advagg_ext_compress.module in Advanced CSS/JS Aggregation 7.2

Advanced CSS/JS aggregation external compression module.

File

advagg_ext_compress/advagg_ext_compress.module

<?php

/**
 * @file
 * Advanced CSS/JS aggregation external compression module.
 */

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

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

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

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

/**
 * Implements hook_advagg_js_compress_configuration_alter().
 */
function advagg_ext_compress_advagg_js_compress_configuration_alter(&$options_desc, &$compressors, &$functions) {
  list($options, $description) = $options_desc;
  $key = 10;
  while (isset($options[$key])) {
    $key++;
  }
  $options[$key] = t('AdvAgg Command Line Compressor');
  $compressors[$key] = 'advagg_cmdline';
  $functions[$key] = 'advagg_ext_compress_js_compress';
  $options_desc = array(
    $options,
    $description,
  );
}

/**
 * Implements hook_advagg_css_compress_configuration_alter().
 */
function advagg_ext_compress_advagg_css_compress_configuration_alter(&$options_desc, &$compressors, &$functions) {
  list($options, $description) = $options_desc;
  $key = 10;
  while (isset($options[$key])) {
    $key++;
  }
  $options[$key] = t('AdvAgg Command Line Compressor');
  $functions[$key] = 'advagg_ext_compress_css_compress';
  $options_desc = array(
    $options,
    $description,
  );
}

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

/**
 * Compress Javascript using via command line.
 *
 * @param string $input_file
 *   The file containing the uncompressed css/js data.
 * @param string $ext
 *   The string css or js.
 * @param array $debug
 *   Optional debug array.
 *
 * @return string
 *   The filename containing the compressed css/js data.
 */
function advagg_ext_compress_execute_cmd($input_file, $ext = '', array &$debug = array()) {
  $run = variable_get("advagg_ext_compress_{$ext}_cmd", '');
  if (empty($run)) {
    return FALSE;
  }

  // Get file extension.
  if (empty($ext)) {
    $ext = strtolower(pathinfo($input_file, PATHINFO_EXTENSION));
    if ($ext !== 'css' && $ext !== 'js') {

      // Get the $ext from the database.
      $row = db_select('advagg_files', 'af')
        ->fields('af')
        ->condition('filename', $input_file)
        ->execute()
        ->fetchAssoc();
      if (!empty($row['filetype'])) {
        $ext = $row['filetype'];
      }
      if ($ext === 'less') {
        $ext = 'css';
      }
    }
  }

  // Generate temp file.
  $temp_file = drupal_tempnam('temporary://', 'advagg_file_');
  $new_temp_file = $temp_file . '.' . basename($input_file);
  @rename($temp_file, $new_temp_file);

  // Set the permissions on the temp file.
  drupal_chmod($new_temp_file);
  $output = advagg_get_relative_path($new_temp_file);

  // Create command to run.
  $cmd = str_replace(array(
    '{%CWD%}',
    '{%IN%}',
    '{%IN_URL_ENC%}',
    '{%OUT%}',
  ), array(
    DRUPAL_ROOT,
    $input_file,
    urlencode(file_create_url($input_file)),
    escapeshellarg(realpath($output)),
  ), $run);

  // Run command and return the output file.
  $shell_output = array();
  $return_var = 0;
  $shell = exec($cmd, $shell_output, $return_var);
  $debug = array(
    $cmd,
    $shell_output,
    $return_var,
    $shell,
  );

  // Cleanup leftover files.
  if (file_exists($temp_file)) {
    @unlink($temp_file);
  }
  return $output;
}

/**
 * Compress Javascript using via command line.
 *
 * @param string $contents
 *   The JavaScript to compress.
 * @param bool $log_errors
 *   TRUE to log errors.
 *
 * @return bool
 *   FALSE if this failed.
 */
function advagg_ext_compress_js_compress(&$contents, $log_errors) {
  return advagg_ext_compress_string($contents, 'js', $log_errors);
}

/**
 * Compress CSS using via command line.
 *
 * @param string $contents
 *   The CSS to compress.
 * @param bool $log_errors
 *   TRUE to log errors.
 *
 * @return bool
 *   FALSE if this failed.
 */
function advagg_ext_compress_css_compress(&$contents, $log_errors) {
  return advagg_ext_compress_string($contents, 'css', $log_errors);
}

/**
 * Compress CSS using via command line.
 *
 * @param string $contents
 *   The data to compress.
 * @param string $type
 *   Should be css or js.
 * @param bool $log_errors
 *   TRUE to log errors.
 *
 * @return bool
 *   TRUE on success.
 */
function advagg_ext_compress_string(&$contents, $type, $log_errors) {
  list($css_path, $js_path) = advagg_get_root_files_dir();
  if ($type === 'css') {
    $dir = $css_path[0];
  }
  else {
    $dir = $js_path[0];
  }
  $new_temp_file = $dir . '/advagg_file_' . drupal_hash_base64(microtime(TRUE) . mt_rand()) . '.' . $type;
  $temp_file_full = advagg_get_relative_path($new_temp_file);
  file_put_contents($new_temp_file, $contents);

  // Set the permissions on the temp file.
  drupal_chmod($new_temp_file);
  $debug = array();
  $output = advagg_ext_compress_execute_cmd($temp_file_full, $type, $debug);
  if (empty($output)) {
    return FALSE;
  }
  $new_contents = advagg_file_get_contents($output);
  if (strpos($new_contents, 'Error') === 0) {
    if ($log_errors) {
      watchdog('advagg_ext_compress', "@a \n<br>\n<br> @b", array(
        // Only log 4k of data.
        '@a' => substr($new_contents, 0, 4096),
        '@b' => print_r($debug, TRUE),
      ));
    }
    $return = FALSE;
  }
  else {
    $contents = $new_contents;
    $return = TRUE;
  }

  // Cleanup.
  if (file_exists($new_temp_file)) {
    unlink($new_temp_file);
  }
  if (file_exists($temp_file_full)) {
    unlink($temp_file_full);
  }
  if (file_exists($output)) {
    unlink($output);
  }
  return $return;
}

Functions

Name	Description
advagg_ext_compress_advagg_css_compress_configuration_alter	Implements hook_advagg_css_compress_configuration_alter().
advagg_ext_compress_advagg_js_compress_configuration_alter	Implements hook_advagg_js_compress_configuration_alter().
advagg_ext_compress_css_compress	Compress CSS using via command line.
advagg_ext_compress_execute_cmd	Compress Javascript using via command line.
advagg_ext_compress_js_compress	Compress Javascript using via command line.
advagg_ext_compress_menu	Implements hook_menu().
advagg_ext_compress_string	Compress CSS using via command line.