Mercurial > jdk8-mips64-public > jaxws / file comparison
comparison: src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/ChunkInputStream.java
src/share/jaxws_classes/com/sun/xml/internal/org/jvnet/mimepull/ChunkInputStream.java
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| 1 /* | |
| 2 * Copyright (c) 1997, 2012, 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 com.sun.xml.internal.org.jvnet.mimepull; | |
| 27 | |
| 28 import java.io.InputStream; | |
| 29 import java.io.IOException; | |
| 30 | |
| 31 /** | |
| 32 * Constructs a InputStream from a linked list of {@link Chunk}s. | |
| 33 * | |
| 34 * @author Kohsuke Kawaguchi | |
| 35 * @author Jitendra Kotamraju | |
| 36 */ | |
| 37 final class ChunkInputStream extends InputStream { | |
| 38 Chunk current; | |
| 39 int offset; | |
| 40 int len; | |
| 41 final MIMEMessage msg; | |
| 42 final MIMEPart part; | |
| 43 byte[] buf; | |
| 44 | |
| 45 public ChunkInputStream(MIMEMessage msg, MIMEPart part, Chunk startPos) { | |
| 46 this.current = startPos; | |
| 47 len = current.data.size(); | |
| 48 buf = current.data.read(); | |
| 49 this.msg = msg; | |
| 50 this.part = part; | |
| 51 } | |
| 52 | |
| 53 @Override | |
| 54 public int read(byte b[], int off, int sz) throws IOException { | |
| 55 if (!fetch()) { | |
| 56 return -1; | |
| 57 } | |
| 58 | |
| 59 sz = Math.min(sz, len-offset); | |
| 60 System.arraycopy(buf,offset,b,off,sz); | |
| 61 return sz; | |
| 62 } | |
| 63 | |
| 64 public int read() throws IOException { | |
| 65 if (!fetch()) { | |
| 66 return -1; | |
| 67 } | |
| 68 return (buf[offset++] & 0xff); | |
| 69 } | |
| 70 | |
| 71 /** | |
| 72 * Gets to the next chunk if we are done with the current one. | |
| 73 * @return | |
| 74 */ | |
| 75 private boolean fetch() { | |
| 76 if (current == null) { | |
| 77 throw new IllegalStateException("Stream already closed"); | |
| 78 } | |
| 79 while(offset==len) { | |
| 80 while(!part.parsed && current.next == null) { | |
| 81 msg.makeProgress(); | |
| 82 } | |
| 83 current = current.next; | |
| 84 | |
| 85 if (current == null) { | |
| 86 return false; | |
| 87 } | |
| 88 this.offset = 0; | |
| 89 this.buf = current.data.read(); | |
| 90 this.len = current.data.size(); | |
| 91 } | |
| 92 return true; | |
| 93 } | |
| 94 | |
| 95 @Override | |
| 96 public void close() throws IOException { | |
| 97 super.close(); | |
| 98 current = null; | |
| 99 } | |
| 100 } |
