Club Drupal

<?php

/**

 * @file

 * Defines the core Commerce product entity, including the entity itself, the

 * bundle definitions (product types), and various API functions to manage

 * products and interact with them through forms and autocompletes.

 */

/**

 * Implements hook_menu().

 */

function commerce_product_menu() {

  $items = array();

  $items['commerce_product/autocomplete'] = array(

    'title' => 'commerce_product autocomplete',

    'page callback' => 'commerce_product_autocomplete',

    'access callback' => TRUE,

    'type' => MENU_CALLBACK,

  );

  return $items;

}

/**

 * Implements hook_hook_info().

 */

function commerce_product_hook_info() {

  $hooks = array(

    'commerce_product_type_info' => array(

      'group' => 'commerce',

    ),

    'commerce_product_type_info_alter' => array(

      'group' => 'commerce',

    ),

    'commerce_product_type_insert' => array(

      'group' => 'commerce',

    ),

    'commerce_product_type_update' => array(

      'group' => 'commerce',

    ),

    'commerce_product_type_delete' => array(

      'group' => 'commerce',

    ),

    'commerce_product_uri' => array(

      'group' => 'commerce',

    ),

    'commerce_product_view' => array(

      'group' => 'commerce',

    ),

    'commerce_product_presave' => array(

      'group' => 'commerce',

    ),

    'commerce_product_insert' => array(

      'group' => 'commerce',

    ),

    'commerce_product_update' => array(

      'group' => 'commerce',

    ),

    'commerce_product_can_delete' => array(

      'group' => 'commerce',

    ),

    'commerce_product_delete' => array(

      'group' => 'commerce',

    ),

  );

  return $hooks;

}

/**

 * Implements hook_entity_info().

 */

function commerce_product_entity_info() {

  $return = array(

    'commerce_product' => array(

      'label' => t('Commerce Product'),

      'controller class' => 'CommerceProductEntityController',

      'base table' => 'commerce_product',

      'revision table' => 'commerce_product_revision',

      'fieldable' => TRUE,

      'entity keys' => array(

        'id' => 'product_id',

        'bundle' => 'type',

        'label' => 'title',

        'revision' => 'revision_id',

        'language' => 'language',

      ),

      'bundle keys' => array(

        'bundle' => 'type',

      ),

      'bundles' => array(),

      'load hook' => 'commerce_product_load',

      'view modes' => array(

        'full' => array(

          'label' => t('Admin display'),

          'custom settings' => FALSE,

        ),

      ),

      'uri callback' => 'commerce_product_uri',

      'metadata controller class' => '',

      'token type' => 'commerce-product',

      'access callback' => 'commerce_entity_access',

      'access arguments' => array(

        'user key' => 'uid',

        'access tag' => 'commerce_product_access',

      ),

      'permission labels' => array(

        'singular' => t('product'),

        'plural' => t('products'),

      ),

      // Prevent Redirect alteration of the product form.

      'redirect' => FALSE,

      // Add translation support.

      'translation' => array(

        'locale' => TRUE,

        'entity_translation' => array(

          'class' => 'EntityTranslationCommerceProductHandler',

          'bundle callback' => 'commerce_product_entity_translation_supported_type',

          'default settings' => array(

            'default_language' => LANGUAGE_NONE,

            'hide_language_selector' => FALSE,

          ),

        ),

      ),

      // Add title replacement support for translations.

      'field replacement' => array(

        'title' => array(

          'field' => array(

            'type' => 'text',

            'cardinality' => 1,

            'translatable' => TRUE,

          ),

          'instance' => array(

            'label' => t('Title'),

            'required' => TRUE,

            'settings' => array(

              'text_processing' => 0,

            ),

            'widget' => array(

              'weight' => -5,

            ),

          ),

        ),

      ),

    ),

  );

  $return['commerce_product']['bundles'] = array();

  foreach (commerce_product_type_get_name() as $type => $name) {

    $return['commerce_product']['bundles'][$type] = array(

      'label' => $name,

    );

  }

  return $return;

}

/**

 * Entity uri callback: gives modules a chance to specify a path for a product.

 */

function commerce_product_uri($product) {

  // Allow modules to specify a path, returning the first one found.

  foreach (module_implements('commerce_product_uri') as $module) {

    $uri = module_invoke($module, 'commerce_product_uri', $product);

    // If the implementation returned data, use that now.

    if (!empty($uri)) {

      return $uri;

    }

  }

  return NULL;

}

/**

 * Implements hook_file_download_access().

 *

 * This hook is grants access to files based on a user's access to the entity

 * a file is attached to. For example, users with access to a product should be

 * allowed to download files attached to that product. Here we do this on a per-

 * field basis for files attached to products.

 *

 * @param $field

 *   The field to which the file belongs.

 * @param $entity_type

 *   The type of $entity; for example, 'node' or 'user' or 'commerce_product'.

 * @param $entity

 *   The $entity to which $file is referenced.

 *

 * @return

 *   TRUE if access should be allowed by this entity or FALSE if denied. Note

 *   that denial may be overridden by another entity controller, making this

 *   grant permissive rather than restrictive.

 */

function commerce_product_file_download_access($field, $entity_type, $entity) {

  if ($entity_type == 'commerce_product') {

    return field_access('view', $field, $entity_type, $entity);

  }

}

/**

 * Implements hook_field_extra_fields().

 */

function commerce_product_field_extra_fields() {

  $extra = &drupal_static(__FUNCTION__);

  if (!isset($extra)) {

    foreach (commerce_product_types() as $type => $product_type) {

      $extra['commerce_product'][$type] = array(

        'form' => array(

          'sku' => array(

            'label' => t('Product SKU'),

            'description' => t('Product module SKU form element'),

            'weight' => -10,

          ),

          'title' => array(

            'label' => t('Title'),

            'description' => t('Product module title form element'),

            'weight' => -5,

          ),

          'status' => array(

            'label' => t('Status'),

            'description' => t('Product module status form element'),

            'weight' => 35,

          ),

        ),

        'display' => array(

          'sku' => array(

            'label' => t('SKU'),

            'description' => t('The human readable identifier of the product'),

            'theme' => 'commerce_product_sku',

            'weight' => -10,

          ),

          'title' => array(

            'label' => t('Title'),

            'description' => t('Full product title'),

            'theme' => 'commerce_product_title',

            'weight' => -5,

          ),

          'status' => array(

            'label' => t('Status'),

            'description' => t('Whether the product is active or disabled'),

            'theme' => 'commerce_product_status',

            'weight' => 5,

          ),

        ),

      );

    }

  }

  return $extra;

}

/**

 * Implements hook_theme().

 */

function commerce_product_theme() {

  return array(

    'commerce_product_sku' => array(

      'variables' => array('sku' => NULL, 'label' => NULL, 'product' => NULL),

      'path' => drupal_get_path('module', 'commerce_product') . '/theme',

      'template' => 'commerce-product-sku',

    ),

    'commerce_product_title' => array(

      'variables' => array('title' => NULL, 'label' => NULL, 'product' => NULL),

      'path' => drupal_get_path('module', 'commerce_product') . '/theme',

      'template' => 'commerce-product-title',

    ),

    'commerce_product_status' => array(

      'variables' => array('status' => NULL, 'label' => NULL, 'product' => NULL),

      'path' => drupal_get_path('module', 'commerce_product') . '/theme',

      'template' => 'commerce-product-status',

    ),

  );

}

/**

 * Implements hook_views_api().

 */

function commerce_product_views_api() {

  return array(

    'api' => 3,

    'path' => drupal_get_path('module', 'commerce_product') . '/includes/views',

  );

}

/**

 * Implements hook_permission().

 */

function commerce_product_permission() {

  $permissions = array(

    'administer product types' => array(

      'title' => t('Administer product types'),

      'description' => t('Allows users to configure product types and their fields.'),

      'restrict access' => TRUE,

    ),

  );

  $permissions += commerce_entity_access_permissions('commerce_product');

  return $permissions;

}

/**

 * Implements hook_enable().

 */

function commerce_product_enable() {

  commerce_product_configure_product_types();

}

/**

 * Implements hook_modules_enabled().

 */

function commerce_product_modules_enabled($modules) {

  commerce_product_configure_product_fields($modules);

}

/**

 * Configure the product types defined by enabled modules.

 */

function commerce_product_configure_product_types() {

  foreach (commerce_product_types() as $type => $product_type) {

    commerce_product_configure_product_type($type);

  }

}

/**

 * Ensures a base price field is present on a product type bundle.

 */

function commerce_product_configure_product_type($type) {

  commerce_price_create_instance('commerce_price', 'commerce_product', $type, t('Price'), 0, 'calculated_sell_price');

}

/**

 * Configures the fields on product types provided by other modules.

 *

 * @param $modules

 *   An array of module names whose product type fields should be configured;

 *   if left NULL, will default to all modules that implement

 *   hook_commerce_product_type_info().

 */

function commerce_product_configure_product_fields($modules = NULL) {

  // If no modules array is passed, recheck the fields for all product types

  // defined by enabled modules.

  if (empty($modules)) {

    $modules = module_implements('commerce_product_type_info');

  }

  // Reset the product type cache to get types added by newly enabled modules.

  commerce_product_types_reset();

  // Loop through all the enabled modules.

  foreach ($modules as $module) {

    // If the module implements hook_commerce_product_type_info()...

    if (module_hook($module, 'commerce_product_type_info')) {

      $product_types = module_invoke($module, 'commerce_product_type_info');

      // Loop through and configure the product types defined by the module.

      foreach ($product_types as $type => $product_type) {

        commerce_product_configure_product_type($type);

      }

    }

  }

}

/**

 * Returns an array of product type arrays keyed by type.

 */

function commerce_product_types() {

  // First check the static cache for a product types array.

  $product_types = &drupal_static(__FUNCTION__);

  // If it did not exist, fetch the types now.

  if (!isset($product_types)) {

    $product_types = array();

    // Find product types defined by hook_commerce_product_type_info().

    foreach (module_implements('commerce_product_type_info') as $module) {

      foreach (module_invoke($module, 'commerce_product_type_info') as $type => $product_type) {

        // Set the module each product type is defined by and revision handling

        // if they aren't set yet.

        $product_type += array(

          'module' => $module,

          'revision' => 1,

        );

        $product_types[$type] = $product_type;

      }

    }

    // Last allow the info to be altered by other modules.

    drupal_alter('commerce_product_type_info', $product_types);

  }

  return $product_types;

}

/**

 * Resets the cached list of product types.

 */

function commerce_product_types_reset() {

  $product_types = &drupal_static('commerce_product_types');

  $product_types = NULL;

  entity_info_cache_clear();

}

/**

 * Loads a product type.

 *

 * @param $type

 *   The machine-readable name of the product type; accepts normal machine names

 *     and URL prepared machine names with underscores replaced by hyphens.

 */

function commerce_product_type_load($type) {

  $type = strtr($type, array('-' => '_'));

  $product_types = commerce_product_types();

  return !empty($product_types[$type]) ? $product_types[$type] : FALSE;

}

/**

 * Returns the human readable name of any or all product types.

 *

 * @param $type

 *   Optional parameter specifying the type whose name to return.

 *

 * @return

 *   Either an array of all product type names keyed by the machine name or a

 *     string containing the human readable name for the specified type. If a

 *     type is specified that does not exist, this function returns FALSE.

 */

function commerce_product_type_get_name($type = NULL) {

  $product_types = commerce_product_types();

  // Return a type name if specified and it exists.

  if (!empty($type)) {

    if (isset($product_types[$type])) {

      return $product_types[$type]['name'];

    }

    else {

      // Return FALSE if it does not exist.

      return FALSE;

    }

  }

  // Otherwise turn the array values into the type name only.

  $product_type_names = array();

  foreach ($product_types as $key => $value) {

    $product_type_names[$key] = $value['name'];

  }

  return $product_type_names;

}

/**

 * Wraps commerce_product_type_get_name() for the Entity module.

 */

function commerce_product_type_options_list() {

  return commerce_product_type_get_name();

}

/**

 * Returns a path argument from a product type.

 */

function commerce_product_type_to_arg($type) {

  return strtr($type, '_', '-');

}

/**

 * Returns an initialized product object.

 *

 * @param $type

 *   The machine-readable type of the product.

 *

 * @return

 *   A product object with all default fields initialized.

 */

function commerce_product_new($type = '') {

  return entity_get_controller('commerce_product')->create(array('type' => $type));

}

/**

 * Saves a product.

 *

 * @param $product

 *   The full product object to save.

 *

 * @return

 *   SAVED_NEW or SAVED_UPDATED depending on the operation performed.

 */

function commerce_product_save($product) {

  return entity_get_controller('commerce_product')->save($product);

}

/**

 * Loads a product by ID.

 */

function commerce_product_load($product_id) {

  if (empty($product_id)) {

    return FALSE;

  }

  $products = commerce_product_load_multiple(array($product_id), array());

  return $products ? reset($products) : FALSE;

}

/**

 * Loads a product by SKU.

 */

function commerce_product_load_by_sku($sku) {

  $products = commerce_product_load_multiple(array(), array('sku' => $sku));

  return $products ? reset($products) : FALSE;

}

/**

 * Loads multiple products by ID or based on a set of matching conditions.

 *

 * @see entity_load()

 *

 * @param $product_ids

 *   An array of product IDs.

 * @param $conditions

 *   An array of conditions on the {commerce_product} table in the form

 *     'field' => $value.

 * @param $reset

 *   Whether to reset the internal product loading cache.

 *

 * @return

 *   An array of product objects indexed by product_id.

 */

function commerce_product_load_multiple($product_ids = array(), $conditions = array(), $reset = FALSE) {

  if (empty($product_ids) && empty($conditions)) {

    return array();

  }

  return entity_load('commerce_product', $product_ids, $conditions, $reset);

}

/**

 * Determines whether or not the give product can be deleted.

 *

 * @param $product

 *   The product to be checked for deletion.

 *

 * @return

 *   Boolean indicating whether or not the product can be deleted.

 */

function commerce_product_can_delete($product) {

  // Return FALSE if the given product does not have an ID; it need not be

  // deleted, which is functionally equivalent to cannot be deleted as far as

  // code depending on this function is concerned.

  if (empty($product->product_id)) {

    return FALSE;

  }

  // If any module implementing hook_commerce_product_can_delete() returns FALSE

  // the product cannot be deleted. Return TRUE if none return FALSE.

  return !in_array(FALSE, module_invoke_all('commerce_product_can_delete', $product));

}

/**

 * Deletes a product by ID.

 *

 * @param $product_id

 *   The ID of the product to delete.

 *

 * @return

 *   TRUE on success, FALSE otherwise.

 */

function commerce_product_delete($product_id) {

  return commerce_product_delete_multiple(array($product_id));

}

/**

 * Deletes multiple products by ID.

 *

 * @param $product_ids

 *   An array of product IDs to delete.

 *

 * @return

 *   TRUE on success, FALSE otherwise.

 */

function commerce_product_delete_multiple($product_ids) {

  return entity_get_controller('commerce_product')->delete($product_ids);

}

/**

 * Checks product access for various operations.

 *

 * @param $op

 *   The operation being performed. One of 'view', 'update', 'create' or

 *   'delete'.

 * @param $product

 *   Optionally a product to check access for or for the create operation the

 *   product type. If nothing is given access permissions for all products are returned.

 * @param $account

 *   The user to check for. Leave it to NULL to check for the current user.

 */

function commerce_product_access($op, $product = NULL, $account = NULL) {

  return commerce_entity_access($op, $product, $account, 'commerce_product');

}

/**

 * Implements hook_query_TAG_alter().

 */

function commerce_product_query_commerce_product_access_alter(QueryAlterableInterface $query) {

  return commerce_entity_access_query_alter($query, 'commerce_product');

}

/**

 * Performs token replacement on a SKU for valid tokens only.

 *

 * TODO: This function currently limits acceptable Tokens to Product ID and type

 * with no ability to use Tokens for the Fields attached to the product. That

 * might be fine for a core Token replacement, but we should at least open the

 * $valid_tokens array up to other modules to enable various Tokens for use.

 *

 * @param $sku

 *   The raw SKU string including any tokens as entered.

 * @param $product

 *   A product object used to perform token replacement on the SKU.

 *

 * @return

 *   The SKU with tokens replaced or else FALSE if it included invalid tokens.

 */

function commerce_product_replace_sku_tokens($sku, $product) {

  // Build an array of valid SKU tokens.

  $valid_tokens = array('product-id', 'type');

  // Ensure that only valid tokens were used.

  $invalid_tokens = FALSE;

  foreach (token_scan($sku) as $type => $token) {

    if ($type !== 'product') {

      $invalid_tokens = TRUE;

    }

    else {

      foreach (array_keys($token) as $value) {

        if (!in_array($value, $valid_tokens)) {

          $invalid_tokens = TRUE;

        }

      }

    }

  }

  // Register the error if an invalid token was detected.

  if ($invalid_tokens) {

    return FALSE;

  }

  return $sku;

}

/**

 * Checks to see if a given SKU already exists for another product.

 *

 * @param $sku

 *   The string to match against existing SKUs.

 * @param $product_id

 *   The ID of the product the SKU is for; an empty value represents the SKU is

 *     meant for a new product.

 *

 * @return

 *   TRUE or FALSE indicating whether or not the SKU exists for another product.

 */

function commerce_product_validate_sku_unique($sku, $product_id) {

  // Look for an ID of a product matching the supplied SKU.

  if ($match_id = db_query('SELECT product_id FROM {commerce_product} WHERE sku = :sku', array(':sku' => $sku))->fetchField()) {

    // If this SKU is supposed to be for a new product or a product other than

    // the one that matched...

    if (empty($product_id) || $match_id != $product_id) {

      return FALSE;

    }

  }

  return TRUE;

}

/**

 * Checks to ensure a given SKU does not contain invalid characters.

 *

 * @param $sku

 *   The string to validate as a SKU.

 *

 * @return

 *   TRUE or FALSE indicating whether or not the SKU is valid.

 */

function commerce_product_validate_sku($sku) {

  // Do not allow commas in a SKU.

  if (strpos($sku, ',')) {

    return FALSE;

  }

  return TRUE;

}

/**

 * Callback for getting product properties.

 * @see commerce_product_entity_property_info()

 */

function commerce_product_get_properties($product, array $options, $name) {

  switch ($name) {

    case 'creator':

      return $product->uid;

    case 'edit_url':

      return url('admin/commerce/products/' . $product->product_id . '/edit', $options);

  }

}

/**

 * Callback for setting product properties.

 * @see commerce_product_entity_property_info()

 */

function commerce_product_set_properties($product, $name, $value) {

  if ($name == 'creator') {

    $product->uid = $value;

  }

}

/**

 * Returns output for product autocompletes.

 *

 * The values returned will be keyed by SKU and appear as such in the textfield,

 * even though the preview in the autocomplete list shows "SKU: Title".

 */

function commerce_product_autocomplete($entity_type, $field_name, $bundle, $string = '') {

  $field = field_info_field($field_name);

  $instance = field_info_instance($entity_type, $field_name, $bundle);

  $matches = array();

  // Extract the SKU string from the URL while preserving support for SKUs that

  // contain slashes. Whereas we previously relied on the $string parameter, its

  // value was being truncated when any SKUs in the autocomplete widget had a /.

  // @see http://drupal.org/node/1962144

  $args = explode('/', request_path());

  if (count($args) <= 5) {

    drupal_json_output($matches);

    return;

  }

  // Trim off leading arguments from other modules such as Locale.

  $offset = array_search('commerce_product', $args);

  array_splice($args, 0, 5 + $offset);

  $string = implode('/', $args);

  // The user enters a comma-separated list of tags. We only autocomplete the last tag.

  $tags_typed = drupal_explode_tags($string);

  $tag_last = drupal_strtolower(array_pop($tags_typed));

  if (!empty($tag_last)) {

    $prefix = count($tags_typed) ? implode(', ', $tags_typed) . ', ' : '';

    // Determine the type of autocomplete match to use when searching for products.

    $match = isset($field['widget']['autocomplete_match']) ? $field['widget']['autocomplete_match'] : 'contains';

    // Get an array of matching products.

    $products = commerce_product_match_products($field, $instance, $tag_last, $match, array(), 10);

    // Loop through the products and convert them into autocomplete output.

    foreach ($products as $product_id => $data) {

      $matches[$prefix . $data['sku']] = $data['rendered'];

    }

  }

  drupal_json_output($matches);

}

/**

 * Fetches an array of all products matching the given parameters.

 *

 * This info is used in various places (allowed values, autocomplete results,

 * input validation...). Some of them only need the product_ids, others

 * product_id + titles, others yet product_id + titles + rendered row (for

 * display in widgets).

 *

 * The array we return contains all the potentially needed information,

 * and lets calling functions use the parts they actually need.

 *

 * @param $field

 *   The field description.

 * @param $string

 *   Optional string to filter SKUs and titles on (used by autocomplete).

 * @param $match

 *   Operator to match filtered SKUs and titles against, can be any of:

 *   'contains', 'equals', 'starts_with'

 * @param $ids

 *   Optional product ids to lookup (used when $string and $match arguments are

 *   not given).

 * @param $limit

 *   If non-zero, limit the size of the result set.

 * @param $access_tag

 *   Boolean indicating whether or not an access control tag should be added to

 *   the query to find matching product data. Defaults to FALSE.

 *

 * @return

 *   An array of valid products in the form:

 *   array(

 *     product_id => array(

 *       'product_sku' => The product SKU,

 *       'title' => The product title,

 *       'rendered' => The text to display in widgets (can be HTML)

 *     ),

 *     ...

 *   )

 */

function commerce_product_match_products($field, $instance = NULL, $string = '', $match = 'contains', $ids = array(), $limit = NULL, $access_tag = FALSE) {

  $results = &drupal_static(__FUNCTION__, array());

  // Create unique id for static cache.

  $cid = implode(':', array(

    $field['field_name'],

    $match,

    ($string !== '' ? $string : implode('-', $ids)),

    $limit,

  ));

  if (!isset($results[$cid])) {

    $matches = _commerce_product_match_products_standard($instance, $string, $match, $ids, $limit, $access_tag);

    // Store the results.

    $results[$cid] = !empty($matches) ? $matches : array();

  }

  return $results[$cid];

}

/**

 * Helper function for commerce_product_match_products().

 *

 * Returns an array of products matching the specific parameters.

 */

function _commerce_product_match_products_standard($instance, $string = '', $match = 'contains', $ids = array(), $limit = NULL, $access_tag = FALSE) {

  $query = new EntityFieldQuery;

  $query->entityCondition('entity_type', 'commerce_product');

  // Add the access control tag if specified.

  if ($access_tag) {

    $query->addTag('commerce_product_access');

  }

  // Add a global query tag so anyone can alter this query.

  $query->addTag('commerce_product_match');

  // Add a condition to the query to filter by matching product types.

  if (!empty($instance['settings']['referenceable_types'])) {

    $types = array_diff(array_values($instance['settings']['referenceable_types']), array(0, NULL));

    // Only filter by type if some types have been specified.

    if (!empty($types)) {

      $query->propertyCondition('type', $types, 'IN');

    }

  }

  if ($string !== '') {

    // EntityFieldQuery cannot do OR clauses, so we use hook_query_TAG_alter.

    $query->addTag('commerce_sku_or_title_match');

    $sku_title_meta = new stdClass();

    $sku_title_meta->properties = array(

      'sku',

      'title',

    );

    $sku_title_meta->string = $string;

    $sku_title_meta->match = $match;

    $query->addMetaData('commerce_sku_or_title_match', $sku_title_meta);

  }

  elseif ($ids) {

    // Otherwise add a product_id specific condition if specified.

    $query->propertyCondition('product_id', $ids, 'IN');

  }

  // Order the results by SKU, title, and then product type.

  $query

    ->propertyOrderBy('sku')

    ->propertyOrderBy('title')

    ->propertyOrderBy('type');

  // Add a limit if specified.

  if ($limit) {

    $query->range(0, $limit);

  }

  $entities = $query->execute();

  $matches = array();

  if (isset($entities['commerce_product'])) {

    $pids = array_keys($entities['commerce_product']);

    // EntityFieldQuery doesn't return sku and title, so we have to load again.

    $products = commerce_product_load_multiple($pids);

    foreach ($products AS $product) {

      $matches[$product->product_id] = array(

        'sku' => $product->sku,

        'type' => $product->type,

        'title' => $product->title,

        'rendered' => t('@sku: @title', array('@sku' => $product->sku, '@title' => $product->title)),

      );

    }

  }

  return $matches;

}

/**

 * Implements hook_query_TAG_alter.

 *

 * EntityFieldQuery used in _commerce_product_match_products_standard() does not

 * allow OR clauses. Alter the SQL query to string match on sku OR title.

 *

 * @param QueryAlterableInterface $query

 */

function commerce_product_query_commerce_sku_or_title_match_alter(QueryAlterableInterface $query) {

  $string = $query->alterMetaData['commerce_sku_or_title_match']->string;

  $match = $query->alterMetaData['commerce_sku_or_title_match']->match;

  if (isset($string, $match)) {

    // Build a where clause matching on either the SKU or title.

    switch ($match) {

      case 'contains':

        $or = db_or()->condition('sku', '%' . $string . '%', 'LIKE')

          ->condition('title', '%' . $string . '%', 'LIKE');

        break;

      case 'starts_with':

        $or = db_or()->condition('sku', $string . '%', 'LIKE')

          ->condition('title', $string . '%', 'LIKE');

        break;

      case 'equals':

      default:

        $or = db_or()->condition('sku', $string, '=')

          ->condition('title', $string, '=');

        break;

    }

    $query->condition($or);

  }

}

/**

 * Access callback: determines access to a product's translation tab.

 */

function commerce_product_entity_translation_tab_access($product) {

  return entity_translation_tab_access('commerce_product', $product);

}

/**

 * Returns whether the given product type has support for translations.

 *

 * @param $type

 *   The machine-name of the product type to check for translation support.

 *

 * @return

 *   TRUE or FALSE indicating translation support for the requested type.

 */

function commerce_product_entity_translation_supported_type($type) {

  return variable_get('language_product_type_' . $type, 0) == ENTITY_TRANSLATION_ENABLED;

}

/**

 * Sanitizes the product SKU before output.

 */

function template_preprocess_commerce_product_sku(&$variables) {

  $variables['sku'] = check_plain($variables['sku']);

}

/**

 * Sanitizes the product title before output.

 */

function template_preprocess_commerce_product_title(&$variables) {

  $variables['title'] = check_plain($variables['title']);

}

/**

 * Returns the options list for the product status property.

 */

function commerce_product_status_options_list() {

  return array(

    0 => t('Disabled'),

    1 => t('Active'),

  );

}

/**

 * Converts the product status integer to a string before output.

 */

function template_preprocess_commerce_product_status(&$variables) {

  $variables['status'] = empty($variables['status']) ? t('Disabled') : t('Active');

}