<?php

/**
 * Root directory of Drupal installation.
 */

if (function_exists('drush_print')) {
  $log = 'drush_print';
}
else {
  define('DRUPAL_ROOT', getcwd());
  require_once DRUPAL_ROOT . '/includes/bootstrap.inc';
  drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
  $log = 'drupal_set_message';
}

$field_info = field_info_fields();
$valid_languages = TRUE;

// For each field check that no value has a language assigned, otherwise
// switching the field's translatablity would cause misbehaviors in the whole
// field attach workflow.
foreach ($field_info as $field_name => $field) {
  $query = new EntityFieldQuery();

  $count = $query
    ->fieldLanguageCondition($field, LANGUAGE_NONE, '!=')
    ->range(0, 1)
    ->count()
    ->execute();

  if ($count > 0) {
    $valid_languages = FALSE;
    break;
  }
}

if ($valid_languages) {
  foreach (entity_get_info() as $entity_type => $info) {
    // Entities having a field translation handler associated must not be
    // touched, since in this case changing the field translatable property
    // might have an impact on the site behavior.
    if ($info['fieldable'] && !field_has_translation_handler($entity_type)) {
      foreach (field_info_instances($entity_type) as $bundle => $info) {
        foreach ($info as $field_name => $instance) {
          $field = &$field_info[$field_name];
          if ($field['translatable']) {
            // Turn off translatability for every field for which this is safe.
            $field['translatable'] = FALSE;
            field_update_field($field);
          }
        }
      }
    }
  }

  // Ensure that the updated values are correctly picked up.
  field_info_cache_clear();
  
  $log(t('Field translatablility update performed.'));
}

$log(t('Field translatablility update complete.'));
 
drupal_goto('');