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Current File : //proc/thread-self/root/usr/lib/calibre/calibre/ebooks/oeb/iterator/__init__.py

#!/usr/bin/env python3


__license__   = 'GPL v3'
__copyright__ = '2012, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en'

import sys, os, re

from calibre.customize.ui import available_input_formats


def is_supported(path):
    ext = os.path.splitext(path)[1].replace('.', '').lower()
    ext = re.sub(r'(x{0,1})htm(l{0,1})', 'html', ext)
    return ext in available_input_formats() or ext == 'kepub'


class UnsupportedFormatError(Exception):

    def __init__(self, fmt):
        Exception.__init__(self, _('%s format books are not supported')%fmt.upper())


def EbookIterator(*args, **kwargs):
    'For backwards compatibility'
    from calibre.ebooks.oeb.iterator.book import EbookIterator
    return EbookIterator(*args, **kwargs)


def get_preprocess_html(path_to_ebook, output=None):
    from calibre.ebooks.conversion.plumber import set_regex_wizard_callback, Plumber
    from calibre.utils.logging import DevNull
    from calibre.ptempfile import TemporaryDirectory
    raw = {}
    set_regex_wizard_callback(raw.__setitem__)
    with TemporaryDirectory('_regex_wiz') as tdir:
        pl = Plumber(path_to_ebook, os.path.join(tdir, 'a.epub'), DevNull(), for_regex_wizard=True)
        pl.run()
        items = [raw[item.href] for item in pl.oeb.spine if item.href in raw]

    with (sys.stdout if output is None else open(output, 'wb')) as out:
        for html in items:
            out.write(html.encode('utf-8'))
            out.write(b'\n\n' + b'-'*80 + b'\n\n')

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