Puppet Function: capitalize

Defined in:
modules/stdlib/lib/puppet/parser/functions/capitalize.rb
Function type:
Ruby 3.x API

Overview

capitalize()Any

Capitalizes the first letter of a string or array of strings. Requires either a single string or an array as an input.

Returns:

  • (Any)


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# File 'modules/stdlib/lib/puppet/parser/functions/capitalize.rb', line 6

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.
  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