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# 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 "<target>"
}
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 :
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