mirror of https://github.com/axmolengine/axmol.git
262 lines
8.3 KiB
C++
262 lines
8.3 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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Copyright (c) 2017-2020 c4games.com.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __SUPPORT_CCUSERDEFAULT_H__
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#define __SUPPORT_CCUSERDEFAULT_H__
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#include "platform/CCPlatformMacros.h"
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#include <string>
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#include <unordered_map>
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#include "mio/mio.hpp"
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#include "yasio/cxx17/string_view.hpp"
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/**
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* @addtogroup base
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* @{
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*/
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NS_CC_BEGIN
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/**
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* UserDefault acts as a tiny database. You can save and get base type values by it.
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* For example, setBoolForKey("played", true) will add a bool value true into the database.
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* Its key is "played". You can get the value of the key by getBoolForKey("played").
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*
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* It supports the following base types:
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* bool, int, float, double, string
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*
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* @warning: On windows, linux, use XML to store data, which means there are some limitations of
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* the key string, for example, `/` is not valid.
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*/
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class CC_DLL UserDefault
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{
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public:
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// get value methods
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/**
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* Get bool value by key, if the key doesn't exist, will return false.
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* You can set the default value, or it is false.
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* @param key The key to get value.
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* @return Bool value by `key`.
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* @js NA
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*/
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bool getBoolForKey(const char* key);
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/**
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* Get bool value by key, if the key doesn't exist, will return passed default value.
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* @param key The key to get value.
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* @param defaultValue The default value to return if the key doesn't exist.
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* @js NA
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*/
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virtual bool getBoolForKey(const char* key, bool defaultValue);
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/**
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* Get integer value by key, if the key doesn't exist, will return 0.
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* You can set the default value, or it is 0.
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* @param key The key to get value.
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* @return Integer value of the key.
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* @js NA
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*/
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int getIntegerForKey(const char* key);
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/**
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* Get bool value by key, if the key doesn't exist, will return passed default value.
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* @param key The key to get value.
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* @param defaultValue The default value to return if the key doesn't exist.
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* @return Integer value of the key.
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* @js NA
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*/
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virtual int getIntegerForKey(const char* key, int defaultValue);
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/**
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* Get float value by key, if the key doesn't exist, will return 0.0.
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* @param key The key to get value.
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* @return Float value of the key.
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* @js NA
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*/
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float getFloatForKey(const char* key);
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/**
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* Get float value by key, if the key doesn't exist, will return passed default value.
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* @param key The key to get value.
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* @param defaultValue The default value to return if the key doesn't exist.
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* @return Float value of the key.
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* @js NA
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*/
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virtual float getFloatForKey(const char* key, float defaultValue);
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/**
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* Get double value by key, if the key doesn't exist, will return 0.0.
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* @param key The key to get value.
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* @return Double value of the key.
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* @js NA
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*/
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double getDoubleForKey(const char* key);
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/**
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* Get double value by key, if the key doesn't exist, will return passed default value.
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* @param key The key to get value.
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* @param defaultValue The default value to return if the key doesn't exist.
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* @return Double value of the key.
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* @js NA
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*/
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virtual double getDoubleForKey(const char* key, double defaultValue);
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/**
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* Get string value by key, if the key doesn't exist, will return an empty string.
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* @param key The key to get value.
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* @return String value of the key.
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* @js NA
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*/
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std::string getStringForKey(const char* key);
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/**
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* Get string value by key, if the key doesn't exist, will return passed default value.
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* @param key The key to get value.
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* @param defaultValue The default value to return if the key doesn't exist.
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* @return String value of the key.
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* @js NA
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*/
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virtual std::string getStringForKey(const char* key, const std::string & defaultValue);
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// set value methods
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/**
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* Set bool value by key.
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* @param key The key to set.
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* @param value A bool value to set to the key.
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* @js NA
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*/
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virtual void setBoolForKey(const char* key, bool value);
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/**
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* Set integer value by key.
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* @param key The key to set.
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* @param value A integer value to set to the key.
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* @js NA
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*/
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virtual void setIntegerForKey(const char* key, int value);
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/**
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* Set float value by key.
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* @param key The key to set.
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* @param value A float value to set to the key.
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* @js NA
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*/
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virtual void setFloatForKey(const char* key, float value);
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/**
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* Set double value by key.
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* @param key The key to set.
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* @param value A double value to set to the key.
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* @js NA
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*/
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virtual void setDoubleForKey(const char* key, double value);
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/**
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* Set string value by key.
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* @param key The key to set.
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* @param value A string value to set to the key.
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* @js NA
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*/
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virtual void setStringForKey(const char* key, const std::string & value);
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/**
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* You should invoke this function to save values set by setXXXForKey().
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* @js NA
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*/
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virtual void flush();
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/**
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* delete any value by key,
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* @param key The key to delete value.
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* @js NA
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*/
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virtual void deleteValueForKey(const char* key);
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/** Returns the singleton.
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* @js NA
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* @lua NA
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*/
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static UserDefault* getInstance();
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/**
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* @js NA
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*/
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static void destroyInstance();
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/**
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* You can inherit from platform dependent implementation of UserDefault, such as UserDefaultAndroid,
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* and use this function to set delegate, then UserDefault will invoke delegate's implementation.
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* For example, your store native data base or other format store.
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*
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* If you don't want to system default implementation after setting delegate, you can just pass nullptr
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* to this function.
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*
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* @warning It will delete previous delegate
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*/
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static void setDelegate(UserDefault *delegate);
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/* AES cfb128 encrypt support
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** @params:
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** key: 16bytes key
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** iv: 16bytes iv
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*/
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static void setEncryptEnabled(bool enabled, const cxx17::string_view& key, const cxx17::string_view& iv);
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static void encrypt(std::string& inout, int enc);
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static void encrypt(char* inout, size_t size, int enc);
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protected:
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UserDefault();
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virtual ~UserDefault();
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void init();
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void closeFileMapping();
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void setValueForKey(const std::string& key, const std::string& value);
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private:
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std::unordered_map<std::string, std::string> _values;
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static UserDefault* _userDefault;
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std::string _filePath;
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int _fd = -1; // the file handle for data persistence
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std::shared_ptr<mio::mmap_sink> _rwmmap;
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int _curMapSize = 4096; // init mapsize is 4K
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int _realSize = 0; // real data size without key/value entities count field
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bool _initialized = false;
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// cfb128 encrpyt args
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static bool _encryptEnabled;
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static std::string _key;
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static std::string _iv;
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};
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NS_CC_END
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// end of base group
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/** @} */
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#endif // __SUPPORT_CCUSERDEFAULT_H__
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