78 lines
2.0 KiB
PHP
78 lines
2.0 KiB
PHP
<?php
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// $Id$
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// initialize modules:
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function module_init() {
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// Note: changing this also requires changing system_admin() @ modules/system.module.
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require_once "modules/admin.module";
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require_once "modules/user.module";
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require_once "modules/system.module";
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require_once "modules/watchdog.module";
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module_list();
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module_invoke_all("init");
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}
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// apply function $function to every known module:
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function module_iterate($function, $argument = "") {
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foreach (module_list() as $name) {
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$function($name, $argument);
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}
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}
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// invoke hook $hook of module $name with optional arguments:
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function module_invoke($name, $hook, $a1 = NULL, $a2 = NULL, $a3 = NULL, $a4 = NULL) {
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$function = $name ."_". $hook;
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if (function_exists($function)) {
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return $function($a1, $a2, $a3, $a4);
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}
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}
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// invoke $hook for all appropriate modules:
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function module_invoke_all($hook, $a1 = NULL, $a2 = NULL, $a3 = NULL, $a4 = NULL) {
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$return = array();
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foreach (module_list() as $name) {
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$result = module_invoke($name, $hook, $a1, $a2, $a3, $a4);
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if (isset($result)) {
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$return = array_merge($return, $result);
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}
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}
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return $return;
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}
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// return array of module names (includes lazy module loading):
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function module_list($refresh = 0) {
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static $list;
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if ($refresh) {
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unset($list);
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}
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if (!$list) {
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$list = array("system" => "system", "user" => "user", "watchdog" => "watchdog");
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$result = db_query("SELECT name, filename FROM system WHERE type = 'module' AND status = '1' ORDER BY name");
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while ($module = db_fetch_object($result)) {
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if (file_exists($module->filename)) {
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$list[$module->name] = $module->name;
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include_once $module->filename;
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}
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}
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natcasesort($list);
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}
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return $list;
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}
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// return 1 if module $name exists, 0 otherwise:
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function module_exist($name) {
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$list = module_list();
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return isset($list[$name]) ? 1 : 0;
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}
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// return 1 if module $name implements hook $hook, 0 otherwise:
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function module_hook($name, $hook) {
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return function_exists($name ."_". $hook);
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}
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?>
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