nix-configs/scripts/desktop/menu-qalc.sh
2022-09-02 20:28:50 +02:00

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# Copy-pasted from https://raw.githubusercontent.com/BarbUk/menu-qalc/master/%3D
# I hope this is even legal but OH WELL
# https://github.com/onespaceman/menu-calc
# Calculator for use with rofi/dmenu(2)
# Copying to the clipboard requires xclip
usage() {
echo "$(tput bold)menu-calc$(tput sgr0)"
echo "A calculator for Rofi/dmenu(2)"
echo
echo "$(tput bold)Usage:$(tput sgr0)"
echo " = 4+2"
echo " = (4+2)/(4+3)"
echo " = 4^2"
echo " = sqrt(4)"
echo " = c(2)"
echo
echo "$(tput bold)Force Rofi/dmenu(2):$(tput sgr0)"
echo "By default, if rofi exists, it will be used. To force menu-calc to"
echo "use one or the other, use the --dmenu argument"
echo
echo " = --dmenu=<dmenu_executable>"
echo
echo "$(tput bold)Passing arguments to Rofi/dmenu(2):$(tput sgr0)"
echo "Any parameters after ' -- ' will be passed to Rofi/dmenu(2)."
echo
echo " = -- <Rofi/dmenu(2) args>"
echo
echo "The answer can be copied to the clipboard and used for further calculations inside (or outside) Rofi/dmenu."
echo
echo "If launched outside of Rofi/dmenu the expression may need quotation marks."
exit
}
# Process CLI parameters
for var in "$@"
do
case $var in
-h|--help) usage ;;
-d=*|--dmenu=*)
menu=$(echo $var | cut -d'=' -f 2);
;;
--) break ;;
esac
done
# Grab the answer
if [ -n "$1" ]; then
answer=$(echo "$1" | qalc +u8 -color=never -terse | awk '!/^>/ && !/^$/ {gsub(/^[ \t]+|[ \t]+$/, "", $0); print}')
fi
# Path to menu application
if [ -z "${menu+1}" ]; then
if [[ -n $(command -v rofi) ]]; then
menu="$(command -v rofi)"
elif [[ -n $(command -v dmenu) ]]; then
menu=$(command -v dmenu)
else
>&2 echo "Rofi or dmenu not found"
exit
fi
fi
# If using rofi, add the necessary parameters
if [[ $menu == "rofi" || $menu == $(command -v rofi) ]]; then
menu="$menu -dmenu -lines 3"
elif [[ $menu == "dmenu" || $menu == $(command -v dmenu) ]]; then
menu="$menu ""$DMENU_OPTIONS"
fi
# Determine args to pass to dmenu/rofi
while [[ $# -gt 0 && $1 != "--" ]]; do
shift
done
[[ $1 == "--" ]] && shift
action=$(echo -e "Copy to clipboard\nClear\nClose" | $menu "$@" -p "= $answer")
case $action in
"Clear") $0 ;;
"Copy to clipboard") echo -n "$answer" | xclip -selection clipboard ;;
"Close") ;;
"") ;;
*) $0 "$answer $action" "--dmenu=$menu" "--" "$@" ;;
esac