from sys import argv

def convert_bytes_to_rgb(hexword):
	"""
	:param hexword: dw written as big endian
	
	:output: tuple of RGB values between 0 and 31
	"""
	if 0x8000 & hexword:
		raise ValueError("This is not an RGB value")
	red = (0x7c00 & hexword) >> 10
	green = (0x03e0 & hexword) >> 5
	blue = 0x001f & hexword
	return red, green, blue

def rgb_scan(file):
	readLines = open(file).readlines()
	for i, line in enumerate(readLines):
		if line[0] == '\t' and "$" in line:
			lineSplit = line.split("$")
			R, G, B = convert_bytes_to_rgb(int(lineSplit[1][:4], 16))
			readLines[i] = lineSplit[0] + "{}, {}, {}\n".format(R, G, B)
	open(file, 'w+').write("".join(readLines))

if __name__ == '__main__':
	rgb_scan(argv[1])