private function truepath($path)
{
// whether $path is unix or not
$unipath = strlen($path) == 0 || $path[0] != '/';
// attempts to detect if path is relative in which case, add cwd
if (strpos($path, ':') === false && $unipath) {
$path = $this->_currentDir . DIRECTORY_SEPARATOR . $path;
}
// resolve path parts (single dot, double dot and double delimiters)
$path = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $path);
$parts = array_filter(explode(DIRECTORY_SEPARATOR, $path), 'strlen');
$absolutes = array();
foreach ($parts as $part) {
if ('.' == $part) {
continue;
}
if ('..' == $part) {
array_pop($absolutes);
} else {
$absolutes[] = $part;
}
}
$path = implode(DIRECTORY_SEPARATOR, $absolutes);
// resolve any symlinks
if (file_exists($path) && linkinfo($path) > 0) {
$path = readlink($path);
}
// put initial separator that could have been lost
$path = !$unipath ? '/' . $path : $path;
return $path;
}
