/**
* Compiles current configuration from different sources selected by
* current context and overloading/extending each other.
*
*/
protected function import()
{
/*
* prepare coordinates for collecting all interesting sources/files
*/
// may have separate sources in TXF and application context
$patterns = array(TXF_FRAMEWORK_PATH . '/config/%A/%H.xml', TXF_APPLICATION_PATH . '/config/%H.xml');
// may have sources depending on application's name
$applications = array('default', TXF_APPLICATION);
// may have sources depending on used hostname
$hosts = array();
$temp = explode('.', $_SERVER['HTTP_HOST']);
while (count($temp)) {
$hosts[] = implode('.', $temp);
array_shift($temp);
}
$hosts[] = 'default';
$hosts = array_reverse($hosts);
/*
* select all files to read configuration from with latter overlaying former
*/
$files = array();
foreach ($patterns as $pattern) {
foreach ($applications as $application) {
foreach ($hosts as $host) {
$filename = strtr($pattern, array('%A' => $application, '%H' => $host));
if ($files[$filename]) {
// always include repeating file in its highest priority
unset($files[$filename]);
} else {
// haven't tested before whether file exists or not
// --> check now
if (!file_exists($filename)) {
continue;
}
}
$files[$filename] = $filename;
}
}
}
/*
* read selected files each extending/overlaying its predecessors' setup
*/
$setup = new set();
foreach ($files as $file) {
$xml = simplexml_load_file($file);
$setup->extendFromXml($xml);
}
// save read configuration in runtime
$this->cached = $setup;
}
