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output.py

# -*- coding: utf-8 -*-

__license__ = 'GPL 3'
__copyright__ = '2009, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'

import os

from calibre.customize.conversion import OutputFormatPlugin, \
    OptionRecommendation
from calibre.ebooks.pdb import PDBError, get_writer, FORMAT_WRITERS

class PDBOutput(OutputFormatPlugin):

    name = 'PDB Output'
    author = 'John Schember'
    file_type = 'pdb'

    options = set([
        OptionRecommendation(name='format', recommended_value='doc',
            level=OptionRecommendation.LOW,
            short_switch='f', choices=FORMAT_WRITERS.keys(),
            help=(_('Format to use inside the pdb container. Choices are:')+\
            ' %s' % FORMAT_WRITERS.keys())),
        OptionRecommendation(name='output_encoding', recommended_value='cp1252',
            level=OptionRecommendation.LOW,
            help=_('Specify the character encoding of the output document. ' \
            'The default is cp1252. Note: This option is not honored by all ' \
            'formats.')),
        OptionRecommendation(name='inline_toc',
            recommended_value=False, level=OptionRecommendation.LOW,
            help=_('Add Table of Contents to beginning of the book.')),
    ])

    def convert(self, oeb_book, output_path, input_plugin, opts, log):
        close = False
        if not hasattr(output_path, 'write'):
            close = True
            if not os.path.exists(os.path.dirname(output_path)) and os.path.dirname(output_path) != '':
                os.makedirs(os.path.dirname(output_path))
            out_stream = open(output_path, 'wb')
        else:
            out_stream = output_path

        Writer = get_writer(opts.format)

        if Writer is None:
            raise PDBError('No writer available for format %s.' % format)

        writer = Writer(opts, log)

        out_stream.seek(0)
        out_stream.truncate()

        writer.write_content(oeb_book, out_stream, oeb_book.metadata)

        if close:
            out_stream.close()


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