2 # -*- coding: utf-8 -*-
4 # This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
5 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
10 from librarian import DirDocProvider, ParseError
11 from librarian.parser import WLDocument
12 from librarian.cover import make_cover
16 """Option for optparse. Use it like `optparse.OptionParser.add_option`."""
17 def __init__(self, *names, **options):
19 self.options = options
21 def add(self, parser):
22 parser.add_option(*self.names, **self.options)
25 return self.options['dest']
27 def value(self, options):
28 return getattr(options, self.name())
31 class Book2Anything(object):
32 """A class for creating book2... scripts.
34 Subclass it for any format you want to convert to.
36 format_name = None # Set format name, like "PDF".
37 ext = None # Set file extension, like "pdf".
38 uses_cover = False # Can it add a cover?
39 cover_optional = True # Only relevant if uses_cover
40 uses_provider = False # Does it need a DocProvider?
41 transform = None # Transform method. Uses WLDocument.as_{ext} by default.
42 parser_options = [] # List of Option objects for additional parser args.
43 transform_options = [] # List of Option objects for additional transform args.
44 transform_flags = [] # List of Option objects for supported transform flags.
48 # Parse commandline arguments
49 usage = """Usage: %%prog [options] SOURCE [SOURCE...]
50 Convert SOURCE files to %s format.""" % cls.format_name
52 parser = optparse.OptionParser(usage=usage)
54 parser.add_option('-v', '--verbose', action='store_true', dest='verbose', default=False,
55 help='print status messages to stdout')
56 parser.add_option('-d', '--make-dir', action='store_true', dest='make_dir', default=False,
57 help='create a directory for author and put the output file in it')
58 parser.add_option('-o', '--output-file', dest='output_file', metavar='FILE',
59 help='specifies the output file')
60 parser.add_option('-O', '--output-dir', dest='output_dir', metavar='DIR',
61 help='specifies the directory for output')
63 if cls.cover_optional:
64 parser.add_option('-c', '--with-cover', action='store_true', dest='with_cover', default=False,
65 help='create default cover')
66 parser.add_option('-C', '--image-cache', dest='image_cache', metavar='URL',
67 help='prefix for image download cache' +
68 (' (implies --with-cover)' if cls.cover_optional else ''))
69 for option in cls.parser_options + cls.transform_options + cls.transform_flags:
72 options, input_filenames = parser.parse_args()
74 if len(input_filenames) < 1:
78 # Prepare additional args for parser.
80 for option in cls.parser_options:
81 parser_args[option.name()] = option.value(options)
82 # Prepare additional args for transform method.
84 for option in cls.transform_options:
85 transform_args[option.name()] = option.value(options)
86 # Add flags to transform_args, if any.
87 transform_flags = [flag.name() for flag in cls.transform_flags if flag.value(options)]
89 transform_args['flags'] = transform_flags
91 transform_args['verbose'] = True
92 # Add cover support, if any.
94 if options.image_cache:
95 def cover_class(book_info, *args, **kwargs):
96 return make_cover(book_info, image_cache=options.image_cache, *args, **kwargs)
97 transform_args['cover'] = cover_class
98 elif not cls.cover_optional or options.with_cover:
99 transform_args['cover'] = make_cover
103 for main_input in input_filenames:
107 # Where to find input?
108 if cls.uses_provider:
109 path, fname = os.path.realpath(main_input).rsplit('/', 1)
110 provider = DirDocProvider(path)
114 # Where to write output?
115 if not (options.output_file or options.output_dir):
116 output_file = os.path.splitext(main_input)[0] + '.' + cls.ext
118 output_file = options.output_file
120 # Do the transformation.
121 doc = WLDocument.from_file(main_input, provider=provider, **parser_args)
122 transform = cls.transform
123 if transform is None:
124 transform = getattr(WLDocument, 'as_%s' % cls.ext)
125 output = transform(doc, **transform_args)
127 doc.save_output_file(output, output_file, options.output_dir, options.make_dir, cls.ext)
129 except ParseError, e:
130 print '%(file)s:%(name)s:%(message)s' % {
132 'name': e.__class__.__name__,