com.sun.squawk.debugger
Class PacketInputStream

java.lang.Object
  com.sun.squawk.debugger.PacketInputStream

public class PacketInputStream
extends Object

A PacketInputStream is used to read data from the data part of a Packet.

Constructor Summary

	PacketInputStream(DataInputStream dis)
protected	PacketInputStream(PacketInputStream inner)

Method Summary

void	close() Closes this stream and its underlying stream.
DataInputStream	getInputStream() Get the underlying inputstream for sniffing purposes
boolean	readBoolean(String s) Reads a boolean value from this stream.
byte	readByte(String s) Reads one byte from this stream.
char	readChar(String s) Reads a char value from this stream.
double	readDouble(String s) Reads a double value from this stream.
DataType.FieldID	readFieldID(String s)
float	readFloat(String s) Reads a float value from this stream.
DataType.FrameID	readFrameID(String s)
int	readInt(String s) Reads an int value from this stream.
DataType.Location	readLocation(String s)
long	readLong(String s) Reads a long value from this stream.
DataType.MethodID	readMethodID(String s)
DataType.ObjectID	readObjectID(String s)
DataType.ReferenceTypeID	readReferenceTypeID(String s)
short	readShort(String s) Reads a short value from this stream.
String	readString(String s) Reads from the stream a representation of a Unicode character string encoded in Java modified UTF-8 format; this string of characters is then returned as a String.
DataType.TaggedObjectID	readTaggedObjectID(String s)
int	skipBytes(int n) Attempts to skip over n bytes in the stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

PacketInputStream

public PacketInputStream(DataInputStream dis)

PacketInputStream

protected PacketInputStream(PacketInputStream inner)

Method Detail

getInputStream

public final DataInputStream getInputStream()

Get the underlying inputstream for sniffing purposes

readByte

public final byte readByte(String s)
                    throws IOException

Reads one byte from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the next byte of data, or -1 if the end of the stream is reached.

Throws:

IOException - if there was an IO error while reading

readBoolean

public final boolean readBoolean(String s)
                          throws IOException

Reads a boolean value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the boolean value read.

Throws:

IOException - if there was an IO error while reading

readChar

public final char readChar(String s)
                    throws IOException

Reads a char value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the next two bytes of this input stream as a Unicode character.

Throws:

IOException - if there was an IO error while reading

readShort

public final short readShort(String s)
                      throws IOException

Reads a short value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the next two bytes of this input stream, interpreted as a signed 16-bit number.

Throws:

IOException - if there was an IO error while reading

readInt

public final int readInt(String s)
                  throws IOException

Reads an int value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the next four bytes of this input stream, interpreted as an int.

Throws:

IOException - if there was an IO error while reading

readLong

public final long readLong(String s)
                    throws IOException

Reads a long value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the next eight bytes of this input stream, interpreted as a long.

Throws:

IOException - if there was an IO error while reading

readFloat

public final float readFloat(String s)
                      throws IOException

Reads a float value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the read 32 bit float.

Throws:

IOException - if there was an IO error while reading

readDouble

public final double readDouble(String s)
                        throws IOException

Reads a double value from this stream.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

the 64 bit double read.

Throws:

IOException - if there was an IO error while reading

readString

public final String readString(String s)
                        throws IOException

Reads from the stream a representation of a Unicode character string encoded in Java modified UTF-8 format; this string of characters is then returned as a String. The format of the string in the stream is the same as that for DataInput, but the characters are preceeded by a 4-byte length field.

Parameters:

s - prefix to use if this read is logged. A value of null prevents logging altogether.

Returns:

a Unicode string.

Throws:

IOException - if there was an IO error while reading

readObjectID

public DataType.ObjectID readObjectID(String s)
                               throws IOException

Throws:

IOException

readTaggedObjectID

public DataType.TaggedObjectID readTaggedObjectID(String s)
                                           throws IOException

Throws:

IOException

readReferenceTypeID

public DataType.ReferenceTypeID readReferenceTypeID(String s)
                                             throws IOException

Throws:

IOException

readMethodID

public DataType.MethodID readMethodID(String s)
                               throws IOException

Throws:

IOException

readFrameID

public DataType.FrameID readFrameID(String s)
                             throws IOException

Throws:

IOException

readFieldID

public DataType.FieldID readFieldID(String s)
                             throws IOException

Throws:

IOException

readLocation

public DataType.Location readLocation(String s)
                               throws IOException

Throws:

IOException

skipBytes

public int skipBytes(int n)
              throws IOException

Attempts to skip over n bytes in the stream.

Parameters:

n - number of bytes to skip

Returns:

number of bytes actually skipped

Throws:

IOException - if there was an IO error while skipping

close

public void close()
           throws IOException

Closes this stream and its underlying stream.

Throws:

IOException