Inital commit

FossilOrigin-Name: e0e2f46227f2b8f241effd54d7eb2a6f6391b1bd228fc544935bd19635040e62

src/capwap/avliter_seek.c

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+/*
+    This file is part of libcapwap.
+
+    libcapwap 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 3 of the License, or
+    (at your option) any later version.
+
+    libcapwap 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+/**
+ *@file
+ *@brief Implementation of avliter_seek
+ */
+
+
+#include "avltree.h"
+
+/**
+ * Set an AVL Iterator to a specific position.
+ * @param i AVL Iterator
+ * @param d element to search for
+ * @return element found or NULL if not found
+ */
+void * avliter_seek(avliter_t *i,void *d)
+{
+	if (!i->root)
+		return NULL;
+
+	i->cur=i->root;
+	i->stack_ptr=0;
+		
+	int rc;
+	while(i->cur) {
+
+		rc = i->cmp(d,i->cur->data);
+		if (rc==0){
+			i->stack[i->stack_ptr++]=i->cur->right;
+			i->stack[i->stack_ptr++]=i->cur;
+			return avliter_next(i);
+		}
+
+		if (rc<0) {
+			i->stack[i->stack_ptr++]=i->cur->right;
+			i->stack[i->stack_ptr++]=i->cur;
+
+			i->cur=i->cur->left;
+
+		}
+		if (rc>0) {
+
+			i->cur=i->cur->right;
+		}
+	}
+	return NULL;
+}
+
+