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#!/usr/bin/env bash
# Taken from here: https://raw.githubusercontent.com/vlevit/notify-send.sh/master/notify-send.sh
# notify-send.sh - drop-in replacement for notify-send with more features
# Copyright (C) 2015-2019 notify-send.sh authors (see AUTHORS file)
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Desktop Notifications Specification
# https://developer.gnome.org/notification-spec/
VERSION=1.0
NOTIFY_ARGS=(--session
--dest org.freedesktop.Notifications
--object-path /org/freedesktop/Notifications)
EXPIRE_TIME=-1
APP_NAME="${0##*/}"
REPLACE_ID=0
URGENCY=1
HINTS=()
SUMMARY_SET=n
help() {
cat <<EOF
Usage:
notify-send.sh [OPTION...] <SUMMARY> [BODY] - create a notification
Help Options:
-?|--help Show help options
Application Options:
-u, --urgency=LEVEL Specifies the urgency level (low, normal, critical).
-t, --expire-time=TIME Specifies the timeout in milliseconds at which to expire the notification.
-f, --force-expire Forcefully closes the notification when the notification has expired.
-a, --app-name=APP_NAME Specifies the app name for the icon.
-i, --icon=ICON[,ICON...] Specifies an icon filename or stock icon to display.
-c, --category=TYPE[,TYPE...] Specifies the notification category.
-h, --hint=TYPE:NAME:VALUE Specifies basic extra data to pass. Valid types are int, double, string and byte.
-o, --action=LABEL:COMMAND Specifies an action. Can be passed multiple times. LABEL is usually a button's label. COMMAND is a shell command executed when action is invoked.
-d, --default-action=COMMAND Specifies the default action which is usually invoked by clicking the notification.
-l, --close-action=COMMAND Specifies the action invoked when notification is closed.
-p, --print-id Print the notification ID to the standard output.
-r, --replace=ID Replace existing notification.
-R, --replace-file=FILE Store and load notification replace ID to/from this file.
-s, --close=ID Close notification.
-v, --version Version of the package.
EOF
}
convert_type() {
case "$1" in
int) echo int32 ;;
double|string|byte) echo "$1" ;;
*) echo error; return 1 ;;
esac
}
make_action_key() {
echo "$(tr -dc _A-Z-a-z-0-9 <<< \"$1\")${RANDOM}"
}
make_action() {
local action_key="$1"
printf -v text "%q" "$2"
echo "\"$action_key\", \"$text\""
}
make_hint() {
type=$(convert_type "$1")
[[ ! $? = 0 ]] && return 1
name="$2"
[[ "$type" = string ]] && command="\"$3\"" || command="$3"
echo "\"$name\": <$type $command>"
}
concat_actions() {
local result="$1"
shift
for s in "$@"; do
result="$result, $s"
done
echo "[$result]"
}
concat_hints() {
local result="$1"
shift
for s in "$@"; do
result="$result, $s"
done
echo "{$result}"
}
parse_notification_id(){
sed 's/(uint32 \([0-9]\+\),)/\1/g'
}
notify() {
local actions="$(concat_actions "${ACTIONS[@]}")"
local hints="$(concat_hints "${HINTS[@]}")"
NOTIFICATION_ID=$(gdbus call "${NOTIFY_ARGS[@]}" \
--method org.freedesktop.Notifications.Notify \
"$APP_NAME" "$REPLACE_ID" "$ICON" "$SUMMARY" "$BODY" \
"${actions}" "${hints}" "int32 $EXPIRE_TIME" \
| parse_notification_id)
if [[ -n "$STORE_ID" ]] ; then
echo "$NOTIFICATION_ID" > $STORE_ID
fi
if [[ -n "$PRINT_ID" ]] ; then
echo "$NOTIFICATION_ID"
fi
if [[ -n "$FORCE_EXPIRE" ]] ; then
type bc &> /dev/null || { echo "bc command not found. Please install bc package."; exit 1; }
SLEEP_TIME="$(bc <<< "scale=3; $EXPIRE_TIME / 1000")"
( sleep "$SLEEP_TIME" ; notify_close "$NOTIFICATION_ID" ) &
fi
maybe_run_action_handler
}
notify_close () {
gdbus call "${NOTIFY_ARGS[@]}" --method org.freedesktop.Notifications.CloseNotification "$1" >/dev/null
}
process_urgency() {
case "$1" in
low) URGENCY=0 ;;
normal) URGENCY=1 ;;
critical) URGENCY=2 ;;
*) echo "Unknown urgency $URGENCY specified. Known urgency levels: low, normal, critical."
exit 1
;;
esac
}
process_category() {
IFS=, read -a categories <<< "$1"
for category in "${categories[@]}"; do
hint="$(make_hint string category "$category")"
HINTS=("${HINTS[@]}" "$hint")
done
}
process_hint() {
IFS=: read type name command <<< "$1"
if [[ -z "$name" ]] || [[ -z "$command" ]] ; then
echo "Invalid hint syntax specified. Use TYPE:NAME:VALUE."
exit 1
fi
hint="$(make_hint "$type" "$name" "$command")"
if [[ ! $? = 0 ]] ; then
echo "Invalid hint type \"$type\". Valid types are int, double, string and byte."
exit 1
fi
HINTS=("${HINTS[@]}" "$hint")
}
maybe_run_action_handler() {
if [[ -n "$NOTIFICATION_ID" ]] && [[ -n "$ACTION_COMMANDS" ]]; then
local notify_action="$(dirname ${BASH_SOURCE[0]})/notify-action"
if [[ -x "$notify_action" ]] ; then
"$notify_action" "$NOTIFICATION_ID" "${ACTION_COMMANDS[@]}" &
exit 0
else
echo "executable file not found: $notify_action"
exit 1
fi
fi
}
process_action() {
IFS=: read name command <<<"$1"
if [[ -z "$name" ]] || [[ -z "$command" ]]; then
echo "Invalid action syntax specified. Use NAME:COMMAND."
exit 1
fi
local action_key="$(make_action_key "$name")"
ACTION_COMMANDS=("${ACTION_COMMANDS[@]}" "$action_key" "$command")
local action="$(make_action "$action_key" "$name")"
ACTIONS=("${ACTIONS[@]}" "$action")
}
process_special_action() {
action_key="$1"
command="$2"
if [[ -z "$action_key" ]] || [[ -z "$command" ]]; then
echo "Command must not be empty"
exit 1
fi
ACTION_COMMANDS=("${ACTION_COMMANDS[@]}" "$action_key" "$command")
if [[ "$action_key" != close ]]; then
local action="$(make_action "$action_key" "$name")"
ACTIONS=("${ACTIONS[@]}" "$action")
fi
}
process_posargs() {
if [[ "$1" = -* ]] && ! [[ "$positional" = yes ]] ; then
echo "Unknown option $1"
exit 1
else
if [[ "$SUMMARY_SET" = n ]]; then
SUMMARY="$1"
SUMMARY_SET=y
else
BODY="$1"
fi
fi
}
while (( $# > 0 )) ; do
case "$1" in
-\?|--help)
help
exit 0
;;
-v|--version)
echo "${0##*/} $VERSION"
exit 0
;;
-u|--urgency|--urgency=*)
[[ "$1" = --urgency=* ]] && urgency="${1#*=}" || { shift; urgency="$1"; }
process_urgency "$urgency"
;;
-t|--expire-time|--expire-time=*)
[[ "$1" = --expire-time=* ]] && EXPIRE_TIME="${1#*=}" || { shift; EXPIRE_TIME="$1"; }
;;
-f|--force-expire)
FORCE_EXPIRE=yes
;;
-a|--app-name|--app-name=*)
[[ "$1" = --app-name=* ]] && APP_NAME="${1#*=}" || { shift; APP_NAME="$1"; }
;;
-i|--icon|--icon=*)
[[ "$1" = --icon=* ]] && ICON="${1#*=}" || { shift; ICON="$1"; }
;;
-c|--category|--category=*)
[[ "$1" = --category=* ]] && category="${1#*=}" || { shift; category="$1"; }
process_category "$category"
;;
-h|--hint|--hint=*)
[[ "$1" = --hint=* ]] && hint="${1#*=}" || { shift; hint="$1"; }
process_hint "$hint"
;;
-o | --action | --action=*)
[[ "$1" == --action=* ]] && action="${1#*=}" || { shift; action="$1"; }
process_action "$action"
;;
-d | --default-action | --default-action=*)
[[ "$1" == --default-action=* ]] && default_action="${1#*=}" || { shift; default_action="$1"; }
process_special_action default "$default_action"
;;
-l | --close-action | --close-action=*)
[[ "$1" == --close-action=* ]] && close_action="${1#*=}" || { shift; close_action="$1"; }
process_special_action close "$close_action"
;;
-p|--print-id)
PRINT_ID=yes
;;
-r|--replace|--replace=*)
[[ "$1" = --replace=* ]] && REPLACE_ID="${1#*=}" || { shift; REPLACE_ID="$1"; }
;;
-R|--replace-file|--replace-file=*)
[[ "$1" = --replace-file=* ]] && filename="${1#*=}" || { shift; filename="$1"; }
if [[ -s "$filename" ]]; then
REPLACE_ID="$(< $filename)"
fi
STORE_ID="$filename"
;;
-s|--close|--close=*)
[[ "$1" = --close=* ]] && close_id="${1#*=}" || { shift; close_id="$1"; }
notify_close "$close_id"
exit $?
;;
--)
positional=yes
;;
*)
process_posargs "$1"
;;
esac
shift
done
# urgency is always set
HINTS=("$(make_hint byte urgency "$URGENCY")" "${HINTS[@]}")
if [[ "$SUMMARY_SET" = n ]] ; then
help
exit 1
else
notify
fi