advagg_css_compress.advagg.inc

<?php


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

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

/**
 * Implements hook_advagg_get_css_file_contents_pre_alter().
 */
function advagg_css_compress_advagg_get_css_file_contents_pre_alter(&$file, &$optimize, &$aggregate_settings) {
    // Get per file settings.
    if (!empty($aggregate_settings['variables']['advagg_css_compressor_file_settings'])) {
        $form_api_filename = str_replace(array(
            '/',
            '.',
        ), array(
            '__',
            '--',
        ), $file);
        if (isset($aggregate_settings['variables']['advagg_css_compressor_file_settings'][$form_api_filename])) {
            $aggregate_settings['variables']['advagg_css_compressor'] = $aggregate_settings['variables']['advagg_css_compressor_file_settings'][$form_api_filename];
        }
    }
    if (isset($aggregate_settings['variables']['advagg_css_compressor']) && $aggregate_settings['variables']['advagg_css_compressor'] == -1) {
        $optimize = FALSE;
    }
}

/**
 * Implements hook_advagg_get_css_aggregate_contents_alter().
 */
function advagg_css_compress_advagg_get_css_aggregate_contents_alter(&$data, $files, $aggregate_settings) {
    // Get per file settings.
    foreach ($files as $filename => $settings) {
        if (!empty($aggregate_settings['variables']['advagg_css_compressor_file_settings'])) {
            $form_api_filename = str_replace(array(
                '/',
                '.',
            ), array(
                '__',
                '--',
            ), $filename);
            if (isset($aggregate_settings['variables']['advagg_css_compressor_file_settings'][$form_api_filename])) {
                $aggregate_settings['variables']['advagg_css_compressor'] = $aggregate_settings['variables']['advagg_css_compressor_file_settings'][$form_api_filename];
                // If one file can not be compressed then the whole aggregrate can not
                // be compressed.
                if ($aggregate_settings['variables']['advagg_css_compressor'] == 0) {
                    break;
                }
            }
        }
    }
    // Do nothing if the compressor is disabled.
    if (empty($aggregate_settings['variables']['advagg_css_compressor'])) {
        return;
    }
    // Do nothing if the cache settings are set to Development.
    if (variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {
        return;
    }
    list(, , , $functions) = advagg_css_compress_configuration();
    if (isset($functions[$aggregate_settings['variables']['advagg_css_compressor']])) {
        $run = $functions[$aggregate_settings['variables']['advagg_css_compressor']];
        if (function_exists($run)) {
            $functions[$aggregate_settings['variables']['advagg_css_compressor']]($data);
        }
    }
}

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

/**
 * Use the CSSmin library from YUI to compress the CSS.
 */
function advagg_css_compress_yui_cssmin(&$data) {
    // Try libraries for YUI.
    if (is_callable('libraries_load')) {
        libraries_load('YUI-CSS-compressor-PHP-port');
        if (class_exists('tubalmartin\\CssMin\\Minifier')) {
            // The "use" alias requires php 5.3.
            // @codingStandardsIgnoreLine
            $cssmin = new tubalmartin\CssMin\Minifier();
        }
        elseif (class_exists('CSSmin')) {
            $cssmin = new CSSmin();
        }
    }
    if (!isset($cssmin)) {
        // Load CSSMin.inc if the CSSmin class variable is not set.
        if (!class_exists('CSSmin')) {
            include drupal_get_path('module', 'advagg_css_compress') . '/yui/CSSMin.inc';
        }
        $cssmin = new CSSmin();
    }
    if (!isset($cssmin)) {
        return;
    }
    // Set line break to 4k of text.
    if (method_exists($cssmin, 'setLineBreakPosition')) {
        $cssmin->setLineBreakPosition(4096);
    }
    // Compress the CSS splitting lines after 4k of text.
    if (method_exists($cssmin, 'run')) {
        $compressed = $cssmin->run($data, 4096);
    }
    if (!empty($compressed)) {
        $data = $compressed;
    }
}