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|
#!/bin/sh
set -eu
XDG_DATA_HOME=
XDG_CONFIG_HOME=
XDG_DATA_DIRS=
XDG_CONFIG_DIRS=
XDG_CACHE_HOME=
PIDDIR=
SERVICES=
# TODO: "[....] service" output if attached to a tty
load_service()
{
local service="${1}"
shift 1
XDG_DATA_HOME="${XDG_DATA_HOME:-${HOME}/.local/share}"
XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-${HOME}/.config}"
XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share/:/usr/share/}"
XDG_CONFIG_DIRS="${XDG_CONFIG_DIRS:-/etc/xdg}"
XDG_CACHE_HOME="${XDG_CACHE_HOME:-${HOME}/.cache}"
PIDDIR="${XDG_CACHE_HOME}/homerc"
# Default functions
stop() { :; }
restart() { stop; start; }
status() { :; }
# TODO: Errors
. "${XDG_CONFIG_HOME}/homerc/${service}"
}
act()
{
local action="${1}"
shift 1
"${action}"
return ${?}
}
match_session()
{
local needle="${1}"
local haystack="${2}"
shift 2
local hay=
IFS=','
for hay in ${haystack}; do
unset IFS
case "${hay}" in
'') continue;;
"${needle}" | "${needle}:"*) return 0;;
esac
done
unset IFS
return 1
}
chg_sessions()
{
local old_sessions="${1}"
local new_sessions="${2}"
shift 2
local is_running=
local should_run=
is_running=false
should_run=false
for session in ${SESSIONS}; do
if match_session "${session}" "${old_sessions}"; then
is_running=true
fi
if match_session "${session}" "${new_sessions}"; then
should_run=true
fi
done
if ${is_running} && ! ${should_run}; then
act 'stop'
return ${?}
fi
if ! ${is_running} && ${should_run}; then
act 'start'
return ${?}
fi
# No change.
return 0
}
usage()
{
printf 'Usage: %s <service> {start|stop|restart|status}\n' "${progname}"
return 0
}
main()
{
local service=
local action=
if [ ${#} -ne 2 ]; then
usage 1>&2
return 1
fi
service="${1}"
action="${2}"
case "${action}" in
'start' | 'stop' | 'restart' | 'status')
load_service "${service}" || return 1
act "${action}"
;;
*';'*)
load_service "${service}" || return 1
chg_sessions "${action%%;*}" "${action#*;}"
;;
*)
usage 1>&2
return 1
;;
esac
return 0
}
main "${@}"
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