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dsDBMi.h

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/*
 * $Id: dsDBMi.h,v 1.4 2003/08/27 15:40:40 dsamersoff Exp $
 */

#ifndef dsDBMi_h
#define dsDBMi_h

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif


#ifdef HAVE_STL_STRING
# include <string>
#endif

#include <sys/types.h>
#include <limits.h>
#include <stdlib.h>
#include <fcntl.h>

#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif


#ifdef HAVE_GDBM_H
#  include <gdbm.h>
#  define  USE_GDBM   1
#else
# ifdef HAVE_NDBM_H
#   include <ndbm.h>
# endif
#endif

#include <dsSmartException.h>
#include <dsutil.h>

DECLARE_EXCEPTION(dsDBMi);

#ifdef USE_GDBM
# define O_DBMSYNC  GDBM_SYNC
#else
# define O_DBMSYNC  0
#endif

#define O_DBMSETLOCK 0x100

class dsDBMi
{
public :
#ifdef USE_GDBM       
        GDBM_FILE _conn;
#else
        DBM *_conn;
#endif

        datum  _res;
        datum  _key;
        char *_dbName;
        int _firstkey;

        char *_str_key;
        char *_str_val;     

        dsDBMi(char *database, int flags = O_RDWR, int mode = 0644);
       ~dsDBMi();

    void openCursor();
    int fetchNext();
    int fetchKey();
    void closeCursor();

    int add(const char* key, const char *val );
    void put(const char* key, const char *val );

    int add(const char* key, void *val, int size );
    void put(const char* key, void *val, int size );

    void del(const char* key);
    int  get(const char* key);
        int  get(datum key);
        int  get();
        int  exists(const char *key); 

        char *operator[](const char *key){ get(key); return val(); }

        datum& result(){ return _res; }

        char *val(){ if (_str_val) delete _str_val; 
                     return (_str_val = ds_strndup((char *) _res.dptr, _res.dsize) ); 
                   } 

        char *key(){  if (_str_key) delete _str_key;  
                      return (_str_key = ds_strndup((char *) _key.dptr, _key.dsize)); 
                   } 

#ifdef HAVE_STL_STRING
        void put(const std::string& key, std::string& val );
        void add(const std::string& key, const std::string& val );
         int get(const std::string& key);
#endif


};

#endif

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