class Opto::Resolvers::Env
Find a value using Environment.
Hint should be a name of environment variable, such as 'HOME'
Numbers will be converted to fixnums, “true” and “false” will be converted to booleans.
Public Instance Methods
resolve()
click to toggle source
# File lib/opto/resolvers/environment_variable.rb, line 10 def resolve raise ArgumentError, "Environment variable name not set" if hint.nil? Array(hint).each do |hint| val = ENV[hint.to_s] val = case val when NilClass then nil when /\A\d+\z/ then val.to_i when /\Atrue\z/ then true when /\Afalse\z/ then false when /\A(?:null|nil)\z/ then nil else val end return val unless val.nil? end nil end