J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * reserved comment block |
| 3 | * DO NOT REMOVE OR ALTER! |
| 4 | */ |
| 5 | /* |
| 6 | * Copyright 1999-2005 The Apache Software Foundation. |
| 7 | * |
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 9 | * you may not use this file except in compliance with the License. |
| 10 | * You may obtain a copy of the License at |
| 11 | * |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | * See the License for the specific language governing permissions and |
| 18 | * limitations under the License. |
| 19 | * |
| 20 | */ |
| 21 | package com.sun.org.apache.xml.internal.security.utils; |
| 22 | |
| 23 | import java.io.IOException; |
| 24 | import java.io.OutputStream; |
| 25 | |
| 26 | /** |
| 27 | * A class that buffers writte without synchronize its methods |
| 28 | * @author raul |
| 29 | * |
| 30 | */ |
| 31 | public class UnsyncBufferedOutputStream extends OutputStream { |
| 32 | final OutputStream out; |
| 33 | static final int size=8*1024; |
| 34 | final byte[] buf=new byte[size]; |
| 35 | int pointer=0; |
| 36 | /** |
| 37 | * Creates a buffered output stream without synchronization |
| 38 | * @param out the outputstream to buffer |
| 39 | */ |
| 40 | public UnsyncBufferedOutputStream(OutputStream out) { |
| 41 | this.out=out; |
| 42 | } |
| 43 | |
| 44 | /** @inheritDoc */ |
| 45 | public void write(byte[] arg0) throws IOException { |
| 46 | write(arg0,0,arg0.length); |
| 47 | } |
| 48 | |
| 49 | /** @inheritDoc */ |
| 50 | public void write(byte[] arg0, int arg1, int len) throws IOException { |
| 51 | int newLen=pointer+len; |
| 52 | if (newLen> size) { |
| 53 | flushBuffer(); |
| 54 | if (len>size) { |
| 55 | out.write(arg0,arg1,len); |
| 56 | return; |
| 57 | } |
| 58 | newLen=len; |
| 59 | } |
| 60 | System.arraycopy(arg0,arg1,buf,pointer,len); |
| 61 | pointer=newLen; |
| 62 | } |
| 63 | |
| 64 | private final void flushBuffer() throws IOException { |
| 65 | if (pointer>0) |
| 66 | out.write(buf,0,pointer); |
| 67 | pointer=0; |
| 68 | |
| 69 | } |
| 70 | |
| 71 | /** @inheritDoc */ |
| 72 | public void write(int arg0) throws IOException { |
| 73 | if (pointer>= size) { |
| 74 | flushBuffer(); |
| 75 | } |
| 76 | buf[pointer++]=(byte)arg0; |
| 77 | |
| 78 | } |
| 79 | |
| 80 | /** @inheritDoc */ |
| 81 | public void flush() throws IOException { |
| 82 | flushBuffer(); |
| 83 | out.flush(); |
| 84 | } |
| 85 | |
| 86 | /** @inheritDoc */ |
| 87 | public void close() throws IOException { |
| 88 | flush(); |
| 89 | } |
| 90 | |
| 91 | } |