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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (c) 2009, Patrick "CaptTofu" Galbraith, Padraig O'Sullivan
* 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.
* * Neither the name of Patrick Galbraith 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.
*/
#include "config.h"
#include <drizzled/function/str/strfunc.h>
#include "memcached_functions.h"
#include "memc_decrement.h"
#include <libmemcached/memcached.h>
#include <string>
using namespace std;
using namespace drizzled;
String *MemcachedDecrement::val_str(String *str)
{
memcached_return rc;
uint32_t offset;
uint64_t value;
size_t val_len;
char tmp_buff[32]= "";
String *key;
String *dec_str;
null_value= false;
if ((arg_count != 1 && arg_count != 2) ||
! (key= args[0]->val_str(str)) ||
! memc)
{
return &failure_buff;
}
if (arg_count == 2) {
dec_str= args[1]->val_str(str);
offset= static_cast<uint32_t>(atoi(dec_str->c_ptr()));
}
else
{
offset= 1;
}
rc= memcached_decrement(memc,
key->c_ptr(),
key->length(),
offset,
&value);
snprintf(tmp_buff, 32, "%"PRIu64, value);
val_len= strlen(tmp_buff);
if (rc != MEMCACHED_SUCCESS)
{
return &failure_buff;
}
buffer.realloc(val_len);
buffer.length(val_len);
memcpy(buffer.ptr(), tmp_buff, val_len);
return &buffer;
}
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