function advagg_aggressive_cache_conflicts

Check and see if the aggressive cache can safely be enabled.

Return value

array If there are no conflicts, this will return an empty array.

2 calls to advagg_aggressive_cache_conflicts()

advagg_admin_settings_form in ./advagg.admin.inc

Form builder; Configure advagg settings.

advagg_requirements in ./advagg.install

Implements hook_requirements().

File

./advagg.module, line 5337

Code

function advagg_aggressive_cache_conflicts() {
    $hooks = array(
        'css_alter' => TRUE,
        'js_alter' => TRUE,
    );
    foreach ($hooks as $hook => $values) {
        $hooks[$hook] = module_implements($hook);
        // Also check themes as drupal_alter() allows for themes to alter things.
        $themes = list_themes();
        $theme_keys = array_keys($themes);
        if (!empty($theme_keys)) {
            foreach ($theme_keys as $theme_key) {
                $function = $theme_key . '_' . $hook;
                // Search loaded themes.
                if (function_exists($function)) {
                    $hooks[$hook][] = $theme_key;
                    continue;
                }
                // Skip disabled themes.
                if (empty($themes[$theme_key]->status)) {
                    continue;
                }
                // Search enabled but not loaded themes.
                $file = dirname($themes[$theme_key]->filename) . '/template.php';
                if (file_exists($file)) {
                    $contents = (string) @advagg_file_get_contents($file);
                    if (stripos($contents, $function)) {
                        $hooks[$hook][] = $theme_key;
                    }
                }
            }
        }
    }
    $whitelist = array(
        // Core.
        //
        // locale_js_directory variable; default: languages.
        // javascript_parsed variable; default: array().
'locale',
        // No control; same every time.
'simpletest',
        // No control; same every time.
'seven',
        // Popular contrib.
        //
        // No control; same every time.
'at_commerce',
        // ais_adaptive_styles variable; Default: array().
        // ais_adaptive_styles_method; Default: 'both-max'.
        // 'ais',
        //
        // No control; same every time.
'bluecheese',
        // drupal_static('clientside_validation_settings') array.
        // 'clientside_validation',
        //
        // version_compare(VERSION, '7.14', '<').
'conditional_fields',
        // _css_injector_load_rule() function.
        // Changes the weight of all files added in init so no special handling.
        // 'css_injector',
        //
        // disable_css_ . $theme . _all variable; default: FALSE.
        // disable_css_ . $theme . _modules; default: array().
        // disable_css_ . $theme . _files; default: array().
        // 'disable_css',
        //
        // Empty call; commented code is same every time.
'elfinder',
        // excluded_css_custom variable; Default: ''.
        // excluded_javascript_custom variable; Default: ''.
        // 'excluded',
        //
        // No control; same every time.
'fences',
        // jqmulti_jquery_path() function.
        // jqmulti_get_files() function.
        // jqmulti_load_always variable; Default: FALSE.
        // 'jqmulti',
        //
        // No control; same every time.
'jquery_dollar',
        // labjs_suppress() function.
'labjs_js',
        // Empty call.
'panopoly_core',
        // speedy_js_production variable; Default: TRUE.
'speedy',
        // logintoboggan_validating_id() function.
'logintoboggan',
    );
    // Allow other modules to modify the $whitelist.
    // Call hook_advagg_aggressive_cache_conflicts_alter()
    drupal_alter('advagg_aggressive_cache_conflicts', $whitelist);
    $questionable_modules = array();
    foreach ($hooks as $hook => $modules) {
        foreach ($modules as $key => $module) {
            // Anything from advagg is ok.
            if (strpos($module, 'advagg') === 0 || strpos($module, '_advagg') === 0) {
                unset($modules[$key]);
                continue;
            }
            // Remove known modules that should work with aggressive caching.
            if (in_array($module, $whitelist)) {
                unset($modules[$key]);
            }
            else {
                $questionable_modules[$module] = $module;
            }
        }
    }
    return $questionable_modules;
}