/usr/share/pyshared/pkpgpdls/cfax.py is in pkpgcounter 3.50-7.
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 | # -*- coding: ISO-8859-15 -*-
#
# pkpgcounter : a generic Page Description Language parser
#
# (c) 2003, 2004, 2005, 2006, 2007 Jerome Alet <alet@librelogiciel.com>
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
# $Id: cfax.py 374 2007-12-09 14:26:15Z jerome $
#
"""This modules implements a page counter for Structured Fax documents."""
import struct
import pdlparser
class Parser(pdlparser.PDLParser) :
"""A parser for Structured Fax documents."""
format = "Structured Fax"
def isValid(self) :
"""Returns True if data is Structured Fax, else False."""
if self.firstblock.startswith("Sfff") :
return True
else :
return False
def getJobSize(self) :
"""Counts pages in a Structured Fax document.
Algorithm by Jerome Alet.
The documentation used for this was :
http://delphi.pjh2.de/articles/graphic/sff_format.php
"""
unpack = struct.unpack
pagecount = 0
docheader = self.infile.read(20)
try :
(sffid,
version,
reserved,
userinfo,
docpagecount,
offsetfirstpage,
offsetlastpage,
offsetdocumentend) = unpack("<4sBBHHHII", docheader)
self.infile.seek(offsetfirstpage - len(docheader), 1)
while True :
headerid = self.infile.read(1)
if not headerid :
break
headerid = ord(headerid)
if 1 <= headerid <= 216 : # Normal record header
self.infile.seek(headerid, 1)
elif headerid == 255 : # Illegal line / Additional user info
additionalbyte = self.infile.read(1)
if not additionalbyte :
break
additionalbyte = ord(additionalbyte)
if 1 <= additionalbyte <= 255 :
# Skip additional user information (reserved)
self.infile.seek(additionalbyte, 1)
elif not headerid :
# Record with more than 216 MH-coded bytes
recordlen = self.infile.read(2)
if not recordlen :
break
recordlen = unpack("<H", recordlen)[0]
self.infile.seek(recordlen, 1)
elif headerid == 254 : # Page header
pageheader = self.infile.read(17)
if not pageheader :
break
headerlen = ord(pageheader[0])
if not headerlen :
break # End Of Document
(vres,
hres,
coding,
reserved,
linelen,
pagelen,
offsetpreviouspage,
offsetnextpage) = unpack("<4BHHII", pageheader[1:])
pagecount += 1
if (offsetnextpage == 1) or (vres == 255) :
break # End Of Document
self.infile.seek(offsetnextpage, 1)
except struct.error :
raise pdlparser.PDLParserError, "Invalid Structured Fax datas"
return max(docpagecount, pagecount)
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