Bump CFBundleVersion in a .plist file

gistfile1.rb

#
# Copyright (c) 2009 Ben Reubenstein <benr@x-cr.com>
# 
# Description: 
# This script is designed to auto increment PList CFBundleVersion versions.
# It supports incrementing version in a three part format:
# 
# 100.99.3
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in the
# Software without restriction, including without limitation the rights to use,
# copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

class Version
  
  def self.up(version_string)
    version_values = version_string.split('.')    
    version_values.reverse!
    version_values.each_with_index do |v, x|
      if v.to_i == 99 && x != 2
        version_values[x] = 0
      else
        if v.to_i < 99 && x != 2
          version_values[x] = v.to_i + 1
          break
        else
          version_values[x] = v.to_i + 1
        end
      end
    end
    version_values.reverse!
    new_version = ""
    version_values.each do |v|
      new_version = new_version + v.to_s + '.'
    end
    new_version.chop
  end
  
end

require 'rubygems'
require 'plist'

unless ARGV[0].nil?
  result = Plist::parse_xml(ARGV[0])
  unless result['CFBundleVersion'].nil?
    puts "Bundle Version Bumping #{result['CFBundleVersion']}"
    result['CFBundleVersion'] = Version.up(result['CFBundleVersion'])    
    result.save_plist(ARGV[0])    
    puts "Bundle Version Bumped  #{result['CFBundleVersion']}"    
  else
    puts "No CFBundleVersion found in #{ARGV[0]}"
  end
else
  puts 'usage: bundle_bump.rb some.plist'
  puts 'plist must contain a CFBundleVersion key value pair in the format x.x.x'
end