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# -*- perl -*-
sub usage {
print STDERR "usage: $0 -oOutputFile PARM=value ...\n";
print STDERR " where acceptable PARM values are:\n";
print STDERR "\t", join(' ', @parms), "\n";
exit(1);
}
%parm = ();
sub run {
my $arg;
my $outfile;
my %allowed_parms = ();
foreach $arg (@parms) { $allowed_parms{$arg} = 1; }
foreach $arg (@ARGV) {
if ($arg =~ /^-o./) {
if (defined $outfile) {
die "$0: Output file specified multiple times\n";
}
$outfile = substr($arg, 2);
} else {
my @words = split '=', $arg;
if ($#words != 1) {
print STDERR "$0: $arg : #words = $#words\n";
&usage;
}
if (!defined $allowed_parms{$words[0]}) {
print STDERR "$0: Unknown parameter $words[0]\n";
&usage;
}
$parm{$words[0]} = $words[1];
}
}
my $p;
my $subst = "";
#print "Keys defined: ", join(' ', keys %parm), "\n";
foreach $p (@parms) {
if (!defined $parm{$p}) {
die "$0: No value supplied for parameter $p\n";
}
# XXX More careful quoting of supplied value!
$subst .= "\t\$a =~ s|<$p>|$parm{$p}|go;\n";
}
$subst = "sub do_substitution {\n"
. "\tmy(\$a) = \@_;\n"
. $subst
. "\treturn \$a;\n"
. "}\n"
. "1;";
eval $subst || die;
if (defined $outfile) {
open OUTFILE, ">$outfile" || die;
} else {
print STDERR "$0: No output file specified.\n";
&usage;
}
print OUTFILE "/*\n";
print OUTFILE " * This file is generated, please don't edit it.\n";
print OUTFILE " * script: $0\n";
print OUTFILE " * args:\n *\t", join("\n *\t", @ARGV), "\n";
print OUTFILE " * The rest of this file is copied from a template, with\n";
print OUTFILE " * substitutions. See the template for copyright info.\n";
print OUTFILE " */\n";
while (<DATA>) {
print OUTFILE &do_substitution($_);
}
close OUTFILE;
exit (0);
}
1;
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