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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * 
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

/**
 * Representation of a BER value as an interface containing an array of
 * bytes.  Someday this should perhaps be obsoleted by a better, more
 * generalized version of nsIByteBuffer, but that's currently not even
 * scriptable (see bug 125596).  
 */
[scriptable, uuid(c817c5fe-1dd1-11b2-a10b-ae9885762ea9)]
interface nsILDAPBERValue : nsISupports 
{
    /**
     * Set the BER value from an array of bytes (copies).
     *
     * @exception NS_ERROR_OUT_OF_MEMORY    couldn't allocate buffer to copy to
     */
    void set(in unsigned long aCount, 
             [array, size_is(aCount)] in octet aValue);

    /** 
     * Set the BER value from a UTF8 string (copies).
     *
     * @exception NS_ERROR_OUT_OF_MEMORY    couldn't allocate buffer to copy to
     */
    void setFromUTF8(in AUTF8String aValue);

    /** 
     * Get the BER value as an array of bytes.  Note that if this value is
     * zero-length, aCount and aRetVal will both be 0.  This means that 
     * (in C++ anyway) the caller MUST test either aCount or aRetval before
     * dereferencing aRetVal.
     *
     * @exception NS_ERROR_OUT_OF_MEMORY    couldn't allocate buffer to copy to
     */
    void get(out unsigned long aCount, 
             [retval, array, size_is(aCount)] out octet aRetVal);
};