# Copyright 1999-2020 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 DESCRIPTION="Manage /usr/bin/sndpeek audio engine" MAINTAINER="cedk@gentoo.org" # find a list of sndpeek symlink targets, best first find_targets() { local f for f in \ ${ROOT}/usr/bin/sndpeek-alsa \ ${ROOT}/usr/bin/sndpeek-jack \ ${ROOT}/usr/bin/sndpeek-oss \ ; do if [[ -f ${f} ]] ; then echo $(basename ${f} ) fi done } # try to remove the sndpeek symlink remove_symlinks() { rm -f "${ROOT}"/usr/bin/sndpeek &>/dev/null } # set the sndpeek symlink set_symlinks() { local target="${1}" targets if is_number "${target}" && [[ ${target} -ge 1 ]] ; then targets=( $(find_targets ) ) target=${targets[$(( ${target} - 1 ))]} fi if [[ -f "${ROOT}/usr/bin/${target}" ]] ; then remove_symlinks # it's not okay if these fail ln -s "${ROOT}/usr/bin/${target}" "${ROOT}/usr/bin/sndpeek" || \ die "Couldn't set ${target} /usr/bin/sndpeek symlink" else die -q "Target \"${1}\" doesn't appear to be valid!" fi } ### show action ### describe_show() { echo "Show the current sndpeek audio engine" } do_show() { [[ -z "${@}" ]] || die -q "Too many parameters" write_list_start "Current sndpeek audio engine:" if [[ -L "${ROOT}/usr/bin/sndpeek" ]] ; then write_kv_list_entry "$(basename $(canonicalise ${ROOT}/usr/bin/sndpeek ) )" "" elif [[ -e "${ROOT}/usr/bin/sndpeek" ]] ; then write_kv_list_entry "(not a symlink)" "" else write_kv_list_entry "(unset)" "" fi } ### list action ### describe_list() { echo "List available sndpeek audio engines" } do_list() { [[ -z "${@}" ]] || die -q "Too many parameters" local i targets targets=( $(find_targets ) ) write_list_start "Available sndpeek audio engines:" for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do [[ ${targets[${i}]} == $(basename $(canonicalise ${ROOT}/usr/bin/sndpeek ) ) ]] && \ targets[${i}]=$(highlight_marker "${targets[${i}]}") done write_numbered_list -m "(none found)" "${targets[@]}" } ### set action ### describe_set() { echo "Set a new sndpeek audio engines" } describe_set_options() { echo "target : Target name or number (from 'list' action)" } describe_set_parameters() { echo "" } do_set() { if [[ -z "${1}" ]] ; then die -q "You didn't give me an audio engine" elif [[ -n "${2}" ]] ; then die -q "Too many parameters" elif [[ -L "${ROOT}/usr/bin/sndpeek" ]] ; then if ! remove_symlinks ; then die -q "Can't remove existing provider" elif ! set_symlinks "${1}" ; then die -q "Can't set new provider" fi elif [[ -e "${ROOT}/usr/bin/sndpeek" ]] ; then die -q "Sorry, ${ROOT}/usr/bin/sndpeek confuses me" else set_symlinks "${1}" || die -q "Can't set a new audio engine" fi } ### update action ### describe_update() { echo "Automatically update the audio engine" } describe_update_options() { echo "--if-unset : Do not override existing audio engine" } do_update() { [[ -z "${1}" ]] || ( [[ -z "${2}" ]] && [[ "${1}" == "--if-unset" ]] ) || \ die -q "Usage error" if [[ -L "${ROOT}/usr/bin/sndpeek" ]] ; then [[ ${1} == "--if-unset" ]] && return remove_symlinks || die -q "Can't remove existing link" fi if [[ -e "${ROOT}/usr/bin/sndpeek" ]] ; then die -q "Can't set a new provider" elif ! [[ -z $(find_targets ) ]] ; then set_symlinks 1 || die -q "Can't set a new provider" fi } # vim: set ft=eselect :