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
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38 #include <libmemcached/common.h>
  39
  40 #include <libmemcached/options/context.h>
  41
  42 const char *memcached_parse_filename(memcached_st *memc)
  43 {
  44   return memcached_array_string(memc->configure.filename);
  45 }
  46
  47 size_t memcached_parse_filename_length(memcached_st *memc)
  48 {
  49   return memcached_array_size(memc->configure.filename);
  50 }
  51
  52 static memcached_return_t _parse_file_options(memcached_st *self, memcached_string_t *filename)
  53 {
  54   memcached_array_st *real_name= memcached_strcpy(self, filename->c_str, filename->size);
  55
  56   if (not real_name)
  57     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  58
  59   FILE *fp= fopen(memcached_array_string(real_name), "r");
  60   if (! fp)
  61   {
  62     memcached_string_t error_message= memcached_array_to_string(real_name);
  63     memcached_return_t rc=  memcached_set_errno(self, errno, &error_message);
  64     memcached_array_free(real_name);
  65     return rc;
  66   }
  67   memcached_array_free(real_name);
  68
  69   char buffer[BUFSIZ];
  70   memcached_return_t rc= MEMCACHED_INVALID_ARGUMENTS;
  71   while (fgets(buffer, sizeof(buffer), fp))
  72   {
  73     size_t length= strlen(buffer);
  74
  75     if (length == 1 and buffer[0] == '\n')
  76       continue;
  77
  78     rc= memcached_parse_configuration(self, buffer, length);
  79     if (rc != MEMCACHED_SUCCESS)
  80       break;
  81   }
  82   fclose(fp);
  83
  84   return rc;
  85 }
  86
  87 memcached_return_t libmemcached_check_configuration(const char *option_string, size_t length, char *error_buffer, size_t error_buffer_size)
  88 {
  89   memcached_st memc, *memc_ptr;
  90
  91   if (error_buffer_size)
  92     error_buffer[0]= 0;
  93
  94   if (! (memc_ptr= memcached_create(&memc)))
  95     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  96
  97   memcached_return_t rc= memcached_parse_configuration(memc_ptr, option_string, length);
  98   if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
  99   {
 100     strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
 101   }
 102
 103   if (rc== MEMCACHED_SUCCESS && memcached_behavior_get(memc_ptr, MEMCACHED_BEHAVIOR_LOAD_FROM_FILE))
 104   {
 105     memcached_string_t filename= memcached_array_to_string(memc_ptr->configure.filename);
 106     rc= _parse_file_options(memc_ptr, &filename);
 107
 108     if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
 109     {
 110       strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
 111     }
 112   }
 113
 114   memcached_free(memc_ptr);
 115
 116   return rc;
 117 }
 118
 119 memcached_return_t memcached_parse_configuration(memcached_st *self, char const *option_string, size_t length)
 120 {
 121   WATCHPOINT_ASSERT(self);
 122   if (! self)
 123   {
 124     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 125   }
 126
 127   memcached_return_t rc;
 128   Context context(option_string, length, self, rc);
 129
 130   context.start();
 131
 132   return rc;
 133 }
 134
 135 void memcached_set_configuration_file(memcached_st *self, const char *filename, size_t filename_length)
 136 {
 137   memcached_array_free(self->configure.filename);
 138   self->configure.filename= memcached_strcpy(self, filename, filename_length);
 139 }
 140
 141 memcached_return_t memcached_parse_configure_file(memcached_st *self, const char *filename, size_t filename_length)
 142 {
 143   if (! self)
 144     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 145
 146   if (! filename || filename_length == 0)
 147     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 148
 149   memcached_string_t tmp;
 150   tmp.c_str= filename;
 151   tmp.size= filename_length;
 152
 153   return _parse_file_options(self, &tmp);
 154 }