advagg_css_compress.module

<?php


/**
 * @file
 * Advanced aggregation css compression module.
 */

/**
 * @addtogroup default_variables
 * @{
 */

/**
 * Default value for which css compression library to use. 0 is Disabled.
 */
define('ADVAGG_CSS_COMPRESSOR', 2);

/**
 * Default value to see what compressor to use. 0 is Disabled.
 */
define('ADVAGG_CSS_COMPRESS_INLINE', 0);

/**
 * Default value to if inline compression is used if page is not cacheable.
 */
define('ADVAGG_CSS_COMPRESS_INLINE_IF_NOT_CACHEABLE', FALSE);

/**
 * Default value for per file compression settings.
 */
define('ADVAGG_CSS_COMPRESSOR_FILE_SETTINGS', -10);

/**
 * @} End of "addtogroup default_variables".
 */

/**
 * @addtogroup hooks
 * @{
 */

/**
 * Implements hook_menu().
 */
function advagg_css_compress_menu() {
    $file_path = drupal_get_path('module', 'advagg_css_compress');
    $config_path = advagg_admin_config_root_path();
    $items[$config_path . '/advagg/css-compress'] = array(
        'title' => 'CSS Compression',
        'description' => 'Adjust CSS Compression settings.',
        'page callback' => 'drupal_get_form',
        'page arguments' => array(
            'advagg_css_compress_admin_settings_form',
        ),
        'type' => MENU_LOCAL_TASK,
        'access arguments' => array(
            'administer site configuration',
        ),
        'file path' => $file_path,
        'file' => 'advagg_css_compress.admin.inc',
        'weight' => 10,
    );
    return $items;
}

/**
 * @} End of "addtogroup hooks".
 */

/**
 * @addtogroup advagg_hooks
 * @{
 */

/**
 * Implements hook_advagg_current_hooks_hash_array_alter().
 */
function advagg_css_compress_advagg_current_hooks_hash_array_alter(&$aggregate_settings) {
    $aggregate_settings['variables']['advagg_css_compressor'] = variable_get('advagg_css_compressor', ADVAGG_CSS_COMPRESSOR);
    $aggregate_settings['variables']['advagg_css_compressor_file_settings'] = variable_get('advagg_css_compressor_file_settings', array());
}

/**
 * Implements hook_advagg_modify_css_pre_render_alter().
 *
 * Used to compress inline css.
 */
function advagg_css_compress_advagg_modify_css_pre_render_alter(&$children, &$elements) {
    // Get variables.
    $compressor = variable_get('advagg_css_compress_inline', ADVAGG_CSS_COMPRESS_INLINE);
    // Do nothing if the compressor is disabled.
    if (empty($compressor)) {
        return;
    }
    // Do nothing if the page is not cacheable and inline compress if not
    // cacheable is not checked.
    if (!variable_get('advagg_css_compress_inline_if_not_cacheable', ADVAGG_CSS_COMPRESS_INLINE_IF_NOT_CACHEABLE) && !drupal_page_is_cacheable()) {
        return;
    }
    module_load_include('inc', 'advagg_css_compress', 'advagg_css_compress.advagg');
    if ($compressor == 2) {
        // Compress any inline CSS with YUI.
        foreach ($children as &$values) {
            if (!empty($values['#value'])) {
                advagg_css_compress_yui_cssmin($values['#value']);
            }
        }
        unset($values);
    }
}

/**
 * @} End of "addtogroup advagg_hooks".
 */

/**
 * @addtogroup 3rd_party_hooks
 * @{
 */

/**
 * Implements hook_libraries_info().
 */
function advagg_css_compress_libraries_info() {
    $libraries['YUI-CSS-compressor-PHP-port'] = array(
        // Only used in administrative UI of Libraries API.
'name' => 'YUI CSS compressor PHP port',
        'vendor url' => 'https://github.com/tubalmartin/YUI-CSS-compressor-PHP-port',
        'download url' => 'https://github.com/tubalmartin/YUI-CSS-compressor-PHP-port/archive/master.zip',
        'version callback' => 'advagg_css_compress_libraries_get_version',
        'version arguments' => array(
            'file' => 'README.md',
            'pattern' => '/###\\s+v([0-9a-zA-Z\\.-]+)/',
            'lines' => 1000,
            'cols' => 20,
            'default_version' => '2.4.8',
        ),
        'local version' => '2.4.8-p10',
        'remote' => array(
            'callback' => 'advagg_get_github_version_txt',
            'url' => 'https://cdn.jsdelivr.net/gh/tubalmartin/YUI-CSS-compressor-PHP-port@master/README.md',
        ),
        'versions' => array(
            '2' => array(
                'files' => array(
                    'php' => array(
                        'cssmin.php',
                        'data/hex-to-named-color-map.php',
                        'data/named-to-hex-color-map.php',
                    ),
                ),
            ),
            '3' => array(
                'files' => array(
                    'php' => array(
                        'src/Minifier.php',
                        'src/Utils.php',
                        'src/Colors.php',
                        'src/data/hex-to-named-color-map.php',
                        'src/data/named-to-hex-color-map.php',
                    ),
                ),
            ),
            '4' => array(
                'files' => array(
                    'php' => array(
                        'src/Minifier.php',
                        'src/Utils.php',
                        'src/Colors.php',
                    ),
                ),
            ),
        ),
    );
    return $libraries;
}

/**
 * @} End of "addtogroup 3rd_party_hooks".
 */

/**
 * Try libraries_get_version(), on failure use the passed in default_version.
 *
 * @param array $library
 *   An associative array containing all information about the library.
 * @param array $options
 *   An associative array containing options for the version parser.
 *
 * @return string
 *   Version number.
 */
function advagg_css_compress_libraries_get_version(array $library, array $options) {
    $return = libraries_get_version($library, $options);
    if (empty($return) && !empty($options['default_version'])) {
        $file = DRUPAL_ROOT . '/' . $library['library path'] . '/' . $options['file'];
        if (is_readable($file)) {
            return $options['default_version'];
        }
    }
    return $return;
}

/**
 * Generate the js compress configuration.
 *
 * @return array
 *   Array($options, $description, $compressors, $functions).
 */
function advagg_css_compress_configuration() {
    $description = '';
    $options = array(
        -1 => t('Disable Core'),
        0 => t('Core'),
        2 => t('YUI'),
    );
    $compressors = array();
    $functions = array(
        2 => 'advagg_css_compress_yui_cssmin',
    );
    // Allow for other modules to alter this list.
    $options_desc = array(
        $options,
        $description,
    );
    drupal_alter('advagg_css_compress_configuration', $options_desc, $compressors, $functions);
    list($options, $description) = $options_desc;
    return array(
        $options,
        $description,
        $compressors,
        $functions,
    );
}