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+/*
+ * Generic vector interface header.
+ * Copyright (C) 1997, 98 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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.
+ *
+ * GNU Zebra 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 this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _ZEBRA_VECTOR_H
+#define _ZEBRA_VECTOR_H
+
+#include "memory.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* struct for vector */
+struct _vector {
+	unsigned int active;  /* number of active slots */
+	unsigned int alloced; /* number of allocated slot */
+	unsigned int count;
+	void **index;	 /* index to data */
+};
+typedef struct _vector *vector;
+
+#define VECTOR_MIN_SIZE 1
+
+/* (Sometimes) usefull macros.  This macro convert index expression to
+ array expression. */
+/* Reference slot at given index, caller must ensure slot is active */
+#define vector_slot(V,I)  ((V)->index[(I)])
+/* Number of active slots.
+ * Note that this differs from vector_count() as it the count returned
+ * will include any empty slots
+ */
+#define vector_active(V) ((V)->active)
+
+/* Prototypes. */
+extern vector vector_init(unsigned int size);
+extern void vector_ensure(vector v, unsigned int num);
+extern int vector_empty_slot(vector v);
+extern int vector_set(vector v, void *val);
+extern int vector_set_index(vector v, unsigned int i, void *val);
+extern void vector_unset(vector v, unsigned int i);
+extern void vector_unset_value(vector v, void *val);
+extern void vector_remove(vector v, unsigned int ix);
+extern void vector_compact(vector v);
+
+static inline unsigned int vector_count(vector v)
+{
+	return v->count;
+}
+
+extern void vector_free(vector v);
+extern vector vector_copy(vector v);
+
+extern void *vector_lookup(vector, unsigned int);
+extern void *vector_lookup_ensure(vector, unsigned int);
+extern void vector_to_array(vector v, void ***dest, int *argc);
+extern vector array_to_vector(void **src, int argc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ZEBRA_VECTOR_H */