This script updates codeversion from AndroidManifest.xml file automatically. Ideal for Travis builds

update_codeversion

# This script updates AndroidManifiest.xml file
# - Updates android:versionCode adding +1 to the version

# Reading arguments
if ARGV.length != 1
	puts 'File as argument required'
	exit
end

# Reading file
fileName = ARGV[0]
if File.exists?(fileName)
	begin
		# Read the file
		manifiest = File.read(fileName)

		# Get the version
		version = /android\:versionCode\=\"([0-9]*)\"/.match(manifiest)
		return unless version
		version_line = version[0]
		version_int = version[1].to_i

		# Getting new version
		new_version_int = version_int + 1
		
		puts("--UPDATING AndroidManifest.xml CODE VERSION--")
		puts("Current version: #{version_int}")
		puts("New version: #{new_version_int}")

		# Replacing
		puts = manifiest.gsub(version_line, "android:versionCode=\"#{new_version_int}\"")
		File.open(fileName, "w") { |file| file << puts }
		puts("--VERSION UPDATED WITHIN AndroidManifest.xml--")
	rescue Exception => e
		puts("Something happened updating version of AndroidManifest.xml: "+e)
	end
end