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