Module: Magellan::Gcs::Proxy::ExpandVariable

Defined in:
lib/magellan/gcs/proxy/expand_variable.rb

Defined Under Namespace

Classes: InvalidReferenceError

Class Method Summary collapse

Class Method Details

.dig_variable(tmp, v, variable_ref) ⇒ Object

Raises:



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# File 'lib/magellan/gcs/proxy/expand_variable.rb', line 19

def dig_variable(tmp, v, variable_ref)
  case v
  when String
    if tmp.respond_to?(:[]) && tmp.respond_to?(:include?)
      return tmp[v] if tmp.include?(v)
    end
  when Integer
    case tmp
    when Array
      return tmp[v] if tmp.size > v
    end
  end
  raise InvalidReferenceError, variable_ref
end

.dig_variables(variable_ref, data) ⇒ Object 



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# File 'lib/magellan/gcs/proxy/expand_variable.rb', line 12

def dig_variables(variable_ref, data)
  vars = variable_ref.split('.').map { |i| /\A\d+\z/ =~ i ? i.to_i : i }
  vars.inject(data) do |tmp, v|
    dig_variable(tmp, v, variable_ref)
  end
end

.expand_variables(str, data, quote_string: false) ⇒ Object 



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# File 'lib/magellan/gcs/proxy/expand_variable.rb', line 34

def expand_variables(str, data, quote_string: false)
  data ||= {}
  str.gsub(/\%\{\s*([\w.]+)\s*\}/) do |_m|
    var = Regexp.last_match(1)
    value =
      begin
        dig_variables(var, data)
      rescue InvalidReferenceError
        ''
      end

    case value
    when String then quote_string ? value.to_s : value
    when Array, Hash then flatten(value).join(' ')
    else value.to_s
    end
  end
end

.flatten(obj) ⇒ Object 



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# File 'lib/magellan/gcs/proxy/expand_variable.rb', line 53

def flatten(obj)
  case obj
  when Array then obj.map { |i| flatten(i) }
  when Hash then flatten(obj.values)
  else obj
  end
end