| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed 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. |
| */ |
| |
| package libcore.net.http; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| |
| /** |
| * An HTTP body with a fixed length known in advance. |
| */ |
| final class FixedLengthOutputStream extends AbstractHttpOutputStream { |
| private final OutputStream socketOut; |
| private int bytesRemaining; |
| |
| public FixedLengthOutputStream(OutputStream socketOut, int bytesRemaining) { |
| this.socketOut = socketOut; |
| this.bytesRemaining = bytesRemaining; |
| } |
| |
| @Override public void write(byte[] buffer, int offset, int count) throws IOException { |
| checkNotClosed(); |
| Arrays.checkOffsetAndCount(buffer.length, offset, count); |
| if (count > bytesRemaining) { |
| throw new IOException("expected " + bytesRemaining + " bytes but received " + count); |
| } |
| socketOut.write(buffer, offset, count); |
| bytesRemaining -= count; |
| } |
| |
| @Override public void flush() throws IOException { |
| if (closed) { |
| return; // don't throw; this stream might have been closed on the caller's behalf |
| } |
| socketOut.flush(); |
| } |
| |
| @Override public void close() throws IOException { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| if (bytesRemaining > 0) { |
| throw new IOException("unexpected end of stream"); |
| } |
| } |
| } |