1 files changed, 42 insertions, 0 deletions
diff --git a/include/index.h b/include/index.h
new file mode 100644
index 000000000..719b0266b
--- /dev/null
+++ b/include/index.h
@@ -0,0 +1,42 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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, or (at your option) any later
+version.
+
+groff 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 groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define INDEX_MAGIC 0x23021964
+#define INDEX_VERSION 1
+
+struct index_header {
+  int magic;
+  int version;
+  int tags_size;
+  int table_size;
+  int lists_size;
+  int strings_size;
+  int truncate;
+  int shortest;
+  int common;
+};
+
+struct tag {
+  int filename_index;
+  int start;
+  int length;
+};
+
+unsigned hash(const char *s, int len);