85 lines
2.4 KiB
Python
85 lines
2.4 KiB
Python
# © 2018 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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from contextlib import suppress
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from multiprocessing.managers import SyncManager
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import sys
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import shutil
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from .pdfinfo import PdfInfo
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class JobContext:
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"""Holds our context for a particular run of the pipeline
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A multiprocessing manager effectively creates a separate process
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that keeps the master job context object. Other threads access
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job context via multiprocessing proxy objects.
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While this would naturally lend itself @property's it seems to make
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a little more sense to use functions to make it explicitly that the
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invocation requires marshalling data across a process boundary.
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"""
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def __init__(self):
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self.pdfinfo = None
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self.options = None
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self.work_folder = None
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self.rotations = {}
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def generate_pdfinfo(self, infile):
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self.pdfinfo = PdfInfo(infile)
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def get_pdfinfo(self):
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"What we know about the input PDF"
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return self.pdfinfo
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def set_pdfinfo(self, pdfinfo):
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self.pdfinfo = pdfinfo
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def get_options(self):
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return self.options
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def set_options(self, options):
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self.options = options
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def get_work_folder(self):
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return self.work_folder
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def set_work_folder(self, work_folder):
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self.work_folder = work_folder
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def get_rotation(self, pageno):
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return self.rotations.get(pageno, 0)
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def set_rotation(self, pageno, value):
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self.rotations[pageno] = value
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class JobContextManager(SyncManager):
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pass
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def cleanup_working_files(work_folder, options):
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if options.keep_temporary_files:
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print("Temporary working files saved at:\n{0}".format(work_folder),
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file=sys.stderr)
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else:
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with suppress(FileNotFoundError):
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shutil.rmtree(work_folder)
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