git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/csl/context.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Configure Scripting Language
   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/csl/common.h>
  39 #include <libmemcached/csl/context.h>
  40
  41 void Context::abort(const char *error_arg, yytokentype last_token, const char *last_token_str)
  42 {
  43   rc= MEMCACHED_PARSE_ERROR;
  44   (void)last_token;
  45
  46   if (error_arg)
  47   {
  48     memcached_set_parser_error(*memc, MEMCACHED_AT, "%s", error_arg);
  49     return;
  50   }
  51
  52   if (last_token_str)
  53   {
  54     memcached_set_parser_error(*memc, MEMCACHED_AT, "%s", last_token_str);
  55     return;
  56   }
  57
  58   memcached_set_parser_error(*memc, MEMCACHED_AT, "unknown parsing error");
  59 }
  60
  61 void Context::error(const char *error_arg, yytokentype last_token, const char *last_token_str)
  62 {
  63   rc= MEMCACHED_PARSE_ERROR;
  64   if (not error_arg)
  65   {
  66     memcached_set_parser_error(*memc, MEMCACHED_AT, "Unknown error occured during parsing (%s)", last_token_str ? last_token_str : " ");
  67     return;
  68   }
  69
  70   if (error_arg and strcmp(error_arg, "memory exhausted") == 0)
  71   {
  72     (void)memcached_set_error(*memc, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, memcached_string_make_from_cstr(error_arg));
  73     return;
  74   }
  75
  76   // We now test if it is something other then a syntax error, if it  we
  77   // return a generic message
  78   if (error_arg and strcmp(error_arg, "syntax error") == 0)
  79   { }
  80   else if (error_arg)
  81   {
  82     memcached_set_parser_error(*memc, MEMCACHED_AT, "Error occured during parsing (%s)", error_arg);
  83     return;
  84   }
  85
  86   if (last_token == UNKNOWN_OPTION and begin)
  87   {
  88     memcached_set_parser_error(*memc, MEMCACHED_AT, "Unknown option: %s", begin);
  89   }
  90   else if (last_token == UNKNOWN)
  91   {
  92     memcached_set_parser_error(*memc, MEMCACHED_AT, "Error occured durring parsing, an unknown token was found.");
  93   }
  94   else
  95   {
  96     memcached_set_parser_error(*memc, MEMCACHED_AT, "Error occured while parsing (%s)", last_token_str ? last_token_str : " ");
  97   }
  98 }
  99
 100 void Context::hostname(const char *str, size_t size, server_t& server_)
 101 {
 102   size_t copy_length= size_t(NI_MAXHOST) > size ? size : size_t(NI_MAXHOST);
 103   memcpy(_hostname, str, copy_length);
 104   _hostname[copy_length]= 0;
 105
 106   server_.port= MEMCACHED_DEFAULT_PORT;
 107   server_.weight= 1;
 108   server_.c_str= _hostname;
 109   server_.size= size;
 110 }
 111
 112 bool Context::string_buffer(const char *str, size_t size, memcached_string_t& string_)
 113 {
 114   if (memcached_string_set(_string_buffer, str, size))
 115   {
 116     string_.c_str= memcached_string_value(_string_buffer);
 117     string_.size= memcached_string_length(_string_buffer);
 118
 119     return true;
 120   }
 121
 122   return false;
 123 }
 124
 125 bool Context::set_hash(memcached_hash_t hash)
 126 {
 127   if (_has_hash)
 128   {
 129     return false;
 130   }
 131
 132   if ((memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_HASH, hash)) != MEMCACHED_SUCCESS)
 133   {
 134     return false;
 135   }
 136
 137   return _has_hash= true;
 138 }