File LineWrapperOutputStream.java
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38% of files have more coverage
Classes
| Class | Line # | Actions | |||||
|---|---|---|---|---|---|---|---|
| LineWrapperOutputStream | 32 | 23 | 0% | 9 | 5 |
Contributing tests
This file is covered by 10 tests.
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Source view
| 1 | /* | |
| 2 | * See the NOTICE file distributed with this work for additional | |
| 3 | * information regarding copyright ownership. | |
| 4 | * | |
| 5 | * This is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU Lesser General Public License as | |
| 7 | * published by the Free Software Foundation; either version 2.1 of | |
| 8 | * the License, or (at your option) any later version. | |
| 9 | * | |
| 10 | * This software is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * Lesser General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU Lesser General Public | |
| 16 | * License along with this software; if not, write to the Free | |
| 17 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
| 18 | * 02110-1301 USA, or see the FSF site: http://www.fsf.org. | |
| 19 | */ | |
| 20 | package org.xwiki.crypto.internal; | |
| 21 | ||
| 22 | import java.io.FilterOutputStream; | |
| 23 | import java.io.IOException; | |
| 24 | import java.io.OutputStream; | |
| 25 | ||
| 26 | /** | |
| 27 | * Filter output stream that wraps line after a fixed number of bytes. | |
| 28 | * | |
| 29 | * @version $Id: 23ad749c116f120eb8edaae13da4a292fa792071 $ | |
| 30 | * @since 5.4M1 | |
| 31 | */ | |
| 32 | public class LineWrapperOutputStream extends FilterOutputStream | |
| 33 | { | |
| 34 | /** New line bytes used to wrap lines. */ | |
| 35 | private static final byte[] NEWLINE = System.getProperty("line.separator", "\n").getBytes(); | |
| 36 | ||
| 37 | /** A one byte buffer to optimize one byte writing. */ | |
| 38 | private byte[] oneByte = new byte[1]; | |
| 39 | ||
| 40 | /** The count of bytes at which wrapping should occur. */ | |
| 41 | private final int wrapAt; | |
| 42 | ||
| 43 | /** The count of bytes on the last written line. */ | |
| 44 | private int count; | |
| 45 | ||
| 46 | /** | |
| 47 | * Constructs a LineWrapperOutputStream from an OutputStream and a line size. | |
| 48 | * | |
| 49 | * @param outputStream the output stream. | |
| 50 | * @param wrapAt the count of bytes at which wrapping should occur. | |
| 51 | */ | |
| 52 | 13 |  public LineWrapperOutputStream(OutputStream outputStream, int wrapAt) |
| 53 | { | |
| 54 | 13 | super(outputStream); |
| 55 | 13 | this.wrapAt = wrapAt; |
| 56 | 13 | this.count = 0; |
| 57 | } | |
| 58 | ||
| 59 | 2266 | @Override |
| 60 | public void write(byte[] bytes, int offset, int length) throws IOException | |
| 61 | { | |
| 62 | 2266 | if ((offset | length | (bytes.length - (length + offset)) | (offset + length)) < 0) { |
| 63 | 0 | throw new IndexOutOfBoundsException(); |
| 64 | } | |
| 65 | ||
| 66 | 2266 | if (length > 0) { |
| 67 | 2266 | if (this.count + length >= this.wrapAt) { |
| 68 | 37 | int off = offset; |
| 69 | 37 | int len = length; |
| 70 | 37 | int curlen = this.wrapAt - this.count; |
| 71 | 37 | do { |
| 72 | 37 | this.out.write(bytes, off, curlen); |
| 73 | 37 | this.out.write(NEWLINE, 0, NEWLINE.length); |
| 74 | 37 | off += curlen; |
| 75 | 37 | len -= curlen; |
| 76 | 37 | curlen = (len > this.wrapAt) ? this.wrapAt : len; |
| 77 | 37 | } while (curlen == this.wrapAt); |
| 78 | 37 | if (curlen > 0) { |
| 79 | 2 | this.out.write(bytes, off, curlen); |
| 80 | } | |
| 81 | 37 | this.count = curlen; |
| 82 | } else { | |
| 83 | 2229 | this.count += length; |
| 84 | 2229 | this.out.write(bytes, offset, length); |
| 85 | } | |
| 86 | } | |
| 87 | } | |
| 88 | ||
| 89 | 2257 | @Override |
| 90 | public void write(int i) throws IOException | |
| 91 | { | |
| 92 | 2257 | this.oneByte[0] = (byte) i; |
| 93 | 2257 | write(this.oneByte, 0, 1); |
| 94 | } | |
| 95 | } |