function getRealpath($_path)
{
/*
* This is the starting point of the system root.
* Left empty for UNIX based and Mac.
* For Windows this is drive letter and semicolon.
*/
$__path = $_path;
if (isRelative($_path)) {
$__curdir = unifyPath(realpath(".") . _PL_OS_SEP);
$__path = $__curdir . $__path;
}
$__startPoint = "";
if (checkCurrentOS("Win")) {
list($__startPoint, $__path) = explode(":", $__path, 2);
$__startPoint .= ":";
}
# From now processing is the same for WIndows and Unix, and hopefully for others.
$__realparts = array();
$__parts = explode(_PL_OS_SEP, $__path);
for ($i = 0; $i < count($__parts); $i++) {
if (strlen($__parts[$i]) == 0 || $__parts[$i] == ".") {
continue;
}
if ($__parts[$i] == "..") {
if (count($__realparts) > 0) {
array_pop($__realparts);
}
} else {
array_push($__realparts, $__parts[$i]);
}
}
return $__startPoint . _PL_OS_SEP . implode(_PL_OS_SEP, $__realparts);
}
function resolve_path($base, $path)
{
$base = str_replace('\\', '/', $base);
$path = str_replace('\\', '/', $path);
if (substr($base, -1) == '/') {
$base = substr($base, 0, -1);
}
$base = explode('/', $base);
$path = explode('/', $path);
// del unnecessary elements
$path = array_diff($path, array('', '.'));
while ($dir = array_shift($path)) {
if ($dir == '..') {
array_pop($base);
continue;
}
$base[] = $dir;
}
if (checkCurrentOS("Win")) {
array_shift($base);
return implode('/', $base) . '/';
} else {
return implode('/', $base) . '/';
}
}
