87 lines
2.7 KiB
Python
87 lines
2.7 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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import os
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import shutil
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import sys
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from pathlib import Path
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from ocrmypdf._plugin_manager import get_plugin_manager
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class PdfContext:
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"""Holds our context for a particular run of the pipeline"""
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def __init__(
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self, options, work_folder: Path, origin: Path, pdfinfo, plugin_manager
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):
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self.options = options
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self.work_folder = Path(work_folder)
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self.origin = Path(origin)
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self.pdfinfo = pdfinfo
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self.plugin_manager = plugin_manager
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if options:
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self.name = os.path.basename(options.input_file)
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else:
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self.name = 'origin.pdf'
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if self.name == '-':
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self.name = 'stdin'
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def get_path(self, name: str) -> Path:
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return self.work_folder / name
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def get_page_contexts(self):
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npages = len(self.pdfinfo)
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for n in range(npages):
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yield PageContext(self, n)
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class PageContext:
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"""Holds our context for a page
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Must be pickable, so only store intrinsic/simple data elements
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"""
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def __init__(self, pdf_context: PdfContext, pageno):
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self.work_folder = pdf_context.work_folder
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self.origin = pdf_context.origin
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self.options = pdf_context.options
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self.name = pdf_context.name
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self.pageno = pageno
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self.pageinfo = pdf_context.pdfinfo[pageno]
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self.plugin_manager = pdf_context.plugin_manager
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def get_path(self, name: str) -> Path:
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return self.work_folder / ("%06d_%s" % (self.pageno + 1, name))
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def __getstate__(self):
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state = self.__dict__.copy()
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if state['plugin_manager'] is not None:
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state['plugin_manager'] = None
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return state
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def __setstate__(self, state):
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self.__dict__.update(state)
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self.plugin_manager = get_plugin_manager(self.options.plugins)
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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(f"Temporary working files retained at:\n{work_folder}", file=sys.stderr)
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else:
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shutil.rmtree(work_folder, ignore_errors=True)
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