Imported Genode release 11.11

base/include/util/avl_string.h

@@ -0,0 +1,77 @@
+/*
+ * \brief  Utility for handling strings as AVL-node keys
+ * \author Norman Feske
+ * \date   2006-07-12
+ */
+
+/*
+ * Copyright (C) 2006-2011 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__UTIL__AVL_STRING_H_
+#define _INCLUDE__UTIL__AVL_STRING_H_
+
+#include <util/avl_tree.h>
+#include <util/string.h>
+
+namespace Genode {
+
+	class Avl_string_base : public Avl_node<Avl_string_base>
+	{
+		private:
+
+			const char *_str;
+
+		protected:
+
+			Avl_string_base(const char *str) : _str(str) { }
+
+		public:
+
+			const char *name() const { return _str; }
+
+
+			/************************
+			 ** Avl node interface **
+			 ************************/
+
+			bool higher(Avl_string_base *c) { return (strcmp(c->_str, _str) > 0); }
+
+			/**
+			 * Find by name
+			 */
+			Avl_string_base *find_by_name(const char *name)
+			{
+				if (strcmp(name, _str) == 0) return this;
+
+				Avl_string_base *c = Avl_node<Avl_string_base>::child(strcmp(name, _str) > 0);
+				return c ? c->find_by_name(name) : 0;
+			}
+	};
+
+
+	/*
+	 * The template pumps up the Avl_string_base object and
+	 * provides the buffer for the actual string.
+	 */
+	template <int STR_LEN>
+	class Avl_string : public Avl_string_base
+	{
+		private:
+
+			char _str_buf[STR_LEN];
+
+		public:
+
+			Avl_string(const char *str) : Avl_string_base(_str_buf)
+			{
+				strncpy(_str_buf, str, sizeof(_str_buf));
+				_str_buf[STR_LEN - 1] = 0;
+			}
+	};
+}
+
+#endif /* _INCLUDE__UTIL__AVL_STRING_H_ */