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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* read record through position and fix key-position */
/* As nisam_rsame but supply a position */
#include "isamdef.h"
/*
** If inx >= 0 update index pointer
** Returns one of the following values:
** 0 = Ok.
** 1 = Record deleted
** -1 = EOF (or something similar. More information in my_errno)
*/
int nisam_rsame_with_pos(N_INFO *info, byte *record, int inx, ulong filepos)
{
DBUG_ENTER("nisam_rsame_with_pos");
if (inx >= (int) info->s->state.keys || inx < -1)
{
my_errno=HA_ERR_WRONG_INDEX;
DBUG_RETURN(-1);
}
info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
if ((*info->s->read_rnd)(info,record,filepos,0))
{
if (my_errno == HA_ERR_RECORD_DELETED)
{
my_errno=HA_ERR_KEY_NOT_FOUND;
DBUG_RETURN(1);
}
DBUG_RETURN(-1);
}
info->lastpos=filepos;
info->lastinx=inx;
if (inx >= 0)
{
VOID(_nisam_make_key(info,(uint) inx,info->lastkey,record,info->lastpos));
info->update|=HA_STATE_KEY_CHANGED; /* Don't use indexposition */
}
DBUG_RETURN(0);
} /* nisam_rsame_pos */
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