| 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.*; |
| |
| import org.apache.lucene.store.DataInput; |
| |
| /** |
| * A {@link DataInput} wrapping a plain {@link InputStream}. |
| */ |
| public class InputStreamDataInput extends DataInput implements Closeable { |
| private final InputStream is; |
| |
| public InputStreamDataInput(InputStream is) { |
| this.is = is; |
| } |
| |
| @Override |
| public byte readByte() throws IOException { |
| int v = is.read(); |
| if (v == -1) throw new EOFException(); |
| return (byte) v; |
| } |
| |
| @Override |
| public void readBytes(byte[] b, int offset, int len) throws IOException { |
| while (len > 0) { |
| final int cnt = is.read(b, offset, len); |
| if (cnt < 0) { |
| // Partially read the input, but no more data available in the stream. |
| throw new EOFException(); |
| } |
| len -= cnt; |
| offset += cnt; |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| is.close(); |
| } |
| } |