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Apache HttpComponents Core (non-blocking I/O)
/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.http.nio.entity;
import java.io.IOException;
import java.io.InputStream;
import org.apache.http.io.BufferInfo;
import org.apache.http.nio.util.ContentInputBuffer;
import org.apache.http.util.Args;
/**
* {@link InputStream} adaptor for {@link ContentInputBuffer}.
*
* @since 4.0
*/
public class ContentInputStream extends InputStream {
private final ContentInputBuffer buffer;
public ContentInputStream(final ContentInputBuffer buffer) {
super();
Args.notNull(buffer, "Input buffer");
this.buffer = buffer;
}
@Override
public int available() throws IOException {
if (this.buffer instanceof BufferInfo) {
return ((BufferInfo) this.buffer).length();
} else {
return super.available();
}
}
@Override
public int read(final byte[] b, final int off, final int len) throws IOException {
return this.buffer.read(b, off, len);
}
@Override
public int read(final byte[] b) throws IOException {
if (b == null) {
return 0;
}
return this.buffer.read(b, 0, b.length);
}
@Override
public int read() throws IOException {
return this.buffer.read();
}
@Override
public void close() throws IOException {
// read and discard the remainder of the message
final byte tmp[] = new byte[1024];
while (this.buffer.read(tmp, 0, tmp.length) >= 0) {
}
super.close();
}
}