'''
2021-06-04
I was trying to crack and unpack CIV IV Save Game Files:
    I got nowhere

# # #

Created on Feb 27, 2018
@author: Brett Paufler
Copyright Brett Paufler

save games use zlib
and zlib files start with '789c'
    other sources say '0100789c'
                         0x789c
This does a little, but not much

Moving on to different aspects

'''
import zlib
import gzip
import pickle

game_path = '.\\input\\mid_game.CivBeyondSwordSave'
text_raw = open(game_path, 'rb').read()
#print text_raw

text_hex = ''.join([str(hex(ord(c))[2:].zfill(2)) for c in text_raw])
#print text_hex[:20]
save_name = '.\\output\\hex_text_full.txt'
with open(save_name, 'w') as f:
    f.write(text_hex)
    
i = text_hex.find('789c')
#i = text_hex
save_name = '.\\output\\hex_text_compressed.txt'
with open(save_name, 'w') as f:
    f.write(text_hex[i:])

#-5676 is first hit
for n in range(-1, -10000, -100):
    try:
        text = zlib.decompressobj().decompress(text_raw[i/2:n])
        print n
        #print text
        save_name = '.\\output\\hex_text_uncompressed_%d.txt' % n
        with open(save_name, 'w') as f:
            f.write(text)
        break
    except:
        pass

print i
print len(text_raw)
print len(text_hex)
#print len(text_compressed)

#print type(text_hex)
#text_hex = text_hex.replace('0x', '')
#print text_hex


#zips = ('\n').join(text_raw.split('\n')[4:])
#print zips
#print text_raw
#print zlib.decompress(zips)
#hex_game = [hex(ord(c)) for c in text_raw]
#print hex_game
#print gzip.open(game_path).read()

#game = pickle.loads(text_raw)
#pickle.lo