extension.js

// The module 'vscode' contains the VS Code extensibility API
// Import the module and reference it with the alias vscode in your code below
var vscode = require('vscode');
var request = require('request');
var crypto = require('crypto');
var baidu = require('./baidu');

function hashCode(text) {
    var n = 0, t, i, r;
    if (text.length === 0)
        return n;
    for (t = 0,
    r = text.length; t < r; t++)
        i = text.charCodeAt(t),
        n = (n << 5) - n + i | 0;
    return n;
}

function b(a, b) {
    for (var d = 0; d < b.length - 2; d += 3) {
        var c = b.charAt(d + 2),
        c = 'a' <= c ? c.charCodeAt(0) - 87 : Number(c),
        c = '+' == b.charAt(d + 1) ? a >>> c : a << c;
        a = '+' == b.charAt(d) ? a + c & 4294967295 : a ^ c
    }
    return a
}
function tk(a, TKK) {
    for (var e = TKK.split('.'), h = Number(e[0]) || 0, g = [], d = 0, f = 0; f < a.length; f++) {
        var c = a.charCodeAt(f);
        128 > c ? g[d++] = c : (2048 > c ? g[d++] = c >> 6 | 192 : (55296 == (c & 64512) && f + 1 < a.length && 56320 == (a.charCodeAt(f + 1) & 64512) ? (c = 65536 + ((c & 1023) << 10) + (a.charCodeAt(++f) & 1023), g[d++] = c >> 18 | 240, g[d++] = c >> 12 & 63 | 128)  : g[d++] = c >> 12 | 224, g[d++] = c >> 6 & 63 | 128), g[d++] = c & 63 | 128)
    }
    a = h;
    for (d = 0; d < g.length; d++) a += g[d],a = b(a, '+-a^+6');
    a = b(a, '+-3^+b+-f');
    a ^= Number(e[1]) || 0;
    0 > a && (a = (a & 2147483647) + 2147483648);
    a %= 1000000;
    return a.toString() + '.' + (a ^ h)
}


// this method is called when your extension is activated
// your extension is activated the very first time the command is executed
function activate(context) {

    // Use the console to output diagnostic information (console.log) and errors (console.error)
    // This line of code will only be executed once when your extension is activated
    console.log('Congratulations, your extension "translation" is now active!');

    // translatebyGoogle("hello");

    // The command has been defined in the package.json file
    // Now provide the implementation of the command with  registerCommand
    // The commandId parameter must match the command field in package.json
     var transDisposable = vscode.commands.registerCommand('translationtoolbox.translate', function () {
        // The code you place here will be executed every time your command is executed

        console.log("translationtoolbox.translate");

    });

    context.subscriptions.push(transDisposable);
    // 调用
    hover2translate();

}

function hover2translate() {
    // 保存上一次选择的内容，防止重复请求
    let preSelection="";
    let preResult="";
    vscode.languages.registerHoverProvider('*', {
		provideHover(document, position, token) {
			// 不可以获取选取的内容，而只是hover的内容
			// let text=document.getText(document.getWordRangeAtPosition(position));
			// 获取当前选择的内容
			let selection = document.getText(vscode.window.activeTextEditor.selection);
            console.log("selection:",selection);
            console.log("preSelection:",preSelection);
            if (selection != "" && selection != " " && selection != preSelection) {
                preSelection = selection;
                let texts = selection.split(/\s+/);
                // if (texts.length < 4) {
                    // 词或短语时                    
                return translatebyBaiDu(selection).then(function (result) {
                        preResult = result;
                        return new vscode.Hover({language:"markdown",value:result});
                    }).catch(function(err){
                        console.log(err);
                    });
                // } else {
                //     // 句子时
                //     var encodeText="";
                //     texts.forEach(function(v){
                //         encodeText += encodeURI(v)+' '
                //     });
                //     // console.log("encodeText",encodeText);
                    
                //     // return translatebyBaiDu(encodeText).then(function (result) {
                //     //     preResult = result;
                //     //     return new vscode.Hover({language:"markdown",value:"[BaiDu]: \n"+result+"\n----------\nHello"});
                //     // }).catch(function(err){
                //     //     console.log(err);
                //     // });

                //     var translations = {};
                //     return translatebyBing(encodeText).then(function (result) {
                //         // preResult = result;
                //         console.log(result);
                //         translations["Bing"]=result;
                //         return translatebyBaiDu(encodeText);
                //         // return result;
                //         // return new vscode.Hover({language:"markdown",value:"[BaiDu]: \n"+result+"\n----------\nHello"});
                //     }).then(function (result) {
                //         console.log(result);
                //         translations["Baidu"]=result;
                //         return translatebyGoogle(encodeText);
                //     }).then(function (result) {
                //         console.log(result);
                //         translations["Google"]=result;
                //     }) .then(function () {
                //         let allResult = "";
                //         for (var key in translations) {
                //             if (translations.hasOwnProperty(key)) {
                //                 var element = translations[key];
                //                 allResult = allResult +"["+ key +"]\n"+element+"\n";
                //             }
                //         }
                //         console.log(allResult);
                //         preResult = allResult;
                //         return new vscode.Hover({language:"markdown",value:allResult});
                //     }) .catch(function(err){
                //         console.log(err);
                //         return new vscode.Hover({language:"markdown",value:"出错了"});
                //     });
                    
                // }

            } else {
                console.log("鼠标发生了移动");
                // 当前Hover的内容
                let cHover = document.getText(document.getWordRangeAtPosition(position));
                if (selection.indexOf(cHover) != -1) {
                    return new vscode.Hover({language:"markdown",value:preResult});
                }
            }
            
		}
	});
}

function translatebyBaiDu(text) {
    return new Promise(function (resolve,reject) {
        console.log('::translatebyBaiDu::');
        baidu(text).then(result => {
            console.log(result);
            resolve(result);
        });
    });
}

function translatebyGoogle(text) {

    // console.log(googleUrl);
    return new Promise(function (resolve,reject) {
        // 获取tkk
        request.get("https://translate.google.cn/",function (e,r,body) {
            // console.log(e);
            // console.log(request.statusCode);
            let TKK = body.match(/TKK=eval\(\'(.*?)\'\);/);
            let _tkk = "";
            if (TKK) {
                let tkk = TKK[1].replace(/\\x3d/g,"=").replace(/\\x27/g,"\'");
                // console.log(tkk);
                _tkk = eval(tkk);
            } else {
                return ;
            }
            // console.log(_tkk);
            let _tk = tk(text,_tkk);
            // console.log(_tk);

            let googleAPI="http://translate.google.cn/translate_a/single?client=t&sl=en&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&pc=1&otf=1&ssel=0&tsel=0&kc=1&tk="+_tk+"&q=";
            let googleUrl=googleAPI + text;
            googleUrl = encodeURI(googleUrl);
            // console.log(googleUrl);
            var options = {
                // url: "http://translate.google.cn/translate_a/single?client=t&sl=en&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&pc=1&otf=1&ssel=0&tsel=0&kc=1&tk=6528.414811&q=hello%20world",
                url : googleUrl,
                headers: {
                    // "Accept-Language":"zh-CN,zh;q=0.8",
                    // "Host":"translate.google.cn",
                    // "Referer":"http://translate.google.cn/",
                    // 不知道为什么非要加上这一个请求头，才能将请求的ip地址引向中国的服务器。。。
                    "User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36"
                }
            };
            request.get(options, function (error, response, body) {
                // console.log(response);
                // 不能直接使用body，因为返回的不是json，会解析出错而为
                if (response.statusCode == 200) {
                    // console.log(eval(body));
                    let evalbody = eval(body);
                    let result = evalbody[0][0][0];
                    // console.log(result);
                    resolve(result);
                }
            });
        });
    });

}

function translatebyBing(text) {
    // bing
    
    return new Promise(function (resolve,reject) {
        // 获取cookie
        var j = request.jar()
        let cookieUrl = "http://www.bing.com/translator/?_=1487063092407";
        request({url: cookieUrl, jar: j}, function () {
            // var cookie_string = j.getCookieString(cookieUrl); // "key1=value1; key2=value2; ..."
            // var cookies = j.getCookies(url);
            // console.log(cookie_string);
            // [{key: 'key1', value: 'value1', domain: "www.google.com", ...}, ...]
            let bingURl = "http://www.bing.com/translator/api/Translate/TranslateArray?from=-&to=zh-CHS";
            let id = hashCode(text);
            let postData = [{"id":id,"text":text}];
            // console.log(postData);
            
            let bing_options = {
                body: postData,
                json: true,
                url: bingURl,
                jar: j
            }
            request.post(bing_options,function (e, r, body) {
                if (!e && body) {
                    let text = body.items[0].text;
                    resolve(text);
                    // console.log(text);
                    // vscode.window.showInformationMessage("bing: "+text);
                }
            });
            // post_req.write(JSON.stringify([{"id":1794106052,"text":"hello world"}]));

        });
    });
}

var YouDao_headers = {
    "Accept": "application/json, text/javascript, */*; q=0.01",
    "Accept-Encoding": "gzip, deflate",
    "Accept-Language": "zh-CN,zh;q=0.8",
    "Cache-Control": "no-cache",
    "Connection": "keep-alive",
    "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
    "DNT": "1",
    "Host": "fanyi.youdao.com",
    "Origin": "http://fanyi.youdao.com",
    "Pragma": "no-cache",
    "Referer": "http://fanyi.youdao.com/",
    "User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
    "X-Requested-With": "XMLHttpRequest"
};

var YouDao_e = {
    "action": "FY_BY_CLICKBUTTION",
    "client": "fanyideskweb",
    "doctype": "json",
    "from": "AUTO",
    "i": "hello",
    "keyfrom": "fanyi.web",
    "salt": "1507884640456",
    "sign": "4b324e531753f05f39fe718e28df61a7",
    "smartresult": "dict",
    "to": "AUTO",
    "typoResult": "true",
    "version": "2.1"
};

function translatebyYouDao(text) {
    // 有道
    return new Promise(
        function (resolve) {
            // MD5算法
            var md5 = crypto.createHash('md5');
            
            // 先获取salt和sign参数
            let salt = "" + ((new Date).getTime() + parseInt(10 * Math.random(), 10));
            let str = "fanyideskweb" + text + salt + "rY0D^0'nM0}g5Mm1z%1G4";
            let sign = md5.update(str).digest('hex');
            console.log(sign);
            // salt = "1507907393207";
            // sign = "eb12ebf61e5611e07613bae9fa5d2de5";
            let youdaoUrl="http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule";
            let YouDao_form = {i:text,from:"AUTO",to:"AUTO",smartresult:"dict",client:"fanyideskweb",salt:salt,sign:sign,doctype:"json",version:"2.1",keyfrom:"fanyi.web",action:"FY_BY_CLICKBUTTION",typoResult:true};
            request.post(youdaoUrl, {form:YouDao_form,headers:YouDao_headers,gzip:true},function (e, r, body) {
                // console.log(r);
                console.log(YouDao_form);
                console.log(body);
                if (body.trim() != "") {
                    let result = JSON.parse(body.trim());
                    let smartResult = result.smartResult;
                    if (smartResult) {
                        let texts =smartResult.entries;
                        let jointexts = texts.join(";\n");
                        resolve(jointexts);
                    } else {
                        let text = result.translateResult[0][0].tgt;
                        resolve(text);
                    }
                }
            });
        }
    );
}

exports.activate = activate;

// this method is called when your extension is deactivated
function deactivate() {
}
exports.deactivate = deactivate;