翻译一条多语言文本，并写入 android strings.xml 多语言文件

android_proj_trans.js

/**
 * 翻译一条多语言文本，并写入 android strings.xml 多语言文件
 *  （如果没有路由器翻墙，可能需要使用proxychains 执行）
 * //https://github.com/iamtraction/google-translate
 *  1. npm install --save @iamtraction/google-translate
 *  2. pc node ./android_proj_trans.js 
 */

//https://github.com/iamtraction/google-translate
// npm install --save @iamtraction/google-translate
const fs = require('fs');

const translate = require('@iamtraction/google-translate');
// 项目文件
var PROJECT_DIR = "/Users/haozes/Documents/GitHub/yaoyao_mi/share/src/main/res"
//  需要翻译的内容
var TRANS_TEXT =  "Workouts"
// 有时翻译文本是个缩写作为KEY
var TRANS_ABBR = ""
// 文本原语言
var FROM_LAN = "en"


async function translateText(text, fromLan, toLan) {
    return new Promise((resolve, reject) => {
        translate(text, { from: fromLan, to: toLan }).then(res => {
            resolve(res.text);
        }).catch(err => {
            console.error(err);
            reject(err);
        });
    })
}

const directories = source => fs.readdirSync(source, {
    withFileTypes: true
}).reduce((a, c) => {
    c.isDirectory() && a.push(c.name)
    return a
}, [])


// get all .lproj dir
function getLProjDirs(baseDir) {
    let dirs = directories(baseDir);
    let projDirs = dirs.filter(d => d.indexOf("values") >= 0);

    return projDirs
}

function writeTransFile(txtKey, trans, abbr, strFile) {
    console.log(">>> write to:", strFile, "trans:", trans);
    if (fs.existsSync(strFile) == false) {
        console.warn(`${strFile} not exist!!`);
        return
    }

    let line = `<string name="${txtKey}">${trans}</string>`;
    if (abbr) {
        // line = `\n// ${txtKey}`; // 加一行注释
        line = `<string name="${abbr}">${trans}</string>`;
    }
    const buffer = fs.readFileSync(strFile);
    var fileContent = buffer.toString();

    if (fileContent.indexOf(line) >= 0) {
        console.warn(`${line} exists in ${strFile}`);
    } else {
        fileContent = fileContent.replace("</resources>", "\t"+line + "\n</resources>");
        // fs.appendFileSync(strFile, line)
        fs.writeFileSync(strFile, fileContent);
    }
}

// 映射成google translate 目标语言
function getLans(projDirs) {
    return projDirs.map((p) => {
        var arr = p.split("-");
        var dName = "en"
        if (arr.length > 1) {
            dName = arr[1];
        }

        if (p == "values-zh-rTW") {
            dName = "zh-TW"
        }
        else if (p == "values-zh") {
            dName = "zh-CN"
        }
        return dName
    })
}

async function main() {
    let projDirs = getLProjDirs(PROJECT_DIR);
    console.log(projDirs);
    let toLans = getLans(projDirs);
    console.log(toLans);
    projDirs = projDirs.map(p => PROJECT_DIR + "/" + p);
    let stringsFiles = projDirs.map(d => d + "/strings.xml");


    for (var i = 0; i < toLans.length; i++) {
        let lan = toLans[i];
        let strFile = stringsFiles[i];
        let transRet = await translateText(TRANS_TEXT, FROM_LAN, lan);
        writeTransFile(TRANS_TEXT, transRet, TRANS_ABBR, strFile);
    }
    console.log(">>> all done");
}

main();