95 lines
3.0 KiB
Python
95 lines
3.0 KiB
Python
# © 2018 James R. Barlow: github.com/jbarlow83
|
|
#
|
|
# This file is part of OCRmyPDF.
|
|
#
|
|
# OCRmyPDF is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# OCRmyPDF is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with OCRmyPDF. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import os
|
|
import shutil
|
|
import sys
|
|
from functools import partial
|
|
from pathlib import Path
|
|
|
|
from ocrmypdf._plugin_manager import get_plugin_manager
|
|
|
|
|
|
class PdfContext:
|
|
"""Holds our context for a particular run of the pipeline"""
|
|
|
|
def __init__(
|
|
self, options, work_folder: Path, origin: Path, pdfinfo, plugin_manager
|
|
):
|
|
self.options = options
|
|
self.work_folder = Path(work_folder)
|
|
self.origin = Path(origin)
|
|
self.pdfinfo = pdfinfo
|
|
self.plugin_manager = plugin_manager
|
|
if options:
|
|
self.name = os.path.basename(options.input_file)
|
|
else:
|
|
self.name = 'origin.pdf'
|
|
if self.name == '-':
|
|
self.name = 'stdin'
|
|
|
|
def get_path(self, name: str) -> Path:
|
|
return self.work_folder / name
|
|
|
|
def get_page_contexts(self):
|
|
npages = len(self.pdfinfo)
|
|
for n in range(npages):
|
|
yield PageContext(self, n)
|
|
|
|
|
|
class PageContext:
|
|
"""Holds our context for a page
|
|
|
|
Must be pickable, so only store intrinsic/simple data elements
|
|
"""
|
|
|
|
def __init__(self, pdf_context: PdfContext, pageno):
|
|
self.work_folder = pdf_context.work_folder
|
|
self.origin = pdf_context.origin
|
|
self.options = pdf_context.options
|
|
self.name = pdf_context.name
|
|
self.pageno = pageno
|
|
self.pageinfo = pdf_context.pdfinfo[pageno]
|
|
self.plugin_manager = pdf_context.plugin_manager
|
|
|
|
def get_path(self, name: str) -> Path:
|
|
return self.work_folder / ("%06d_%s" % (self.pageno + 1, name))
|
|
|
|
def __getstate__(self):
|
|
state = self.__dict__.copy()
|
|
if state['plugin_manager'] is not None:
|
|
del state['plugin_manager']
|
|
state['construct_plugin_manager'] = partial(
|
|
get_plugin_manager, self.options.plugins
|
|
)
|
|
return state
|
|
|
|
def __setstate__(self, state):
|
|
self.__dict__.update(state)
|
|
if 'construct_plugin_manager' in state:
|
|
self.plugin_manager = state['construct_plugin_manager']()
|
|
else:
|
|
self.plugin_manager = None
|
|
del self.__dict__['construct_plugin_manager']
|
|
|
|
|
|
def cleanup_working_files(work_folder, options):
|
|
if options.keep_temporary_files:
|
|
print(f"Temporary working files retained at:\n{work_folder}", file=sys.stderr)
|
|
else:
|
|
shutil.rmtree(work_folder, ignore_errors=True)
|