#!/bin/sh
#
# $Id$
#
# Send multiples files and/or directories as a tar/compressed
# image, in a MIME message.
#

DELAY=0
FROM=

# compression method (none, gzip or compress)
METHOD=none
# compression filter
COMPRESS=cat
# uncompression filter
UNCOMPRESS=cat
# compression description to append to content-type
CONVERSION=

# default compression method based on installed software
# prefer compress over gzip for backward compatibility
if command -v compress >/dev/null 2>&1 ; then
    METHOD=compress
elif command -v gzip >/dev/null 2>&1 ; then
    METHOD=gzip
fi

# handle command-line options to override compression method and delay
while [ $# -gt 3 ]; do
    case "$1" in
        -gzip) METHOD=gzip
	       shift
	       ;;
	-compress) METHOD=compress
	           shift
		   ;;
        -none) METHOD=none
	       shift
	       ;;
	-*) DELAY="`echo $1 | sed -e 's%-%%'`"
	    shift
	    ;;
	*) break
	   ;;
    esac
done

# set variables based on chosen compression method
if [ $METHOD = compress ]; then
    COMPRESS=compress
    UNCOMPRESS=uncompress
    CONVERSION="; x-conversions=compress"
elif [ $METHOD = gzip ]; then
    COMPRESS="gzip -c"
    UNCOMPRESS="gzip -dc"
    CONVERSION="; x-conversions=gzip"
fi

if [ ! -z "$PERSON" ]; then
    FROM="-from $PERSON"
fi

if [ $# -lt 3 ]; then
    echo 'usage: sendfiles: "mailpath" "subject-string" directory-or-file ...' 1>&2
    exit 1;
fi

mailpath="$1"
echo "mailpath = $mailpath" 1>&2
shift

subject="$1"
echo "subject-string = $subject" 1>&2
shift

echo "files = $*" 1>&2

tar cvf - "$@" | $COMPRESS | \
    %libdir%/viamail -to "$mailpath" -subject "$subject" \
	-parameters "type=tar$CONVERSION" \
	-comment "extract with $UNCOMPRESS | tar xvpf -" \
	-delay "$DELAY" \
	-verbose $FROM