| 1 | #! /usr/bin/env python |
|---|
| 2 | # -*- coding: ISO-8859-15 -*- |
|---|
| 3 | # |
|---|
| 4 | # pkpgcounter : a generic Page Description Language parser |
|---|
| 5 | # |
|---|
| 6 | # (c) 2003, 2004, 2005, 2006, 2007 Jerome Alet <alet@librelogiciel.com> |
|---|
| 7 | # This program is free software: you can redistribute it and/or modify |
|---|
| 8 | # it under the terms of the GNU General Public License as published by |
|---|
| 9 | # the Free Software Foundation, either version 3 of the License, or |
|---|
| 10 | # (at your option) any later version. |
|---|
| 11 | # |
|---|
| 12 | # This program is distributed in the hope that it will be useful, |
|---|
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 15 | # GNU General Public License for more details. |
|---|
| 16 | # |
|---|
| 17 | # You should have received a copy of the GNU General Public License |
|---|
| 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
|---|
| 19 | # |
|---|
| 20 | # $Id$ |
|---|
| 21 | # |
|---|
| 22 | |
|---|
| 23 | """This modules implements a page counter for PNM (ascii) documents.""" |
|---|
| 24 | |
|---|
| 25 | import pdlparser |
|---|
| 26 | |
|---|
| 27 | class Parser(pdlparser.PDLParser) : |
|---|
| 28 | """A parser for PNM (ascii) documents.""" |
|---|
| 29 | openmode = "rU" |
|---|
| 30 | format = "PNM (ascii)" |
|---|
| 31 | def isValid(self) : |
|---|
| 32 | """Returns True if data is ASCII PNM, else False.""" |
|---|
| 33 | if self.firstblock.split()[0] in ("P1", "P2", "P3") : |
|---|
| 34 | self.marker = self.firstblock[:2] |
|---|
| 35 | return True |
|---|
| 36 | else : |
|---|
| 37 | return False |
|---|
| 38 | |
|---|
| 39 | def getJobSize(self) : |
|---|
| 40 | """Counts pages in a PNM (ascii) document.""" |
|---|
| 41 | pagecount = 0 |
|---|
| 42 | linecount = 0 |
|---|
| 43 | divby = 1 |
|---|
| 44 | marker = self.marker |
|---|
| 45 | for line in self.infile : |
|---|
| 46 | linecount += 1 |
|---|
| 47 | if (linecount == 2) and (line.find("device=pksm") != -1) : |
|---|
| 48 | # Special case of cmyk map |
|---|
| 49 | divby = 4 |
|---|
| 50 | # Unfortunately any whitespace is valid, |
|---|
| 51 | # so we do it the slow way... |
|---|
| 52 | pagecount += line.split().count(marker) |
|---|
| 53 | |
|---|
| 54 | if not (pagecount % divby) : |
|---|
| 55 | return pagecount // divby |
|---|
| 56 | else : |
|---|
| 57 | return pagecount |
|---|
