Class: Vidar::Interpolation

Inherits:
Object
  • Object
show all
Defined in:
lib/vidar/interpolation.rb

Constant Summary collapse

INTERPOLATION_PATTERN = 
/\{\{(\w+)\}\}/

Class Method Summary collapse

Class Method Details

.call(string, getter) ⇒ Object 



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# File 'lib/vidar/interpolation.rb', line 6

def call(string, getter)
  return unless string
  fail ArgumentError, "getter must respond_to get." unless getter.respond_to?(:get)

  string.gsub(INTERPOLATION_PATTERN) do |match|
    getter.get($1) || ENV[$1] || match # rubocop:disable Style/PerlBackrefs
  end
end