#ifndef LEVELDB_EXT_H
#define LEVELDB_EXT_H

#ifdef __cplusplus
extern "C" {
#endif

#include "leveldb/c.h"


/* Returns NULL if not found. Otherwise stores the value in **valptr.
   Stores the length of the value in *vallen. 
   Returns a context must be later to free*/
extern void* leveldb_get_ext(
    leveldb_t* db,
    const leveldb_readoptions_t* options,
    const char* key, size_t keylen,
    char** valptr,
    size_t* vallen,
    char** errptr);

// Free context returns by leveldb_get_ext
extern void leveldb_get_free_ext(void* context);


// Below iterator functions like leveldb iterator but returns valid status for iterator
extern unsigned char leveldb_iter_seek_to_first_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_seek_to_last_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_seek_ext(leveldb_iterator_t*, const char* k, size_t klen);
extern unsigned char leveldb_iter_next_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_prev_ext(leveldb_iterator_t*);


#ifdef __cplusplus
}
#endif

#endif