git.m6w6.name Git - m6w6/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
  40 memcached_return_t memcached_set_namespace(memcached_st *self, const char *key, size_t key_length)
  41 {
  42   WATCHPOINT_ASSERT(self);
  43
  44   if (key and key_length == 0)
  45   {
  46     WATCHPOINT_ASSERT(key_length);
  47     return memcached_set_error(*self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid namespace, namespace string had value but length was 0"));
  48   }
  49   else if (key_length and key == NULL)
  50   {
  51     WATCHPOINT_ASSERT(key);
  52     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 "));
  53   }
  54   else if (key and key_length)
  55   {
  56     bool orig= self->flags.verify_key;
  57     self->flags.verify_key= true;
  58     if (memcached_failed(memcached_key_test(*self, (const char **)&key, &key_length, 1)))
  59     {
  60       self->flags.verify_key= orig;
  61       return memcached_last_error(self);
  62     }
  63     self->flags.verify_key= orig;
  64
  65     if ((key_length > MEMCACHED_PREFIX_KEY_MAX_SIZE -1))
  66     {
  67       return memcached_set_error(*self, MEMCACHED_KEY_TOO_BIG, MEMCACHED_AT);
  68     }
  69
  70     memcached_array_free(self->_namespace);
  71     self->_namespace= memcached_strcpy(self, key, key_length);
  72
  73     if (not self->_namespace)
  74     {
  75       return memcached_set_error(*self, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  76     }
  77   }
  78   else
  79   {
  80     memcached_array_free(self->_namespace);
  81     self->_namespace= NULL;
  82   }
  83
  84   return MEMCACHED_SUCCESS;
  85 }
  86
  87 const char * memcached_get_namespace(memcached_st *self)
  88 {
  89   if (not self->_namespace)
  90     return NULL;
  91
  92   return memcached_array_string(self->_namespace);
  93 }