/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
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*
*
* Copyright 2006-2009 Sun Microsystems, Inc.
*/
package org.opends.server.protocols.asn1;
import org.opends.server.types.ByteSequence;
import java.io.Closeable;
import java.io.IOException;
import java.io.Flushable;
/**
* An interface for encoding ASN.1 elements to a data source.
* <p>
* Methods for creating {@link ASN1Writer}s are provided in the
* {@link ASN1} class.
*/
public interface ASN1Writer extends Closeable, Flushable
{
/**
* Closes this ASN.1 writer, flushing it first. Closing a
* previously closed ASN.1 writer has no effect. Any unfinished
* sequences and/or sets will be ended.
*
* @throws IOException
* If an error occurs while closing the writer.
*/
public void close() throws IOException;
/**
* Flushes the writer. If the writer has saved any elements from the
* previous write methods in a buffer, write them immediately to their
* intended destination. Then, if that destination is another byte stream,
* flush it. Thus one flush() invocation will flush all the buffers in a
* chain of streams.
* <p/>
* If the intended destination of this stream is an abstraction provided
* by the underlying operating system, for example a file, then flushing
* the stream guarantees only that bytes previously written to the stream
* are passed to the operating system for writing; it does not guarantee
* that they are actually written to a physical device such as a disk drive.
*
* @throws IOException If an I/O error occurs
*/
public void flush() throws IOException;
/**
* Writes a boolean element using the Universal Boolean ASN.1 type
* tag.
*
* @param booleanValue
* The boolean value to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeBoolean(boolean booleanValue) throws IOException;
/**
* Writes a boolean element using the provided type tag.
*
* @param type
* The type tag to use.
* @param booleanValue
* The boolean value to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeBoolean(byte type, boolean booleanValue) throws IOException;
/**
* Finish writing a sequence.
*
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeEndSequence() throws IOException;
/**
* Finish writing a set.
*
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeEndSet() throws IOException;
/**
* Writes an integer element using the provided type tag.
*
* @param type
* The type tag to use.
* @param intValue
* The integer value to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeInteger(byte type, int intValue) throws IOException;
/**
* Writes an integer element using the provided type tag.
*
* @param type
* The type tag to use.
* @param longValue
* The integer value to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeInteger(byte type, long longValue) throws IOException;
/**
* Writes an integer element using the Universal Integer ASN.1 type
* tag.
*
* @param intValue
* The integer value to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeInteger(int intValue) throws IOException;
/**
* Writes an integer element using the Universal Integer ASN.1 type
* tag.
*
* @param longValue
* The integer value to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeInteger(long longValue) throws IOException;
/**
* Writes an enumerated element using the Universal Enumerated ASN.1 type
* tag.
*
* @param intValue
* The integer value of the enumeration to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeEnumerated(int intValue) throws IOException;
/**
* Writes a null element using the Universal Null ASN.1 type tag.
*
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeNull() throws IOException;
/**
* Writes a null element using the provided type tag.
*
* @param type
* The type tag to use.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeNull(byte type) throws IOException;
/**
* Writes an octet string element using the provided type tag and
* byte array.
*
* @param type
* The type tag to use.
* @param value
* The byte array containing the data to write.
* @param offset
* The offset in the byte array.
* @param length
* The number of bytes to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeOctetString(byte type, byte[] value, int offset, int length)
throws IOException;
/**
* Writes an octet string element using the provided type tag and
* byte sequence.
*
* @param type
* The type tag to use.
* @param value
* The byte sequence containing the data to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeOctetString(byte type, ByteSequence value) throws IOException;
/**
* Writes an octet string element using the provided type tag and
* the UTF-8 encoded bytes of the provided string.
*
* @param type
* The type tag to use.
* @param value
* The string to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeOctetString(byte type, String value) throws IOException;
/**
* Writes an octet string element using the Universal Octet String
* ASN.1 type tag and the provided byte array.
*
* @param value
* The byte array containing the data to write.
* @param offset
* The offset in the byte array.
* @param length
* The number of bytes to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeOctetString(byte[] value, int offset, int length)
throws IOException;
/**
* Writes an octet string element using the Universal Octet String
* ASN.1 type tag and the provided byte sequence.
*
* @param value
* The byte sequence containing the data to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeOctetString(ByteSequence value) throws IOException;
/**
* Writes an octet string element using the Universal Octet String
* ASN.1 type tag and the UTF-8 encoded bytes of the provided
* string.
*
* @param value
* The string to write.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeOctetString(String value) throws IOException;
/**
* Writes a sequence element using the Universal Sequence ASN.1 type
* tag. All further writes will be part of this set until
* {@link #writeEndSequence()} is called.
*
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeStartSequence() throws IOException;
/**
* Writes a sequence element using the provided type tag. All
* further writes will be part of this sequence until
* {@link #writeEndSequence()} is called.
*
* @param type
* The type tag to use.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeStartSequence(byte type) throws IOException;
/**
* Writes a set element using the Universal Set type tag. All
* further writes will be part of this set until
* {@link #writeEndSet()} is called.
*
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeStartSet() throws IOException;
/**
* Writes a set element using the provided type tag. All further
* writes will be part of this set until {@link #writeEndSet()} is
* called.
*
* @param type
* The type tag to use.
* @return a reference to this object.
* @throws IOException
* If an error occurs while writing.
*/
ASN1Writer writeStartSet(byte type) throws IOException;
}