keratin

#!/bin/bash

LC_COLLATE=C
LOGDIR="/tmp"
LOGFILE="$LOGDIR/keratin.log"
CACHE_DIR="$HOME/.local/share/keratin"
P="keratin"

first_selection() {
  declare -A selections
  ordered_selections=()

  files=("$CACHE_DIR/"*)

  for (( i=${#files[@]}-1; i>=0; i-- )); do
    file=${files[$i]}

    first_line=$(sed -n '/./{p;q}' "$file")

    lines=$(wc -l "$file")
    lines=${lines%% *}

    if (( lines > 1 )); then
      first_line+=" ($lines lines)"
    fi

    if
      [ -z "$first_line" ]
    then
      rm $file
    else
      ordered_selections+=("$first_line")
      selections[$first_line]=$file
    fi
  done

  echo "${selections[${ordered_selections[0]}]}"
}

dmenu_options() {
  declare -A selections
  ordered_selections=()

  files=("$CACHE_DIR/"*)

  for (( i=${#files[@]}-1; i>=0; i-- )); do
    file=${files[$i]}

    first_line=$(sed -n '/./{p;q}' "$file")

    lines=$(wc -l "$file")
    lines=${lines%% *}

    if (( lines > 1 )); then
      first_line+=" ($lines lines)"
    fi

    if
      [ -z "$first_line" ]
    then
      rm $file
    else
      ordered_selections+=("$first_line")
      selections[$first_line]=$file
    fi
  done

  chosen_line=$(
    printf '%s\n' "${ordered_selections[@]}" | dmenu -l 15 -p $P $FN $NB $NF $SB $SF "$@"
  )

  echo ${selections[$chosen_line]}
}



while test $# -gt 0; do
  case "$1" in
    -h|--help)
      echo "Usage: keratin [OPTION]"
      echo "Dmenu powered clipboard manager for Linux systems."
      echo "Run without any flags to try to access the daemon and copying history."
      echo ""
      echo "  -c, --current         Returns the most recently copied/cut item in the clipboard"
      echo "  -C, --copy            Copies argument to clipboard"
      echo "  -d, --daemon          Start the keratin daemon"
      echo "  -D, --delete          Delete clipboard entry"
      echo "  -fn [font]            Defines the font or font set used for dmenu."
      echo "                          eg. \"fixed\" or \"Monospace-12:normal\" (an xft font)"
      echo "  -h, --help            Print this help guide and exit"
      echo "  -K, --kill-daemon     Stop the keratin daemon"
      echo "  -nb [color]           Defines the normal background color for dmenu."
      echo "                          #RGB, #RRGGBB, and X color names are supported"
      echo "  -nf [color]           Defines the normal foreground color for dmenu"
      echo "  -s, --daemon-status   Stop the keratin daemon"
      echo "  -sb [color]           Defines the selected background color for dmenu"
      echo "  -sf [color]           Defines the selected foreground color for dmenu"
      exit 0
      ;;
    -c|--current)
      if type -p xsel >/dev/null 2>&1; then
	xsel --clipboard
      else
	xclip -o -sel clipboard
      fi
      exit 0
      ;;
    -C|--copy)
      shift
      if type -p xsel >/dev/null 2>&1; then
	echo -n "$1" | xsel -i --clipboard
      else
	echo -n "$1" | xclip -sel clipboard
      fi
      exit 0
      ;;
    -d|--daemon)
      if
	[[ `ps -A | grep keratin-d` == *[^[:blank:]]* ]]
      then
	echo "Daemon already running."
	exit 0
      else
	keratin-d >> $LOGFILE 2>&1 &

	if
	  [[ `ps -A | grep keratin-d` == *[^[:blank:]]* ]]
	then
	  echo "Daemon started."
	  exit 0
	else
	  echo "Unknown error occurred; daemon did not start."
	  exit 1
	fi
      fi
      ;;
    -D|--delete)
      fs=$(first_selection)
      P="DELETION"
      chosen_file=$(dmenu_options)

      rm "$chosen_file"

      if
	[ "$chosen_file" == "$fs" ]
      then
	fs=$(first_selection)

	if type -p xsel >/dev/null 2>&1; then
	  xsel -i --clipboard < "$fs"
	else
	  xclip -sel clipboard < "$fs"
	fi
	rm "$fs"
      fi
      exit 0
      ;;
    -K|--kill-daemon)
      if
	[[ `ps -A | grep keratin-d` == *[^[:blank:]]* ]]
      then
	kill `ps -A | grep keratin-d | awk '{print $1;}'`
	echo "Daemon stopped."
	exit 0
      else
	echo "No daemon running."
	exit 0
      fi
      ;;
    -s|--daemon-status)
      if
	[[ `ps -A | grep keratin-d` == *[^[:blank:]]* ]]
      then
	echo "Daemon running."
	exit 0
      else
	echo "No daemon running."
	exit 0
      fi
      ;;
    -fn)
      shift
      FN="-fn $1"
      shift
      ;;
    -nb)
      shift
      NB="-nb $1"
      shift
      ;;
    -nf)
      shift
      NF="-nf $1"
      shift
      ;;
    -sb)
      shift
      SB="-sb $1"
      shift
      ;;
    -sf)
      shift
      SF="-sf $1"
      shift
      ;;
    *)
      echo "keratin should take no arguments other than accepted flags and accepted
arguements to said flags. Either invalid flags or a disproportionate number of
arguments-to-flags were used."
      exit 1
      ;;
  esac
done

if
  [[ ! `ps -A | grep keratin-d` == *[^[:blank:]]* ]]
then
  echo "Daemon not running; run \"keratin -d\" or \"keratin --daemon\" to correct this."
  exit 1
fi



chosen_file=$(dmenu_options)
[[ $chosen_file ]] || exit 1

if type -p xsel >/dev/null 2>&1; then
  data=$(xsel --clipboard; printf x)
else
  data=$(xclip -o -sel clipboard; printf x)
fi

if
  [ "${data%x}" != "`cat $chosen_file`" ]
then
  if type -p xsel >/dev/null 2>&1; then
    xsel -i --clipboard < "$chosen_file"
  else
    xclip -sel clipboard < "$chosen_file"
  fi

  rm "$chosen_file"
fi