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144 lines
3.3 KiB
144 lines
3.3 KiB
# Copyright 1999-2020 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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DESCRIPTION="Manage /usr/bin/sndpeek audio engine"
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MAINTAINER="cedk@gentoo.org"
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# find a list of sndpeek symlink targets, best first
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find_targets() {
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local f
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for f in \
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${ROOT}/usr/bin/sndpeek-alsa \
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${ROOT}/usr/bin/sndpeek-jack \
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${ROOT}/usr/bin/sndpeek-oss \
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; do
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if [[ -f ${f} ]] ; then
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echo $(basename ${f} )
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fi
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done
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}
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# try to remove the sndpeek symlink
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remove_symlinks() {
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rm -f "${ROOT}"/usr/bin/sndpeek &>/dev/null
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}
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# set the sndpeek symlink
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set_symlinks() {
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local target="${1}" targets
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if is_number "${target}" && [[ ${target} -ge 1 ]] ; then
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targets=( $(find_targets ) )
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target=${targets[$(( ${target} - 1 ))]}
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fi
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if [[ -f "${ROOT}/usr/bin/${target}" ]] ; then
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remove_symlinks
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# it's not okay if these fail
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ln -s "${ROOT}/usr/bin/${target}" "${ROOT}/usr/bin/sndpeek" || \
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die "Couldn't set ${target} /usr/bin/sndpeek symlink"
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else
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die -q "Target \"${1}\" doesn't appear to be valid!"
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fi
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}
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### show action ###
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describe_show() {
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echo "Show the current sndpeek audio engine"
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}
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do_show() {
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[[ -z "${@}" ]] || die -q "Too many parameters"
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write_list_start "Current sndpeek audio engine:"
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if [[ -L "${ROOT}/usr/bin/sndpeek" ]] ; then
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write_kv_list_entry "$(basename $(canonicalise ${ROOT}/usr/bin/sndpeek ) )" ""
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elif [[ -e "${ROOT}/usr/bin/sndpeek" ]] ; then
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write_kv_list_entry "(not a symlink)" ""
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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 sndpeek audio engines"
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}
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do_list() {
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[[ -z "${@}" ]] || die -q "Too many parameters"
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local i targets
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targets=( $(find_targets ) )
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write_list_start "Available sndpeek audio engines:"
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for (( i = 0 ; i < ${#targets[@]} ; i = i + 1 )) ; do
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[[ ${targets[${i}]} == $(basename $(canonicalise ${ROOT}/usr/bin/sndpeek ) ) ]] && \
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targets[${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 a new sndpeek audio engines"
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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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describe_set_parameters() {
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echo "<target>"
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}
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do_set() {
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if [[ -z "${1}" ]] ; then
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die -q "You didn't give me an audio engine"
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elif [[ -n "${2}" ]] ; then
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die -q "Too many parameters"
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elif [[ -L "${ROOT}/usr/bin/sndpeek" ]] ; then
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if ! remove_symlinks ; then
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die -q "Can't remove existing provider"
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elif ! set_symlinks "${1}" ; then
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die -q "Can't set new provider"
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fi
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elif [[ -e "${ROOT}/usr/bin/sndpeek" ]] ; then
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die -q "Sorry, ${ROOT}/usr/bin/sndpeek confuses me"
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else
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set_symlinks "${1}" || die -q "Can't set a new audio engine"
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fi
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}
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### update action ###
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describe_update() {
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echo "Automatically update the audio engine"
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}
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describe_update_options() {
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echo "--if-unset : Do not override existing audio engine"
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}
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do_update() {
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[[ -z "${1}" ]] || ( [[ -z "${2}" ]] && [[ "${1}" == "--if-unset" ]] ) || \
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die -q "Usage error"
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if [[ -L "${ROOT}/usr/bin/sndpeek" ]] ; then
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[[ ${1} == "--if-unset" ]] && return
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remove_symlinks || die -q "Can't remove existing link"
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fi
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if [[ -e "${ROOT}/usr/bin/sndpeek" ]] ; then
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die -q "Can't set a new provider"
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elif ! [[ -z $(find_targets ) ]] ; then
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set_symlinks 1 || die -q "Can't set a new provider"
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fi
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}
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# vim: set ft=eselect :
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