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author | Ori Bernstein <ori@eigenstate.org> | 2021-06-14 00:00:37 +0000 |
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committer | Ori Bernstein <ori@eigenstate.org> | 2021-06-14 00:00:37 +0000 |
commit | a73a964e51247ed169d322c725a3a18859f109a3 (patch) | |
tree | 3f752d117274d444bda44e85609aeac1acf313f3 /sys/lib/python/xdrlib.py | |
parent | e64efe273fcb921a61bf27d33b230c4e64fcd425 (diff) |
python, hg: tow outside the environment.
they've served us well, and can ride off into the sunset.
Diffstat (limited to 'sys/lib/python/xdrlib.py')
-rw-r--r-- | sys/lib/python/xdrlib.py | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/sys/lib/python/xdrlib.py b/sys/lib/python/xdrlib.py deleted file mode 100644 index b349eb9b7..000000000 --- a/sys/lib/python/xdrlib.py +++ /dev/null @@ -1,287 +0,0 @@ -"""Implements (a subset of) Sun XDR -- eXternal Data Representation. - -See: RFC 1014 - -""" - -import struct -try: - from cStringIO import StringIO as _StringIO -except ImportError: - from StringIO import StringIO as _StringIO - -__all__ = ["Error", "Packer", "Unpacker", "ConversionError"] - -# exceptions -class Error(Exception): - """Exception class for this module. Use: - - except xdrlib.Error, var: - # var has the Error instance for the exception - - Public ivars: - msg -- contains the message - - """ - def __init__(self, msg): - self.msg = msg - def __repr__(self): - return repr(self.msg) - def __str__(self): - return str(self.msg) - - -class ConversionError(Error): - pass - - - -class Packer: - """Pack various data representations into a buffer.""" - - def __init__(self): - self.reset() - - def reset(self): - self.__buf = _StringIO() - - def get_buffer(self): - return self.__buf.getvalue() - # backwards compatibility - get_buf = get_buffer - - def pack_uint(self, x): - self.__buf.write(struct.pack('>L', x)) - - pack_int = pack_uint - pack_enum = pack_int - - def pack_bool(self, x): - if x: self.__buf.write('\0\0\0\1') - else: self.__buf.write('\0\0\0\0') - - def pack_uhyper(self, x): - self.pack_uint(x>>32 & 0xffffffffL) - self.pack_uint(x & 0xffffffffL) - - pack_hyper = pack_uhyper - - def pack_float(self, x): - try: self.__buf.write(struct.pack('>f', x)) - except struct.error, msg: - raise ConversionError, msg - - def pack_double(self, x): - try: self.__buf.write(struct.pack('>d', x)) - except struct.error, msg: - raise ConversionError, msg - - def pack_fstring(self, n, s): - if n < 0: - raise ValueError, 'fstring size must be nonnegative' - data = s[:n] - n = ((n+3)//4)*4 - data = data + (n - len(data)) * '\0' - self.__buf.write(data) - - pack_fopaque = pack_fstring - - def pack_string(self, s): - n = len(s) - self.pack_uint(n) - self.pack_fstring(n, s) - - pack_opaque = pack_string - pack_bytes = pack_string - - def pack_list(self, list, pack_item): - for item in list: - self.pack_uint(1) - pack_item(item) - self.pack_uint(0) - - def pack_farray(self, n, list, pack_item): - if len(list) != n: - raise ValueError, 'wrong array size' - for item in list: - pack_item(item) - - def pack_array(self, list, pack_item): - n = len(list) - self.pack_uint(n) - self.pack_farray(n, list, pack_item) - - - -class Unpacker: - """Unpacks various data representations from the given buffer.""" - - def __init__(self, data): - self.reset(data) - - def reset(self, data): - self.__buf = data - self.__pos = 0 - - def get_position(self): - return self.__pos - - def set_position(self, position): - self.__pos = position - - def get_buffer(self): - return self.__buf - - def done(self): - if self.__pos < len(self.__buf): - raise Error('unextracted data remains') - - def unpack_uint(self): - i = self.__pos - self.__pos = j = i+4 - data = self.__buf[i:j] - if len(data) < 4: - raise EOFError - x = struct.unpack('>L', data)[0] - try: - return int(x) - except OverflowError: - return x - - def unpack_int(self): - i = self.__pos - self.__pos = j = i+4 - data = self.__buf[i:j] - if len(data) < 4: - raise EOFError - return struct.unpack('>l', data)[0] - - unpack_enum = unpack_int - - def unpack_bool(self): - return bool(self.unpack_int()) - - def unpack_uhyper(self): - hi = self.unpack_uint() - lo = self.unpack_uint() - return long(hi)<<32 | lo - - def unpack_hyper(self): - x = self.unpack_uhyper() - if x >= 0x8000000000000000L: - x = x - 0x10000000000000000L - return x - - def unpack_float(self): - i = self.__pos - self.__pos = j = i+4 - data = self.__buf[i:j] - if len(data) < 4: - raise EOFError - return struct.unpack('>f', data)[0] - - def unpack_double(self): - i = self.__pos - self.__pos = j = i+8 - data = self.__buf[i:j] - if len(data) < 8: - raise EOFError - return struct.unpack('>d', data)[0] - - def unpack_fstring(self, n): - if n < 0: - raise ValueError, 'fstring size must be nonnegative' - i = self.__pos - j = i + (n+3)//4*4 - if j > len(self.__buf): - raise EOFError - self.__pos = j - return self.__buf[i:i+n] - - unpack_fopaque = unpack_fstring - - def unpack_string(self): - n = self.unpack_uint() - return self.unpack_fstring(n) - - unpack_opaque = unpack_string - unpack_bytes = unpack_string - - def unpack_list(self, unpack_item): - list = [] - while 1: - x = self.unpack_uint() - if x == 0: break - if x != 1: - raise ConversionError, '0 or 1 expected, got %r' % (x,) - item = unpack_item() - list.append(item) - return list - - def unpack_farray(self, n, unpack_item): - list = [] - for i in range(n): - list.append(unpack_item()) - return list - - def unpack_array(self, unpack_item): - n = self.unpack_uint() - return self.unpack_farray(n, unpack_item) - - -# test suite -def _test(): - p = Packer() - packtest = [ - (p.pack_uint, (9,)), - (p.pack_bool, (True,)), - (p.pack_bool, (False,)), - (p.pack_uhyper, (45L,)), - (p.pack_float, (1.9,)), - (p.pack_double, (1.9,)), - (p.pack_string, ('hello world',)), - (p.pack_list, (range(5), p.pack_uint)), - (p.pack_array, (['what', 'is', 'hapnin', 'doctor'], p.pack_string)), - ] - succeedlist = [1] * len(packtest) - count = 0 - for method, args in packtest: - print 'pack test', count, - try: - method(*args) - print 'succeeded' - except ConversionError, var: - print 'ConversionError:', var.msg - succeedlist[count] = 0 - count = count + 1 - data = p.get_buffer() - # now verify - up = Unpacker(data) - unpacktest = [ - (up.unpack_uint, (), lambda x: x == 9), - (up.unpack_bool, (), lambda x: x is True), - (up.unpack_bool, (), lambda x: x is False), - (up.unpack_uhyper, (), lambda x: x == 45L), - (up.unpack_float, (), lambda x: 1.89 < x < 1.91), - (up.unpack_double, (), lambda x: 1.89 < x < 1.91), - (up.unpack_string, (), lambda x: x == 'hello world'), - (up.unpack_list, (up.unpack_uint,), lambda x: x == range(5)), - (up.unpack_array, (up.unpack_string,), - lambda x: x == ['what', 'is', 'hapnin', 'doctor']), - ] - count = 0 - for method, args, pred in unpacktest: - print 'unpack test', count, - try: - if succeedlist[count]: - x = method(*args) - print pred(x) and 'succeeded' or 'failed', ':', x - else: - print 'skipping' - except ConversionError, var: - print 'ConversionError:', var.msg - count = count + 1 - - -if __name__ == '__main__': - _test() |