DFSUtil.java
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上传日期:2018-01-08
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文件大小:2k
- /**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.hadoop.hdfs;
- import java.util.StringTokenizer;
- import org.apache.hadoop.fs.Path;
- public class DFSUtil {
- /**
- * Whether the pathname is valid. Currently prohibits relative paths,
- * and names which contain a ":" or "/"
- */
- public static boolean isValidName(String src) {
-
- // Path must be absolute.
- if (!src.startsWith(Path.SEPARATOR)) {
- return false;
- }
-
- // Check for ".." "." ":" "/"
- StringTokenizer tokens = new StringTokenizer(src, Path.SEPARATOR);
- while(tokens.hasMoreTokens()) {
- String element = tokens.nextToken();
- if (element.equals("..") ||
- element.equals(".") ||
- (element.indexOf(":") >= 0) ||
- (element.indexOf("/") >= 0)) {
- return false;
- }
- }
- return true;
- }
- }