Ruby Git post-receive hook to parse out the stdin and assign them to variables

post-receive.rb

#!/usr/bin/env ruby

# figure out which repository this is
# assumes it's a bare repository
repository = /([^\/]*?)\.git$/.match(`pwd`.chomp)[1]

# get the stdins from git
stdins = []; stdins << $_ while gets

stdins.each do |str|
  # parse the stdin string
  arr = str.split
  refs = arr[2].split('/')
  
  # what we're really after
  oldrev   = arr[0] # SHA
  newrev   = arr[1] # SHA
  ref_type = refs[1] # tags || heads (branch)
  ref_name = refs[2] # develop, 1.4 etc.
  
  # now do whatcha gotta do
end

If anybody can think of better variable names for ref_type and ref_name, please suggest!

refs/heads/master
refs/tags/1.0

Need a name that describes both heads and tags, and a name that describes both master and 1.0

The default separator for String#split is $, which is set to ' ', so "oh hi thar".split and "oh hi thar".split(' ') gives the same result.

Cool, thanks. Not the case with JavaScript, my native tongue.

Thanks for this! It helped me create an integration with Pivotal Tracker: https://gist.github.com/895521