ddnet/scripts/cmd5.py

import hashlib, sys, re

alphanum = "0123456789abcdefghijklmnopqrstuvwzyxABCDEFGHIJKLMNOPQRSTUVWXYZ_"

def cstrip(lines):
	d = ""	
	for l in lines:
		l = re.sub("#.*", "", l)
		l = re.sub("//.*", "", l)
		d += l + " "
	d = re.sub("\/\*.*?\*/", "", d) # remove /* */ comments
	d = d.replace("\t", " ") # tab to space
	d = re.sub("  *", " ", d) # remove double spaces
	d = re.sub("", "", d) # remove /* */ comments
	
	d = d.strip()
	
	# this eats up cases like 'n {'
	i = 1
	while i < len(d)-2:
		if d[i] == ' ':
			if not (d[i-1] in alphanum and d[i+1] in alphanum):
				d = d[:i] + d[i+1:]
		i += 1
	return d

f = ""
for filename in sys.argv[1:]:
	f += cstrip([l.decode("iso8859-1").strip() for l in open(filename, "rb")])

hash = hashlib.md5(f.encode()).hexdigest().lower()[16:]
# TODO: refactor hash that is equal to the 0.5 hash, remove when we 
# TODO: remove when we don't need it any more
if hash == "026b8eceb4cdd369":
	hash = "b67d1f1a1eea234e"
print('#define GAME_NETVERSION_HASH "%s"' % hash)