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# -*-eselect-*- vim: ft=eselect
# Copyright 2022-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
DESCRIPTION="Manage Zig versions"
MAINTAINER="bratishkaerik@landless-city.net"
show_selected_target() {
readlink "${EROOT}/usr/bin/zig"
}
find_targets() {
for f in "${EROOT}"/usr/bin/zig-*; do
[[ -f "${f}" ]] && basename "${f}"
done
}
remove_symlinks() {
rm "${EROOT}/usr/bin/zig"
}
set_symlinks() {
local target=$1
if is_number "${target}"; then
local targets=( $(find_targets) )
target=${targets[target-1]}
fi
[[ -z "${target}" || ! -f "${EROOT}/usr/bin/${target}" ]] \
&& die -q "Target \"$1\" doesn't appear to be valid!"
ln -s "${target}" "${EROOT}/usr/bin/zig"
}
### show action ###
describe_show() {
echo "Show current Zig version"
}
do_show() {
write_list_start "Current Zig version:"
if [[ -L "${EROOT}/usr/bin/zig" ]]; then
write_kv_list_entry "$(show_selected_target)" ""
else
write_kv_list_entry "(unset)" ""
fi
}
### list action ###
describe_list() {
echo "List available Zig versions"
}
do_list() {
local targets=( $(find_targets) )
local selected_target
selected_target=$(show_selected_target)
write_list_start "Available Zig versions:"
for (( i = 0; i < ${#targets[@]}; i++ )); do
[[ ${targets[i]} == "${selected_target}" ]] && targets[i]=$(highlight_marker "${targets[i]}")
done
write_numbered_list -m "(none found)" "${targets[@]}"
}
### set action ###
describe_set() {
echo "Set active Zig version"
}
describe_set_parameters() {
echo "<target>"
}
describe_set_options() {
echo "target: Target name or number (from 'list' action)"
}
do_set() {
[[ -z $1 ]] && die -q "You need to specify a target"
[[ $# -gt 1 ]] && die -q "Too many parameters"
test_usr_bin_writeable
if [[ -L "${EROOT}/usr/bin/zig" ]]; then
remove_symlinks || die -q "Couldn't remove symlink"
fi
set_symlinks "$1" || die -q "Couldn't set a new symlink"
}
### update action ###
describe_update() {
echo "Automatically update the zig symlink"
}
describe_update_options() {
echo "ifunset: Do not override currently set version"
}
do_update() {
[[ -z $1 || $1 == ifunset ]] || die -q "Usage error"
[[ $# -gt 1 ]] && die -q "Too many parameters"
test_usr_bin_writeable
if [[ -L ${EROOT}/usr/bin/zig ]]; then
if [[ $1 == ifunset && -e ${EROOT}/usr/bin/zig ]]; then
return
fi
remove_symlinks
elif [[ -e ${EROOT}/usr/bin/zig ]]; then
die -q "${EROOT}/usr/bin/zig exists but is not a symlink"
fi
local targets=( $(find_targets) )
if [[ ${#targets[@]} -gt 0 ]]; then
set_symlinks "${targets[${#targets[@]}-1]}"
fi
}
### helper functions ###
test_usr_bin_writeable() {
[[ -w ${EROOT}/usr/bin ]] || die -q "${EROOT}/usr/bin not writeable by current user. Are you root?"
}
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