如何确保tar文件全部提取完成后再执行重命名操作？

我通过tarFs将.tar文件内容提取到指定路径后，需要对提取出的6个文件执行重命名操作。在VS Code项目资源管理器中能看到所有文件，但运行时发现.on('finish')的执行早于tar文件提取完成，导致最后一个文件重命名失败。我曾将重命名代码包裹在setTimeout中临时解决问题，但这并非可靠方案；尝试监听close事件（code-2）也未生效。请问如何强制重命名操作在所有6个文件提取完成后执行？

code-1:

const tarStream = fs.createReadStream(pathToTarFileTobeExtracted);
tarStream.pipe(tarFs.extract(untarPath + outputFolderPerUntared + '\\' + outputFolderPerUntaredForTS2))
.on('finish', () => {
    setTimeout(() => {
        fs.renameSync(
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BANDS_COMPOSITE_NAME.description,
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[0]);
        fs.renameSync(
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_1_NAME.description,
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[1]);
        fs.renameSync(
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_2_NAME.description,
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[2]);
        fs.renameSync(
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_3_NAME.description,
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[3]);
        fs.renameSync(
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_4_NAME.description,
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[4]);
        fs.renameSync(
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_5_NAME.description,
            untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[5]);

        
        console.log('xcx ***** old:', untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_5_NAME.description)
        console.log('xcx ***** new:', untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[5])
    }, 1000);
})

code-2:

// 尝试解决问题的代码
const tarStream = fs.createReadStream(pathToTarFileTobeExtracted);
const extractedStream = tarFs.extract(untarPath + outputFolderPerUntared + '\\' + outputFolderPerUntaredForTS2);
tarStream.pipe(extractedStream);
extractedStream
.on('close', () => {
    fs.renameSync(
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BANDS_COMPOSITE_NAME.description,
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[0]);
    fs.renameSync(
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_1_NAME.description,
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[1]);
    fs.renameSync(
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_2_NAME.description,
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[2]);
    fs.renameSync(
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_3_NAME.description,
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[3]);
    fs.renameSync(
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_4_NAME.description,
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[4]);
    fs.renameSync(
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_5_NAME.description,
        untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[5]);

    
    console.log('xcx ***** old:', untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + SysConstants.CONST_BAND_5_NAME.description)
    console.log('xcx ***** new:', untarPath + outputFolderPerUntared + '\\' +  outputFolderPerUntaredForTS2 + '\\' + titlesOfBandsAsGeoTIFFForTS2[5])
})

方法1：监听tarFs的end事件（推荐） #

tarFs的extract流真正代表所有文件提取完成的事件是end，而非finish或close：

• finish是写入流接收完所有数据的事件，但此时操作系统可能还未将数据完全刷入磁盘；
• close是流底层资源关闭的事件，可能早于文件写入完成；
• end会在所有文件完全写入磁盘后触发。

修改后的代码：

const tarStream = fs.createReadStream(pathToTarFileTobeExtracted);
const extractStream = tarFs.extract(`${untarPath}${outputFolderPerUntared}\\${outputFolderPerUntaredForTS2}`);

tarStream.pipe(extractStream);

extractStream.on('end', () => {
    const targetDir = `${untarPath}${outputFolderPerUntared}\\${outputFolderPerUntaredForTS2}\\`;
    
    fs.renameSync(targetDir + SysConstants.CONST_BANDS_COMPOSITE_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[0]);
    fs.renameSync(targetDir + SysConstants.CONST_BAND_1_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[1]);
    fs.renameSync(targetDir + SysConstants.CONST_BAND_2_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[2]);
    fs.renameSync(targetDir + SysConstants.CONST_BAND_3_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[3]);
    fs.renameSync(targetDir + SysConstants.CONST_BAND_4_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[4]);
    fs.renameSync(targetDir + SysConstants.CONST_BAND_5_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[5]);

    console.log('xcx ***** old:', targetDir + SysConstants.CONST_BAND_5_NAME.description);
    console.log('xcx ***** new:', targetDir + titlesOfBandsAsGeoTIFFForTS2[5]);
});

方法2：用Promise封装（适配异步代码风格） #

如果项目支持async/await，可以把提取操作封装为Promise，确保流程顺序：

const extractTar = (tarPath, outputDir) => {
    return new Promise((resolve, reject) => {
        const tarStream = fs.createReadStream(tarPath);
        const extractStream = tarFs.extract(outputDir);
        
        tarStream.pipe(extractStream);
        
        extractStream.on('end', resolve);
        extractStream.on('error', reject);
        tarStream.on('error', reject);
    });
};

// 执行逻辑
(async () => {
    try {
        const outputDir = `${untarPath}${outputFolderPerUntared}\\${outputFolderPerUntaredForTS2}`;
        await extractTar(pathToTarFileTobeExtracted, outputDir);
        
        // 执行重命名
        const targetDir = `${outputDir}\\`;
        fs.renameSync(targetDir + SysConstants.CONST_BANDS_COMPOSITE_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[0]);
        fs.renameSync(targetDir + SysConstants.CONST_BAND_1_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[1]);
        fs.renameSync(targetDir + SysConstants.CONST_BAND_2_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[2]);
        fs.renameSync(targetDir + SysConstants.CONST_BAND_3_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[3]);
        fs.renameSync(targetDir + SysConstants.CONST_BAND_4_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[4]);
        fs.renameSync(targetDir + SysConstants.CONST_BAND_5_NAME.description, targetDir + titlesOfBandsAsGeoTIFFForTS2[5]);

        console.log('重命名完成');
    } catch (err) {
        console.error('提取或重命名失败:', err);
    }
})();

内容的提问来源于stack exchange，提问作者Amr