#!/bin/sh

# grepm - a wrapper for grepmail utilizing mutt

# 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})."