Package eu.woolplatform.utils.io

Class BinaryWriter

java.lang.Object

eu.woolplatform.utils.io.BinaryWriter

public class BinaryWriter
extends Object

A binary writer can write elementary data types to an output stream. The written data can be read by a BinaryReader.

Constructor Summary

Constructors

Constructor	Description
BinaryWriter(OutputStream out)	Constructs a new binary writer that will write to the specified output stream.

Method Summary

Modifier and Type	Method	Description
void	writeBoolean(boolean b)	Writes the value of a boolean in one byte.
void	writeByte(byte b)	Writes a byte.
void	writeDouble(double d)	Writes the value of a double in 64 bits in big-endian order.
void	writeFloat(float f)	Writes the value of a float in 32 bits in big-endian order.
void	writeInt(int n)	Writes the value of an int as a 32-bit signed integer in big-endian order.
void	writeLong(long n)	Writes the value of a long as a 64-bit signed long in big-endian order.
void	writeShort(short n)	Writes the value of a short as a 16-bit signed short in big-endian order.
void	writeShortString(String s)	Writes a string.
void	writeString(String s)	Writes a string.
void	writeUnsignedByte(short n)	Writes the value of a short as an unsigned byte.
void	writeUnsignedInt(long n)	Writes the value of a long as a 32-bit unsigned int in big-endian order.
void	writeUnsignedShort(int n)	Writes the value of an int as a 16-bit unsigned short in big-endian order.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BinaryWriter

public BinaryWriter(OutputStream out)

Constructs a new binary writer that will write to the specified output stream.

Parameters:

out - the output stream

Method Detail

writeString

public void writeString(String s)
                 throws IOException

Writes a string. The string is encoded with UTF-8. This method first writes an integer with the length of the encoded string. Then it writes the encoded string.

Parameters:

s - the string

Throws:

IOException - if a writing error occurs

writeShortString

public void writeShortString(String s)
                      throws IOException

Writes a string. The string is encoded with UTF-8. This method first writes an unsigned short with the length of the encoded string. Then it writes the encoded string.

Parameters:

s - the string

Throws:

IOException - if a writing error occurs

writeByte

public void writeByte(byte b)
               throws IOException

Writes a byte.

Parameters:

b - the byte

Throws:

IOException - if a writing error occurs

writeUnsignedByte

public void writeUnsignedByte(short n)
                       throws IOException

Writes the value of a short as an unsigned byte. If the value does not fit in an unsigned byte, then this method throws an IOException.

Parameters:

n - the unsigned short value

Throws:

IOException - if the value does not fit in an unsigned byte or if a writing error occurs

writeShort

public void writeShort(short n)
                throws IOException

Writes the value of a short as a 16-bit signed short in big-endian order.

Parameters:

n - the short

Throws:

IOException - if a writing error occurs

writeUnsignedShort

public void writeUnsignedShort(int n)
                        throws IOException

Writes the value of an int as a 16-bit unsigned short in big-endian order. If the value does not fit in a 16-bit unsigned short, then this method throws an IOException.

Parameters:

n - the unsigned short value

Throws:

IOException - if the value does not fit in a 16-bit unsigned short or if a writing error occurs

writeInt

public void writeInt(int n)
              throws IOException

Writes the value of an int as a 32-bit signed integer in big-endian order.

Parameters:

n - the integer

Throws:

IOException - if a writing error occurs

writeUnsignedInt

public void writeUnsignedInt(long n)
                      throws IOException

Writes the value of a long as a 32-bit unsigned int in big-endian order. If the value does not fit in a 32-bit unsigned int, then this method throws an IOException.

Parameters:

n - the unsigned int value

Throws:

IOException - if the value does not fit in a 32-bit unsigned int or if a writing error occurs

writeLong

public void writeLong(long n)
               throws IOException

Writes the value of a long as a 64-bit signed long in big-endian order.

Parameters:

n - the long

Throws:

IOException - if a writing error occurs

writeFloat

public void writeFloat(float f)
                throws IOException

Writes the value of a float in 32 bits in big-endian order.

Parameters:

f - the float

Throws:

IOException - if a writing error occurs

writeDouble

public void writeDouble(double d)
                 throws IOException

Writes the value of a double in 64 bits in big-endian order.

Parameters:

d - the double

Throws:

IOException - if a writing error occurs

writeBoolean

public void writeBoolean(boolean b)
                  throws IOException

Writes the value of a boolean in one byte. It writes 1 for true, 0 for false.

Parameters:

b - the boolean

Throws:

IOException - if a writing error occurs