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gryf
0f9792df36
Here is the first batch of modules, which are needed for converting several formats to LRF. Some of the logic has been change, more cleanups will follow.
111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import absolute_import, division, print_function, unicode_literals
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__license__ = 'GPL 3'
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__copyright__ = '2010, Hiroshi Miura <miurahr@linux.com>'
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__docformat__ = 'restructuredtext en'
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'''
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Decode unicode text to an ASCII representation of the text in Chinese.
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Transliterate unicode characters to ASCII based on chinese pronounce.
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Derived from John Schember's unidecode library. Which was created
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as part of calibre.
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Copyright(c) 2009, John Schember <john@nachtimwald.com>
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Based on the ruby unidecode gem (http://rubyforge.org/projects/unidecode/) which
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is based on the perl module Text::Unidecode
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(http://search.cpan.org/~sburke/Text-Unidecode-0.04/). More information about
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unidecode can be found at
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http://interglacial.com/~sburke/tpj/as_html/tpj22.html.
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The major differences between this implementation and others is it's written in
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python and it uses a single dictionary instead of loading the code group files
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as needed.
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Copyright (c) 2007 Russell Norris
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Copyright 2001, Sean M. Burke <sburke@cpan.org>, all rights reserved.
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The programs and documentation in this dist are distributed in the
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hope that they will be useful, but without any warranty; without even
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the implied warranty of merchantability or fitness for a particular
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purpose.
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself.
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'''
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import re
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from ebook_converter.ebooks.unihandecode.unicodepoints import CODEPOINTS
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from ebook_converter.ebooks.unihandecode.zhcodepoints import CODEPOINTS as HANCODES
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from ebook_converter.polyglot.builtins import unicode_type
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class Unidecoder(object):
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codepoints = {}
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def __init__(self):
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self.codepoints = CODEPOINTS
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self.codepoints.update(HANCODES)
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def decode(self, text):
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# Replace characters larger than 127 with their ASCII equivelent.
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return re.sub('[^\x00-\x7f]',lambda x: self.replace_point(x.group()), text)
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def replace_point(self, codepoint):
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'''
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Returns the replacement character or ? if none can be found.
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'''
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try:
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# Split the unicode character xABCD into parts 0xAB and 0xCD.
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# 0xAB represents the group within CODEPOINTS to query and 0xCD
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# represents the position in the list of characters for the group.
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return self.codepoints[self.code_group(codepoint)][self.grouped_point(
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codepoint)]
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except:
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return '?'
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def code_group(self, character):
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'''
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Find what group character is a part of.
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'''
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# Code groups withing CODEPOINTS take the form 'xAB'
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if not isinstance(character, unicode_type):
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character = unicode_type(character, "utf-8")
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return 'x%02x' % (ord(character) >> 8)
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def grouped_point(self, character):
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'''
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Return the location the replacement character is in the list for a
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the group character is a part of.
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'''
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if not isinstance(character, unicode_type):
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character = unicode_type(character, "utf-8")
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return ord(character) & 255
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