usage: Print metavariables in SHOUTY letters.

[sw-tools] / perl / SWConfig.pm.in

# -*-perl-*-
#
# $Id: SWConfig.pm.in,v 1.2 2004/04/08 01:52:19 mdw Exp $
#
# Exports configuration variables
#
# (c) 1999 EBI
#

#----- Licensing notice -----------------------------------------------------
#
# This file is part of sw-tools.
#
# sw-tools 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.
# 
# sw-tools 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 sw-tools; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#----- Package preamble -----------------------------------------------------

package SWConfig;
use IO;
use Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(%C);

#----- Configuration variables ----------------------------------------------

%C = ();
$C{pkg} = '@PACKAGE@';
$C{version} = '@VERSION@';
$C{prefix} = '@prefix@';
$C{datadir} = '@datadir@';
$C{index} = '${prefix}/sw-index';
$C{doc} = '${prefix}/doc';

foreach my $k (qw(datadir index doc)) {
  $C{$k} =~ s/\$\{(\w+)\}/$C{$1}/eg;
}

#----- Read a configuration file --------------------------------------------

if (my $fh = IO::File->new("$C{datadir}/sw.conf")) {
  LINE: while (my $line = $fh->getline()) {
    chomp($line);
    next LINE if $line =~ /^\s*\#/ || $line =~ /^\s*$/;
    my ($k, $v) = split(/\s*=\s*|\s+/, $line, 2);
    $v =~ s/\$\{(\w+)\}/$C{$1}/eg;
    $C{$k} = $v;
  }
}

#----- That's all, folks ----------------------------------------------------

1;