lz4
Version:
LZ4 streaming compression and decompression
32 lines (28 loc) • 834 B
JavaScript
/**
* Compress a Buffer
*/
// Modules
var path = require('path')
var fs = require('fs')
var lz4 = require('..')
// Input/Output files
var inputFile = process.argv[2] || 'test'
var outputFile = process.argv[3] || inputFile + lz4.extension
// Load the data
var input = fs.readFileSync( inputFile )
// Timing
console.log('Compressing %s to %s...', inputFile, outputFile)
var startTime = Date.now()
var compressed = lz4.encode(input, { highCompression: true })
var fileSize = fs.statSync(inputFile).size
var outfileSize = fs.statSync(outputFile).size
var delta = Date.now() - startTime
console.log(
'lz4 compressed %d bytes into %d bytes in %dms (%dMb/s)'
, fileSize
, outfileSize
, delta
, Math.round( 100 * fileSize / ( delta * (1 << 20) ) * 1000 ) / 100
)
// Save the uncompressed data
fs.writeFileSync( outputFile, compressed )