nodejs实现文件/目录的压缩和解压

在nodejs里实现文件/目录压缩和解压可以通过 compressing 库来实现，compressing 库目前支持多种压缩格式：tar、gzip、tgz、zip。

安装

npm install compressing

使用的时候需要导入

const compressing = require('compressing');

压缩/解压文件

压缩单个文件

compressing.zip.compressFile('/Users/fkong/test/compressing-demo/package.json', '/Users/fkong/test/package.json.zip')
  .then(() => {
    console.log('success');
  })
  .catch(err => {
    console.log(err);
  });

如果要压缩多个文件，可以使用stream的方式，如下：

const zipStream = new compressing.zip.Stream();
zipStream.addEntry('/Users/fkong/test/compressing-demo/package.json');
zipStream.addEntry('/Users/fkong/test/compressing-demo/package-lock.json');
const destStream = fs.createWriteStream('/Users/fkong/test/destination.zip');
zipStream.pipe(destStream)
  .on('finish', () => {
    console.log('success');
  })
  .on('error', () => {
    console.log('failure');
  });

解压文件到指定目录

compressing.zip.uncompress('/Users/fkong/test/package.json.zip', '/tmp')
  .then(() => {
    console.log('success');
  })
  .catch(err => {
    console.log(err);
  });

压缩/解压目录

压缩一个目录

compressing.zip.compressDir('/Users/fkong/test/compressing-demo', '/Users/fkong/test/compressing-demo.zip')
  .then(() => {
    console.log('success');
  })
  .catch(err => {
    console.log(err);
  });

解压文件到指定目录

compressing.zip.uncompress('/Users/fkong/test/compressing-demo.zip', '/tmp')
  .then(() => {
    console.log('success');
  })
  .catch(err => {
    console.log(err);
  });