Showing the changes to java/pkg/sun/net/httpserver/FixedLengthOutputStream.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.net.httpserver; | |
| 27 | + | |
| 28 | +import java.io.*; | |
| 29 | +import java.net.*; | |
| 30 | +import com.sun.net.httpserver.*; | |
| 31 | +import com.sun.net.httpserver.spi.*; | |
| 32 | + | |
| 33 | +/** | |
| 34 | + * a class which allows the caller to write up to a defined | |
| 35 | + * number of bytes to an underlying stream. The caller *must* | |
| 36 | + * write the pre-defined number or else an exception will be thrown | |
| 37 | + * and the whole request aborted. | |
| 38 | + * normal close() does not close the underlying stream | |
| 39 | + */ | |
| 40 | + | |
| 41 | +class FixedLengthOutputStream extends FilterOutputStream | |
| 42 | +{ | |
| 43 | + private long remaining; | |
| 44 | + private boolean eof = false; | |
| 45 | + private boolean closed = false; | |
| 46 | + ExchangeImpl t; | |
| 47 | + | |
| 48 | + FixedLengthOutputStream (ExchangeImpl t, OutputStream src, long len) { | |
| 49 | + super (src); | |
| 50 | + this.t = t; | |
| 51 | + this.remaining = len; | |
| 52 | + } | |
| 53 | + | |
| 54 | + public void write (int b) throws IOException { | |
| 55 | + if (closed) { | |
| 56 | + throw new IOException ("stream closed"); | |
| 57 | + } | |
| 58 | + eof = (remaining == 0); | |
| 59 | + if (eof) { | |
| 60 | + throw new StreamClosedException(); | |
| 61 | + } | |
| 62 | + out.write(b); | |
| 63 | + remaining --; | |
| 64 | + } | |
| 65 | + | |
| 66 | + public void write (byte[]b, int off, int len) throws IOException { | |
| 67 | + if (closed) { | |
| 68 | + throw new IOException ("stream closed"); | |
| 69 | + } | |
| 70 | + eof = (remaining == 0); | |
| 71 | + if (eof) { | |
| 72 | + throw new StreamClosedException(); | |
| 73 | + } | |
| 74 | + if (len > remaining) { | |
| 75 | + // stream is still open, caller can retry | |
| 76 | + throw new IOException ("too many bytes to write to stream"); | |
| 77 | + } | |
| 78 | + out.write(b, off, len); | |
| 79 | + remaining -= len; | |
| 80 | + } | |
| 81 | + | |
| 82 | + public void close () throws IOException { | |
| 83 | + if (closed) { | |
| 84 | + return; | |
| 85 | + } | |
| 86 | + closed = true; | |
| 87 | + if (remaining > 0) { | |
| 88 | + t.close(); | |
| 89 | + throw new IOException ("insufficient bytes written to stream"); | |
| 90 | + } | |
| 91 | + flush(); | |
| 92 | + eof = true; | |
| 93 | + LeftOverInputStream is = t.getOriginalInputStream(); | |
| 94 | + if (!is.isClosed()) { | |
| 95 | + try { | |
| 96 | + is.close(); | |
| 97 | + } catch (IOException e) {} | |
| 98 | + } | |
| 99 | + WriteFinishedEvent e = new WriteFinishedEvent (t); | |
| 100 | + t.getHttpContext().getServerImpl().addEvent (e); | |
| 101 | + } | |
| 102 | + | |
| 103 | + // flush is a pass-through | |
| 104 | +} | |