source: sipes/0.3-modules/ente_planificador_term_fields/ente_planificador_term_fields.module @ d0d42a3

<?php
/**
 * @file
 * Module file for the Term Fields Ente Planificador module
 */

/**
 * Agregando la opcion para la importación de los campos
 */
function ente_planificador_term_fields_form_alter(&$form, $form_state, $form_id) {
  if ($form_id == 'ente_planificador_admin_settings') {
    // list of terms.
    $terms = array(
     '0' => t('Ninguno'),
     'geo_ve' => t('Entidades de Venezuela'),
    );
    $form['ubicacion'] = array(
      '#type' => 'fieldset',
      '#title' => t('Terminos de Ubicación'),
    );
    $form['ubicacion']['terminos'] = array(
      '#type' => 'select',
      '#title' => t('Terminos a Actualizar'),
      '#options' => $terms,
      '#description' => t('Seleccione la Lista de terminos a importar.'),
    );
    $vocabularies = taxonomy_get_vocabularies();
    $availables_vocabulary = array();
    if (count($vocabularies)) {
      foreach ($vocabularies as $vocabulary) {
        $availables_vocabulary[$vocabulary->vid] = check_plain($vocabulary->name);
      }
    }
    $vocabulary = taxonomy_vocabulary_load(variable_get('ente_ubicacion_vocabulary', 0));
    $availables_vocabulary[0] = t('Ninguno');
    ksort($availables_vocabulary);
    $form['ubicacion']['vocabulary'] = array(
      '#type' => 'select',
      '#title' => t('Vocabulario'),
      '#options' => $availables_vocabulary,
     '#description' => t('Seleccione el vocabulario en el que se han de importar los terminos.'),
    );
    $form['ubicacion']['submit'] = array(
      '#type'  => 'submit',
      '#value' => t('Guardar Terminos'),
      '#submit' => array('ente_planificador_term_fields_import_form_submit'),
    );
  }
}

/**
 * Process import country taxonomies into of drupal
 */
function ente_planificador_term_fields_import_form_submit($form, &$form_state) {
  module_load_include('php', 'ente_planificador_term_fields', '/includes/ente_planificador_geo_ve.inc');
  if (!(empty($form_state['values']['terminos']))) {
    if ($form_state['values']['terminos'] == 'geo_ve') {
      $entidades = lista_entidades();
      $vocabulary = taxonomy_vocabulary_load($form_state['values']['vocabulary']);
      _batch_ente_planificador_term_fields_states_export($entidades, $vocabulary);
    }
  }
}

/**
 * Batch add setting batch to import country taxonomies into of drupal
 */
function _batch_ente_planificador_term_fields_states_export($entidades, $vocabulary = 0) {
  module_load_include('php', 'ente_planificador_term_fields', '/includes/ente_planificador_geo_ve.inc');
  $entidades = lista_entidades();  
  if (empty($vocabulary)) {
    return FALSE;
  }
  $batch = array(
    'title' => t('Importando Entidades...'),
    'operations' => array(),
    'init_message' => t('Comenzando a importar los terminos'),
    'progress_message' => t('Procesando @current Entidades de @total.'),
    'error_message' => t('Ocurrio un error durante el proceso'),
    'finished' => '_ente_planificador_term_fields_import_finished',
  );
  foreach ($entidades as $id => $title) {
    $batch['operations'][] = array('_ente_planificador_term_fields_import_bacth', array($id, $vocabulary));
  }
  batch_set($batch);
  batch_process('admin/settings/ente_planificador'); // The path to redirect to when done.
}

/**
 * Batch callback term taxonomy into the Drupal
 */
function _ente_planificador_term_fields_import_bacth($id_entidad, $vocabulary, &$context) {
  module_load_include('php', 'ente_planificador_term_fields', '/includes/ente_planificador_geo_ve.inc');
  $entidad = lista_entidades($id_entidad);

  $edit = array(
    'name' => t($entidad),
    'description' => '',
    'parent' => array(0),
    'vid' => $vocabulary->vid,
    'fields' => array(
      'codigo_geo_localizacion' =>  array(
        'value' => $id_entidad,
      ),
    ),
  );
  $term_e = $edit;
  $term_e = taxonomy_save_term($term_e);
  $municipios = lista_municipios($id_entidad);
  if (count($municipios)) {
    // agregando los municipios
    $countm = 0;
    foreach ($municipios as $id_e => $value_m) {
      $edit = array(
        'name' => t($value_m[1]),
        'description' => '',
        'parent' => array($term_e['tid']),
        'vid' => $vocabulary->vid,
        'fields' => array(
          'codigo_geo_localizacion' =>  array(
            'value' => $value_m[0]
          ),
        ),
      );
     $term_m = $edit;
     $term_m  = taxonomy_save_term($term_m);
     $countm++;
     $parroquias = lista_parroquias($value_m[0]);
     if (count($parroquias)) {
       $countp = 0;
       foreach ($parroquias as $id_m => $value_p) {
         // agregando las parroquias
         $edit = array(
           'name' => t($value_p[1]),
           'description' => '',
           'parent' => array($term_m['tid']),
           'vid' => $vocabulary->vid,
           'fields' => array(
             'codigo_geo_localizacion' =>  array(
               'value' => $value_p[0]
             ),
           ),
         );
         $term_p = $edit;
         $term_p = taxonomy_save_term($term_p);
         $countp++;
       }
      }
    }
  }
  $context['message'] = t('Se Esta agregando los Municipios y Parroquias del Estado: @entidad.', array('@entidad' => $entidad));
  $context['results'][] = t('La Entidad @name fue agregado @count Municipios y @countp Parroquias.', array('@name' => $entidad, '@count' => $countm, '@countp' => $countp));
}

/**
 * Batch 'finished' callback 
 */
function _ente_planificador_term_fields_import_finished($success, $results, $operations) {
  if ($success) {
    // Here we do something meaningful with the results.
    $message = t('%count Entidades procesadas: !items', array('%count' => count($results), '!items' => theme('item_list', array('items' => $results))));
  }
  else {
    // An error occurred.
    // $operations contains the operations that remained unprocessed.
    $error_operation = reset($operations);
    $message = t('An error occurred while processing %error_operation with arguments: @arguments', array('%error_operation' => $error_operation[0], '@arguments' => print_r($error_operation[1], TRUE)));
  }
  drupal_set_message($message);
}