#!/bin/bash

#

# cli_getCurrentLocale.sh -- This function checks LANG environment

# variable and returns the current locale from more specific to less

# specific. For example, if the locale 'en_GB' is the current one, it

# should be used instead of just 'en'.

#

# Copyright (C) 2009-2011  Alain Reguera Delgado

# 

# 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; either version 2 of the

# License, or (at your option) any later version.

# 

# 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.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

# USA.

# 

# ----------------------------------------------------------------------

# $Id$

# ----------------------------------------------------------------------

function cli_getCurrentLocale {

    local -a PATTERNS

    local PATTERN=''

    local CURRENTLOCALE=''

    # Define pattern for current locale using LL_CC.ENCODING format.

    PATTERNS[0]=$LANG

    # Define pattern for current locale using LL_CC format.

    PATTERNS[1]=$(echo $LANG | sed -r 's!(^[a-z]{2,3}_[A-Z]{2}).+$!\1!')

    # Define pattern for current locale using LL format.

    PATTERNS[2]=$(echo $LANG | sed -r 's!^([a-z]{2,3}).+$!\1!')

    # Define which system locale to use as centos-art.sh script

    # current locale. Take care with pattern order, it is relevant for

    # this function to work as expected.

    for PATTERN in "${PATTERNS[@]}";do

        CURRENTLOCALE=$(cli_getLocales | egrep $PATTERN)

        if [[ $CURRENTLOCALE != '' ]];then

            break

        fi

    done

    # Define centos-art.sh script default current locale. If

    # centos-art.sh script doesn't support current system locale, use

    # English (en) as default current locale.

    if [[ $CURRENTLOCALE == '' ]];then

        CURRENTLOCALE='en'

    fi

    # Output current locale. Be sure that just one value is output.

    echo $CURRENTLOCALE | sort | uniq | head -n1

}