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119 lines
3.5 KiB
Bash
Executable file
119 lines
3.5 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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# Simple script that listens for changes in monitor configuration and performs
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# certain configured actions.
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# Copyright 2024 ItsDrike <me@itsdrike.com>
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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# Place, Suite 330, Boston, MA 02111-1307 USA
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SCRIPTS_DIR="${XDG_CONFIG_HOME:-$HOME/.config}/hyprland-monitord"
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INIT_SCRIPT="$SCRIPTS_DIR/init.sh"
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ADD_SCRIPT="$SCRIPTS_DIR/added.sh"
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REMOVE_SCRIPT="$SCRIPTS_DIR/removed.sh"
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if [ "$#" -ne 0 ]; then
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>&2 echo "CLI arguments are not supported"
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exit 1
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fi
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if [ -z "$HYPRLAND_INSTANCE_SIGNATURE" ]; then
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>&2 echo "Hyprland is not running, IPC not available"
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exit 1
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fi
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SOCKET_PATH="${XDG_RUNTIME_DIR:-/run/user/$UID}/hypr/$HYPRLAND_INSTANCE_SIGNATURE/.socket2.sock"
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# Older versions of hyprland used a different socket path
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# (if someone still actually needs this condition, please for gods sake update)
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if ! [ -S "$SOCKET_PATH" ]; then
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SOCKET_PATH="/tmp/hypr/$HYPRLAND_INSTANCE_SIGNATURE/.socket2.sock"
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fi
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if ! [ -S "$SOCKET_PATH" ]; then
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>&2 echo "Hyprland IPC socket2 file wasn't found!"
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exit 1
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fi
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# Will block and listen to the hyprland socket messages, outputting them.
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# Generally used like: hyprland_ipc | while read line; do handle $line; done
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# Read <https://wiki.hyprland.org/IPC/> for output format and available events
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# Note: requires openbsd version of netcat.
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# $1 - Optional event to listen for (no event filtering will be done if not provided)
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hyprland_ipc() {
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if [ "$#" -eq 0 ]; then
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nc -U "$SOCKET_PATH" | while read -r line; do
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echo "$line"
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done
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else
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nc -U "$SOCKET_PATH" | while read -r line; do
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if echo "$line" | grep -E "$1>>" >/dev/null; then
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echo "$line" | awk -F '>>' '{print $2}'
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fi
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done
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fi
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}
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# Function ran whenever the monitoraddedv2 event is emitted
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handle_add() {
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local monitor_id
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local monitor_name
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local monitor_description
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monitor_id="$(echo "$1" | cut -d',' -f1)"
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monitor_name="$(echo "$1" | cut -d',' -f2)"
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monitor_description="$(echo "$1" | cut -d',' -f3)"
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>&2 echo "Monitor added: $monitor_id;$monitor_name;$monitor_description"
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if [ -f "$ADD_SCRIPT" ]; then
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"$ADD_SCRIPT" "$monitor_id" "$monitor_name" "$monitor_description"
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else
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>&2 echo "Add script file not found ($ADD_SCRIPT)"
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fi
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}
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# Function ran whenever the monitorremoved event is emitted
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handle_remove() {
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local monitor_name
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monitor_name="$1"
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>&2 echo "Monitor removed: $monitor_name"
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if [ -f "$REMOVE_SCRIPT" ]; then
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"$REMOVE_SCRIPT" "$monitor_name"
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else
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>&2 echo "Remove script file not found ($REMOVE_SCRIPT)"
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fi
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}
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>&2 echo "Listening for monitor IPC events"
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if [ -f "$INIT_SCRIPT" ]; then
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"$INIT_SCRIPT"
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else
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>&2 echo "Init script file not found ($INIT_SCRIPT)"
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fi
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hyprland_ipc "monitoraddedv2" | while read -r line; do
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handle_add "$line"
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done &
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hyprland_ipc "monitorremoved" | while read -r line; do
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handle_remove "$line"
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done &
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wait
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