|
|
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
public final class ByteUtils {
private static final char[] HEX_CHARS = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
public final static short UNSIGNED_MAX_VALUE = (Byte.MAX_VALUE * 2) + 1;
public static short toUnsigned(byte b)
{return (short) (b < 0 ? (UNSIGNED_MAX_VALUE + 1) + b : b);}
public static String toHexAscii(byte b)
{
StringWriter sw = new StringWriter(2);
addHexAscii(b, sw);
return sw.toString();
}
public static String toHexAscii(byte[] bytes)
{
int len = bytes.length;
StringWriter sw = new StringWriter(len * 2);
for (int i = 0; i < len; ++i)
addHexAscii(bytes, sw);
return sw.toString();
}
public static byte[] byteMerger(byte[] byte_1, byte[] byte_2){
byte[] byte_3 = new byte[byte_1.length+byte_2.length];
System.arraycopy(byte_1, 0, byte_3, 0, byte_1.length);
System.arraycopy(byte_2, 0, byte_3, byte_1.length, byte_2.length);
return byte_3;
}
public static String toHexString(byte[] var0) {
String var1 = "";
for(int var2 = 0; var2 < var0.length; ++var2) {
var1 = var1 + HEX_CHARS[var0[var2] >>> 4 & 15];
var1 = var1 + HEX_CHARS[var0[var2] & 15];
}
return var1;
}
public static byte[] reverse(byte[] bytes)
{
int len = bytes.length;
byte[] newBytes = new byte[len];
for(int i=0;i<len;i++){
newBytes = bytes[len-1-i];
}
return newBytes;
}
public static byte[] fromHexAscii(String s) throws NumberFormatException
{
try
{
int len = s.length();
if ((len % 2) != 0)
throw new NumberFormatException("Hex ascii must be exactly two digits per byte.");
int out_len = len / 2;
byte[] out = new byte[out_len];
int i = 0;
StringReader sr = new StringReader(s);
while (i < out_len)
{
int val = (16 * fromHexDigit(sr.read())) + fromHexDigit(sr.read());
out[i++] = (byte) val;
}
return out;
}
catch (IOException e)
{throw new InternalError("IOException reading from StringReader?!?!");}
}
public static byte[] fromHexString(String var0) {
char[] var1 = var0.toUpperCase().toCharArray();
int var2 = 0;
for(int var3 = 0; var3 < var1.length; ++var3) {
if(var1[var3] >= 48 && var1[var3] <= 57 || var1[var3] >= 65 && var1[var3] <= 70) {
++var2;
}
}
byte[] var6 = new byte[var2 + 1 >> 1];
int var4 = var2 & 1;
for(int var5 = 0; var5 < var1.length; ++var5) {
if(var1[var5] >= 48 && var1[var5] <= 57) {
var6[var4 >> 1] = (byte)(var6[var4 >> 1] << 4);
var6[var4 >> 1] = (byte)(var6[var4 >> 1] | var1[var5] - 48);
} else {
if(var1[var5] < 65 || var1[var5] > 70) {
continue;
}
var6[var4 >> 1] = (byte)(var6[var4 >> 1] << 4);
var6[var4 >> 1] = (byte)(var6[var4 >> 1] | var1[var5] - 65 + 10);
}
++var4;
}
return var6;
}
|
|
