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py3: Fix decoding of CFF font tables

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Kovid Goyal 2020-01-08 08:23:36 +05:30
parent 09aae8b299
commit 7474547bd2
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1 changed files with 4 additions and 7 deletions
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src/calibre/utils/fonts/sfnt/cff/dict_data.py
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@ -6,7 +6,7 @@
__copyright__ = '2012, Kovid Goyal <kovid at kovidgoyal.net>'
__docformat__ = 'restructuredtext en'
from struct import unpack, pack
from struct import pack, unpack_from
from polyglot.builtins import range, unicode_type
t1_operand_encoding = [None] * 256
@ -44,18 +44,15 @@ def read_small_int2(self, b0, data, index):
return -(b0-251)*256 - b1 - 108, index+1
def read_short_int(self, b0, data, index):
bin = data[index] + data[index+1]
value, = unpack(b">h", bin)
value, = unpack_from(b">h", data, index)
return value, index+2
def read_long_int(self, b0, data, index):
bin = data[index] + data[index+1] + data[index+2] + data[index+3]
value, = unpack(b">l", bin)
value, = unpack_from(b">l", data, index)
return value, index+4
def read_fixed_1616(self, b0, data, index):
bin = data[index] + data[index+1] + data[index+2] + data[index+3]
value, = unpack(b">l", bin)
value, = unpack_from(b">l", data, index)
return value / 65536.0, index+4
def read_real_number(self, b0, data, index):