initial import of openbios--main--1.0--patch-26

git-svn-id: svn://coreboot.org/openbios/openbios-devel@1 f158a5a8-5612-0410-a976-696ce0be7e32

fs/hfs/node.c

@@ -0,0 +1,59 @@
+/*
+ * libhfs - library for reading and writing Macintosh HFS volumes
+ * Copyright (C) 1996-1998 Robert Leslie
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: node.c,v 1.9 1998/11/02 22:09:05 rob Exp $
+ */
+
+#include "openbios/config.h"
+#include "libhfs.h"
+#include "node.h"
+#include "data.h"
+#include "btree.h"
+
+/*
+ * NAME:	node->search()
+ * DESCRIPTION:	locate a record in a node, or the record it should follow
+ */
+int n_search(node *np, const byte *pkey)
+{
+  const btree *bt = np->bt;
+  byte key1[HFS_MAX_KEYLEN], key2[HFS_MAX_KEYLEN];
+  int i, comp = -1;
+
+  bt->keyunpack(pkey, key2);
+
+  for (i = np->nd.ndNRecs; i--; )
+    {
+      const byte *rec;
+
+      rec = HFS_NODEREC(*np, i);
+
+      if (HFS_RECKEYLEN(rec) == 0)
+	continue;  /* deleted record */
+
+      bt->keyunpack(rec, key1);
+      comp = bt->keycompare(key1, key2);
+
+      if (comp <= 0)
+	break;
+    }
+
+  np->rnum = i;
+
+  return comp == 0;
+}