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commons-io-1.4.jar - Apache Commons IO
commons-io-1.4.jar is the JAR file for Commons IO 1.4, which is a library of utilities to assist with developing IO functionality.
JAR File Size and Download Location:
JAR name: commons-io.jar, commons-io-1.4.jar Target JDK version: 1.3 Dependency: None File size: 109043 bytes Date modified: 16-Jan-2008 Download: Apache Commons IO Website
✍: FYIcenter.com
⏎ org/apache/commons/io/HexDump.java
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.io; import java.io.IOException; import java.io.OutputStream; /** * Dumps data in hexadecimal format. * <p> * Provides a single function to take an array of bytes and display it * in hexadecimal form. * <p> * Origin of code: POI. * * @author Scott Sanders * @author Marc Johnson * @version $Id: HexDump.java 596667 2007-11-20 13:50:14Z niallp $ */ public class HexDump { /** * Instances should NOT be constructed in standard programming. */ public HexDump() { super(); } /** * Dump an array of bytes to an OutputStream. * * @param data the byte array to be dumped * @param offset its offset, whatever that might mean * @param stream the OutputStream to which the data is to be * written * @param index initial index into the byte array * * @throws IOException is thrown if anything goes wrong writing * the data to stream * @throws ArrayIndexOutOfBoundsException if the index is * outside the data array's bounds * @throws IllegalArgumentException if the output stream is null */ public static void dump(byte[] data, long offset, OutputStream stream, int index) throws IOException, ArrayIndexOutOfBoundsException, IllegalArgumentException { if ((index < 0) || (index >= data.length)) { throw new ArrayIndexOutOfBoundsException( "illegal index: " + index + " into array of length " + data.length); } if (stream == null) { throw new IllegalArgumentException("cannot write to nullstream"); } long display_offset = offset + index; StringBuffer buffer = new StringBuffer(74); for (int j = index; j < data.length; j += 16) { int chars_read = data.length - j; if (chars_read > 16) { chars_read = 16; } dump(buffer, display_offset).append(' '); for (int k = 0; k < 16; k++) { if (k < chars_read) { dump(buffer, data[k + j]); } else { buffer.append(" "); } buffer.append(' '); } for (int k = 0; k < chars_read; k++) { if ((data[k + j] >= ' ') && (data[k + j] < 127)) { buffer.append((char) data[k + j]); } else { buffer.append('.'); } } buffer.append(EOL); stream.write(buffer.toString().getBytes()); stream.flush(); buffer.setLength(0); display_offset += chars_read; } } /** * The line-separator (initializes to "line.separator" system property. */ public static final String EOL = System.getProperty("line.separator"); private static final char[] _hexcodes = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; private static final int[] _shifts = { 28, 24, 20, 16, 12, 8, 4, 0 }; /** * Dump a long value into a StringBuffer. * * @param _lbuffer the StringBuffer to dump the value in * @param value the long value to be dumped * @return StringBuffer containing the dumped value. */ private static StringBuffer dump(StringBuffer _lbuffer, long value) { for (int j = 0; j < 8; j++) { _lbuffer .append(_hexcodes[((int) (value >> _shifts[j])) & 15]); } return _lbuffer; } /** * Dump a byte value into a StringBuffer. * * @param _cbuffer the StringBuffer to dump the value in * @param value the byte value to be dumped * @return StringBuffer containing the dumped value. */ private static StringBuffer dump(StringBuffer _cbuffer, byte value) { for (int j = 0; j < 2; j++) { _cbuffer.append(_hexcodes[(value >> _shifts[j + 6]) & 15]); } return _cbuffer; } }
⏎ org/apache/commons/io/HexDump.java
Or download all of them as a single archive file:
File name: commons-io-1.4-sources.jar File size: 280834 bytes Release date: 2008-01-16 Download
⇒ Using commons-io.jar in Java Code
2018-10-27, 47225👍, 0💬
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