opusbook4ka

#!/bin/bash
# nb: the swp file that editscript relies on is provided by nano

scriptname="$(realpath $0)"
pidfile="/tmp/.opus.book.pids"

editscript(){
  local scriptname script path swp; scriptname=$(realpath "$0" 2>/dev/null); script="${scriptname##*/}"; path="${scriptname%/*}"; swp="$path/.$script.swp"
     [[ ! -e "$swp" ]] && printf "\n\n%s\n\n" "$swp" && (/usr/bin/nano "$scriptname") && exit
     printf "\n%s is already being edited.\n%s exists; try fg or look in another window.\n" "$scriptname" "$swp"; exit ;}

pause(){ read -p "$*" ; }


breakout(){
  while IFS= read -r pid
    do
      if [[ "$pid" == *opus.book* ]] || [[ "$pid" == *ffmpeg* ]]
        then
          echo "${pid% pts*}" >> "$pidfile"
      fi
    done< <(ps --tty $(tty) Sf)

  while IFS= read -r killpid
    do
      echo "kill -9 $killpid"
      kill -9 "$killpid" 2>/dev/null
    done < "$pidfile" ; }


[[ "$1" == @(edit|e|nano|-e|-E) ]] && editscript

[[ -n "$1" ]] && pidfile="$1"

breakout
rm "$pidfile"
sleep 0.5s
breakout
rm "$pidfile"
ps

printf '\n$s done.\n\n' "$scriptname"