librarian/mobi.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
   4 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   5 #
   6
   7 from copy import deepcopy
   8 import os
   9 import subprocess
  10 from tempfile import NamedTemporaryFile
  11
  12 from librarian import OutputFile
  13
  14
  15 def transform(wldoc, verbose=False, sample=None, cover=None,
  16               use_kindlegen=False, flags=None):
  17     """ produces a MOBI file
  18
  19     wldoc: a WLDocument
  20     sample=n: generate sample e-book (with at least n paragraphs)
  21     cover: a cover.Cover factory overriding default
  22     flags: less-advertising,
  23     """
  24
  25     document = deepcopy(wldoc)
  26     del wldoc
  27
  28     epub = document.as_epub(verbose=verbose, sample=sample,
  29                             html_toc=True, cover=cover or True, flags=flags)
  30     if verbose:
  31         kwargs = {}
  32     else:
  33         devnull = open("/dev/null", 'w')
  34         kwargs = {"stdout": devnull, "stderr": devnull}
  35
  36     output_file = NamedTemporaryFile(prefix='librarian', suffix='.mobi',
  37                                      delete=False)
  38     output_file.close()
  39
  40     if use_kindlegen:
  41         output_file_basename = os.path.basename(output_file.name)
  42         subprocess.check_call(['kindlegen', '-c2', epub.get_filename(),
  43                               '-o', output_file_basename], **kwargs)
  44     else:
  45         subprocess.check_call(['ebook-convert', epub.get_filename(),
  46                                output_file.name, '--no-inline-toc',
  47                                '--mobi-file-type=both',
  48                                '--mobi-ignore-margins'], **kwargs)
  49     return OutputFile.from_filename(output_file.name)