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95 lines
2.7 KiB
95 lines
2.7 KiB
3 years ago
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# Archiver
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A streaming interface for archive generation
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Visit the [API documentation](https://www.archiverjs.com/) for a list of all methods available.
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## Install
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```bash
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npm install archiver --save
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```
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## Quick Start
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```js
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// require modules
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const fs = require('fs');
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const archiver = require('archiver');
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// create a file to stream archive data to.
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const output = fs.createWriteStream(__dirname + '/example.zip');
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const archive = archiver('zip', {
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zlib: { level: 9 } // Sets the compression level.
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});
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// listen for all archive data to be written
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// 'close' event is fired only when a file descriptor is involved
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output.on('close', function() {
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console.log(archive.pointer() + ' total bytes');
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console.log('archiver has been finalized and the output file descriptor has closed.');
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});
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// This event is fired when the data source is drained no matter what was the data source.
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// It is not part of this library but rather from the NodeJS Stream API.
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// @see: https://nodejs.org/api/stream.html#stream_event_end
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output.on('end', function() {
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console.log('Data has been drained');
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});
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// good practice to catch warnings (ie stat failures and other non-blocking errors)
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archive.on('warning', function(err) {
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if (err.code === 'ENOENT') {
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// log warning
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} else {
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// throw error
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throw err;
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}
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});
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// good practice to catch this error explicitly
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archive.on('error', function(err) {
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throw err;
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});
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// pipe archive data to the file
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archive.pipe(output);
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// append a file from stream
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const file1 = __dirname + '/file1.txt';
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archive.append(fs.createReadStream(file1), { name: 'file1.txt' });
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// append a file from string
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archive.append('string cheese!', { name: 'file2.txt' });
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// append a file from buffer
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const buffer3 = Buffer.from('buff it!');
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archive.append(buffer3, { name: 'file3.txt' });
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// append a file
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archive.file('file1.txt', { name: 'file4.txt' });
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// append files from a sub-directory and naming it `new-subdir` within the archive
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archive.directory('subdir/', 'new-subdir');
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// append files from a sub-directory, putting its contents at the root of archive
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archive.directory('subdir/', false);
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// append files from a glob pattern
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archive.glob('file*.txt', {cwd:__dirname});
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// finalize the archive (ie we are done appending files but streams have to finish yet)
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// 'close', 'end' or 'finish' may be fired right after calling this method so register to them beforehand
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archive.finalize();
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```
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## Formats
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Archiver ships with out of the box support for TAR and ZIP archives.
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You can register additional formats with `registerFormat`.
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You can check if format already exists before to register a new one with `isRegisteredFormat`.
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_Formats will be changing in the future to implement a middleware approach._
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