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/*-
* Copyright (C) 2006 Erik Larsson
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
package org.catacombae.rarx;
public class Util {
public static int sectorSize = 0x800;
public static String byteArrayToHexString(byte[] array) {
return byteArrayToHexString(array, 0, array.length);
}
public static String byteArrayToHexString(byte[] array, int offset, int length) {
String result = "";
for(int i = offset; i < (offset+length); ++i) {
byte b = array[i];
String currentHexString = Integer.toHexString(b & 0xFF);
if(currentHexString.length() == 1)
currentHexString = "0" + currentHexString;
result += currentHexString;
}
return result;
}
public static String toHexStringBE(int[] array) {
return toHexStringBE(array, 0, array.length);
}
public static String toHexStringBE(int[] array, int offset, int length) {
StringBuilder result = new StringBuilder();
for(int i : array)
result.append(toHexStringBE(i));
return result.toString();
}
public static String toHexStringLE(byte n) { return byteArrayToHexString(toByteArrayLE(n)); }
public static String toHexStringLE(short n) { return byteArrayToHexString(toByteArrayLE(n)); }
public static String toHexStringLE(int n) { return byteArrayToHexString(toByteArrayLE(n)); }
public static String toHexStringLE(long n) { return byteArrayToHexString(toByteArrayLE(n)); }
public static String toHexStringBE(byte n) { return byteArrayToHexString(toByteArrayBE(n)); }
public static String toHexStringBE(short n) { return byteArrayToHexString(toByteArrayBE(n)); }
public static String toHexStringBE(int n) { return byteArrayToHexString(toByteArrayBE(n)); }
public static String toHexStringBE(long n) { return byteArrayToHexString(toByteArrayBE(n)); }
public static byte[] invert(byte[] array) {
byte[] newArray = new byte[array.length];
for(int i = 0; i < array.length; ++i)
newArray[newArray.length-i-1] = array[i];
return newArray;
}
public static int readIntLE(byte[] data) {
return readIntLE(data, 0);
}
public static int readIntLE(byte[] data, int offset) {
return ((data[offset+3] & 0xFF) << 24 |
(data[offset+2] & 0xFF) << 16 |
(data[offset+1] & 0xFF) << 8 |
(data[offset+0] & 0xFF) << 0);
}
public static short readShortLE(byte[] data) {
return readShortLE(data, 0);
}
public static short readShortLE(byte[] data, int offset) {
return (short) ((data[offset+1] & 0xFF) << 8 |
(data[offset+0] & 0xFF) << 0);
}
public static byte readByteLE(byte[] data) {
return readByteLE(data, 0);
}
public static byte readByteLE(byte[] data, int offset) {
return data[offset];
}
public static byte[] toByteArrayLE(byte b) {
byte[] result = new byte[1];
result[0] = b;
return result;
}
public static byte[] toByteArrayLE(short s) {
byte[] result = new byte[2];
result[0] = (byte) ((s >> 0) & 0xFF);
result[1] = (byte) ((s >> 8) & 0xFF);
return result;
}
public static byte[] toByteArrayLE(int i) {
byte[] result = new byte[4];
result[0] = (byte) ((i >> 0) & 0xFF);
result[1] = (byte) ((i >> 8) & 0xFF);
result[2] = (byte) ((i >> 16) & 0xFF);
result[3] = (byte) ((i >> 24) & 0xFF);
return result;
}
public static byte[] toByteArrayLE(long l) {
byte[] result = new byte[8];
result[0] = (byte) ((l >> 0) & 0xFF);
result[1] = (byte) ((l >> 8) & 0xFF);
result[2] = (byte) ((l >> 16) & 0xFF);
result[3] = (byte) ((l >> 24) & 0xFF);
result[4] = (byte) ((l >> 32) & 0xFF);
result[5] = (byte) ((l >> 40) & 0xFF);
result[6] = (byte) ((l >> 48) & 0xFF);
result[7] = (byte) ((l >> 56) & 0xFF);
return result;
}
public static byte[] toByteArrayBE(byte b) {
byte[] result = new byte[1];
result[0] = b;
return result;
}
public static byte[] toByteArrayBE(short s) {
byte[] result = new byte[2];
result[0] = (byte) ((s >> 8) & 0xFF);
result[1] = (byte) ((s >> 0) & 0xFF);
return result;
}
public static byte[] toByteArrayBE(int i) {
byte[] result = new byte[4];
result[0] = (byte) ((i >> 24) & 0xFF);
result[1] = (byte) ((i >> 16) & 0xFF);
result[2] = (byte) ((i >> 8) & 0xFF);
result[3] = (byte) ((i >> 0) & 0xFF);
return result;
}
public static byte[] toByteArrayBE(long l) {
byte[] result = new byte[8];
result[0] = (byte) ((l >> 56) & 0xFF);
result[1] = (byte) ((l >> 48) & 0xFF);
result[2] = (byte) ((l >> 40) & 0xFF);
result[3] = (byte) ((l >> 32) & 0xFF);
result[4] = (byte) ((l >> 24) & 0xFF);
result[5] = (byte) ((l >> 16) & 0xFF);
result[6] = (byte) ((l >> 8) & 0xFF);
result[7] = (byte) ((l >> 0) & 0xFF);
return result;
}
public static boolean zeroed(byte[] ba) {
for(byte b : ba)
if(b != 0)
return false;
return true;
}
public static void zero(byte[] ba) {
set(ba, 0, ba.length, (byte)0);
}
public static void zero(byte[] ba, int offset, int length) {
set(ba, offset, length, (byte)0);
}
public static void zero(short[] ba) {
set(ba, 0, ba.length, (short)0);
}
public static void zero(short[] ba, int offset, int length) {
set(ba, offset, length, (short)0);
}
public static void zero(int[] ba) {
set(ba, 0, ba.length, (int)0);
}
public static void zero(int[] ba, int offset, int length) {
set(ba, offset, length, (int)0);
}
public static void zero(long[] ba) {
set(ba, 0, ba.length, (long)0);
}
public static void zero(long[] ba, int offset, int length) {
set(ba, offset, length, (long)0);
}
public static void set(byte[] ba, int offset, int length, byte value) {
for(int i = offset; i < length; ++i)
ba[i] = value;
}
public static void set(short[] ba, int offset, int length, short value) {
for(int i = offset; i < length; ++i)
ba[i] = value;
}
public static void set(int[] ba, int offset, int length, int value) {
for(int i = offset; i < length; ++i)
ba[i] = value;
}
public static void set(long[] ba, int offset, int length, long value) {
for(int i = offset; i < length; ++i)
ba[i] = value;
}
public static byte[] createCopy(byte[] data) {
return createCopy(data, 0, data.length);
}
public static byte[] createCopy(byte[] data, int offset, int length) {
byte[] copy = new byte[length];
System.arraycopy(data, offset, copy, 0, length);
return copy;
}
public static boolean arraysEqual(boolean[] a, boolean[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(a[i] != b[i])
return false;
return true;
}
}
public static boolean arraysEqual(byte[] a, byte[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(a[i] != b[i])
return false;
return true;
}
}
public static boolean arraysEqual(char[] a, char[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(a[i] != b[i])
return false;
return true;
}
}
public static boolean arraysEqual(short[] a, short[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(a[i] != b[i])
return false;
return true;
}
}
public static boolean arraysEqual(int[] a, int[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(a[i] != b[i])
return false;
return true;
}
}
public static boolean arraysEqual(long[] a, long[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(a[i] != b[i])
return false;
return true;
}
}
public static boolean arraysEqual(Object[] a, Object[] b) {
if(a.length != b.length)
return false;
else {
for(int i = 0; i < a.length; ++i)
if(!a[i].equals(b[i]))
return false;
return true;
}
}
public static long pow(long a, long b) {
if(b < 0) throw new IllegalArgumentException("b can not be negative");
long result = 1;
for(long i = 0; i < b; ++i)
result *= a;
return result;
}
public static int strlen(byte[] data) {
int length = 0;
for(byte b : data) {
if(b == 0)
break;
else
++length;
}
return length;
}
public static boolean getBit(long data, int bitNumber) {
return ((data >>> bitNumber) & 0x1) == 0x1;
}
}
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