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106 lines
3.0 KiB
106 lines
3.0 KiB
10 years ago
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/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.http.client.entity;
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import org.apache.http.annotation.NotThreadSafe;
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import java.io.IOException;
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import java.io.InputStream;
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/**
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* Lazy init InputStream wrapper.
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*/
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@NotThreadSafe
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class LazyDecompressingInputStream extends InputStream {
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private final InputStream wrappedStream;
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private final DecompressingEntity decompressingEntity;
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private InputStream wrapperStream;
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public LazyDecompressingInputStream(
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final InputStream wrappedStream,
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final DecompressingEntity decompressingEntity) {
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this.wrappedStream = wrappedStream;
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this.decompressingEntity = decompressingEntity;
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}
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private void initWrapper() throws IOException {
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if (wrapperStream == null) {
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wrapperStream = decompressingEntity.decorate(wrappedStream);
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}
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}
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@Override
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public int read() throws IOException {
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initWrapper();
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return wrapperStream.read();
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}
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@Override
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public int read(final byte[] b) throws IOException {
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initWrapper();
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return wrapperStream.read(b);
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}
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@Override
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public int read(final byte[] b, final int off, final int len) throws IOException {
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initWrapper();
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return wrapperStream.read(b, off, len);
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}
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@Override
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public long skip(final long n) throws IOException {
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initWrapper();
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return wrapperStream.skip(n);
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}
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@Override
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public boolean markSupported() {
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return false;
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}
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@Override
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public int available() throws IOException {
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initWrapper();
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return wrapperStream.available();
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}
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@Override
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public void close() throws IOException {
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try {
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if (wrapperStream != null) {
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wrapperStream.close();
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}
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} finally {
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wrappedStream.close();
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}
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}
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}
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