Automated Xcode build script to update CFBundleVersion, commit and tag with Git.

ALBUpdateBundleVersion.py

#!/usr/bin python

from AppKit import NSMutableDictionary
import os

# Get the name of the current configuration.
configuration = os.environ['CONFIGURATION']
# List of valid configurations where this script should run.
configurations_list = ['Beta', 'App Store']

if configuration in configurations_list:
    # Get the name of the info.plist file.
    infoplist_file = os.environ['INFOPLIST_FILE']

    # Load it into a mutable dictionary and update it.
    info_dictionary = NSMutableDictionary.dictionaryWithContentsOfFile_(infoplist_file)
    bundle_version = int(info_dictionary['CFBundleVersion']) + 1
    version_string = str(bundle_version)
    info_dictionary['CFBundleVersion'] = version_string

    # Write back the updated file.
    info_dictionary.writeToFile_atomically_(infoplist_file, True)

    # Commit the current build using Git.
    os.system('git commit -am "Automated Commit For Build ' + version_string + '. Configuration: ' + configuration + '."')

    # Tag the build with the configuration name and build number.
    # Format the configuration name to replace characters that will cause tagging to fail.
    formatted_configuration = configuration.replace(' ', '').replace('-', '')
    os.system('git tag ' + formatted_configuration + '_' + version_string)