* introduced stubbed TimeBackend to libroot, which will contain implementations

of localtime(), gmtime() and mktime()
* implemented tzset() to read the required info from libroot_timezone_info

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37935 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/libroot/time/ICUTimeBackend.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2010, Oliver Tappe, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _ICU_TIME_BACKEND_H
+#define _ICU_TIME_BACKEND_H
+
+
+#include <TimeBackend.h>
+
+
+namespace BPrivate {
+
+
+class ICUTimeBackend : public TimeBackend {
+public:
+								ICUTimeBackend();
+	virtual						~ICUTimeBackend();
+
+	virtual	const status_t		TZSet();
+
+	virtual void				Initialize(TimeDataBridge* dataBridge);
+
+private:
+			TimeDataBridge		fDataBridge;
+};
+
+
+}	// namespace BPrivate
+
+
+#endif	// _ICU_TIME_BACKEND_H

headers/private/libroot/time/TimeBackend.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2010, Oliver Tappe, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _TIME_BACKEND_H
+#define _TIME_BACKEND_H
+
+
+#include <SupportDefs.h>
+
+
+namespace BPrivate {
+
+
+struct TimeDataBridge {
+	int*	addrOfDaylight;
+	long*	addrOfTimezone;
+	char**	addrOfTZName;
+
+	TimeDataBridge();
+};
+
+
+class TimeBackend {
+public:
+								TimeBackend();
+	virtual						~TimeBackend();
+
+	virtual	const status_t		TZSet() = 0;
+
+	virtual void				Initialize(TimeDataBridge* dataBridge) = 0;
+
+	static	status_t			LoadBackend();
+};
+
+
+extern TimeBackend* gTimeBackend;
+
+
+}	// namespace BPrivate
+
+
+#endif	// _TIME_BACKEND_H