#!/bin/sh
#  Copyright (C) 1994-2016 Altair Engineering, Inc.
#  For more information, contact Altair at www.altair.com.
#   
#  This file is part of the PBS Professional ("PBS Pro") software.
#  
#  Open Source License Information:
#   
#  PBS Pro is free software. You can redistribute it and/or modify it under the
#  terms of the GNU Affero General Public License as published by the Free 
#  Software Foundation, either version 3 of the License, or (at your option) any 
#  later version.
#   
#  PBS Pro 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 Affero General Public License for more details.
#   
#  You should have received a copy of the GNU Affero General Public License along 
#  with this program.  If not, see <http://www.gnu.org/licenses/>.
#   
#  Commercial License Information: 
#  
#  The PBS Pro software is licensed under the terms of the GNU Affero General 
#  Public License agreement ("AGPL"), except where a separate commercial license 
#  agreement for PBS Pro version 14 or later has been executed in writing with Altair.
#   
#  Altair’s dual-license business model allows companies, individuals, and 
#  organizations to create proprietary derivative works of PBS Pro and distribute 
#  them - whether embedded or bundled with other software - under a commercial 
#  license agreement.
#  
#  Use of Altair’s trademarks, including but not limited to "PBS™", 
#  "PBS Professional®", and "PBS Pro™" and Altair’s logos is subject to Altair's 
#  trademark licensing policies.
#

if [ $# -eq 1 ] && [ $1 = "--version" ]; then
   echo pbs_version = 14.1.0
   exit 0
fi

# pbs_remsh might be called in a non-PBS environment causing
# PBS_JOBID and PBS_RSHCOMMAND to not exist. The fix is to pass
# the values to these as arguments to pbs_remsh.

if [ $# -lt 2 ]; then
        echo "Usage: $0 --version"
        echo "Usage: $0 [-j jobid] [-r rshcmd] host [-n] [-l username] command"
        exit 1;
fi

jobid=""
rshcmd=""
while [ $# -gt 1 ]; do
        if [ "XX$1" = "XX-j" ]; then
                shift;
                jobid=$1
                shift;
        elif [ "XX$1" = "XX-r" ]; then
                shift;
                rshcmd=$1
                shift;
        else
                break;
        fi
done

host="$1"
shift

while [ $# -gt 1 ]; do
	if [ "XX$1" = "XX-n" ]; then
		shift;
	elif [ "XX$1" = "XX-l" ]; then
		shift;
		shift;
	else
		break;
	fi
done

if [ ! -z "$jobid" ] ; then
        export PBS_JOBID=$jobid
fi

if [ ! -z "$rshcmd" ] ; then
        export PBS_RSHCOMMAND=$rshcmd
fi

remsh="${PBS_RSHCOMMAND:-rsh} -n"
$remsh "$host" pbs_attach -j "$PBS_JOBID" $*
