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.
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  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 "libmemcached/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   memcached_array_st *real_name= memcached_strcpy(self, filename->c_str, filename->size);
  57
  58   if (not real_name)
  59     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  60
  61   FILE *fp= fopen(memcached_array_string(real_name), "r");
  62   if (! fp)
  63   {
  64     memcached_string_t error_message= memcached_array_to_string(real_name);
  65     memcached_return_t rc=  memcached_set_errno(self, errno, &error_message);
  66     memcached_array_free(real_name);
  67     return rc;
  68   }
  69   memcached_array_free(real_name);
  70
  71   char buffer[BUFSIZ];
  72   memcached_return_t rc= MEMCACHED_INVALID_ARGUMENTS;
  73   while (fgets(buffer, sizeof(buffer), fp))
  74   {
  75     size_t length= strlen(buffer);
  76
  77     if (length == 1 and buffer[0] == '\n')
  78       continue;
  79
  80     rc= memcached_parse_configuration(self, buffer, length);
  81     if (rc != MEMCACHED_SUCCESS)
  82       break;
  83   }
  84   fclose(fp);
  85
  86   return rc;
  87 }
  88
  89 memcached_return_t libmemcached_check_configuration(const char *option_string, size_t length, char *error_buffer, size_t error_buffer_size)
  90 {
  91   memcached_st memc, *memc_ptr;
  92
  93   if (! (memc_ptr= memcached_create(&memc)))
  94     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  95
  96   memcached_return_t rc= memcached_parse_configuration(memc_ptr, option_string, length);
  97   if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
  98   {
  99     strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
 100   }
 101
 102   if (rc== MEMCACHED_SUCCESS && memcached_behavior_get(memc_ptr, MEMCACHED_BEHAVIOR_LOAD_FROM_FILE))
 103   {
 104     memcached_string_t filename= memcached_array_to_string(memc_ptr->configure.filename);
 105     rc= _parse_file_options(memc_ptr, &filename);
 106
 107     if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
 108     {
 109       strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
 110     }
 111   }
 112
 113   memcached_free(memc_ptr);
 114
 115   return rc;
 116 }
 117
 118 memcached_return_t memcached_parse_configuration(memcached_st *self, char const *option_string, size_t length)
 119 {
 120   WATCHPOINT_ASSERT(self);
 121   if (! self)
 122     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 123
 124   memcached_return_t rc;
 125   Context context(option_string, length, self, rc);
 126
 127   context.start();
 128
 129   return rc;
 130 }
 131
 132 void memcached_set_configuration_file(memcached_st *self, const char *filename, size_t filename_length)
 133 {
 134   memcached_array_free(self->configure.filename);
 135   self->configure.filename= memcached_strcpy(self, filename, filename_length);
 136 }
 137
 138 memcached_return_t memcached_parse_configure_file(memcached_st *self, const char *filename, size_t filename_length)
 139 {
 140   if (! self)
 141     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 142
 143   if (! filename || filename_length == 0)
 144     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, NULL);
 145
 146   memcached_string_t tmp;
 147   tmp.c_str= filename;
 148   tmp.size= filename_length;
 149
 150   return _parse_file_options(self, &tmp);
 151 }