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# -*- coding: utf-8 -*-
#
# Copyright (c) 2011 Red Hat, Inc.
# Copyright (c) 2010 Ville Skyttä
# Copyright (c) 2009 Tim Lauridsen
# Copyright (c) 2007 Marcus Kuhn
#
# kitchen is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# kitchen 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 Lesser General Public License for
# more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with kitchen; if not, see <http://www.gnu.org/licenses/>
#
# Authors:
# James Antill <james@fedoraproject.org>
# Marcus Kuhn
# Toshio Kuratomi <toshio@fedoraproject.org>
# Tim Lauridsen
# Ville Skyttä
#
# Portions of this are from yum/i18n.py
'''
-----
UTF-8
-----
Functions for operating on byte :class:`str` encoded as :term:`UTF-8`
.. note::
In many cases, it is better to convert to :class:`unicode`, operate on the
strings, then convert back to :term:`UTF-8`. :class:`unicode` type can
handle many of these functions itself. For those that it doesn't
(removing control characters from length calculations, for instance) the
code to do so with a :class:`unicode` type is often simpler.
.. warning::
All of the functions in this module are deprecated. Most of them have
been replaced with functions that operate on unicode values in
:mod:`kitchen.text.display`. :func:`kitchen.text.utf8.utf8_valid` has
been replaced with a function in :mod:`kitchen.text.misc`.
'''
import warnings
from kitchen import b_
from kitchen.text.converters import to_unicode, to_bytes
from kitchen.text.misc import byte_string_valid_encoding
from kitchen.text.display import _textual_width_le, \
byte_string_textual_width_fill, fill, textual_width, \
textual_width_chop, wrap
#
# Deprecated functions
#
def utf8_valid(msg):
'''**Deprecated** Detect if a string is valid :term:`utf-8`
Use :func:`kitchen.text.misc.byte_string_valid_encoding` instead.
'''
warnings.warn(b_('kitchen.text.utf8.utf8_valid is deprecated. Use'
' kitchen.text.misc.byte_string_valid_encoding(msg) instead'),
DeprecationWarning, stacklevel=2)
return byte_string_valid_encoding(msg)
def utf8_width(msg):
'''**Deprecated** Get the :term:`textual width` of a :term:`utf-8` string
Use :func:`kitchen.text.display.textual_width` instead.
'''
warnings.warn(b_('kitchen.text.utf8.utf8_width is deprecated. Use'
' kitchen.text.display.textual_width(msg) instead'),
DeprecationWarning, stacklevel=2)
return textual_width(msg)
def utf8_width_chop(msg, chop=None):
'''**Deprecated** Return a string chopped to a given :term:`textual width`
Use :func:`~kitchen.text.display.textual_width_chop` and
:func:`~kitchen.text.display.textual_width` instead::
>>> msg = 'く ku ら ra と to み mi'
>>> # Old way:
>>> utf8_width_chop(msg, 5)
(5, 'く ku')
>>> # New way
>>> from kitchen.text.converters import to_bytes
>>> from kitchen.text.display import textual_width, textual_width_chop
>>> (textual_width(msg), to_bytes(textual_width_chop(msg, 5)))
(5, 'く ku')
'''
warnings.warn(b_('kitchen.text.utf8.utf8_width_chop is deprecated. Use'
' kitchen.text.display.textual_width_chop instead'), DeprecationWarning,
stacklevel=2)
if chop == None:
return textual_width(msg), msg
as_bytes = not isinstance(msg, unicode)
chopped_msg = textual_width_chop(msg, chop)
if as_bytes:
chopped_msg = to_bytes(chopped_msg)
return textual_width(chopped_msg), chopped_msg
def utf8_width_fill(msg, fill, chop=None, left=True, prefix='', suffix=''):
'''**Deprecated** Pad a :term:`utf-8` string to fill a specified width
Use :func:`~kitchen.text.display.byte_string_textual_width_fill` instead
'''
warnings.warn(b_('kitchen.text.utf8.utf8_width_fill is deprecated. Use'
' kitchen.text.display.byte_string_textual_width_fill instead'),
DeprecationWarning, stacklevel=2)
return byte_string_textual_width_fill(msg, fill, chop=chop, left=left,
prefix=prefix, suffix=suffix)
def utf8_text_wrap(text, width=70, initial_indent='', subsequent_indent=''):
'''**Deprecated** Similar to :func:`textwrap.wrap` but understands
:term:`utf-8` data and doesn't screw up lists/blocks/etc
Use :func:`kitchen.text.display.wrap` instead
'''
warnings.warn(b_('kitchen.text.utf8.utf8_text_wrap is deprecated. Use'
' kitchen.text.display.wrap instead'),
DeprecationWarning, stacklevel=2)
as_bytes = not isinstance(text, unicode)
text = to_unicode(text)
lines = wrap(text, width=width, initial_indent=initial_indent,
subsequent_indent=subsequent_indent)
if as_bytes:
lines = [to_bytes(m) for m in lines]
return lines
def utf8_text_fill(text, *args, **kwargs):
'''**Deprecated** Similar to :func:`textwrap.fill` but understands
:term:`utf-8` strings and doesn't screw up lists/blocks/etc.
Use :func:`kitchen.text.display.fill` instead.
'''
warnings.warn(b_('kitchen.text.utf8.utf8_text_fill is deprecated. Use'
' kitchen.text.display.fill instead'),
DeprecationWarning, stacklevel=2)
# This assumes that all args. are utf8.
return fill(text, *args, **kwargs)
def _utf8_width_le(width, *args):
'''**Deprecated** Convert the arguments to unicode and use
:func:`kitchen.text.display._textual_width_le` instead.
'''
warnings.warn(b_('kitchen.text.utf8._utf8_width_le is deprecated. Use'
' kitchen.text.display._textual_width_le instead'),
DeprecationWarning, stacklevel=2)
# This assumes that all args. are utf8.
return _textual_width_le(width, to_unicode(''.join(args)))
__all__ = ('utf8_text_fill', 'utf8_text_wrap', 'utf8_valid', 'utf8_width',
'utf8_width_chop', 'utf8_width_fill')