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Code Issues Releases Wiki Activity

NEVER AGAIN.

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This commit is contained in:
Connor Olding 2015-03-08 09:52:19 -07:00
parent 89ead305aa
commit cae40acc0f
4 changed files with 220 additions and 191 deletions
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4
.gitattributes vendored Normal file
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@ -0,0 +1,4 @@
*.lua text eol=lf
*.py text eol=lf
*.pyx text eol=lf
*.pyxbld text eol=lf

55
heuristics.py
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@ -1,20 +1,39 @@
def try_scene(f):
def try_makerom(f):
f.seek(0)
while True:
command = f.read(8)
if len(command) == 0:
if f.read(12) == b'\x80\x37\x12\x40\x00\x00\x00\x0f\x80\x00\x04\x00':
return True
return False
def try_dmadata(f):
f.seek(0)
if f.read(20) == b"\x00\x00\x00\x00\x00\x00\x10\x60\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x60":
return True
return False
def try_actor(f):
if True:
# this is dumb.
# actors are just object files really,
# so anything we can detect with would just detect code
# or inconsistent data.
# maybe there's some common-looking function between them.
return False
f.seek(-4*4, 2)
end = f.tell()
for i in range(end, end - 0x200, -4):
if i <= 0:
return False
if command[2:4] != b'\x00\x00':
f.seek(i)
#row = f.read(0x10)
row = f.read(0xC)
if len(row) == 0:
return False
if command[0] > 0x1e:
return False
if command[4] != 0x02 and command[4] != 0x00:
if command[0] not in (0x05, 0x10, 0x11, 0x12):
return False
if command == b'\x14\x00\x00\x00\x00\x00\x00\x00':
#if row == b'\x82\x00\x00\x10\x82\x00\x00\x14\x82\x00\x00\x18\x82\x00\x00\x1c':
# return True
if row == b'\x82\x00\x00\x10\x82\x00\x00\x14\x82\x00\x00\x18':
return True
def try_room(f):
def try_scene_or_room(f, bank=2):
# note: doesn't detect syotes_room_0 because it's missing a header
f.seek(0)
while True:
@ -25,16 +44,22 @@ def try_room(f):
return False
if command[0] > 0x1e:
return False
if command[4] != 0x03 and command[4] != 0x00:
if command[4] != bank and command[4] != 0x00:
if command[0] not in (0x05, 0x10, 0x11, 0x12):
return False
if command == b'\x14\x00\x00\x00\x00\x00\x00\x00':
return True
def detect_format(f, fn=None):
if try_scene(f):
if try_makerom(f):
return None
if try_dmadata(f):
return None
if try_actor(f):
return 'actor'
if try_scene_or_room(f, 2):
return 'scene'
if try_room(f):
if try_scene_or_room(f, 3):
return 'room'
return None