+++ /dev/null
-package org.apache.lucene.store;
-
-/**
- * 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.
- */
-
-import java.io.IOException;
-import java.util.zip.CRC32;
-import java.util.zip.Checksum;
-
-/** Writes bytes through to a primary IndexOutput, computing
- * checksum as it goes. Note that you cannot use seek().
- *
- * @lucene.internal
- */
-public class ChecksumIndexInput extends IndexInput {
- IndexInput main;
- Checksum digest;
-
- public ChecksumIndexInput(IndexInput main) {
- this.main = main;
- digest = new CRC32();
- }
-
- @Override
- public byte readByte() throws IOException {
- final byte b = main.readByte();
- digest.update(b);
- return b;
- }
-
- @Override
- public void readBytes(byte[] b, int offset, int len)
- throws IOException {
- main.readBytes(b, offset, len);
- digest.update(b, offset, len);
- }
-
-
- public long getChecksum() {
- return digest.getValue();
- }
-
- @Override
- public void close() throws IOException {
- main.close();
- }
-
- @Override
- public long getFilePointer() {
- return main.getFilePointer();
- }
-
- @Override
- public void seek(long pos) {
- throw new RuntimeException("not allowed");
- }
-
- @Override
- public long length() {
- return main.length();
- }
-}