[cocos2dx_Lua]自定义本地化数据

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GameStateDB.lua

quick-cocos2d-x3.3版本中，framework/cc/utils/GameState.lua已经提供了GameStateDB.lua中的方法

--本地存储的加密文件local m = class( "GameStateDB" )m.ERROR_INVALID_FILE_CONTENTS = -1m.ERROR_HASH_MISS_MATCH       = -2m.ERROR_STATE_FILE_NOT_FOUND  = -3local crypto = require(cc.PACKAGE_NAME .. ".crypto")local json   = require(cc.PACKAGE_NAME .. ".json")function m:ctor()    self.encodeSign  = "=GS="    self._fileName   = "GameStateDB.txt"    self._cbHandle   = nil    self.secretKey   = nilendfunction m:init(_cbHandle, fileName, secretKey_)    if type(_cbHandle) ~= "function" then        print("m:init() - invalid self._cbHandle")        return false    end    self._cbHandle = _cbHandle    if type(fileName) == "string" then        self._fileName = fileName    end    if type(secretKey_) == "string" then        self.secretKey = secretKey_    end    self._cbHandle({        eventName  = "init",        filename   = self:getGameStateDBPath(),        isEncrypt  = type(self.secretKey) == "string"    })    return trueend--返回保存是否成功结果及保存存档字符串function m:save(newValues)    local function encode_(values)        local strValues = json.encode(values)        local md5 = crypto.md5(strValues..self.secretKey) --md5码，用于校验数据的完整性，安全性        local contents = json.encode({md5 = md5, strValues = strValues})        return crypto.encodeBase64(self.encodeSign..contents) --数据加密    end    local values = self._cbHandle({        eventName   = "save",        values      = newValues,        isEncrypt   = type(self.secretKey) == "string"    })    if type(values) ~= "table" then        print("m:save() - listener return invalid data")        return false    end    local filename = self:getGameStateDBPath()    local ret = false    local saveStr = ""    if self.secretKey then        saveStr = encode_(values)        ret = io.writefile(filename, saveStr)    else        saveStr = json.encode(values)        if type(saveStr) == "string" then            ret = io.writefile(filename, saveStr)        end    end    printf("m:save() - update file \"%s\"", filename)    return ret,saveStrendfunction m:load(_strData)    local function isEncodedContents_(contents)        return string.sub(contents, 1, string.len(self.encodeSign)) == self.encodeSign    end    local function decode_(fileContents)        local contents = string.sub(fileContents, string.len(self.encodeSign) + 1)        local j = json.decode(contents)        if type(j) ~= "table" then            print("m:decode_() - invalid contents")            return {errorCode = m.ERROR_INVALID_FILE_CONTENTS}        end        local hash,strValues = j.md5, j.strValues        local testHash = crypto.md5(strValues..self.secretKey)        if testHash ~= hash then            print("m:decode_() - hash miss match")            return {errorCode = m.ERROR_HASH_MISS_MATCH}        end        local values = json.decode(strValues)        if type(values) ~= "table" then            print("m:decode_() - invalid state data")            return {errorCode = m.ERROR_INVALID_FILE_CONTENTS}        end        return {values = values}    end    local contents = nil    if _strData == nil then        local filename = self:getGameStateDBPath()        if not io.exists(filename) then            printf("m:load() - file \"%s\" not found", filename)            return self._cbHandle({eventName = "load", errorCode = m.ERROR_STATE_FILE_NOT_FOUND})        end        contents = io.readfile(filename)        printf("m:load() - get values from \"%s\"", filename)    else        printf("m:load() with function!!!")        contents = _strData    end--解密    contents = crypto.decodeBase64(contents)    local values    local isEncrypt = false    if self.secretKey and isEncodedContents_(contents) then        local d = decode_(contents)        if d.errorCode then            return self._cbHandle({eventName = "load", errorCode = d.errorCode})        end        values = d.values        isEncrypt = true    else        values = json.decode(contents)        if type(values) ~= "table" then            print("m:load() - invalid data")            return self._cbHandle({eventName = "load", errorCode = m.ERROR_INVALID_FILE_CONTENTS})        end    end    return self._cbHandle({        eventName   = "load",        values      = values,        isEncrypt   = isEncrypt,        time        = os.time()    })endfunction m:getGameStateDBPath()    return string.gsub(device.writablePath, "[\\\\/]+$", "") .. "/" .. self._fileNameendreturn m

LocalDBMgr.lua

--[[  LocalDBMgr.lua  存储本地数据   数据编码格式:  local data = { a=1,b=2,c=3}  local secretKey = "123"  1.先将data转换成json串s, 然后s 和 secretKey 连接成字符串 c  2.再将c计算md5得到值hash  3.再次以格式 { h = hash, s = s } 编码json 形成 contents  4.将contents进行base64加密]]local LocalDBMgr = class( "LocalDBMgr" )local GameStateDB = require("app.core.GameStateDB").new() --换成GameStateDB的真实路径--数据文件秘钥(不变化)local DATA_SER_KEY = "2k7x2023r49mvpus2t616e13c7965b1"--构造函数function LocalDBMgr:ctor()    self:init()    local function GameStateCallBackHandle(params)      return params    end    GameStateDB:init( GameStateCallBackHandle, "LocalDBMgr", DATA_SER_KEY )    local path = GameStateDB:getGameStateDBPath()    if not io.exists( path ) then       print("[[ 创建LocalDBMgr ]]")       GameStateDB:save( self.db )    else        self:load()    endend--初始化config表function LocalDBMgr:init()     self.db = {        clientVersion   = "1.0.0", -- 客户端版本号        accessToken     = "",--微信token        openID          = "",--openid        bgState         = 1, --背景音乐是否打开        bgValume        = 100, --背景音乐大小        soundState      = 1, --音效是否打开        soundValume     = 100, --音效大小        actImgList      = {},--活动图片列表     }end--数据存储function LocalDBMgr:save(_key , _value)    if not _key or not _value then        assert( nil, "LocalDBMgr save key or value is nil! ")        return    end    self.db[ _key .. '' ] = _value    print( "LocalDBMgr save:",_key,_value )    GameStateDB:save( self.db )end--数据读取function LocalDBMgr:read(_key)    if not _key then        assert( nil, "LocalDBMgr read key is nil!" )        return    end    return self.db[ _key .. '' ]end--数据加载function LocalDBMgr:load()    self:init()--只维护self.db中的数据    local data = GameStateDB:load().values.values    for k,v in pairs(self.db) do        if data[k] then           self.db[k] = data[k] --本地数据重置到缓存数据，        end    end    GameStateDB:save( self.db )endreturn LocalDBMgr

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