/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2009 Sun Microsystems, Inc.
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*/
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package org.opends.server.protocols.asn1;
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import org.opends.server.types.ByteSequence;
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.Flushable;
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/**
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* An interface for encoding ASN.1 elements to a data source.
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* <p>
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* Methods for creating {@link ASN1Writer}s are provided in the
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* {@link ASN1} class.
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*/
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public interface ASN1Writer extends Closeable, Flushable
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{
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/**
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* Closes this ASN.1 writer, flushing it first. Closing a
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* previously closed ASN.1 writer has no effect. Any unfinished
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* sequences and/or sets will be ended.
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*
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* @throws IOException
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* If an error occurs while closing the writer.
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*/
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public void close() throws IOException;
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/**
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* Flushes the writer. If the writer has saved any elements from the
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* previous write methods in a buffer, write them immediately to their
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* intended destination. Then, if that destination is another byte stream,
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* flush it. Thus one flush() invocation will flush all the buffers in a
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* chain of streams.
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* <p/>
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* If the intended destination of this stream is an abstraction provided
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* by the underlying operating system, for example a file, then flushing
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* the stream guarantees only that bytes previously written to the stream
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* are passed to the operating system for writing; it does not guarantee
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* that they are actually written to a physical device such as a disk drive.
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*
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* @throws IOException If an I/O error occurs
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*/
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public void flush() throws IOException;
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/**
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* Writes a boolean element using the Universal Boolean ASN.1 type
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* tag.
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*
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* @param booleanValue
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* The boolean value to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeBoolean(boolean booleanValue) throws IOException;
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/**
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* Writes a boolean element using the provided type tag.
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*
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* @param type
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* The type tag to use.
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* @param booleanValue
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* The boolean value to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeBoolean(byte type, boolean booleanValue) throws IOException;
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/**
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* Finish writing a sequence.
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*
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeEndSequence() throws IOException;
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/**
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* Finish writing a set.
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*
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeEndSet() throws IOException;
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/**
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* Writes an integer element using the provided type tag.
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*
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* @param type
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* The type tag to use.
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* @param intValue
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* The integer value to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeInteger(byte type, int intValue) throws IOException;
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/**
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* Writes an integer element using the provided type tag.
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*
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* @param type
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* The type tag to use.
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* @param longValue
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* The integer value to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeInteger(byte type, long longValue) throws IOException;
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/**
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* Writes an integer element using the Universal Integer ASN.1 type
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* tag.
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*
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* @param intValue
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* The integer value to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeInteger(int intValue) throws IOException;
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/**
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* Writes an integer element using the Universal Integer ASN.1 type
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* tag.
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*
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* @param longValue
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* The integer value to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeInteger(long longValue) throws IOException;
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/**
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* Writes an enumerated element using the Universal Enumerated ASN.1 type
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* tag.
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*
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* @param intValue
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* The integer value of the enumeration to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeEnumerated(int intValue) throws IOException;
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/**
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* Writes a null element using the Universal Null ASN.1 type tag.
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*
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeNull() throws IOException;
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/**
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* Writes a null element using the provided type tag.
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*
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* @param type
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* The type tag to use.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeNull(byte type) throws IOException;
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/**
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* Writes an octet string element using the provided type tag and
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* byte array.
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*
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* @param type
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* The type tag to use.
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* @param value
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* The byte array containing the data to write.
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* @param offset
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* The offset in the byte array.
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* @param length
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* The number of bytes to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeOctetString(byte type, byte[] value, int offset, int length)
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throws IOException;
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/**
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* Writes an octet string element using the provided type tag and
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* byte sequence.
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*
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* @param type
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* The type tag to use.
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* @param value
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* The byte sequence containing the data to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeOctetString(byte type, ByteSequence value) throws IOException;
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/**
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* Writes an octet string element using the provided type tag and
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* the UTF-8 encoded bytes of the provided string.
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*
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* @param type
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* The type tag to use.
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* @param value
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* The string to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeOctetString(byte type, String value) throws IOException;
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/**
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* Writes an octet string element using the Universal Octet String
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* ASN.1 type tag and the provided byte array.
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*
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* @param value
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* The byte array containing the data to write.
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* @param offset
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* The offset in the byte array.
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* @param length
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* The number of bytes to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeOctetString(byte[] value, int offset, int length)
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throws IOException;
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/**
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* Writes an octet string element using the Universal Octet String
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* ASN.1 type tag and the provided byte sequence.
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*
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* @param value
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* The byte sequence containing the data to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeOctetString(ByteSequence value) throws IOException;
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/**
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* Writes an octet string element using the Universal Octet String
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* ASN.1 type tag and the UTF-8 encoded bytes of the provided
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* string.
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*
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* @param value
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* The string to write.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeOctetString(String value) throws IOException;
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/**
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* Writes a sequence element using the Universal Sequence ASN.1 type
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* tag. All further writes will be part of this set until
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* {@link #writeEndSequence()} is called.
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*
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeStartSequence() throws IOException;
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/**
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* Writes a sequence element using the provided type tag. All
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* further writes will be part of this sequence until
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* {@link #writeEndSequence()} is called.
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*
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* @param type
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* The type tag to use.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeStartSequence(byte type) throws IOException;
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/**
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* Writes a set element using the Universal Set type tag. All
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* further writes will be part of this set until
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* {@link #writeEndSet()} is called.
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*
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeStartSet() throws IOException;
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/**
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* Writes a set element using the provided type tag. All further
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* writes will be part of this set until {@link #writeEndSet()} is
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* called.
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*
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* @param type
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* The type tag to use.
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* @return a reference to this object.
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* @throws IOException
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* If an error occurs while writing.
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*/
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ASN1Writer writeStartSet(byte type) throws IOException;
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}
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