A post-commit hook for Git to print (and copy to clipboard on OSX) the likely GitHub URL for the commit

post-commit

#!/usr/bin/env ruby

=begin

This hook will print the likely GitHub URL for each new commit.

Install this hook with wget:
wget 'https://gist.githubusercontent.com/alexmchale/9915238/raw/post-commit' -O .git/hooks/post-commit; chmod u+x .git/hooks/post-commit

Install this hook with curl:
curl 'https://gist.githubusercontent.com/alexmchale/9915238/raw/post-commit' > .git/hooks/post-commit; chmod u+x .git/hooks/post-commit

=end

require "shellwords"

revision                  = `git log --pretty=oneline -1 HEAD | cut -d ' ' -f 1`
(_, username, repository) = `git remote -v | grep github.com | head -1`.match(%r|github.com[:/](.*?)/(.*?).git|).to_a
url                       = "https://github.com/#{ username }/#{ repository }/commit/#{ revision }"
escaped_url               = Shellwords.escape(url)

system "echo #{ escaped_url } | /usr/bin/pbcopy general" if File.executable? "/usr/bin/pbcopy"

puts
puts url
puts