/**
* Register a global variable called __fu_$var & also $var if requested.
*
* We use this so that we have vars we can rely upon (__fu_*) and optionally short
* versions that the coder can use.
*
* Variables that have already been declared cannot be overwritten.
*
* @param string name of variable
* @param mixed value of variable
* @param bool if true will also set a global variable by the same name
* @return mixed value of variable
*/
function &set($k, $v, $reg_global = false)
{
$var_name = "__fu_{$k}";
$GLOBALS[$var_name] =& $v;
if ($reg_global) {
$GLOBALS[$k] =& $GLOBALS[$var_name];
}
return Fu_Reg::get($k);
}
/**
* Singleton should be used to save memory.
* It keeps 1 global object that is used by BS for each type of DB object
*
* @param Fu_DB_Base based object
* @return Fu_DB_Association object instance
*/
public function singleton($class)
{
$instance = Fu_Reg::get("association_{$class}");
if (is_null($instance)) {
$instance = Fu_Reg::set("association_{$class}", new Fu_DB_Association($dbo));
} else {
// as we are restoring this object from the global register, we freeze it
$instance->frozen = true;
}
return $instance;
}
public function debug($s = null, $p = array())
{
if (!(isset($this) && get_class($this) == __CLASS__)) {
$instance = Fu_Reg::get("fu_db_debug");
return $instance->debug($s, $p);
}
if ($this->debug) {
if ($s) {
$this->info[] = array('sql' => $s, 'params' => $p);
} else {
return $this->info;
}
}
}
function __construct($options)
{
$this->options = $options;
$this->data_dir = ROOT . '/data';
$this->page = $_GET['p'] ? $_GET['p'] : 'index.html';
$this->page_filepath = $this->data_dir . '/' . $this->page;
$this->page_exists = file_exists($this->page_filepath);
$this->git = new Git($this->data_dir, $options['git_bin']);
$this->dsn = 'sqlite:' . $this->data_dir . '/.sqlite.db';
$this->_check_installation();
$dbh = Fu_Reg::get('dbh');
if (!$dbh) {
Fu_Reg::set('dbh', new PDO($this->dsn));
}
}
/**
* Will return the text of the first flash message that matches the given type.
*
* E.g. Fu_Feedback::get_flash('warning')
*
* @param string type
* @return string text
*/
function get_flash($type = 'message')
{
if (!(isset($this) && get_class($this) == __CLASS__)) {
$instance = Fu_Reg::get("fu_feedback");
return $instance->get_flash($type);
}
foreach ((array) $this->flashes as $flash) {
if ($flash['type'] == $type) {
return $flash['text'];
}
}
return '';
}
public static function rollback()
{
$depth = (int) Fu_Reg::get('Fu_DB_Transaction_Depth');
Fu_Reg::set('Fu_DB_Transaction_Depth', $depth - 1);
if ($depth > 1) {
return;
} else {
// at the root transaction
$dbh = Fu_Reg::get('dbh');
$dbh->rollback();
}
}