/usr/share/pyshared/pyx/dvi/vffile.py is in python-pyx 0.11.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | # -*- encoding: utf-8 -*-
#
#
# Copyright (C) 2002-2007 Jörg Lehmann <joergl@users.sourceforge.net>
# Copyright (C) 2002-2007 André Wobst <wobsta@users.sourceforge.net>
#
# This file is part of PyX (http://pyx.sourceforge.net/).
#
# PyX is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PyX is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with PyX; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
from pyx import reader
import texfont
_VF_LONG_CHAR = 242 # character packet (long version)
_VF_FNTDEF1234 = 243 # font definition
_VF_PRE = 247 # preamble
_VF_POST = 248 # postamble
_VF_ID = 202 # VF id byte
class VFError(Exception): pass
class vffile:
def __init__(self, file, scale, tfmconv, pyxconv, debug=0):
self.scale = scale
self.tfmconv = tfmconv
self.pyxconv = pyxconv
self.debug = debug
self.fonts = {} # used fonts
self.widths = {} # widths of defined chars
self.chardefs = {} # dvi chunks for defined chars
afile = reader.stringreader(file.read())
cmd = afile.readuchar()
if cmd == _VF_PRE:
if afile.readuchar() != _VF_ID: raise VFError
comment = afile.read(afile.readuchar())
self.cs = afile.readuint32()
self.ds = afile.readuint32()
else:
raise VFError
while 1:
cmd = afile.readuchar()
if cmd >= _VF_FNTDEF1234 and cmd < _VF_FNTDEF1234 + 4:
# font definition
if cmd == _VF_FNTDEF1234:
num = afile.readuchar()
elif cmd == _VF_FNTDEF1234+1:
num = afile.readuint16()
elif cmd == _VF_FNTDEF1234+2:
num = afile.readuint24()
elif cmd == _VF_FNTDEF1234+3:
num = afile.readint32()
c = afile.readint32()
s = afile.readint32() # relative scaling used for font (fix_word)
d = afile.readint32() # design size of font
fontname = afile.read(afile.readuchar() + afile.readuchar())
# rescaled size of font: s is relative to the scaling
# of the virtual font itself. Note that realscale has
# to be a fix_word (like s)
# XXX: check rounding
reals = int(round(self.scale * (16*self.ds/16777216L) * s))
# print ("defining font %s -- VF scale: %g, VF design size: %d, relative font size: %d => real size: %d" %
# (fontname, self.scale, self.ds, s, reals)
# )
# XXX allow for virtual fonts here too
self.fonts[num] = texfont.TeXfont(fontname, c, reals, d, self.tfmconv, self.pyxconv, self.debug > 1)
elif cmd == _VF_LONG_CHAR:
# character packet (long form)
pl = afile.readuint32() # packet length
cc = afile.readuint32() # char code (assumed unsigned, but anyhow only 0 <= cc < 255 is actually used)
tfm = afile.readuint24() # character width
dvi = afile.read(pl) # dvi code of character
self.widths[cc] = tfm
self.chardefs[cc] = dvi
elif cmd < _VF_LONG_CHAR:
# character packet (short form)
cc = afile.readuchar() # char code
tfm = afile.readuint24() # character width
dvi = afile.read(cmd)
self.widths[cc] = tfm
self.chardefs[cc] = dvi
elif cmd == _VF_POST:
break
else:
raise VFError
afile.close()
def getfonts(self):
return self.fonts
def getchar(self, cc):
return self.chardefs[cc]
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