capitalize.rb
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capitalize.rb
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	#
	# capitalize.rb
	# Please note: This function is an implementation of a Ruby class and as such may not be entirely UTF8 compatible. To ensure compatibility please use this function with Ruby 2.4.0 or greater - https://bugs.ruby-lang.org/issues/10085.
	#
	module Puppet::Parser::Functions
	newfunction(:capitalize, :type => :rvalue, :doc => <<-DOC
	Capitalizes the first letter of a string or array of strings.
	Requires either a single string or an array as an input.

	Note: from Puppet 6.0.0, the compatible function with the same name in Puppet core
	will be used instead of this function.
	DOC
	) do \|arguments\|

	raise(Puppet::ParseError, "capitalize(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.empty?

	value = arguments[0]

	unless value.is_a?(Array) \|\| value.is_a?(String)
	raise(Puppet::ParseError, 'capitalize(): Requires either array or string to work with')
	end

	result = if value.is_a?(Array)
	# Numbers in Puppet are often string-encoded which is troublesome ...
	value.map { \|i\| i.is_a?(String) ? i.capitalize : i }
	else
	value.capitalize
	end

	return result
	end
	end