git.m6w6.name Git - awesomized/libmemcached/blob - lib/memcached_storage.c

   1 /*
   2   Memcached library
   3
   4   memcached_set()
   5   memcached_replace()
   6   memcached_add()
   7
   8 */
   9
  10 #include <memcached.h>
  11
  12 static memcached_return memcached_send(memcached_st *ptr,
  13                                        char *key, size_t key_length,
  14                                        char *value, size_t value_length,
  15                                        time_t expiration,
  16                                        uint16_t  flags,
  17                                        char *verb)
  18 {
  19   size_t send_length;
  20   memcached_return rc;
  21   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
  22
  23   rc= memcached_connect(ptr);
  24
  25   send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  26                         "%s %.*s %u %u %u\r\n", verb,
  27                         key_length, key, flags, expiration, value_length);
  28   if ((send(ptr->fd, buffer, send_length, 0) == -1))
  29   {
  30     fprintf(stderr, "failed set on %.*s TCP\n", key_length+1, key);
  31
  32     return MEMCACHED_WRITE_FAILURE;
  33   }
  34
  35   send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  36                         "%.*s\r\n",
  37                         value_length, value);
  38   if ((send(ptr->fd, buffer, send_length, 0) == -1))
  39   {
  40     fprintf(stderr, "failed set on %.*s TCP\n", key_length+1, key);
  41
  42     return MEMCACHED_WRITE_FAILURE;
  43   }
  44
  45   send_length= read(ptr->fd, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE);
  46
  47   if (send_length && buffer[0] == 'S')  /* STORED */
  48     return MEMCACHED_SUCCESS;
  49   else if (send_length && buffer[0] == 'N')  /* NOT_STORED */
  50     return MEMCACHED_NOTSTORED;
  51   else
  52     return MEMCACHED_READ_FAILURE;
  53 }
  54
  55 memcached_return memcached_set(memcached_st *ptr, char *key, size_t key_length,
  56                                char *value, size_t value_length,
  57                                time_t expiration,
  58                                uint16_t  flags)
  59 {
  60   return  memcached_send(ptr, key, key_length, value, value_length,
  61                          expiration, flags, "set");
  62 }
  63
  64 memcached_return memcached_add(memcached_st *ptr, char *key, size_t key_length,
  65                                char *value, size_t value_length,
  66                                time_t expiration,
  67                                uint16_t  flags)
  68 {
  69   return  memcached_send(ptr, key, key_length, value, value_length,
  70                          expiration, flags, "add");
  71 }
  72
  73 memcached_return memcached_replace(memcached_st *ptr, char *key, size_t key_length,
  74                                    char *value, size_t value_length,
  75                                    time_t expiration,
  76                                    uint16_t  flags)
  77 {
  78   return  memcached_send(ptr, key, key_length, value, value_length,
  79                          expiration, flags, "replace");
  80 }