#!/usr/bin/perl -w

my ${exec_prefix};
my ${prefix};

${prefix}="@prefix@";
${exec_prefix}="@exec_prefix@";
while ($f = shift @ARGV) {

	if (-x "/bin/mktemp") { 
		$TEMP = `/bin/mktemp $f.$$.XXXXXX`;
		die 'Cannot make temporary file $TEMP' if($?);
		chomp $TEMP;
	} else {
		$XXXXXX = rand;
		$TEMP = "$f.$$.$XXXXXX";
	}

	open(IN,"<$f.in");
	open(OUT,">$TEMP") || die 'Cannot make temporary file $TEMP';

	while (<IN>) {
		s|\@nsca_user\@|@nsca_user@|g;
		s|\@nsca_grp\@|@nsca_grp@|g;
		s|\@nsca_port\@|@nsca_port@|g;
		s|\@log_facility\@|@log_facility@|g;
		s|\@libexecdir\@|@libexecdir@|g; # put all --with-vars before directories
		s|\@localstatedir\@|@localstatedir@|g;
		s|\@sysconfdir\@|@sysconfdir@|g;
		s|\@datadir\@|@datadir@|g;
		s|\@sbindir\@|@sbindir@|g;
		s|\@bindir\@|@bindir@|g;
		s|\$\{exec_prefix\}|@exec_prefix@|g; # must be next to last
		s|\$\{prefix\}|@prefix@|g; # must be last
		print OUT $_;
	}

	close IN;
	close OUT;

	if ((! -e $f) || (`diff $f $TEMP`)) {
		`mv $TEMP $f`;
	} else {
	         unlink $TEMP;
	}

}
