"""
Decode unicode text to an ASCII representation of the text for Japanese.
 Translate unicode string to ASCII roman string.

API is based on the python unidecode,
which is based on Ruby gem (http://rubyforge.org/projects/unidecode/)
and  perl module Text::Unidecode
(http://search.cpan.org/~sburke/Text-Unidecode-0.04/).

This functionality is owned by Kakasi Japanese processing engine.

Copyright (c) 2010 Hiroshi Miura
"""
import re

from ebook_converter.ebooks.unihandecode.unidecoder import Unidecoder
from ebook_converter.ebooks.unihandecode.unicodepoints import CODEPOINTS
from ebook_converter.ebooks.unihandecode.jacodepoints import CODEPOINTS as JACODES
from ebook_converter.ebooks.unihandecode.pykakasi.kakasi import kakasi


__license__ = 'GPL 3'
__copyright__ = '2010, Hiroshi Miura <miurahr@linux.com>'
__docformat__ = 'restructuredtext en'


class Jadecoder(Unidecoder):
    kakasi = None
    codepoints = {}

    def __init__(self):
        self.codepoints = CODEPOINTS
        self.codepoints.update(JACODES)
        self.kakasi = kakasi()

    def decode(self, text):
        try:
            result=self.kakasi.do(text)
            return re.sub('[^\x00-\x7f]', lambda x: self.replace_point(x.group()),result)
        except:
            return re.sub('[^\x00-\x7f]', lambda x: self.replace_point(x.group()),text)