downlow

Downloading files on the DL

Installation

gem install downlow

Tested against Ruby 1.8.7 and 1.9.1

What

Why is downloading and extracting files such a pain in Ruby?

Downlow to the rescue.

$ irb -rubygems -rdownlow
>> DL('http://gist.github.com/gists/290151/download', '~/Desktop/gist')
=> #<Pathname:/Users/aaronquint/Desktop/gist>

$ ls -l ~/Desktop/gist/
total 8
drwxrwxr-x  3 aaronquint  aaronquint  102 Jan 30 00:17 gist290151-4d195b0fc72a4b5e52f8e2b5d1670d078c03a018

>> DL('git://github.com/quirkey/resque-status.git', '~/Desktop')
Initialized empty Git repository in /Users/aaronquint/Sites/__active/downlow/tmp/resque-status/.git/
remote: Counting objects: 323, done.
remote: Compressing objects: 100% (186/186), done.
remote: Total 323 (delta 166), reused 169 (delta 83)
Receiving objects: 100% (323/323), 42.84 KiB, done.
Resolving deltas: 100% (166/166), done.
=> #<Pathname:/Users/aaronquint/Desktop/resque-status>

Sweet.

BONUS BEATS FOR GITHUB Downloads the tarball and extracts.

>> DL('gh://quirkey/sammy', ~/Desktop')

Usage

Downlow is comprised of two main features: Fetchers and Extractors. They do what they sound like they do.

To just fetch a remote (or local file or directory)

Downlow::Fetcher.fetch('remote', :destination => 'local')

Fetcher currently handles these styles of URL

Git (git://)
HTTP (http://)
Github (gh://user/project)
Local (anything else)

Extractors take a local file, and extract them based on their extension:

Downlow::Extractor.extract('local.archive', :destination => 'directory')

The extractors currently supported are

.tar.gz
.zip
dir (everything else)

DL() is just an alias for Downlow.get() which is just a wrapper around .fetch() and then .extract()

Thanks

Thanks to @mxcl for the awesome pathname extensions in homebrew/ Thanks to @defunkt as I took some ideas from rip.

Note on Patches/Pull Requests