#!/bin/bash
# A tempfile wrapper for mktemp
# Note: If you can, avoid using tempfile and use mktemp instead.
#       This wrapper is provided for compatibility since some scripts use
#       tempfile. If possible, the best solution is to patch the scripts
#       to use mktemp.
#
# Copyright (c) Tushar Teredesai <tush@yahoo.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

# Usage info
usage()
{
	echo "Usage: tempfile [OPTION]"
	echo
	echo "Create a temporary file in a safe manner."
	echo "This version is a wrapper that invokes mktemp."
	echo "NOTE: Do not use tempfile in your scripts."
	echo "      Use mktemp instead."
	echo
	echo "[-d|--directory] DIR -> place temporary file in DIR"
	echo "[-p|--prefix] PREFIX -> ignored"
	echo "[-s|--suffix] SUFFIX -> ignored"
	echo "[-n|--name] NAME -> ignored"
	echo "[-m|--mode] MODE -> ignored"
	echo "--version -> output version information and exit"
}

# parse all arguments
while [ $# != 0 ]
do
	case "$1" in
	# -d for tempfile is equivalent to -p for mktemp
	-d|--directory)
		dir="$2"
		shift 2
	;;
	--directory=*)
		dir="${1#--directory=}"
		shift 1
	;;
	-d*)
		dir="${1#-d}"
		shift 1
	;;
	# The following switches are ignored.
	-p|--prefix|-s|--suffix|-n|--name|-m|--mode)
		shift 2
	;;
	-p*|--prefix=*|-s*|--suffix=*|-n*|--name=*|-m*|--mode=*)
		shift 1
	;;
	# --version for tempfile is equivalent to -V for mktemp
	--version)
		echo "tempfile 1.0 (`mktemp -V 2>/dev/null`)"
		exit 0
	;;
	# Unknown switch
	*)
		usage
		exit 1
	;;
	esac
done

# Use the dir if $TMPDIR is not set.
if [ -z "$TMPDIR" -a ! -z "$dir" ]
then
	export TMPDIR="$dir"
fi
# Execute mktemp with proper arguments
# the -t behaviour of mktemp is the default for tempfile
exec mktemp -t