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# frozen_string_literal: true
#
# swapcase.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(:swapcase, type: :rvalue, doc: <<-DOC
@summary
This function will swap the existing case of a string.
@return
string with uppercase alphabetic characters converted to lowercase and lowercase characters converted to uppercase
@example **Usage**
swapcase("aBcD")
Would result in: "AbCd"
DOC
) do |arguments|
raise(Puppet::ParseError, "swapcase(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.empty?
value = arguments[0]
raise(Puppet::ParseError, 'swapcase(): Requires either array or string to work with') unless value.is_a?(Array) || value.is_a?(String)
result = if value.is_a?(Array)
# Numbers in Puppet are often string-encoded which is troublesome ...
value.map { |i| i.is_a?(String) ? i.swapcase : i }
else
value.swapcase
end
return result
end
end
# vim: set ts=2 sw=2 et :
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