/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 * 
 *  Libmemcached library
 *
 *  Copyright (C) 2011-2013 Data Differential, http://datadifferential.com/
 *  Copyright (C) 2006-2009 Brian Aker All rights reserved.
 *
 *  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.
 *
 *      * The names of its contributors may not 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
 *  OWNER 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.
 *
 */


/*
  memcached_result_st are used to internally represent the return values from
  memcached. We use a structure so that long term as identifiers are added
  to memcached we will be able to absorb new attributes without having
  to addjust the entire API.
*/
#include <libmemcached/common.h>
#include <memory>

memcached_result_st *memcached_result_create(const memcached_st *shell,
                                             memcached_result_st *result_shell)
{
  const Memcached* memc= memcached2Memcached(shell);
  Result *result= new (std::nothrow) Result(result_shell, memc);
  if (result)
  {
    return result->shell();
  }

  return NULL;
}

void memcached_result_reset(memcached_result_st *result)
{
  result->impl()->key_length= 0;
  memcached_string_reset(&result->impl()->value);
  result->impl()->item_flags= 0;
  result->impl()->item_cas= 0;
  result->impl()->item_expiration= 0;
  result->impl()->numeric_value= UINT64_MAX;
}

void memcached_result_free(memcached_result_st* result)
{
  if (result)
  {
    memcached_string_free(&result->impl()->value);

    bool cleanup= memcached_is_allocated(result);
    delete result->impl();

    if (cleanup == false)
    {
      memcached_set_initialized(result, false);
      result->impl(NULL);
    }
  }
}

void memcached_result_reset_value(memcached_result_st *ptr)
{
  memcached_string_reset(&ptr->impl()->value);
}

memcached_return_t memcached_result_set_value(memcached_result_st *ptr,
                                              const char *value,
                                              size_t length)
{
  if (memcached_failed(memcached_string_append(&ptr->impl()->value, value, length)))
  {
    return memcached_set_errno(*(ptr->impl())->root, errno, MEMCACHED_AT);
  }

  return MEMCACHED_SUCCESS;
}

const char *memcached_result_key_value(const memcached_result_st *self)
{
  return self->impl()->key_length ? self->impl()->item_key : NULL;
}

size_t memcached_result_key_length(const memcached_result_st *self)
{
  return self->impl()->key_length;
}

const char *memcached_result_value(const memcached_result_st *self)
{
  const memcached_string_st *sptr= &self->impl()->value;
  return memcached_string_value(sptr);
}

size_t memcached_result_length(const memcached_result_st *self)
{
  const memcached_string_st *sptr= &self->impl()->value;
  return memcached_string_length(sptr);
}

char *memcached_result_take_value(memcached_result_st *self)
{
  memcached_string_st *sptr= &self->impl()->value;
  return memcached_string_take_value(sptr);
}

uint32_t memcached_result_flags(const memcached_result_st *self)
{
  return self->impl()->item_flags;
}

uint64_t memcached_result_cas(const memcached_result_st *self)
{
  return self->impl()->item_cas;
}

void memcached_result_set_flags(memcached_result_st *self, uint32_t flags)
{
  self->impl()->item_flags= flags;
}

void memcached_result_set_expiration(memcached_result_st *self, time_t expiration)
{
  self->impl()->item_expiration= expiration;
}