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feat: add xz support by google-labs-jules[bot] · Pull Request #116 · node-modules/compressing · GitHub

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feat: add xz support #116

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feat: add xz support #116

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31 changes: 31 additions & 0 deletions index.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,37 @@ interface streamEntryOpts {
suppressSizeWarning?: boolean
}

export namespace xz {

function compressFile(source: sourceType, dest: destType, opts?: any): Promise<void>

function uncompress(source: sourceType, dest: destType, opts?: any): Promise<void>

function decompress(source: sourceType, dest: destType, opts?: any): Promise<void>

export class CompressStream extends ReadStream {

constructor(opts?: {
lzma?: object,
source: sourceType
});

}

export class UncompressStream extends WriteStream {

constructor(opts?: {
lzma?: object,
source: sourceType
});

on(event: string, listener: (...args: any[]) => void): this
on(event: 'error', listener: (err: Error) => void): this

}

}

interface streamHeader {
type: 'file' | 'directory',
name: string
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1 change: 1 addition & 0 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,3 +4,4 @@ exports.zip = require('./lib/zip');
exports.gzip = require('./lib/gzip');
exports.tar = require('./lib/tar');
exports.tgz = require('./lib/tgz');
exports.xz = require('./lib/xz');
35 changes: 35 additions & 0 deletions lib/xz/compress_stream.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
'use strict';

const fs = require('fs');
const lzma = require('lzma-native');
const utils = require('../utils');

class XzCompressStream extends lzma.Compressor {
constructor(opts) {
opts = opts || {};
super(opts.lzma);

const sourceType = utils.sourceType(opts.source);

if (sourceType === 'file') {
const stream = fs.createReadStream(opts.source);
stream.on('error', err => this.emit('error', err));
stream.pipe(this);
return;
}

if (sourceType === 'buffer') {
this.end(opts.source);
return;
}

if (sourceType === 'stream') {
opts.source.on('error', err => this.emit('error', err));
opts.source.pipe(this);
}

// else: waiting to be piped
}
}

module.exports = XzCompressStream;
11 changes: 11 additions & 0 deletions lib/xz/index.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
'use strict';

const utils = require('../utils');
const XzCompressStream = require('./compress_stream');
const XzUncompressStream = require('./uncompress_stream');

exports.CompressStream = XzCompressStream;
exports.UncompressStream = XzUncompressStream;
exports.compressFile = utils.makeFileProcessFn(XzCompressStream);
exports.uncompress = utils.makeFileProcessFn(XzUncompressStream);
exports.decompress = utils.makeFileProcessFn(XzUncompressStream);
38 changes: 38 additions & 0 deletions lib/xz/uncompress_stream.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
'use strict';

const fs = require('fs');
const lzma = require('lzma-native');
const utils = require('../utils');
const streamifier = require('streamifier');

class XzUncompressStream extends lzma.Decompressor {
constructor(opts) {
opts = opts || {};
super(opts.lzma);

const sourceType = utils.sourceType(opts.source);

if (sourceType === 'file') {
const stream = fs.createReadStream(opts.source, opts.fs);
stream.on('error', err => this.emit('error', err));
stream.pipe(this);
return;
}

if (sourceType === 'buffer') {
const stream = streamifier.createReadStream(opts.source, opts.streamifier);
stream.on('error', err => this.emit('error', err));
stream.pipe(this);
return;
}

if (sourceType === 'stream') {
opts.source.on('error', err => this.emit('error', err));
opts.source.pipe(this);
}

// else: waiting to be piped
}
}

module.exports = XzUncompressStream;
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