[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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[443] | 6 | # (c) 2003, 2004, 2005, 2006, 2007 Jerome Alet <alet@librelogiciel.com> |
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[463] | 7 | # This program is free software: you can redistribute it and/or modify |
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[412] | 8 | # it under the terms of the GNU General Public License as published by |
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[463] | 9 | # the Free Software Foundation, either version 3 of the License, or |
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[412] | 10 | # (at your option) any later version. |
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[463] | 11 | # |
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[412] | 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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[463] | 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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[412] | 19 | # |
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| 20 | # $Id$ |
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| 21 | # |
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| 22 | |
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| 23 | """This modules implements a page counter for plain text documents.""" |
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| 24 | |
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| 25 | import pdlparser |
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| 26 | import version |
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| 27 | |
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| 28 | class Parser(pdlparser.PDLParser) : |
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| 29 | """A parser for plain text documents.""" |
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[428] | 30 | 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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| 31 | '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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| 32 | ] |
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[491] | 33 | openmode = "rU" |
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[412] | 34 | def isValid(self) : |
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[414] | 35 | """Returns True if data is plain text, else False. |
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| 36 | |
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| 37 | It's hard to detect a plain text file, so we just |
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| 38 | read the first line, and if it doesn't end in CR or LF |
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| 39 | we consider it's not plain text. |
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| 40 | """ |
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| 41 | line = self.infile.readline() |
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| 42 | self.infile.seek(0) |
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| 43 | if line.endswith("\n") or line.endswith("\r") : |
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| 44 | self.logdebug("DEBUG: Input file seems to be in the plain text format.") |
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| 45 | return True |
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| 46 | else : |
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| 47 | return False |
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[412] | 48 | |
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| 49 | def getJobSize(self) : |
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| 50 | """Counts pages in a plain text document.""" |
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| 51 | pagesize = 66 # TODO : Does this vary wrt the default page size ? |
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| 52 | # TODO : /etc/papersize and /etc/paper.config |
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| 53 | pagecount = 0 |
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| 54 | linecount = 0 |
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| 55 | for line in self.infile : |
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[491] | 56 | if line.endswith("\n") : |
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[414] | 57 | linecount += 1 |
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[422] | 58 | if (linecount > pagesize) : |
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[414] | 59 | pagecount += 1 |
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| 60 | linecount = 0 |
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[422] | 61 | else : |
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| 62 | cnt = line.count("\f") |
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| 63 | if cnt : |
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| 64 | pagecount += cnt |
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| 65 | linecount = 0 |
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[414] | 66 | else : |
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| 67 | raise pdlparser.PDLParserError, "Unsupported file format. Please send the file to %s" % version.__authoremail__ |
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| 68 | return pagecount + 1 # NB : empty files are catched in isValid() |
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