[412] | 1 | #! /usr/bin/env python |
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| 2 | # -*- coding: ISO-8859-15 -*- |
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| 3 | # |
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| 4 | # pkpgcounter : a generic Page Description Language parser |
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| 5 | # |
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| 6 | # (c) 2003, 2004, 2005, 2006 Jerome Alet <alet@librelogiciel.com> |
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| 7 | # This program is free software; you can redistribute it and/or modify |
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| 8 | # it under the terms of the GNU General Public License as published by |
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| 9 | # the Free Software Foundation; either version 2 of the License, or |
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| 10 | # (at your option) any later version. |
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| 11 | # |
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| 12 | # This program is distributed in the hope that it will be useful, |
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | # GNU General Public License for more details. |
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| 16 | # |
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| 17 | # You should have received a copy of the GNU General Public License |
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| 18 | # along with this program; if not, write to the Free Software |
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| 19 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 20 | # |
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| 21 | # $Id$ |
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| 22 | # |
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| 23 | |
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| 24 | """This modules implements a page counter for plain text documents.""" |
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| 25 | |
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| 26 | import sys |
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| 27 | import os |
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| 28 | |
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| 29 | import pdlparser |
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| 30 | import version |
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| 31 | |
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| 32 | |
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| 33 | class Parser(pdlparser.PDLParser) : |
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| 34 | """A parser for plain text documents.""" |
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[428] | 35 | totiffcommands = [ 'enscript --quiet --portrait --no-header --columns 1 --output - | gs -sDEVICE=tiff24nc -dPARANOIDSAFER -dNOPAUSE -dBATCH -dQUIET -r%(dpi)i -sOutputFile="%(fname)s" -', |
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| 36 | 'a2ps --borders 0 --quiet --portrait --no-header --columns 1 --output - | gs -sDEVICE=tiff24nc -dPARANOIDSAFER -dNOPAUSE -dBATCH -dQUIET -r%(dpi)i -sOutputFile="%(fname)s" -', |
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| 37 | ] |
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[412] | 38 | def isValid(self) : |
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[414] | 39 | """Returns True if data is plain text, else False. |
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| 40 | |
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| 41 | It's hard to detect a plain text file, so we just |
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| 42 | read the first line, and if it doesn't end in CR or LF |
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| 43 | we consider it's not plain text. |
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| 44 | """ |
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| 45 | line = self.infile.readline() |
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| 46 | self.infile.seek(0) |
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| 47 | if line.endswith("\n") or line.endswith("\r") : |
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| 48 | self.logdebug("DEBUG: Input file seems to be in the plain text format.") |
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| 49 | return True |
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| 50 | else : |
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| 51 | return False |
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[412] | 52 | |
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| 53 | def getJobSize(self) : |
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| 54 | """Counts pages in a plain text document.""" |
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| 55 | pagesize = 66 # TODO : Does this vary wrt the default page size ? |
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| 56 | # TODO : /etc/papersize and /etc/paper.config |
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| 57 | pagecount = 0 |
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| 58 | linecount = 0 |
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| 59 | for line in self.infile : |
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[414] | 60 | if line.endswith("\n") or line.endswith("\r") : |
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| 61 | linecount += 1 |
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[422] | 62 | if (linecount > pagesize) : |
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[414] | 63 | pagecount += 1 |
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| 64 | linecount = 0 |
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[422] | 65 | else : |
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| 66 | cnt = line.count("\f") |
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| 67 | if cnt : |
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| 68 | pagecount += cnt |
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| 69 | linecount = 0 |
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[414] | 70 | else : |
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| 71 | raise pdlparser.PDLParserError, "Unsupported file format. Please send the file to %s" % version.__authoremail__ |
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| 72 | return pagecount + 1 # NB : empty files are catched in isValid() |
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[412] | 73 | |
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| 74 | if __name__ == "__main__" : |
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[414] | 75 | pdlparser.test(Parser) |
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