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xxxxxxxxxx/*----------------------------------------------------------------------------* getrc: get the value of the specified AIPS++ resource*-----------------------------------------------------------------------------** Copyright (C) 1992-2007* Associated Universities, Inc. Washington DC, USA.** 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., 675 Mass Ave, Cambridge, MA 02139, USA.** Correspondence concerning AIPS++ should be addressed as follows:* Internet email: aips2-request@nrao.edu.* Postal address: AIPS++ Project Office* National Radio Astronomy Observatory* 520 Edgemont Road* Charlottesville, VA 22903-2475 USA**-----------------------------------------------------------------------------* getrc gets the value of the specified AIPS++ resource from the aipsrc* databases. These are searched in the following sequence:** ~/.aipsrc* $AIPSROOT/.aipsrc* $AIPSHOST/aipsrc* $AIPSSITE/aipsrc* $AIPSARCH/aipsrc** It is not an error for any of the aipsrc files to be absent or empty.** Options:* -i Ignore ~/.aipsrc* -v Verbose mode.** Exit status:* 0: Success, value returned on stdout.* 1: Usage error.* 2: CASAPATH not defined.* 3: HOME not defined.* 4: Invalid regular expression.* 5: Pattern not matched.** Original: 1992/03/05 by Mark Calabretta, ATNF* $Id$*---------------------------------------------------------------------------*/regex_t expbuf;