Extract sample

using Archive;

public static void main (string[] args) {
    var read = new Read();
    read.support_filter_all();
    read.support_format_all();
    var file = FileStream.open ("/path/to/archive.xz", "r");
    var res = read.open_FILE (file);
    if (res == Result.OK) {
        unowned Entry entry;
        while (read.next_header (out entry) == Result.OK)
            read.extract (entry);
    } else print ("error\n");
}