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<?php
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// $Id: hosting.features.inc,v 1.6 2009/09/14 11:44:33 anarcat Exp $
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/**
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* @file Hosting features
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*
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* Contains the logic used to generate the features list
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*/
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define('HOSTING_FEATURE_DISABLED', 0);
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define('HOSTING_FEATURE_ENABLED', 1);
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define('HOSTING_FEATURE_REQUIRED', 2);
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function hosting_feature($feature) {
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static $features = array();
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if (!sizeof($features)) {
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$features = hosting_get_features();
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}
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if ($features[$feature]['module']) {
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$return = (module_exists($features[$feature]['module'])) ? HOSTING_FEATURE_ENABLED : HOSTING_FEATURE_DISABLED;
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}
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else {
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$return = variable_get('hosting_feature_' . $feature, $features[$feature]['status']);
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}
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return $return;
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}
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function hosting_features_form() {
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$form['features'] = array(
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'#type' => 'item',
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'#title' => t('Optional system features'),
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'#value' => t('You may choose any of the additional system features from the list below.'),
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);
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$experimental = array(
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'#type' => 'fieldset',
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'#title' => t('Experimental'),
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'#collapsed' => TRUE,
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'#collapsible' => TRUE,
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'#description' => t('Features marked experimental have not been completed to a satisfactory level to be considered production ready, so use at your own risk.'),
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);
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$features = hosting_get_features(TRUE);
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foreach ($features as $feature => $info) {
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$element = array(
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'#type' => 'checkbox',
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'#title' => $info['title'],
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'#description' => $info['description'],
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'#default_value' => hosting_feature($feature),
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'#required' => hosting_feature($feature) == HOSTING_FEATURE_REQUIRED,
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);
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if ($info['group'] == 'experimental') {
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$experimental[$feature] = $element;
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}
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else {
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$form[$feature] = $element;
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}
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}
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$form['experimental'] = $experimental;
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$form['#submit'][] = 'hosting_features_form_submit';
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return system_settings_form($form);
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}
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function hosting_features_form_submit($form, &$form_state) {
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$values = $form_state['values'];
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$features = hosting_get_features(TRUE);
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foreach ($features as $feature => $info) {
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$value = $values[$feature];
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$current = hosting_feature($feature);
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variable_set('hosting_feature_' . $feature, $value);
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if ((!$current) && $value) {
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if ($module = $features[$feature]['module']) {
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include_once('includes/install.inc');
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$modules = array($module);
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$files = module_rebuild_cache();
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$file = $files[$module];
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if (isset($file->info['dependencies']) && is_array($file->info['dependencies'])) {
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foreach ($file->info['dependencies'] as $dependency) {
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$modules[] = $dependency;
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}
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}
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// turn on module
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drupal_set_message(t("Enabling %module module", array('%module' => implode(",", $modules))));
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drupal_install_modules($modules);
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module_enable($modules);
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}
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if (function_exists($callback = $features[$feature]['enable'])) {
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$callback();
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}
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}
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if ($current && !$value) {
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$dependencies = array();
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if ($module = $features[$feature]['module']) {
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$modules = array($module);
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$files = module_rebuild_cache();
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foreach ($files as $dependency => $file) {
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if (isset($file->info['dependencies']) && is_array($file->info['dependencies'])) {
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if (in_array($module, $file->info['dependencies']) && $file->status) {
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$dependencies[] = $dependency;
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}
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}
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}
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if ($dependencies) {
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form_set_error('', t("You cannot disable %module because %dep depends on it", array('%module' => $module, '%dep' => implode(',', $dependencies))));
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}
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else {
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drupal_set_message(t("Disabling %module module", array('%module' => implode(",", $modules))));
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// turn off module
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module_disable($modules);
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if (function_exists($callback = $features[$feature]['disable'])) {
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$callback();
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}
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}
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}
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}
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#print("$feature $current $value $module <br />");
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}
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menu_rebuild();
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}
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function hosting_get_features($refresh = FALSE) {
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$cache = cache_get('hosting_features');
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if (!$cache->data || $refresh) {
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## include any optional hosting.feature.*.inc files
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$files = drupal_system_listing("hosting\.feature\.[a-zA-Z_]*\.inc$", "modules");
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if (sizeof($files)) {
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foreach ($files as $name => $info) {
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include_once($info->filename);
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}
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}
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$functions = get_defined_functions();
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foreach ($functions['user'] as $function) {
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if (preg_match('/_hosting_feature$/', $function)) {
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$hooks[] = $function;
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}
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}
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$features = array();
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foreach ($hooks as $func) {
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$features = array_merge($features, $func());
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}
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cache_set('hosting_features', $features);
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return $features;
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}
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else {
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return $cache->data;
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}
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}
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function hosting_feature_node_types($refresh = FALSE) {
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static $types;
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if (!is_array($types) || $refresh) {
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$features = hosting_get_features($refresh);
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foreach ($features as $feature => $info) {
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if ($info['node']) {
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$types[$feature] = $info['node'];
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}
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}
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}
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return $types;
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}
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