Generate tags for picture themes
[wolnelektury.git] / 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 from picture.models import Picture
16
17
18 class Command(BaseCommand):
19     option_list = BaseCommand.option_list + (
20         make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
21             help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'),
22         make_option('-f', '--force', action='store_true', dest='force', default=False,
23             help='Print status messages to stdout'),
24         make_option('-E', '--no-build-epub', action='store_false', dest='build_epub', default=True,
25             help='Don\'t build EPUB file'),
26         make_option('-M', '--no-build-mobi', action='store_false', dest='build_mobi', default=True,
27             help='Don\'t build MOBI file'),
28         make_option('-T', '--no-build-txt', action='store_false', dest='build_txt', default=True,
29             help='Don\'t build TXT file'),
30         make_option('-P', '--no-build-pdf', action='store_false', dest='build_pdf', default=True,
31             help='Don\'t build PDF file'),
32         make_option('-w', '--wait-until', dest='wait_until', metavar='TIME',
33             help='Wait until specified time (Y-M-D h:m:s)'),
34         make_option('-p', '--picture', action='store_true', dest='import_picture', default=False,
35             help='Import pictures'),
36         
37     )
38     help = 'Imports books from the specified directories.'
39     args = 'directory [directory ...]'
40
41     def import_book(self, file_path, options):
42         verbose = options.get('verbose')
43         file_base, ext = os.path.splitext(file_path)
44         book = Book.from_xml_file(file_path, overwrite=options.get('force'),
45                                   build_epub=options.get('build_epub'),
46                                   build_txt=options.get('build_txt'),
47                                   build_pdf=options.get('build_pdf'),
48                                   build_mobi=options.get('build_mobi'))
49         fileid = book.fileid()
50         for ebook_format in Book.ebook_formats:
51             if os.path.isfile(file_base + '.' + ebook_format):
52                 getattr(book, '%s_file' % ebook_format).save(
53                     '%s.%s' % (fileid, ebook_format), 
54                     File(file(file_base + '.' + ebook_format)))
55                 if verbose:
56                     print "Importing %s.%s" % (file_base, ebook_format)
57
58         book.save()
59
60     def import_picture(self, file_path, options):
61         picture = Picture.from_xml_file(file_path, overwrite=options.get('force'))
62         return picture
63
64     def handle(self, *directories, **options):
65         from django.db import transaction
66
67         self.style = color_style()
68
69         verbose = options.get('verbose')
70         force = options.get('force')
71         show_traceback = options.get('traceback', False)
72         import_picture = options.get('import_picture')
73
74         wait_until = None
75         if options.get('wait_until'):
76             wait_until = time.mktime(time.strptime(options.get('wait_until'), '%Y-%m-%d %H:%M:%S'))
77             if verbose > 0:
78                 print "Will wait until %s; it's %f seconds from now" % (
79                     time.strftime('%Y-%m-%d %H:%M:%S',
80                     time.localtime(wait_until)), wait_until - time.time())
81
82         # Start transaction management.
83         transaction.commit_unless_managed()
84         transaction.enter_transaction_management()
85         transaction.managed(True)
86
87         files_imported = 0
88         files_skipped = 0
89
90         for dir_name in directories:
91             if not os.path.isdir(dir_name):
92                 print self.style.ERROR("%s: Not a directory. Skipping." % dir_name)
93             else:
94                 # files queue
95                 files = sorted(os.listdir(dir_name))
96                 postponed = {}
97                 while files:
98                     file_name = files.pop(0)
99                     file_path = os.path.join(dir_name, file_name)
100                     file_base, ext = os.path.splitext(file_path)
101
102                     # Skip files that are not XML files
103                     if not ext == '.xml':
104                         continue
105
106                     if verbose > 0:
107                         print "Parsing '%s'" % file_path
108                     else:
109                         sys.stdout.write('.')
110                         sys.stdout.flush()
111
112                     # Import book files
113                     try:
114                         if import_picture:
115                             self.import_picture(file_path, options)
116                         else:
117                             self.import_book(file_path, options)
118                         files_imported += 1
119
120                     except (Book.AlreadyExists, Picture.AlreadyExists):
121                         print self.style.ERROR('%s: Book or Picture already imported. Skipping. To overwrite use --force.' %
122                             file_path)
123                         files_skipped += 1
124
125                     except Book.DoesNotExist, e:
126                         if file_name not in postponed or postponed[file_name] < files_imported:
127                             # push it back into the queue, maybe the missing child will show up
128                             if verbose:
129                                 print self.style.NOTICE('Waiting for missing children')
130                             files.append(file_name)
131                             postponed[file_name] = files_imported
132                         else:
133                             # we're in a loop, nothing's being imported - some child is really missing
134                             raise e
135
136         # Print results
137         print
138         print "Results: %d files imported, %d skipped, %d total." % (
139             files_imported, files_skipped, files_imported + files_skipped)
140         print
141
142         if wait_until:
143             print 'Waiting...'
144             try:
145                 time.sleep(wait_until - time.time())
146             except IOError:
147                 print "it's already too late"
148
149         transaction.commit()
150         transaction.leave_transaction_management()
151