git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/options/context.h

   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.
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   8  *  Redistribution and use in source and binary forms, with or without
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  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
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  15  *      * Redistributions in binary form must reproduce the above
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  17  *  in the documentation and/or other materials provided with the
  18  *  distribution.
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  20  *      * The names of its contributors may not be used to endorse or
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  22  *  written permission.
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  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  37
  38 #pragma once
  39
  40 #include <libmemcached/memcached.h>
  41
  42 class Context
  43 {
  44 public:
  45   Context(const char *option_string, size_t option_string_length, memcached_st *memc_arg,
  46           memcached_return_t &rc_arg) :
  47     scanner(NULL),
  48     begin(NULL),
  49     pos(0),
  50     memc(NULL),
  51     rc(rc_arg),
  52     _is_server(false),
  53     _end(false)
  54   {
  55     _hostname[0]= 0;
  56     buf= option_string;
  57     length= option_string_length;
  58     memc= memc_arg;
  59     init_scanner();
  60     rc= MEMCACHED_SUCCESS;
  61   }
  62
  63   bool end()
  64   {
  65     return _end;
  66   }
  67
  68   void start();
  69
  70   void set_end()
  71   {
  72     rc= MEMCACHED_SUCCESS;
  73     _end= true;
  74   }
  75
  76   void set_server()
  77   {
  78     _is_server= true;
  79   }
  80
  81   void unset_server()
  82   {
  83     _is_server= false;
  84   }
  85
  86   bool is_server()
  87   {
  88     return _is_server;
  89   }
  90
  91   const char *set_hostname(const char *str, size_t size)
  92   {
  93     size_t copy_length= std::min((size_t)NI_MAXHOST, size);
  94     memcpy(_hostname, str, copy_length);
  95     _hostname[copy_length]= 0;
  96
  97     return _hostname;
  98   }
  99
 100   const char *hostname()
 101   {
 102     return _hostname;
 103   }
 104
 105   ~Context()
 106   {
 107     destroy_scanner();
 108   }
 109
 110   void *scanner;
 111   const char *buf;
 112   const char *begin;
 113   size_t pos;
 114   size_t length;
 115   memcached_st *memc;
 116   memcached_return_t &rc;
 117
 118 protected:
 119   void init_scanner();
 120   void destroy_scanner();
 121
 122 private:
 123   bool _is_server;
 124   bool _end;
 125   char _hostname[NI_MAXHOST];
 126 };