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<?php
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// $Id: reptag_module.inc,v 1.1.2.10 2007/07/25 16:14:31 profix898 Exp $
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define('REPTAG_PROCALL', 0);
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define('REPTAG_PROCSTATIC', 1);
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define('REPTAG_PROCDYNAMIC', 2);
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/**
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* Function _reptag_module_list().
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* (return a list of available modules)
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*/
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function _reptag_module_list($rebuild = FALSE, $enabled = FALSE, $proc = REPTAG_PROCALL, $modules = NULL) {
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$reptag_modules = array();
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// build query and fetch modules
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$query = $rebuild ? 'SELECT module, enabled, weight, roles FROM {reptag_registry}' : 'SELECT * FROM {reptag_registry}';
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if ($enabled) {
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$query .= ' WHERE enabled = 1';
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}
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switch ($proc) {
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case REPTAG_PROCSTATIC:
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$query .= $enabled ? ' AND' : ' WHERE';
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$query .= ' static = 1';
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break;
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case REPTAG_PROCDYNAMIC:
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$query .= $enabled ? ' AND' : ' WHERE';
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$query .= ' static = 0';
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break;
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default:
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}
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$query .= ' ORDER BY weight ASC, module ASC';
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$result = db_query($query);
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while ($module = db_fetch_array($result)) {
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if (!$modules || in_array($module['module'], $modules)) {
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$reptag_modules[$module['module']] = $module;
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$reptag_modules[$module['module']]['roles'] = unserialize($module['roles']);
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}
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}
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// rebuild module registry
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if ($rebuild && !$enabled) {
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$modules_rebuild = _reptag_module_rebuild();
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$reptag_modules = _reptag_array_intersect_key($reptag_modules, $modules_rebuild);
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$reptag_modules = _reptag_array_merge_key($modules_rebuild, $reptag_modules);
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_reptag_module_register($reptag_modules, TRUE);
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uasort($reptag_modules, '_reptag_module_cmp');
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}
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return $reptag_modules;
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}
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/**
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* Function _reptag_module_cmp().
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* (sort modules by weigth and name)
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*/
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function _reptag_module_cmp($a, $b) {
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if ($a['weight'] == $b['weight']) {
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return ($a['module'] == $b['module']) ? 0 : (($a['module'] < $b['module']) ? -1 : 1);
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}
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return ($a['weight'] < $b['weight']) ? -1 : 1;
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}
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/**
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* Function _reptag_module_rebuild().
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* (rebuild the modules list)
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*/
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function _reptag_module_rebuild() {
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$reptag_modules = array();
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// module (.tags)
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$files = file_scan_directory(drupal_get_path('module', 'reptag'), '\.tags.inc$');
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foreach ($files as $file) {
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include_once($file->filename);
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$module = substr($file->name, 0, -5);
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$function = '_reptag_'. $module .'_info';
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if (function_exists($function)) {
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$reptag_info = $function();
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$reptag_modules[$file->name] = array(
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'module' => $module,
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'path' => $file->filename,
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'static' => is_array($reptag_info) ? $reptag_info[1] : FALSE,
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'description' => check_plain(is_array($reptag_info) ? $reptag_info[0] : $reptag_info),
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'enabled' => FALSE,
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'weight' => 0,
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'roles' => array()
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);
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}
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}
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// other modules (hook_reptag)
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$modules = module_implements('reptag');
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foreach ($modules as $module) {
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$reptag_info = module_invoke($module, 'reptag', 'info');
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$reptag_modules[$module] = array(
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'module' => $module,
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'path' => '',
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'static' => is_array($reptag_info) ? $reptag_info[1] : TRUE,
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'description' => check_plain(is_array($reptag_info) ? $reptag_info[0] : $reptag_info),
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'enabled' => FALSE,
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'weight' => 0,
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'roles' => array()
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);
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}
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return $reptag_modules;
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}
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/**
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* Function _reptag_module_register().
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* (register a module / update a module's registry)
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*/
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function _reptag_module_register($modules, $reset = FALSE) {
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db_lock_table('reptag_registry');
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if ($reset) {
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db_query('DELETE FROM {reptag_registry}');
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}
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foreach ($modules as $module => $details) {
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if ($reset) {
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db_query("INSERT INTO {reptag_registry} (module, path, static, description, enabled, weight, roles)
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VALUES ('%s', '%s', %d, '%s', %d, %d, '%s')", $module, $details['path'], $details['static'], $details['description'], $details['enabled'], $details['weight'], serialize($details['roles']));
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}
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else {
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db_query("UPDATE {reptag_registry} SET enabled = %d, weight = %d, roles = '%s' WHERE module = '%s'",
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$details['enabled'], $details['weight'], serialize($details['roles']), $module);
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}
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}
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db_unlock_tables();
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}
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/**
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* Function _reptag_module_reset().
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*/
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function _reptag_module_reset() {
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_reptag_module_register(_reptag_module_rebuild(), TRUE);
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}
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/**
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* Function _reptag_module_invoke().
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*/
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function _reptag_module_invoke() {
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static $modules = array();
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$args = func_get_args();
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$module = array_shift($args);
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$hook = array_shift($args);
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if (!is_array($module)) {
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$module = array(
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'module' => $module,
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'path' => $modules[$module],
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);
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}
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else {
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// include the .tags file once
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if ($module['path'] && !isset($modules[$module['module']])) {
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include_once($module['path']);
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}
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// cache the path
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$modules[$module['module']] = $module['path'];
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}
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// call the module hook
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if (empty($module['path'])) {
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if ($hook != 'process') {
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array_unshift($args, $hook);
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}
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$function = ($hook == 'process') ? 'reptag_process' : 'reptag';
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if (module_hook($module['module'], $function)) {
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return call_user_func_array($module['module'] .'_'. $function, $args);
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}
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}
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else {
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$function = '_reptag_'. substr($module['module'], 0, -5) .'_'. $hook;
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if (function_exists($function)) {
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return call_user_func_array($function, $args);
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}
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}
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return FALSE;
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}
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/**
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* Function _reptag_module_require().
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*/
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function _reptag_module_require($module) {
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if (!empty($module['path'])) {
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include_once($module['path']);
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}
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$require_func = '_reptag_'. substr($module['module'], 0, -5) .'_require';
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if (function_exists($require_func)) {
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return $require_func();
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}
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return TRUE;
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}
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/**
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* Function _reptag_module_access().
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* (filter modules by permissions/roles)
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*/
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function _reptag_module_access($modules, $roles = NULL) {
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global $user;
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if (!$roles) {
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$roles = _reptag_user_get_roles($user->uid);
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}
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foreach ($modules as $module => $details) {
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if (!(array_intersect($details['roles'], $roles) || $user->uid == 1)) {
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unset($modules[$module]);
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}
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}
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return $modules;
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}
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/**
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* Function _reptag_module_tags().
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* (fetch all available tags)
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*/
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function _reptag_module_tags($proc = REPTAG_PROCALL, $roles = NULL, $content = NULL, $modules = NULL) {
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$module_tags = array();
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$modules = _reptag_module_list(FALSE, TRUE, $proc, $modules);
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$modules = _reptag_module_access($modules, $roles);
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foreach ($modules as $module => $details) {
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$module_tags[$module] = _reptag_module_invoke($details, 'init', $content);
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}
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return array_filter($module_tags);
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}
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/**
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* Function _reptag_module_help().
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*/
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function _reptag_module_help($roles = NULL, $modules = NULL) {
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$helptags = array();
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$modules = _reptag_module_list(FALSE, TRUE, REPTAG_PROCALL, $modules);
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$modules = _reptag_module_access($modules, $roles);
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foreach ($modules as $module => $details) {
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$helptags[$module] = _reptag_module_invoke($details, 'help');
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}
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return array_filter($helptags);
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}
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