| 1 |
<?php
|
| 2 |
// $Id: module.inc,v 1.165 2009/11/05 16:19:25 webchick Exp $
|
| 3 |
|
| 4 |
/**
|
| 5 |
* @file
|
| 6 |
* API for loading and interacting with Drupal modules.
|
| 7 |
*/
|
| 8 |
|
| 9 |
/**
|
| 10 |
* Load all the modules that have been enabled in the system table.
|
| 11 |
*
|
| 12 |
* @param $bootstrap
|
| 13 |
* Whether to load only the reduced set of modules loaded in "bootstrap mode"
|
| 14 |
* for cached pages. See bootstrap.inc.
|
| 15 |
* @return
|
| 16 |
* If $bootstrap is NULL, return a boolean indicating whether all modules
|
| 17 |
* have been loaded.
|
| 18 |
*/
|
| 19 |
function module_load_all($bootstrap = FALSE) {
|
| 20 |
static $has_run = FALSE;
|
| 21 |
|
| 22 |
if (isset($bootstrap)) {
|
| 23 |
foreach (module_list(TRUE, $bootstrap) as $module) {
|
| 24 |
drupal_load('module', $module);
|
| 25 |
}
|
| 26 |
// $has_run will be TRUE if $bootstrap is FALSE.
|
| 27 |
$has_run = !$bootstrap;
|
| 28 |
}
|
| 29 |
return $has_run;
|
| 30 |
}
|
| 31 |
|
| 32 |
|
| 33 |
/**
|
| 34 |
* Collect a list of all loaded modules. During the bootstrap, return only
|
| 35 |
* vital modules. See bootstrap.inc
|
| 36 |
*
|
| 37 |
* @param $refresh
|
| 38 |
* Whether to force the module list to be regenerated (such as after the
|
| 39 |
* administrator has changed the system settings).
|
| 40 |
* @param $bootstrap
|
| 41 |
* Whether to return the reduced set of modules loaded in "bootstrap mode"
|
| 42 |
* for cached pages. See bootstrap.inc.
|
| 43 |
* @param $sort
|
| 44 |
* By default, modules are ordered by weight and module name. Set this option
|
| 45 |
* to TRUE to return a module list ordered only by module name.
|
| 46 |
* @param $fixed_list
|
| 47 |
* (Optional) Override the module list with the given modules. Stays until the
|
| 48 |
* next call with $refresh = TRUE.
|
| 49 |
* @return
|
| 50 |
* An associative array whose keys and values are the names of all loaded
|
| 51 |
* modules.
|
| 52 |
*/
|
| 53 |
function module_list($refresh = FALSE, $bootstrap = FALSE, $sort = FALSE, $fixed_list = NULL) {
|
| 54 |
static $list = array(), $sorted_list;
|
| 55 |
|
| 56 |
if (empty($list) || $refresh || $fixed_list) {
|
| 57 |
$list = array();
|
| 58 |
$sorted_list = NULL;
|
| 59 |
if ($fixed_list) {
|
| 60 |
foreach ($fixed_list as $name => $module) {
|
| 61 |
drupal_get_filename('module', $name, $module['filename']);
|
| 62 |
$list[$name] = $name;
|
| 63 |
}
|
| 64 |
}
|
| 65 |
else {
|
| 66 |
// The module name (rather than the filename) is used as the fallback
|
| 67 |
// weighting in order to guarantee consistent behavior across different
|
| 68 |
// Drupal installations, which might have modules installed in different
|
| 69 |
// locations in the file system. The ordering here must also be
|
| 70 |
// consistent with the one used in module_implements().
|
| 71 |
if ($bootstrap) {
|
| 72 |
$list = system_list('bootstrap');
|
| 73 |
}
|
| 74 |
else {
|
| 75 |
$list = system_list('module');
|
| 76 |
}
|
| 77 |
}
|
| 78 |
}
|
| 79 |
if ($sort) {
|
| 80 |
if (!isset($sorted_list)) {
|
| 81 |
$sorted_list = $list;
|
| 82 |
ksort($sorted_list);
|
| 83 |
}
|
| 84 |
return $sorted_list;
|
| 85 |
}
|
| 86 |
return $list;
|
| 87 |
}
|
| 88 |
|
| 89 |
/**
|
| 90 |
* Build a list of bootstrap modules and enabled modules and themes.
|
| 91 |
*
|
| 92 |
* @param $type
|
| 93 |
* The type of list to return, either 'module', 'bootstrap', or 'theme'.
|
| 94 |
*
|
| 95 |
* @return
|
| 96 |
* An associative array of modules or themes, keyed by name, with the minimum
|
| 97 |
* data required to bootstrap.
|
| 98 |
*
|
| 99 |
* @see module_list()
|
| 100 |
* @see list_themes()
|
| 101 |
*/
|
| 102 |
function system_list($type) {
|
| 103 |
$lists = &drupal_static(__FUNCTION__);
|
| 104 |
|
| 105 |
if (!isset($lists)) {
|
| 106 |
$lists = array('bootstrap' => array(), 'module' => array(), 'theme' => array());
|
| 107 |
$result = db_query("SELECT * FROM {system} WHERE status = 1 ORDER BY weight ASC, name ASC");
|
| 108 |
foreach ($result as $record) {
|
| 109 |
// Build a list of all enabled modules.
|
| 110 |
if ($record->type == 'module') {
|
| 111 |
$lists['module'][$record->name] = $record->name;
|
| 112 |
// Build a separate array of modules required for bootstrap.
|
| 113 |
if ($record->bootstrap) {
|
| 114 |
$lists['bootstrap'][$record->name] = $record->name;
|
| 115 |
}
|
| 116 |
}
|
| 117 |
// Build a list of enabled themes.
|
| 118 |
if ($record->type == 'theme') {
|
| 119 |
$lists['theme'][$record->name] = $record;
|
| 120 |
}
|
| 121 |
|
| 122 |
// Additionally prime drupal_get_filename() with the filename and type
|
| 123 |
// for each record, this prevents subsequent database lookups when
|
| 124 |
// drupal_get_filename() is called without the 'file' argument.
|
| 125 |
drupal_get_filename($record->type, $record->name, $record->filename);
|
| 126 |
}
|
| 127 |
}
|
| 128 |
|
| 129 |
return $lists[$type];
|
| 130 |
}
|
| 131 |
|
| 132 |
/**
|
| 133 |
* Find dependencies any level deep and fill in required by information too.
|
| 134 |
*
|
| 135 |
* @param $files
|
| 136 |
* The array of filesystem objects used to rebuild the cache.
|
| 137 |
* @return
|
| 138 |
* The same array with the new keys for each module:
|
| 139 |
* - requires: An array with the keys being the modules that this module
|
| 140 |
* requires.
|
| 141 |
* - required_by: An array with the keys being the modules that will not work
|
| 142 |
* without this module.
|
| 143 |
*/
|
| 144 |
function _module_build_dependencies($files) {
|
| 145 |
require_once DRUPAL_ROOT . '/includes/graph.inc';
|
| 146 |
$roots = $files;
|
| 147 |
foreach ($files as $filename => $file) {
|
| 148 |
$graph[$file->name]['edges'] = array();
|
| 149 |
if (isset($file->info['dependencies']) && is_array($file->info['dependencies'])) {
|
| 150 |
foreach ($file->info['dependencies'] as $dependency) {
|
| 151 |
$dependency_data = drupal_parse_dependency($dependency);
|
| 152 |
$graph[$file->name]['edges'][$dependency_data['name']] = $dependency_data;
|
| 153 |
unset($roots[$dependency_data['name']]);
|
| 154 |
}
|
| 155 |
}
|
| 156 |
}
|
| 157 |
drupal_depth_first_search($graph, array_keys($roots));
|
| 158 |
foreach ($graph as $module => $data) {
|
| 159 |
$files[$module]->required_by = isset($data['reverse_paths']) ? $data['reverse_paths'] : array();
|
| 160 |
$files[$module]->requires = isset($data['paths']) ? $data['paths'] : array();
|
| 161 |
$files[$module]->sort = $data['weight'];
|
| 162 |
}
|
| 163 |
return $files;
|
| 164 |
}
|
| 165 |
|
| 166 |
/**
|
| 167 |
* Determine whether a given module exists.
|
| 168 |
*
|
| 169 |
* @param $module
|
| 170 |
* The name of the module (without the .module extension).
|
| 171 |
* @return
|
| 172 |
* TRUE if the module is both installed and enabled.
|
| 173 |
*/
|
| 174 |
function module_exists($module) {
|
| 175 |
$list = module_list();
|
| 176 |
return isset($list[$module]);
|
| 177 |
}
|
| 178 |
|
| 179 |
/**
|
| 180 |
* Load a module's installation hooks.
|
| 181 |
*/
|
| 182 |
function module_load_install($module) {
|
| 183 |
// Make sure the installation API is available
|
| 184 |
include_once DRUPAL_ROOT . '/includes/install.inc';
|
| 185 |
|
| 186 |
module_load_include('install', $module);
|
| 187 |
}
|
| 188 |
|
| 189 |
/**
|
| 190 |
* Load a module include file.
|
| 191 |
*
|
| 192 |
* Examples:
|
| 193 |
* @code
|
| 194 |
* // Load node.admin.inc from the node module.
|
| 195 |
* module_load_include('inc', 'node', 'node.admin');
|
| 196 |
* // Load content_types.inc from the node module.
|
| 197 |
* module_load_include('inc', 'node', 'content_types');
|
| 198 |
* @endcode
|
| 199 |
*
|
| 200 |
* Do not use this function to load an install file. Use module_load_install()
|
| 201 |
* instead.
|
| 202 |
*
|
| 203 |
* @param $type
|
| 204 |
* The include file's type (file extension).
|
| 205 |
* @param $module
|
| 206 |
* The module to which the include file belongs.
|
| 207 |
* @param $name
|
| 208 |
* Optionally, specify the base file name (without the $type extension).
|
| 209 |
* If not set, $module is used.
|
| 210 |
*/
|
| 211 |
function module_load_include($type, $module, $name = NULL) {
|
| 212 |
if (empty($name)) {
|
| 213 |
$name = $module;
|
| 214 |
}
|
| 215 |
|
| 216 |
if (function_exists('drupal_get_path')) {
|
| 217 |
$file = DRUPAL_ROOT . '/' . drupal_get_path('module', $module) . "/$name.$type";
|
| 218 |
if (is_file($file)) {
|
| 219 |
require_once $file;
|
| 220 |
return $file;
|
| 221 |
}
|
| 222 |
}
|
| 223 |
return FALSE;
|
| 224 |
}
|
| 225 |
|
| 226 |
/**
|
| 227 |
* Load an include file for each of the modules that have been enabled in
|
| 228 |
* the system table.
|
| 229 |
*/
|
| 230 |
function module_load_all_includes($type, $name = NULL) {
|
| 231 |
$modules = module_list();
|
| 232 |
foreach ($modules as $module) {
|
| 233 |
module_load_include($type, $module, $name);
|
| 234 |
}
|
| 235 |
}
|
| 236 |
|
| 237 |
/**
|
| 238 |
* Enable a given list of modules.
|
| 239 |
*
|
| 240 |
* @param $module_list
|
| 241 |
* An array of module names.
|
| 242 |
* @param $disable_modules_installed_hook
|
| 243 |
* Normally just testing wants to set this to TRUE.
|
| 244 |
*/
|
| 245 |
function module_enable($module_list, $disable_modules_installed_hook = FALSE) {
|
| 246 |
$invoke_modules = array();
|
| 247 |
|
| 248 |
// Try to install the enabled modules and collect which were installed.
|
| 249 |
// $module_list is not changed and already installed modules are ignored.
|
| 250 |
$modules_installed = array_filter($module_list, '_drupal_install_module');
|
| 251 |
foreach ($module_list as $module) {
|
| 252 |
$existing = db_query("SELECT status FROM {system} WHERE type = :type AND name = :name", array(
|
| 253 |
':type' => 'module',
|
| 254 |
':name' => $module))
|
| 255 |
->fetchObject();
|
| 256 |
if ($existing->status == 0) {
|
| 257 |
module_load_install($module);
|
| 258 |
db_update('system')
|
| 259 |
->fields(array('status' => 1))
|
| 260 |
->condition('type', 'module')
|
| 261 |
->condition('name', $module)
|
| 262 |
->execute();
|
| 263 |
drupal_load('module', $module);
|
| 264 |
$invoke_modules[] = $module;
|
| 265 |
watchdog('system', '%module module enabled.', array('%module' => $module), WATCHDOG_INFO);
|
| 266 |
}
|
| 267 |
}
|
| 268 |
|
| 269 |
if (!empty($invoke_modules)) {
|
| 270 |
// Refresh the module list to exclude the disabled modules.
|
| 271 |
drupal_static_reset('system_list');
|
| 272 |
module_list(TRUE);
|
| 273 |
module_implements('', FALSE, TRUE);
|
| 274 |
// Force to regenerate the stored list of hook implementations.
|
| 275 |
registry_rebuild();
|
| 276 |
// Refresh the schema to include the new enabled module.
|
| 277 |
drupal_get_schema(NULL, TRUE);
|
| 278 |
|
| 279 |
// If any modules were newly installed, execute the hook for them.
|
| 280 |
if (!$disable_modules_installed_hook && !empty($modules_installed)) {
|
| 281 |
module_invoke_all('modules_installed', $modules_installed);
|
| 282 |
}
|
| 283 |
}
|
| 284 |
|
| 285 |
foreach ($invoke_modules as $module) {
|
| 286 |
module_invoke($module, 'enable');
|
| 287 |
// Check if node_access table needs rebuilding.
|
| 288 |
// We check for the existence of node_access_needs_rebuild() since
|
| 289 |
// at install time, module_enable() could be called while node.module
|
| 290 |
// is not enabled yet.
|
| 291 |
if (function_exists('node_access_needs_rebuild') && !node_access_needs_rebuild() && module_hook($module, 'node_grants')) {
|
| 292 |
node_access_needs_rebuild(TRUE);
|
| 293 |
}
|
| 294 |
}
|
| 295 |
|
| 296 |
if (!empty($invoke_modules)) {
|
| 297 |
// Invoke hook_modules_enabled after all the modules have been
|
| 298 |
// enabled.
|
| 299 |
module_invoke_all('modules_enabled', $invoke_modules);
|
| 300 |
}
|
| 301 |
}
|
| 302 |
|
| 303 |
/**
|
| 304 |
* Disable a given set of modules.
|
| 305 |
*
|
| 306 |
* @param $module_list
|
| 307 |
* An array of module names.
|
| 308 |
*/
|
| 309 |
function module_disable($module_list) {
|
| 310 |
$invoke_modules = array();
|
| 311 |
foreach ($module_list as $module) {
|
| 312 |
if (module_exists($module)) {
|
| 313 |
// Check if node_access table needs rebuilding.
|
| 314 |
if (!node_access_needs_rebuild() && module_hook($module, 'node_grants')) {
|
| 315 |
node_access_needs_rebuild(TRUE);
|
| 316 |
}
|
| 317 |
|
| 318 |
module_load_install($module);
|
| 319 |
module_invoke($module, 'disable');
|
| 320 |
db_update('system')
|
| 321 |
->fields(array('status' => 0))
|
| 322 |
->condition('type', 'module')
|
| 323 |
->condition('name', $module)
|
| 324 |
->execute();
|
| 325 |
$invoke_modules[] = $module;
|
| 326 |
watchdog('system', '%module module disabled.', array('%module' => $module), WATCHDOG_INFO);
|
| 327 |
}
|
| 328 |
}
|
| 329 |
|
| 330 |
if (!empty($invoke_modules)) {
|
| 331 |
// Refresh the module list to exclude the disabled modules.
|
| 332 |
drupal_static_reset('system_list');
|
| 333 |
module_list(TRUE);
|
| 334 |
module_implements('', FALSE, TRUE);
|
| 335 |
// Invoke hook_modules_disabled before disabling modules,
|
| 336 |
// so we can still call module hooks to get information.
|
| 337 |
module_invoke_all('modules_disabled', $invoke_modules);
|
| 338 |
// Force to regenerate the stored list of hook implementations.
|
| 339 |
registry_rebuild();
|
| 340 |
}
|
| 341 |
|
| 342 |
// If there remains no more node_access module, rebuilding will be
|
| 343 |
// straightforward, we can do it right now.
|
| 344 |
if (node_access_needs_rebuild() && count(module_implements('node_grants')) == 0) {
|
| 345 |
node_access_rebuild();
|
| 346 |
}
|
| 347 |
}
|
| 348 |
|
| 349 |
/**
|
| 350 |
* @defgroup hooks Hooks
|
| 351 |
* @{
|
| 352 |
* Allow modules to interact with the Drupal core.
|
| 353 |
*
|
| 354 |
* Drupal's module system is based on the concept of "hooks". A hook is a PHP
|
| 355 |
* function that is named foo_bar(), where "foo" is the name of the module (whose
|
| 356 |
* filename is thus foo.module) and "bar" is the name of the hook. Each hook has
|
| 357 |
* a defined set of parameters and a specified result type.
|
| 358 |
*
|
| 359 |
* To extend Drupal, a module need simply implement a hook. When Drupal wishes to
|
| 360 |
* allow intervention from modules, it determines which modules implement a hook
|
| 361 |
* and call that hook in all enabled modules that implement it.
|
| 362 |
*
|
| 363 |
* The available hooks to implement are explained here in the Hooks section of
|
| 364 |
* the developer documentation. The string "hook" is used as a placeholder for
|
| 365 |
* the module name is the hook definitions. For example, if the module file is
|
| 366 |
* called example.module, then hook_help() as implemented by that module would be
|
| 367 |
* defined as example_help().
|
| 368 |
*/
|
| 369 |
|
| 370 |
/**
|
| 371 |
* Determine whether a module implements a hook.
|
| 372 |
*
|
| 373 |
* @param $module
|
| 374 |
* The name of the module (without the .module extension).
|
| 375 |
* @param $hook
|
| 376 |
* The name of the hook (e.g. "help" or "menu").
|
| 377 |
* @return
|
| 378 |
* TRUE if the module is both installed and enabled, and the hook is
|
| 379 |
* implemented in that module.
|
| 380 |
*/
|
| 381 |
function module_hook($module, $hook) {
|
| 382 |
return function_exists($module . '_' . $hook);
|
| 383 |
}
|
| 384 |
|
| 385 |
/**
|
| 386 |
* Determine which modules are implementing a hook.
|
| 387 |
*
|
| 388 |
* @param $hook
|
| 389 |
* The name of the hook (e.g. "help" or "menu").
|
| 390 |
* @param $sort
|
| 391 |
* By default, modules are ordered by weight and filename, settings this option
|
| 392 |
* to TRUE, module list will be ordered by module name.
|
| 393 |
* @param $reset
|
| 394 |
* For internal use only: Whether to force the stored list of hook
|
| 395 |
* implementations to be regenerated (such as after enabling a new module,
|
| 396 |
* before processing hook_enable).
|
| 397 |
*
|
| 398 |
* @return
|
| 399 |
* An array with the names of the modules which are implementing this hook.
|
| 400 |
*
|
| 401 |
* @see module_implements_write_cache().
|
| 402 |
*/
|
| 403 |
function module_implements($hook, $sort = FALSE, $reset = FALSE) {
|
| 404 |
$implementations = &drupal_static(__FUNCTION__, array());
|
| 405 |
|
| 406 |
// We maintain a persistent cache of hook implementations in addition to the
|
| 407 |
// static cache to avoid looping through every module and every hook on each
|
| 408 |
// request. Benchmarks show that the benefit of this caching outweighs the
|
| 409 |
// additional database hit even when using the default database caching
|
| 410 |
// backend and only a small number of modules are enabled. The cost of the
|
| 411 |
// cache_get() is more or less constant and reduced further when non-database
|
| 412 |
// caching backends are used, so there will be more significant gains when a
|
| 413 |
// large number of modules are installed or hooks invoked, since this can
|
| 414 |
// quickly lead to module_hook() being called several thousand times
|
| 415 |
// per request.
|
| 416 |
if ($reset) {
|
| 417 |
$implementations = array();
|
| 418 |
cache_set('module_implements', array());
|
| 419 |
drupal_static_reset('module_hook_info');
|
| 420 |
drupal_static_reset('drupal_alter');
|
| 421 |
cache_clear_all('hook_info', 'cache');
|
| 422 |
return;
|
| 423 |
}
|
| 424 |
|
| 425 |
// Fetch implementations from cache.
|
| 426 |
if (empty($implementations)) {
|
| 427 |
$implementations = cache_get('module_implements');
|
| 428 |
if ($implementations === FALSE) {
|
| 429 |
$implementations = array();
|
| 430 |
}
|
| 431 |
else {
|
| 432 |
$implementations = $implementations->data;
|
| 433 |
}
|
| 434 |
}
|
| 435 |
|
| 436 |
if (!isset($implementations[$hook])) {
|
| 437 |
$hook_info = module_hook_info();
|
| 438 |
$implementations[$hook] = array();
|
| 439 |
$list = module_list(FALSE, FALSE, $sort);
|
| 440 |
foreach ($list as $module) {
|
| 441 |
$include_file = FALSE;
|
| 442 |
if (module_hook($module, $hook) || (isset($hook_info[$hook]['group']) && $include_file = module_load_include('inc', $module, $module . '.' . $hook_info[$hook]['group']) && module_hook($module, $hook))) {
|
| 443 |
$implementations[$hook][$module] = $include_file ? $hook_info[$hook]['group'] : FALSE;
|
| 444 |
// We added something to the cache, so write it when we are done.
|
| 445 |
$implementations['#write_cache'] = TRUE;
|
| 446 |
}
|
| 447 |
}
|
| 448 |
}
|
| 449 |
else {
|
| 450 |
foreach ($implementations[$hook] as $module => $group) {
|
| 451 |
// If this hook implementation is stored in a lazy-loaded file, so include
|
| 452 |
// that file first.
|
| 453 |
if ($group) {
|
| 454 |
module_load_include('inc', $module, "$module.$group");
|
| 455 |
}
|
| 456 |
// It is possible that a module removed a hook implementation without the
|
| 457 |
// implementations cache being rebuilt yet, so we check module_hook() on
|
| 458 |
// each request to avoid undefined function errors.
|
| 459 |
if (!module_hook($module, $hook)) {
|
| 460 |
// Clear out the stale implementation from the cache and force a cache
|
| 461 |
// refresh to forget about no longer existing hook implementations.
|
| 462 |
unset($implementations[$hook][$module]);
|
| 463 |
$implementations['#write_cache'] = TRUE;
|
| 464 |
}
|
| 465 |
}
|
| 466 |
}
|
| 467 |
|
| 468 |
return array_keys($implementations[$hook]);
|
| 469 |
}
|
| 470 |
|
| 471 |
/**
|
| 472 |
* Retrieve a list of what hooks are explicitly declared.
|
| 473 |
*/
|
| 474 |
function module_hook_info() {
|
| 475 |
$hook_info = &drupal_static(__FUNCTION__, array());
|
| 476 |
|
| 477 |
if (empty($hook_info)) {
|
| 478 |
$cache = cache_get('hook_info');
|
| 479 |
if ($cache === FALSE) {
|
| 480 |
// Rebuild the cache and save it.
|
| 481 |
// We can't use module_invoke_all() here or it would cause an infinite
|
| 482 |
// loop.
|
| 483 |
foreach (module_list() as $module) {
|
| 484 |
$function = $module . '_hook_info';
|
| 485 |
if (function_exists($function)) {
|
| 486 |
$result = $function();
|
| 487 |
if (isset($result) && is_array($result)) {
|
| 488 |
$hook_info = array_merge_recursive($hook_info, $result);
|
| 489 |
}
|
| 490 |
}
|
| 491 |
}
|
| 492 |
// We can't use drupal_alter() for the same reason as above.
|
| 493 |
foreach (module_list() as $module) {
|
| 494 |
$function = $module . '_hook_info_alter';
|
| 495 |
if (function_exists($function)) {
|
| 496 |
$function($hook_info);
|
| 497 |
}
|
| 498 |
}
|
| 499 |
cache_set('hook_info', $hook_info);
|
| 500 |
}
|
| 501 |
else {
|
| 502 |
$hook_info = $cache->data;
|
| 503 |
}
|
| 504 |
}
|
| 505 |
|
| 506 |
return $hook_info;
|
| 507 |
}
|
| 508 |
|
| 509 |
/**
|
| 510 |
* Writes the hook implementation cache.
|
| 511 |
*
|
| 512 |
* @see module_implements()
|
| 513 |
*/
|
| 514 |
function module_implements_write_cache() {
|
| 515 |
$implementations = &drupal_static('module_implements');
|
| 516 |
// Check whether we need to write the cache. We do not want to cache hooks
|
| 517 |
// which are only invoked on HTTP POST requests since these do not need to be
|
| 518 |
// optimized as tightly, and not doing so keeps the cache entry smaller.
|
| 519 |
if (isset($implementations['#write_cache']) && ($_SERVER['REQUEST_METHOD'] == 'GET' || $_SERVER['REQUEST_METHOD'] == 'HEAD')) {
|
| 520 |
unset($implementations['#write_cache']);
|
| 521 |
cache_set('module_implements', $implementations);
|
| 522 |
}
|
| 523 |
}
|
| 524 |
|
| 525 |
/**
|
| 526 |
* Invoke a hook in a particular module.
|
| 527 |
*
|
| 528 |
* @param $module
|
| 529 |
* The name of the module (without the .module extension).
|
| 530 |
* @param $hook
|
| 531 |
* The name of the hook to invoke.
|
| 532 |
* @param ...
|
| 533 |
* Arguments to pass to the hook implementation.
|
| 534 |
* @return
|
| 535 |
* The return value of the hook implementation.
|
| 536 |
*/
|
| 537 |
function module_invoke() {
|
| 538 |
$args = func_get_args();
|
| 539 |
$module = $args[0];
|
| 540 |
$hook = $args[1];
|
| 541 |
unset($args[0], $args[1]);
|
| 542 |
if (module_hook($module, $hook)) {
|
| 543 |
return call_user_func_array($module . '_' . $hook, $args);
|
| 544 |
}
|
| 545 |
}
|
| 546 |
/**
|
| 547 |
* Invoke a hook in all enabled modules that implement it.
|
| 548 |
*
|
| 549 |
* @param $hook
|
| 550 |
* The name of the hook to invoke.
|
| 551 |
* @param ...
|
| 552 |
* Arguments to pass to the hook.
|
| 553 |
* @return
|
| 554 |
* An array of return values of the hook implementations. If modules return
|
| 555 |
* arrays from their implementations, those are merged into one array.
|
| 556 |
*/
|
| 557 |
function module_invoke_all() {
|
| 558 |
$args = func_get_args();
|
| 559 |
$hook = $args[0];
|
| 560 |
unset($args[0]);
|
| 561 |
$return = array();
|
| 562 |
foreach (module_implements($hook) as $module) {
|
| 563 |
$function = $module . '_' . $hook;
|
| 564 |
if (function_exists($function)) {
|
| 565 |
$result = call_user_func_array($function, $args);
|
| 566 |
if (isset($result) && is_array($result)) {
|
| 567 |
$return = array_merge_recursive($return, $result);
|
| 568 |
}
|
| 569 |
elseif (isset($result)) {
|
| 570 |
$return[] = $result;
|
| 571 |
}
|
| 572 |
}
|
| 573 |
}
|
| 574 |
|
| 575 |
return $return;
|
| 576 |
}
|
| 577 |
|
| 578 |
/**
|
| 579 |
* @} End of "defgroup hooks".
|
| 580 |
*/
|
| 581 |
|
| 582 |
/**
|
| 583 |
* Array of modules required by core.
|
| 584 |
*/
|
| 585 |
function drupal_required_modules() {
|
| 586 |
$files = drupal_system_listing('/\.info$/', 'modules', 'name', 0);
|
| 587 |
$required = array();
|
| 588 |
|
| 589 |
// An install profile is required and one must always be loaded.
|
| 590 |
$required[] = drupal_get_profile();
|
| 591 |
|
| 592 |
foreach ($files as $name => $file) {
|
| 593 |
$info = drupal_parse_info_file($file->uri);
|
| 594 |
if (!empty($info) && !empty($info['required']) && $info['required']) {
|
| 595 |
$required[] = $name;
|
| 596 |
}
|
| 597 |
}
|
| 598 |
|
| 599 |
return $required;
|
| 600 |
}
|
Parent Directory
| 
Revision Log
| 
Revision Graph