mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-26 23:44:56 +01:00
715 lines
26 KiB
Python
Executable File
715 lines
26 KiB
Python
Executable File
"""Fallback pure Python implementation of msgpack"""
|
|
|
|
import sys
|
|
import array
|
|
import struct
|
|
|
|
if sys.version_info[0] == 3:
|
|
PY3 = True
|
|
int_types = int
|
|
Unicode = str
|
|
xrange = range
|
|
def dict_iteritems(d):
|
|
return d.items()
|
|
else:
|
|
PY3 = False
|
|
int_types = (int, long)
|
|
Unicode = unicode
|
|
def dict_iteritems(d):
|
|
return d.iteritems()
|
|
|
|
|
|
if hasattr(sys, 'pypy_version_info'):
|
|
# cStringIO is slow on PyPy, StringIO is faster. However: PyPy's own
|
|
# StringBuilder is fastest.
|
|
from __pypy__ import newlist_hint
|
|
from __pypy__.builders import StringBuilder
|
|
USING_STRINGBUILDER = True
|
|
class StringIO(object):
|
|
def __init__(self, s=b''):
|
|
if s:
|
|
self.builder = StringBuilder(len(s))
|
|
self.builder.append(s)
|
|
else:
|
|
self.builder = StringBuilder()
|
|
def write(self, s):
|
|
self.builder.append(s)
|
|
def getvalue(self):
|
|
return self.builder.build()
|
|
else:
|
|
USING_STRINGBUILDER = False
|
|
from io import BytesIO as StringIO
|
|
newlist_hint = lambda size: []
|
|
|
|
from msgpack.exceptions import (
|
|
BufferFull,
|
|
OutOfData,
|
|
UnpackValueError,
|
|
PackValueError,
|
|
ExtraData)
|
|
|
|
from msgpack import ExtType
|
|
|
|
|
|
EX_SKIP = 0
|
|
EX_CONSTRUCT = 1
|
|
EX_READ_ARRAY_HEADER = 2
|
|
EX_READ_MAP_HEADER = 3
|
|
|
|
TYPE_IMMEDIATE = 0
|
|
TYPE_ARRAY = 1
|
|
TYPE_MAP = 2
|
|
TYPE_RAW = 3
|
|
TYPE_BIN = 4
|
|
TYPE_EXT = 5
|
|
|
|
DEFAULT_RECURSE_LIMIT = 511
|
|
|
|
|
|
def unpack(stream, **kwargs):
|
|
"""
|
|
Unpack an object from `stream`.
|
|
|
|
Raises `ExtraData` when `packed` contains extra bytes.
|
|
See :class:`Unpacker` for options.
|
|
"""
|
|
unpacker = Unpacker(stream, **kwargs)
|
|
ret = unpacker._fb_unpack()
|
|
if unpacker._fb_got_extradata():
|
|
raise ExtraData(ret, unpacker._fb_get_extradata())
|
|
return ret
|
|
|
|
|
|
def unpackb(packed, **kwargs):
|
|
"""
|
|
Unpack an object from `packed`.
|
|
|
|
Raises `ExtraData` when `packed` contains extra bytes.
|
|
See :class:`Unpacker` for options.
|
|
"""
|
|
unpacker = Unpacker(None, **kwargs)
|
|
unpacker.feed(packed)
|
|
try:
|
|
ret = unpacker._fb_unpack()
|
|
except OutOfData:
|
|
raise UnpackValueError("Data is not enough.")
|
|
if unpacker._fb_got_extradata():
|
|
raise ExtraData(ret, unpacker._fb_get_extradata())
|
|
return ret
|
|
|
|
|
|
class Unpacker(object):
|
|
"""
|
|
Streaming unpacker.
|
|
|
|
`file_like` is a file-like object having a `.read(n)` method.
|
|
When `Unpacker` is initialized with a `file_like`, `.feed()` is not
|
|
usable.
|
|
|
|
`read_size` is used for `file_like.read(read_size)`.
|
|
|
|
If `use_list` is True (default), msgpack lists are deserialized to Python
|
|
lists. Otherwise they are deserialized to tuples.
|
|
|
|
`object_hook` is the same as in simplejson. If it is not None, it should
|
|
be callable and Unpacker calls it with a dict argument after deserializing
|
|
a map.
|
|
|
|
`object_pairs_hook` is the same as in simplejson. If it is not None, it
|
|
should be callable and Unpacker calls it with a list of key-value pairs
|
|
after deserializing a map.
|
|
|
|
`ext_hook` is callback for ext (User defined) type. It called with two
|
|
arguments: (code, bytes). default: `msgpack.ExtType`
|
|
|
|
`encoding` is the encoding used for decoding msgpack bytes. If it is
|
|
None (default), msgpack bytes are deserialized to Python bytes.
|
|
|
|
`unicode_errors` is used for decoding bytes.
|
|
|
|
`max_buffer_size` limits the buffer size. 0 means INT_MAX (default).
|
|
|
|
Raises `BufferFull` exception when it is unsufficient.
|
|
|
|
You should set this parameter when unpacking data from an untrustred source.
|
|
|
|
example of streaming deserialization from file-like object::
|
|
|
|
unpacker = Unpacker(file_like)
|
|
for o in unpacker:
|
|
do_something(o)
|
|
|
|
example of streaming deserialization from socket::
|
|
|
|
unpacker = Unpacker()
|
|
while 1:
|
|
buf = sock.recv(1024*2)
|
|
if not buf:
|
|
break
|
|
unpacker.feed(buf)
|
|
for o in unpacker:
|
|
do_something(o)
|
|
"""
|
|
|
|
def __init__(self, file_like=None, read_size=0, use_list=True,
|
|
object_hook=None, object_pairs_hook=None, list_hook=None,
|
|
encoding=None, unicode_errors='strict', max_buffer_size=0,
|
|
ext_hook=ExtType):
|
|
if file_like is None:
|
|
self._fb_feeding = True
|
|
else:
|
|
if not callable(file_like.read):
|
|
raise TypeError("`file_like.read` must be callable")
|
|
self.file_like = file_like
|
|
self._fb_feeding = False
|
|
self._fb_buffers = []
|
|
self._fb_buf_o = 0
|
|
self._fb_buf_i = 0
|
|
self._fb_buf_n = 0
|
|
self._max_buffer_size = max_buffer_size or 2**31-1
|
|
if read_size > self._max_buffer_size:
|
|
raise ValueError("read_size must be smaller than max_buffer_size")
|
|
self._read_size = read_size or min(self._max_buffer_size, 2048)
|
|
self._encoding = encoding
|
|
self._unicode_errors = unicode_errors
|
|
self._use_list = use_list
|
|
self._list_hook = list_hook
|
|
self._object_hook = object_hook
|
|
self._object_pairs_hook = object_pairs_hook
|
|
self._ext_hook = ext_hook
|
|
|
|
if list_hook is not None and not callable(list_hook):
|
|
raise TypeError('`list_hook` is not callable')
|
|
if object_hook is not None and not callable(object_hook):
|
|
raise TypeError('`object_hook` is not callable')
|
|
if object_pairs_hook is not None and not callable(object_pairs_hook):
|
|
raise TypeError('`object_pairs_hook` is not callable')
|
|
if object_hook is not None and object_pairs_hook is not None:
|
|
raise TypeError("object_pairs_hook and object_hook are mutually "
|
|
"exclusive")
|
|
if not callable(ext_hook):
|
|
raise TypeError("`ext_hook` is not callable")
|
|
|
|
def feed(self, next_bytes):
|
|
if isinstance(next_bytes, array.array):
|
|
next_bytes = next_bytes.tostring()
|
|
elif isinstance(next_bytes, bytearray):
|
|
next_bytes = bytes(next_bytes)
|
|
assert self._fb_feeding
|
|
if self._fb_buf_n + len(next_bytes) > self._max_buffer_size:
|
|
raise BufferFull
|
|
self._fb_buf_n += len(next_bytes)
|
|
self._fb_buffers.append(next_bytes)
|
|
|
|
def _fb_consume(self):
|
|
self._fb_buffers = self._fb_buffers[self._fb_buf_i:]
|
|
if self._fb_buffers:
|
|
self._fb_buffers[0] = self._fb_buffers[0][self._fb_buf_o:]
|
|
self._fb_buf_o = 0
|
|
self._fb_buf_i = 0
|
|
self._fb_buf_n = sum(map(len, self._fb_buffers))
|
|
|
|
def _fb_got_extradata(self):
|
|
if self._fb_buf_i != len(self._fb_buffers):
|
|
return True
|
|
if self._fb_feeding:
|
|
return False
|
|
if not self.file_like:
|
|
return False
|
|
if self.file_like.read(1):
|
|
return True
|
|
return False
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def read_bytes(self, n):
|
|
return self._fb_read(n)
|
|
|
|
def _fb_rollback(self):
|
|
self._fb_buf_i = 0
|
|
self._fb_buf_o = 0
|
|
|
|
def _fb_get_extradata(self):
|
|
bufs = self._fb_buffers[self._fb_buf_i:]
|
|
if bufs:
|
|
bufs[0] = bufs[0][self._fb_buf_o:]
|
|
return b''.join(bufs)
|
|
|
|
def _fb_read(self, n, write_bytes=None):
|
|
buffs = self._fb_buffers
|
|
if (write_bytes is None and self._fb_buf_i < len(buffs) and
|
|
self._fb_buf_o + n < len(buffs[self._fb_buf_i])):
|
|
self._fb_buf_o += n
|
|
return buffs[self._fb_buf_i][self._fb_buf_o - n:self._fb_buf_o]
|
|
|
|
ret = b''
|
|
while len(ret) != n:
|
|
if self._fb_buf_i == len(buffs):
|
|
if self._fb_feeding:
|
|
break
|
|
tmp = self.file_like.read(self._read_size)
|
|
if not tmp:
|
|
break
|
|
buffs.append(tmp)
|
|
continue
|
|
sliced = n - len(ret)
|
|
ret += buffs[self._fb_buf_i][self._fb_buf_o:self._fb_buf_o + sliced]
|
|
self._fb_buf_o += sliced
|
|
if self._fb_buf_o >= len(buffs[self._fb_buf_i]):
|
|
self._fb_buf_o = 0
|
|
self._fb_buf_i += 1
|
|
if len(ret) != n:
|
|
self._fb_rollback()
|
|
raise OutOfData
|
|
if write_bytes is not None:
|
|
write_bytes(ret)
|
|
return ret
|
|
|
|
def _read_header(self, execute=EX_CONSTRUCT, write_bytes=None):
|
|
typ = TYPE_IMMEDIATE
|
|
n = 0
|
|
obj = None
|
|
c = self._fb_read(1, write_bytes)
|
|
b = ord(c)
|
|
if b & 0b10000000 == 0:
|
|
obj = b
|
|
elif b & 0b11100000 == 0b11100000:
|
|
obj = struct.unpack("b", c)[0]
|
|
elif b & 0b11100000 == 0b10100000:
|
|
n = b & 0b00011111
|
|
obj = self._fb_read(n, write_bytes)
|
|
typ = TYPE_RAW
|
|
elif b & 0b11110000 == 0b10010000:
|
|
n = b & 0b00001111
|
|
typ = TYPE_ARRAY
|
|
elif b & 0b11110000 == 0b10000000:
|
|
n = b & 0b00001111
|
|
typ = TYPE_MAP
|
|
elif b == 0xc0:
|
|
obj = None
|
|
elif b == 0xc2:
|
|
obj = False
|
|
elif b == 0xc3:
|
|
obj = True
|
|
elif b == 0xc4:
|
|
typ = TYPE_BIN
|
|
n = struct.unpack("B", self._fb_read(1, write_bytes))[0]
|
|
obj = self._fb_read(n, write_bytes)
|
|
elif b == 0xc5:
|
|
typ = TYPE_BIN
|
|
n = struct.unpack(">H", self._fb_read(2, write_bytes))[0]
|
|
obj = self._fb_read(n, write_bytes)
|
|
elif b == 0xc6:
|
|
typ = TYPE_BIN
|
|
n = struct.unpack(">I", self._fb_read(4, write_bytes))[0]
|
|
obj = self._fb_read(n, write_bytes)
|
|
elif b == 0xc7: # ext 8
|
|
typ = TYPE_EXT
|
|
L, n = struct.unpack('Bb', self._fb_read(2, write_bytes))
|
|
obj = self._fb_read(L, write_bytes)
|
|
elif b == 0xc8: # ext 16
|
|
typ = TYPE_EXT
|
|
L, n = struct.unpack('>Hb', self._fb_read(3, write_bytes))
|
|
obj = self._fb_read(L, write_bytes)
|
|
elif b == 0xc9: # ext 32
|
|
typ = TYPE_EXT
|
|
L, n = struct.unpack('>Ib', self._fb_read(5, write_bytes))
|
|
obj = self._fb_read(L, write_bytes)
|
|
elif b == 0xca:
|
|
obj = struct.unpack(">f", self._fb_read(4, write_bytes))[0]
|
|
elif b == 0xcb:
|
|
obj = struct.unpack(">d", self._fb_read(8, write_bytes))[0]
|
|
elif b == 0xcc:
|
|
obj = struct.unpack("B", self._fb_read(1, write_bytes))[0]
|
|
elif b == 0xcd:
|
|
obj = struct.unpack(">H", self._fb_read(2, write_bytes))[0]
|
|
elif b == 0xce:
|
|
obj = struct.unpack(">I", self._fb_read(4, write_bytes))[0]
|
|
elif b == 0xcf:
|
|
obj = struct.unpack(">Q", self._fb_read(8, write_bytes))[0]
|
|
elif b == 0xd0:
|
|
obj = struct.unpack("b", self._fb_read(1, write_bytes))[0]
|
|
elif b == 0xd1:
|
|
obj = struct.unpack(">h", self._fb_read(2, write_bytes))[0]
|
|
elif b == 0xd2:
|
|
obj = struct.unpack(">i", self._fb_read(4, write_bytes))[0]
|
|
elif b == 0xd3:
|
|
obj = struct.unpack(">q", self._fb_read(8, write_bytes))[0]
|
|
elif b == 0xd4: # fixext 1
|
|
typ = TYPE_EXT
|
|
n, obj = struct.unpack('b1s', self._fb_read(2, write_bytes))
|
|
elif b == 0xd5: # fixext 2
|
|
typ = TYPE_EXT
|
|
n, obj = struct.unpack('b2s', self._fb_read(3, write_bytes))
|
|
elif b == 0xd6: # fixext 4
|
|
typ = TYPE_EXT
|
|
n, obj = struct.unpack('b4s', self._fb_read(5, write_bytes))
|
|
elif b == 0xd7: # fixext 8
|
|
typ = TYPE_EXT
|
|
n, obj = struct.unpack('b8s', self._fb_read(9, write_bytes))
|
|
elif b == 0xd8: # fixext 16
|
|
typ = TYPE_EXT
|
|
n, obj = struct.unpack('b16s', self._fb_read(17, write_bytes))
|
|
elif b == 0xd9:
|
|
typ = TYPE_RAW
|
|
n = struct.unpack("B", self._fb_read(1, write_bytes))[0]
|
|
obj = self._fb_read(n, write_bytes)
|
|
elif b == 0xda:
|
|
typ = TYPE_RAW
|
|
n = struct.unpack(">H", self._fb_read(2, write_bytes))[0]
|
|
obj = self._fb_read(n, write_bytes)
|
|
elif b == 0xdb:
|
|
typ = TYPE_RAW
|
|
n = struct.unpack(">I", self._fb_read(4, write_bytes))[0]
|
|
obj = self._fb_read(n, write_bytes)
|
|
elif b == 0xdc:
|
|
n = struct.unpack(">H", self._fb_read(2, write_bytes))[0]
|
|
typ = TYPE_ARRAY
|
|
elif b == 0xdd:
|
|
n = struct.unpack(">I", self._fb_read(4, write_bytes))[0]
|
|
typ = TYPE_ARRAY
|
|
elif b == 0xde:
|
|
n = struct.unpack(">H", self._fb_read(2, write_bytes))[0]
|
|
typ = TYPE_MAP
|
|
elif b == 0xdf:
|
|
n = struct.unpack(">I", self._fb_read(4, write_bytes))[0]
|
|
typ = TYPE_MAP
|
|
else:
|
|
raise UnpackValueError("Unknown header: 0x%x" % b)
|
|
return typ, n, obj
|
|
|
|
def _fb_unpack(self, execute=EX_CONSTRUCT, write_bytes=None):
|
|
typ, n, obj = self._read_header(execute, write_bytes)
|
|
|
|
if execute == EX_READ_ARRAY_HEADER:
|
|
if typ != TYPE_ARRAY:
|
|
raise UnpackValueError("Expected array")
|
|
return n
|
|
if execute == EX_READ_MAP_HEADER:
|
|
if typ != TYPE_MAP:
|
|
raise UnpackValueError("Expected map")
|
|
return n
|
|
# TODO should we eliminate the recursion?
|
|
if typ == TYPE_ARRAY:
|
|
if execute == EX_SKIP:
|
|
for i in xrange(n):
|
|
# TODO check whether we need to call `list_hook`
|
|
self._fb_unpack(EX_SKIP, write_bytes)
|
|
return
|
|
ret = newlist_hint(n)
|
|
for i in xrange(n):
|
|
ret.append(self._fb_unpack(EX_CONSTRUCT, write_bytes))
|
|
if self._list_hook is not None:
|
|
ret = self._list_hook(ret)
|
|
# TODO is the interaction between `list_hook` and `use_list` ok?
|
|
return ret if self._use_list else tuple(ret)
|
|
if typ == TYPE_MAP:
|
|
if execute == EX_SKIP:
|
|
for i in xrange(n):
|
|
# TODO check whether we need to call hooks
|
|
self._fb_unpack(EX_SKIP, write_bytes)
|
|
self._fb_unpack(EX_SKIP, write_bytes)
|
|
return
|
|
if self._object_pairs_hook is not None:
|
|
ret = self._object_pairs_hook(
|
|
(self._fb_unpack(EX_CONSTRUCT, write_bytes),
|
|
self._fb_unpack(EX_CONSTRUCT, write_bytes))
|
|
for _ in xrange(n))
|
|
else:
|
|
ret = {}
|
|
for _ in xrange(n):
|
|
key = self._fb_unpack(EX_CONSTRUCT, write_bytes)
|
|
ret[key] = self._fb_unpack(EX_CONSTRUCT, write_bytes)
|
|
if self._object_hook is not None:
|
|
ret = self._object_hook(ret)
|
|
return ret
|
|
if execute == EX_SKIP:
|
|
return
|
|
if typ == TYPE_RAW:
|
|
if self._encoding is not None:
|
|
obj = obj.decode(self._encoding, self._unicode_errors)
|
|
return obj
|
|
if typ == TYPE_EXT:
|
|
return self._ext_hook(n, obj)
|
|
if typ == TYPE_BIN:
|
|
return obj
|
|
assert typ == TYPE_IMMEDIATE
|
|
return obj
|
|
|
|
def next(self):
|
|
try:
|
|
ret = self._fb_unpack(EX_CONSTRUCT, None)
|
|
self._fb_consume()
|
|
return ret
|
|
except OutOfData:
|
|
raise StopIteration
|
|
__next__ = next
|
|
|
|
def skip(self, write_bytes=None):
|
|
self._fb_unpack(EX_SKIP, write_bytes)
|
|
self._fb_consume()
|
|
|
|
def unpack(self, write_bytes=None):
|
|
ret = self._fb_unpack(EX_CONSTRUCT, write_bytes)
|
|
self._fb_consume()
|
|
return ret
|
|
|
|
def read_array_header(self, write_bytes=None):
|
|
ret = self._fb_unpack(EX_READ_ARRAY_HEADER, write_bytes)
|
|
self._fb_consume()
|
|
return ret
|
|
|
|
def read_map_header(self, write_bytes=None):
|
|
ret = self._fb_unpack(EX_READ_MAP_HEADER, write_bytes)
|
|
self._fb_consume()
|
|
return ret
|
|
|
|
|
|
class Packer(object):
|
|
"""
|
|
MessagePack Packer
|
|
|
|
usage:
|
|
|
|
packer = Packer()
|
|
astream.write(packer.pack(a))
|
|
astream.write(packer.pack(b))
|
|
|
|
Packer's constructor has some keyword arguments:
|
|
|
|
:param callable default:
|
|
Convert user type to builtin type that Packer supports.
|
|
See also simplejson's document.
|
|
:param str encoding:
|
|
Convert unicode to bytes with this encoding. (default: 'utf-8')
|
|
:param str unicode_errors:
|
|
Error handler for encoding unicode. (default: 'strict')
|
|
:param bool use_single_float:
|
|
Use single precision float type for float. (default: False)
|
|
:param bool autoreset:
|
|
Reset buffer after each pack and return it's content as `bytes`. (default: True).
|
|
If set this to false, use `bytes()` to get content and `.reset()` to clear buffer.
|
|
:param bool use_bin_type:
|
|
Use bin type introduced in msgpack spec 2.0 for bytes.
|
|
It also enable str8 type for unicode.
|
|
"""
|
|
def __init__(self, default=None, encoding='utf-8', unicode_errors='strict',
|
|
use_single_float=False, autoreset=True, use_bin_type=False):
|
|
self._use_float = use_single_float
|
|
self._autoreset = autoreset
|
|
self._use_bin_type = use_bin_type
|
|
self._encoding = encoding
|
|
self._unicode_errors = unicode_errors
|
|
self._buffer = StringIO()
|
|
if default is not None:
|
|
if not callable(default):
|
|
raise TypeError("default must be callable")
|
|
self._default = default
|
|
|
|
def _pack(self, obj, nest_limit=DEFAULT_RECURSE_LIMIT, isinstance=isinstance):
|
|
default_used = False
|
|
while True:
|
|
if nest_limit < 0:
|
|
raise PackValueError("recursion limit exceeded")
|
|
if obj is None:
|
|
return self._buffer.write(b"\xc0")
|
|
if isinstance(obj, bool):
|
|
if obj:
|
|
return self._buffer.write(b"\xc3")
|
|
return self._buffer.write(b"\xc2")
|
|
if isinstance(obj, int_types):
|
|
if 0 <= obj < 0x80:
|
|
return self._buffer.write(struct.pack("B", obj))
|
|
if -0x20 <= obj < 0:
|
|
return self._buffer.write(struct.pack("b", obj))
|
|
if 0x80 <= obj <= 0xff:
|
|
return self._buffer.write(struct.pack("BB", 0xcc, obj))
|
|
if -0x80 <= obj < 0:
|
|
return self._buffer.write(struct.pack(">Bb", 0xd0, obj))
|
|
if 0xff < obj <= 0xffff:
|
|
return self._buffer.write(struct.pack(">BH", 0xcd, obj))
|
|
if -0x8000 <= obj < -0x80:
|
|
return self._buffer.write(struct.pack(">Bh", 0xd1, obj))
|
|
if 0xffff < obj <= 0xffffffff:
|
|
return self._buffer.write(struct.pack(">BI", 0xce, obj))
|
|
if -0x80000000 <= obj < -0x8000:
|
|
return self._buffer.write(struct.pack(">Bi", 0xd2, obj))
|
|
if 0xffffffff < obj <= 0xffffffffffffffff:
|
|
return self._buffer.write(struct.pack(">BQ", 0xcf, obj))
|
|
if -0x8000000000000000 <= obj < -0x80000000:
|
|
return self._buffer.write(struct.pack(">Bq", 0xd3, obj))
|
|
raise PackValueError("Integer value out of range")
|
|
if self._use_bin_type and isinstance(obj, bytes):
|
|
n = len(obj)
|
|
if n <= 0xff:
|
|
self._buffer.write(struct.pack('>BB', 0xc4, n))
|
|
elif n <= 0xffff:
|
|
self._buffer.write(struct.pack(">BH", 0xc5, n))
|
|
elif n <= 0xffffffff:
|
|
self._buffer.write(struct.pack(">BI", 0xc6, n))
|
|
else:
|
|
raise PackValueError("Bytes is too large")
|
|
return self._buffer.write(obj)
|
|
if isinstance(obj, (Unicode, bytes)):
|
|
if isinstance(obj, Unicode):
|
|
if self._encoding is None:
|
|
raise TypeError(
|
|
"Can't encode unicode string: "
|
|
"no encoding is specified")
|
|
obj = obj.encode(self._encoding, self._unicode_errors)
|
|
n = len(obj)
|
|
if n <= 0x1f:
|
|
self._buffer.write(struct.pack('B', 0xa0 + n))
|
|
elif self._use_bin_type and n <= 0xff:
|
|
self._buffer.write(struct.pack('>BB', 0xd9, n))
|
|
elif n <= 0xffff:
|
|
self._buffer.write(struct.pack(">BH", 0xda, n))
|
|
elif n <= 0xffffffff:
|
|
self._buffer.write(struct.pack(">BI", 0xdb, n))
|
|
else:
|
|
raise PackValueError("String is too large")
|
|
return self._buffer.write(obj)
|
|
if isinstance(obj, float):
|
|
if self._use_float:
|
|
return self._buffer.write(struct.pack(">Bf", 0xca, obj))
|
|
return self._buffer.write(struct.pack(">Bd", 0xcb, obj))
|
|
if isinstance(obj, ExtType):
|
|
code = obj.code
|
|
data = obj.data
|
|
assert isinstance(code, int)
|
|
assert isinstance(data, bytes)
|
|
L = len(data)
|
|
if L == 1:
|
|
self._buffer.write(b'\xd4')
|
|
elif L == 2:
|
|
self._buffer.write(b'\xd5')
|
|
elif L == 4:
|
|
self._buffer.write(b'\xd6')
|
|
elif L == 8:
|
|
self._buffer.write(b'\xd7')
|
|
elif L == 16:
|
|
self._buffer.write(b'\xd8')
|
|
elif L <= 0xff:
|
|
self._buffer.write(struct.pack(">BB", 0xc7, L))
|
|
elif L <= 0xffff:
|
|
self._buffer.write(struct.pack(">BH", 0xc8, L))
|
|
else:
|
|
self._buffer.write(struct.pack(">BI", 0xc9, L))
|
|
self._buffer.write(struct.pack("b", code))
|
|
self._buffer.write(data)
|
|
return
|
|
if isinstance(obj, (list, tuple)):
|
|
n = len(obj)
|
|
self._fb_pack_array_header(n)
|
|
for i in xrange(n):
|
|
self._pack(obj[i], nest_limit - 1)
|
|
return
|
|
if isinstance(obj, dict):
|
|
return self._fb_pack_map_pairs(len(obj), dict_iteritems(obj),
|
|
nest_limit - 1)
|
|
if not default_used and self._default is not None:
|
|
obj = self._default(obj)
|
|
default_used = 1
|
|
continue
|
|
raise TypeError("Cannot serialize %r" % obj)
|
|
|
|
def pack(self, obj):
|
|
self._pack(obj)
|
|
ret = self._buffer.getvalue()
|
|
if self._autoreset:
|
|
self._buffer = StringIO()
|
|
elif USING_STRINGBUILDER:
|
|
self._buffer = StringIO(ret)
|
|
return ret
|
|
|
|
def pack_map_pairs(self, pairs):
|
|
self._fb_pack_map_pairs(len(pairs), pairs)
|
|
ret = self._buffer.getvalue()
|
|
if self._autoreset:
|
|
self._buffer = StringIO()
|
|
elif USING_STRINGBUILDER:
|
|
self._buffer = StringIO(ret)
|
|
return ret
|
|
|
|
def pack_array_header(self, n):
|
|
if n >= 2**32:
|
|
raise ValueError
|
|
self._fb_pack_array_header(n)
|
|
ret = self._buffer.getvalue()
|
|
if self._autoreset:
|
|
self._buffer = StringIO()
|
|
elif USING_STRINGBUILDER:
|
|
self._buffer = StringIO(ret)
|
|
return ret
|
|
|
|
def pack_map_header(self, n):
|
|
if n >= 2**32:
|
|
raise ValueError
|
|
self._fb_pack_map_header(n)
|
|
ret = self._buffer.getvalue()
|
|
if self._autoreset:
|
|
self._buffer = StringIO()
|
|
elif USING_STRINGBUILDER:
|
|
self._buffer = StringIO(ret)
|
|
return ret
|
|
|
|
def pack_ext_type(self, typecode, data):
|
|
if not isinstance(typecode, int):
|
|
raise TypeError("typecode must have int type.")
|
|
if not 0 <= typecode <= 127:
|
|
raise ValueError("typecode should be 0-127")
|
|
if not isinstance(data, bytes):
|
|
raise TypeError("data must have bytes type")
|
|
L = len(data)
|
|
if L > 0xffffffff:
|
|
raise ValueError("Too large data")
|
|
if L == 1:
|
|
self._buffer.write(b'\xd4')
|
|
elif L == 2:
|
|
self._buffer.write(b'\xd5')
|
|
elif L == 4:
|
|
self._buffer.write(b'\xd6')
|
|
elif L == 8:
|
|
self._buffer.write(b'\xd7')
|
|
elif L == 16:
|
|
self._buffer.write(b'\xd8')
|
|
elif L <= 0xff:
|
|
self._buffer.write(b'\xc7' + struct.pack('B', L))
|
|
elif L <= 0xffff:
|
|
self._buffer.write(b'\xc8' + struct.pack('>H', L))
|
|
else:
|
|
self._buffer.write(b'\xc9' + struct.pack('>I', L))
|
|
self._buffer.write(struct.pack('B', typecode))
|
|
self._buffer.write(data)
|
|
|
|
def _fb_pack_array_header(self, n):
|
|
if n <= 0x0f:
|
|
return self._buffer.write(struct.pack('B', 0x90 + n))
|
|
if n <= 0xffff:
|
|
return self._buffer.write(struct.pack(">BH", 0xdc, n))
|
|
if n <= 0xffffffff:
|
|
return self._buffer.write(struct.pack(">BI", 0xdd, n))
|
|
raise PackValueError("Array is too large")
|
|
|
|
def _fb_pack_map_header(self, n):
|
|
if n <= 0x0f:
|
|
return self._buffer.write(struct.pack('B', 0x80 + n))
|
|
if n <= 0xffff:
|
|
return self._buffer.write(struct.pack(">BH", 0xde, n))
|
|
if n <= 0xffffffff:
|
|
return self._buffer.write(struct.pack(">BI", 0xdf, n))
|
|
raise PackValueError("Dict is too large")
|
|
|
|
def _fb_pack_map_pairs(self, n, pairs, nest_limit=DEFAULT_RECURSE_LIMIT):
|
|
self._fb_pack_map_header(n)
|
|
for (k, v) in pairs:
|
|
self._pack(k, nest_limit - 1)
|
|
self._pack(v, nest_limit - 1)
|
|
|
|
def bytes(self):
|
|
return self._buffer.getvalue()
|
|
|
|
def reset(self):
|
|
self._buffer = StringIO()
|