[3410] | 1 | # -*- coding: utf-8 -*- |
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[412] | 2 | # |
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| 3 | # pkpgcounter : a generic Page Description Language parser |
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| 4 | # |
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[3578] | 5 | # (c) 2003-2019 Jerome Alet <alet@librelogiciel.com> |
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[463] | 6 | # This program is free software: you can redistribute it and/or modify |
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[412] | 7 | # it under the terms of the GNU General Public License as published by |
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[463] | 8 | # the Free Software Foundation, either version 3 of the License, or |
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[412] | 9 | # (at your option) any later version. |
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[3436] | 10 | # |
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[412] | 11 | # This program is distributed in the hope that it will be useful, |
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| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | # GNU General Public License for more details. |
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[3436] | 15 | # |
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[412] | 16 | # You should have received a copy of the GNU General Public License |
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[463] | 17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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[412] | 18 | # |
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| 19 | # $Id$ |
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| 20 | # |
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| 21 | |
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[546] | 22 | """This modules implements a page counter for PNM (ascii) documents.""" |
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[412] | 23 | |
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| 24 | import pdlparser |
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| 25 | |
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| 26 | class Parser(pdlparser.PDLParser) : |
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[548] | 27 | """A parser for PNM (ascii) documents.""" |
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[3436] | 28 | openmode = "rU" |
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[555] | 29 | format = "PNM (ascii)" |
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[3436] | 30 | def isValid(self) : |
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[553] | 31 | """Returns True if data is ASCII PNM, else False.""" |
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| 32 | if self.firstblock.split()[0] in ("P1", "P2", "P3") : |
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[546] | 33 | self.marker = self.firstblock[:2] |
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[414] | 34 | return True |
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[3436] | 35 | else : |
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[414] | 36 | return False |
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[3436] | 37 | |
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[412] | 38 | def getJobSize(self) : |
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[546] | 39 | """Counts pages in a PNM (ascii) document.""" |
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[412] | 40 | pagecount = 0 |
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[551] | 41 | linecount = 0 |
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| 42 | divby = 1 |
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[546] | 43 | marker = self.marker |
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[412] | 44 | for line in self.infile : |
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[551] | 45 | linecount += 1 |
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| 46 | if (linecount == 2) and (line.find("device=pksm") != -1) : |
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| 47 | # Special case of cmyk map |
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| 48 | divby = 4 |
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[3436] | 49 | # Unfortunately any whitespace is valid, |
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[553] | 50 | # so we do it the slow way... |
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[546] | 51 | pagecount += line.split().count(marker) |
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[3436] | 52 | |
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| 53 | if not (pagecount % divby) : |
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[551] | 54 | return pagecount // divby |
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[3436] | 55 | else : |
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[551] | 56 | return pagecount |
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