Run script for Xcode to run after build / archive - updates CFBundleVersion in Info.plist file with short git commit hash

xcode-git-commit-hash-cfbundleversion.rb

#!/usr/bin/ruby
# xcode-git-commit-hash-cfbundleversion.rb
# Run script for Xcode to run after build / archive 
# Updates CFBundleVersion in Info.plist file with short git commit hash
#
# This is based on
# http://github.com/guicocoa/xcode-git-cfbundleversion/
# http://github.com/digdog/xcode-git-cfbundleversion/
# http://github.com/jsallis/xcode-git-versioner
# http://github.com/juretta/iphone-project-tools/tree/v1.0.3

require 'rubygems'
    begin
        require 'Plist'
        rescue LoadError => e
        puts "You need to install the 'Plist' gem: [sudo] gem install plist"
    exit 1
end

raise "Must be run from Xcode" unless ENV['XCODE_VERSION_ACTUAL']

GIT = "/usr/bin/env git"
PRODUCT_PLIST = File.join(ENV['BUILT_PRODUCTS_DIR'], ENV['INFOPLIST_PATH'])
HASH = `#{GIT} log -1 --pretty=format:%h`
BUNDLE_VERSION = "CFBundleVersion"

if File.file?(PRODUCT_PLIST) and HASH

    # update product plist
    `/usr/bin/plutil -convert xml1 \"#{PRODUCT_PLIST}\"`
    info = Plist::parse_xml(PRODUCT_PLIST)
    if info
        info[BUNDLE_VERSION] = HASH
        info["GCGitCommitHash"] = HASH
        info.save_plist(PRODUCT_PLIST)
    end
    `/usr/bin/plutil -convert binary1 \"#{PRODUCT_PLIST}\"`

    # log
    puts "updated #{BUNDLE_VERSION} to #{HASH}"
    puts "HEAD: #{HASH}"
end