[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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[564] | 5 | # (c) 2003, 2004, 2005, 2006, 2007, 2008 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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[500] | 22 | """This modules implements a page counter for image formats supported by the Python Imaging Library.""" |
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[412] | 23 | |
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[527] | 24 | import pdlparser |
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[500] | 25 | |
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[527] | 26 | try : |
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| 27 | from PIL import Image |
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[3436] | 28 | except ImportError : |
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[527] | 29 | sys.stderr.write("ERROR: You MUST install the Python Imaging Library (python-imaging) for pkpgcounter to work.\n") |
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| 30 | raise pdlparser.PDLParserError, "The Python Imaging Library is missing." |
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| 31 | |
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[412] | 32 | import version |
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| 33 | |
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| 34 | class Parser(pdlparser.PDLParser) : |
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| 35 | """A parser for plain text documents.""" |
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[3436] | 36 | totiffcommands = [ 'convert "%(infname)s" "%(outfname)s"' ] |
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[527] | 37 | required = [ "convert" ] |
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[3436] | 38 | def isValid(self) : |
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| 39 | """Returns True if data is an image format supported by PIL, else False.""" |
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[500] | 40 | try : |
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[522] | 41 | image = Image.open(self.filename) |
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[3436] | 42 | except (IOError, OverflowError) : |
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[414] | 43 | return False |
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[3436] | 44 | else : |
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[555] | 45 | self.format = "%s (%s)" % (image.format, image.format_description) |
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[500] | 46 | return True |
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[3436] | 47 | |
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[412] | 48 | def getJobSize(self) : |
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[500] | 49 | """Counts pages in an image file.""" |
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| 50 | index = 0 |
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[522] | 51 | image = Image.open(self.filename) |
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[500] | 52 | try : |
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| 53 | while True : |
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[3436] | 54 | index += 1 |
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[500] | 55 | image.seek(index) |
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[3436] | 56 | except EOFError : |
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[500] | 57 | pass |
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[3436] | 58 | return index |
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