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 image formats supported by the Python Imaging Library.""" |
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24 | |
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25 | import pdlparser |
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26 | |
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27 | try : |
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28 | from PIL import Image |
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29 | except ImportError : |
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30 | sys.stderr.write("ERROR: You MUST install the Python Imaging Library (python-imaging) for pkpgcounter to work.\n") |
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31 | raise pdlparser.PDLParserError, "The Python Imaging Library is missing." |
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32 | |
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33 | import version |
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34 | |
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35 | class Parser(pdlparser.PDLParser) : |
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36 | """A parser for plain text documents.""" |
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37 | totiffcommands = [ 'convert "%(infname)s" "%(outfname)s"' ] |
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38 | required = [ "convert" ] |
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39 | def isValid(self) : |
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40 | """Returns True if data is an image format supported by PIL, else False.""" |
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41 | try : |
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42 | image = Image.open(self.filename) |
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43 | except (IOError, OverflowError) : |
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44 | return False |
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45 | else : |
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46 | self.logdebug("DEBUG: Input file seems to be an image in the %s (%s) format." % (image.format, image.format_description)) |
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47 | return True |
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48 | |
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49 | def getJobSize(self) : |
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50 | """Counts pages in an image file.""" |
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51 | index = 0 |
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52 | image = Image.open(self.filename) |
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53 | try : |
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54 | while True : |
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55 | index += 1 |
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56 | image.seek(index) |
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57 | except EOFError : |
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58 | pass |
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59 | return index |
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