From 547c9fe458915a9e51c46c0e47e4b340af149c0f Mon Sep 17 00:00:00 2001
From: Christian Heller <c.heller@plomlompom.de>
Date: Fri, 21 Mar 2025 14:28:32 +0100
Subject: [PATCH] Improve volume setting script.
---
testing/home/desktop/.local/bin/vol | 54 ++++++++++++++++++++++++++---
1 file changed, 49 insertions(+), 5 deletions(-)
diff --git a/testing/home/desktop/.local/bin/vol b/testing/home/desktop/.local/bin/vol
index 80f427d..2872d91 100755
--- a/testing/home/desktop/.local/bin/vol
+++ b/testing/home/desktop/.local/bin/vol
@@ -1,8 +1,52 @@
#!/bin/sh
-if [ "$1" = "m" ]; then
- pacmd set-sink-mute 0 1
-elif [ "$1" = "u" ]; then
- pacmd set-sink-mute 0 0
+set -e
+
+MAX_LOUDNESS=150
+
+BIN_NAME="$(basename $0)"
+FLAG_HELP_SHORT='-h'
+FLAG_HELP_LONG='--help'
+
+print_usage() {
+ echo "Usage: ${BIN_NAME} [${FLAG_HELP_SHORT}] [${FLAG_HELP_LONG}] [LOUDNESS]"
+ echo "Set audio volume, or (if called without any arguments) toggle audio device muteness.\n"
+ echo "Available arguments (of which at most one may be used):\n"
+ echo " LOUDNESS audio volume to set (as percentage, must be integer)"
+ echo " ${FLAG_HELP_SHORT}, ${FLAG_HELP_LONG} display this help and exit"
+}
+
+error_exit() {
+ echo "Aborting due to $1\n"
+ print_usage
+ exit 1
+}
+
+toggle_mute() {
+ if [ "$(pactl get-sink-mute 0)" = "Mute: no" ]; then
+ MUTE_BOOL=1
+ else
+ MUTE_BOOL=0
+ fi
+ pacmd set-sink-mute 0 "${MUTE_BOOL}"
+}
+
+set_vol_percentage() {
+ AT_FULL=65536
+ pacmd set-sink-volume 0 $(calc "($1 * ${AT_FULL} // 100)")
+}
+
+N_MAX_ARGS=1
+if [ "$#" -gt "${N_MAX_ARGS}" ]; then
+ error_exit "number of arguments greater ${N_MAX_ARGS}"
+elif [ -z "$1" ]; then
+ toggle_mute
+elif [ -z "$(echo -n $1 | sed 's/[0-9]*//g')" ]; then
+ if [ "$1" -gt "${MAX_LOUDNESS}" ]; then
+ error_exit "demand for unreasonably high loudness: $1."
+ fi
+ set_vol_percentage "$1"
+elif [ "$1" = "$FLAG_HELP_SHORT" ] || [ "$1" = "$FLAG_HELP_LONG" ]; then
+ print_usage
else
- pacmd set-sink-volume 0 $(calc "($1 * 65536 // 100)")
+ error_exit "unrecognized argument: $1"
fi
--
2.30.2