Reads all bytes from an InputStream (Vala)

read_all_bytes_from_stream.vala

public uint8[] read_all_bytes_from_stream (InputStream stream, ulong buf_size) throws Error {
	uint8[] data = {};
	uint8[] buf = new uint8[buf_size];
	ssize_t bytes;
	ulong total = 0;
	while (true) {
		bytes = stream.read(buf);
		if (bytes <= 0) break;
		
		ulong size = (ulong) (total + bytes);
		if (size > data.length) {
			ulong new_len = MathUtils.next_pot(size);
			uint8[] prev = data;
			data = new uint8[new_len];
			Memory.copy(&data[0], &prev[0], total);
			prev = null;
		}
		Memory.copy(&data[0] + total, &buf[0], bytes);
		total += (ulong) bytes;
	}
	return data[0:total];
}