#!/bin/bash
# ------------------------------------------------------------------------------
# Copyright (c) 2013-2022 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# Protected by the BSD3 license. Please read bellow for details.
#
# * Redistribution and use in source and binary forms,
# * with or without modification, are permitted provided
# * that the following conditions are met:
# *
# *   Redistributions of source code must retain the above
# *   copyright notice, this list of conditions and the
# *   following disclaimer.
# *
# *   Redistributions in binary form must reproduce the above
# *   copyright notice, this list of conditions and the following
# *   disclaimer in the documentation and/or other materials
# *   provided with the distribution.
# *
# *   Neither the name of the copyright holder nor the names
# *   of any other contributors may be used to endorse or
# *   promote products derived from this software without
# *   specific prior written permission.
# *
# * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
# * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# * OF SUCH DAMAGE.
# ------------------------------------------------------------------------------

locale_check() {
    locale -a | grep -qx "$1" || {
        disp W "Locale '$1' is not installed on this system."
        return 1
    }
    return 0
}


# ------------------------------------------------------------------------------
# Change locale to the given one in parameter
# ------------------------------------------------------------------------------
setlocale()
{
    local loc=$1
    [[ -z $loc ]] && disp E "No locale specified." && return 1

    locale_check "$loc" || return 1

    export LANG=$loc
    export LC_MESSAGES=$loc
    export LC_TIME=$loc
    export LC_NUMERIC=$loc
    export LC_MONETARY=$loc
    export LC_COLLATE=$loc
    export LC_CTYPE=$loc

    disp I "Locale set to $loc."
}
export -f setlocale


# ------------------------------------------------------------------------------
# Special case : change locale to C standard
# ------------------------------------------------------------------------------
setc()
{
    # Locale definitions
    export LC_ALL=C
    disp I "Locale changed to standard C (POSIX)."
}
export -f setc


# ------------------------------------------------------------------------------
# Change locale to French
# ------------------------------------------------------------------------------
setfr()
{
    # Set fr locale definitions
    setlocal "fr_FR.UTF-8"
}
export -f setfr


# ------------------------------------------------------------------------------
# Change locale to US (needed by Steam)
# ------------------------------------------------------------------------------
setus()
{
    setlocal "en_US.UTF-8"
}
export -f setus

# ------------------------------------------------------------------------------
# EOF