def binread_sequence(self):
self.skip_blanks_and_comments()
seqtype = self.get()
elemtype = self.get()
if seqtype == '\x12': # 1D little endian sequence
shape = struct.unpack('<i', self.read(4))
endianness = 'little'
elif seqtype == '\x13': # 1D big endian sequence
shape = struct.unpack('>i', self.read(4))
endianness = 'big'
elif seqtype == '\x14': # 2D little endian sequence
shape = struct.unpack('<ii', self.read(8))
endianness = 'little'
elif seqtype == '\x15': # 2D big endian sequence
shape = struct.unpack('>ii', self.read(8))
endianness = 'big'
else:
raise TypeError(
'In binread_sequence, read invalid starting seqtype code char: '
+ seqtype)
seq = []
nelems = 1
for dim in shape:
nelems *= dim
if elemtype == '\xFF': # generic sequence
for i in xrange(nelems):
seq.append(self.binread())
if len(shape) > 1:
raise TypeError(
'Reading generic 2D sequence not yet suppored.. Must implement turning this into a list of lists...'
)
return seq
try:
atype = PL_TYPECODE_TO_ARRAYTYPE[elemtype]
except KeyError:
raise TypeError('Unsuppored array elemtype: ' + elemtype)
elemsize = int(atype[-1])
data = self.read(nelems * elemsize)
ar = numarray.fromstring(data, atype, shape)
if sys.byteorder != endianness:
ar.byteswap(True)
if self.return_lists:
ar = ar.tolist()
return ar
def binread_sequence(self):
self.skip_blanks_and_comments()
seqtype = self.get()
elemtype = self.get()
if seqtype=='\x12': # 1D little endian sequence
shape = struct.unpack('<i',self.read(4))
endianness = 'little'
elif seqtype=='\x13': # 1D big endian sequence
shape = struct.unpack('>i',self.read(4))
endianness = 'big'
elif seqtype=='\x14': # 2D little endian sequence
shape = struct.unpack('<ii',self.read(8))
endianness = 'little'
elif seqtype=='\x15': # 2D big endian sequence
shape = struct.unpack('>ii',self.read(8))
endianness = 'big'
else:
raise TypeError('In binread_sequence, read invalid starting seqtype code char: '+seqtype)
seq = []
nelems = 1
for dim in shape:
nelems *= dim
if elemtype=='\xFF': # generic sequence
for i in xrange(nelems):
seq.append(self.binread())
if len(shape)>1:
raise TypeError('Reading generic 2D sequence not yet suppored.. Must implement turning this into a list of lists...')
return seq
try:
atype = PL_TYPECODE_TO_ARRAYTYPE[elemtype]
except KeyError:
raise TypeError('Unsuppored array elemtype: '+elemtype)
elemsize = int(atype[-1])
data = self.read(nelems*elemsize)
ar = numarray.fromstring(data, atype, shape)
if sys.byteorder!=endianness:
ar.byteswap(True)
if self.return_lists:
ar = ar.tolist()
return ar
def binread(self):
self.skip_blanks_and_comments_and_separators()
c = self.get()
if c == "\x01": # signed char
return self.get()
elif c == "\x02": # unsigned char
return self.get()
elif c == "\x03": # short little endian
return struct.unpack('<h', self.read(2))[0]
elif c == "\x04": # short big endian
return struct.unpack('>h', self.read(2))[0]
elif c == "\x05": # unsigned short little endian
return struct.unpack('<H', self.read(2))[0]
elif c == "\x06": # unsigned short big endian
return struct.unpack('>H', self.read(2))[0]
elif c == "\x07": # 32 bit int little endian
return struct.unpack('<i', self.read(4))[0]
elif c == "\x08": # 32 bit int big endian
return struct.unpack('>i', self.read(4))[0]
elif c == "\x0B": # unsigned int little endian
return struct.unpack('<I', self.read(4))[0]
elif c == "\x0C": # unsigned int big endian
return struct.unpack('>I', self.read(4))[0]
elif c == "\x0E": # float little endian
return struct.unpack('<f', self.read(4))[0]
elif c == "\x0F": # float big endian
return struct.unpack('>f', self.read(4))[0]
elif c == "\x10": # double little endian
return struct.unpack('<d', self.read(8))[0]
elif c == "\x11": # double big endian
return struct.unpack('>d', self.read(8))[0]
elif c in "\x12\x13\x14\x15": # 1D or 2D sequence
self.unread(c)
return self.binread_sequence()
elif c == "\x16": # 64 bit int little endian
return struct.unpack('<q', self.read(8))[0]
elif c == "\x17": # 64 bit int big endian
return struct.unpack('>q', self.read(8))[0]
#elif c=="\x16": # DEPRECATED binary pair format (for backward compatibility)
# self.unread(c)
# return self.binread_pair()
elif c == '"': # string
self.unread(c)
return self.read_string()
elif c == '*': # pointer
self.unread(c)
return self.binread_pointer()
elif c == '{': # dictionary
self.unread(c)
return self.binread_dict()
elif c == '(': # tuple
self.unread(c)
return self.binread_tuple()
elif c == '0': # boolean
return False
elif c == '1':
return True
elif c in string.ascii_letters: # object name
self.unread(c)
return self.binread_object()
else:
raise TypeError("binread read unexpected character " + c)
def binread(self):
self.skip_blanks_and_comments_and_separators()
c = self.get()
if c=="\x01": # signed char
return self.get()
elif c=="\x02": # unsigned char
return self.get()
elif c=="\x03": # short little endian
return struct.unpack('<h',self.read(2))[0]
elif c=="\x04": # short big endian
return struct.unpack('>h',self.read(2))[0]
elif c=="\x05": # unsigned short little endian
return struct.unpack('<H',self.read(2))[0]
elif c=="\x06": # unsigned short big endian
return struct.unpack('>H',self.read(2))[0]
elif c=="\x07": # 32 bit int little endian
return struct.unpack('<i',self.read(4))[0]
elif c=="\x08": # 32 bit int big endian
return struct.unpack('>i',self.read(4))[0]
elif c=="\x0B": # unsigned int little endian
return struct.unpack('<I',self.read(4))[0]
elif c=="\x0C": # unsigned int big endian
return struct.unpack('>I',self.read(4))[0]
elif c=="\x0E": # float little endian
return struct.unpack('<f',self.read(4))[0]
elif c=="\x0F": # float big endian
return struct.unpack('>f',self.read(4))[0]
elif c=="\x10": # double little endian
return struct.unpack('<d',self.read(8))[0]
elif c=="\x11": # double big endian
return struct.unpack('>d',self.read(8))[0]
elif c in "\x12\x13\x14\x15": # 1D or 2D sequence
self.unread(c)
return self.binread_sequence()
elif c=="\x16": # 64 bit int little endian
return struct.unpack('<q',self.read(8))[0]
elif c=="\x17": # 64 bit int big endian
return struct.unpack('>q',self.read(8))[0]
#elif c=="\x16": # DEPRECATED binary pair format (for backward compatibility)
# self.unread(c)
# return self.binread_pair()
elif c=='"': # string
self.unread(c)
return self.read_string()
elif c=='*': # pointer
self.unread(c)
return self.binread_pointer()
elif c=='{': # dictionary
self.unread(c)
return self.binread_dict()
elif c=='(': # tuple
self.unread(c)
return self.binread_tuple()
elif c=='0': # boolean
return False
elif c=='1':
return True
elif c in string.ascii_letters: # object name
self.unread(c)
return self.binread_object()
else:
raise TypeError("binread read unexpected character "+c)
