/*
 * BufferCore.h
 *
 *  Created on: 18 May 2016
 *      Author: wentzelc
 */

#ifndef REDACORE_BUFFERCORE_H_
#define REDACORE_BUFFERCORE_H_

// redA Libraries
/* none */

// Standard C/C++ Libraries
/* none */

//---------------------------------------------------------------------------

class CBuffer
{
private:
    // Buffer Definition
    char    * Buffer;       // Memory allocated to buffer
    int     BufSize;        // Size of allocated buffer

    // Buffer pointers
    int     BufStart;       // First unread characters on buffer
    int     BufEnd;         // Next write position for new data (End of unread data + 1)
    int     BufLen;         // Total unread characters on buffer

    // Temporary output buffer
    char    * OutBuffer;    // Temporary output buffer for "stitched" (rollover) data

public:
    // Life Cycle
    CBuffer( int BufferSize );
    ~CBuffer();

    // Direct Operations
    int Reset();
    int Set( char * Data, int Len );
    int Get( char ** Data, int MaxLen = -1 );
    int Clear( int ClearLen );

    // FiFo operations
    int Push( char * Data, int Len );
    int Pop( char ** Data, int MaxLen = -1 );

    // File operations
    int ReadFD( int Handle, int MaxRead = -1 );
    int WriteFD( int Handle, int MaxWrite = -1 );

    // Character Operations
    char GetChar( int Pos );
    bool FindChar( char SearchChar, int &Pos );

    // Miscellaneous
    int Size()          { return BufSize; };
    int Len()           { return BufLen; };
};

//---------------------------------------------------------------------------

#endif /* REDACORE_BUFFERCORE_H_ */