dotfiles/scripts/rofi-power-menu

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2022-05-21 23:13:38 -04:00
#!/usr/bin/env bash
# This script defines just a mode for rofi instead of being a self-contained
# executable that launches rofi by itself. This makes it more flexible than
# running rofi inside this script as now the user can call rofi as one pleases.
# For instance:
#
# rofi -show powermenu -modi powermenu:./rofi-power-menu
#
# See README.md for more information.
set -e
set -u
# All supported choices
all=(shutdown reboot suspend hibernate logout lockscreen)
# By default, show all (i.e., just copy the array)
show=("${all[@]}")
declare -A texts
texts[lockscreen]="lock screen"
texts[switchuser]="switch user"
texts[logout]="log out"
texts[suspend]="suspend"
texts[hibernate]="hibernate"
texts[reboot]="reboot"
texts[shutdown]="shut down"
declare -A icons
icons[lockscreen]="\uf023"
icons[switchuser]="\uf518"
icons[logout]="\uf842"
icons[suspend]="\uf9b1"
icons[hibernate]="\uf7c9"
icons[reboot]="\ufc07"
icons[shutdown]="\uf011"
icons[cancel]="\u00d7"
declare -A actions
actions[lockscreen]="loginctl lock-session ${XDG_SESSION_ID-}"
#actions[switchuser]="???"
actions[logout]="loginctl terminate-session ${XDG_SESSION_ID-}"
actions[suspend]="systemctl suspend"
actions[hibernate]="systemctl hibernate"
actions[reboot]="systemctl reboot"
actions[shutdown]="systemctl poweroff"
# By default, ask for confirmation for actions that are irreversible
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confirmations=(reboot shutdown logout suspend hibernate lockscreen)
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# By default, no dry run
dryrun=false
showsymbols=true
function check_valid {
option="$1"
shift 1
for entry in "${@}"
do
if [ -z "${actions[$entry]+x}" ]
then
echo "Invalid choice in $1: $entry" >&2
exit 1
fi
done
}
# Parse command-line options
parsed=$(getopt --options=h --longoptions=help,dry-run,confirm:,choices:,choose:,symbols,no-symbols --name "$0" -- "$@")
if [ $? -ne 0 ]; then
echo 'Terminating...' >&2
exit 1
fi
eval set -- "$parsed"
unset parsed
while true; do
case "$1" in
"-h"|"--help")
echo "rofi-power-menu - a power menu mode for Rofi"
echo
echo "Usage: rofi-power-menu [--choices CHOICES] [--confirm CHOICES]"
echo " [--choose CHOICE] [--dry-run] [--symbols|--no-symbols]"
echo
echo "Use with Rofi in script mode. For instance, to ask for shutdown or reboot:"
echo
echo " rofi -show menu -modi \"menu:rofi-power-menu --choices=shutdown/reboot\""
echo
echo "Available options:"
echo " --dry-run Don't perform the selected action but print it to stderr."
echo " --choices CHOICES Show only the selected choices in the given order. Use / "
echo " as the separator. Available choices are lockscreen, logout,"
echo " suspend, hibernate, reboot and shutdown. By default, all"
echo " available choices are shown."
echo " --confirm CHOICES Require confirmation for the gives choices only. Use / as"
echo " the separator. Available choices are lockscreen, logout,"
echo " suspend, hibernate, reboot and shutdown. By default, only"
echo " irreversible actions logout, reboot and shutdown require"
echo " confirmation."
echo " --choose CHOICE Preselect the given choice and only ask for a confirmation"
echo " (if confirmation is set to be requested). It is strongly"
echo " recommended to combine this option with --confirm=CHOICE"
echo " if the choice wouldn't require confirmation by default."
echo " Available choices are lockscreen, logout, suspend,"
echo " hibernate, reboot and shutdown."
echo " --[no-]symbols Show Unicode symbols or not. Requires a font with support"
echo " for the symbols. Use, for instance, fonts from the"
echo " Nerdfonts collection. By default, they are shown"
echo " -h,--help Show this help text."
exit 0
;;
"--dry-run")
dryrun=true
shift 1
;;
"--confirm")
IFS='/' read -ra confirmations <<< "$2"
check_valid "$1" "${confirmations[@]}"
shift 2
;;
"--choices")
IFS='/' read -ra show <<< "$2"
check_valid "$1" "${show[@]}"
shift 2
;;
"--choose")
# Check that the choice is valid
check_valid "$1" "$2"
selectionID="$2"
shift 2
;;
"--symbols")
showsymbols=true
shift 1
;;
"--no-symbols")
showsymbols=false
shift 1
;;
"--")
shift
break
;;
*)
echo "Internal error" >&2
exit 1
;;
esac
done
# Define the messages after parsing the CLI options so that it is possible to
# configure them in the future.
function write_message {
icon="<span font_size=\"medium\">$1</span>"
text="<span font_size=\"medium\">$2</span>"
if [ "$showsymbols" = "true" ]
then
echo -n "\u200e$icon \u2068$text\u2069"
else
echo -n "$text"
fi
}
function print_selection {
echo -e "$1" | $(read -r -d '' entry; echo "echo $entry")
}
declare -A messages
declare -A confirmationMessages
for entry in "${all[@]}"
do
messages[$entry]=$(write_message "${icons[$entry]}" "${texts[$entry]^}")
done
for entry in "${all[@]}"
do
confirmationMessages[$entry]=$(write_message "${icons[$entry]}" "Yes, ${texts[$entry]}")
done
confirmationMessages[cancel]=$(write_message "${icons[cancel]}" "No, cancel")
if [ $# -gt 0 ]
then
# If arguments given, use those as the selection
selection="${@}"
else
# Otherwise, use the CLI passed choice if given
if [ -n "${selectionID+x}" ]
then
selection="${messages[$selectionID]}"
fi
fi
# Don't allow custom entries
echo -e "\0no-custom\x1ftrue"
# Use markup
echo -e "\0markup-rows\x1ftrue"
if [ -z "${selection+x}" ]
then
echo -e "\0prompt\x1fPower menu"
for entry in "${show[@]}"
do
echo -e "${messages[$entry]}\0icon\x1f${icons[$entry]}"
done
else
for entry in "${show[@]}"
do
if [ "$selection" = "$(print_selection "${messages[$entry]}")" ]
then
# Check if the selected entry is listed in confirmation requirements
for confirmation in "${confirmations[@]}"
do
if [ "$entry" = "$confirmation" ]
then
# Ask for confirmation
echo -e "\0prompt\x1fAre you sure"
echo -e "${confirmationMessages[$entry]}\0icon\x1f${icons[$entry]}"
echo -e "${confirmationMessages[cancel]}\0icon\x1f${icons[cancel]}"
exit 0
fi
done
# If not, then no confirmation is required, so mark confirmed
selection=$(print_selection "${confirmationMessages[$entry]}")
fi
if [ "$selection" = "$(print_selection "${confirmationMessages[$entry]}")" ]
then
if [ $dryrun = true ]
then
# Tell what would have been done
echo "Selected: $entry" >&2
else
# Perform the action
${actions[$entry]}
fi
exit 0
fi
if [ "$selection" = "$(print_selection "${confirmationMessages[cancel]}")" ]
then
# Do nothing
exit 0
fi
done
# The selection didn't match anything, so raise an error
echo "Invalid selection: $selection" >&2
exit 1
fi