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December 23, 2015 03:39
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| fs = require 'fs' | |
| urlLib = require 'url' | |
| path = require 'path' | |
| mkdirp = require 'mkdirp' | |
| downloader = require 'downloader' | |
| exports.get = ({ url, dir, onDownload }, callback) -> | |
| onDownload ?= (callback) -> callback() | |
| {pathname} = urlLib.parse(url) | |
| filename = path.basename(pathname) | |
| fullpath = path.resolve(__dirname, dir, filename) | |
| dirname = path.dirname(fullpath) | |
| mkdirp dirname, (err) -> | |
| return callback(err) if err? | |
| fs.exists fullpath, (exists) -> | |
| if exists | |
| callback(null, fullpath) | |
| else | |
| onDownload -> | |
| downloader.on 'done', -> | |
| callback(null, fullpath) | |
| downloader.on 'error', (msg) -> | |
| callback(msg) | |
| downloader.download(url, dirname + '/') |
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