mybin

mutt_bgrun (3872B)

---

 #!/bin/sh
 # @(#) mutt_bgrun $Revision: 1.4 $
 
 #   mutt_bgrun - run an attachment viewer from mutt in the background
 #   Copyright (C) 1999-2002 Gary A. Johnson
 #
 #   This program is free software; you can redistribute it and/or modify
 #   it under the terms of the GNU General Public License as published by
 #   the Free Software Foundation; either version 2 of the License, or
 #   (at your option) any later version.
 #
 #   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.
 
 # SYNOPSIS
 #	mutt_bgrun viewer [viewer options] file
 #
 # DESCRIPTION
 #	Mutt invokes external attachment viewers by writing the
 #	attachment to a temporary file, executing the pipeline specified
 #	for that attachment type in the mailcap file, waiting for the
 #	pipeline to terminate, writing nulls over the temporary file,
 #	then deleting it.  This causes problems when using graphical
 #	viewers such as qvpview and acroread to view attachments. 
 #
 #	If qvpview, for example, is executed in the foreground, the mutt
 #	user interface is hung until qvpview exits, so the user can't do
 #	anything else with mutt until he or she finishes reading the
 #	attachment and exits qvpview.  This is especially annoying when
 #	a message contains several MS Office attachments--one would like
 #	to have them all open at once. 
 #
 #	If qvpview is executed in the background, it must be given
 #	enough time to completely read the file before returning control
 #	to mutt, since mutt will then obliterate the file.  Qvpview is
 #	so slow that this time can exceed 20 seconds, and the bound is
 #	unknown.  So this is again annoying. 
 #
 #	The solution provided here is to invoke the specified viewer
 #	from this script after first copying mutt's temporary file to
 #	another temporary file.  This script can then quickly return
 #	control to mutt while the viewer can take as much time as it
 #	needs to read and render the attachment. 
 #
 # EXAMPLE
 #	To use qvpview to view MS Office attachments from mutt, add the
 #	following lines to mutt's mailcap file.
 #
 #	application/msword;             mutt_bgrun qvpview %s
 #	application/vnd.ms-excel;       mutt_bgrun qvpview %s
 #	application/vnd.ms-powerpoint;  mutt_bgrun qvpview %s
 #
 # AUTHOR
 #	Gary A. Johnson
 #	<garyjohn@spk.agilent.com>
 #
 # ACKNOWLEDGEMENTS
 #	My thanks to the people who have commented on this script and
 #	offered solutions to shortcomings and bugs, especially Edmund
 #	GRIMLEY EVANS <edmundo@rano.org> and Andreas Somogyi
 #	<aso@somogyi.nu>.
 
 prog=${0##*/}
 
 # Check the arguments first.
 
 if [ "$#" -lt "2" ]
 then
     echo "usage: $prog viewer [viewer options] file" >&2
     exit 1
 fi
 
 # Separate the arguments.  Assume the first is the viewer, the last is
 # the file, and all in between are options to the viewer.
 
 viewer="$1"
 shift
 
 while [ "$#" -gt "1" ]
 do
     options="$options $1"
     shift
 done
 
 file=$1
 
 # Create a temporary directory for our copy of the temporary file.
 #
 # This is more secure than creating a temporary file in an existing
 # directory.
 
 tmpdir=~/temp/$LOGNAME$$
 umask 077
 mkdir "$tmpdir" || exit 1
 tmpfile="$tmpdir/${file##*/}"
 
 # Copy mutt's temporary file to our temporary directory so that we can
 # let mutt overwrite and delete it when we exit.
 
 cp "$file" "$tmpfile"
 
 # Run the viewer in the background and delete the temporary files when done. 
 # add some grace time to reload the file with a different encoding in fx
 
 (
     "$viewer" $options "$tmpfile"
     sleep 30
     rm -f "$tmpfile"
     rmdir "$tmpdir"
 ) &