emacsclient script

#!/bin/bash

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# note: emacsclient args
# -c: make new frame
# -n: don't block terminal command was run in
# -a: with an empty string, starts emacs daemon if it's not already running

FRAME=true
# query emacs to see if we've got a frame already
emacsclient -n -e "(if (> (length (frame-list)) 1) 't)" | grep -q t
if [ "$?" = "1" ];
then
  FRAME=false
fi

FILE=""
if [ -t 0 ]; then
  # running interactively
  FILE=$@
else
  # probably being run via a pipe (e.g. echo filename > SCRIPT_NAME)
  read -r line
  FILE=$line
fi

if [ -z "$FILE" ]; then
  # no filename given
  if [[ "$FRAME" == true ]]; then
    emacsclient -ne "(make-frame)"
  else
    emacsclient -cna ""
  fi
else
  # given a filename
  if [[ "$FRAME" == true ]]; then
    emacsclient -na "" "$FILE"
  else
    emacsclient -cna "" "$FILE"
  fi
fi