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|
#!/bin/bash
source ~/.config/herbstluftwm/config_vars
acc=0
in="first"
prompt="calc:"
pi="3.1415926535897932384626433832795028841971694"
e="2.7182818284590452353602874713526624977572471"
# check first word for special commands
command_check() {
case "$(echo $1 | cut -d ' ' -f 1)" in
"y")
echo "$2" | tr -d '~' | xclip -selection clipboard
return 1
;;
"yank")
echo "$2" | tr -d '~' | xclip -selection clipboard
return 1
;;
*)
return 0
;;
esac
}
while [ "$in" != "" ]; do
in=$(echo "" | dmenu -fn $efont -q -h $bheight \
-nb $bg_normal -nf $fg_normal \
-sb $bg_focus -sf $fg_focus -p "$prompt")
if [[ $(command_check "$in" "$acc") -eq 1 ]]; then
break
fi
# replace "ans" with the previous value
in=$(echo $in | sed -e "s/ans/$acc/g")
out=$(echo "pi=$pi; e=$e; $acc $in" | calc -p 2>&1)
if [ "${?#0}" != "" ]; then
out=$(echo "$out" | tr -d "\n")
if [ "$out" = "Missing operator" ]; then
out=$(echo "pi=$pi; e=$e; $in" | calc -p 2>&1)
if [ "${?#0}" != "" ]; then
out=$(echo "$out" | tr -d "\n")
prompt="calc: ($acc) err: $out"
else
acc=$out
prompt="calc: ($acc)"
fi
else
out=$(echo "$out" | tr -d "\n")
prompt="calc: ($acc) err: $out"
fi
fi
done
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