advagg_ext_minify.module

<?php


/**
 * @file
 * Advanced CSS/JS aggregation external minification module.
 */
// Contrib hook implementations.

/**
 * Implements hook_advagg_current_hooks_hash_array_alter().
 */
function advagg_ext_minify_advagg_current_hooks_hash_array_alter(&$aggregate_settings) {
    $aggregate_settings['variables']['advagg_ext_minify'] = \Drupal::config('advagg_ext_minify.settings')->get();
}

/**
 * Implements hook_advagg_js_minify_configuration_alter().
 */
function advagg_ext_minify_advagg_js_minify_configuration_alter(&$options_desc, &$compressors, &$functions) {
    // Test that shell_exec works - may be disabled on many hosts.
    if (!@shell_exec('ls') && !@shell_exec('dir')) {
        return;
    }
    // Test that an command has been configured.
    if (!\Drupal::config('advagg_ext_minify.settings')->get('js_cmd')) {
        return;
    }
    list($options, $description) = $options_desc;
    $options[] = t('AdvAgg Command Line Minifier');
    $compressors[] = 'advagg_cmdline';
    $functions[] = 'advagg_ext_minify_js_minify';
    $options_desc = [
        $options,
        $description,
    ];
}

/**
 * Implements hook_advagg_css_minify_configuration_alter().
 */
function advagg_ext_minify_advagg_css_minify_configuration_alter(&$options_desc, &$compressors, &$functions) {
    // Test that shell_exec works - may be disabled on many hosts.
    if (!@shell_exec('ls') && !@shell_exec('dir')) {
        return;
    }
    // Test that an command has been configured.
    if (!\Drupal::config('advagg_ext_minify.settings')->get('js_cmd')) {
        return;
    }
    list($options, $description) = $options_desc;
    $options[] = t('AdvAgg Command Line Minifier');
    $compressors[] = 'advagg_cmdline';
    $functions[] = 'advagg_ext_minify_css_minify';
    $options_desc = [
        $options,
        $description,
    ];
}
// Helper functions.

/**
 * Minify JavaScript via the command line.
 *
 * @param string $input_file
 *   The file containing the unaltered js data.
 * @param string $ext
 *   The string css or js.
 *
 * @return string
 *   The file containing the minified js data.
 */
function advagg_ext_minify_execute_cmd($input_file, $ext = '') {
    // Get file extension.
    if (empty($ext)) {
        $ext = strtolower(pathinfo($input_file, PATHINFO_EXTENSION));
        if ($ext !== 'css' && $ext !== 'js') {
            $info = \Drupal::service('state.advagg.files')->get($input_file);
            $ext = $info['fileext'];
        }
    }
    // Generate temp file.
    $temp_file = \Drupal::service("file_system")->tempnam('temporary://', 'file_advagg_');
    $new_temp_file = $temp_file . '.' . basename($input_file);
    @rename($temp_file, $new_temp_file);
    $output = \Drupal::service('file_system')->realpath($new_temp_file);
    $run = \Drupal::config('advagg_ext_minify.settings')->get($ext . '_cmd');
    $run = str_replace([
        '{%CWD%}',
        '{%IN%}',
        '{%IN_URL_ENC%}',
        '{%OUT%}',
    ], [
        \Drupal::root(),
        $input_file,
        urlencode(file_create_url($input_file)),
        escapeshellarg(realpath($output)),
    ], $run);
    // Run command and return the output file.
    shell_exec($run);
    return $output;
}

/**
 * Minify Javascript using via command line.
 *
 * @param string $contents
 *   The JavaScript to minify.
 */
function advagg_ext_minify_js_minify(&$contents) {
    $js_path = \Drupal::config('advagg.settings')->get('root_dir_prefix') . 'advagg_js';
    $temp_file = \Drupal::service("file_system")->tempnam($js_path, 'file_advagg_');
    $new_temp_file = $temp_file . '.js';
    rename($temp_file, $new_temp_file);
    $temp_file_full = advagg_get_relative_path($new_temp_file);
    file_put_contents($new_temp_file, $contents);
    $output = advagg_ext_minify_execute_cmd($temp_file_full, 'js');
    $contents = file_get_contents($output);
    // Cleanup.
    unset($new_temp_file);
    unset($temp_file_full);
    unset($output);
}

/**
 * Minify CSS using via command line.
 *
 * @param string $contents
 *   The CSS to minify.
 */
function advagg_ext_minify_css_minify(&$contents) {
    $css_path = \Drupal::config('advagg.settings')->get('root_dir_prefix') . 'advagg_css';
    $temp_file = \Drupal::service("file_system")->tempnam($css_path, 'file_advagg_');
    $new_temp_file = $temp_file . '.css';
    rename($temp_file, $new_temp_file);
    $temp_file_full = advagg_get_relative_path($new_temp_file);
    file_put_contents($new_temp_file, $contents);
    $output = advagg_ext_minify_execute_cmd($temp_file_full, 'css');
    $contents = file_get_contents($output);
    // Cleanup.
    unset($new_temp_file);
    unset($temp_file_full);
    unset($output);
}