/usr/share/pyshared/pyx/dvi/mapfile.py is in python-pyx 0.12.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
#
# Copyright (C) 2007-2011 Jörg Lehmann <joergl@users.sourceforge.net>
# Copyright (C) 2007-2011 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
import os.path, re, warnings
from pyx import font, filelocator
from pyx.font import t1file, afmfile, pfmfile
from pyx.dvi import encfile
class UnsupportedFontFormat(Exception):
pass
class UnsupportedPSFragment(Exception):
pass
class ParseError(Exception):
pass
_marker = object()
class MAPline:
tokenpattern = re.compile(r'"(.*?)("\s+|"$|$)|(.*?)(\s+|$)')
def __init__(self, s):
""" construct font mapping from line s of font mapping file """
self.texname = self.basepsname = self.fontfilename = None
# standard encoding
self.encodingfilename = None
# supported postscript fragments occuring in psfonts.map
# XXX extendfont not yet implemented
self.reencodefont = self.extendfont = self.slant = None
# cache for openend font and encoding
self._font = None
self._encoding = _marker
tokens = []
while len(s):
match = self.tokenpattern.match(s)
if match:
if match.groups()[0] is not None:
tokens.append('"%s"' % match.groups()[0])
else:
tokens.append(match.groups()[2])
s = s[match.end():]
else:
raise ParseError("Cannot tokenize string '%s'" % s)
next_token_is_encfile = False
for token in tokens:
if next_token_is_encfile:
self.encodingfilename = token
next_token_is_encfile = False
elif token.startswith("<"):
if token == "<":
next_token_is_encfile = True
elif token.startswith("<<"):
# XXX: support non-partial download here
self.fontfilename = token[2:]
elif token.startswith("<["):
self.encodingfilename = token[2:]
elif token.endswith(".pfa") or token.endswith(".pfb"):
self.fontfilename = token[1:]
elif token.endswith(".enc"):
self.encodingfilename = token[1:]
elif token.endswith(".ttf"):
raise UnsupportedFontFormat("TrueType font")
elif token.endswith(".t42"):
raise UnsupportedFontFormat("Type 42 font")
else:
raise ParseError("Unknown token '%s'" % token)
elif token.startswith('"'):
pscode = token[1:-1].split()
# parse standard postscript code fragments
while pscode:
try:
arg, cmd = pscode[:2]
except:
raise UnsupportedPSFragment("Unsupported Postscript fragment '%s'" % pscode)
pscode = pscode[2:]
if cmd == "ReEncodeFont":
self.reencodefont = arg
elif cmd == "ExtendFont":
self.extendfont = arg
elif cmd == "SlantFont":
self.slant = float(arg)
else:
raise UnsupportedPSFragment("Unsupported Postscript fragment '%s %s'" % (arg, cmd))
else:
if self.texname is None:
self.texname = token
else:
self.basepsname = token
if self.basepsname is None:
self.basepsname = self.texname
def getfontname(self):
return self.basepsname
def getfont(self):
if self._font is None:
if self.fontfilename is not None:
fontfile = filelocator.open(self.fontfilename, [filelocator.format.type1], "rb")
t1font = t1file.from_PF_bytes(fontfile.read())
fontfile.close()
assert self.basepsname == t1font.name, "corrupt MAP file"
try:
metricfile = filelocator.open(os.path.splitext(self.fontfilename)[0], [filelocator.format.afm])
except IOError:
try:
# fallback by using the pfm instead of the afm font metric
# (in all major TeX distributions there is no pfm file format defined by kpsewhich, but
# we can use the type1 format and search for the file including the expected suffix)
metricfile = filelocator.open("%s.pfm" % os.path.splitext(self.fontfilename)[0], [filelocator.format.type1])
except IOError:
self._font = font.T1font(t1font)
else:
self._font = font.T1font(t1font, pfmfile.PFMfile(metricfile, t1font))
metricfile.close()
else:
self._font = font.T1font(t1font, afmfile.AFMfile(metricfile))
metricfile.close()
else:
metricfile = filelocator.open(self.basepsname, [filelocator.format.afm])
self._font = font.T1builtinfont(self.basepsname, afmfile.AFMfile(metricfile))
metricfile.close()
return self._font
def getencoding(self):
if self._encoding is _marker:
if self.encodingfilename is not None:
encodingfile = filelocator.open(self.encodingfilename, [filelocator.format.tex_ps_header], "rb")
ef = encfile.ENCfile(encodingfile.read())
encodingfile.close()
assert ef.name == "/%s" % self.reencodefont
self._encoding = ef.vector
else:
self._encoding = None
return self._encoding
def __str__(self):
return ("'%s' is '%s' read from '%s' encoded as '%s'" %
(self.texname, self.basepsname, self.fontfile, repr(self.encodingfile)))
# generate fontmap
def readfontmap(filenames):
""" read font map from filename (without path) """
fontmap = {}
for filename in filenames:
mapfile = filelocator.open(filename, [filelocator.format.fontmap, filelocator.format.dvips_config], mode="rU")
lineno = 0
for line in mapfile.readlines():
lineno += 1
line = line.rstrip()
if not (line=="" or line[0] in (" ", "%", "*", ";" , "#")):
try:
fm = MAPline(line)
except (ParseError, UnsupportedPSFragment), e:
warnings.warn("Ignoring line %i in mapping file '%s': %s" % (lineno, filename, e))
except UnsupportedFontFormat, e:
pass
else:
fontmap[fm.texname] = fm
mapfile.close()
return fontmap
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