/*      $NetBSD: prop_ingest.c,v 1.3 2008/04/28 20:22:53 martin Exp $   */

/*-
 * Copyright (c) 2006 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <libprop/proplib.h>
#include "prop_object_impl.h"

struct _prop_ingest_context {
        prop_ingest_error_t     pic_error;
        prop_type_t             pic_type;
        const char *            pic_key;
        void *                  pic_private;
};

/*
 * prop_ingest_context_alloc --
 *      Allocate and initialize an ingest context.
 */
prop_ingest_context_t
prop_ingest_context_alloc(void *private)
{
        prop_ingest_context_t ctx;

        ctx = _PROP_MALLOC(sizeof(*ctx), M_TEMP);
        if (ctx != NULL) {
                ctx->pic_error = PROP_INGEST_ERROR_NO_ERROR;
                ctx->pic_type = PROP_TYPE_UNKNOWN;
                ctx->pic_key = NULL;
                ctx->pic_private = private;
        }
        return (ctx);
}

/*
 * prop_ingest_context_free --
 *      Free an ingest context.
 */
void
prop_ingest_context_free(prop_ingest_context_t ctx)
{

        _PROP_FREE(ctx, M_TEMP);
}

/*
 * prop_ingest_context_error --
 *      Get the error code from an ingest context.
 */
prop_ingest_error_t
prop_ingest_context_error(prop_ingest_context_t ctx)
{

        return (ctx->pic_error);
}

/*
 * prop_ingest_context_type --
 *      Return the type of last object visisted by an ingest context.
 */
prop_type_t
prop_ingest_context_type(prop_ingest_context_t ctx)
{

        return (ctx->pic_type);
}

/*
 * prop_ingest_context_key --
 *      Return the last key looked up by an ingest context.
 */
const char *
prop_ingest_context_key(prop_ingest_context_t ctx)
{

        return (ctx->pic_key);
}

/*
 * prop_ingest_context_private --
 *      Return the caller-private data associated with an ingest context.
 */
void *
prop_ingest_context_private(prop_ingest_context_t ctx)
{

        return (ctx->pic_private);
}

/*
 * prop_dictionary_ingest --
 *      Ingest a dictionary using handlers for each object to translate
 *      into an arbitrary binary format.
 */
bool
prop_dictionary_ingest(prop_dictionary_t dict,
                       const prop_ingest_table_entry rules[],
                       prop_ingest_context_t ctx)
{
        const prop_ingest_table_entry *pite;
        prop_object_t obj;

        ctx->pic_error = PROP_INGEST_ERROR_NO_ERROR;

        for (pite = rules; pite->pite_key != NULL; pite++) {
                ctx->pic_key = pite->pite_key;
                obj = prop_dictionary_get(dict, pite->pite_key);
                ctx->pic_type = prop_object_type(obj);
                if (obj == NULL) {
                        if (pite->pite_flags & PROP_INGEST_FLAG_OPTIONAL) {
                                if ((*pite->pite_handler)(ctx, NULL) == false) {
                                        ctx->pic_error =
                                            PROP_INGEST_ERROR_HANDLER_FAILED;
                                        return (false);
                                }
                                continue;
                        }
                        ctx->pic_error = PROP_INGEST_ERROR_NO_KEY;
                        return (false);
                }
                if (ctx->pic_type != pite->pite_type &&
                    pite->pite_type != PROP_TYPE_UNKNOWN) {
                        ctx->pic_error = PROP_INGEST_ERROR_WRONG_TYPE;
                        return (false);
                }
                if ((*pite->pite_handler)(ctx, obj) == false) {
                        ctx->pic_error = PROP_INGEST_ERROR_HANDLER_FAILED;
                        return (false);
                }
        }

        return (true);
}