net.sf.btw.commons
Class StreamUtils

java.lang.Object
  net.sf.btw.commons.StreamUtils

public final class StreamUtils
extends Object

Utilities for working with streams.

Author:

Martin Vysny

Method Summary

static byte[]	readByteArray(InputStream in) Reads the byte array from the input stream.
static int	readPackedInt(InputStream in) Reads the number in a packed format.
static byte[]	stringToByteArray(String string) Writes given string to data output stream as a string.
static void	writeByteArray(byte[] bytes, OutputStream out) Writes the byte array to the output stream.
static void	writePackedInt(int number, OutputStream out) Writes the number in a packed format.

Methods inherited from class java.lang.Object

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

Method Detail

writeByteArray

public static void writeByteArray(byte[] bytes,
                                  OutputStream out)
                           throws IOException

Writes the byte array to the output stream.

Parameters:

bytes - the bytes to write. Handles null array correctly.

out - writes to this stream.

Throws:

IOException - if write fails.

readByteArray

public static byte[] readByteArray(InputStream in)
                            throws IOException

Reads the byte array from the input stream. The array must have been written by writeByteArray(byte[], OutputStream).

Parameters:

in - reads from this stream.

Returns:

byte array, may be null if a null array was written.

Throws:

IOException - if read fails.

writePackedInt

public static void writePackedInt(int number,
                                  OutputStream out)
                           throws IOException

Writes the number in a packed format. The number may occupy 1-5 bytes depending on its value.

Parameters:

number - the number to write

out - the output stream.

Throws:

IOException

readPackedInt

public static int readPackedInt(InputStream in)
                         throws IOException

Reads the number in a packed format. The number may occupy 1-5 bytes depending on its value.

Parameters:

in - the input stream.

Returns:

the number.

Throws:

IOException

stringToByteArray

public static byte[] stringToByteArray(String string)

Writes given string to data output stream as a string. This method is incompatible with String.getBytes(); use DataInputStream.readUTF() instead.

Parameters:

string - string to convert. Cannot be null.

Returns:

array of bytes.