Package org.apache.qpid.protonj2.codec.decoders

Class ProtonStreamUtils

java.lang.Object

org.apache.qpid.protonj2.codec.decoders.ProtonStreamUtils

public abstract class ProtonStreamUtils
extends Object

Set of Utility methods useful when dealing with byte arrays and other primitive types.

Constructor Summary

Constructors

Constructor	Description
ProtonStreamUtils()

Method Summary

Modifier and Type	Method	Description
static byte	readByte(InputStream stream)	Reads a single byte from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static byte[]	readBytes(InputStream stream, int length)	Reads the given number of bytes from the provided InputStream into an array and return that to the caller.
static double	readDouble(InputStream stream)	Reads a double value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static byte	readEncodingCode(InputStream stream)	Reads a single byte from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static float	readFloat(InputStream stream)	Reads a float value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static int	readInt(InputStream stream)	Reads a integer value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static long	readLong(InputStream stream)	Reads a long value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static short	readShort(InputStream stream)	Reads a short value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.
static InputStream	reset(InputStream stream)	Attempts to reset the provided InputStream to a previously marked point.
static InputStream	skipBytes(InputStream stream, long amount)	Attempts to skip the given number of bytes from the provided InputStream instance and throws a DecodeException if an error occurs during the skip.
static OutputStream	writeByte(byte value, OutputStream stream)	Write the given Byte to the target OutputStream.
static OutputStream	writeInt(int value, OutputStream stream)	Write the given Integer to the target OutputStream.
static OutputStream	writeLong(long value, OutputStream stream)	Write the given Long to the target OutputStream.
static OutputStream	writeShort(short value, OutputStream stream)	Write the given Short to the target OutputStream.

Methods inherited from class java.lang.Object

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

Constructor Details

ProtonStreamUtils

public ProtonStreamUtils()

Method Details

writeByte

public static OutputStream writeByte(byte value,
 OutputStream stream)
                              throws EncodeException

Write the given Byte to the target OutputStream.

Parameters:

value - the value to write to the OutputStream.

stream - the OutputStream where the target value is to be written.

Returns:

the given OutputStream instance.

Throws:

EncodeException - if an error occurs while writing to the target OutputStream.

writeShort

public static OutputStream writeShort(short value,
 OutputStream stream)
                               throws EncodeException

Write the given Short to the target OutputStream.

Parameters:

value - the value to write to the OutputStream.

stream - the OutputStream where the target value is to be written.

Returns:

the given OutputStream instance.

Throws:

EncodeException - if an error occurs while writing to the target OutputStream.

writeInt

public static OutputStream writeInt(int value,
 OutputStream stream)
                             throws EncodeException

Write the given Integer to the target OutputStream.

Parameters:

value - the value to write to the OutputStream.

stream - the OutputStream where the target value is to be written.

Returns:

the given OutputStream instance.

Throws:

EncodeException - if an error occurs while writing to the target OutputStream.

writeLong

public static OutputStream writeLong(long value,
 OutputStream stream)
                              throws EncodeException

Write the given Long to the target OutputStream.

Parameters:

value - the value to write to the OutputStream.

stream - the OutputStream where the target value is to be written.

Returns:

the given OutputStream instance.

Throws:

EncodeException - if an error occurs while writing to the target OutputStream.

readBytes

public static byte[] readBytes(InputStream stream,
 int length)
                        throws DecodeException

Reads the given number of bytes from the provided InputStream into an array and return that to the caller. If the requested number of bytes cannot be read from the stream an DecodeException is thrown to indicate an underflow.

Parameters:

stream - The InputStream where the bytes should be read from.

length - The number of bytes to read from the given input stream.

Returns:

a byte array containing the requested number of bytes read from the given InputStream

Throws:

DecodeException - if an error occurs reading from the stream or insufficient bytes are available.

readEncodingCode

public static byte readEncodingCode(InputStream stream)
                             throws DecodeException

Reads a single byte from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

readByte

public static byte readByte(InputStream stream)
                     throws DecodeException

Reads a single byte from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

readShort

public static short readShort(InputStream stream)

Reads a short value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

readInt

public static int readInt(InputStream stream)

Reads a integer value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

readLong

public static long readLong(InputStream stream)

Reads a long value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

readFloat

public static float readFloat(InputStream stream)

Reads a float value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

readDouble

public static double readDouble(InputStream stream)

Reads a double value from the given InputStream and thrown a DecodeException if the InputStream indicates an EOF condition was encountered.

Parameters:

stream - The InputStream where the bytes should be read from.

Returns:

the given byte that was read from the stream.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

skipBytes

public static InputStream skipBytes(InputStream stream,
 long amount)

Attempts to skip the given number of bytes from the provided InputStream instance and throws a DecodeException if an error occurs during the skip.

Parameters:

stream - The InputStream where the bytes should be read from.

amount - The number of bytes that should be skipped.

Returns:

the InputStream instance that was passed.

Throws:

DecodeException - if an error occurs during the read or EOF is reached.

reset

public static InputStream reset(InputStream stream)
                         throws DecodeException

Attempts to reset the provided InputStream to a previously marked point. If an error occurs this method throws an DecodeException to describe the error.

Parameters:

stream - The InputStream that is to be reset.

Returns:

the InputStream instance that was passed.

Throws:

DecodeException - if an error occurs during the reset.