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FastCharStream.h

/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
* 
* Distributable under the terms of either the Apache License (Version 2.0) or 
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_util_FastCharStream_
#define _lucene_util_FastCharStream_

#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif

#include "CLucene/util/Reader.h"

CL_NS_DEF(util)

      /** Ported implementation of the FastCharStream class. */
00019       class FastCharStream:LUCENE_BASE
      {
            static const int32_t maxRewindSize;
            int32_t pos;
            int32_t rewindPos;
            int64_t resetPos;
            int32_t col;
            int32_t line;
            // read character from stream return false on error
            void readChar(TCHAR &); 
      public:
            Reader* input;

            /// Initializes a new instance of the FastCharStream class LUCENE_EXPORT.
            FastCharStream(Reader* reader);
            ~FastCharStream();
            
            /// Returns the next TCHAR from the stream.
            int GetNext();

            void UnGet();
            
            /// Returns the current top TCHAR from the input stream without removing it.
            int Peek();
            
            
            /// Returns <b>True</b> if the end of stream was reached.
            bool Eos() const;

            /// Gets the current column.
            int32_t Column() const;

            /// Gets the current line.
            int32_t Line() const;
      };
CL_NS_END
#endif

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