def to_string(self):
# Encode the lengths as 0-255 values
ml = 0 if self._minlength is None else length_to_byte(self._minlength)
xl = length_to_byte(self._maxlength)
# Convert None values to the out-of-band NO_ID constant so they can be
# stored as unsigned ints
mid = NO_ID if self._minid is None else self._minid
xid = NO_ID if self._maxid is None else self._maxid
# Pack the term info into bytes
st = self.struct.pack(self._weight, self._df, ml, xl, self._maxweight,
0, mid, xid)
if isinstance(self.postings, tuple):
# Postings are inlined - dump them using the pickle protocol
isinlined = 1
st += dumps(self.postings, -1)[2:-1]
else:
# Append postings pointer as long to end of term info bytes
isinlined = 0
# It's possible for a term info to not have a pointer to postings
# on disk, in which case postings will be None. Convert a None
# value to -1 so it can be stored as a long.
p = -1 if self.postings is None else self.postings
st += pack_long(p)
# Prepend byte indicating whether the postings are inlined to the term
# info bytes
return pack("B", isinlined) + st
def to_bytes(self):
isinlined = self.is_inlined()
# Encode the lengths as 0-255 values
minlength = (
0 if self._minlength is None else length_to_byte(self._minlength)
)
maxlength = length_to_byte(self._maxlength)
# Convert None values to the out-of-band NO_ID constant so they can be
# stored as unsigned ints
minid = 0xFFFFFFFF if self._minid is None else self._minid
maxid = 0xFFFFFFFF if self._maxid is None else self._maxid
# Pack the term info into bytes
st = self._struct.pack(
isinlined,
self._weight,
self._df,
minlength,
maxlength,
self._maxweight,
minid,
maxid,
)
if isinlined:
# Postings are inlined - dump them using the pickle protocol
postbytes = dumps(self._inlined, 2)
else:
postbytes = pack_long(self._offset) + pack_int(self._length)
st += postbytes
return st
def digest(self):
if self._digest is None:
d = sha1()
vtype = self.owner.vtype
for arc in self.arcs:
d.update(arc.label)
if arc.target:
d.update(pack_long(arc.target))
else:
d.update(b("z"))
if arc.value:
d.update(vtype.to_bytes(arc.value))
if arc.accept:
d.update(b("T"))
self._digest = d.digest()
return self._digest
def digest(self):
if self._digest is None:
d = sha1()
vtype = self.owner.vtype
for arc in self.arcs:
d.update(arc.label)
if arc.target:
d.update(pack_long(arc.target))
else:
d.update(b("z"))
if arc.value:
d.update(vtype.to_bytes(arc.value))
if arc.accept:
d.update(b("T"))
self._digest = d.digest()
return self._digest
def to_bytes(self):
isinlined = self.is_inlined()
# Encode the lengths as 0-255 values
minlength = (0 if self._minlength is None
else length_to_byte(self._minlength))
maxlength = length_to_byte(self._maxlength)
# Convert None values to the out-of-band NO_ID constant so they can be
# stored as unsigned ints
minid = 0xffffffff if self._minid is None else self._minid
maxid = 0xffffffff if self._maxid is None else self._maxid
# Pack the term info into bytes
st = self._struct.pack(isinlined, self._weight, self._df,
minlength, maxlength, self._maxweight,
minid, maxid)
if isinlined:
# Postings are inlined - dump them using the pickle protocol
postbytes = dumps(self._inlined, -1)
else:
postbytes = pack_long(self._offset) + pack_int(self._length)
st += postbytes
return st
def valuecoder(self, offset):
return pack_long(offset)
def write_long(self, n):
self.file.write(pack_long(n))
def valuecoder(self, offset):
return pack_long(offset)
def write_long(self, n):
self.file.write(pack_long(n))
