Dogcows Code - chaz/yoink/blob - src/Moof/Settings.hh

   1
   2 /*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
   3 **]  All rights reserved.
   4 *
   5 * vi:ts=4 sw=4 tw=75
   6 *
   7 * Distributable under the terms and conditions of the 2-clause BSD license;
   8 * see the file COPYING for a complete text of the license.
   9 *
  10 **************************************************************************/
  11
  12 #ifndef _MOOF_SETTINGS_HH_
  13 #define _MOOF_SETTINGS_HH_
  14
  15 /**
  16  * @file Settings.hh
  17  * Load, store, save program settings.
  18  */
  19
  20 #include <string>
  21 #include <vector>
  22
  23 #include <boost/algorithm/string.hpp>
  24
  25 #include <Moof/Log.hh>
  26 #include <Moof/Script.hh>
  27
  28
  29 namespace Mf {
  30
  31
  32 class Settings
  33 {
  34 public:
  35
  36         Settings()
  37         {
  38                 mScript.importBaseLibrary();
  39                 importLogFunctions(mScript);
  40         }
  41
  42         ~Settings();
  43
  44         void parseArgs(int argc, char* argv[]);
  45
  46         void loadFromFiles(const std::string& path);
  47         void loadFromFiles(const std::vector<std::string>& path);
  48
  49         void clear();           // remove all settings
  50
  51         void saveAs(const std::string& path);
  52         void save() const;
  53
  54         template <typename T>
  55         bool get(const std::string& key, T& value) const;
  56
  57 private:
  58
  59         mutable Script  mScript;
  60
  61         std::string             mUserFile;
  62 };
  63
  64
  65 template <typename T>
  66 bool Settings::get(const std::string& key, T& value) const
  67 {
  68         Script::Slot top = mScript[-1];
  69         Script::Slot globals = mScript.getGlobalTable();
  70
  71         std::vector<std::string> fields;
  72         boost::split(fields, key, boost::is_any_of("."));
  73
  74         globals.pushCopy();
  75
  76         std::vector<std::string>::iterator it;
  77         for (it = fields.begin(); it != fields.end(); ++it)
  78         {
  79                 if (top.isTable())
  80                 {
  81                         top.pushField(*it);
  82                 }
  83                 else
  84                 {
  85                         mScript.clear();
  86                         return false;
  87                 }
  88         }
  89
  90         bool got = top.get(value);
  91         mScript.clear();
  92         return got;
  93 }
  94
  95
  96 extern Settings settings;
  97
  98
  99 } // namepsace Mf
 100
 101 #endif // _MOOF_SETTINGS_HH_
 102