nodejs简单实现中英文翻译

var fs = require('fs');var http = require('http');var filePath = 'D://WORK_new//';var logPath = 'D://chinese.log';var map = {};var num = 0;var dictionary = (function () {  var map = {};  return {    logPath: 'D://chinese.log',    set: function (key, val) {      map[key] = val || '';    },    get: function (key) {      return map[key]||'';    },    save2File: function () {      fs.writeFile(this.logPath, JSON.stringify(map).replace(/","/g,'",/r/n"'),{encoding:'utf8',flag:'w'}, function (err) {        if (err) throw err;      });     },    loadFile: function (callback) {      fs.readFile(this.logPath, {encoding:'utf8'},function (err, data) {        map = JSON.parse(data);        callback();      })    },    translateByGoogle: function (callback) {      var index = 0;      for (var key in map) {        if (map[key] == '') {          index++;          (function (key) {            http.get("http://translate.google.cn/translate_a/t?client=t&hl=zh-CN&sl=zh-CN&tl=en&ie=UTF-8&oe=UTF-8&oc=2&otf=1&ssel=3&tsel=6&sc=2&q="+key, function(res) {              res.setEncoding('utf8');              var body = "";              res.on('data', function (chunk) {                body+=chunk;                }).on('end', function (){                 var obj = eval('('+body+')');                map[key] = obj[0][0][0];                index--;                if (index == 0) {                  callback();                }              });            }).on('error', function(e) {              console.log('http error');              index--;              if (index == 0) {                callback();              }              console.log("Got error: " + e.message);            });          })(key);        }      }    }  }})();function File () {  var index = 0;  var _readFile = function (pathStr, fileBack, doneBack) {    fs.readFile(pathStr,{encoding:'utf8'}, function (err, data) {      index--;      if (err) {        data = "";        console.log(err,pathStr)        //throw err;      }      fileBack(data,pathStr);      if (index == 0) {        doneBack();      }    });  };  var _walkDir = function (pathStr, fileBack, doneBack) {    fs.readdir(pathStr, function (err, files) {      files.forEach(function (file) {        if(fs.statSync(pathStr + '/' + file).isDirectory()){          _walkDir(pathStr + '/' + file, fileBack, doneBack);        } else {          if (/.js$|.html$|.htm$|.jsp$/.test(file)){            index ++;            _readFile(pathStr + '/' + file, fileBack, doneBack);          }          return;        }      });    });  }  this.walkDir = function (pathStr, fileBack, doneBack) {    index = 0;    _walkDir(pathStr, fileBack, doneBack);  }}//第一步 获取中文dictionary.logPath = logPath;new File().walkDir(filePath, function (data) {  if (!!data) {    var match = data.match(/[/u4e00-/u9faf]+/g);    if (!!match) {      match.forEach(function (mat) {        dictionary.set(mat);      })    }  }}, function () {  console.log('获取中文 OK');  dictionary.save2File();})//第二步 google翻译/*dictionary.loadFile(function () {  dictionary.translateByGoogle(function () {    dictionary.save2File();  })});*///第三步 中文替换/*dictionary.loadFile(function () {  new File().walkDir(filePath, function (data,pathStr) {    fs.writeFile(pathStr, data.replace(/[/u4e00-/u9faf]+/g, function (ch) {      return dictionary.get(ch);    }),{encoding:'ascii',flag:'w'}, function (err) {      if (err) throw err;    });   }, function () {    console.log('中文替换 OK');  })});*/