1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.apache.harmony.luni.internal.net.www.protocol.http; 18 19 import java.io.IOException; 20 import java.io.InputStream; 21 import java.net.CacheRequest; 22 23 /** 24 * An HTTP payload terminated by the end of the socket stream. 25 */ 26 final class UnknownLengthHttpInputStream extends AbstractHttpInputStream { 27 private boolean inputExhausted; 28 29 UnknownLengthHttpInputStream(InputStream is, CacheRequest cacheRequest, 30 HttpURLConnectionImpl httpURLConnection) throws IOException { 31 super(is, httpURLConnection, cacheRequest); 32 } 33 34 @Override public int read(byte[] buffer, int offset, int count) throws IOException { 35 checkBounds(buffer, offset, count); 36 checkNotClosed(); 37 if (in == null || inputExhausted) { 38 return -1; 39 } 40 int read = in.read(buffer, offset, count); 41 if (read == -1) { 42 inputExhausted = true; 43 endOfInput(false); 44 return -1; 45 } 46 cacheWrite(buffer, offset, read); 47 return read; 48 } 49 50 @Override public int available() throws IOException { 51 checkNotClosed(); 52 return in == null ? 0 : in.available(); 53 } 54 55 @Override public void close() throws IOException { 56 if (closed) { 57 return; 58 } 59 closed = true; 60 if (!inputExhausted) { 61 unexpectedEndOfInput(); 62 } 63 } 64 } 65
