def test_encode_utf8_1():
"""
Tests encoding of some special cases:
1 - byte 00 must be encoded as 'c080'
2 - supplementary characters (represented by the two surrogate code units of their UTF-16 representation):
each surrogate must be encoded by three bytes. This means supplementary characters are represented by six bytes
then U+10400 (represented as \uD801\uDC00) will be encoded as 'eda081edb080'
"""
# string containing byte 00
str1 = u"1\x002"
bb = encode_modified_utf8(str1)
assert "31c08032" == binascii.hexlify(bb), binascii.hexlify(bb)
# Unicode supplementary character U+10400
str1 = u"\uD801\uDC00"
bb = encode_modified_utf8(str1)
assert "eda081edb080" == binascii.hexlify(bb), binascii.hexlify(bb)
def test_encode_utf8_1():
"""
Tests encoding of some special cases:
1 - byte 00 must be encoded as 'c080'
2 - supplementary characters (represented by the two surrogate code
units of their UTF-16 representation): each surrogate must be encoded
by three bytes. This means supplementary characters are represented by
six bytes then U+10400 (represented as \uD801\uDC00) will be encoded as
'eda081edb080'
"""
pairs = ((u'1\x002', b'\x31\xc0\x80\x32'), (u'\uD801\uDC00',
b'\xed\xa0\x81\xed\xb0\x80'))
for original, encoded in pairs:
assert encode_modified_utf8(original) == encoded
def test_encode_utf8_1():
"""
Tests encoding of some special cases:
1 - byte 00 must be encoded as 'c080'
2 - supplementary characters (represented by the two surrogate code
units of their UTF-16 representation): each surrogate must be encoded
by three bytes. This means supplementary characters are represented by
six bytes then U+10400 (represented as \uD801\uDC00) will be encoded as
'eda081edb080'
"""
pairs = (
(u'1\x002', b'\x31\xc0\x80\x32'),
(u'\uD801\uDC00', b'\xed\xa0\x81\xed\xb0\x80')
)
for original, encoded in pairs:
assert encode_modified_utf8(original) == encoded
def pack(self):
encoded_value = encode_modified_utf8(self.value)
return pack('>BH', self.TAG, len(encoded_value)) + encoded_value
def _to_io(self, fout):
write = fout.write
write(pack('>H', self.raw_count))
for constant in self:
if isinstance(constant, ConstantUTF8):
encoded_value = encode_modified_utf8(constant.value)
length = len(encoded_value)
write(pack(
'>BH',
constant.TAG,
length
))
write(encoded_value)
elif isinstance(constant, ConstantInteger):
write(pack(
'>Bi',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantFloat):
write(pack(
'>Bf',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantLong):
write(pack(
'>Bq',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantDouble):
write(pack(
'>Bd',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantClass):
write(pack(
'>BH',
constant.TAG,
constant._name_index
))
elif isinstance(constant, ConstantString):
write(pack(
'>BH',
constant.TAG,
constant._string_index
))
elif isinstance(constant, ConstantRef):
write(pack(
'>BHH',
constant.TAG,
constant._class_index,
constant._name_and_type_index
))
elif isinstance(constant, ConstantNameAndType):
write(pack(
'>BHH',
constant.TAG,
constant._name_index,
constant._descriptor_index
))
elif isinstance(constant, ConstantMethodHandle):
write(pack(
'>BBH',
constant.TAG,
constant._reference_kind,
constant._reference_index
))
elif isinstance(constant, ConstantMethodType):
write(pack(
'>BH',
constant.TAG,
constant._descriptor_index
))
elif isinstance(constant, ConstantInvokeDynamic):
write(pack(
'>BHH',
constant.TAG,
constant._bootstrap_method_attr_index,
constant._name_and_type_index
))
def pack(self, fout):
"""
Write the ConstantPool to the file-like object `fout`.
.. note::
Advanced usage only. You will typically never need to call this
method as it will be calle=d for you when saving a ClassFile.
:param fout: Any file-like object providing `write()`
"""
write = fout.write
write(pack('>H', self.raw_count))
for constant in self:
if isinstance(constant, ConstantUTF8):
encoded_value = encode_modified_utf8(constant.value)
length = len(encoded_value)
write(pack(
'>BH',
constant.TAG,
length
))
write(encoded_value)
elif isinstance(constant, ConstantInteger):
write(pack(
'>Bi',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantFloat):
write(pack(
'>Bf',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantLong):
write(pack(
'>Bq',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantDouble):
write(pack(
'>Bd',
constant.TAG,
constant.value
))
elif isinstance(constant, ConstantClass):
write(pack(
'>BH',
constant.TAG,
constant._name_index
))
elif isinstance(constant, ConstantString):
write(pack(
'>BH',
constant.TAG,
constant._string_index
))
elif isinstance(constant, ConstantRef):
write(pack(
'>BHH',
constant.TAG,
constant._class_index,
constant._name_and_type_index
))
elif isinstance(constant, ConstantNameAndType):
write(pack(
'>BHH',
constant.TAG,
constant._name_index,
constant._descriptor_index
))
