generic handle class for the console.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23353 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/boot/platform/atari_m68k/Handle.cpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2003, Axel Dörfler, [email protected]. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <SupportDefs.h>
+#include <platform/openfirmware/openfirmware.h>
+#include <util/kernel_cpp.h>
+
+#include "Handle.h"
+#include "toscalls."
+
+Handle::Handle(int handle, bool takeOwnership)
+	:
+	fHandle((int16)handle),
+	fOwnHandle(takeOwnership)
+{
+}
+
+
+Handle::Handle(void)
+	:
+	fHandle(DEV_CONSOLE)
+{
+}
+
+
+Handle::~Handle()
+{
+	//if (fOwnHandle)
+	//	of_close(fHandle);
+}
+
+
+void
+Handle::SetHandle(int handle, bool takeOwnership)
+{
+	//if (fHandle && fOwnHandle)
+	//	of_close(fHandle);
+
+	fHandle = (int16)handle;
+	fOwnHandle = takeOwnership;
+}
+
+
+ssize_t
+Handle::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize)
+{
+	const char *string = (const char *)buffer;
+
+	// can't seek
+	for (i = 0; i < bufferSize; i++) {
+		if (Bconstat(fHandle) == 0)
+			return i;
+		Bconin(fHandle, string[i]);
+	}
+
+	return bufferSize;
+}
+
+
+ssize_t
+Handle::WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize)
+{
+	const char *string = (const char *)buffer;
+
+	// can't seek
+	for (i = 0; i < bufferSize; i++) {
+		Bconout(fHandle, string[i]);
+	}
+
+	return bufferSize;
+}
+
+
+off_t 
+Handle::Size() const
+{
+	// ToDo: fix this!
+	return 1024LL * 1024 * 1024 * 1024;
+		// 1024 GB
+}
+

src/system/boot/platform/atari_m68k/Handle.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2003, Axel Dörfler, [email protected]. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef HANDLE_H
+#define HANDLE_H
+
+
+#include <boot/vfs.h>
+
+
+#ifdef __cplusplus
+
+class Handle : public ConsoleNode {
+	public:
+		Handle(int handle, bool takeOwnership = true);
+		Handle();
+		virtual ~Handle();
+
+		void SetHandle(int handle, bool takeOwnership = true);
+
+		virtual ssize_t ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize);
+		virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize);
+
+		virtual off_t Size() const;
+
+	protected:
+		int16		fHandle;
+		bool	fOwnHandle;
+};
+
+#endif	/* __cplusplus */
+
+#endif	/* HANDLE_H */