[cocos2dx_Lua]自定义本地化数据

概述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

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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