pdns/json.cc

   1 /*
   2     Copyright (C) 2002 - 2015  PowerDNS.COM BV
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License version 2
   6     as published by the Free Software Foundation
   7
   8     Additionally, the license of this program contains a special
   9     exception which allows to distribute the program in binary form when
  10     it is linked against OpenSSL.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20 */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "config.h"
  24 #endif
  25 #include "json.hh"
  26 #include "namespaces.hh"
  27 #include "misc.hh"
  28
  29 using json11::Json;
  30
  31 int intFromJson(const Json container, const std::string& key)
  32 {
  33   auto val = container[key];
  34   if (val.is_number()) {
  35     return val.int_value();
  36   } else if (val.is_string()) {
  37     return std::stoi(val.string_value());
  38   } else {
  39     throw JsonException("Key '" + string(key) + "' not an Integer or not present");
  40   }
  41 }
  42
  43 int intFromJson(const Json container, const std::string& key, const int default_value)
  44 {
  45   auto val = container[key];
  46   if (val.is_number()) {
  47     return val.int_value();
  48   } else if (val.is_string()) {
  49     return std::stoi(val.string_value());
  50   } else {
  51     // TODO: check if value really isn't present
  52     return default_value;
  53   }
  54 }
  55
  56 string stringFromJson(const Json container, const std::string &key)
  57 {
  58   const Json val = container[key];
  59   if (val.is_string()) {
  60     return val.string_value();
  61   } else {
  62     throw JsonException("Key '" + string(key) + "' not present or not a String");
  63   }
  64 }
  65
  66 bool boolFromJson(const Json container, const std::string& key)
  67 {
  68   auto val = container[key];
  69   if (val.is_bool()) {
  70     return val.bool_value();
  71   } else {
  72     throw JsonException("Key '" + string(key) + "' not present or not a Bool");
  73   }
  74 }
  75
  76 bool boolFromJson(const Json container, const std::string& key, const bool default_value)
  77 {
  78   auto val = container[key];
  79   if (val.is_bool()) {
  80     return val.bool_value();
  81   } else {
  82     return default_value;
  83   }
  84 }