RetroArch/libretro-db/libretrodb.h
2015-09-21 15:31:00 +02:00

91 lines
2.1 KiB
C

#ifndef __LIBRETRODB_H__
#define __LIBRETRODB_H__
#include <stdint.h>
#ifdef _WIN32
#include <direct.h>
#else
#include <unistd.h>
#endif
#include "query.h"
#include "rmsgpack_dom.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct libretrodb libretrodb_t;
typedef struct libretrodb_cursor libretrodb_cursor_t;
typedef struct libretrodb_index libretrodb_index_t;
typedef int (*libretrodb_value_provider)(void *ctx, struct rmsgpack_dom_value *out);
int libretrodb_create(RFILE *fd, libretrodb_value_provider value_provider, void *ctx);
void libretrodb_close(libretrodb_t *db);
int libretrodb_open(const char *path, libretrodb_t *db);
int libretrodb_create_index(libretrodb_t *db, const char *name,
const char *field_name);
int libretrodb_find_entry(libretrodb_t *db, const char *index_name,
const void *key, struct rmsgpack_dom_value *out);
libretrodb_t *libretrodb_new(void);
void libretrodb_free(libretrodb_t *db);
libretrodb_cursor_t *libretrodb_cursor_new(void);
void libretrodb_cursor_free(libretrodb_cursor_t *dbc);
/**
* libretrodb_cursor_open:
* @db : Handle to database.
* @cursor : Handle to database cursor.
* @q : Query to execute.
*
* Opens cursor to database based on query @q.
*
* Returns: 0 if successful, otherwise negative.
**/
int libretrodb_cursor_open(libretrodb_t *db,
libretrodb_cursor_t *cursor,
libretrodb_query_t *query);
/**
* libretrodb_cursor_reset:
* @cursor : Handle to database cursor.
*
* Resets cursor.
*
* Returns: ???.
**/
int libretrodb_cursor_reset(libretrodb_cursor_t *cursor);
/**
* libretrodb_cursor_close:
* @cursor : Handle to database cursor.
*
* Closes cursor and frees up allocated memory.
**/
void libretrodb_cursor_close(libretrodb_cursor_t *cursor);
void *libretrodb_query_compile(libretrodb_t *db, const char *query,
size_t buff_len, const char **error);
void libretrodb_query_free(void *q);
int libretrodb_cursor_read_item(libretrodb_cursor_t *cursor,
struct rmsgpack_dom_value *out);
#ifdef __cplusplus
}
#endif
#endif