// Copyright 2001-2005, FreeHEP.
package org.freehep.util.io;
import java.io.DataOutput;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UTFDataFormatException;
/**
* Class to write bytes and pairs of bytes in both little and big endian order.
*
* @author Mark Donszelmann
* @author Charles Loomis
* @version $Id: ByteOrderOutputStream.java 8584 2006-08-10 23:06:37Z duns $
*/
public class ByteOrderOutputStream extends BitOutputStream implements
DataOutput {
protected boolean little;
protected int written;
/**
* Create a (Big Endian) Byte Order output stream from given stream
*
* @param out stream to write to
*/
public ByteOrderOutputStream(OutputStream out) {
this(out, false);
}
/**
* Create a Byte Order output stream from the given stream
*
* @param out stream to write to
* @param littleEndian true if stream should be little endian
*/
public ByteOrderOutputStream(OutputStream out, boolean littleEndian) {
super(out);
little = littleEndian;
written = 0;
}
/**
* @return number of written bytes
* @throws IOException if write fails FIXME, should this throw an exception ?
*/
public int size() throws IOException {
return written;
}
public synchronized void write(int b) throws IOException {
super.write(b);
written++;
}
public void writeBoolean(boolean b) throws IOException {
if (b) {
write(1);
} else {
write(0);
}
}
public void writeChar(int c) throws IOException {
if (little) {
write(c & 0xFF);
write((c >>> 8) & 0xFF);
} else {
write((c >>> 8) & 0xFF);
write(c & 0xFF);
}
}
/**
* Write a signed byte.
*/
public void writeByte(int b) throws IOException {
byteAlign();
write(b);
}
/**
* Writes array of bytes
*
* @param bytes byte array to be written
* @throws IOException if write fails
*/
public void writeByte(byte[] bytes) throws IOException {
byteAlign();
for (int i = 0; i < bytes.length; i++) {
write(bytes[i]);
}
}
/**
* Write an unsigned byte.
*
* @param ub byte to write
* @throws IOException if write fails
*/
public void writeUnsignedByte(int ub) throws IOException {
byteAlign();
write(ub);
}
/**
* Write an array of unsigned bytes.
*
* @param bytes int array to write as bytes
* @throws IOException if write fails
*/
public void writeUnsignedByte(int[] bytes) throws IOException {
byteAlign();
for (int i = 0; i < bytes.length; i++) {
write(bytes[i]);
}
}
/**
* Write a signed short.
*/
public void writeShort(int s) throws IOException {
byteAlign();
if (little) {
write(s & 0xFF);
write((s >>> 8) & 0xFF);
} else {
write((s >>> 8) & 0xFF);
write(s & 0xFF);
}
}
/**
* Write an array of shorts.
*
* @param shorts short array to write
* @throws IOException if write fails
*/
public void writeShort(short[] shorts) throws IOException {
for (int i = 0; i < shorts.length; i++) {
writeShort(shorts[i]);
}
}
/**
* Write an unsigned short.
*
* @param s int to write as unsigned short
* @throws IOException if write fails
*/
public void writeUnsignedShort(int s) throws IOException {
byteAlign();
if (little) {
write(s & 0xFF);
write((s >>> 8) & 0xFF);
} else {
write((s >>> 8) & 0xFF);
write(s & 0xFF);
}
}
/**
* Write an array of unsigned shorts.
*
* @param shorts int array to write as unsigned shorts
* @throws IOException if write fails
*/
public void writeUnsignedShort(int[] shorts) throws IOException {
for (int i = 0; i < shorts.length; i++) {
writeUnsignedShort(shorts[i]);
}
}
/**
* Write a signed integer.
*/
public void writeInt(int i) throws IOException {
if (little) {
write(i & 0xFF);
write((i >>> 8) & 0xFF);
write((i >>> 16) & 0xFF);
write((i >>> 24) & 0xFF);
} else {
write((i >>> 24) & 0xFF);
write((i >>> 16) & 0xFF);
write((i >>> 8) & 0xFF);
write(i & 0xFF);
}
}
/**
* Write an array of ints
*
* @param ints int array to write
* @throws IOException if write fails
*/
public void writeInt(int[] ints) throws IOException {
for (int i = 0; i < ints.length; i++) {
writeInt(ints[i]);
}
}
/**
* Write an unsigned integer.
*
* @param i long to write as unsigned int
* @throws IOException if write fails
*/
public void writeUnsignedInt(long i) throws IOException {
if (little) {
write((int) (i & 0xFF));
write((int) ((i >>> 8) & 0xFF));
write((int) ((i >>> 16) & 0xFF));
write((int) ((i >>> 24) & 0xFF));
} else {
write((int) ((i >>> 24) & 0xFF));
write((int) ((i >>> 16) & 0xFF));
write((int) ((i >>> 8) & 0xFF));
write((int) (i & 0xFF));
}
}
/**
* Write an array of unsigned ints
*
* @param ints long array to write as unsigned ints
* @throws IOException if write fails
*/
public void writeUnsignedInt(long[] ints) throws IOException {
for (int i = 0; i < ints.length; i++) {
writeUnsignedInt(ints[i]);
}
}
public void writeLong(long l) throws IOException {
if (little) {
write((int) (l & 0xFF));
write((int) ((l >>> 8) & 0xFF));
write((int) ((l >>> 16) & 0xFF));
write((int) ((l >>> 24) & 0xFF));
write((int) ((l >>> 32) & 0xFF));
write((int) ((l >>> 40) & 0xFF));
write((int) ((l >>> 48) & 0xFF));
write((int) ((l >>> 56) & 0xFF));
} else {
write((int) ((l >>> 56) & 0xFF));
write((int) ((l >>> 48) & 0xFF));
write((int) ((l >>> 40) & 0xFF));
write((int) ((l >>> 32) & 0xFF));
write((int) ((l >>> 24) & 0xFF));
write((int) ((l >>> 16) & 0xFF));
write((int) ((l >>> 8) & 0xFF));
write((int) (l & 0xFF));
}
}
public void writeFloat(float f) throws IOException {
writeInt(Float.floatToIntBits(f));
}
public void writeDouble(double d) throws IOException {
writeLong(Double.doubleToLongBits(d));
}
public void writeBytes(String s) throws IOException {
for (int i = 0; i < s.length(); i++) {
writeByte(s.charAt(i));
}
}
public void writeChars(String s) throws IOException {
for (int i = 0; i < s.length(); i++) {
writeChar(s.charAt(i));
}
}
/**
* Write a string (UTF)
*
* @param s string to write
* @throws IOException if write fails
*/
public void writeString(String s) throws IOException {
writeUTF(s);
}
public void writeUTF(String s) throws IOException {
writeUTF(s, this);
}
/**
* Write an ascii-z (0 terminated c-string).
*
* @param s string to write
* @throws IOException if write fails
*/
public void writeAsciiZString(String s) throws IOException {
writeBytes(s);
writeByte(0);
}
/**
* Write a UTF string to the data output stream. This method should have
* been in DataOutputStream, but is not visible.
*
* @param s string to write
* @param dos stream to write to
* @throws IOException if write fails
*/
//
public static void writeUTF(String s, DataOutput dos) throws IOException {
int strlen = s.length();
int utflen = 0;
char[] charr = new char[strlen];
int c, count = 0;
s.getChars(0, strlen, charr, 0);
for (int i = 0; i < strlen; i++) {
c = charr[i];
if ((c >= 0x0001) && (c <= 0x007F)) {
utflen++;
} else if (c > 0x07FF) {
utflen += 3;
} else {
utflen += 2;
}
}
if (utflen > 65535)
throw new UTFDataFormatException();
byte[] bytearr = new byte[utflen + 2];
bytearr[count++] = (byte) ((utflen >>> 8) & 0xFF);
bytearr[count++] = (byte) ((utflen >>> 0) & 0xFF);
for (int i = 0; i < strlen; i++) {
c = charr[i];
if ((c >= 0x0001) && (c <= 0x007F)) {
bytearr[count++] = (byte) c;
} else if (c > 0x07FF) {
bytearr[count++] = (byte) (0xE0 | ((c >> 12) & 0x0F));
bytearr[count++] = (byte) (0x80 | ((c >> 6) & 0x3F));
bytearr[count++] = (byte) (0x80 | ((c >> 0) & 0x3F));
} else {
bytearr[count++] = (byte) (0xC0 | ((c >> 6) & 0x1F));
bytearr[count++] = (byte) (0x80 | ((c >> 0) & 0x3F));
}
}
dos.write(bytearr);
}
}
Ads help maintain this website.