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root / htmltest / sites / all / modules / commerce / commerce.module @ 011029ce

       <?php
       /**
        * @file
        * Defines features and functions common to the Commerce modules.
        */
       // Define our own rounding constants since we can't depend on PHP 5.3.
       define('COMMERCE_ROUND_NONE', 0);
       define('COMMERCE_ROUND_HALF_UP', 1);
       define('COMMERCE_ROUND_HALF_DOWN', 2);
       define('COMMERCE_ROUND_HALF_EVEN', 3);
       define('COMMERCE_ROUND_HALF_ODD', 4);
       /**
        * Implements hook_permission().
        */
       function commerce_permission() {
         $permissions = array(
           'configure store' => array(
             'title' => t('Configure store settings'),
             'description' => t('Allows users to update store currency and contact settings.'),
             'restrict access' => TRUE,
           ),
         );
         return $permissions;
+      }
       /**
        * Implements hook_hook_info().
        */
       function commerce_hook_info() {
         $hooks = array(
           'commerce_currency_info' => array(
             'group' => 'commerce',
           ),
           'commerce_currency_info_alter' => array(
             'group' => 'commerce',
           ),
           'commerce_entity_access' => array(
             'group' => 'commerce',
           ),
           'commerce_entity_access_condition_alter' => array(
             'group' => 'commerce',
           ),
           'commerce_entity_create_alter' => array(
             'group' => 'commerce',
           ),
         );
         return $hooks;
+      }
       /**
        * Implements hook_system_info_alter().
+       *
        * Drupal's Field module doesn't allow field type providing modules to be
        * disabled while fields and instances of those types exist in the system.
        * See http://drupal.org/node/943772 for further explanation.
+       *
        * That approach doesn't work for Commerce, creating circular dependencies
        * and making uninstall impossible. This function removes the requirement,
        * allowing Commerce to implement its own workaround.
+       *
        * @see commerce_delete_field()
        */
       function commerce_system_info_alter(&$info, $file, $type) {
         $modules = array(
           'commerce_product_reference',
           'commerce_price',
           'commerce_customer',
           'commerce_line_item',
         );
         if ($type == 'module' && in_array($file->name, $modules)) {
           unset($info['required']);
           unset($info['explanation']);
+        }
+      }
       /**
        * Finds all fields of a particular field type.
+       *
        * @param $field_type
        *   The type of field to search for.
        * @param $entity_type
        *   Optional entity type to restrict the search to.
+       *
        * @return
        *   An array of the matching fields keyed by the field name.
        */
       function commerce_info_fields($field_type, $entity_type = NULL) {
         $fields = array();
         // Loop through the fields looking for any fields of the specified type.
         foreach (field_info_fields() as $field_name => $field) {
           if ($field['type'] == $field_type) {
             // Add this field to the return array if no entity type was specified or
             // if the specified type exists in the field's bundles array.
             if (empty($entity_type) || in_array($entity_type, array_keys($field['bundles']))) {
               $fields[$field_name] = $field;
+            }
+          }
+        }
         return $fields;
+      }
       /**
        * Deletes a reference to another entity from an entity with a reference field.
+       *
        * @param $entity
        *   The entity that contains the reference field.
        * @param $field_name
        *   The name of the entity reference field.
        * @param $col_name
        *   The name of the column in the field's schema containing the referenced
        *   entity's ID.
        * @param $ref_entity_id
        *   The ID of the entity to delete from the reference field.
        */
       function commerce_entity_reference_delete($entity, $field_name, $col_name, $ref_entity_id) {
         // Exit now if the entity does not have the expected field.
         if (empty($entity->{$field_name})) {
           return;
+        }
         // Loop over each of the field's items in every language.
         foreach ($entity->{$field_name} as $langcode => $items) {
           $rekey = FALSE;
           foreach ($items as $delta => $item) {
             // If the item references the specified entity...
             if (!empty($item[$col_name]) && $item[$col_name] == $ref_entity_id) {
               // Unset the reference.
               unset($entity->{$field_name}[$langcode][$delta]);
               $rekey = TRUE;
+            }
+          }
           if ($rekey) {
             // Rekey the field items if necessary.
             $entity->{$field_name}[$langcode] = array_values($entity->{$field_name}[$langcode]);
             // If the reference field is empty, wipe its data altogether.
             if (count($entity->{$field_name}[$langcode]) == 0) {
               unset($entity->{$field_name}[$langcode]);
+            }
+          }
+        }
+      }
       /**
        * Attempts to directly activate a field that was disabled due to its module
        * being disabled.
+       *
        * The normal API function for updating fields, field_update_field(), will not
        * work on disabled fields. As a workaround, this function directly updates the
        * database, but it is up to the caller to clear the cache.
+       *
        * @param $field_name
        *   The name of the field to activate.
+       *
        * @return
        *   Boolean indicating whether or not the field was activated.
        */
       function commerce_activate_field($field_name) {
         // Set it to active via a query because field_update_field() does
         // not work on inactive fields.
         $updated = db_update('field_config')
           ->fields(array('active' => 1))
           ->condition('field_name', $field_name, '=')
           ->condition('deleted', 0, '=')
           ->execute();
         return !empty($updated) ? TRUE : FALSE;
+      }
       /**
        * Enables and deletes fields of the specified type.
+       *
        * @param $type
        *   The type of fields to enable and delete.
+       *
        * @see commerce_delete_field()
        */
       function commerce_delete_fields($type) {
         // Read the fields for any active or inactive field of the specified type.
         foreach (field_read_fields(array('type' => $type), array('include_inactive' => TRUE)) as $field_name => $field) {
           commerce_delete_field($field_name);
+        }
+      }
       /**
        * Enables and deletes the specified field.
+       *
        * The normal API function for deleting fields, field_delete_field(), will not
        * work on disabled fields. As a workaround, this function first activates the
        * fields of the specified type and then deletes them.
+       *
        * @param $field_name
        *   The name of the field to enable and delete.
        */
       function commerce_delete_field($field_name) {
         // In case the field is inactive, first activate it and clear the field cache.
         if (commerce_activate_field($field_name)) {
           field_cache_clear();
+        }
         // Delete the field.
         field_delete_field($field_name);
+      }
       /**
        * Deletes any field instance attached to entities of the specified type,
        * regardless of whether or not the field is active.
+       *
        * @param $entity_type
        *   The type of entity whose fields should be deleted.
        * @param $bundle
        *   Optionally limit instance deletion to a specific bundle of the specified
        *   entity type.
        */
       function commerce_delete_instances($entity_type, $bundle = NULL) {
         // Prepare a parameters array to load the specified instances.
         $params = array(
           'entity_type' => $entity_type,
         );
         if (!empty($bundle)) {
           $params['bundle'] = $bundle;
           // Delete this bundle's field bundle settings.
           variable_del('field_bundle_settings_' . $entity_type . '__' . $bundle);
+        }
         else {
           // Delete all field bundle settings for this entity type.
           db_delete('variable')
             ->condition('name', db_like('field_bundle_settings_' . $entity_type . '__') . '%', 'LIKE')
             ->execute();
+        }
         // Read and delete the matching field instances.
         foreach (field_read_instances($params, array('include_inactive' => TRUE)) as $instance) {
           commerce_delete_instance($instance);
+        }
+      }
       /**
        * Deletes the specified instance and handles field cleanup manually in case the
        * instance is of a disabled field.
+       *
        * @param $instance
        *   The field instance info array to be deleted.
        */
       function commerce_delete_instance($instance) {
         // First activate the instance's field if necessary.
         $field_name = $instance['field_name'];
         $activated = commerce_activate_field($field_name);
         // Clear the field cache if we just activated the field.
         if ($activated) {
           field_cache_clear();
+        }
         // Then delete the instance.
         field_delete_instance($instance, FALSE);
         // Now check to see if there are any other instances of the field left.
         $field = field_info_field($field_name);
         if (count($field['bundles']) == 0) {
           field_delete_field($field_name);
+        }
         elseif ($activated) {
           // If there are remaining instances but the field was originally disabled,
           // disabled it again now.
           $field['active'] = 0;
           field_update_field($field);
+        }
+      }
       /**
        * Makes any required form elements in a form unrequired.
+       *
        * @param $form
        *   The form array to search for required elements.
        */
       function commerce_unrequire_form_elements(&$form) {
         array_walk_recursive($form, '_commerce_unrequire_element');
+      }
       /**
        * array_walk_recursive callback: makes an individual element unrequired.
+       *
        * @param &$value
        *   The value of the form array being walked.
        * @param $key
        *   The key of the form array corresponding to the present value.
        */
       function _commerce_unrequire_element(&$value, $key) {
         if ($key === '#required') {
           $value = FALSE;
+        }
+      }
       /**
        * Returns the callback for a form ID as defined by hook_forms().
+       *
        * @param $form_id
        *   The form ID to find the callback for.
        * @return
        *   A string containing the form's callback function name.
+       *
        * @see drupal_retrieve_form()
        * @see hook_forms()
        */
       function commerce_form_callback($form_id, $form_state) {
         // If a function named after the $form_id does not exist, look for its
         // definition in hook_forms().
         if (!function_exists($form_id)) {
           $forms = &drupal_static(__FUNCTION__);
           // In cases where many form_ids need to share a central builder function,
           // such as the product editing form, modules can implement hook_forms(). It
           // maps one or more form_ids to the correct constructor functions.
           if (!isset($forms) || !isset($forms[$form_id])) {
             $forms = module_invoke_all('forms', $form_id, $form_state['build_info']['args']);
+          }
           if (isset($forms[$form_id]['callback'])) {
             return $forms[$form_id]['callback'];
+          }
+        }
         return $form_id;
+      }
       /**
        * Renders a View for display in some other element.
+       *
        * @param $view_key
        *   The ID of the View to embed.
        * @param $display_id
        *   The ID of the display of the View that will actually be rendered.
        * @param $arguments
        *   An array of arguments to pass to the View.
        * @param $override_url
        *   A url that overrides the url of the current view.
+       *
        * @return
        *   The rendered output of the chosen View display.
        */
       function commerce_embed_view($view_id, $display_id, $arguments, $override_url = '') {
         // Load the specified View.
         $view = views_get_view($view_id);
         $view->set_display($display_id);
         // Set the specific arguments passed in.
         $view->set_arguments($arguments);
         // Override the view url, if an override was provided.
         if (!empty($override_url)) {
           $view->override_url = $override_url;
+        }
         // Prepare and execute the View query.
         $view->pre_execute();
         $view->execute();
         // Return the rendered View.
         return $view->render();
+      }
       /**
        * Returns the e-mail address from which to send commerce related e-mails.
+       *
        * Currently this is just using the site's e-mail address, but this may be
        * updated to use a specific e-mail address when we add a settings form for the
        * store's physical address and contact information.
        */
       function commerce_email_from() {
         return variable_get('site_mail', ini_get('sendmail_from'));
+      }
       /**
        * Translate a data structure using i18n_string, if available.
+       *
        * @param $type
        *   The i18n object type.
        * @param $object
        *   The object or array to translate.
        * @param $options
        *   An array of options passed along to i18n.
+       *
        * @return
        *   The translated data structure if i18_string is available, the original
        *   otherwise.
+       *
        * @see i18n_string_object_translate()
        */
       function commerce_i18n_object($type, $object, $options = array()) {
         // Clone the object, to ensure the original remains untouched.
         if (is_object($object)) {
           $object = clone $object;
+        }
         if (module_exists('i18n_string')) {
           return i18n_string_object_translate($type, $object, $options);
+        }
         else {
           return $object;
+        }
+      }
       /**
        * Implements hook_i18n_string_info().
        */
       function commerce_i18n_string_info() {
         $groups['commerce'] = array(
           'title' => t('Drupal Commerce'),
           'format' => TRUE,
         );
         return $groups;
+      }
       /**
        * Translate a string using i18n_string, if available.
+       *
        * @param $name
        *   Textgroup and context glued with ':'.
        * @param $default
        *   String in default language. Default language may or may not be English.
        * @param $options
        *   An associative array of additional options, with the following keys:
        *   - langcode: the language code to translate to a language other than what is
        *     used to display the page; defaults to the current language
        *   - filter: filtering callback to apply to the translated string only
        *   - format: input format to apply to the translated string only
        *   - callback: callback to apply to the result (both to the translated or
        *     untranslated string)
        *   - update: whether to update source table; defaults to FALSE
        *   - translate: whether to return a translation; defaults to TRUE
+       *
        * @return
        *   The translated string if i18n_string is available, the original otherwise.
+       *
        * @see i18n_string()
        */
       function commerce_i18n_string($name, $default, $options = array()) {
         if (module_exists('i18n_string')) {
           $result = i18n_string($name, $default, $options);
+        }
         else {
           $result = $default;
           $options += array(
             'format' => NULL,
             'sanitize' => FALSE,
           );
           if ($options['sanitize']) {
             $result = check_markup($result, $options['format']);
+          }
+        }
         return $result;
+      }
       /**
        * Returns the currency code of the site's default currency.
        */
       function commerce_default_currency() {
         return variable_get('commerce_default_currency', 'USD');
+      }
       /**
        * Returns a single currency array.
+       *
        * @param $currency_code
        *   The code of the currency to return or NULL to return the default currency.
+       *
        * @return
        *   The specified currency array or FALSE if it does not exist.
        */
       function commerce_currency_load($currency_code = NULL) {
         $currencies = commerce_currencies();
         // Check to see if we should return the default currency.
         if (empty($currency_code)) {
           $currency_code = commerce_default_currency();
+        }
         return isset($currencies[$currency_code]) ? $currencies[$currency_code] : FALSE;
+      }
       /**
        * Returns an array of all available currencies.
+       *
        * @param $enabled
        *   Boolean indicating whether or not to return only enabled currencies.
        * @param $reset
        *   Boolean indicating whether or not the cache should be reset before currency
        *     data is loaded and returned.
+       *
        * @return
        *   An array of altered currency arrays keyed by the currency code.
        */
       function commerce_currencies($enabled = FALSE, $reset = FALSE) {
         global $language;
         $currencies = &drupal_static(__FUNCTION__);
         // If there is no static cache for currencies yet or a reset was specified...
         if (!isset($currencies) || $reset) {
           // First attempt to load currency data from the cache if we simply didn't
           // have it statically cached and a reset hasn't been specified.
           if (!$reset && $currencies_cached = cache_get('commerce_currencies:' . $language->language)) {
             $currencies['all'] = $currencies_cached->data;
+          }
           else {
             // Otherwise we'll load currency definitions afresh from enabled modules.
             // Begin by establishing some default values for currencies.
             $defaults = array(
               'symbol' => '',
               'minor_unit' => '',
               'decimals' => 2,
               'rounding_step' => 0,
               'thousands_separator' => ',',
               'decimal_separator' => '.',
               'symbol_placement' => 'hidden',
               'symbol_spacer' => ' ',
               'code_placement' => 'after',
               'code_spacer' => ' ',
               'format_callback' => '',
               'conversion_callback' => '',
               'conversion_rate' => 1,
             );
             // Include the currency file and invoke the currency info hook.
             module_load_include('inc', 'commerce', 'includes/commerce.currency');
             $currencies['all'] = module_invoke_all('commerce_currency_info');
             drupal_alter('commerce_currency_info', $currencies['all']);
             // Add default values if they don't exist.
             foreach ($currencies['all'] as $currency_code => $currency) {
               $currencies['all'][$currency_code] = array_merge($defaults, $currency);
+            }
             // Sort the currencies
             ksort($currencies['all']);
             cache_set('commerce_currencies:' . $language->language, $currencies['all']);
+          }
           // Form an array of enabled currencies based on the variable set by the
           // checkboxes element on the currency settings form.
           $enabled_currencies = array_diff(array_values(variable_get('commerce_enabled_currencies', array('USD' => 'USD'))), array(0));
           $currencies['enabled'] = array_intersect_key($currencies['all'], drupal_map_assoc($enabled_currencies));
+        }
         return $enabled ? $currencies['enabled'] : $currencies['all'];
+      }
       /**
        * Returns an associative array of the specified currency codes.
+       *
        * @param $enabled
        *   Boolean indicating whether or not to include only enabled currencies.
        */
       function commerce_currency_get_code($enabled = FALSE) {
         return drupal_map_assoc(array_keys(commerce_currencies($enabled)));
+      }
       /**
        * Wraps commerce_currency_get_code() for use by the Entity module.
        */
       function commerce_currency_code_options_list() {
         return commerce_currency_get_code(TRUE);
+      }
       /**
        * Returns the symbol of any or all currencies.
+       *
        * @param $code
        *   Optional parameter specifying the code of the currency whose symbol to return.
+       *
        * @return
        *   Either an array of all currency symbols keyed by the currency code or a
        *     string containing the symbol for the specified currency. If a currency is
        *     specified that does not exist, this function returns FALSE.
        */
       function commerce_currency_get_symbol($currency_code = NULL) {
         $currencies = commerce_currencies();
         // Return a specific currency symbol if specified.
         if (!empty($currency_code)) {
           if (isset($currencies[$currency_code])) {
             return $currencies[$currency_code]['symbol'];
+          }
           else {
             return FALSE;
+          }
+        }
         // Otherwise turn the array values into the type name only.
         foreach ($currencies as $currency_code => $currency) {
           $currencies[$currency_code] = $currency['symbol'];
+        }
         return $currencies;
+      }
       /**
        * Formats a price for a particular currency.
+       *
        * @param $amount
        *   A numeric price amount value.
        * @param $currency_code
        *   The three character code of the currency.
        * @param $object
        *   When present, the object to which the price is attached.
        * @param $convert
        *   Boolean indicating whether or not the amount needs to be converted to a
        *   decimal price amount when formatting.
+       *
        * @return
        *   A fully formatted currency.
        */
       function commerce_currency_format($amount, $currency_code, $object = NULL, $convert = TRUE) {
         // First load the currency array.
         $currency = commerce_currency_load($currency_code);
         // Then convert the price amount to the currency's major unit decimal value.
         if ($convert == TRUE) {
           $amount = commerce_currency_amount_to_decimal($amount, $currency_code);
+        }
         // Invoke the custom format callback if specified.
         if (!empty($currency['format_callback'])) {
           return $currency['format_callback']($amount, $currency, $object);
+        }
         // Format the price as a number.
         $price = number_format(commerce_currency_round(abs($amount), $currency), $currency['decimals'], $currency['decimal_separator'], $currency['thousands_separator']);
         // Establish the replacement values to format this price for its currency.
         $replacements = array(
           '@code_before' => $currency['code_placement'] == 'before' ? $currency['code'] : '',
           '@symbol_before' => $currency['symbol_placement'] == 'before' ? $currency['symbol'] : '',
           '@price' => $price,
           '@symbol_after' => $currency['symbol_placement'] == 'after' ? $currency['symbol'] : '',
           '@code_after' => $currency['code_placement'] == 'after' ? $currency['code'] : '',
           '@negative' => $amount < 0 ? '-' : '',
           '@symbol_spacer' => $currency['symbol_spacer'],
           '@code_spacer' => $currency['code_spacer'],
         );
         return trim(t('@code_before@code_spacer@negative@symbol_before@price@symbol_spacer@symbol_after@code_spacer@code_after', $replacements));
+      }
       /**
        * Rounds a price amount for the specified currency.
+       *
        * Rounding of the minor unit with a currency specific step size. For example,
        * Swiss Francs are rounded using a step size of 0.05. This means a price of
        * 10.93 is converted to 10.95.
+       *
        * @param $amount
        *   The numeric amount value of the price to be rounded.
        * @param $currency
        *   The currency array containing the rounding information pertinent to this
        *     price. Specifically, this function looks for the 'rounding_step' property
        *     for the step size to round to, supporting '0.05' and '0.02'. If the value
        *     is 0, this function performs normal rounding to the nearest supported
        *     decimal value.
+       *
        * @return
        *   The rounded numeric amount value for the price.
        */
       function commerce_currency_round($amount, $currency) {
         if (!$currency['rounding_step']) {
           return round($amount, $currency['decimals']);
+        }
         $modifier = 1 / $currency['rounding_step'];
         return round($amount * $modifier) / $modifier;
+      }
       /**
        * Converts a price amount from a currency to the target currency based on the
        *   current currency conversion rates.
+       *
        * The Commerce module establishes a default conversion rate for every currency
        * as 1, so without any additional information there will be a 1:1 conversion
        * from one currency to the next. Other modules can provide UI based or web
        * service based alterations to the conversion rate of the defined currencies as
        * long as every rate is calculated relative to a single base currency. It does
        * not matter which currency is the base currency as long as the same one is
        * used for every rate calculation.
+       *
        * To convert an amount from one currency to another, we simply take the amount
        * value and multiply it by the current currency's conversion rate divided by
        * the target currency's conversion rate.
+       *
        * @param $amount
        *   The numeric amount value of the price to be rounded.
        * @param $currency_code
        *   The currency code for the current currency of the price.
        * @param $target_currency_code
        *   The currency code for the target currency of the price.
+       *
        * @return
        *   The numeric amount value converted to its equivalent in the target currency.
        */
       function commerce_currency_convert($amount, $currency_code, $target_currency_code) {
         $currency = commerce_currency_load($currency_code);
         // Invoke the custom conversion callback if specified.
         if (!empty($currency['conversion_callback'])) {
           return $currency['conversion_callback']($amount, $currency_code, $target_currency_code);
+        }
         $target_currency = commerce_currency_load($target_currency_code);
         // First multiply the amount to accommodate differences in decimals between
         // the source and target currencies.
         $exponent = $target_currency['decimals'] - $currency['decimals'];
         $amount *= pow(10, $exponent);
         return $amount * ($currency['conversion_rate'] / $target_currency['conversion_rate']);
+      }
       /**
        * Converts a price amount to an integer value for storage in the database.
+       *
        * @param $decimal
        *   The decimal amount to convert to a price amount.
        * @param $currency_code
        *   The currency code of the price whose decimals value will be used to
        *     multiply by the proper factor when converting the decimal amount.
        * @param $round
        *   Whether or not the return value should be rounded and cast to an integer;
        *     defaults to TRUE as necessary for standard price amount column storage.
+       *
        * @return
        *   The appropriate price amount based on the currency's decimals value.
        */
       function commerce_currency_decimal_to_amount($decimal, $currency_code, $round = TRUE) {
         static $factors;
         // If the divisor for this currency hasn't been calculated yet...
         if (empty($factors[$currency_code])) {
           // Load the currency and calculate its factor as a power of 10.
           $currency = commerce_currency_load($currency_code);
           $factors[$currency_code] = pow(10, $currency['decimals']);
+        }
         // Ensure the amount has the proper number of decimal places for the currency.
         if ($round) {
           $decimal = commerce_currency_round($decimal, commerce_currency_load($currency_code));
           return (int) round($decimal * $factors[$currency_code]);
+        }
         else {
           return $decimal * $factors[$currency_code];
+        }
+      }
       /**
        * Converts a price amount to a decimal value based on the currency.
+       *
        * @param $amount
        *   The price amount to convert to a decimal value.
        * @param $currency_code
        *   The currency code of the price whose decimals value will be used to
        *     divide by the proper divisor when converting the amount.
+       *
        * @return
        *   The decimal amount depending on the number of places the currency uses.
        */
       function commerce_currency_amount_to_decimal($amount, $currency_code) {
         static $divisors;
         // If the divisor for this currency hasn't been calculated yet...
         if (empty($divisors[$currency_code])) {
           // Load the currency and calculate its divisor as a power of 10.
           $currency = commerce_currency_load($currency_code);
           $divisors[$currency_code] = pow(10, $currency['decimals']);
+        }
         return $amount / $divisors[$currency_code];
+      }
       /**
        * Returns an associative array of month names keyed by numeric representation.
        */
       function commerce_months() {
         return array(
           '01' => t('January'),
           '02' => t('February'),
           '03' => t('March'),
           '04' => t('April'),
           '05' => t('May'),
           '06' => t('June'),
           '07' => t('July'),
           '08' => t('August'),
           '09' => t('September'),
           '10' => t('October'),
           '11' => t('November'),
           '12' => t('December'),
         );
+      }
       /**
        * Returns an array of numerical comparison operators for use in Rules.
        */
       function commerce_numeric_comparison_operator_options_list() {
         return drupal_map_assoc(array('<', '<=', '=', '>=', '>'));
+      }
       /**
        * Returns an options list of round modes.
        */
       function commerce_round_mode_options_list() {
         return array(
           COMMERCE_ROUND_NONE => t('Do not round at all'),
           COMMERCE_ROUND_HALF_UP => t('Round the half up'),
           COMMERCE_ROUND_HALF_DOWN => t('Round the half down'),
           COMMERCE_ROUND_HALF_EVEN => t('Round the half to the nearest even number'),
           COMMERCE_ROUND_HALF_ODD => t('Round the half to the nearest odd number'),
         );
+      }
       /**
        * Rounds a number using the specified rounding mode.
+       *
        * @param $round_mode
        *   The round mode specifying which direction to round the number.
        * @param $number
        *   The number to round.
+       *
        * @return
        *   The number rounded based on the specified mode.
+       *
        * @see commerce_round_mode_options_list()
        */
       function commerce_round($round_mode, $number) {
         // Remember if this is a negative or positive number and make it positive.
         $negative = $number < 0;
         $number = abs($number);
         // Store the decimal value of the number.
         $decimal = $number - floor($number);
         // No need to round if there is no decimal value.
         if ($decimal == 0) {
           return $negative ? -$number : $number;
+        }
         // Round it now according to the specified round mode.
         switch ($round_mode) {
           // PHP's round() function defaults to rounding the half up.
           case COMMERCE_ROUND_HALF_UP:
             $number = round($number);
             break;
           // PHP < 5.3.0 does not support rounding the half down, so we compare the
           // decimal value and use floor() / ceil() directly.
           case COMMERCE_ROUND_HALF_DOWN:
             if ($decimal <= .5) {
               $number = floor($number);
+            }
             else {
               $number = ceil($number);
+            }
             break;
           // PHP < 5.3.0 does not support rounding to the nearest even number, so we
           // determine it ourselves if the decimal is .5.
           case COMMERCE_ROUND_HALF_EVEN:
             if ($decimal == .5) {
               if (floor($number) % 2 == 0) {
                 $number = floor($number);
+              }
               else {
                 $number = ceil($number);
+              }
+            }
             else {
               $number = round($number);
+            }
             break;
           // PHP < 5.3.0 does not support rounding to the nearest odd number, so we
           // determine it ourselves if the decimal is .5.
           case COMMERCE_ROUND_HALF_ODD:
             if ($decimal == .5) {
               if (floor($number) % 2 == 0) {
                 $number = ceil($number);
+              }
               else {
                 $number = floor($number);
+              }
+            }
             else {
               $number = round($number);
+            }
             break;
           case COMMERCE_ROUND_NONE:
           default:
             break;
+        }
         // Return the number preserving the initial negative / positive value.
         return $negative ? -$number : $number;
+      }
       /**
        * Adds child elements to a SimpleXML element using the data provided.
+       *
        * @param $simplexml_element
        *   The SimpleXML element that will be populated with children from the child
        *   data array. This should already be initialized with its container element.
        * @param $child_data
        *   The array of data. It can be of any depth, but it only provides support for
        *   child elements and their values - not element attributes. If an element can
        *   have multiple child elements with the same name, you cannot depend on a
        *   simple associative array because of key collision. You must instead include
        *   each child element as a value array in a numerically indexed array.
        */
       function commerce_simplexml_add_children(&$simplexml_element, $child_data) {
         // Loop over all the child data...
         foreach ($child_data as $key => $value) {
           // If the current child is itself a container...
           if (is_array($value)) {
             // If it has a non-numeric key...
             if (!is_numeric($key)) {
               // Add a child element to the current element with the key as the name.
               $child_element = $simplexml_element->addChild("$key");
               // Add the value of this element to the child element.
               commerce_simplexml_add_children($child_element, $value);
+            }
             else {
               // Otherwise assume we have multiple child elements of the same name and
               // pass through to add the child data from the current value array to
               // current element.
               commerce_simplexml_add_children($simplexml_element, $value);
+            }
+          }
           else {
             // Otherwise add the child element with its simple value.
             $simplexml_element->addChild("$key", "$value");
+          }
+        }
+      }
       /**
        * Generic access control for Drupal Commerce entities.
+       *
        * @param $op
        *   The operation being performed. One of 'view', 'update', 'create' or
        *   'delete'.
        * @param $entity
        *   Optionally an entity to check access for. If no entity is given, it will be
        *   determined whether access is allowed for all entities of the given type.
        * @param $account
        *   The user to check for. Leave it to NULL to check for the global user.
        * @param $entity_type
        *   The entity type of the entity to check for.
+       *
        * @see entity_access()
        */
       function commerce_entity_access($op, $entity, $account, $entity_type) {
         global $user;
         $account = isset($account) ? $account : $user;
         $entity_info = entity_get_info($entity_type);
         if ($op == 'view') {
           if (isset($entity)) {
             // When trying to figure out access to an entity, query the base table using
             // our access control tag.
             if (!empty($entity_info['access arguments']['access tag']) && module_implements('query_' . $entity_info['access arguments']['access tag'] . '_alter')) {
               $query = db_select($entity_info['base table']);
               $query->addExpression('1');
               return (bool) $query
                 ->addTag($entity_info['access arguments']['access tag'])
                 ->addMetaData('account', $account)
                 ->condition($entity_info['entity keys']['id'], $entity->{$entity_info['entity keys']['id']})
                 ->range(0, 1)
                 ->execute()
                 ->fetchField();
+            }
             else {
               return TRUE;
+            }
+          }
           else {
             return user_access('view any ' . $entity_type . ' entity', $account);
+          }
+        }
         else {
           // First grant access to the entity for the specified operation if no other
           // module denies it and at least one other module says to grant access.
           $access_results = module_invoke_all('commerce_entity_access', $op, $entity, $account, $entity_type);
           if (in_array(FALSE, $access_results, TRUE)) {
             return FALSE;
+          }
           elseif (in_array(TRUE, $access_results, TRUE)) {
             return TRUE;
+          }
           // Grant generic administrator level access.
           if (user_access('administer ' . $entity_type . ' entities', $account)) {
             return TRUE;
+          }
           // Grant access based on entity type and bundle specific permissions with
           // special handling for the create operation since the entity passed in will
           // be initialized without ownership.
           if ($op == 'create') {
             // Assuming an entity was passed in and we know its bundle key, perform
             // the entity type and bundle-level access checks.
             if (isset($entity) && !empty($entity_info['entity keys']['bundle'])) {
               return user_access('create ' . $entity_type . ' entities', $account) || user_access('create ' . $entity_type . ' entities of bundle ' . $entity->{$entity_info['entity keys']['bundle']}, $account);
+            }
             else {
               // Otherwise perform an entity type-level access check.
               return user_access('create ' . $entity_type . ' entities', $account);
+            }
+          }
           else {
             // Next perform checks for the edit and delete operations. Begin by
             // extracting the bundle name from the entity if available.
             $bundle_name = '';
             if (isset($entity) && !empty($entity_info['entity keys']['bundle'])) {
               $bundle_name = $entity->{$entity_info['entity keys']['bundle']};
+            }
             // For the edit and delete operations, first perform the entity type and
             // bundle-level access check for any entity.
             if (user_access('edit any ' . $entity_type . ' entity', $account) ||
               user_access('edit any ' . $entity_type . ' entity of bundle ' . $bundle_name, $account)) {
               return TRUE;
+            }
             // Then check an authenticated user's access to edit his own entities.
             if ($account->uid && !empty($entity_info['access arguments']['user key']) && isset($entity->{$entity_info['access arguments']['user key']}) && $entity->{$entity_info['access arguments']['user key']} == $account->uid) {
               if (user_access('edit own ' . $entity_type . ' entities', $account) ||
                 user_access('edit own ' . $entity_type . ' entities of bundle ' . $bundle_name, $account)) {
                 return TRUE;
+              }
+            }
+          }
+        }
         return FALSE;
+      }
       /**
        * Return permission names for a given entity type.
        */
       function commerce_entity_access_permissions($entity_type) {
         $entity_info = entity_get_info($entity_type);
         $labels = $entity_info['permission labels'];
         $permissions = array();
         // General 'administer' permission.
         $permissions['administer ' . $entity_type . ' entities'] = array(
           'title' => t('Administer @entity_type', array('@entity_type' => $labels['plural'])),
           'description' => t('Allows users to perform any action on @entity_type.', array('@entity_type' => $labels['plural'])),
           'restrict access' => TRUE,
         );
         // Generic create and edit permissions.
         $permissions['create ' . $entity_type . ' entities'] = array(
           'title' => t('Create @entity_type of any type', array('@entity_type' => $labels['plural'])),
         );
         if (!empty($entity_info['access arguments']['user key'])) {
           $permissions['edit own ' . $entity_type . ' entities'] = array(
             'title' => t('Edit own @entity_type of any type', array('@entity_type' => $labels['plural'])),
           );
+        }
         $permissions['edit any ' . $entity_type . ' entity'] = array(
           'title' => t('Edit any @entity_type of any type', array('@entity_type' => $labels['singular'])),
           'restrict access' => TRUE,
         );
         if (!empty($entity_info['access arguments']['user key'])) {
           $permissions['view own ' . $entity_type . ' entities'] = array(
             'title' => t('View own @entity_type of any type', array('@entity_type' => $labels['plural'])),
           );
+        }
         $permissions['view any ' . $entity_type . ' entity'] = array(
           'title' => t('View any @entity_type of any type', array('@entity_type' => $labels['singular'])),
           'restrict access' => TRUE,
         );
         // Per-bundle create and edit permissions.
         if (!empty($entity_info['entity keys']['bundle'])) {
           foreach ($entity_info['bundles'] as $bundle_name => $bundle_info) {
             $permissions['create ' . $entity_type . ' entities of bundle ' . $bundle_name] = array(
               'title' => t('Create %bundle @entity_type', array('@entity_type' => $labels['plural'], '%bundle' => $bundle_info['label'])),
             );
             if (!empty($entity_info['access arguments']['user key'])) {
               $permissions['edit own ' . $entity_type . ' entities of bundle ' . $bundle_name] = array(
                 'title' => t('Edit own %bundle @entity_type', array('@entity_type' => $labels['plural'], '%bundle' => $bundle_info['label'])),
               );
+            }
             $permissions['edit any ' . $entity_type . ' entity of bundle ' . $bundle_name] = array(
               'title' => t('Edit any %bundle @entity_type', array('@entity_type' => $labels['singular'], '%bundle' => $bundle_info['label'])),
               'restrict access' => TRUE,
             );
             if (!empty($entity_info['access arguments']['user key'])) {
               $permissions['view own ' . $entity_type . ' entities of bundle ' . $bundle_name] = array(
                 'title' => t('View own %bundle @entity_type', array('@entity_type' => $labels['plural'], '%bundle' => $bundle_info['label'])),
               );
+            }
             $permissions['view any ' . $entity_type . ' entity of bundle ' . $bundle_name] = array(
               'title' => t('View any %bundle @entity_type', array('@entity_type' => $labels['singular'], '%bundle' => $bundle_info['label'])),
               'restrict access' => TRUE,
             );
+          }
+        }
         return $permissions;
+      }
       /**
        * Generic implementation of hook_query_alter() for Drupal Commerce entities.
        */
       function commerce_entity_access_query_alter($query, $entity_type, $base_table = NULL, $account = NULL) {
         global $user;
         // Read the account from the query if available or default to the current user.
         if (!isset($account) && !$account = $query->getMetaData('account')) {
           $account = $user;
+        }
         // Read the base table from the query if available or default to the first
         // table in the query's tables array.
         if (!isset($base_table) && !$base_table = $query->getMetaData('base_table')) {
           // Assume that the base table is the first table if not set. It will result
           // in an invalid query if the first table is not the table we expect,
           // forcing the caller to actually properly pass a base table in that case.
           $tables = &$query->getTables();
           reset($tables);
           $base_table = key($tables);
+        }
         // Do not apply any conditions for users with administrative view permissions.
         if (user_access('administer ' . $entity_type . ' entities', $account)
           || user_access('view any ' . $entity_type . ' entity', $account)) {
           return;
+        }
         // Get the entity type info array for the current access check and prepare a
         // conditions object.
         $entity_info = entity_get_info($entity_type);
         $conditions = db_or();
         // Perform bundle specific permission checks for the specified entity type.
         $really_restricted = FALSE;
         // Loop over every possible bundle for the given entity type.
         foreach ($entity_info['bundles'] as $bundle_name => $bundle_info) {
           // If the user has access to view entities of the current bundle...
           if (user_access('view any ' . $entity_type . ' entity of bundle ' . $bundle_name, $account)) {
             // Add a condition granting access if the entity specified by the view
             // query is of the same bundle.
             $conditions->condition($base_table . '.' . $entity_info['entity keys']['bundle'], $bundle_name);
+          }
           elseif ($account->uid && !empty($entity_info['access arguments']['user key']) && user_access('view own ' . $entity_type . ' entities of bundle ' . $bundle_name, $account)) {
             // Otherwise if an authenticated user has access to view his own entities
             // of the current bundle and the given entity type has a user ownership key...
             $really_restricted = TRUE;
             // Add an AND condition group that grants access if the entity specified
             // by the view query matches the same bundle and belongs to the user.
             $conditions->condition(db_and()
               ->condition($base_table . '.' . $entity_info['entity keys']['bundle'], $bundle_name)
               ->condition($base_table . '.' . $entity_info['access arguments']['user key'], $account->uid)
             );
+          }
           else {
             $really_restricted = TRUE;
+          }
+        }
         // No further conditions need to be added to the query if we determined above
         // that the user has an administrative view permission for any entity of the
         // type and bundles represented by the query.
         if (!$really_restricted) {
           return;
+        }
         // If the given entity type has a user ownership key...
         if (!empty($entity_info['access arguments']['user key'])) {
           // Perform 'view own' access control for the entity in the query if the user
           // is authenticated.
           if ($account->uid && user_access('view own ' . $entity_type . ' entities', $account)) {
             $conditions->condition($base_table . '.' . $entity_info['access arguments']['user key'], $account->uid);
+          }
+        }
         // Prepare an array of condition alter hooks to invoke and an array of context
         // data for the current query.
         $hooks = array(
           'commerce_entity_access_condition_' . $entity_type,
           'commerce_entity_access_condition'
         );
         $context = array(
           'account' => $account,
           'entity_type' => $entity_type,
           'base_table' => $base_table
         );
         // Allow other modules to add conditions to the array as necessary.
         drupal_alter($hooks, $conditions, $context);
         // If we have more than one condition based on the entity access permissions
         // and any hook implementations...
         if (count($conditions)) {
           // Add the conditions to the query.
           $query->condition($conditions);
+        }
         else {
           // Otherwise, since we don't have any possible conditions to match against,
           // we falsify this query. View checks are access grants, not access denials.
           $query->where('1 = 0');
+        }
+      }
       /**
        * Ensures an options list limit value is either empty or a positive integer.
        */
       function commerce_options_list_limit_validate($element, &$form_state, $form) {
         if (!empty($element['#value']) && (!is_numeric($element['#value']) || $element['#value'] < 1)) {
           form_error($element, t('Use a positive number for the options list limit or else leave it blank for no limit.'));
+        }
+      }

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