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100 lines
3.1 KiB
Java
100 lines
3.1 KiB
Java
/*
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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 ch.boye.httpclientandroidlib.impl.io;
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import java.io.IOException;
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import java.io.OutputStream;
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import ch.boye.httpclientandroidlib.io.SessionOutputBuffer;
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/**
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* Output stream that writes data without any transformation. The end of
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* the content entity is demarcated by closing the underlying connection
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* (EOF condition). Entities transferred using this input stream can be of
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* unlimited length.
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* <p>
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* Note that this class NEVER closes the underlying stream, even when close
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* gets called. Instead, the stream will be marked as closed and no further
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* output will be permitted.
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*
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* @since 4.0
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*/
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public class IdentityOutputStream extends OutputStream {
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/**
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* Wrapped session output buffer.
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*/
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private final SessionOutputBuffer out;
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/** True if the stream is closed. */
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private boolean closed = false;
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public IdentityOutputStream(final SessionOutputBuffer out) {
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super();
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if (out == null) {
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throw new IllegalArgumentException("Session output buffer may not be null");
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}
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this.out = out;
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}
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/**
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* <p>Does not close the underlying socket output.</p>
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*
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* @throws IOException If an I/O problem occurs.
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*/
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public void close() throws IOException {
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if (!this.closed) {
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this.closed = true;
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this.out.flush();
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}
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}
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public void flush() throws IOException {
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this.out.flush();
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}
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public void write(byte[] b, int off, int len) throws IOException {
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if (this.closed) {
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throw new IOException("Attempted write to closed stream.");
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}
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this.out.write(b, off, len);
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}
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public void write(byte[] b) throws IOException {
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write(b, 0, b.length);
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}
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public void write(int b) throws IOException {
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if (this.closed) {
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throw new IOException("Attempted write to closed stream.");
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}
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this.out.write(b);
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}
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}
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