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import sys, struct, re
f = open(sys.argv[1], 'rb')
rlyt = f.read()
f.close()
from ethyl import formats
for (name, definition) in formats.items():
definition = re.sub(re.compile('//.*$', re.M), '', definition)
definition = definition.strip()
definition = re.sub('\n[\n ]+', '\n', definition)
df = [[j.strip() for j in i.strip().split()] for i in definition.split('\n')]
formats[name] = df
def pr_dict(data, start=''):
for a in sorted(data.keys()):
b = data[a]
print '%s%s: %s' % (start, str(a), hex(b) if type(b) in (int, long) else repr(b))
types = {
'u8': 'B',
'u16': 'H',
'u32': 'I',
'u64': 'Q',
's8': 'b',
's16': 'h',
's32': 'i',
's64': 'q',
'float': 'f',
'f32': 'f',
'double': 'd',
'f64': 'd',
'bool': 'c',
'char': 'c',
}
def parse_var(pos, typ, chunk):
if not types.has_key(typ):
raise Exception('What\'s a %s?' % typ)
fmt = '>' + types[typ]
size = struct.calcsize(fmt)
return (pos + size), struct.unpack(fmt, chunk[pos:pos + size])[0]
def nullterm(str_plus):
z = str_plus.find('\0')
if z != -1:
return str_plus[:z]
else:
return str_plus
def parse_data(chunk, definition, prefix=None, start=0):
df = formats[definition][:]
#print df, repr(definition)
print df
etc = df[-1][0][:3] == 'etc'
etcn = etc and df.pop() == ['etc!']
pos = start
ret = {}
for typ, name in df:
m = re.match('^([^\[]+)\[([a-zA-Z0-9]+)\]$', name)
if m:
name = m.group(1)
size = eval(m.group(2))
if typ == 'char':
var = chunk[pos:pos+size].rstrip(chr(0))
pos += size
else:
var = []
for n in xrange(size):
pos, varn = parse_var(pos, typ, chunk)
var.append(varn)
else:
pos, var = parse_var(pos, typ, chunk)
if ret.has_key(name):
try:
ret[name].append(var)
except AttributeError:
ret[name] = [ret[name], var]
else:
ret[name] = var
#print hex(pos)
if pos > len(chunk):
raise Exception('too much!')
if pos < len(chunk):
if etc and not etcn:
ret['etc'] = repr(chunk[pos:])
elif not etc:
raise Exception('Incomplete handling...')
if prefix is not None:
ret2 = {}
for (k, v) in ret.items():
ret2[prefix + '.' + k] = v
ret = ret2
return (ret, pos) if etcn else ret
def iff_to_chunks(z):
pos = 0
chunks = []
while pos < len(z):
cc = z[pos:pos+4]
length, = struct.unpack('>I', z[pos+4:pos+8])
#print cc
#print hex(length)
data = z[pos+8:pos+length]
pos += length
chunks.append((cc, data))
return chunks
assert rlyt[0:8] == 'RLYT\xfe\xff\x00\x08'
offs, = struct.unpack('>h', rlyt[0xc:0xe])
ch = iff_to_chunks(rlyt[offs:])
indent = 0
for typ, chunk in ch:
print ' ' * indent + typ + ' ' + hex(len(chunk))
vars = None
if typ in ('pic1', 'pan1', 'bnd1', 'wnd1', 'txt1'):
vars, pos = parse_data(chunk, 'pane')
if typ == 'txt1':
vars2, pos = parse_data(chunk[pos:], 'text', '~text')
txt = chunk[vars2['~text.name_offs'] - 8:]
vars2['~text.text'] = unicode(txt, 'utf_16_be').rstrip('\x00')
vars.update(vars2)
elif typ == 'pic1':
vars2, pos = parse_data(chunk, 'pic', prefix='~pic', start=pos)
vars2['~pic.texcoords'] = []
for n in xrange(vars2['~pic.num_texcoords']):
vars2['~pic.texcoords'].append(struct.unpack('>ffffffff', chunk[pos:pos+0x20]))
pos += 0x20
assert pos == len(chunk)
vars.update(vars2)
elif typ == 'lyt1':
vars = parse_data(chunk, 'lytheader')
elif typ == 'grp1':
vars, pos = parse_data(chunk, 'group')
vars['subs'] = []
for n in xrange(vars['numsubs']):
vars['subs'].append(nullterm(chunk[pos:pos+16]))
pos += 16
elif typ in ('txl1', 'fnl1', 'mat1'):
things = {'txl1': 'textures', 'fnl1': 'files', 'mat1': 'materials'}[typ]
vars, pos = parse_data(chunk, 'numoffs')
vars[things] = []
pos += vars['offs']
del vars['offs'] # unneeded
for n in xrange(vars['num']):
if typ == 'mat1':
offset, = struct.unpack('>I', chunk[pos:pos+4])
pos += 4
else:
offset, unk = struct.unpack('>II', chunk[pos:pos+8])
pos += 8
name = nullterm(chunk[offset - 8:])
vars[things].append(name if typ == 'mat1' else {'name': name, 'unk': unk})
if typ == 'mat1':
materials = vars['materials']
elif typ in ('grs1', 'pas1'):
indent += 1
elif typ in ('gre1', 'pae1'):
indent -= 1
else:
print repr(chunk)
if vars: pr_dict(vars, ' ' * indent + ' ')
#print hex(len(ch))
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