A git command to open remotes and branches in a browser

git-open

#! /usr/bin/env ruby
# If the remote repository is hosted on GitHub.com (or GitHub Enterprise) this
# git command will allow you to open your browser to the specified branch on a
# given remote.
#
# For example:
#   Given the remote: 
#   origin  [email protected]:ubermajestix/some_app.git
#   
#   Running: 
#   git open master feature/awesomeness
#   
#   Opens http://github.com/ubermajestix/some_app/tree/feature/awesomeness
#
# For bash completion of remotes and branch names, copy the code below into
# git-completion.bash, my copy lives at:
# /usr/local/Cellar/git/1.7.10.2/etc/bash_completion.d/git-completion.bash
# _git_open(){
#  if [ $cword = 2 ]; then
#    __gitcomp_nl "$(__git_remotes)" && return
#  else
#    __gitcomp_nl "$(__git_heads)" && return
#  fi
# }

target_repo = ARGV.shift
target_branch = ARGV.shift

repos = `git remote -v`.split("\n").map{|r| r.split[0,2] }.uniq
repo = repos.detect{|r| r.first == target_repo }.last
url = repo.gsub(/git@/,'').gsub(':', '/').gsub('.git','')

if target_branch
  remote_branches = `git branch -v -r | cut -d " " -f3`.split
  if remote_branches.include?("#{target_repo}/#{target_branch}")
    url << "/tree/#{target_branch}"
  else
    puts "Branch #{target_branch} does not exist on the remote repo #{target_repo}"
  end
end
`open "http://#{url}"`