1 files changed, 63 insertions, 0 deletions
diff --git a/isam/rkey.c b/isam/rkey.c
new file mode 100644
index 00000000000..8f1f2f11ab5
--- /dev/null
+++ b/isam/rkey.c
@@ -0,0 +1,63 @@
+/* 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 */
+
+/* L{ser p} basen av en isam_nyckel */
+
+#include "isamdef.h"
+
+
+	/* Read a record using key */
+	/* Ordinary search_flag is 0 ; Give error if no record with key */
+
+int nisam_rkey(N_INFO *info, byte *buf, int inx, const byte *key, uint key_len, enum ha_rkey_function search_flag)
+{
+  uchar *key_buff;
+  ISAM_SHARE *share=info->s;
+  DBUG_ENTER("nisam_rkey");
+  DBUG_PRINT("enter",("base: %lx  inx: %d  search_flag: %d",
+		      info,inx,search_flag));
+
+  if ((inx = _nisam_check_index(info,inx)) < 0)
+    DBUG_RETURN(-1);
+  info->update&= (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);
+  if (key_len >= (share->keyinfo[inx].base.keylength - share->rec_reflength)
+      && !(info->s->keyinfo[inx].base.flag & HA_SPACE_PACK_USED))
+    key_len=USE_HOLE_KEY;
+  key_buff=info->lastkey+info->s->base.max_key_length;
+  key_len=_nisam_pack_key(info,(uint) inx,key_buff,(uchar*) key,key_len);
+  DBUG_EXECUTE("key",_nisam_print_key(DBUG_FILE,share->keyinfo[inx].seg,
+				    (uchar*) key););
+
+#ifndef NO_LOCKING
+  if (_nisam_readinfo(info,F_RDLCK,1))
+    goto err;
+#endif
+
+  VOID(_nisam_search(info,info->s->keyinfo+inx,key_buff,key_len,
+		  nisam_read_vec[search_flag],info->s->state.key_root[inx]));
+  if ((*info->read_record)(info,info->lastpos,buf) >= 0)
+  {
+    info->update|= HA_STATE_AKTIV;		/* Record is read */
+    DBUG_RETURN(0);
+  }
+
+  info->lastpos = NI_POS_ERROR;			/* Didn't find key */
+  VOID(_nisam_move_key(info->s->keyinfo+inx,info->lastkey,key_buff));
+  if (search_flag == HA_READ_AFTER_KEY)
+    info->update|=HA_STATE_NEXT_FOUND;		/* Previous gives last row */
+err:
+  DBUG_RETURN(-1);
+} /* nisam_rkey */