = drupal_build_js_cache($files, $filename);
webmaster@1	2091 $preprocessed .= '<script type="text/javascript" src="'. base_path() . $preprocess_file .'"></script>'."\n";
webmaster@1	2092 }
webmaster@1	2093
webmaster@1	2094 // Keep the order of JS files consistent as some are preprocessed and others are not.
webmaster@1	2095 // Make sure any inline or JS setting variables appear last after libraries have loaded.
webmaster@1	2096 $output = $preprocessed . implode('', $no_preprocess) . $output;
webmaster@1	2097
webmaster@1	2098 return $output;
webmaster@1	2099 }
webmaster@1	2100
webmaster@1	2101 /**
webmaster@1	2102 * Assist in adding the tableDrag JavaScript behavior to a themed table.
webmaster@1	2103 *
webmaster@1	2104 * Draggable tables should be used wherever an outline or list of sortable items
webmaster@1	2105 * needs to be arranged by an end-user. Draggable tables are very flexible and
webmaster@1	2106 * can manipulate the value of form elements placed within individual columns.
webmaster@1	2107 *
webmaster@1	2108 * To set up a table to use drag and drop in place of weight select-lists or
webmaster@1	2109 * in place of a form that contains parent relationships, the form must be
webmaster@1	2110 * themed into a table. The table must have an id attribute set. If using
webmaster@1	2111 * theme_table(), the id may be set as such:
webmaster@1	2112 * @code
webmaster@1	2113 * $output = theme('table', $header, $rows, array('id' => 'my-module-table'));
webmaster@1	2114 * return $output;
webmaster@1	2115 * @endcode
webmaster@1	2116 *
webmaster@1	2117 * In the theme function for the form, a special class must be added to each
webmaster@1	2118 * form element within the same column, "grouping" them together.
webmaster@1	2119 *
webmaster@1	2120 * In a situation where a single weight column is being sorted in the table, the
webmaster@1	2121 * classes could be added like this (in the theme function):
webmaster@1	2122 * @code
webmaster@1	2123 * $form['my_elements'][$delta]['weight']['#attributes']['class'] = "my-elements-weight";
webmaster@1	2124 * @endcode
webmaster@1	2125 *
webmaster@1	2126 * Each row of the table must also have a class of "draggable" in order to enable the
webmaster@1	2127 * drag handles:
webmaster@1	2128 * @code
webmaster@1	2129 * $row = array(...);
webmaster@1	2130 * $rows[] = array(
webmaster@1	2131 * 'data' => $row,
webmaster@1	2132 * 'class' => 'draggable',
webmaster@1	2133 * );
webmaster@1	2134 * @endcode
webmaster@1	2135 *
webmaster@1	2136 * When tree relationships are present, the two additional classes
webmaster@1	2137 * 'tabledrag-leaf' and 'tabledrag-root' can be used to refine the behavior:
webmaster@1	2138 * - Rows with the 'tabledrag-leaf' class cannot have child rows.
webmaster@1	2139 * - Rows with the 'tabledrag-root' class cannot be nested under a parent row.
webmaster@1	2140 *
webmaster@1	2141 * Calling drupal_add_tabledrag() would then be written as such:
webmaster@1	2142 * @code
webmaster@1	2143 * drupal_add_tabledrag('my-module-table', 'order', 'sibling', 'my-elements-weight');
webmaster@1	2144 * @endcode
webmaster@1	2145 *
webmaster@1	2146 * In a more complex case where there are several groups in one column (such as
webmaster@1	2147 * the block regions on the admin/build/block page), a separate subgroup class
webmaster@1	2148 * must also be added to differentiate the groups.
webmaster@1	2149 * @code
webmaster@1	2150 * $form['my_elements'][$region][$delta]['weight']['#attributes']['class'] = "my-elements-weight my-elements-weight-". $region;
webmaster@1	2151 * @endcode
webmaster@1	2152 *
webmaster@1	2153 * $group is still 'my-element-weight', and the additional $subgroup variable
webmaster@1	2154 * will be passed in as 'my-elements-weight-'. $region. This also means that
webmaster@1	2155 * you'll need to call drupal_add_tabledrag() once for every region added.
webmaster@1	2156 *
webmaster@1	2157 * @code
webmaster@1	2158 * foreach ($regions as $region) {
webmaster@1	2159 * drupal_add_tabledrag('my-module-table', 'order', 'sibling', 'my-elements-weight', 'my-elements-weight-'. $region);
webmaster@1	2160 * }
webmaster@1	2161 * @endcode
webmaster@1	2162 *
webmaster@1	2163 * In a situation where tree relationships are present, adding multiple
webmaster@1	2164 * subgroups is not necessary, because the table will contain indentations that
webmaster@1	2165 * provide enough information about the sibling and parent relationships.
webmaster@1	2166 * See theme_menu_overview_form() for an example creating a table containing
webmaster@1	2167 * parent relationships.
webmaster@1	2168 *
webmaster@1	2169 * Please note that this function should be called from the theme layer, such as
webmaster@1	2170 * in a .tpl.php file, theme_ function, or in a template_preprocess function,
webmaster@1	2171 * not in a form declartion. Though the same JavaScript could be added to the
webmaster@1	2172 * page using drupal_add_js() directly, this function helps keep template files
webmaster@1	2173 * clean and readable. It also prevents tabledrag.js from being added twice
webmaster@1	2174 * accidentally.
webmaster@1	2175 *
webmaster@1	2176 * @param $table_id
webmaster@1	2177 * String containing the target table's id attribute. If the table does not
webmaster@1	2178 * have an id, one will need to be set, such as <table id="my-module-table">.
webmaster@1	2179 * @param $action
webmaster@1	2180 * String describing the action to be done on the form item. Either 'match'
webmaster@1	2181 * 'depth', or 'order'. Match is typically used for parent relationships.
webmaster@1	2182 * Order is typically used to set weights on other form elements with the same
webmaster@1	2183 * group. Depth updates the target element with the current indentation.
webmaster@1	2184 * @param $relationship
webmaster@1	2185 * String describing where the $action variable should be performed. Either
webmaster@1	2186 * 'parent', 'sibling', 'group', or 'self'. Parent will only look for fields
webmaster@1	2187 * up the tree. Sibling will look for fields in the same group in rows above
webmaster@1	2188 * and below it. Self affects the dragged row itself. Group affects the
webmaster@1	2189 * dragged row, plus any children below it (the entire dragged group).
webmaster@1	2190 * @param $group
webmaster@1	2191 * A class name applied on all related form elements for this action.
webmaster@1	2192 * @param $subgroup
webmaster@1	2193 * (optional) If the group has several subgroups within it, this string should
webmaster@1	2194 * contain the class name identifying fields in the same subgroup.
webmaster@1	2195 * @param $source
webmaster@1	2196 * (optional) If the $action is 'match', this string should contain the class
webmaster@1	2197 * name identifying what field will be used as the source value when matching
webmaster@1	2198 * the value in $subgroup.
webmaster@1	2199 * @param $hidden
webmaster@1	2200 * (optional) The column containing the field elements may be entirely hidden
webmaster@1	2201 * from view dynamically when the JavaScript is loaded. Set to FALSE if the
webmaster@1	2202 * column should not be hidden.
webmaster@1	2203 * @param $limit
webmaster@1	2204 * (optional) Limit the maximum amount of parenting in this table.
webmaster@1	2205 * @see block-admin-display-form.tpl.php
webmaster@1	2206 * @see theme_menu_overview_form()
webmaster@1	2207 */
webmaster@1	2208 function drupal_add_tabledrag($table_id, $action, $relationship, $group, $subgroup = NULL, $source = NULL, $hidden = TRUE, $limit = 0) {
webmaster@1	2209 static $js_added = FALSE;
webmaster@1	2210 if (!$js_added) {
webmaster@1	2211 drupal_add_js('misc/tabledrag.js', 'core');
webmaster@1	2212 $js_added = TRUE;
webmaster@1	2213 }
webmaster@1	2214
webmaster@1	2215 // If a subgroup or source isn't set, assume it is the same as the group.
webmaster@1	2216 $target = isset($subgroup) ? $subgroup : $group;
webmaster@1	2217 $source = isset($source) ? $source : $target;
webmaster@1	2218 $settings['tableDrag'][$table_id][$group][] = array(
webmaster@1	2219 'target' => $target,
webmaster@1	2220 'source' => $source,
webmaster@1	2221 'relationship' => $relationship,
webmaster@1	2222 'action' => $action,
webmaster@1	2223 'hidden' => $hidden,
webmaster@1	2224 'limit' => $limit,
webmaster@1	2225 );
webmaster@1	2226 drupal_add_js($settings, 'setting');
webmaster@1	2227 }
webmaster@1	2228
webmaster@1	2229 /**
webmaster@1	2230 * Aggregate JS files, putting them in the files directory.
webmaster@1	2231 *
webmaster@1	2232 * @param $files
webmaster@1	2233 * An array of JS files to aggregate and compress into one file.
webmaster@1	2234 * @param $filename
webmaster@1	2235 * The name of the aggregate JS file.
webmaster@1	2236 * @return
webmaster@1	2237 * The name of the JS file.
webmaster@1	2238 */
webmaster@1	2239 function drupal_build_js_cache($files, $filename) {
webmaster@1	2240 $contents = '';
webmaster@1	2241
webmaster@1	2242 // Create the js/ within the files folder.
webmaster@1	2243 $jspath = file_create_path('js');
webmaster@1	2244 file_check_directory($jspath, FILE_CREATE_DIRECTORY);
webmaster@1	2245
webmaster@1	2246 if (!file_exists($jspath .'/'. $filename)) {
webmaster@1	2247 // Build aggregate JS file.
webmaster@1	2248 foreach ($files as $path => $info) {
webmaster@1	2249 if ($info['preprocess']) {
webmaster@1	2250 // Append a ';' after each JS file to prevent them from running together.
webmaster@1	2251 $contents .= file_get_contents($path) .';';
webmaster@1	2252 }
webmaster@1	2253 }
webmaster@1	2254
webmaster@1	2255 // Create the JS file.
webmaster@1	2256 file_save_data($contents, $jspath .'/'. $filename, FILE_EXISTS_REPLACE);
webmaster@1	2257 }
webmaster@1	2258
webmaster@1	2259 return $jspath .'/'. $filename;
webmaster@1	2260 }
webmaster@1	2261
webmaster@1	2262 /**
webmaster@1	2263 * Delete all cached JS files.
webmaster@1	2264 */
webmaster@1	2265 function drupal_clear_js_cache() {
webmaster@1	2266 file_scan_directory(file_create_path('js'), '.*', array('.', '..', 'CVS'), 'file_delete', TRUE);
webmaster@1	2267 variable_set('javascript_parsed', array());
webmaster@1	2268 }
webmaster@1	2269
webmaster@1	2270 /**
webmaster@1	2271 * Converts a PHP variable into its Javascript equivalent.
webmaster@1	2272 *
webmaster@1	2273 * We use HTML-safe strings, i.e. with <, > and & escaped.
webmaster@1	2274 */
webmaster@1	2275 function drupal_to_js($var) {
webmaster@1	2276 switch (gettype($var)) {
webmaster@1	2277 case 'boolean':
webmaster@1	2278 return $var ? 'true' : 'false'; // Lowercase necessary!
webmaster@1	2279 case 'integer':
webmaster@1	2280 case 'double':
webmaster@1	2281 return $var;
webmaster@1	2282 case 'resource':
webmaster@1	2283 case 'string':
webmaster@1	2284 return '"'. str_replace(array("\r", "\n", "<", ">", "&"),
webmaster@1	2285 array('\r', '\n', '\x3c', '\x3e', '\x26'),
webmaster@1	2286 addslashes($var)) .'"';
webmaster@1	2287 case 'array':
webmaster@1	2288 // Arrays in JSON can't be associative. If the array is empty or if it
webmaster@1	2289 // has sequential whole number keys starting with 0, it's not associative
webmaster@1	2290 // so we can go ahead and convert it as an array.
webmaster@1	2291 if (empty ($var) \|\| array_keys($var) === range(0, sizeof($var) - 1)) {
webmaster@1	2292 $output = array();
webmaster@1	2293 foreach ($var as $v) {
webmaster@1	2294 $output[] = drupal_to_js($v);
webmaster@1	2295 }
webmaster@1	2296 return '[ '. implode(', ', $output) .' ]';
webmaster@1	2297 }
webmaster@1	2298 // Otherwise, fall through to convert the array as an object.
webmaster@1	2299 case 'object':
webmaster@1	2300 $output = array();
webmaster@1	2301 foreach ($var as $k => $v) {
webmaster@1	2302 $output[] = drupal_to_js(strval($k)) .': '. drupal_to_js($v);
webmaster@1	2303 }
webmaster@1	2304 return '{ '. implode(', ', $output) .' }';
webmaster@1	2305 default:
webmaster@1	2306 return 'null';
webmaster@1	2307 }
webmaster@1	2308 }
webmaster@1	2309
webmaster@1	2310 /**
webmaster@1	2311 * Return data in JSON format.
webmaster@1	2312 *
webmaster@1	2313 * This function should be used for JavaScript callback functions returning
webmaster@1	2314 * data in JSON format. It sets the header for JavaScript output.
webmaster@1	2315 *
webmaster@1	2316 * @param $var
webmaster@1	2317 * (optional) If set, the variable will be converted to JSON and output.
webmaster@1	2318 */
webmaster@1	2319 function drupal_json($var = NULL) {
webmaster@1	2320 // We are returning JavaScript, so tell the browser.
webmaster@1	2321 drupal_set_header('Content-Type: text/javascript; charset=utf-8');
webmaster@1	2322
webmaster@1	2323 if (isset($var)) {
webmaster@1	2324 echo drupal_to_js($var);
webmaster@1	2325 }
webmaster@1	2326 }
webmaster@1	2327
webmaster@1	2328 /**
webmaster@1	2329 * Wrapper around urlencode() which avoids Apache quirks.
webmaster@1	2330 *
webmaster@1	2331 * Should be used when placing arbitrary data in an URL. Note that Drupal paths
webmaster@1	2332 * are urlencoded() when passed through url() and do not require urlencoding()
webmaster@1	2333 * of individual components.
webmaster@1	2334 *
webmaster@1	2335 * Notes:
webmaster@1	2336 * - For esthetic reasons, we do not escape slashes. This also avoids a 'feature'
webmaster@1	2337 * in Apache where it 404s on any path containing '%2F'.
webmaster@1	2338 * - mod_rewrite unescapes %-encoded ampersands, hashes, and slashes when clean
webmaster@1	2339 * URLs are used, which are interpreted as delimiters by PHP. These
webmaster@1	2340 * characters are double escaped so PHP will still see the encoded version.
webmaster@1	2341 * - With clean URLs, Apache changes '//' to '/', so every second slash is
webmaster@1	2342 * double escaped.
webmaster@1	2343 *
webmaster@1	2344 * @param $text
webmaster@1	2345 * String to encode
webmaster@1	2346 */
webmaster@1	2347 function drupal_urlencode($text) {
webmaster@1	2348 if (variable_get('clean_url', '0')) {
webmaster@1	2349 return str_replace(array('%2F', '%26', '%23', '//'),
webmaster@1	2350 array('/', '%2526', '%2523', '/%252F'),
webmaster@1	2351 rawurlencode($text));
webmaster@1	2352 }
webmaster@1	2353 else {
webmaster@1	2354 return str_replace('%2F', '/', rawurlencode($text));
webmaster@1	2355 }
webmaster@1	2356 }
webmaster@1	2357
webmaster@1	2358 /**
webmaster@1	2359 * Ensure the private key variable used to generate tokens is set.
webmaster@1	2360 *
webmaster@1	2361 * @return
webmaster@1	2362 * The private key.
webmaster@1	2363 */
webmaster@1	2364 function drupal_get_private_key() {
webmaster@1	2365 if (!($key = variable_get('drupal_private_key', 0))) {
webmaster@1	2366 $key = md5(uniqid(mt_rand(), true)) . md5(uniqid(mt_rand(), true));
webmaster@1	2367 variable_set('drupal_private_key', $key);
webmaster@1	2368 }
webmaster@1	2369 return $key;
webmaster@1	2370 }
webmaster@1	2371
webmaster@1	2372 /**
webmaster@1	2373 * Generate a token based on $value, the current user session and private key.
webmaster@1	2374 *
webmaster@1	2375 * @param $value
webmaster@1	2376 * An additional value to base the token on.
webmaster@1	2377 */
webmaster@1	2378 function drupal_get_token($value = '') {
webmaster@1	2379 $private_key = drupal_get_private_key();
webmaster@1	2380 return md5(session_id() . $value . $private_key);
webmaster@1	2381 }
webmaster@1	2382
webmaster@1	2383 /**
webmaster@1	2384 * Validate a token based on $value, the current user session and private key.
webmaster@1	2385 *
webmaster@1	2386 * @param $token
webmaster@1	2387 * The token to be validated.
webmaster@1	2388 * @param $value
webmaster@1	2389 * An additional value to base the token on.
webmaster@1	2390 * @param $skip_anonymous
webmaster@1	2391 * Set to true to skip token validation for anonymous users.
webmaster@1	2392 * @return
webmaster@1	2393 * True for a valid token, false for an invalid token. When $skip_anonymous
webmaster@1	2394 * is true, the return value will always be true for anonymous users.
webmaster@1	2395 */
webmaster@1	2396 function drupal_valid_token($token, $value = '', $skip_anonymous = FALSE) {
webmaster@1	2397 global $user;
webmaster@1	2398 return (($skip_anonymous && $user->uid == 0) \|\| ($token == md5(session_id() . $value . variable_get('drupal_private_key', ''))));
webmaster@1	2399 }
webmaster@1	2400
webmaster@1	2401 /**
webmaster@1	2402 * Performs one or more XML-RPC request(s).
webmaster@1	2403 *
webmaster@1	2404 * @param $url
webmaster@1	2405 * An absolute URL of the XML-RPC endpoint.
webmaster@1	2406 * Example:
webmaster@1	2407 * http://www.example.com/xmlrpc.php
webmaster@1	2408 * @param ...
webmaster@1	2409 * For one request:
webmaster@1	2410 * The method name followed by a variable number of arguments to the method.
webmaster@1	2411 * For multiple requests (system.multicall):
webmaster@1	2412 * An array of call arrays. Each call array follows the pattern of the single
webmaster@1	2413 * request: method name followed by the arguments to the method.
webmaster@1	2414 * @return
webmaster@1	2415 * For one request:
webmaster@1	2416 * Either the return value of the method on success, or FALSE.
webmaster@1	2417 * If FALSE is returned, see xmlrpc_errno() and xmlrpc_error_msg().
webmaster@1	2418 * For multiple requests:
webmaster@1	2419 * An array of results. Each result will either be the result
webmaster@1	2420 * returned by the method called, or an xmlrpc_error object if the call
webmaster@1	2421 * failed. See xmlrpc_error().
webmaster@1	2422 */
webmaster@1	2423 function xmlrpc($url) {
webmaster@1	2424 require_once './includes/xmlrpc.inc';
webmaster@1	2425 $args = func_get_args();
webmaster@1	2426 return call_user_func_array('_xmlrpc', $args);
webmaster@1	2427 }
webmaster@1	2428
webmaster@1	2429 function _drupal_bootstrap_full() {
webmaster@1	2430 static $called;
webmaster@1	2431
webmaster@1	2432 if ($called) {
webmaster@1	2433 return;
webmaster@1	2434 }
webmaster@1	2435 $called = 1;
webmaster@1	2436 require_once './includes/theme.inc';
webmaster@1	2437 require_once './includes/pager.inc';
webmaster@1	2438 require_once './includes/menu.inc';
webmaster@1	2439 require_once './includes/tablesort.inc';
webmaster@1	2440 require_once './includes/file.inc';
webmaster@1	2441 require_once './includes/unicode.inc';
webmaster@1	2442 require_once './includes/image.inc';
webmaster@1	2443 require_once './includes/form.inc';
webmaster@1	2444 require_once './includes/mail.inc';
webmaster@1	2445 require_once './includes/actions.inc';
webmaster@1	2446 // Set the Drupal custom error handler.
webmaster@1	2447 set_error_handler('drupal_error_handler');
webmaster@1	2448 // Emit the correct charset HTTP header.
webmaster@1	2449 drupal_set_header('Content-Type: text/html; charset=utf-8');
webmaster@1	2450 // Detect string handling method
webmaster@1	2451 unicode_check();
webmaster@1	2452 // Undo magic quotes
webmaster@1	2453 fix_gpc_magic();
webmaster@1	2454 // Load all enabled modules
webmaster@1	2455 module_load_all();
webmaster@1	2456 // Let all modules take action before menu system handles the request
webmaster@1	2457 // We do not want this while running update.php.
webmaster@1	2458 if (!defined('MAINTENANCE_MODE') \|\| MAINTENANCE_MODE != 'update') {
webmaster@1	2459 module_invoke_all('init');
webmaster@1	2460 }
webmaster@1	2461 }
webmaster@1	2462
webmaster@1	2463 /**
webmaster@1	2464 * Store the current page in the cache.
webmaster@1	2465 *
webmaster@1	2466 * We try to store a gzipped version of the cache. This requires the
webmaster@1	2467 * PHP zlib extension (http://php.net/manual/en/ref.zlib.php).
webmaster@1	2468 * Presence of the extension is checked by testing for the function
webmaster@1	2469 * gzencode. There are two compression algorithms: gzip and deflate.
webmaster@1	2470 * The majority of all modern browsers support gzip or both of them.
webmaster@1	2471 * We thus only deal with the gzip variant and unzip the cache in case
webmaster@1	2472 * the browser does not accept gzip encoding.
webmaster@1	2473 *
webmaster@1	2474 * @see drupal_page_header
webmaster@1	2475 */
webmaster@1	2476 function page_set_cache() {
webmaster@1	2477 global $user, $base_root;
webmaster@1	2478
webmaster@1	2479 if (!$user->uid && $_SERVER['REQUEST_METHOD'] == 'GET' && page_get_cache(TRUE)) {
webmaster@1	2480 // This will fail in some cases, see page_get_cache() for the explanation.
webmaster@1	2481 if ($data = ob_get_contents()) {
webmaster@1	2482 $cache = TRUE;
webmaster@1	2483 if (variable_get('page_compression', TRUE) && function_exists('gzencode')) {
webmaster@1	2484 // We do not store the data in case the zlib mode is deflate.
webmaster@1	2485 // This should be rarely happening.
webmaster@1	2486 if (zlib_get_coding_type() == 'deflate') {
webmaster@1	2487 $cache = FALSE;
webmaster@1	2488 }
webmaster@1	2489 else if (zlib_get_coding_type() == FALSE) {
webmaster@1	2490 $data = gzencode($data, 9, FORCE_GZIP);
webmaster@1	2491 }
webmaster@1	2492 // The remaining case is 'gzip' which means the data is
webmaster@1	2493 // already compressed and nothing left to do but to store it.
webmaster@1	2494 }
webmaster@1	2495 ob_end_flush();
webmaster@1	2496 if ($cache && $data) {
webmaster@1	2497 cache_set($base_root . request_uri(), $data, 'cache_page', CACHE_TEMPORARY, drupal_get_headers());
webmaster@1	2498 }
webmaster@1	2499 }
webmaster@1	2500 }
webmaster@1	2501 }
webmaster@1	2502
webmaster@1	2503 /**
webmaster@1	2504 * Executes a cron run when called
webmaster@1	2505 * @return
webmaster@1	2506 * Returns TRUE if ran successfully
webmaster@1	2507 */
webmaster@1	2508 function drupal_cron_run() {
webmaster@1	2509 // If not in 'safe mode', increase the maximum execution time:
webmaster@1	2510 if (!ini_get('safe_mode')) {
webmaster@1	2511 set_time_limit(240);
webmaster@1	2512 }
webmaster@1	2513
webmaster@1	2514 // Fetch the cron semaphore
webmaster@1	2515 $semaphore = variable_get('cron_semaphore', FALSE);
webmaster@1	2516
webmaster@1	2517 if ($semaphore) {
webmaster@1	2518 if (time() - $semaphore > 3600) {
webmaster@1	2519 // Either cron has been running for more than an hour or the semaphore
webmaster@1	2520 // was not reset due to a database error.
webmaster@1	2521 watchdog('cron', 'Cron has been running for more than an hour and is most likely stuck.', array(), WATCHDOG_ERROR);
webmaster@1	2522
webmaster@1	2523 // Release cron semaphore
webmaster@1	2524 variable_del('cron_semaphore');
webmaster@1	2525 }
webmaster@1	2526 else {
webmaster@1	2527 // Cron is still running normally.
webmaster@1	2528 watchdog('cron', 'Attempting to re-run cron while it is already running.', array(), WATCHDOG_WARNING);
webmaster@1	2529 }
webmaster@1	2530 }
webmaster@1	2531 else {
webmaster@1	2532 // Register shutdown callback
webmaster@1	2533 register_shutdown_function('drupal_cron_cleanup');
webmaster@1	2534
webmaster@1	2535 // Lock cron semaphore
webmaster@1	2536 variable_set('cron_semaphore', time());
webmaster@1	2537
webmaster@1	2538 // Iterate through the modules calling their cron handlers (if any):
webmaster@1	2539 module_invoke_all('cron');
webmaster@1	2540
webmaster@1	2541 // Record cron time
webmaster@1	2542 variable_set('cron_last', time());
webmaster@1	2543 watchdog('cron', 'Cron run completed.', array(), WATCHDOG_NOTICE);
webmaster@1	2544
webmaster@1	2545 // Release cron semaphore
webmaster@1	2546 variable_del('cron_semaphore');
webmaster@1	2547
webmaster@1	2548 // Return TRUE so other functions can check if it did run successfully
webmaster@1	2549 return TRUE;
webmaster@1	2550 }
webmaster@1	2551 }
webmaster@1	2552
webmaster@1	2553 /**
webmaster@1	2554 * Shutdown function for cron cleanup.
webmaster@1	2555 */
webmaster@1	2556 function drupal_cron_cleanup() {
webmaster@1	2557 // See if the semaphore is still locked.
webmaster@1	2558 if (variable_get('cron_semaphore', FALSE)) {
webmaster@1	2559 watchdog('cron', 'Cron run exceeded the time limit and was aborted.', array(), WATCHDOG_WARNING);
webmaster@1	2560
webmaster@1	2561 // Release cron semaphore
webmaster@1	2562 variable_del('cron_semaphore');
webmaster@1	2563 }
webmaster@1	2564 }
webmaster@1	2565
webmaster@1	2566 /**
webmaster@1	2567 * Return an array of system file objects.
webmaster@1	2568 *
webmaster@1	2569 * Returns an array of file objects of the given type from the site-wide
webmaster@1	2570 * directory (i.e. modules/), the all-sites directory (i.e.
webmaster@1	2571 * sites/all/modules/), the profiles directory, and site-specific directory
webmaster@1	2572 * (i.e. sites/somesite/modules/). The returned array will be keyed using the
webmaster@1	2573 * key specified (name, basename, filename). Using name or basename will cause
webmaster@1	2574 * site-specific files to be prioritized over similar files in the default
webmaster@1	2575 * directories. That is, if a file with the same name appears in both the
webmaster@1	2576 * site-wide directory and site-specific directory, only the site-specific
webmaster@1	2577 * version will be included.
webmaster@1	2578 *
webmaster@1	2579 * @param $mask
webmaster@1	2580 * The regular expression of the files to find.
webmaster@1	2581 * @param $directory
webmaster@1	2582 * The subdirectory name in which the files are found. For example,
webmaster@1	2583 * 'modules' will search in both modules/ and
webmaster@1	2584 * sites/somesite/modules/.
webmaster@1	2585 * @param $key
webmaster@1	2586 * The key to be passed to file_scan_directory().
webmaster@1	2587 * @param $min_depth
webmaster@1	2588 * Minimum depth of directories to return files from.
webmaster@1	2589 *
webmaster@1	2590 * @return
webmaster@1	2591 * An array of file objects of the specified type.
webmaster@1	2592 */
webmaster@1	2593 function drupal_system_listing($mask, $directory, $key = 'name', $min_depth = 1) {
webmaster@1	2594 global $profile;
webmaster@1	2595 $config = conf_path();
webmaster@1	2596
webmaster@1	2597 // When this function is called during Drupal's initial installation process,
webmaster@1	2598 // the name of the profile that's about to be installed is stored in the global
webmaster@1	2599 // $profile variable. At all other times, the standard Drupal systems variable
webmaster@1	2600 // table contains the name of the current profile, and we can call variable_get()
webmaster@1	2601 // to determine what one is active.
webmaster@1	2602 if (!isset($profile)) {
webmaster@1	2603 $profile = variable_get('install_profile', 'default');
webmaster@1	2604 }
webmaster@1	2605 $searchdir = array($directory);
webmaster@1	2606 $files = array();
webmaster@1	2607
webmaster@1	2608 // Always search sites/all/* as well as the global directories
webmaster@1	2609 $searchdir[] = 'sites/all/'. $directory;
webmaster@1	2610
webmaster@1	2611 // The 'profiles' directory contains pristine collections of modules and
webmaster@1	2612 // themes as organized by a distribution. It is pristine in the same way
webmaster@1	2613 // that /modules is pristine for core; users should avoid changing anything
webmaster@1	2614 // there in favor of sites/all or sites/<domain> directories.
webmaster@1	2615 if (file_exists("profiles/$profile/$directory")) {
webmaster@1	2616 $searchdir[] = "profiles/$profile/$directory";
webmaster@1	2617 }
webmaster@1	2618
webmaster@1	2619 if (file_exists("$config/$directory")) {
webmaster@1	2620 $searchdir[] = "$config/$directory";
webmaster@1	2621 }
webmaster@1	2622
webmaster@1	2623 // Get current list of items
webmaster@1	2624 foreach ($searchdir as $dir) {
webmaster@1	2625 $files = array_merge($files, file_scan_directory($dir, $mask, array('.', '..', 'CVS'), 0, TRUE, $key, $min_depth));
webmaster@1	2626 }
webmaster@1	2627
webmaster@1	2628 return $files;
webmaster@1	2629 }
webmaster@1	2630
webmaster@1	2631
webmaster@1	2632 /**
webmaster@1	2633 * This dispatch function hands off structured Drupal arrays to type-specific
webmaster@1	2634 * *_alter implementations. It ensures a consistent interface for all altering
webmaster@1	2635 * operations.
webmaster@1	2636 *
webmaster@1	2637 * @param $type
webmaster@1	2638 * The data type of the structured array. 'form', 'links',
webmaster@1	2639 * 'node_content', and so on are several examples.
webmaster@1	2640 * @param $data
webmaster@1	2641 * The structured array to be altered.
webmaster@1	2642 * @param ...
webmaster@1	2643 * Any additional params will be passed on to the called
webmaster@1	2644 * hook_$type_alter functions.
webmaster@1	2645 */
webmaster@1	2646 function drupal_alter($type, &$data) {
webmaster@1	2647 // PHP's func_get_args() always returns copies of params, not references, so
webmaster@1	2648 // drupal_alter() can only manipulate data that comes in via the required first
webmaster@1	2649 // param. For the edge case functions that must pass in an arbitrary number of
webmaster@1	2650 // alterable parameters (hook_form_alter() being the best example), an array of
webmaster@1	2651 // those params can be placed in the __drupal_alter_by_ref key of the $data
webmaster@1	2652 // array. This is somewhat ugly, but is an unavoidable consequence of a flexible
webmaster@1	2653 // drupal_alter() function, and the limitations of func_get_args().
webmaster@1	2654 // @todo: Remove this in Drupal 7.
webmaster@1	2655 if (is_array($data) && isset($data['__drupal_alter_by_ref'])) {
webmaster@1	2656 $by_ref_parameters = $data['__drupal_alter_by_ref'];
webmaster@1	2657 unset($data['__drupal_alter_by_ref']);
webmaster@1	2658 }
webmaster@1	2659
webmaster@1	2660 // Hang onto a reference to the data array so that it isn't blown away later.
webmaster@1	2661 // Also, merge in any parameters that need to be passed by reference.
webmaster@1	2662 $args = array(&$data);
webmaster@1	2663 if (isset($by_ref_parameters)) {
webmaster@1	2664 $args = array_merge($args, $by_ref_parameters);
webmaster@1	2665 }
webmaster@1	2666
webmaster@1	2667 // Now, use func_get_args() to pull in any additional parameters passed into
webmaster@1	2668 // the drupal_alter() call.
webmaster@1	2669 $additional_args = func_get_args();
webmaster@1	2670 array_shift($additional_args);
webmaster@1	2671 array_shift($additional_args);
webmaster@1	2672 $args = array_merge($args, $additional_args);
webmaster@1	2673
webmaster@1	2674 foreach (module_implements($type .'_alter') as $module) {
webmaster@1	2675 $function = $module .'_'. $type .'_alter';
webmaster@1	2676 call_user_func_array($function, $args);
webmaster@1	2677 }
webmaster@1	2678 }
webmaster@1	2679
webmaster@1	2680
webmaster@1	2681 /**
webmaster@1	2682 * Renders HTML given a structured array tree.
webmaster@1	2683 *
webmaster@1	2684 * Recursively iterates over each of the array elements, generating HTML code.
webmaster@1	2685 * This function is usually called from within a another function, like
webmaster@1	2686 * drupal_get_form() or node_view().
webmaster@1	2687 *
webmaster@1	2688 * @param $elements
webmaster@1	2689 * The structured array describing the data to be rendered.
webmaster@1	2690 * @return
webmaster@1	2691 * The rendered HTML.
webmaster@1	2692 */
webmaster@1	2693 function drupal_render(&$elements) {
webmaster@1	2694 if (!isset($elements) \|\| (isset($elements['#access']) && !$elements['#access'])) {
webmaster@1	2695 return NULL;
webmaster@1	2696 }
webmaster@1	2697
webmaster@1	2698 // If the default values for this element haven't been loaded yet, populate
webmaster@1	2699 // them.
webmaster@1	2700 if (!isset($elements['#defaults_loaded']) \|\| !$elements['#defaults_loaded']) {
webmaster@1	2701 if ((!empty($elements['#type'])) && ($info = _element_info($elements['#type']))) {
webmaster@1	2702 $elements += $info;
webmaster@1	2703 }
webmaster@1	2704 }
webmaster@1	2705
webmaster@1	2706 // Make any final changes to the element before it is rendered. This means
webmaster@1	2707 // that the $element or the children can be altered or corrected before the
webmaster@1	2708 // element is rendered into the final text.
webmaster@1	2709 if (isset($elements['#pre_render'])) {
webmaster@1	2710 foreach ($elements['#pre_render'] as $function) {
webmaster@1	2711 if (function_exists($function)) {
webmaster@1	2712 $elements = $function($elements);
webmaster@1	2713 }
webmaster@1	2714 }
webmaster@1	2715 }
webmaster@1	2716
webmaster@1	2717 $content = '';
webmaster@1	2718 // Either the elements did not go through form_builder or one of the children
webmaster@1	2719 // has a #weight.
webmaster@1	2720 if (!isset($elements['#sorted'])) {
webmaster@1	2721 uasort($elements, "element_sort");
webmaster@1	2722 }
webmaster@1	2723 $elements += array('#title' => NULL, '#description' => NULL);
webmaster@1	2724 if (!isset($elements['#children'])) {
webmaster@1	2725 $children = element_children($elements);
webmaster@1	2726 /* Render all the children that use a theme function */
webmaster@1	2727 if (isset($elements['#theme']) && empty($elements['#theme_used'])) {
webmaster@1	2728 $elements['#theme_used'] = TRUE;
webmaster@1	2729
webmaster@1	2730 $previous = array();
webmaster@1	2731 foreach (array('#value', '#type', '#prefix', '#suffix') as $key) {
webmaster@1	2732 $previous[$key] = isset($elements[$key]) ? $elements[$key] : NULL;
webmaster@1	2733 }
webmaster@1	2734 // If we rendered a single element, then we will skip the renderer.
webmaster@1	2735 if (empty($children)) {
webmaster@1	2736 $elements['#printed'] = TRUE;
webmaster@1	2737 }
webmaster@1	2738 else {
webmaster@1	2739 $elements['#value'] = '';
webmaster@1	2740 }
webmaster@1	2741 $elements['#type'] = 'markup';
webmaster@1	2742
webmaster@1	2743 unset($elements['#prefix'], $elements['#suffix']);
webmaster@1	2744 $content = theme($elements['#theme'], $elements);
webmaster@1	2745
webmaster@1	2746 foreach (array('#value', '#type', '#prefix', '#suffix') as $key) {
webmaster@1	2747 $elements[$key] = isset($previous[$key]) ? $previous[$key] : NULL;
webmaster@1	2748 }
webmaster@1	2749 }
webmaster@1	2750 /* render each of the children using drupal_render and concatenate them */
webmaster@1	2751 if (!isset($content) \|\| $content === '') {
webmaster@1	2752 foreach ($children as $key) {
webmaster@1	2753 $content .= drupal_render($elements[$key]);
webmaster@1	2754 }
webmaster@1	2755 }
webmaster@1	2756 }
webmaster@1	2757 if (isset($content) && $content !== '') {
webmaster@1	2758 $elements['#children'] = $content;
webmaster@1	2759 }
webmaster@1	2760
webmaster@1	2761 // Until now, we rendered the children, here we render the element itself
webmaster@1	2762 if (!isset($elements['#printed'])) {
webmaster@1	2763 $content = theme(!empty($elements['#type']) ? $elements['#type'] : 'markup', $elements);
webmaster@1	2764 $elements['#printed'] = TRUE;
webmaster@1	2765 }
webmaster@1	2766
webmaster@1	2767 if (isset($content) && $content !== '') {
webmaster@1	2768 // Filter the outputted content and make any last changes before the
webmaster@1	2769 // content is sent to the browser. The changes are made on $content
webmaster@1	2770 // which allows the output'ed text to be filtered.
webmaster@1	2771 if (isset($elements['#post_render'])) {
webmaster@1	2772 foreach ($elements['#post_render'] as $function) {
webmaster@1	2773 if (function_exists($function)) {
webmaster@1	2774 $content = $function($content, $elements);
webmaster@1	2775 }
webmaster@1	2776 }
webmaster@1	2777 }
webmaster@1	2778 $prefix = isset($elements['#prefix']) ? $elements['#prefix'] : '';
webmaster@1	2779 $suffix = isset($elements['#suffix']) ? $elements['#suffix'] : '';
webmaster@1	2780 return $prefix . $content . $suffix;
webmaster@1	2781 }
webmaster@1	2782 }
webmaster@1	2783
webmaster@1	2784 /**
webmaster@1	2785 * Function used by uasort to sort structured arrays by weight.
webmaster@1	2786 */
webmaster@1	2787 function element_sort($a, $b) {
webmaster@1	2788 $a_weight = (is_array($a) && isset($a['#weight'])) ? $a['#weight'] : 0;
webmaster@1	2789 $b_weight = (is_array($b) && isset($b['#weight'])) ? $b['#weight'] : 0;
webmaster@1	2790 if ($a_weight == $b_weight) {
webmaster@1	2791 return 0;
webmaster@1	2792 }
webmaster@1	2793 return ($a_weight < $b_weight) ? -1 : 1;
webmaster@1	2794 }
webmaster@1	2795
webmaster@1	2796 /**
webmaster@1	2797 * Check if the key is a property.
webmaster@1	2798 */
webmaster@1	2799 function element_property($key) {
webmaster@1	2800 return $key[0] == '#';
webmaster@1	2801 }
webmaster@1	2802
webmaster@1	2803 /**
webmaster@1	2804 * Get properties of a structured array element. Properties begin with '#'.
webmaster@1	2805 */
webmaster@1	2806 function element_properties($element) {
webmaster@1	2807 return array_filter(array_keys((array) $element), 'element_property');
webmaster@1	2808 }
webmaster@1	2809
webmaster@1	2810 /**
webmaster@1	2811 * Check if the key is a child.
webmaster@1	2812 */
webmaster@1	2813 function element_child($key) {
webmaster@1	2814 return !isset($key[0]) \|\| $key[0] != '#';
webmaster@1	2815 }
webmaster@1	2816
webmaster@1	2817 /**
webmaster@1	2818 * Get keys of a structured array tree element that are not properties (i.e., do not begin with '#').
webmaster@1	2819 */
webmaster@1	2820 function element_children($element) {
webmaster@1	2821 return array_filter(array_keys((array) $element), 'element_child');
webmaster@1	2822 }
webmaster@1	2823
webmaster@1	2824 /**
webmaster@1	2825 * Provide theme registration for themes across .inc files.
webmaster@1	2826 */
webmaster@1	2827 function drupal_common_theme() {
webmaster@1	2828 return array(
webmaster@1	2829 // theme.inc
webmaster@1	2830 'placeholder' => array(
webmaster@1	2831 'arguments' => array('text' => NULL)
webmaster@1	2832 ),
webmaster@1	2833 'page' => array(
webmaster@1	2834 'arguments' => array('content' => NULL, 'show_blocks' => TRUE, 'show_messages' => TRUE),
webmaster@1	2835 'template' => 'page',
webmaster@1	2836 ),
webmaster@1	2837 'maintenance_page' => array(
webmaster@1	2838 'arguments' => array('content' => NULL, 'show_blocks' => TRUE, 'show_messages' => TRUE),
webmaster@1	2839 'template' => 'maintenance-page',
webmaster@1	2840 ),
webmaster@1	2841 'update_page' => array(
webmaster@1	2842 'arguments' => array('content' => NULL, 'show_messages' => TRUE),
webmaster@1	2843 ),
webmaster@1	2844 'install_page' => array(
webmaster@1	2845 'arguments' => array('content' => NULL),
webmaster@1	2846 ),
webmaster@1	2847 'task_list' => array(
webmaster@1	2848 'arguments' => array('items' => NULL, 'active' => NULL),
webmaster@1	2849 ),
webmaster@1	2850 'status_messages' => array(
webmaster@1	2851 'arguments' => array('display' => NULL),
webmaster@1	2852 ),
webmaster@1	2853 'links' => array(
webmaster@1	2854 'arguments' => array('links' => NULL, 'attributes' => array('class' => 'links')),
webmaster@1	2855 ),
webmaster@1	2856 'image' => array(
webmaster@1	2857 'arguments' => array('path' => NULL, 'alt' => '', 'title' => '', 'attributes' => NULL, 'getsize' => TRUE),
webmaster@1	2858 ),
webmaster@1	2859 'breadcrumb' => array(
webmaster@1	2860 'arguments' => array('breadcrumb' => NULL),
webmaster@1	2861 ),
webmaster@1	2862 'help' => array(
webmaster@1	2863 'arguments' => array(),
webmaster@1	2864 ),
webmaster@1	2865 'submenu' => array(
webmaster@1	2866 'arguments' => array('links' => NULL),
webmaster@1	2867 ),
webmaster@1	2868 'table' => array(
webmaster@1	2869 'arguments' => array('header' => NULL, 'rows' => NULL, 'attributes' => array(), 'caption' => NULL),
webmaster@1	2870 ),
webmaster@1	2871 'table_select_header_cell' => array(
webmaster@1	2872 'arguments' => array(),
webmaster@1	2873 ),
webmaster@1	2874 'tablesort_indicator' => array(
webmaster@1	2875 'arguments' => array('style' => NULL),
webmaster@1	2876 ),
webmaster@1	2877 'box' => array(
webmaster@1	2878 'arguments' => array('title' => NULL, 'content' => NULL, 'region' => 'main'),
webmaster@1	2879 'template' => 'box',
webmaster@1	2880 ),
webmaster@1	2881 'block' => array(
webmaster@1	2882 'arguments' => array('block' => NULL),
webmaster@1	2883 'template' => 'block',
webmaster@1	2884 ),
webmaster@1	2885 'mark' => array(
webmaster@1	2886 'arguments' => array('type' => MARK_NEW),
webmaster@1	2887 ),
webmaster@1	2888 'item_list' => array(
webmaster@1	2889 'arguments' => array('items' => array(), 'title' => NULL, 'type' => 'ul', 'attributes' => NULL),
webmaster@1	2890 ),
webmaster@1	2891 'more_help_link' => array(
webmaster@1	2892 'arguments' => array('url' => NULL),
webmaster@1	2893 ),
webmaster@1	2894 'xml_icon' => array(
webmaster@1	2895 'arguments' => array('url' => NULL),
webmaster@1	2896 ),
webmaster@1	2897 'feed_icon' => array(
webmaster@1	2898 'arguments' => array('url' => NULL, 'title' => NULL),
webmaster@1	2899 ),
webmaster@1	2900 'more_link' => array(
webmaster@1	2901 'arguments' => array('url' => NULL, 'title' => NULL)
webmaster@1	2902 ),
webmaster@1	2903 'closure' => array(
webmaster@1	2904 'arguments' => array('main' => 0),
webmaster@1	2905 ),
webmaster@1	2906 'blocks' => array(
webmaster@1	2907 'arguments' => array('region' => NULL),
webmaster@1	2908 ),
webmaster@1	2909 'username' => array(
webmaster@1	2910 'arguments' => array('object' => NULL),
webmaster@1	2911 ),
webmaster@1	2912 'progress_bar' => array(
webmaster@1	2913 'arguments' => array('percent' => NULL, 'message' => NULL),
webmaster@1	2914 ),
webmaster@1	2915 'indentation' => array(
webmaster@1	2916 'arguments' => array('size' => 1),
webmaster@1	2917 ),
webmaster@1	2918 // from pager.inc
webmaster@1	2919 'pager' => array(
webmaster@1	2920 'arguments' => array('tags' => array(), 'limit' => 10, 'element' => 0, 'parameters' => array()),
webmaster@1	2921 ),
webmaster@1	2922 'pager_first' => array(
webmaster@1	2923 'arguments' => array('text' => NULL, 'limit' => NULL, 'element' => 0, 'parameters' => array()),
webmaster@1	2924 ),
webmaster@1	2925 'pager_previous' => array(
webmaster@1	2926 'arguments' => array('text' => NULL, 'limit' => NULL, 'element' => 0, 'interval' => 1, 'parameters' => array()),
webmaster@1	2927 ),
webmaster@1	2928 'pager_next' => array(
webmaster@1	2929 'arguments' => array('text' => NULL, 'limit' => NULL, 'element' => 0, 'interval' => 1, 'parameters' => array()),
webmaster@1	2930 ),
webmaster@1	2931 'pager_last' => array(
webmaster@1	2932 'arguments' => array('text' => NULL, 'limit' => NULL, 'element' => 0, 'parameters' => array()),
webmaster@1	2933 ),
webmaster@1	2934 'pager_link' => array(
webmaster@1	2935 'arguments' => array('text' => NULL, 'page_new' => NULL, 'element' => NULL, 'parameters' => array(), 'attributes' => array()),
webmaster@1	2936 ),
webmaster@1	2937 // from locale.inc
webmaster@1	2938 'locale_admin_manage_screen' => array(
webmaster@1	2939 'arguments' => array('form' => NULL),
webmaster@1	2940 ),
webmaster@1	2941 // from menu.inc
webmaster@1	2942 'menu_item_link' => array(
webmaster@1	2943 'arguments' => array('item' => NULL),
webmaster@1	2944 ),
webmaster@1	2945 'menu_tree' => array(
webmaster@1	2946 'arguments' => array('tree' => NULL),
webmaster@1	2947 ),
webmaster@1	2948 'menu_item' => array(
webmaster@1	2949 'arguments' => array('link' => NULL, 'has_children' => NULL, 'menu' => ''),
webmaster@1	2950 ),
webmaster@1	2951 'menu_local_task' => array(
webmaster@1	2952 'arguments' => array('link' => NULL, 'active' => FALSE),
webmaster@1	2953 ),
webmaster@1	2954 'menu_local_tasks' => array(
webmaster@1	2955 'arguments' => array(),
webmaster@1	2956 ),
webmaster@1	2957 // from form.inc
webmaster@1	2958 'select' => array(
webmaster@1	2959 'arguments' => array('element' => NULL),
webmaster@1	2960 ),
webmaster@1	2961 'fieldset' => array(
webmaster@1	2962 'arguments' => array('element' => NULL),
webmaster@1	2963 ),
webmaster@1	2964 'radio' => array(
webmaster@1	2965 'arguments' => array('element' => NULL),
webmaster@1	2966 ),
webmaster@1	2967 'radios' => array(
webmaster@1	2968 'arguments' => array('element' => NULL),
webmaster@1	2969 ),
webmaster@1	2970 'password_confirm' => array(
webmaster@1	2971 'arguments' => array('element' => NULL),
webmaster@1	2972 ),
webmaster@1	2973 'date' => array(
webmaster@1	2974 'arguments' => array('element' => NULL),
webmaster@1	2975 ),
webmaster@1	2976 'item' => array(
webmaster@1	2977 'arguments' => array('element' => NULL),
webmaster@1	2978 ),
webmaster@1	2979 'checkbox' => array(
webmaster@1	2980 'arguments' => array('element' => NULL),
webmaster@1	2981 ),
webmaster@1	2982 'checkboxes' => array(
webmaster@1	2983 'arguments' => array('element' => NULL),
webmaster@1	2984 ),
webmaster@1	2985 'submit' => array(
webmaster@1	2986 'arguments' => array('element' => NULL),
webmaster@1	2987 ),
webmaster@1	2988 'button' => array(
webmaster@1	2989 'arguments' => array('element' => NULL),
webmaster@1	2990 ),
webmaster@1	2991 'image_button' => array(
webmaster@1	2992 'arguments' => array('element' => NULL),
webmaster@1	2993 ),
webmaster@1	2994 'hidden' => array(
webmaster@1	2995 'arguments' => array('element' => NULL),
webmaster@1	2996 ),
webmaster@1	2997 'token' => array(
webmaster@1	2998 'arguments' => array('element' => NULL),
webmaster@1	2999 ),
webmaster@1	3000 'textfield' => array(
webmaster@1	3001 'arguments' => array('element' => NULL),
webmaster@1	3002 ),
webmaster@1	3003 'form' => array(
webmaster@1	3004 'arguments' => array('element' => NULL),
webmaster@1	3005 ),
webmaster@1	3006 'textarea' => array(
webmaster@1	3007 'arguments' => array('element' => NULL),
webmaster@1	3008 ),
webmaster@1	3009 'markup' => array(
webmaster@1	3010 'arguments' => array('element' => NULL),
webmaster@1	3011 ),
webmaster@1	3012 'password' => array(
webmaster@1	3013 'arguments' => array('element' => NULL),
webmaster@1	3014 ),
webmaster@1	3015 'file' => array(
webmaster@1	3016 'arguments' => array('element' => NULL),
webmaster@1	3017 ),
webmaster@1	3018 'form_element' => array(
webmaster@1	3019 'arguments' => array('element' => NULL, 'value' => NULL),
webmaster@1	3020 ),
webmaster@1	3021 );
webmaster@1	3022 }
webmaster@1	3023
webmaster@1	3024 /**
webmaster@1	3025 * @ingroup schemaapi
webmaster@1	3026 * @{
webmaster@1	3027 */
webmaster@1	3028
webmaster@1	3029 /**
webmaster@1	3030 * Get the schema definition of a table, or the whole database schema.
webmaster@1	3031 *
webmaster@1	3032 * The returned schema will include any modifications made by any
webmaster@1	3033 * module that implements hook_schema_alter().
webmaster@1	3034 *
webmaster@1	3035 * @param $table
webmaster@1	3036 * The name of the table. If not given, the schema of all tables is returned.
webmaster@1	3037 * @param $rebuild
webmaster@1	3038 * If true, the schema will be rebuilt instead of retrieved from the cache.
webmaster@1	3039 */
webmaster@1	3040 function drupal_get_schema($table = NULL, $rebuild = FALSE) {
webmaster@1	3041 static $schema = array();
webmaster@1	3042
webmaster@1	3043 if (empty($schema) \|\| $rebuild) {
webmaster@1	3044 // Try to load the schema from cache.
webmaster@1	3045 if (!$rebuild && $cached = cache_get('schema')) {
webmaster@1	3046 $schema = $cached->data;
webmaster@1	3047 }
webmaster@1	3048 // Otherwise, rebuild the schema cache.
webmaster@1	3049 else {
webmaster@1	3050 $schema = array();
webmaster@1	3051 // Load the .install files to get hook_schema.
webmaster@1	3052 module_load_all_includes('install');
webmaster@1	3053
webmaster@1	3054 // Invoke hook_schema for all modules.
webmaster@1	3055 foreach (module_implements('schema') as $module) {
webmaster@1	3056 $current = module_invoke($module, 'schema');
webmaster@1	3057 _drupal_initialize_schema($module, $current);
webmaster@1	3058 $schema = array_merge($schema, $current);
webmaster@1	3059 }
webmaster@1	3060
webmaster@1	3061 drupal_alter('schema', $schema);
webmaster@1	3062 cache_set('schema', $schema);
webmaster@1	3063 }
webmaster@1	3064 }
webmaster@1	3065
webmaster@1	3066 if (!isset($table)) {
webmaster@1	3067 return $schema;
webmaster@1	3068 }
webmaster@1	3069 elseif (isset($schema[$table])) {
webmaster@1	3070 return $schema[$table];
webmaster@1	3071 }
webmaster@1	3072 else {
webmaster@1	3073 return FALSE;
webmaster@1	3074 }
webmaster@1	3075 }
webmaster@1	3076
webmaster@1	3077 /**
webmaster@1	3078 * Create all tables that a module defines in its hook_schema().
webmaster@1	3079 *
webmaster@1	3080 * Note: This function does not pass the module's schema through
webmaster@1	3081 * hook_schema_alter(). The module's tables will be created exactly as the
webmaster@1	3082 * module defines them.
webmaster@1	3083 *
webmaster@1	3084 * @param $module
webmaster@1	3085 * The module for which the tables will be created.
webmaster@1	3086 * @return
webmaster@1	3087 * An array of arrays with the following key/value pairs:
webmaster@1	3088 * success: a boolean indicating whether the query succeeded
webmaster@1	3089 * query: the SQL query(s) executed, passed through check_plain()
webmaster@1	3090 */
webmaster@1	3091 function drupal_install_schema($module) {
webmaster@1	3092 $schema = drupal_get_schema_unprocessed($module);
webmaster@1	3093 _drupal_initialize_schema($module, $schema);
webmaster@1	3094
webmaster@1	3095 $ret = array();
webmaster@1	3096 foreach ($schema as $name => $table) {
webmaster@1	3097 db_create_table($ret, $name, $table);
webmaster@1	3098 }
webmaster@1	3099 return $ret;
webmaster@1	3100 }
webmaster@1	3101
webmaster@1	3102 /**
webmaster@1	3103 * Remove all tables that a module defines in its hook_schema().
webmaster@1	3104 *
webmaster@1	3105 * Note: This function does not pass the module's schema through
webmaster@1	3106 * hook_schema_alter(). The module's tables will be created exactly as the
webmaster@1	3107 * module defines them.
webmaster@1	3108 *
webmaster@1	3109 * @param $module
webmaster@1	3110 * The module for which the tables will be removed.
webmaster@1	3111 * @return
webmaster@1	3112 * An array of arrays with the following key/value pairs:
webmaster@1	3113 * success: a boolean indicating whether the query succeeded
webmaster@1	3114 * query: the SQL query(s) executed, passed through check_plain()
webmaster@1	3115 */
webmaster@1	3116 function drupal_uninstall_schema($module) {
webmaster@1	3117 $schema = drupal_get_schema_unprocessed($module);
webmaster@1	3118 _drupal_initialize_schema($module, $schema);
webmaster@1	3119
webmaster@1	3120 $ret = array();
webmaster@1	3121 foreach ($schema as $table) {
webmaster@1	3122 db_drop_table($ret, $table['name']);
webmaster@1	3123 }
webmaster@1	3124 return $ret;
webmaster@1	3125 }
webmaster@1	3126
webmaster@1	3127 /**
webmaster@1	3128 * Returns the unprocessed and unaltered version of a module's schema.
webmaster@1	3129 *
webmaster@1	3130 * Use this function only if you explicitly need the original
webmaster@1	3131 * specification of a schema, as it was defined in a module's
webmaster@1	3132 * hook_schema(). No additional default values will be set,
webmaster@1	3133 * hook_schema_alter() is not invoked and these unprocessed
webmaster@1	3134 * definitions won't be cached.
webmaster@1	3135 *
webmaster@1	3136 * This function can be used to retrieve a schema specification in
webmaster@1	3137 * hook_schema(), so it allows you to derive your tables from existing
webmaster@1	3138 * specifications.
webmaster@1	3139 *
webmaster@1	3140 * It is also used by drupal_install_schema() and
webmaster@1	3141 * drupal_uninstall_schema() to ensure that a module's tables are
webmaster@1	3142 * created exactly as specified without any changes introduced by a
webmaster@1	3143 * module that implements hook_schema_alter().
webmaster@1	3144 *
webmaster@1	3145 * @param $module
webmaster@1	3146 * The module to which the table belongs.
webmaster@1	3147 * @param $table
webmaster@1	3148 * The name of the table. If not given, the module's complete schema
webmaster@1	3149 * is returned.
webmaster@1	3150 */
webmaster@1	3151 function drupal_get_schema_unprocessed($module, $table = NULL) {
webmaster@1	3152 // Load the .install file to get hook_schema.
webmaster@1	3153 module_load_include('install', $module);
webmaster@1	3154 $schema = module_invoke($module, 'schema');
webmaster@1	3155
webmaster@1	3156 if (!is_null($table) && isset($schema[$table])) {
webmaster@1	3157 return $schema[$table];
webmaster@1	3158 }
webmaster@1	3159 else {
webmaster@1	3160 return $schema;
webmaster@1	3161 }
webmaster@1	3162 }
webmaster@1	3163
webmaster@1	3164 /**
webmaster@1	3165 * Fill in required default values for table definitions returned by hook_schema().
webmaster@1	3166 *
webmaster@1	3167 * @param $module
webmaster@1	3168 * The module for which hook_schema() was invoked.
webmaster@1	3169 * @param $schema
webmaster@1	3170 * The schema definition array as it was returned by the module's
webmaster@1	3171 * hook_schema().
webmaster@1	3172 */
webmaster@1	3173 function _drupal_initialize_schema($module, &$schema) {
webmaster@1	3174 // Set the name and module key for all tables.
webmaster@1	3175 foreach ($schema as $name => $table) {
webmaster@1	3176 if (empty($table['module'])) {
webmaster@1	3177 $schema[$name]['module'] = $module;
webmaster@1	3178 }
webmaster@1	3179 if (!isset($table['name'])) {
webmaster@1	3180 $schema[$name]['name'] = $name;
webmaster@1	3181 }
webmaster@1	3182 }
webmaster@1	3183 }
webmaster@1	3184
webmaster@1	3185 /**
webmaster@1	3186 * Retrieve a list of fields from a table schema. The list is suitable for use in a SQL query.
webmaster@1	3187 *
webmaster@1	3188 * @param $table
webmaster@1	3189 * The name of the table from which to retrieve fields.
webmaster@1	3190 * @param
webmaster@1	3191 * An optional prefix to to all fields.
webmaster@1	3192 *
webmaster@1	3193 * @return An array of fields.
webmaster@1	3194 **/
webmaster@1	3195 function drupal_schema_fields_sql($table, $prefix = NULL) {
webmaster@1	3196 $schema = drupal_get_schema($table);
webmaster@1	3197 $fields = array_keys($schema['fields']);
webmaster@1	3198 if ($prefix) {
webmaster@1	3199 $columns = array();
webmaster@1	3200 foreach ($fields as $field) {
webmaster@1	3201 $columns[] = "$prefix.$field";
webmaster@1	3202 }
webmaster@1	3203 return $columns;
webmaster@1	3204 }
webmaster@1	3205 else {
webmaster@1	3206 return $fields;
webmaster@1	3207 }
webmaster@1	3208 }
webmaster@1	3209
webmaster@1	3210 /**
webmaster@1	3211 * Save a record to the database based upon the schema.
webmaster@1	3212 *
webmaster@1	3213 * Default values are filled in for missing items, and 'serial' (auto increment)
webmaster@1	3214 * types are filled in with IDs.
webmaster@1	3215 *
webmaster@1	3216 * @param $table
webmaster@1	3217 * The name of the table; this must exist in schema API.
webmaster@1	3218 * @param $object
webmaster@1	3219 * The object to write. This is a reference, as defaults according to
webmaster@1	3220 * the schema may be filled in on the object, as well as ID on the serial
webmaster@1	3221 * type(s). Both array an object types may be passed.
webmaster@1	3222 * @param $update
webmaster@1	3223 * If this is an update, specify the primary keys' field names. It is the
webmaster@1	3224 * caller's responsibility to know if a record for this object already
webmaster@1	3225 * exists in the database. If there is only 1 key, you may pass a simple string.
webmaster@1	3226 * @return
webmaster@1	3227 * Failure to write a record will return FALSE. Otherwise SAVED_NEW or
webmaster@1	3228 * SAVED_UPDATED is returned depending on the operation performed. The
webmaster@1	3229 * $object parameter contains values for any serial fields defined by
webmaster@1	3230 * the $table. For example, $object->nid will be populated after inserting
webmaster@1	3231 * a new node.
webmaster@1	3232 */
webmaster@1	3233 function drupal_write_record($table, &$object, $update = array()) {
webmaster@1	3234 // Standardize $update to an array.
webmaster@1	3235 if (is_string($update)) {
webmaster@1	3236 $update = array($update);
webmaster@1	3237 }
webmaster@1	3238
webmaster@1	3239 // Convert to an object if needed.
webmaster@1	3240 if (is_array($object)) {
webmaster@1	3241 $object = (object) $object;
webmaster@1	3242 $array = TRUE;
webmaster@1	3243 }
webmaster@1	3244 else {
webmaster@1	3245 $array = FALSE;
webmaster@1	3246 }
webmaster@1	3247
webmaster@1	3248 $schema = drupal_get_schema($table);
webmaster@1	3249 if (empty($schema)) {
webmaster@1	3250 return FALSE;
webmaster@1	3251 }
webmaster@1	3252
webmaster@1	3253 $fields = $defs = $values = $serials = $placeholders = array();
webmaster@1	3254
webmaster@1	3255 // Go through our schema, build SQL, and when inserting, fill in defaults for
webmaster@1	3256 // fields that are not set.
webmaster@1	3257 foreach ($schema['fields'] as $field => $info) {
webmaster@1	3258 // Special case -- skip serial types if we are updating.
webmaster@1	3259 if ($info['type'] == 'serial' && count($update)) {
webmaster@1	3260 continue;
webmaster@1	3261 }
webmaster@1	3262
webmaster@1	3263 // For inserts, populate defaults from Schema if not already provided
webmaster@1	3264 if (!isset($object->$field) && !count($update) && isset($info['default'])) {
webmaster@1	3265 $object->$field = $info['default'];
webmaster@1	3266 }
webmaster@1	3267
webmaster@1	3268 // Track serial fields so we can helpfully populate them after the query.
webmaster@1	3269 if ($info['type'] == 'serial') {
webmaster@1	3270 $serials[] = $field;
webmaster@1	3271 // Ignore values for serials when inserting data. Unsupported.
webmaster@1	3272 unset($object->$field);
webmaster@1	3273 }
webmaster@1	3274
webmaster@1	3275 // Build arrays for the fields, placeholders, and values in our query.
webmaster@1	3276 if (isset($object->$field)) {
webmaster@1	3277 $fields[] = $field;
webmaster@1	3278 $placeholders[] = db_type_placeholder($info['type']);
webmaster@1	3279
webmaster@1	3280 if (empty($info['serialize'])) {
webmaster@1	3281 $values[] = $object->$field;
webmaster@1	3282 }
webmaster@1	3283 else {
webmaster@1	3284 $values[] = serialize($object->$field);
webmaster@1	3285 }
webmaster@1	3286 }
webmaster@1	3287 }
webmaster@1	3288
webmaster@1	3289 // Build the SQL.
webmaster@1	3290 $query = '';
webmaster@1	3291 if (!count($update)) {
webmaster@1	3292 $query = "INSERT INTO {". $table ."} (". implode(', ', $fields) .') VALUES ('. implode(', ', $placeholders) .')';
webmaster@1	3293 $return = SAVED_NEW;
webmaster@1	3294 }
webmaster@1	3295 else {
webmaster@1	3296 $query = '';
webmaster@1	3297 foreach ($fields as $id => $field) {
webmaster@1	3298 if ($query) {
webmaster@1	3299 $query .= ', ';
webmaster@1	3300 }
webmaster@1	3301 $query .= $field .' = '. $placeholders[$id];
webmaster@1	3302 }
webmaster@1	3303
webmaster@1	3304 foreach ($update as $key){
webmaster@1	3305 $conditions[] = "$key = ". db_type_placeholder($schema['fields'][$key]['type']);
webmaster@1	3306 $values[] = $object->$key;
webmaster@1	3307 }
webmaster@1	3308
webmaster@1	3309 $query = "UPDATE {". $table ."} SET $query WHERE ". implode(' AND ', $conditions);
webmaster@1	3310 $return = SAVED_UPDATED;
webmaster@1	3311 }
webmaster@1	3312
webmaster@1	3313 // Execute the SQL.
webmaster@1	3314 if (db_query($query, $values)) {
webmaster@1	3315 if ($serials) {
webmaster@1	3316 // Get last insert ids and fill them in.
webmaster@1	3317 foreach ($serials as $field) {
webmaster@1	3318 $object->$field = db_last_insert_id($table, $field);
webmaster@1	3319 }
webmaster@1	3320 }
webmaster@1	3321
webmaster@1	3322 // If we began with an array, convert back so we don't surprise the caller.
webmaster@1	3323 if ($array) {
webmaster@1	3324 $object = (array) $object;
webmaster@1	3325 }
webmaster@1	3326
webmaster@1	3327 return $return;
webmaster@1	3328 }
webmaster@1	3329
webmaster@1	3330 return FALSE;
webmaster@1	3331 }
webmaster@1	3332
webmaster@1	3333 /**
webmaster@1	3334 * @} End of "ingroup schemaapi".
webmaster@1	3335 */
webmaster@1	3336
webmaster@1	3337 /**
webmaster@1	3338 * Parse Drupal info file format.
webmaster@1	3339 *
webmaster@1	3340 * Files should use an ini-like format to specify values.
webmaster@1	3341 * White-space generally doesn't matter, except inside values.
webmaster@1	3342 * e.g.
webmaster@1	3343 *
webmaster@1	3344 * @verbatim
webmaster@1	3345 * key = value
webmaster@1	3346 * key = "value"
webmaster@1	3347 * key = 'value'
webmaster@1	3348 * key = "multi-line
webmaster@1	3349 *
webmaster@1	3350 * value"
webmaster@1	3351 * key = 'multi-line
webmaster@1	3352 *
webmaster@1	3353 * value'
webmaster@1	3354 * key
webmaster@1	3355 * =
webmaster@1	3356 * 'value'
webmaster@1	3357 * @endverbatim
webmaster@1	3358 *
webmaster@1	3359 * Arrays are created using a GET-like syntax:
webmaster@1	3360 *
webmaster@1	3361 * @verbatim
webmaster@1	3362 * key[] = "numeric array"
webmaster@1	3363 * key[index] = "associative array"
webmaster@1	3364 * key[index][] = "nested numeric array"
webmaster@1	3365 * key[index][index] = "nested associative array"
webmaster@1	3366 * @endverbatim
webmaster@1	3367 *
webmaster@1	3368 * PHP constants are substituted in, but only when used as the entire value:
webmaster@1	3369 *
webmaster@1	3370 * Comments should start with a semi-colon at the beginning of a line.
webmaster@1	3371 *
webmaster@1	3372 * This function is NOT for placing arbitrary module-specific settings. Use
webmaster@1	3373 * variable_get() and variable_set() for that.
webmaster@1	3374 *
webmaster@1	3375 * Information stored in the module.info file:
webmaster@1	3376 * - name: The real name of the module for display purposes.
webmaster@1	3377 * - description: A brief description of the module.
webmaster@1	3378 * - dependencies: An array of shortnames of other modules this module depends on.
webmaster@1	3379 * - package: The name of the package of modules this module belongs to.
webmaster@1	3380 *
webmaster@1	3381 * Example of .info file:
webmaster@1	3382 * @verbatim
webmaster@1	3383 * name = Forum
webmaster@1	3384 * description = Enables threaded discussions about general topics.
webmaster@1	3385 * dependencies[] = taxonomy
webmaster@1	3386 * dependencies[] = comment
webmaster@1	3387 * package = Core - optional
webmaster@1	3388 * version = VERSION
webmaster@1	3389 * @endverbatim
webmaster@1	3390 *
webmaster@1	3391 * @param $filename
webmaster@1	3392 * The file we are parsing. Accepts file with relative or absolute path.
webmaster@1	3393 * @return
webmaster@1	3394 * The info array.
webmaster@1	3395 */
webmaster@1	3396 function drupal_parse_info_file($filename) {
webmaster@1	3397 $info = array();
webmaster@1	3398
webmaster@1	3399 if (!file_exists($filename)) {
webmaster@1	3400 return $info;
webmaster@1	3401 }
webmaster@1	3402
webmaster@1	3403 $data = file_get_contents($filename);
webmaster@1	3404 if (preg_match_all('
webmaster@1	3405 @^\s* # Start at the beginning of a line, ignoring leading whitespace
webmaster@1	3406 ((?:
webmaster@1	3407 [^=;\[\]]\| # Key names cannot contain equal signs, semi-colons or square brackets,
webmaster@1	3408 \[[^\[\]]*\] # unless they are balanced and not nested
webmaster@1	3409 )+?)
webmaster@1	3410 \s=\s # Key/value pairs are separated by equal signs (ignoring white-space)
webmaster@1	3411 (?:
webmaster@1	3412 ("(?:[^"]\|(?<=\\\\)")*")\| # Double-quoted string, which may contain slash-escaped quotes/slashes
webmaster@1	3413 (\'(?:[^\']\|(?<=\\\\)\')*\')\| # Single-quoted string, which may contain slash-escaped quotes/slashes
webmaster@1	3414 ([^\r\n]*?) # Non-quoted string
webmaster@1	3415 )\s*$ # Stop at the next end of a line, ignoring trailing whitespace
webmaster@1	3416 @msx', $data, $matches, PREG_SET_ORDER)) {
webmaster@1	3417 foreach ($matches as $match) {
webmaster@1	3418 // Fetch the key and value string
webmaster@1	3419 $i = 0;
webmaster@1	3420 foreach (array('key', 'value1', 'value2', 'value3') as $var) {
webmaster@1	3421 $$var = isset($match[++$i]) ? $match[$i] : '';
webmaster@1	3422 }
webmaster@1	3423 $value = stripslashes(substr($value1, 1, -1)) . stripslashes(substr($value2, 1, -1)) . $value3;
webmaster@1	3424
webmaster@1	3425 // Parse array syntax
webmaster@1	3426 $keys = preg_split('/\]?\[/', rtrim($key, ']'));
webmaster@1	3427 $last = array_pop($keys);
webmaster@1	3428 $parent = &$info;
webmaster@1	3429
webmaster@1	3430 // Create nested arrays
webmaster@1	3431 foreach ($keys as $key) {
webmaster@1	3432 if ($key == '') {
webmaster@1	3433 $key = count($parent);
webmaster@1	3434 }
webmaster@1	3435 if (!isset($parent[$key]) \|\| !is_array($parent[$key])) {
webmaster@1	3436 $parent[$key] = array();
webmaster@1	3437 }
webmaster@1	3438 $parent = &$parent[$key];
webmaster@1	3439 }
webmaster@1	3440
webmaster@1	3441 // Handle PHP constants
webmaster@1	3442 if (defined($value)) {
webmaster@1	3443 $value = constant($value);
webmaster@1	3444 }
webmaster@1	3445
webmaster@1	3446 // Insert actual value
webmaster@1	3447 if ($last == '') {
webmaster@1	3448 $last = count($parent);
webmaster@1	3449 }
webmaster@1	3450 $parent[$last] = $value;
webmaster@1	3451 }
webmaster@1	3452 }
webmaster@1	3453
webmaster@1	3454 return $info;
webmaster@1	3455 }
webmaster@1	3456
webmaster@1	3457 /**
webmaster@1	3458 * @return
webmaster@1	3459 * Array of the possible severity levels for log messages.
webmaster@1	3460 *
webmaster@1	3461 * @see watchdog
webmaster@1	3462 */
webmaster@1	3463 function watchdog_severity_levels() {
webmaster@1	3464 return array(
webmaster@1	3465 WATCHDOG_EMERG => t('emergency'),
webmaster@1	3466 WATCHDOG_ALERT => t('alert'),
webmaster@1	3467 WATCHDOG_CRITICAL => t('critical'),
webmaster@1	3468 WATCHDOG_ERROR => t('error'),
webmaster@1	3469 WATCHDOG_WARNING => t('warning'),
webmaster@1	3470 WATCHDOG_NOTICE => t('notice'),
webmaster@1	3471 WATCHDOG_INFO => t('info'),
webmaster@1	3472 WATCHDOG_DEBUG => t('debug'),
webmaster@1	3473 );
webmaster@1	3474 }
webmaster@1	3475
webmaster@1	3476
webmaster@1	3477 /**
webmaster@1	3478 * Explode a string of given tags into an array.
webmaster@1	3479 */
webmaster@1	3480 function drupal_explode_tags($tags) {
webmaster@1	3481 // This regexp allows the following types of user input:
webmaster@1	3482 // this, "somecompany, llc", "and ""this"" w,o.rks", foo bar
webmaster@1	3483 $regexp = '%(?:^\|,\ )("(?>[^"])(?>""[^"]* )"\|(?: [^",]))%x';
webmaster@1	3484 preg_match_all($regexp, $tags, $matches);
webmaster@1	3485 $typed_tags = array_unique($matches[1]);
webmaster@1	3486
webmaster@1	3487 $tags = array();
webmaster@1	3488 foreach ($typed_tags as $tag) {
webmaster@1	3489 // If a user has escaped a term (to demonstrate that it is a group,
webmaster@1	3490 // or includes a comma or quote character), we remove the escape
webmaster@1	3491 // formatting so to save the term into the database as the user intends.
webmaster@1	3492 $tag = trim(str_replace('""', '"', preg_replace('/^"(.*)"$/', '\1', $tag)));
webmaster@1	3493 if ($tag != "") {
webmaster@1	3494 $tags[] = $tag;
webmaster@1	3495 }
webmaster@1	3496 }
webmaster@1	3497
webmaster@1	3498 return $tags;
webmaster@1	3499 }
webmaster@1	3500
webmaster@1	3501 /**
webmaster@1	3502 * Implode an array of tags into a string.
webmaster@1	3503 */
webmaster@1	3504 function drupal_implode_tags($tags) {
webmaster@1	3505 $encoded_tags = array();
webmaster@1	3506 foreach ($tags as $tag) {
webmaster@1	3507 // Commas and quotes in tag names are special cases, so encode them.
webmaster@1	3508 if (strpos($tag, ',') !== FALSE \|\| strpos($tag, '"') !== FALSE) {
webmaster@1	3509 $tag = '"'. str_replace('"', '""', $tag) .'"';
webmaster@1	3510 }
webmaster@1	3511
webmaster@1	3512 $encoded_tags[] = $tag;
webmaster@1	3513 }
webmaster@1	3514 return implode(', ', $encoded_tags);
webmaster@1	3515 }
webmaster@1	3516
webmaster@1	3517 /**
webmaster@1	3518 * Flush all cached data on the site.
webmaster@1	3519 *
webmaster@1	3520 * Empties cache tables, rebuilds the menu cache and theme registries, and
webmaster@1	3521 * exposes a hook for other modules to clear their own cache data as well.
webmaster@1	3522 */
webmaster@1	3523 function drupal_flush_all_caches() {
webmaster@1	3524 // Change query-strings on css/js files to enforce reload for all users.
webmaster@1	3525 _drupal_flush_css_js();
webmaster@1	3526
webmaster@1	3527 drupal_clear_css_cache();
webmaster@1	3528 drupal_clear_js_cache();
webmaster@1	3529 drupal_rebuild_theme_registry();
webmaster@1	3530 menu_rebuild();
webmaster@1	3531 node_types_rebuild();
webmaster@1	3532 // Don't clear cache_form - in-progress form submissions may break.
webmaster@1	3533 // Ordered so clearing the page cache will always be the last action.
webmaster@1	3534 $core = array('cache', 'cache_block', 'cache_filter', 'cache_page');
webmaster@1	3535 $cache_tables = array_merge(module_invoke_all('flush_caches'), $core);
webmaster@1	3536 foreach ($cache_tables as $table) {
webmaster@1	3537 cache_clear_all('*', $table, TRUE);
webmaster@1	3538 }
webmaster@1	3539 }
webmaster@1	3540
webmaster@1	3541 /**
webmaster@1	3542 * Helper function to change query-strings on css/js files.
webmaster@1	3543 *
webmaster@1	3544 * Changes the character added to all css/js files as dummy query-string,
webmaster@1	3545 * so that all browsers are forced to reload fresh files. We keep
webmaster@1	3546 * 20 characters history (FIFO) to avoid repeats, but only the first
webmaster@1	3547 * (newest) character is actually used on urls, to keep them short.
webmaster@1	3548 * This is also called from update.php.
webmaster@1	3549 */
webmaster@1	3550 function _drupal_flush_css_js() {
webmaster@1	3551 $string_history = variable_get('css_js_query_string', '00000000000000000000');
webmaster@1	3552 $new_character = $string_history[0];
webmaster@1	3553 $characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
webmaster@1	3554 while (strpos($string_history, $new_character) !== FALSE) {
webmaster@1	3555 $new_character = $characters[mt_rand(0, strlen($characters) - 1)];
webmaster@1	3556 }
webmaster@1	3557 variable_set('css_js_query_string', $new_character . substr($string_history, 0, 19));
webmaster@1	3558 }

Mercurial > defr > drupal > core

annotate includes/common.inc @ 1:c1f4ac30525a 6.0