Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 158 insertions, 0 deletions

diff --git a/include/avl.h b/include/avl.h
new file mode 100644
index 0000000..0ffc496
--- /dev/null
+++ b/include/avl.h
@@ -0,0 +1,158 @@
+/* avl.h - avl tree definitions */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1993 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+
+#ifndef _AVL
+#define _AVL
+
+#include <ldap_cdefs.h>
+
+/*
+ * this structure represents a generic avl tree node.
+ */
+
+LDAP_BEGIN_DECL
+
+typedef struct avlnode Avlnode;
+
+struct avlnode {
+	void*		avl_data;
+	struct avlnode	*avl_link[2];
+	char		avl_bits[2];
+	signed char		avl_bf;
+};
+
+#define avl_left	avl_link[0]
+#define avl_right	avl_link[1]
+#define avl_lbit	avl_bits[0]
+#define avl_rbit	avl_bits[1]
+
+#ifdef AVL_INTERNAL
+
+#define NULLAVL	((Avlnode *) NULL)
+
+/* balance factor values */
+#define LH 	(-1)
+#define EH 	0
+#define RH 	1
+
+#define avl_bf2str(bf)	((bf) == -1 ? "LH" : (bf) == 0 ? "EH" : (bf) == 1 ? "RH" : "(unknown)" )
+
+/* thread bits */
+#define	AVL_THREAD	0
+#define	AVL_CHILD	1
+
+/* avl routines */
+#define avl_getone(x)	((x) == 0 ? 0 : (x)->avl_data)
+#define avl_onenode(x)	((x) == 0 || ((x)->avl_left == 0 && (x)->avl_right == 0))
+
+#endif /* AVL_INTERNALS */
+
+#define	avl_child(x,dir)	((x)->avl_bits[dir]) == AVL_CHILD ? \
+	(x)->avl_link[dir] : NULL
+#define	avl_lchild(x)	avl_child(x,0)
+#define	avl_rchild(x)	avl_child(x,1)
+
+typedef int		(*AVL_APPLY) LDAP_P((void *, void*));
+typedef int		(*AVL_CMP) LDAP_P((const void*, const void*));
+typedef int		(*AVL_DUP) LDAP_P((void*, void*));
+typedef void	(*AVL_FREE) LDAP_P((void*));
+
+LDAP_AVL_F( int )
+avl_free LDAP_P(( Avlnode *root, AVL_FREE dfree ));
+
+LDAP_AVL_F( int )
+avl_insert LDAP_P((Avlnode **, void*, AVL_CMP, AVL_DUP));
+
+LDAP_AVL_F( void* )
+avl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+avl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( Avlnode* )
+avl_find2 LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+avl_find_lin LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+#ifdef AVL_NONREENTRANT
+LDAP_AVL_F( void* )
+avl_getfirst LDAP_P((Avlnode *));
+
+LDAP_AVL_F( void* )
+avl_getnext LDAP_P((void));
+#endif
+
+LDAP_AVL_F( int )
+avl_dup_error LDAP_P((void*, void*));
+
+LDAP_AVL_F( int )
+avl_dup_ok LDAP_P((void*, void*));
+
+LDAP_AVL_F( int )
+avl_apply LDAP_P((Avlnode *, AVL_APPLY, void*, int, int));
+
+LDAP_AVL_F( int )
+avl_prefixapply LDAP_P((Avlnode *, void*, AVL_CMP, void*, AVL_CMP, void*, int));
+
+LDAP_AVL_F( int )
+tavl_free LDAP_P(( Avlnode *root, AVL_FREE dfree ));
+
+LDAP_AVL_F( int )
+tavl_insert LDAP_P((Avlnode **, void*, AVL_CMP, AVL_DUP));
+
+LDAP_AVL_F( void* )
+tavl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
+
+LDAP_AVL_F( void* )
+tavl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( Avlnode* )
+tavl_find2 LDAP_P((Avlnode *, const void*, AVL_CMP));
+
+LDAP_AVL_F( Avlnode* )
+tavl_find3 LDAP_P((Avlnode *, const void*, AVL_CMP, int *ret));
+
+#define	TAVL_DIR_LEFT	0
+#define	TAVL_DIR_RIGHT	1
+
+LDAP_AVL_F( Avlnode* )
+tavl_end LDAP_P((Avlnode *, int direction ));
+
+LDAP_AVL_F( Avlnode* )
+tavl_next LDAP_P((Avlnode *, int direction ));
+
+/* apply traversal types */
+#define AVL_PREORDER	1
+#define AVL_INORDER	2
+#define AVL_POSTORDER	3
+/* what apply returns if it ran out of nodes */
+#define AVL_NOMORE	(-6)
+
+LDAP_END_DECL
+
+#endif /* _AVL */