variety-loop

#!/bin/bash

(( $# )) && echo arguments are ignored
echo 'Useage: variety -<input>
  --* -> read more then 1 char
  -q  -> --quit  (Also quits from ^D)
  -n  -> --next
  -p  -> --previous
  -t  -> --trash
  -f  -> --favorite
'
# trap KILL?  'variety -q'   ?todo?
{ pidof variety || variety --pause; } &>/dev/null & # in case if is not running
eof=$'\4' # end of input ( Ctrl+D = ^D )
er(){ printf "\\E[10Cvariety err code: $?\\E[28D\\E[${#?}D"; }

while IFS= read -p 'variety -' -n 1 i; do  case $i in
    [nptf]) { variety -"$i" &>/dev/null || er; } &;;
    -|["\'\""]) read j || break; eval "variety -$i$j || er";;

    q|"$eof") break;;
    [$'\E\t ']|'') read -t 0.1 -s -p $'\r                  \r' _; continue;; # ignore arow + special keys
    *) printf '\n  invalid option: %s' "${i@Q}";;
esac; echo;  done
echo

variety --quit &>/dev/null