1 files changed, 85 insertions, 0 deletions
diff --git a/doc/misc/docbook-grammars.pl b/doc/misc/docbook-grammars.pl
new file mode 100644
index 0000000..43f47e8
--- /dev/null
+++ b/doc/misc/docbook-grammars.pl
@@ -0,0 +1,85 @@
+#!/usr/bin/perl
+#
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+use warnings;
+use strict;
+use Time::Piece;
+
+if (@ARGV < 2) {
+	print STDERR <<'END';
+usage:
+    perl docbook-options.pl options_file section > section.grammar.xml
+END
+	exit 1;
+}
+
+my $FILE = shift;
+my $SECTION = shift;
+
+open (FH, "<", $FILE) or die "Can't open $FILE";
+
+my $t = Time::Piece->new();
+my $year = $t->year;
+
+print <<END;
+<!--
+ - Copyright (C) 2004-$year  Internet Systems Consortium, Inc. ("ISC")
+ -
+ - This Source Code Form is subject to the terms of the Mozilla Public
+ - License, v. 2.0. If a copy of the MPL was not distributed with this
+ - file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
+
+<!-- Generated by doc/misc/docbook-options.pl -->
+
+<programlisting>
+END
+
+# skip preamble
+my $preamble = 0;
+while (<FH>) {
+	if (m{^\s*$}) {
+		last if $preamble > 0;
+	} else {
+		$preamble++;
+	}
+}
+
+my $display = 0;
+while (<FH>) {
+	if (m{^$SECTION\b}) {
+		$display = 1
+	}
+
+	if (m{// not.*implemented} || m{// obsolete} || m{// test.*only}) {
+		next;
+	}
+
+	s{ // not configured}{};
+	s{ // non-operational}{};
+	s{ // may occur multiple times}{};
+	s{<([a-z0-9_-]+)>}{<replaceable>$1</replaceable>}g;
+	s{^(\s*)([a-z0-9_-]+)\b}{$1<command>$2</command>};
+	s{[[]}{[}g;
+	s{[]]}{]}g;
+	s{        }{\t}g;
+
+	if (m{^\s*$} && $display) {
+		last;
+	}
+	if ($display) {
+		print;
+	}
+}
+
+print <<END;
+</programlisting>
+END