Xcode 4: Update CFBundleVersion on each build using Git repo commit version

Question

I\'m using Xcode 4 in combination with Git and would like to increment the CFBundleVersion in Info.plist on each build. The value for the key CFBundleVersion should be updat

Answer 1

The version string needs to be of the format [xx].[yy].[zz] where x, y, z are numbers.

I deal with this by using git tag to give specific commits meaningful tag numbers for x and y (eg 0.4), and then via a script build phase, z gets the number of commits since the last tag, as returned by git describe.

Here's the script, which I adapted from this one. It can be added straight to the target as a build phase (shell is /usr/bin/env ruby):

# add git tag + version number to Info.plist
version = `/usr/bin/env git describe`.chomp

puts "raw version "+version
version_fancy_re = /(\d*\.\d*)-?(\d*)-?/
version =~ version_fancy_re
commit_num = $2
if ( $2.empty? )
commit_num = "0"
end
fancy_version = ""+$1+"."+commit_num
puts "compatible: "+fancy_version

# backup
source_plist_path = File.join(ENV['PROJECT_DIR'], ENV['INFOPLIST_FILE'])
orig_plist = File.open( source_plist_path, "r").read;
File.open( source_plist_path+".bak", "w") { |file| file.write(orig_plist) }

# put in CFBundleVersion key
version_re = /([\t ]+CFBundleVersion<\/key>\n[\t ]+).*?(<\/string>)/
orig_plist =~ version_re
bundle_version_string = $1 + fancy_version + $2
orig_plist.gsub!(version_re, bundle_version_string)

# put in CFBundleShortVersionString key
version_re = /([\t ]+CFBundleShortVersionString<\/key>\n[\t ]+).*?(<\/string>)/
orig_plist =~ version_re
bundle_version_string = $1 + fancy_version + $2
orig_plist.gsub!(version_re, bundle_version_string)

# write
File.open(source_plist_path, "w") { |file| file.write(orig_plist) }
puts "Set version string to '#{fancy_version}'"