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binhex.pyo
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Python Compiled Bytecode
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2005-10-18
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554 lines
# Source Generated with Decompyle++
# File: in.pyo (Python 2.4)
'''Macintosh binhex compression/decompression.
easy interface:
binhex(inputfilename, outputfilename)
hexbin(inputfilename, outputfilename)
'''
import sys
import os
import struct
import binascii
__all__ = [
'binhex',
'hexbin',
'Error']
class Error(Exception):
pass
(_DID_HEADER, _DID_DATA, _DID_RSRC) = range(3)
REASONABLY_LARGE = 32768
LINELEN = 64
RUNCHAR = chr(144)
if os.name == 'mac':
import macfs
import MacOS
try:
openrf = MacOS.openrf
except AttributeError:
openrf = open
def FInfo():
return macfs.FInfo()
def getfileinfo(name):
finfo = macfs.FSSpec(name).GetFInfo()
(dir, file) = os.path.split(name)
fp = open(name, 'rb')
fp.seek(0, 2)
dlen = fp.tell()
fp = openrf(name, '*rb')
fp.seek(0, 2)
rlen = fp.tell()
return (file, finfo, dlen, rlen)
def openrsrc(name, *mode):
if not mode:
mode = '*rb'
else:
mode = '*' + mode[0]
return openrf(name, mode)
else:
class FInfo:
def __init__(self):
self.Type = '????'
self.Creator = '????'
self.Flags = 0
def getfileinfo(name):
finfo = FInfo()
fp = open(name)
data = open(name).read(256)
for c in data:
if not c.isspace():
if c < ' ' or ord(c) > 127:
break
continue
else:
finfo.Type = 'TEXT'
fp.seek(0, 2)
dsize = fp.tell()
fp.close()
(dir, file) = os.path.split(name)
file = file.replace(':', '-', 1)
return (file, finfo, dsize, 0)
class openrsrc:
def __init__(self, *args):
pass
def read(self, *args):
return ''
def write(self, *args):
pass
def close(self):
pass
class _Hqxcoderengine:
'''Write data to the coder in 3-byte chunks'''
def __init__(self, ofp):
self.ofp = ofp
self.data = ''
self.hqxdata = ''
self.linelen = LINELEN - 1
def write(self, data):
self.data = self.data + data
datalen = len(self.data)
todo = (datalen // 3) * 3
data = self.data[:todo]
self.data = self.data[todo:]
if not data:
return None
self.hqxdata = self.hqxdata + binascii.b2a_hqx(data)
self._flush(0)
def _flush(self, force):
first = 0
while first <= len(self.hqxdata) - self.linelen:
last = first + self.linelen
self.ofp.write(self.hqxdata[first:last] + '\n')
self.linelen = LINELEN
first = last
self.hqxdata = self.hqxdata[first:]
if force:
self.ofp.write(self.hqxdata + ':\n')
def close(self):
if self.data:
self.hqxdata = self.hqxdata + binascii.b2a_hqx(self.data)
self._flush(1)
self.ofp.close()
del self.ofp
class _Rlecoderengine:
'''Write data to the RLE-coder in suitably large chunks'''
def __init__(self, ofp):
self.ofp = ofp
self.data = ''
def write(self, data):
self.data = self.data + data
if len(self.data) < REASONABLY_LARGE:
return None
rledata = binascii.rlecode_hqx(self.data)
self.ofp.write(rledata)
self.data = ''
def close(self):
if self.data:
rledata = binascii.rlecode_hqx(self.data)
self.ofp.write(rledata)
self.ofp.close()
del self.ofp
class BinHex:
def __init__(self, .2, ofp):
(name, finfo, dlen, rlen) = .2
if type(ofp) == type(''):
ofname = ofp
ofp = open(ofname, 'w')
if os.name == 'mac':
fss = macfs.FSSpec(ofname)
fss.SetCreatorType('BnHq', 'TEXT')
ofp.write('(This file must be converted with BinHex 4.0)\n\n:')
hqxer = _Hqxcoderengine(ofp)
self.ofp = _Rlecoderengine(hqxer)
self.crc = 0
if finfo is None:
finfo = FInfo()
self.dlen = dlen
self.rlen = rlen
self._writeinfo(name, finfo)
self.state = _DID_HEADER
def _writeinfo(self, name, finfo):
nl = len(name)
if nl > 63:
raise Error, 'Filename too long'
d = chr(nl) + name + '\x00'
d2 = finfo.Type + finfo.Creator
d3 = struct.pack('>h', finfo.Flags)
d4 = struct.pack('>ii', self.dlen, self.rlen)
info = d + d2 + d3 + d4
self._write(info)
self._writecrc()
def _write(self, data):
self.crc = binascii.crc_hqx(data, self.crc)
self.ofp.write(data)
def _writecrc(self):
self.ofp.write(struct.pack('>h', self.crc))
self.crc = 0
def write(self, data):
if self.state != _DID_HEADER:
raise Error, 'Writing data at the wrong time'
self.dlen = self.dlen - len(data)
self._write(data)
def close_data(self):
if self.dlen != 0:
raise Error, 'Incorrect data size, diff=%r' % (self.rlen,)
self._writecrc()
self.state = _DID_DATA
def write_rsrc(self, data):
if self.state < _DID_DATA:
self.close_data()
if self.state != _DID_DATA:
raise Error, 'Writing resource data at the wrong time'
self.rlen = self.rlen - len(data)
self._write(data)
def close(self):
if self.state < _DID_DATA:
self.close_data()
if self.state != _DID_DATA:
raise Error, 'Close at the wrong time'
if self.rlen != 0:
raise Error, 'Incorrect resource-datasize, diff=%r' % (self.rlen,)
self._writecrc()
self.ofp.close()
self.state = None
del self.ofp
def binhex(inp, out):
'''(infilename, outfilename) - Create binhex-encoded copy of a file'''
finfo = getfileinfo(inp)
ofp = BinHex(finfo, out)
ifp = open(inp, 'rb')
while None:
d = ifp.read(128000)
if not d:
break
ofp.close_data()
ifp.close()
ifp = openrsrc(inp, 'rb')
while None:
d = ifp.read(128000)
if not d:
break
ofp.close()
ifp.close()
class _Hqxdecoderengine:
'''Read data via the decoder in 4-byte chunks'''
def __init__(self, ifp):
self.ifp = ifp
self.eof = 0
def read(self, totalwtd):
'''Read at least wtd bytes (or until EOF)'''
decdata = ''
wtd = totalwtd
while wtd > 0:
if self.eof:
return decdata
wtd = ((wtd + 2) // 3) * 4
data = self.ifp.read(wtd)
while None:
try:
(decdatacur, self.eof) = binascii.a2b_hqx(data)
except binascii.Incomplete:
pass
newdata = self.ifp.read(1)
if not newdata:
raise Error, 'Premature EOF on binhex file'
data = data + newdata
decdata = decdata + decdatacur
wtd = totalwtd - len(decdata)
if not decdata and not (self.eof):
raise Error, 'Premature EOF on binhex file'
continue
return decdata
def close(self):
self.ifp.close()
class _Rledecoderengine:
'''Read data via the RLE-coder'''
def __init__(self, ifp):
self.ifp = ifp
self.pre_buffer = ''
self.post_buffer = ''
self.eof = 0
def read(self, wtd):
if wtd > len(self.post_buffer):
self._fill(wtd - len(self.post_buffer))
rv = self.post_buffer[:wtd]
self.post_buffer = self.post_buffer[wtd:]
return rv
def _fill(self, wtd):
self.pre_buffer = self.pre_buffer + self.ifp.read(wtd + 4)
if self.ifp.eof:
self.post_buffer = self.post_buffer + binascii.rledecode_hqx(self.pre_buffer)
self.pre_buffer = ''
return None
mark = len(self.pre_buffer)
if self.pre_buffer[-3:] == RUNCHAR + '\x00' + RUNCHAR:
mark = mark - 3
elif self.pre_buffer[-1] == RUNCHAR:
mark = mark - 2
elif self.pre_buffer[-2:] == RUNCHAR + '\x00':
mark = mark - 2
elif self.pre_buffer[-2] == RUNCHAR:
pass
else:
mark = mark - 1
self.post_buffer = self.post_buffer + binascii.rledecode_hqx(self.pre_buffer[:mark])
self.pre_buffer = self.pre_buffer[mark:]
def close(self):
self.ifp.close()
class HexBin:
def __init__(self, ifp):
if type(ifp) == type(''):
ifp = open(ifp)
while None:
ch = ifp.read(1)
if not ch:
raise Error, 'No binhex data found'
if ch == '\r':
continue
if ch == ':':
break
if ch != '\n':
dummy = ifp.readline()
continue
hqxifp = _Hqxdecoderengine(ifp)
self.ifp = _Rledecoderengine(hqxifp)
self.crc = 0
self._readheader()
def _read(self, len):
data = self.ifp.read(len)
self.crc = binascii.crc_hqx(data, self.crc)
return data
def _checkcrc(self):
filecrc = struct.unpack('>h', self.ifp.read(2))[0] & 65535
self.crc = self.crc & 65535
if filecrc != self.crc:
raise Error, 'CRC error, computed %x, read %x' % (self.crc, filecrc)
self.crc = 0
def _readheader(self):
len = self._read(1)
fname = self._read(ord(len))
rest = self._read(1 + 4 + 4 + 2 + 4 + 4)
self._checkcrc()
type = rest[1:5]
creator = rest[5:9]
flags = struct.unpack('>h', rest[9:11])[0]
self.dlen = struct.unpack('>l', rest[11:15])[0]
self.rlen = struct.unpack('>l', rest[15:19])[0]
self.FName = fname
self.FInfo = FInfo()
self.FInfo.Creator = creator
self.FInfo.Type = type
self.FInfo.Flags = flags
self.state = _DID_HEADER
def read(self, *n):
if self.state != _DID_HEADER:
raise Error, 'Read data at wrong time'
if n:
n = n[0]
n = min(n, self.dlen)
else:
n = self.dlen
rv = ''
while len(rv) < n:
rv = rv + self._read(n - len(rv))
self.dlen = self.dlen - n
return rv
def close_data(self):
if self.state != _DID_HEADER:
raise Error, 'close_data at wrong time'
if self.dlen:
dummy = self._read(self.dlen)
self._checkcrc()
self.state = _DID_DATA
def read_rsrc(self, *n):
if self.state == _DID_HEADER:
self.close_data()
if self.state != _DID_DATA:
raise Error, 'Read resource data at wrong time'
if n:
n = n[0]
n = min(n, self.rlen)
else:
n = self.rlen
self.rlen = self.rlen - n
return self._read(n)
def close(self):
if self.rlen:
dummy = self.read_rsrc(self.rlen)
self._checkcrc()
self.state = _DID_RSRC
self.ifp.close()
def hexbin(inp, out):
'''(infilename, outfilename) - Decode binhexed file'''
ifp = HexBin(inp)
finfo = ifp.FInfo
if not out:
out = ifp.FName
if os.name == 'mac':
ofss = macfs.FSSpec(out)
out = ofss.as_pathname()
ofp = open(out, 'wb')
while None:
d = ifp.read(128000)
if not d:
break
ofp.close()
ifp.close_data()
d = ifp.read_rsrc(128000)
if d:
ofp = openrsrc(out, 'wb')
ofp.write(d)
while None:
d = ifp.read_rsrc(128000)
if not d:
break
ofp.close()
if os.name == 'mac':
nfinfo = ofss.GetFInfo()
nfinfo.Creator = finfo.Creator
nfinfo.Type = finfo.Type
nfinfo.Flags = finfo.Flags
ofss.SetFInfo(nfinfo)
ifp.close()
def _test():
if os.name == 'mac':
(fss, ok) = macfs.PromptGetFile('File to convert:')
if not ok:
sys.exit(0)
fname = fss.as_pathname()
else:
fname = sys.argv[1]
binhex(fname, fname + '.hqx')
hexbin(fname + '.hqx', fname + '.viahqx')
sys.exit(1)
if __name__ == '__main__':
_test()