Adding dynamic array datastructure.

array.h

@@ -0,0 +1,80 @@
+/* array.h
+ *
+ *   Copyright (C) 2010, 2012   Henrik Hautakoski <henrik@fiktivkod.org>
+ *
+ *   This program 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 of the License, or
+ *   (at your option) any later version.
+ */
+
+#ifndef __ARRAY_H
+#define __ARRAY_H
+
+#include <stddef.h>
+
+/*
+ * This macro should be used to define the array struct:
+ * struct myarray ARRAY(struct element);
+ */
+#define ARRAY(type)	\
+	type *__items;	\
+	unsigned __nr;
+
+#define ARRAY_INIT { NULL, 0 }
+
+typedef void (array_clear_fn_t)(void*);
+typedef int (array_cmp_fn_t)(const void *, const void *b);
+
+/* public API */
+void* array_create(void);
+
+#define array_copy(a) __array_copy(a, array_ele_size(a))
+
+int array_destroy(void *arr);
+
+#define array_clear(a) __array_clear_fn(a, NULL, -1);
+
+#define array_clear_fn(a, fn) __array_clear_fn(a, fn, array_ele_size(a));
+
+#define array_insert(a, i) __array_insert(a, i, array_ele_size(a));
+
+#define array_remove(a, i) __array_remove(a, i, array_ele_size(a));
+
+#define array_reduce(a) __array_reduce(a, array_ele_size(a));
+
+#define array_has(a, i, fn) \
+	(__array_lookup(a, i, fn, array_ele_size(a)) != NULL)
+
+#define array_size(a) ((a) ? (a)->nr : 0)
+
+#define array_ele_size(a) sizeof(*((a)->__items))
+
+#define array_isempty(a) (!(a) || (a)->nr == 0)
+
+#define array_foreach(a, i)			\
+	for(i = (a)->__items;			\
+		i < ((a)->__items + (a)->__nr);	\
+		i++)
+
+/* internal */
+
+void* __array_copy(void *__arr, unsigned n);
+
+void __array_clear_fn(void *__arr,
+			array_clear_fn_t *fn, unsigned n);
+
+int __array_insert(void *__arr,
+	const void *item, unsigned n);
+
+void* __array_remove(void *__arr, unsigned i, unsigned n);
+
+void* __array_reduce(void *__arr, unsigned n);
+
+void* __array_lookup(void *__arr, const void *item,
+		array_cmp_fn_t *fn, unsigned n);
+
+int __array_indexof(void *__arr,
+	const void *item, unsigned n);
+
+#endif /* __ARRAY_H */