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zip.py

from __future__ import with_statement
__license__   = 'GPL v3'
__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'

import os
from zipfile import ZipFile
from cStringIO import StringIO


def get_metadata(stream):
    stream_type = None
    zf = ZipFile(stream, 'r')
    for f in zf.namelist():
        stream_type = os.path.splitext(f)[1].lower()
        if stream_type:
            stream_type = stream_type[1:]
            if stream_type in ('lit', 'opf', 'prc', 'mobi', 'fb2', 'epub',
                               'rb', 'imp', 'pdf', 'lrf'):
                from calibre.ebooks.metadata.meta import get_metadata
                stream = StringIO(zf.read(f))
                return get_metadata(stream, stream_type)
    raise ValueError('No ebook found in ZIP archive')



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