/**
*  Copyright Mikael Högdahl - triyana@users.sourceforge.net
*
*  This source is distributed under the terms of the Q Public License version 1.0,
*  created by Trolltech (www.trolltech.com).
*/

#ifndef MHCSVFile_h
#define MHCSVFile_h

#include "MH.h"
#include "MHFileTransaction.h"



/**
*  A csv file reader/writer object.
*/
class MHCSVFile : public MH {
public:
    enum {
                        MAX_COL     = 100,
                        MAX_ROW_LEN = 5000,
    };

    static const char*  OPEN_ERROR;
    static const char*  RANGE_ERROR;
    static const char*  READ_ERROR;
    static const char*  WRITE_ERROR;

                        MHCSVFile ();
                        MHCSVFile (const char* fileName, char sep, int limit = 0);
                        ~MHCSVFile ();

    const char*         Class () {return "MHCSVFile";}
    int                 Cols () {return aCols;}
    static void         Compress () {aaLzo = true;}
    char                GetChar (int pos);
    double              GetDouble (int pos);
    int                 GetInt (int pos);
    const char*         GetRow () {if (aBufferPos < aBufferLen) return (const char*) aBuffer + aBufferPos; else return 0;}
    int                 GetRowPos () {return aRow;}
    const char*         GetString (int pos);
    bool                ReadRow (bool split = true);
    int                 Rows() {return aRows;}
    static void         Uncompress () {aaLzo = false;}
    void                WriteFile (const char* fileName);
    void                WriteString (const char* string);

private:
    enum FMODE {
                        CLOSED = 0,
                        READFILE,
                        WRITEFILE,
                        COMPRESS,
    };

    FMODE               aFMode;
    FILE*               aFile;
    int                 aLimitSize;
    char                aSep;
    char*               aBuffer;
    int                 aRows;
    int                 aBufferLen;
    int                 aBufferPos;
    int                 aCols;
    int                 aColPos[MAX_COL];
    int                 aRow;
    static bool         aaLzo;

    void                splitRows ();
};

#endif