<?php

/**

 * @file

 * Batch callbacks for the Batch API tests.

 */

/**

 * Implements callback_batch_operation().

 *

 * Simple batch operation.

 */

function _batch_test_callback_1($id, $sleep, &$context) {

  // No-op, but ensure the batch take a couple iterations.

  // Batch needs time to run for the test, so sleep a bit.

  usleep($sleep);

  // Track execution, and store some result for post-processing in the

  // 'finished' callback.

  batch_test_stack("op 1 id $id");

  $context['results'][1][] = $id;

}

/**

 * Implements callback_batch_operation().

 *

 * Multistep batch operation.

 */

function _batch_test_callback_2($start, $total, $sleep, &$context) {

  // Initialize context with progress information.

  if (!isset($context['sandbox']['current'])) {

    $context['sandbox']['current'] = $start;

    $context['sandbox']['count'] = 0;

  }

  // Process by groups of 5 (arbitrary value).

  $limit = 5;

  for ($i = 0; $i < $limit && $context['sandbox']['count'] < $total; $i++) {

    // No-op, but ensure the batch take a couple iterations.

    // Batch needs time to run for the test, so sleep a bit.

    usleep($sleep);

    // Track execution, and store some result for post-processing in the

    // 'finished' callback.

    $id = $context['sandbox']['current'] + $i;

    batch_test_stack("op 2 id $id");

    $context['results'][2][] = $id;

    // Update progress information.

    $context['sandbox']['count']++;

  }

  $context['sandbox']['current'] += $i;

  // Inform batch engine about progress.

  if ($context['sandbox']['count'] != $total) {

    $context['finished'] = $context['sandbox']['count'] / $total;

  }

}

/**

 * Implements callback_batch_operation().

 *

 * Simple batch operation.

 */

function _batch_test_callback_5($id, $sleep, &$context) {

  // No-op, but ensure the batch take a couple iterations.

  // Batch needs time to run for the test, so sleep a bit.

  usleep($sleep);

  // Track execution, and store some result for post-processing in the

  // 'finished' callback.

  batch_test_stack("op 5 id $id");

  $context['results'][5][] = $id;

  // This test is to test finished > 1

  $context['finished'] = 3.14;

}

/**

 * Implements callback_batch_operation().

 *

 * Batch operation setting up its own batch.

 */

function _batch_test_nested_batch_callback() {

  batch_test_stack('setting up batch 2');

  batch_set(_batch_test_batch_2());

}

/**

 * Implements callback_batch_finished().

 *

 * Common 'finished' callbacks for batches 1 to 4.

 */

function _batch_test_finished_helper($batch_id, $success, $results, $operations) {

  $messages = array("results for batch $batch_id");

  if ($results) {

    foreach ($results as $op => $op_results) {

      $messages[] = 'op '. $op . ': processed ' . count($op_results) . ' elements';

    }

  }

  else {

    $messages[] = 'none';

  }

  if (!$success) {

    // A fatal error occurred during the processing.

    $error_operation = reset($operations);

    $messages[] = t('An error occurred while processing @op with arguments:<br/>@args', array('@op' => $error_operation[0], '@args' => print_r($error_operation[1], TRUE)));

  }

  drupal_set_message(implode('<br />', $messages));

}

/**

 * Implements callback_batch_finished().

 *

 * 'finished' callback for batch 0.

 */

function _batch_test_finished_0($success, $results, $operations) {

  _batch_test_finished_helper(0, $success, $results, $operations);

}

/**

 * Implements callback_batch_finished().

 *

 * 'finished' callback for batch 1.

 */

function _batch_test_finished_1($success, $results, $operations) {

  _batch_test_finished_helper(1, $success, $results, $operations);

}

/**

 * Implements callback_batch_finished().

 *

 * 'finished' callback for batch 2.

 */

function _batch_test_finished_2($success, $results, $operations) {

  _batch_test_finished_helper(2, $success, $results, $operations);

}

/**

 * Implements callback_batch_finished().

 *

 * 'finished' callback for batch 3.

 */

function _batch_test_finished_3($success, $results, $operations) {

  _batch_test_finished_helper(3, $success, $results, $operations);

}

/**

 * Implements callback_batch_finished().

 *

 * 'finished' callback for batch 4.

 */

function _batch_test_finished_4($success, $results, $operations) {

  _batch_test_finished_helper(4, $success, $results, $operations);

}

/**

 * Implements callback_batch_finished().

 *

 * 'finished' callback for batch 5.

 */

function _batch_test_finished_5($success, $results, $operations) {

  _batch_test_finished_helper(5, $success, $results, $operations);

}