git.m6w6.name Git - m6w6/libmemcached/blob - lib/memcached_response.c

   1 /*
   2   Memcached library
   3
   4   memcached_response() is used to determine the return result
   5   from an issued command.
   6 */
   7
   8 #include <memcached.h>
   9
  10 memcached_return memcached_response(memcached_st *ptr,
  11                                     char *buffer, size_t buffer_length)
  12 {
  13   size_t send_length;
  14
  15   memset(buffer, 0, buffer_length);
  16   send_length= read(ptr->fd, buffer, buffer_length);
  17
  18   if (send_length)
  19     switch(buffer[0])
  20     {
  21     case 'V': /* VALUE */
  22       return MEMCACHED_SUCCESS;
  23     case 'O': /* OK */
  24       return MEMCACHED_SUCCESS;
  25     case 'S': /* STORED STATS SERVER_ERROR */
  26       {
  27         if (buffer[1] == 'T') /* STORED STATS */
  28           return MEMCACHED_SUCCESS;
  29         else if (buffer[1] == 'E')
  30           return MEMCACHED_SERVER_ERROR;
  31         else
  32           return MEMCACHED_UNKNOWN_READ_FAILURE;
  33       }
  34     case 'D': /* DELETED */
  35       return MEMCACHED_SUCCESS;
  36     case 'N': /* NOT_FOUND */
  37       {
  38         if (buffer[4] == 'F')
  39           return MEMCACHED_NOTFOUND;
  40         else if (buffer[4] == 'S')
  41           return MEMCACHED_NOTSTORED;
  42         else
  43           return MEMCACHED_UNKNOWN_READ_FAILURE;
  44       }
  45     case 'E': /* PROTOCOL ERROR */
  46       return MEMCACHED_PROTOCOL_ERROR;
  47     case 'C': /* CLIENT ERROR */
  48       return MEMCACHED_CLIENT_ERROR;
  49     default:
  50       return MEMCACHED_UNKNOWN_READ_FAILURE;
  51     }
  52
  53   return MEMCACHED_READ_FAILURE;
  54 }