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Some libraries from Matthew Johnson: http://www.matthew.ath.cx/projects/java/
Modifications:
- including precompiled native C libraries (libunix-java) for architectures: arm, amd64 and i386
- UnixSocket/UnixServerSocket now implements closable (allows try-with-resources usage)
- Cleaned up code style
- Split test classes to test classpath
- Introduced JUnit
- Removed the whole CGI package, it should never ever been used these days
The newest version!
/*
* Java Hexdump Library
*
* Copyright (c) Matthew Johnson 2005
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* To Contact the author, please email [email protected]
*
*/
package cx.ath.matthew.utils;
import java.io.PrintStream;
public final class Hexdump {
public static final char[] HEX_CHARS = new char[] {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
private Hexdump() {
}
public static String toHex(byte[] buf) {
return toHex(buf, 0, buf.length);
}
public static String toHex(byte[] buf, int ofs, int len) {
StringBuffer sb = new StringBuffer();
int j = ofs + len;
for (int i = ofs; i < j; i++) {
if (i < buf.length) {
sb.append(HEX_CHARS[(buf[i] & 0xF0) >> 4]);
sb.append(HEX_CHARS[buf[i] & 0x0F]);
sb.append(' ');
} else {
sb.append(' ');
sb.append(' ');
sb.append(' ');
}
}
return sb.toString();
}
public static String toAscii(byte[] buf) {
return toAscii(buf, 0, buf.length);
}
public static String toAscii(byte[] buf, int ofs, int len) {
StringBuffer sb = new StringBuffer();
int j = ofs + len;
for (int i = ofs; i < j; i++) {
if (i < buf.length) {
if (20 <= buf[i] && 126 >= buf[i]) {
sb.append((char) buf[i]);
} else {
sb.append('.');
}
} else {
sb.append(' ');
}
}
return sb.toString();
}
public static String format(byte[] buf) {
return format(buf, 80);
}
public static String format(byte[] buf, int width) {
int bs = (width - 8) / 4;
int i = 0;
StringBuffer sb = new StringBuffer();
do {
for (int j = 0; j < 6; j++) {
sb.append(HEX_CHARS[(i << (j * 4) & 0xF00000) >> 20]);
}
sb.append('\t');
sb.append(toHex(buf, i, bs));
sb.append(' ');
sb.append(toAscii(buf, i, bs));
sb.append('\n');
i += bs;
} while (i < buf.length);
return sb.toString();
}
public static void print(byte[] buf) {
print(buf, System.err);
}
public static void print(byte[] buf, int width) {
print(buf, width, System.err);
}
public static void print(byte[] buf, int width, PrintStream out) {
out.print(format(buf, width));
}
public static void print(byte[] buf, PrintStream out) {
out.print(format(buf));
}
/**
* Returns a string which can be written to a Java source file as part
* of a static initializer for a byte array.
* Returns data in the format 0xAB, 0xCD, ....
* use like:
* javafile.print("byte[] data = {")
* javafile.print(Hexdump.toByteArray(data));
* javafile.println("};");
* @param buf byte buffer
* @return String
*/
public static String toByteArray(byte[] buf) {
return toByteArray(buf, 0, buf.length);
}
/**
* Returns a string which can be written to a Java source file as part
* of a static initializer for a byte array.
* Returns data in the format 0xAB, 0xCD, ....
* use like:
* javafile.print("byte[] data = {")
* javafile.print(Hexdump.toByteArray(data));
* javafile.println("};");
* @param buf byte buffer
* @param ofs offset
* @param len length
* @return String
*/
public static String toByteArray(byte[] buf, int ofs, int len) {
StringBuffer sb = new StringBuffer();
for (int i = ofs; i < len && i < buf.length; i++) {
sb.append('0');
sb.append('x');
sb.append(HEX_CHARS[(buf[i] & 0xF0) >> 4]);
sb.append(HEX_CHARS[buf[i] & 0x0F]);
if ((i + 1) < len && (i + 1) < buf.length) {
sb.append(',');
}
}
return sb.toString();
}
}
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