1 files changed, 41 insertions, 0 deletions
diff --git a/src/common.c b/src/common.c
new file mode 100644
index 0000000..3eee2fb
--- /dev/null
+++ b/src/common.c
@@ -0,0 +1,41 @@
+/* common.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2010 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <malloc.h>
+#include <string.h>
+#include "apk_defines.h"
+
+static int *dummy_array = 0;
+
+void *apk_array_resize(void *array, size_t new_size, size_t elem_size)
+{
+	int old_size, diff;
+	void *tmp;
+
+	if (new_size == 0) {
+		if (array != &dummy_array)
+			free(array);
+		return &dummy_array;
+	}
+
+	old_size = array ? *((int*) array) : 0;
+	diff = new_size - old_size;
+
+	if (array == &dummy_array)
+		array = NULL;
+
+	tmp = realloc(array, sizeof(int) + new_size * elem_size);
+	if (diff > 0)
+		memset(tmp + sizeof(int) + old_size * elem_size, 0,
+		       diff * elem_size);
+	*((int*) tmp) = new_size;
+
+	return tmp;
+}