require 'time' require 'active_support/base64' require 'active_support/core_ext/module/delegation' require 'active_support/core_ext/string/inflections' module ActiveSupport # = XmlMini # # To use the much faster libxml parser: # gem 'libxml-ruby', '=0.9.7' # XmlMini.backend = 'LibXML' module XmlMini extend self # This module decorates files deserialized using Hash.from_xml with # the original_filename and content_type methods. module FileLike #:nodoc: attr_writer :original_filename, :content_type def original_filename @original_filename || 'untitled' end def content_type @content_type || 'application/octet-stream' end end DEFAULT_ENCODINGS = { "binary" => "base64" } unless defined?(DEFAULT_ENCODINGS) TYPE_NAMES = { "Symbol" => "symbol", "Fixnum" => "integer", "Bignum" => "integer", "BigDecimal" => "decimal", "Float" => "float", "TrueClass" => "boolean", "FalseClass" => "boolean", "Date" => "date", "DateTime" => "datetime", "Time" => "datetime", "Array" => "array", "Hash" => "hash" } unless defined?(TYPE_NAMES) FORMATTING = { "symbol" => Proc.new { |symbol| symbol.to_s }, "date" => Proc.new { |date| date.to_s(:db) }, "datetime" => Proc.new { |time| time.xmlschema }, "binary" => Proc.new { |binary| ::Base64.encode64(binary) }, "yaml" => Proc.new { |yaml| yaml.to_yaml } } unless defined?(FORMATTING) # TODO use regexp instead of Date.parse unless defined?(PARSING) PARSING = { "symbol" => Proc.new { |symbol| symbol.to_sym }, "date" => Proc.new { |date| ::Date.parse(date) }, "datetime" => Proc.new { |time| Time.xmlschema(time).utc rescue ::DateTime.parse(time).utc }, "integer" => Proc.new { |integer| integer.to_i }, "float" => Proc.new { |float| float.to_f }, "decimal" => Proc.new { |number| BigDecimal(number) }, "boolean" => Proc.new { |boolean| %w(1 true).include?(boolean.strip) }, "string" => Proc.new { |string| string.to_s }, "yaml" => Proc.new { |yaml| YAML::load(yaml) rescue yaml }, "base64Binary" => Proc.new { |bin| ::Base64.decode64(bin) }, "binary" => Proc.new { |bin, entity| _parse_binary(bin, entity) }, "file" => Proc.new { |file, entity| _parse_file(file, entity) } } PARSING.update( "double" => PARSING["float"], "dateTime" => PARSING["datetime"] ) end attr_reader :backend delegate :parse, :to => :backend def backend=(name) if name.is_a?(Module) @backend = name else require "active_support/xml_mini/#{name.to_s.downcase}" @backend = ActiveSupport.const_get("XmlMini_#{name}") end end def with_backend(name) old_backend, self.backend = backend, name yield ensure self.backend = old_backend end def to_tag(key, value, options) type_name = options.delete(:type) merged_options = options.merge(:root => key, :skip_instruct => true) if value.is_a?(::Method) || value.is_a?(::Proc) if value.arity == 1 value.call(merged_options) else value.call(merged_options, key.to_s.singularize) end elsif value.respond_to?(:to_xml) value.to_xml(merged_options) else type_name ||= TYPE_NAMES[value.class.name] type_name ||= value.class.name if value && !value.respond_to?(:to_str) type_name = type_name.to_s if type_name key = rename_key(key.to_s, options) attributes = options[:skip_types] || type_name.nil? ? { } : { :type => type_name } attributes[:nil] = true if value.nil? encoding = options[:encoding] || DEFAULT_ENCODINGS[type_name] attributes[:encoding] = encoding if encoding formatted_value = FORMATTING[type_name] && !value.nil? ? FORMATTING[type_name].call(value) : value options[:builder].tag!(key, formatted_value, attributes) end end def rename_key(key, options = {}) camelize = options[:camelize] dasherize = !options.has_key?(:dasherize) || options[:dasherize] if camelize key = true == camelize ? key.camelize : key.camelize(camelize) end key = _dasherize(key) if dasherize key end protected def _dasherize(key) # $2 must be a non-greedy regex for this to work left, middle, right = /\A(_*)(.*?)(_*)\Z/.match(key.strip)[1,3] "#{left}#{middle.tr('_ ', '--')}#{right}" end # TODO: Add support for other encodings def _parse_binary(bin, entity) #:nodoc: case entity['encoding'] when 'base64' ::Base64.decode64(bin) else bin end end def _parse_file(file, entity) f = StringIO.new(::Base64.decode64(file)) f.extend(FileLike) f.original_filename = entity['name'] f.content_type = entity['content_type'] f end end XmlMini.backend = 'REXML' end