#!/usr/bin/env bash
#
# /usr/local/bin/md5
#
#
# Description:
#   Dirty hack to get "md5" (OS X style) onboard. Linux have "md5sum",
#   so as a wrapper &/or to use with other scripts as a layer.
#

# Just in case...
if [[ ! `type md5sum 2>/dev/null` ]]; then
	echo "'md5sum' is not installed. Aborting...";
	exit;
fi

# What mode?
case $1 in

	# OS X man page:
	# -s string
	#         Print a checksum of the given string.
	-s)
		shift;
		_text="$1"
		_md5=$(echo -n "$1" | md5sum -t | awk '{ print $1 }');
		echo "MD5 (\"$_text\") = $_md5";
		;;

	# OS X man page:
	# -q      Quiet mode - only the checksum is printed out.  Overrides the -r
	#         option.
	-q)
		shift;
		md5sum $@ | awk '{ print $1 }';
		;;

	# OS X man page:
	# -r      Reverses the format of the output.  This helps with visual diffs.
	#         Does nothing when combined with the -ptx options.
	#
	# Output is same as md5sum --text
	-r)
		shift;
		md5sum $@;
		;;

	# Linux man page:
	# --tag  create a BSD-style checksum
	*)
		md5sum --tag $@
		;;
esac

# Bye-bye...
exit;