roficalc

#!/usr/bin/env bash
# Dependencies: calc, rofi, xclip

# configs
rofiprompt=""
rofiopts="-no-show-match -no-sort -no-bold"
dmenuopts=""
savedir=$HOME/Documents/roficalc
editor=/usr/bin/gvim

# keybinds
addhist="Alt+a"
getval="Alt+c"
edithist="Alt+e"
loadhist="Alt+l"
savehist="Alt+s"
addhistvar="Alt+v"

# colors
hlcolor="Aqua"

# load configs
. "$HOME/.config/rofi/script-configs/roficalc.conf"

_rofi() {
  rofi ${rofiopts} -sep '|' -dmenu -i -p "${rofiprompt}" ${dmenuopts} "$@"
}

_calc() {
  result=$(calc "$@")
  echo $result
}

listsaves() {
  IFS=$'\n'
  allfiles=($(ls $savedir | sed 's/:.*//'))
  unset IFS

  filelist=""
  for idx in "${!allfiles[@]}"
  do
    if [ -z "$filelist" ]; then
      filelist="${allfiles[$idx]}"
    else
      filelist="$filelist|${allfiles[$idx]}"
    fi
  done

  echo $filelist
}

edithist() {
  loadfile=$(listsaves | _rofi -mesg "Edit history")
  val=$?

  case "$val" in
    0)
      if [ "$loadfile" != "" ]; then
        ${editor} $savedir/$loadfile
        exit 0
      fi
      ;;
  esac
}

savehist() {
  savefile=$(listsaves | _rofi -mesg "Save history")
  val=$?

  case "$val" in
    0)
      if [ "$savefile" != "" ]; then
        echo $1 | tr "|" "\n" > $savedir/$savefile
      fi
      ;;
  esac
}

loadhist() {
  loadfile=$(listsaves | _rofi -mesg "Load history")
  val=$?

  case "$val" in
    0)
      if [ "$loadfile" != "" ]; then
        retval=$(cat "$savedir/$loadfile" | tr "\n" "|")
        echo ${retval::-1}
      fi
      ;;
  esac
}

addtohist() {
  if [ -n "$1" ]; then
    echo "$1|$2"
  else
    echo "$2"
  fi
}

valfromvar() {
  retval=$(echo "$1" | cut -d ">" -f2-)
  echo -n $retval
}

main() {
  if [ ! -d $savedir ]; then
    mkdir $savedir
  fi

  while [ 1 == 1 ]
  do
    msg="Result: $lastresult
<span color='${hlcolor}'>${addhist}</span> Add to hist | <span color='${hlcolor}'>${addhistvar}</span> Add to hist (+var) | <span color='${hlcolor}'>${getval}</span> Copy value
<span color='${hlcolor}'>${savehist}</span> Save hist   | <span color='${hlcolor}'>${loadhist}</span> Load hist          | <span color='${hlcolor}'>${edithist}</span> Edit hist"
    input=$(echo $hist | _rofi -mesg "$msg" \
      -kb-custom-1 "${addhist}" -kb-custom-2 "${addhistvar}" -kb-custom-3 "${getval}" \
      -kb-custom-4 "${savehist}" -kb-custom-5 "${loadhist}" -kb-custom-6 "${edithist}")
    val=$?

    case "$val" in
      1) exit 0 ;;
      10)
        if [ "${lastresult:0:1}" == "~" ]; then
          lastresult=${lastresult#"~"}
        fi
        hist=$(addtohist "$hist" "$lastresult")
        ;;
      11)
        var=$(_rofi -mesg "Set a variable for value ${lastresult}")
        val=$?

        if [ "$val" = "0" ]; then
          if [ "${lastresult:0:1}" == "~" ]; then
            lastresult=${lastresult#"~"}
          fi
          hist=$(addtohist "$hist" "$var->$lastresult")
        fi
        ;;
      12)
        valfromvar "$input" | xclip -in -selection clipboard
        ;;
      13) savehist "$hist" ;;
      14) hist=$(loadhist) ;;
      15) edithist ;;
      0)
        lastresult=$(_calc "$input")
        ;;
      esac
  done
}

main