Contents

require "date"

module Picasa
  module Utils
    def safe_retrieve(hash, *keys)
      return if !hash.kind_of?(Hash) || !hash.has_key?(keys.first)

      if keys.size == 1
        hash[keys.first]
      elsif keys.size > 1
        Utils.safe_retrieve(hash[keys.first], *keys[1..-1])
      end
    end

    # Ported from ActiveSupport
    def array_wrap(object)
      if object.nil?
        []
      elsif object.respond_to?(:to_ary)
        object.to_ary || [object]
      else
        [object]
      end
    end

    def map_to_integer(value)
      value && value.to_i
    end

    def map_to_date(value)
      value && DateTime.parse(value)
    end

    def map_to_boolean(value)
      return unless value
      case value
        when "true"  then true
        when "false" then false
      end
    end

    module_function :safe_retrieve, :array_wrap, :map_to_integer, :map_to_boolean, :map_to_date
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
picasa-0.4.2	lib/picasa/utils.rb
picasa-0.4.1	lib/picasa/utils.rb
picasa-0.4.0	lib/picasa/utils.rb