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<?php
// $Id$
define('SCHEMA_UNINSTALLED', -1);
define('SCHEMA_INSTALLED', 0);
// The system module (Drupal core) is currently a special case
include_once './database/updates.inc';
// Include install files for each module
foreach (module_list() as $module) {
$install_file = './'. drupal_get_path('module', $module) .'/'. $module .'.install';
if (is_file($install_file)) {
include_once $install_file;
}
}
/**
* Returns an array of availiable schema versions for a module.
*
* @param $module
* A module name.
* @return
* If the module has updates, an array of available updates. Otherwise,
* FALSE.
*/
function drupal_get_schema_versions($module) {
$functions = get_defined_functions();
foreach ($functions['user'] as $function) {
if (strpos($function, $module .'_update_') === 0) {
$version = substr($function, strlen($module .'_update_'));
if (is_numeric($version)) {
$updates[] = $version;
}
}
}
if (count($updates) == 0) {
return FALSE;
}
return $updates;
}
/**
* Returns the currently installed schema version for a module.
*
* @param $module
* A module name.
* @return
* The currently installed schema version.
*/
function drupal_get_installed_schema_version($module, $reset = FALSE) {
static $versions;
if ($reset) {
unset($versions);
}
if (!$versions) {
$versions = array();
$result = db_query("SELECT name, schema_version FROM {system} WHERE type = 'module'");
while ($row = db_fetch_object($result)) {
$versions[$row->name] = $row->schema_version;
}
}
return $versions[$module];
}
/**
* Update the installed version information for a module.
*
* @param $module
* A module name.
* @param $version
* The new schema version.
*/
function drupal_set_installed_schema_version($module, $version) {
db_query("UPDATE {system} SET schema_version = %d WHERE name = '%s'", $version, $module);
}
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