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// -*- C++ -*-
//=============================================================================
/**
* @file FileCharStream.h
*
* $Id$
*
* @author Nanbor Wang <nanbor@cs.wustl.edu>
*/
//=============================================================================
#ifndef _ACEXML_FILECHARSTREAM_H_
#define _ACEXML_FILECHARSTREAM_H_
#include "common/CharStream.h"
#include "ace/streams.h"
/**
* @class ACEXML_FileCharStream FileCharStream.h "common/FileCharStream.h"
*
* An implementation of ACEXML_CharStream for reading
* input from a file.
*/
class ACEXML_Export ACEXML_FileCharStream : public ACEXML_CharStream
{
public:
/// Default constructor.
ACEXML_FileCharStream (void);
/// Construct and opening a file.
ACEXML_FileCharStream (const ACEXML_Char *name);
/// Destructor
virtual ~ACEXML_FileCharStream (void);
/// Open a file.
int open (const ACEXML_Char *name);
/**
* Returns the available ACEXML_Char in the buffer. -1
* if the object is not initialized properly.
*/
virtual int available (void);
/**
* Close this stream and release all resources used by it.
*/
virtual int close (void);
/**
* Read the next ACEXML_Char. Return -1 if we are not able to
* return an ACEXML_Char, 0 if EOS is reached, or 1 if succeed.
*/
virtual int get (ACEXML_Char& ch);
/**
* Read the next batch of ACEXML_Char strings
*/
virtual int read (ACEXML_Char *str,
size_t len);
/**
* Peek the next ACEXML_Char in the CharStream. Return the
* character if succeess, -1 if EOS is reached.
*/
virtual int peek (void);
private:
ACEXML_Char *filename_;
ifstream istream_;
};
#endif /* _ACEXML_FILECHARSTREAM_H_ */
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