git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/options.cc

   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
   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
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  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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  36  */
  37
  38 #include "common.h"
  39
  40 #include <iostream>
  41
  42 #include <libmemcached/options/context.h>
  43
  44 const char *memcached_parse_filename(memcached_st *memc)
  45 {
  46   return memcached_array_string(memc->configure.filename);
  47 }
  48
  49 size_t memcached_parse_filename_length(memcached_st *memc)
  50 {
  51   return memcached_array_size(memc->configure.filename);
  52 }
  53
  54 static memcached_return_t _parse_file_options(memcached_st *self, memcached_string_t *filename)
  55 {
  56   std::string real_name(filename->c_str, filename->size);
  57   FILE *fp= fopen(real_name.c_str(), "r");
  58   if (! fp)
  59   {
  60     memcached_string_t tmp;
  61     tmp.c_str= real_name.c_str();
  62     tmp.size= real_name.size();
  63     return memcached_set_errno(self, errno, &tmp);
  64   }
  65
  66   char buffer[BUFSIZ];
  67   memcached_return_t rc= MEMCACHED_INVALID_ARGUMENTS;
  68   while (fgets(buffer, sizeof(buffer), fp))
  69   {
  70     size_t length= strlen(buffer);
  71
  72     if (length == 1 and buffer[0] == '\n')
  73       continue;
  74
  75     rc= memcached_parse_configuration(self, buffer, length);
  76     if (rc != MEMCACHED_SUCCESS)
  77       break;
  78   }
  79   fclose(fp);
  80
  81   return rc;
  82 }
  83
  84 memcached_return_t libmemcached_check_configuration(const char *option_string, size_t length, char *error_buffer, size_t error_buffer_size)
  85 {
  86   memcached_st memc, *memc_ptr;
  87
  88   if (! (memc_ptr= memcached_create(&memc)))
  89     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  90
  91   memcached_return_t rc= memcached_parse_configuration(memc_ptr, option_string, length);
  92   if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
  93   {
  94     strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
  95   }
  96
  97   if (rc== MEMCACHED_SUCCESS && memcached_behavior_get(memc_ptr, MEMCACHED_BEHAVIOR_LOAD_FROM_FILE))
  98   {
  99     memcached_string_t filename= memcached_array_to_string(memc_ptr->configure.filename);
 100     rc= _parse_file_options(memc_ptr, &filename);
 101
 102     if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
 103     {
 104       strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
 105     }
 106   }
 107
 108   memcached_free(memc_ptr);
 109
 110   return rc;
 111 }
 112
 113 memcached_return_t memcached_parse_configuration(memcached_st *self, char const *option_string, size_t length)
 114 {
 115   WATCHPOINT_ASSERT(self);
 116   if (! self)
 117     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 118
 119   memcached_return_t rc;
 120   Context context(option_string, length, self, rc);
 121
 122   context.start();
 123
 124   return rc;
 125 }
 126
 127 void memcached_set_configuration_file(memcached_st *self, const char *filename, size_t filename_length)
 128 {
 129   memcached_array_free(self->configure.filename);
 130   self->configure.filename= memcached_strcpy(self, filename, filename_length);
 131 }
 132
 133 memcached_return_t memcached_parse_configure_file(memcached_st *self, const char *filename, size_t filename_length)
 134 {
 135   if (! self)
 136     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 137
 138   if (! filename || filename_length == 0)
 139     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 140
 141   memcached_string_t tmp;
 142   tmp.c_str= filename;
 143   tmp.size= filename_length;
 144
 145   return _parse_file_options(self, &tmp);
 146 }