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('-w', '--wait-until', dest='wait_until', metavar='TIME',
  26             help='Wait until specified time (Y-M-D h:m:s)'),
  27     )
  28     help = 'Imports books from the specified directories.'
  29     args = 'directory [directory ...]'
  30
  31     def handle(self, *directories, **options):
  32         from django.db import transaction
  33
  34         self.style = color_style()
  35
  36         verbose = options.get('verbose')
  37         force = options.get('force')
  38         show_traceback = options.get('traceback', False)
  39
  40         if options.get('wait_until'):
  41             wait_until = time.mktime(time.strptime(options.get('wait_until'), '%Y-%m-%d %H:%M:%S'))
  42             if verbose > 0:
  43                 print "Will wait until %s; it's %f seconds from now" % (
  44                     time.strftime('%Y-%m-%d %H:%M:%S',
  45                     time.localtime(wait_until)), wait_until - time.time())
  46
  47         # Start transaction management.
  48         transaction.commit_unless_managed()
  49         transaction.enter_transaction_management()
  50         transaction.managed(True)
  51
  52         files_imported = 0
  53         files_skipped = 0
  54
  55         for dir_name in directories:
  56             if not os.path.isdir(dir_name):
  57                 print self.style.ERROR("%s: Not a directory. Skipping." % dir_name)
  58             else:
  59                 # files queue
  60                 files = sorted(os.listdir(dir_name))
  61                 postponed = {}
  62                 while files:
  63                     file_name = files.pop(0)
  64                     file_path = os.path.join(dir_name, file_name)
  65                     file_base, ext = os.path.splitext(file_path)
  66
  67                     # Skip files that are not XML files
  68                     if not ext == '.xml':
  69                         continue
  70
  71                     if verbose > 0:
  72                         print "Parsing '%s'" % file_path
  73                     else:
  74                         sys.stdout.write('.')
  75                         sys.stdout.flush()
  76
  77                     # Import book files
  78                     try:
  79                         book = Book.from_xml_file(file_path, overwrite=force, build_epub=options.get('build_epub'))
  80                         files_imported += 1
  81
  82                         if os.path.isfile(file_base + '.pdf'):
  83                             book.pdf_file.save('%s.pdf' % book.slug, File(file(file_base + '.pdf')))
  84                             if verbose:
  85                                 print "Importing %s.pdf" % file_base
  86                         if os.path.isfile(file_base + '.epub'):
  87                             book.epub_file.save('%s.epub' % book.slug, File(file(file_base + '.epub')))
  88                             if verbose:
  89                                 print "Importing %s.epub" % file_base
  90                         if os.path.isfile(file_base + '.odt'):
  91                             book.odt_file.save('%s.odt' % book.slug, File(file(file_base + '.odt')))
  92                             if verbose:
  93                                 print "Importing %s.odt" % file_base
  94                         if os.path.isfile(file_base + '.txt'):
  95                             book.txt_file.save('%s.txt' % book.slug, File(file(file_base + '.txt')))
  96                             if verbose:
  97                                 print "Importing %s.txt" % file_base
  98                         if os.path.isfile(os.path.join(dir_name, book.slug + '.mp3')):
  99                             book.mp3_file.save('%s.mp3' % book.slug, File(file(os.path.join(dir_name, book.slug + '.mp3'))))
 100                             if verbose:
 101                                 print "Importing %s.mp3" % book.slug
 102                         if os.path.isfile(os.path.join(dir_name, book.slug + '.ogg')):
 103                             book.ogg_file.save('%s.ogg' % book.slug, File(file(os.path.join(dir_name, book.slug + '.ogg'))))
 104                             if verbose:
 105                                 print "Importing %s.ogg" % book.slug
 106                         if os.path.isfile(os.path.join(dir_name, book.slug + '.daisy.zip')):
 107                             book.ogg_file.save('%s.daisy.zip' % book.slug, File(file(os.path.join(dir_name, book.slug + '.daisy.zip'))))
 108                             if verbose:
 109                                 print "Importing %s.daisy.zip" % book.slug
 110
 111                         book.save()
 112
 113                     except Book.AlreadyExists, msg:
 114                         print self.style.ERROR('%s: Book already imported. Skipping. To overwrite use --force.' %
 115                             file_path)
 116                         files_skipped += 1
 117
 118                     except Book.DoesNotExist, e:
 119                         if file_name not in postponed or postponed[file_name] < files_imported:
 120                             # push it back into the queue, maybe the missing child will show up
 121                             if verbose:
 122                                 print self.style.NOTICE('Waiting for missing children')
 123                             files.append(file_name)
 124                             postponed[file_name] = files_imported
 125                         else:
 126                             # we're in a loop, nothing's being imported - some child is really missing
 127                             raise e
 128
 129         # Print results
 130         print
 131         print "Results: %d files imported, %d skipped, %d total." % (
 132             files_imported, files_skipped, files_imported + files_skipped)
 133         print
 134
 135         if wait_until:
 136             print 'Waiting...'
 137             try:
 138                 time.sleep(wait_until - time.time())
 139             except IOError:
 140                 print "it's already too late"
 141
 142         transaction.commit()
 143         transaction.leave_transaction_management()
 144