Initial commit

scripts/WaybarCava.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+# WaybarCava.sh — safer single-instance handling, cleanup, and robustness
+# Original concept by JaKooLit; this variant focuses on lifecycle hardening.
+
+set -euo pipefail
+
+# Ensure cava exists
+if ! command -v cava >/dev/null 2>&1; then
+  echo "cava not found in PATH" >&2
+  exit 1
+fi
+
+# 0..7 → ▁▂▃▄▅▆▇█
+bar="▁▂▃▄▅▆▇█"
+dict="s/;//g"
+bar_length=${#bar}
+for ((i = 0; i < bar_length; i++)); do
+  dict+=";s/$i/${bar:$i:1}/g"
+done
+
+# Single-instance guard (only kill our previous instance if it’s still alive)
+RUNTIME_DIR="${XDG_RUNTIME_DIR:-/tmp}"
+pidfile="$RUNTIME_DIR/waybar-cava.pid"
+if [[ -f "$pidfile" ]]; then
+  oldpid="$(cat "$pidfile" || true)"
+  if [[ -n "$oldpid" ]] && kill -0 "$oldpid" 2>/dev/null; then
+    kill "$oldpid" 2>/dev/null || true
+    sleep 0.1 || true
+  fi
+fi
+printf '%d' $$ >"$pidfile"
+
+# Unique temp config + cleanup on exit
+config_file="$(mktemp "$RUNTIME_DIR/waybar-cava.XXXXXX.conf")"
+cleanup() { rm -f "$config_file" "$pidfile"; }
+trap cleanup EXIT INT TERM
+
+cat >"$config_file" <<EOF
+[general]
+framerate = 30
+bars = 10
+
+[input]
+method = pulse
+source = auto
+
+[output]
+method = raw
+raw_target = /dev/stdout
+data_format = ascii
+ascii_max_range = 7
+EOF
+
+# Stream cava output and translate digits 0..7 to bar glyphs
+exec cava -p "$config_file" | sed -u "$dict"