/*------------------------------------------------------------------------------
 *
 * Copyright (c) 2011-2016, EURid. All rights reserved.
 * The YADIFA TM software product is provided under the BSD 3-clause license:
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *        * Redistributions of source code must retain the above copyright 
 *          notice, this list of conditions and the following disclaimer.
 *        * 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.
 *        * Neither the name of EURid nor the names of its contributors may be 
 *          used to endorse or promote products derived from this software 
 *          without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
 *
 *------------------------------------------------------------------------------
 *
 */
/** @defgroup streaming Streams
 *  @ingroup dnscore
 *  @brief
 *
 *
 *
 * @{
 *
 *----------------------------------------------------------------------------*/
#include "dnscore/dnscore-config.h"
#include <stdio.h>
#include <stdlib.h>

#include "dnscore/counter_output_stream.h"

static ya_result
counter_write(output_stream* stream, const u8* buffer, u32 len)
{
    counter_output_stream_data* data = (counter_output_stream_data*)stream->data;

    data->write_count += len;

    if(ISOK(data->result))
    {
        data->result = output_stream_write(data->filtered, buffer, len);

        if(ISOK(data->result))
        {
            data->written_count += data->result;
        }
    }

    return data->result;
}

static ya_result
counter_flush(output_stream* stream)
{
    counter_output_stream_data* data = (counter_output_stream_data*)stream->data;

    if(ISOK(data->result))
    {
        data->result = output_stream_flush(data->filtered);
    }

    return data->result;
}

static void
counter_close(output_stream* stream)
{
    // counter_output_stream_data* data = (counter_output_stream_data*)stream->data;
    
    output_stream_set_void(stream);
}

static const output_stream_vtbl counter_output_stream_vtbl ={
    counter_write,
    counter_flush,
    counter_close,
    "counter_output_stream",
};

void
counter_output_stream_init(output_stream* filtered, output_stream* stream, counter_output_stream_data* counter_data)
{
    yassert(filtered != stream);
    
    counter_output_stream_data* data = counter_data;

    data->filtered = filtered;
    data->write_count = 0;
    data->written_count = 0;
    data->result = SUCCESS;

    stream->data = data;
    stream->vtbl = &counter_output_stream_vtbl;
}

/** @} */

/*----------------------------------------------------------------------------*/

