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# encoding=UTF-8
# Copyright © 2008, 2009, 2010, 2011 Jakub Wilk <jwilk@jwilk.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 dated June, 1991.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
from . import utils
def get_icu():
try:
# For PyICU ≥ 1.0
import icu
return icu
except ImportError:
pass
try:
# For PyICU < 1.0
import PyICU as icu
return icu
except ImportError, ex:
utils.enhance_import_error(ex, 'PyICU', 'python-pyicu', 'http://pyicu.osafoundation.org/')
raise
def simple_word_break_iterator(text):
'''
Create an instance of simple space-to-space word break interator.
'''
if not text:
return
space = text[0].isspace()
for n, ch in enumerate(text):
if space != ch.isspace():
yield n
space = not space
yield len(text)
def word_break_iterator(text, locale=None):
'''
Create an instance of word break interator.
text: unicode string
locale: ICU locale or None
'''
if locale is None:
return simple_word_break_iterator(text)
icu = get_icu()
break_iterator = icu.BreakIterator.createWordInstance(locale)
break_iterator.setText(text)
return break_iterator
# vim:ts=4 sw=4 et
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