#!/bin/sh

# Simple script to copy to X11 clipboard (or paste to stdout when -o is given).
# Uses xsel if available, and falls back to xclip. xsel is preferred because
# I found that copying using xclip and pasting into certain textareas (gmail,
# google docs) resulted in all newlines being stripped. But using xsel worked
# correctly.
#
# Similarly, we configure neovim to use xsel if available.
#
# See also: https://github.com/neovim/neovim/issues/5853

paste=
while true; do
  case "$1" in
    -o|--output) paste=yes; shift; ;;
    -h|--help) usage; exit 0 ;;
    -*) usage; exit 1 ;;
    *) break
  esac
done

if cmd-exists xsel; then
  if [ -z "$paste" ]; then
    xsel -i --clipboard
  else
    xsel -o --clipboard
  fi
elif cmd-exists xclip; then
  if [ -z "$paste" ]; then
    xclip -selection clipboard
  else
    xclip -o -selection clipboard
  fi
else
  echo "neither xsel (preferred) nor xclip are installed" >&2
  exit 1
fi