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/*
** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include "bdbobj.h"
char *bdbobj_firstkey(struct bdbobj *obj, size_t *keylen, char **val,
size_t *vallen)
{
DBT key, value;
if (!obj->has_dbf) return (0);
memset(&key, 0, sizeof(key));
memset(&value, 0, sizeof(value));
#if DB_VERSION_MAJOR < 2
if ((*obj->dbf->seq)(obj->dbf, &key, &value, R_FIRST)) return (0);
#else
if (obj->has_dbc)
{
(*obj->dbc->c_close)(obj->dbc);
obj->has_dbc=0;
}
#if DB_VERSION_MAJOR > 2
if ((*obj->dbf->cursor)(obj->dbf, 0, &obj->dbc, 0)) return (0);
#else
#if DB_VERSION_MINOR >= 5
if ((*obj->dbf->cursor)(obj->dbf, 0, &obj->dbc, 0)) return (0);
#else
if ((*obj->dbf->cursor)(obj->dbf, 0, &obj->dbc)) return (0);
#endif
#endif
obj->has_dbc=1;
if ((*obj->dbc->c_get)(obj->dbc, &key, &value, DB_FIRST)) return (0);
#endif
*keylen=key.size;
*vallen=value.size;
if ((*val=(char *)malloc(*vallen)) == 0) return (0);
memcpy(*val, value.data, *vallen);
return ((char *)key.data);
}
char *bdbobj_nextkey(struct bdbobj *obj, size_t *keylen, char **val,
size_t *vallen)
{
DBT key, value;
if (!obj->has_dbf) return (0);
memset(&key, 0, sizeof(key));
memset(&value, 0, sizeof(value));
#if DB_VERSION_MAJOR < 2
if ((*obj->dbf->seq)(obj->dbf, &key, &value, R_NEXT)) return (0);
#else
if (!obj->has_dbc) return (0);
if ((*obj->dbc->c_get)(obj->dbc, &key, &value, DB_NEXT))
{
(*obj->dbc->c_close)(obj->dbc);
obj->has_dbc=0;
}
#endif
*keylen=key.size;
*vallen=value.size;
if ((*val=(char *)malloc(*vallen + 1)) == 0) return (0);
memcpy(*val, value.data, *vallen);
(*val)[*vallen]=0;
return ((char *)key.data);
}
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