62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
# © 2017 James R. Barlow: github.com/jbarlow83
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#
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# This file is part of OCRmyPDF.
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#
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# OCRmyPDF is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# OCRmyPDF is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with OCRmyPDF. If not, see <http://www.gnu.org/licenses/>.
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"""Interface to qpdf executable"""
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from io import StringIO
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import pikepdf
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def version():
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return pikepdf.__libqpdf_version__
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def check(input_file, log=None):
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pdf = None
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try:
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pdf = pikepdf.open(input_file)
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except pikepdf.PdfError as e:
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if log:
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log.error(e)
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return False
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else:
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messages = pdf.check()
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for msg in messages:
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if 'error' in msg.lower():
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log.error(msg)
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else:
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log.warning(msg)
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sio = StringIO()
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linearize = None
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try:
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pdf.check_linearization(sio)
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except RuntimeError:
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pass
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else:
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linearize = sio.getvalue()
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if linearize:
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log.warning(linearize)
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if not messages and not linearize:
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return True
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return False
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finally:
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if pdf:
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pdf.close()
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