Slide 90
Slide 90 text
gzipStream.on('data', data => {
const canContinue = destStream.write(data)
if (!canContinue) {
gzipStream.pause()
destStream.once('drain', () => {
gzipStream.resume()
})
}
})
gzipStream.on('end', () => {
destStream.end()
})
// TODO: handle errors! >:)
// stream-copy-gzip.js
const {
createReadStream,
createWriteStream
} = require('fs')
const { createGzip } = require('zlib')
const [, , src, dest] = process.argv
const srcStream = createReadStream(src)
const gzipStream = createGzip()
const destStream = createWriteStream(dest)
srcStream.on('data', data => {
const canContinue = gzipStream.write(data)
if (!canContinue) {
srcStream.pause()
gzipStream.once('drain', () => {
srcStream.resume()
})
}
})
srcStream.on('end', () => {
// check if there's buffered data left
const remainingData = gzipStream.read()
if (remainingData !== null) {
destStream.write()
}
gzipStream.end()
})
@loige
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