148 lines
4.0 KiB
C++
148 lines
4.0 KiB
C++
/*
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Copyright (c) 2013 yvt
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This file is part of OpenSpades.
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OpenSpades is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenSpades is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <map>
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#include <string>
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#include <type_traits>
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#include <vector>
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namespace spades {
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enum class SettingItemFlags { None = 0 };
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inline SettingItemFlags operator|(SettingItemFlags lhs, SettingItemFlags rhs)
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{
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using T = std::underlying_type<SettingItemFlags>::type;
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return (SettingItemFlags)(static_cast<T>(lhs) | static_cast<T>(rhs));
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}
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inline SettingItemFlags &operator|=(SettingItemFlags &lhs, SettingItemFlags rhs) {
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using T = std::underlying_type<SettingItemFlags>::type;
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lhs = (SettingItemFlags)(static_cast<T>(lhs) | static_cast<T>(rhs));
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return lhs;
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}
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struct SettingItemDescriptor {
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const std::string defaultValue;
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const SettingItemFlags flags;
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SettingItemDescriptor(const std::string &defaultValue = std::string(),
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SettingItemFlags flags = SettingItemFlags::None)
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: defaultValue(defaultValue), flags(flags) {}
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bool operator==(const SettingItemDescriptor &o) const {
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return defaultValue == o.defaultValue && flags == o.flags;
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}
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bool operator!=(const SettingItemDescriptor &o) const { return !(*this == o); }
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};
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class ISettingItemListener {
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protected:
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ISettingItemListener() = default;
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virtual ~ISettingItemListener() {}
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public:
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virtual void SettingChanged(const std::string &name) = 0;
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};
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class Settings {
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struct Item {
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std::string name;
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std::string string;
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float value;
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int intValue;
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const SettingItemDescriptor *descriptor;
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bool defaults;
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std::vector<ISettingItemListener *> listeners;
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void Load();
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void Set(const std::string &);
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void Set(int);
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void Set(float);
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void NotifyChange();
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};
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std::map<std::string, Item *> items;
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bool loaded;
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Settings();
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Item *GetItem(const std::string &name, const SettingItemDescriptor *descriptor);
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void Save();
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public:
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static Settings *GetInstance();
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class ItemHandle {
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Item *item;
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public:
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ItemHandle(const std::string &name, const SettingItemDescriptor *descriptor);
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void operator=(const std::string &);
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void operator=(int);
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void operator=(float);
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operator std::string();
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operator float();
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operator int();
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operator bool();
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const char *CString();
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const SettingItemDescriptor &GetDescriptor();
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/**
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* Returns whether this config variable is used and defined by the program
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* or not.
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*/
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bool IsUnknown();
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void AddListener(ISettingItemListener *);
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void RemoveListener(ISettingItemListener *);
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};
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void Load();
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void Flush();
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/** Return a list of all config variables, sorted by name. */
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std::vector<std::string> GetAllItemNames();
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};
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/*
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template<const char *name, const char *def>
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class Setting: public Settings::ItemHandle {
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public:
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Setting(): Settings::ItemHandle(name, def, desc){
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}
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};*/
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static inline bool operator==(const std::string &str, Settings::ItemHandle &handle) {
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return str == (std::string)handle;
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}
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// Define SettingItemDescriptor with external linkage so duplicates are
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// detected as linker errors.
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#define DEFINE_SPADES_SETTING(name, ...) \
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spades::SettingItemDescriptor name##_desc{__VA_ARGS__}; \
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static spades::Settings::ItemHandle name(#name, &name##_desc)
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#define SPADES_SETTING(name) static spades::Settings::ItemHandle name(#name, nullptr)
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}
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