#!/bin/sh

# grepm - a wrapper for grepmail utilizing mutt

# Copyright (C) 1998-1999 Moritz Barsnick <barsnick (at) gmx (dot) net>
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of the GNU General Public License
#    version 2 as published by the Free Software Foundation.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# grepm-0.6
#
# written 1998-11-xx by Moritz Barsnick <barsnick (at) gmx (dot) net>
# updated 1998-12-22:	added "-m" option for grepmail
#			added "exit 1" to trap
# updated 1999-01-04:	added check for empty "mailbox" (don't open mutt)
# 			added messages
#			added umask (to keep others from reading your messages)
# updated 1999-01-19:	added trap for SIGPIPE (any other suggestions?)
# updated 1999-07-05:	added $TMPDIR; we're still subject to races ($TMPFILE
# 			    might exist)
# updated 1999-11-29:	have mutt open the temporary mailbox read-only -
#			    there's no use in editing it anyway


PROGNAME=`basename "$0"`
TMPDIR=${TMPDIR-/tmp}

umask 077

if [ $# -lt 1 ]; then
  echo 1>&2 "Usage: ${PROGNAME} arguments"
  exit 1
fi

TMPFILE="${TMPDIR}/grepmail-output.$$"

# I _would_ check this with "-e", but not all /bin/sh's understand it
# so this is just a kludge

if [ -f ${TMPFILE} -o -d ${TMPFILE} -o -w ${TMPFILE} ]; then
  echo 1>&2 "Temporary file ${TMPFILE} exists for some reason! Aborting."
  exit 1
fi

trap "rm -f ${TMPFILE}; exit 1" 1 2 3 13 15

grepmail -m "$@" > "${TMPFILE}"
if [ `wc -c "${TMPFILE}" | awk '{print $1}'` -gt 0 ]; then
  echo 1>&2 "Calling mutt on results file (${TMPFILE})."
  mutt -R -f "${TMPFILE}"
else
  echo 1>&2 "No matches."
fi

rm -f "${TMPFILE}" && echo 1>&2 "Deleted results file (${TMPFILE})."