com.objsys.asn1j.runtime

Class Asn1OutputStream

java.lang.Object

java.io.OutputStream

com.objsys.asn1j.runtime.Asn1OutputStream

All Implemented Interfaces:

Asn1Writable, java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

Direct Known Subclasses:

Asn1BerOutputStream, Asn1MderOutputStream, Asn1PerOutputStream, Asn1XerOutputStream, Asn1XmlOutputStream

public abstract class Asn1OutputStream
extends java.io.OutputStream
implements Asn1Writable

This abstract class implements the base output stream to encode ASN.1 messages.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.io.OutputStream	os Underlying OutputStream that we write to.

Constructor Summary

Constructors

Constructor and Description
Asn1OutputStream(java.io.OutputStream os) This constructor creates an output stream object.

Method Summary

Modifier and Type	Method and Description
void	close() Closes this output stream and releases any system resources associated with this stream.
void	flush() Flushes this output stream and forces any buffered output bytes to be written out.
Asn1Context	getContext() Return the context object associated with this stream.
void	write(byte[] b) Writes b.length bytes from the specified byte array to this output stream.
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to this output stream.
void	write(int b) Writes the specified byte to this output stream.
void	write2Bytes(int value) Write the lowest two bytes of value to the output stream.
void	write4Bytes(int value) Write the four bytes of value to the output stream.

Methods inherited from class java.lang.Object

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

Field Detail

os

protected java.io.OutputStream os

Underlying OutputStream that we write to. We implement abstract method write using this stream.

Constructor Detail

Asn1OutputStream

public Asn1OutputStream(java.io.OutputStream os)

This constructor creates an output stream object.

Parameters:

os - The underlying OutputStream object.

Method Detail

getContext

public Asn1Context getContext()

Return the context object associated with this stream.

Returns:

The context.

write2Bytes

public void write2Bytes(int value)
                 throws java.io.IOException

Write the lowest two bytes of value to the output stream. The lowest byte is written last.

Parameters:

value - The value to write.

Throws:

java.io.IOException - for any I/O error

write4Bytes

public void write4Bytes(int value)
                 throws java.io.IOException

Write the four bytes of value to the output stream. The lowest byte is written last.

Parameters:

value - The value to write.

Throws:

java.io.IOException - for any I/O error

write

public void write(byte[] b)
           throws java.io.IOException

Writes b.length bytes from the specified byte array to this output stream. The general contract for write(b) is that it should have exactly the same effect as the call write(b, 0, b.length).

Specified by:

write in interface Asn1Writable

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Writes len bytes from the specified byte array starting at offset off to this output stream.

Specified by:

write in interface Asn1Writable

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException is thrown if the output stream is closed.

write

public void write(int b)
           throws java.io.IOException

Writes the specified byte to this output stream. The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Specified by:

write in interface Asn1Writable

Specified by:

write in class java.io.OutputStream

Parameters:

b - the byte.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

close

public void close()
           throws java.io.IOException

Closes this output stream and releases any system resources associated with this stream. The general contract of close is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException - if an I/O error occurs.

flush

public void flush()
           throws java.io.IOException

Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException - if an I/O error occurs.