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# -*-eselect-*- vim: ft=eselect
# Copyright 2005-2020 Gentoo Authors
# Distributed under the terms of the GNU GPL version 2 or later
inherit config
DESCRIPTION="Manage the LANG environment variable"
MAINTAINER="matsuu@gentoo.org"
# file name as documented in http://www.gentoo.org/doc/en/utf-8.xml
LOCALE_ENVFILE="/etc/env.d/02locale"
locale_list() {
"${EROOT}/usr/bin/locale" -a
}
validate_locale() {
local lang=$1
# exit status of locale is unreliable, check for output to stderr instead
[[ -z $(LC_ALL=${lang} "${EROOT}/usr/bin/locale" 2>&1 >/dev/null) ]]
}
# find a list of valid targets
find_targets() {
local list cur
list=$(locale_list)
echo ${list}
# also output the current value if it isn't in our list
cur=$(read_env_value)
[[ -n ${cur} ]] && ! has "${cur}" ${list} && echo "${cur}"
}
# read variable value from config file
read_env_value() {
load_config "${EROOT}${LOCALE_ENVFILE}" "LANG"
}
# write variable to config file
write_env_value() {
[[ -w ${EROOT}${LOCALE_ENVFILE%/*} ]] \
|| die -q "You need root privileges!"
store_config "${EROOT}${LOCALE_ENVFILE}" "LANG" "$1"
}
### show action ###
describe_show() {
echo "Show value of the LANG variable in profile"
}
do_show() {
[[ $# -gt 0 ]] && die -q "Too many parameters"
local cur=$(read_env_value)
write_list_start "LANG variable in profile:"
write_kv_list_entry "${cur:-(none)}"
}
### list action ###
describe_list() {
echo "List available targets for the LANG variable"
}
do_list() {
[[ $# -gt 0 ]] && die -q "Too many parameters"
local cur targets i
cur=$(read_env_value)
targets=( $(find_targets) )
write_list_start "Available targets for the LANG variable:"
for (( i = 0; i < ${#targets[@]}; i = i + 1 )); do
targets[i]="${targets[i]}"
# display a star to indicate the currently chosen version
[[ ${targets[i]} = "${cur}" ]] \
&& targets[i]=$(highlight_marker "${targets[i]}")
done
write_numbered_list "${targets[@]}"
if is_output_mode brief; then
:
elif [[ ${#targets[@]} -eq 0 ]]; then
write_kv_list_entry "(none found)" ""
else
write_numbered_list_entry " " "(free form)"
fi
}
### set action ###
describe_set() {
echo "Set the LANG variable in profile"
}
describe_set_options() {
echo "target : Target name or number (from 'list' action)"
}
describe_set_parameters() {
echo "<target>"
}
do_set() {
[[ -z $1 ]] && die -q "You didn't tell me what to set the variable to"
[[ $# -gt 1 ]] && die -q "Too many parameters"
local target=$1 targets=()
# target may be specified by its name or its index
if is_number "${target}"; then
targets=( $(find_targets) )
[[ ${target} -ge 1 && ${target} -le ${#targets[@]} ]] \
|| die -q "Number out of range: $1"
target=${targets[target-1]%%:*}
fi
validate_locale "${target}" \
|| die -q "Target \"${target}\" doesn't appear to be valid!"
echo "Setting LANG to ${target} ..."
write_env_value "${target}"
# update profile
do_action env update noldconfig
if [[ ${ROOT:-/} = / ]]; then
echo "Run \". ${EROOT}/etc/profile\" to update the variable" \
"in your shell."
fi
}
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