apue_db.h

unix环境高级编程第二版配套源代码 unix环境高级编程第二版配套源代码

#ifndef _APUE_DB_H
#define _APUE_DB_H

typedef	void *	DBHANDLE;

DBHANDLE  db_open(const char *, int, ...);
void      db_close(DBHANDLE);
char     *db_fetch(DBHANDLE, const char *);
int       db_store(DBHANDLE, const char *, const char *, int);
int       db_delete(DBHANDLE, const char *);
void      db_rewind(DBHANDLE);
char     *db_nextrec(DBHANDLE, char *);

/*
 * Flags for db_store().
 */
#define DB_INSERT	   1	/* insert new record only */
#define DB_REPLACE	   2	/* replace existing record */
#define DB_STORE	   3	/* replace or insert */

/*
 * Implementation limits.
 */
#define IDXLEN_MIN	   6	/* key, sep, start, sep, length, \n */
#define IDXLEN_MAX	1024	/* arbitrary */
#define DATLEN_MIN	   2	/* data byte, newline */
#define DATLEN_MAX	1024	/* arbitrary */

#endif /* _APUE_DB_H */