src/catalogue/management/commands/importbooks.py

   1 # This file is part of Wolne Lektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Wolne Lektury. See NOTICE for more information.
   3 #
   4 import os
   5 import sys
   6 from django.conf import settings
   7 from django.core.management.base import BaseCommand
   8 from django.core.management.color import color_style
   9 from django.core.files import File
  10 from django.db import transaction
  11 from catalogue.models import Book
  12
  13
  14 class Command(BaseCommand):
  15     help = 'Imports books from the specified directories.'
  16
  17     def add_arguments(self, parser):
  18         parser.add_argument(
  19                 '-q', '--quiet', action='store_false', dest='verbose', default=True,
  20                 help='Verbosity level; 0=minimal output, 1=normal output, 2=all output')
  21         parser.add_argument(
  22                 '-f', '--force', action='store_true', dest='force',
  23                 default=False, help='Overwrite works already in the catalogue')
  24         parser.add_argument(
  25                 '-D', '--dont-build', dest='dont_build', metavar="FORMAT,...",
  26                 help="Skip building specified formats")
  27         parser.add_argument(
  28                 '-F', '--not-findable', action='store_false',
  29                 dest='findable', default=True,
  30                 help='Set book as not findable.')
  31         parser.add_argument('directory', nargs='+')
  32
  33     def import_book(self, file_path, options):
  34         verbose = options.get('verbose')
  35         if options.get('dont_build'):
  36             dont_build = options.get('dont_build').lower().split(',')
  37         else:
  38             dont_build = None
  39         file_base, ext = os.path.splitext(file_path)
  40         book = Book.from_xml_file(file_path, overwrite=options.get('force'),
  41                                   dont_build=dont_build,
  42                                   findable=options.get('findable'),
  43                                   remote_gallery_url='file://' + os.path.dirname(os.path.abspath(file_base)) + '/img/'
  44                                   )
  45         for ebook_format in Book.ebook_formats:
  46             if os.path.isfile(file_base + '.' + ebook_format):
  47                 getattr(book, '%s_file' % ebook_format).save(
  48                     '%s.%s' % (book.slug, ebook_format),
  49                     File(file(file_base + '.' + ebook_format)),
  50                     save=False
  51                     )
  52                 if verbose:
  53                     print("Importing %s.%s" % (file_base, ebook_format))
  54         book.save()
  55
  56     @transaction.atomic
  57     def handle(self, **options):
  58         self.style = color_style()
  59
  60         verbose = options.get('verbose')
  61
  62         files_imported = 0
  63         files_skipped = 0
  64
  65         for dir_name in options['directory']:
  66             if not os.path.isdir(dir_name):
  67                 print(self.style.ERROR("%s: Not a directory. Skipping." % dir_name))
  68             else:
  69                 # files queue
  70                 files = sorted(os.listdir(dir_name))
  71                 postponed = {}
  72                 while files:
  73                     file_name = files.pop(0)
  74                     file_path = os.path.join(dir_name, file_name)
  75                     file_base, ext = os.path.splitext(file_path)
  76
  77                     # Skip files that are not XML files
  78                     if not ext == '.xml':
  79                         continue
  80
  81                     if verbose > 0:
  82                         print("Parsing '%s'" % file_path)
  83                     else:
  84                         sys.stdout.write('.')
  85                         sys.stdout.flush()
  86
  87                     # Import book files
  88                     try:
  89                         self.import_book(file_path, options)
  90                         files_imported += 1
  91
  92                     except Book.AlreadyExists:
  93                         print(self.style.ERROR(
  94                             '%s: Book already imported. Skipping. To overwrite use --force.' %
  95                             file_path))
  96                         files_skipped += 1
  97
  98                     except Book.DoesNotExist as e:
  99                         if file_name not in postponed or postponed[file_name] < files_imported:
 100                             # push it back into the queue, maybe the missing child will show up
 101                             if verbose:
 102                                 print(self.style.NOTICE('Waiting for missing children'))
 103                             files.append(file_name)
 104                             postponed[file_name] = files_imported
 105                         else:
 106                             # we're in a loop, nothing's being imported - some child is really missing
 107                             raise e
 108
 109         # Print results
 110         print()
 111         print("Results: %d files imported, %d skipped, %d total." % (
 112             files_imported, files_skipped, files_imported + files_skipped))
 113         print()