/*
 * Copyright (c) 2005-2008 Nominet UK (www.nic.uk)
 * All rights reserved.
 * Contributors: Ben Laurie, Rachel Willmer. The Contributors have asserted
 * their moral rights under the UK Copyright Design and Patents Act 1988 to
 * be recorded as the authors of this copyright work.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. 
 * 
 * You may obtain a copy of the License at 
 *     http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * 
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/** \file
 */

#include <openpgpsdk/crypto.h>
#include <assert.h>
#include <string.h>

#include <openpgpsdk/final.h>

static int hash_reader(void *dest,size_t length,ops_error_t **errors,
		       ops_reader_info_t *rinfo,ops_parse_cb_info_t *cbinfo)
    {
    ops_hash_t *hash=ops_reader_get_arg(rinfo);
    int r=ops_stacked_read(dest,length,errors,rinfo,cbinfo);

    if(r <= 0)
	return r;
	
    hash->add(hash,dest,r);

    return r;
    }

/**
   \ingroup Internal_Readers_Hash
   \brief Push hashed data reader on stack
*/
void ops_reader_push_hash(ops_parse_info_t *pinfo,ops_hash_t *hash)
    {
    hash->init(hash);
    ops_reader_push(pinfo,hash_reader,NULL,hash);
    }

/**
   \ingroup Internal_Readers_Hash
   \brief Pop hashed data reader from stack
*/
void ops_reader_pop_hash(ops_parse_info_t *pinfo)
    { ops_reader_pop(pinfo); }

// EOF