66 lines
1.6 KiB
JavaScript
66 lines
1.6 KiB
JavaScript
var fs = require('fs')
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var os = require('os')
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var path = require('path')
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var crypto = require('crypto')
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var mkdirp = require('mkdirp')
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function getFilename (req, file, cb) {
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crypto.randomBytes(16, function (err, raw) {
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cb(err, err ? undefined : raw.toString('hex'))
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})
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}
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function getDestination (req, file, cb) {
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cb(null, os.tmpdir())
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}
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function DiskStorage (opts) {
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this.getFilename = (opts.filename || getFilename)
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if (typeof opts.destination === 'string') {
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mkdirp.sync(opts.destination)
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this.getDestination = function ($0, $1, cb) { cb(null, opts.destination) }
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} else {
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this.getDestination = (opts.destination || getDestination)
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}
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}
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DiskStorage.prototype._handleFile = function _handleFile (req, file, cb) {
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var that = this
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that.getDestination(req, file, function (err, destination) {
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if (err) return cb(err)
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that.getFilename(req, file, function (err, filename) {
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if (err) return cb(err)
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var finalPath = path.join(destination, filename)
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var outStream = fs.createWriteStream(finalPath)
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file.stream.pipe(outStream)
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outStream.on('error', cb)
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outStream.on('finish', function () {
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cb(null, {
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destination: destination,
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filename: filename,
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path: finalPath,
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size: outStream.bytesWritten
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})
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})
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})
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})
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}
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DiskStorage.prototype._removeFile = function _removeFile (req, file, cb) {
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var path = file.path
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delete file.destination
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delete file.filename
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delete file.path
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fs.unlink(path, cb)
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}
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module.exports = function (opts) {
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return new DiskStorage(opts)
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}
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