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, 2007 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 3 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, see <http://www.gnu.org/licenses/>. |
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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 PNM (ascii) documents.""" |
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24 | |
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25 | import pdlparser |
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26 | |
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27 | class Parser(pdlparser.PDLParser) : |
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28 | """A parser for PNM (ascii) documents.""" |
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29 | openmode = "rU" |
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30 | def isValid(self) : |
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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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33 | self.logdebug("DEBUG: Input file seems to be in the PNM (ascii) format.") |
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34 | self.marker = self.firstblock[:2] |
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35 | return True |
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36 | else : |
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37 | return False |
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38 | |
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39 | def getJobSize(self) : |
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40 | """Counts pages in a PNM (ascii) document.""" |
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41 | pagecount = 0 |
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42 | linecount = 0 |
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43 | divby = 1 |
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44 | marker = self.marker |
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45 | for line in self.infile : |
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46 | linecount += 1 |
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47 | if (linecount == 2) and (line.find("device=pksm") != -1) : |
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48 | # Special case of cmyk map |
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49 | divby = 4 |
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50 | # Unfortunately any whitespace is valid, |
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51 | # so we do it the slow way... |
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52 | pagecount += line.split().count(marker) |
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53 | |
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54 | if not (pagecount % divby) : |
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55 | return pagecount // divby |
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56 | else : |
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57 | return pagecount |
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