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audiobookshelf/server/utils/zipHelpers.js

52 lines
1.7 KiB
JavaScript

const Logger = require('../Logger')
const archiver = require('../libs/archiver')
module.exports.zipDirectoryPipe = (path, filename, res) => {
return new Promise((resolve, reject) => {
// create a file to stream archive data to
res.attachment(filename)
const archive = archiver('zip', {
zlib: { level: 9 } // Sets the compression level.
})
// listen for all archive data to be written
// 'close' event is fired only when a file descriptor is involved
res.on('close', () => {
Logger.info(archive.pointer() + ' total bytes')
Logger.debug('archiver has been finalized and the output file descriptor has closed.')
resolve()
})
// This event is fired when the data source is drained no matter what was the data source.
// It is not part of this library but rather from the NodeJS Stream API.
// @see: https://nodejs.org/api/stream.html#stream_event_end
res.on('end', () => {
Logger.debug('Data has been drained')
})
// good practice to catch warnings (ie stat failures and other non-blocking errors)
archive.on('warning', function (err) {
if (err.code === 'ENOENT') {
// log warning
Logger.warn(`[DownloadManager] Archiver warning: ${err.message}`)
} else {
// throw error
Logger.error(`[DownloadManager] Archiver error: ${err.message}`)
// throw err
reject(err)
}
})
archive.on('error', function (err) {
Logger.error(`[DownloadManager] Archiver error: ${err.message}`)
reject(err)
})
// pipe archive data to the file
archive.pipe(res)
archive.directory(path, false)
archive.finalize()
})
}