Byte handling utilities
5 April 1999 - functions to append standard types to byte arrays
functions to produce standard types from byte arrays
| Method from org.apache.bsf.util.event.generator.ByteUtility Detail: |
|---|
 public static byte[] addBytes(byte[] array,
byte[] value) {
if( null != array )
{
byte newarray[] = new byte[array.length + value.length];
System.arraycopy(array,0,newarray,0,array.length);
System.arraycopy(value,0,newarray,array.length,value.length);
array = newarray;
}
else
{
array = value;
}
return array;
}
|
public static byte[] addBytes(byte[] array,
byte value) {
if( null != array )
{
byte newarray[] = new byte[array.length + 1];
System.arraycopy(array,0,newarray,0,array.length);
newarray[newarray.length-1] = value;
array = newarray;
}
else
{
array = new byte[1];
array[0] = value;
}
return array;
} |
public static byte[] addBytes(byte[] array,
int value) {
if( null != array )
{
byte newarray[] = new byte[array.length + 3];
System.arraycopy(array,0,newarray,0,array.length);
newarray[newarray.length-3] = (byte) (( value > > 16 ) & 0xFF);
newarray[newarray.length-2] = (byte) (( value > > 8 ) & 0xFF);
newarray[newarray.length-1] = (byte) ( value & 0xFF);
array = newarray;
}
else
{
array = new byte[3];
array[0] = (byte) (( value > > 16 ) & 0xFF);
array[1] = (byte) (( value > > 8 ) & 0xFF);
array[2] = (byte) ( value & 0xFF);
}
return array;
} |
public static byte[] addBytes(byte[] array,
long value) {
if( null != array )
{
byte newarray[] = new byte[array.length + 4];
System.arraycopy(array,0,newarray,0,array.length);
newarray[newarray.length-4] = (byte) (( value > > 24 ) & 0xFF);
newarray[newarray.length-3] = (byte) (( value > > 16 ) & 0xFF);
newarray[newarray.length-2] = (byte) (( value > > 8 ) & 0xFF);
newarray[newarray.length-1] = (byte) ( value & 0xFF);
array = newarray;
}
else
{
array = new byte[4];
array[0] = (byte) (( value > > 24 ) & 0xFF);
array[1] = (byte) (( value > > 16 ) & 0xFF);
array[2] = (byte) (( value > > 8 ) & 0xFF);
array[3] = (byte) (value & 0xFF);
}
return array;
} |
public static byte[] addBytes(byte[] array,
String value) {
if( null != value )
{
if( null != array)
{
byte newarray[] = new byte[array.length + value.length()];
System.arraycopy(array,0,newarray,0,array.length);
System.arraycopy(value.getBytes(),0,newarray,array.length,value.length());
array = newarray;
}
else
{
array = value.getBytes();
}
}
return array;
} |
public static byte[] addBytes(byte[] array,
short value) {
if( null != array)
{
byte newarray[] = new byte[array.length + 2];
System.arraycopy(array,0,newarray,0,array.length);
newarray[newarray.length-2] = (byte) (( value > > 8 ) & 0xFF);
newarray[newarray.length-1] = (byte) ( value & 0xFF);
array = newarray;
}
else
{
array = new byte[2];
array[0] = (byte) (( value > > 8 ) & 0xFF);
array[1] = (byte) ( value & 0xFF);
}
return array;
} |
public static double byteArrayToDouble(byte[] value) {
byte high[] = new byte[4];
byte low[] = new byte[4];
high[0] = value[0];
high[1] = value[1];
high[2] = value[2];
high[3] = value[3];
low[0] = value[4];
low[1] = value[5];
low[2] = value[6];
low[3] = value[7];
return byteArrayToDouble(high,low);
} |
public static double byteArrayToDouble(byte[] high,
byte[] low) {
double temp = 0;
// high bytes
temp += (((long)high[0]) & 0xFF) < < 56;
temp += (((long)high[1]) & 0xFF) < < 48;
temp += (((long)high[2]) & 0xFF) < < 40;
temp += (((long)high[3]) & 0xFF) < < 32;
// low bytes
temp += (((long)low[0]) & 0xFF) < < 24;
temp += (((long)low[1]) & 0xFF) < < 16;
temp += (((long)low[2]) & 0xFF) < < 8;
temp += (((long)low[3]) & 0xFF);
return temp;
} |
public static float byteArrayToFloat(byte[] value) {
float temp = 0;
temp += (((int)value[0]) & 0xFF) < < 24;
temp += (((int)value[1]) & 0xFF) < < 16;
temp += (((int)value[2]) & 0xFF) < < 8;
temp += (((int)value[3]) & 0xFF);
return temp;
} |
public static int byteArrayToInt(byte[] value) {
int temp = 0;
temp += (((int)value[0]) & 0xFF) < < 24;
temp += (((int)value[1]) & 0xFF) < < 16;
temp += (((int)value[2]) & 0xFF) < < 8;
temp += (((int)value[3]) & 0xFF);
return temp;
} |
public static long byteArrayToLong(byte[] value) {
byte high[] = new byte[4];
byte low[] = new byte[4];
high[0] = value[0];
high[1] = value[1];
high[2] = value[2];
high[3] = value[3];
low[0] = value[4];
low[1] = value[5];
low[2] = value[6];
low[3] = value[7];
return byteArrayToLong(high,low);
} |
public static long byteArrayToLong(byte[] high,
byte[] low) {
long temp = 0;
// high bytes
temp += (((long)high[0]) & 0xFF) < < 56;
temp += (((long)high[1]) & 0xFF) < < 48;
temp += (((long)high[2]) & 0xFF) < < 40;
temp += (((long)high[3]) & 0xFF) < < 32;
// low bytes
temp += (((long)low[0]) & 0xFF) < < 24;
temp += (((long)low[1]) & 0xFF) < < 16;
temp += (((long)low[2]) & 0xFF) < < 8;
temp += (((long)low[3]) & 0xFF);
return temp;
} |
public static short byteArrayToShort(byte[] value) {
short temp = 0;
temp += (((int)value[0]) & 0xFF) < < 8;
temp += (((int)value[1]) & 0xFF);
return temp;
} |
public static String byteToHexString(byte value) {
String temp = null;
switch( (value & 0xF0) > > 4 )
{
case 0:
temp = "0";
break;
case 1:
temp = "1";
break;
case 2:
temp = "2";
break;
case 3:
temp = "3";
break;
case 4:
temp = "4";
break;
case 5:
temp = "5";
break;
case 6:
temp = "6";
break;
case 7:
temp = "7";
break;
case 8:
temp = "8";
break;
case 9:
temp = "9";
break;
case 10:
temp = "A";
break;
case 11:
temp = "B";
break;
case 12:
temp = "C";
break;
case 13:
temp = "D";
break;
case 14:
temp = "E";
break;
case 15:
temp = "F";
break;
}
switch( (value & 0x0F) )
{
case 0:
temp += "0";
break;
case 1:
temp += "1";
break;
case 2:
temp += "2";
break;
case 3:
temp += "3";
break;
case 4:
temp += "4";
break;
case 5:
temp += "5";
break;
case 6:
temp += "6";
break;
case 7:
temp += "7";
break;
case 8:
temp += "8";
break;
case 9:
temp += "9";
break;
case 10:
temp += "A";
break;
case 11:
temp += "B";
break;
case 12:
temp += "C";
break;
case 13:
temp += "D";
break;
case 14:
temp += "E";
break;
case 15:
temp += "F";
break;
}
return temp;
} |
org.apache.bsf.util.event.generator.ByteUtility
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