/**
* The user has the ability to define more than one database in wtConfig.php.
* Some modules may want to use their own databases instead of share it with the core.
* In that case, the module will call wtDBGetConnection with the unique identifier
* of the database. Now, if this database is defined in wtConfig.php, the function
* will return it, otherwise the default database will be used.
*
* @param $id
* the identifier of the desired database.
* @param $fallback_id
* Optional. A fallback connection id which will be used if the first database is not
* defined.
* @return
* the appropriate database connection, if exists, or the base/fallback connection used
* by the core.
*/
function wtDBGetConnection($id, $fallback_id = NULL)
{
global $WT;
if (isset($WT->DBConnections[$id])) {
return $WT->DBConnections[$id];
} else {
if (!$fallback_id) {
return $WT->DB;
} else {
return wtDBGetConnection($fallback_id);
}
}
}
unset($first);
} else {
$WT->DB->connect($WT->DBUrl);
}
if (!$WT->DB->connected()) {
// TODO: Display database connection error message.
}
$WT->ModuleManager = new wtModuleManager();
// Is the core already installed?
$ok = wtRegGetKey("Core/Installed");
if (!$ok || $WT->DevMode) {
if (wtDBInstall($WT->CoreDir . "include/wtCoreDB.php")) {
wtUserGroupCreate("administrators");
wtUserCreate("admin", "admin", "administrators");
wtRegSetKey("Core/Installed", true);
if (wtDBInstall($WT->CoreDir . "include/wtCoreModuleDB.php", wtDBGetConnection("Core"))) {
include $WT->CoreDir . "include/wtModInstall.php";
wtInstallModulesInDirectory($WT->CoreDir . "modules");
// Finally, install the core modules.
wtBuildModuleWeights();
}
}
}
unset($ok);
$WT->Theme = wtLoadTheme(NULL);
$WT->ModuleManager->read();
$WT->ModuleManager->preInit();
$WT->ModuleManager->postInit();
if (wtCallHook("Theme/OnCall", NULL) !== FALSE) {
$WT->Theme->call();
}
function wtModuleManager()
{
$this->mDB =& wtDBGetConnection("Core");
}
/**
* Checks wheter a requirement is available or not. Requirements are used for module dependencies, for example.
* A typical requirement string should look like this:
*
* Module:SomeModule>=0.1
*
* This would check if a module named SomeModule is installed in version 0.1 or later.
*
*
* @param $str
* The requirement string.
* @return
* True if the requirement has been met or false if not.
*/
function wtCheckRequirement($reqStr)
{
$req = wtParseRequirement($reqStr);
if (!$req) {
return false;
}
global $WT;
switch ($req['type']) {
case "Module":
$db = wtDBGetConnection("Core");
$r = $WT->ModuleManager->checkModule($req['first'], $req['second']);
if ($req['type'] == "==" || $req['type'] == "<=" || $req['type'] == ">=" && $r !== TRUE) {
return false;
}
if ($req['type'] == "!=" && $r === TRUE) {
return false;
}
if ($req['type'] == ">" && ($r === TRUE || $r <= 0)) {
return false;
}
if ($req['type'] == "<" && ($r === TRUE || $r >= 0)) {
return false;
}
return true;
break;
case "":
if ($req['first'] == "WTCore") {
return @eval("return \$WT->Version" . $req['comparison'] . "\$req['second'];");
}
break;
}
return false;
}
