/*
 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */


#include "ArchivingUtils.h"

#include <Message.h>


/*static*/ status_t
ArchivingUtils::ArchiveChild(BArchivable* object, BMessage& parentArchive,
        const char* fieldName)
{
        if (object == NULL)
                return B_BAD_VALUE;

        BMessage archive;
        status_t error = object->Archive(&archive, true);
        if (error != B_OK)
                return error;

        return parentArchive.AddMessage(fieldName, &archive);
}


/*static*/ BArchivable*
ArchivingUtils::UnarchiveChild(const BMessage& parentArchive,
        const char* fieldName, int32 index)
{
        BMessage archive;
        if (parentArchive.FindMessage(fieldName, index, &archive) != B_OK)
                return NULL;

        return instantiate_object(&archive);
}