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#!/usr/bin/env bash
# ==================================================
# KoolDots (2026)
# Project URL: https://github.com/LinuxBeginnings
# License: GNU GPLv3
# SPDX-License-Identifier: GPL-3.0-or-later
# ==================================================
# /* Calculator (using qalculate) and rofi */
# /* Submitted by: https://github.com/JosephArmas */
rofi_theme="${XDG_CONFIG_HOME:-$HOME/.config}/rofi/config-calc.rasi"
# Dependency checks
for cmd in rofi qalc wl-copy; do
if ! command -v "$cmd" >/dev/null 2>&1; then
if command -v notify-send >/dev/null 2>&1; then
notify-send -u critical "RofiCalc" "Missing required dependency: $cmd"
else
echo "Error: Missing required dependency: $cmd" >&2
fi
exit 1
fi
done
CALC_LOCKFILE="/tmp/roficalc-${UID:-0}.pid"
if [[ -f "$CALC_LOCKFILE" ]]; then
oldpid="$(cat "$CALC_LOCKFILE" 2>/dev/null || true)"
if [[ -n "$oldpid" ]] && kill -0 "$oldpid" 2>/dev/null; then
kill "$oldpid" 2>/dev/null || true
fi
rm -f "$CALC_LOCKFILE" 2>/dev/null || true
fi
printf '%d' "$$" > "$CALC_LOCKFILE" 2>/dev/null || true
trap 'rm -f "$CALC_LOCKFILE" 2>/dev/null' EXIT INT TERM
# main function
calc_result=""
result=""
while true; do
mesg_args=()
if [[ -n "$result" || -n "$calc_result" ]]; then
mesg_args=(-mesg "$result = $calc_result")
fi
result=$(
rofi -i -dmenu \
-config "$rofi_theme" \
"${mesg_args[@]}"
)
if [ $? -ne 0 ]; then
exit 0
fi
if [ -n "$result" ]; then
calc_result=$(qalc -t "$result")
echo "$calc_result" | wl-copy
fi
done
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