--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/core/src/file_reader.h Wed Jun 23 15:52:26 2010 +0100
@@ -0,0 +1,63 @@
+// file_reader.h
+//
+// Copyright (c) 2005 - 2010 Accenture. All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Accenture - Initial contribution
+//
+
+#ifndef __FILE_READER_H__
+#define __FILE_READER_H__
+
+#include <f32file.h>
+
+
+class MFileReaderObserver
+ {
+public:
+ enum TReadType
+ {
+ EFirst,
+ EMiddle,
+ ELast
+ };
+public:
+ virtual void HandleFileData(const TDesC8& aData, TReadType aType, TBool& aContinue) = 0;
+ virtual void HandleFileReadError(TInt aError) = 0;
+ };
+
+
+class CFileReader : public CActive
+ {
+public:
+ static CFileReader* NewL(TInt aBlockSize, RFs& aFs, TBool aDirect);
+ ~CFileReader();
+ void Read(const TDesC& aFileName, MFileReaderObserver& aObserver);
+ void Read(const TDesC& aFileName, TInt aOffset, MFileReaderObserver& aObserver);
+private:
+ CFileReader(RFs& aFs, TBool aDirect, TInt aBlockSize);
+ void ConstructL();
+ void ReadNextChunk();
+ void ReadNextDirectChunk();
+private: // From CActive.
+ virtual void DoCancel();
+ virtual void RunL();
+private:
+ RFs& iFs;
+ MFileReaderObserver* iObserver;
+ TFileName iFileName;
+ TInt iBlockSize;
+ HBufC8* iBuf;
+ TPtr8 iPtr;
+ RFile iFile;
+ TBool iFirstRead;
+ TBool iDirect;
+ TInt iDirectOffset;
+ };
+
+
+#endif // __FILE_READER_H__