minix/common/lib/libprop/prop_ingest.c
2011-12-22 18:03:13 +01:00

159 lines
4.2 KiB
C

/* $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 <prop/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);
}