git.m6w6.name Git - awesomized/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 "common.h"
   9
  10 memcached_return memcached_response(memcached_st *ptr,
  11                                     char *buffer, size_t buffer_length,
  12                                     unsigned int server_key)
  13 {
  14   size_t send_length;
  15   char *buffer_ptr;
  16
  17   memset(buffer, 0, buffer_length);
  18   send_length= 0;
  19
  20   buffer_ptr= buffer;
  21   while (1)
  22   {
  23     unsigned int read_length;
  24
  25     read_length= memcached_io_read(ptr, server_key,
  26                                    buffer_ptr, 1);
  27
  28     if (read_length != 1)
  29       return  MEMCACHED_UNKNOWN_READ_FAILURE;
  30
  31     if (*buffer_ptr == '\n')
  32       break;
  33     else
  34       buffer_ptr++;
  35   }
  36
  37   switch(buffer[0])
  38   {
  39   case 'V': /* VALUE */
  40     return MEMCACHED_SUCCESS;
  41   case 'O': /* OK */
  42     return MEMCACHED_SUCCESS;
  43   case 'S': /* STORED STATS SERVER_ERROR */
  44     {
  45       if (buffer[1] == 'T') /* STORED STATS */
  46         return MEMCACHED_SUCCESS;
  47       else if (buffer[1] == 'E')
  48         return MEMCACHED_SERVER_ERROR;
  49       else
  50         return MEMCACHED_UNKNOWN_READ_FAILURE;
  51     }
  52   case 'D': /* DELETED */
  53     return MEMCACHED_DELETED;
  54   case 'N': /* NOT_FOUND */
  55     {
  56       if (buffer[4] == 'F')
  57         return MEMCACHED_NOTFOUND;
  58       else if (buffer[4] == 'S')
  59         return MEMCACHED_NOTSTORED;
  60       else
  61         return MEMCACHED_UNKNOWN_READ_FAILURE;
  62     }
  63   case 'E': /* PROTOCOL ERROR or END */
  64     {
  65       if (buffer[1] == 'N')
  66         return MEMCACHED_END;
  67       else if (buffer[1] == 'R')
  68         return MEMCACHED_PROTOCOL_ERROR;
  69       else
  70         return MEMCACHED_UNKNOWN_READ_FAILURE;
  71     }
  72   case 'C': /* CLIENT ERROR */
  73     return MEMCACHED_CLIENT_ERROR;
  74   default:
  75     return MEMCACHED_UNKNOWN_READ_FAILURE;
  76
  77   }
  78
  79   return MEMCACHED_SUCCESS;
  80 }