drupal/core/modules/language/language.install

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<?php
/**
* @file
* Install, update and uninstall functions for the language module.
*/
/**
* Implements hook_install().
*
* Enable URL language negotiation by default in order to have a basic working
* system on multilingual sites without needing any preliminary configuration.
*/
function language_install() {
// Add the default language at first so that language_list() returns this in
// language_special_languages().
$default_language = language_save(language_default());
$languages = language_default_locked_languages($default_language->weight);
foreach ($languages as $language) {
language_save($language);
}
// Enable URL language detection for each configurable language type.
require_once DRUPAL_ROOT . '/core/includes/language.inc';
foreach (language_types_get_configurable(FALSE) as $type) {
language_negotiation_set($type, array(LANGUAGE_NEGOTIATION_URL => 0));
}
}
/**
* Implements hook_uninstall().
*/
function language_uninstall() {
// Clear variables.
variable_del('language_default');
variable_del('language_count');
// Clear variables.
variable_del('language_types');
variable_del('language_negotiation_url_part');
variable_del('language_negotiation_url_prefixes');
variable_del('language_negotiation_url_domains');
variable_del('language_negotiation_session_param');
variable_del('language_content_type_default');
variable_del('language_content_type_negotiation');
foreach (language_types_get_all() as $type) {
variable_del("language_negotiation_$type");
variable_del("language_negotiation_methods_weight_$type");
}
// Re-initialize the language system so successive calls to t() and other
// functions will not expect languages to be present.
drupal_language_initialize();
}
/**
* Implements hook_schema().
*/
function language_schema() {
$schema['language'] = array(
'description' => 'List of all available languages in the system.',
'fields' => array(
'langcode' => array(
'type' => 'varchar',
'length' => 12,
'not null' => TRUE,
'default' => '',
'description' => "Language code, e.g. 'de' or 'en-US'.",
),
'name' => array(
'type' => 'varchar',
'length' => 64,
'not null' => TRUE,
'default' => '',
'description' => 'Language name.',
),
'direction' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'Direction of language (Left-to-Right = 0, Right-to-Left = 1).',
),
'weight' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'Weight, used in lists of languages.',
),
'locked' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
'description' => 'A boolean indicating whether the administrator can edit or delete the language.',
),
),
'primary key' => array('langcode'),
'indexes' => array(
'list' => array('weight', 'name'),
),
);
return $schema;
}