apps/catalogue/management/commands/importbooks.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 import os
   6 import sys
   7 import time
   8 from optparse import make_option
   9
  10 from django.core.management.base import BaseCommand
  11 from django.core.management.color import color_style
  12 from django.core.files import File
  13
  14 from catalogue.models import Book
  15
  16
  17 class Command(BaseCommand):
  18     option_list = BaseCommand.option_list + (
  19         make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
  20             help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'),
  21         make_option('-f', '--force', action='store_true', dest='force', default=False,
  22             help='Print status messages to stdout'),
  23         make_option('-E', '--no-build-epub', action='store_false', dest='build_epub', default=True,
  24             help='Don\'t build EPUB file'),
  25         make_option('-T', '--no-build-txt', action='store_false', dest='build_txt', default=True,
  26             help='Don\'t build TXT file'),
  27         make_option('-w', '--wait-until', dest='wait_until', metavar='TIME',
  28             help='Wait until specified time (Y-M-D h:m:s)'),
  29     )
  30     help = 'Imports books from the specified directories.'
  31     args = 'directory [directory ...]'
  32
  33     def handle(self, *directories, **options):
  34         from django.db import transaction
  35
  36         self.style = color_style()
  37
  38         verbose = options.get('verbose')
  39         force = options.get('force')
  40         show_traceback = options.get('traceback', False)
  41
  42         if options.get('wait_until'):
  43             wait_until = time.mktime(time.strptime(options.get('wait_until'), '%Y-%m-%d %H:%M:%S'))
  44             if verbose > 0:
  45                 print "Will wait until %s; it's %f seconds from now" % (
  46                     time.strftime('%Y-%m-%d %H:%M:%S',
  47                     time.localtime(wait_until)), wait_until - time.time())
  48
  49         # Start transaction management.
  50         transaction.commit_unless_managed()
  51         transaction.enter_transaction_management()
  52         transaction.managed(True)
  53
  54         files_imported = 0
  55         files_skipped = 0
  56
  57         for dir_name in directories:
  58             if not os.path.isdir(dir_name):
  59                 print self.style.ERROR("%s: Not a directory. Skipping." % dir_name)
  60             else:
  61                 # files queue
  62                 files = sorted(os.listdir(dir_name))
  63                 postponed = {}
  64                 while files:
  65                     file_name = files.pop(0)
  66                     file_path = os.path.join(dir_name, file_name)
  67                     file_base, ext = os.path.splitext(file_path)
  68
  69                     # Skip files that are not XML files
  70                     if not ext == '.xml':
  71                         continue
  72
  73                     if verbose > 0:
  74                         print "Parsing '%s'" % file_path
  75                     else:
  76                         sys.stdout.write('.')
  77                         sys.stdout.flush()
  78
  79                     # Import book files
  80                     try:
  81                         book = Book.from_xml_file(file_path, overwrite=force,
  82                                                   build_epub=options.get('build_epub'),
  83                                                   build_txt=options.get('build_txt'))
  84                         files_imported += 1
  85
  86                         if os.path.isfile(file_base + '.pdf'):
  87                             book.pdf_file.save('%s.pdf' % book.slug, File(file(file_base + '.pdf')))
  88                             if verbose:
  89                                 print "Importing %s.pdf" % file_base
  90                         if os.path.isfile(file_base + '.epub'):
  91                             book.epub_file.save('%s.epub' % book.slug, File(file(file_base + '.epub')))
  92                             if verbose:
  93                                 print "Importing %s.epub" % file_base
  94                         if os.path.isfile(file_base + '.odt'):
  95                             book.odt_file.save('%s.odt' % book.slug, File(file(file_base + '.odt')))
  96                             if verbose:
  97                                 print "Importing %s.odt" % file_base
  98                         if os.path.isfile(file_base + '.txt'):
  99                             book.txt_file.save('%s.txt' % book.slug, File(file(file_base + '.txt')))
 100                             if verbose:
 101                                 print "Importing %s.txt" % file_base
 102                         if os.path.isfile(os.path.join(dir_name, book.slug + '.mp3')):
 103                             book.mp3_file.save('%s.mp3' % book.slug, File(file(os.path.join(dir_name, book.slug + '.mp3'))))
 104                             if verbose:
 105                                 print "Importing %s.mp3" % book.slug
 106                         if os.path.isfile(os.path.join(dir_name, book.slug + '.ogg')):
 107                             book.ogg_file.save('%s.ogg' % book.slug, File(file(os.path.join(dir_name, book.slug + '.ogg'))))
 108                             if verbose:
 109                                 print "Importing %s.ogg" % book.slug
 110                         if os.path.isfile(os.path.join(dir_name, book.slug + '.daisy.zip')):
 111                             book.ogg_file.save('%s.daisy.zip' % book.slug, File(file(os.path.join(dir_name, book.slug + '.daisy.zip'))))
 112                             if verbose:
 113                                 print "Importing %s.daisy.zip" % book.slug
 114
 115                         book.save()
 116
 117                     except Book.AlreadyExists, msg:
 118                         print self.style.ERROR('%s: Book already imported. Skipping. To overwrite use --force.' %
 119                             file_path)
 120                         files_skipped += 1
 121
 122                     except Book.DoesNotExist, e:
 123                         if file_name not in postponed or postponed[file_name] < files_imported:
 124                             # push it back into the queue, maybe the missing child will show up
 125                             if verbose:
 126                                 print self.style.NOTICE('Waiting for missing children')
 127                             files.append(file_name)
 128                             postponed[file_name] = files_imported
 129                         else:
 130                             # we're in a loop, nothing's being imported - some child is really missing
 131                             raise e
 132
 133         # Print results
 134         print
 135         print "Results: %d files imported, %d skipped, %d total." % (
 136             files_imported, files_skipped, files_imported + files_skipped)
 137         print
 138
 139         if wait_until:
 140             print 'Waiting...'
 141             try:
 142                 time.sleep(wait_until - time.time())
 143             except IOError:
 144                 print "it's already too late"
 145
 146         transaction.commit()
 147         transaction.leave_transaction_management()
 148