git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/namespace.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  All rights reserved.
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions are
  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
  14  *
  15  *      * Redistributions in binary form must reproduce the above
  16  *  copyright notice, this list of conditions and the following disclaimer
  17  *  in the documentation and/or other materials provided with the
  18  *  distribution.
  19  *
  20  *      * The names of its contributors may not be used to endorse or
  21  *  promote products derived from this software without specific prior
  22  *  written permission.
  23  *
  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38 #include <libmemcached/common.h>
  39 #include <libmemcached/assert.hpp>
  40
  41 memcached_return_t memcached_set_namespace(memcached_st *self, const char *key, size_t key_length)
  42 {
  43   assert_msg(self, "A NULL memcached_st was used");
  44
  45   if (key and key_length == 0)
  46   {
  47     WATCHPOINT_ASSERT(key_length);
  48     return memcached_set_error(*self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid namespace, namespace string had value but length was 0"));
  49   }
  50   else if (key_length and key == NULL)
  51   {
  52     WATCHPOINT_ASSERT(key);
  53     return memcached_set_error(*self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid namespace, namespace string length was > 1 but namespace string was null "));
  54   }
  55   else if (key and key_length)
  56   {
  57     bool orig= self->flags.verify_key;
  58     self->flags.verify_key= true;
  59     if (memcached_failed(memcached_key_test(*self, (const char **)&key, &key_length, 1)))
  60     {
  61       self->flags.verify_key= orig;
  62       return memcached_last_error(self);
  63     }
  64     self->flags.verify_key= orig;
  65
  66     if ((key_length > MEMCACHED_PREFIX_KEY_MAX_SIZE -1))
  67     {
  68       return memcached_set_error(*self, MEMCACHED_KEY_TOO_BIG, MEMCACHED_AT);
  69     }
  70
  71     memcached_array_free(self->_namespace);
  72     self->_namespace= memcached_strcpy(self, key, key_length);
  73
  74     if (not self->_namespace)
  75     {
  76       return memcached_set_error(*self, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  77     }
  78   }
  79   else
  80   {
  81     memcached_array_free(self->_namespace);
  82     self->_namespace= NULL;
  83   }
  84
  85   return MEMCACHED_SUCCESS;
  86 }
  87
  88 const char * memcached_get_namespace(memcached_st *self)
  89 {
  90   if (self->_namespace == NULL)
  91   {
  92     return NULL;
  93   }
  94
  95   return memcached_array_string(self->_namespace);
  96 }