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require "time"
require "base64"
require "bigdecimal"
require "active_support/core_ext/module/delegation"
require "active_support/core_ext/string/inflections"
require "active_support/core_ext/date_time/calculations"
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 <tt>original_filename</tt> and <tt>content_type</tt> 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)
unless defined?(TYPE_NAMES)
TYPE_NAMES = {
"Symbol" => "symbol",
"Integer" => "integer",
"BigDecimal" => "decimal",
"Float" => "float",
"TrueClass" => "boolean",
"FalseClass" => "boolean",
"Date" => "date",
"DateTime" => "dateTime",
"Time" => "dateTime",
"Array" => "array",
"Hash" => "hash"
}
# No need to map these on Ruby 2.4+
TYPE_NAMES["Fixnum"] = "integer" unless 0.class == Integer
TYPE_NAMES["Bignum"] = "integer" unless 0.class == Integer
end
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_s.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.to_s.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_accessor :depth
self.depth = 100
delegate :parse, to: :backend
def backend
current_thread_backend || @backend
end
def backend=(name)
backend = name && cast_backend_name_to_module(name)
self.current_thread_backend = backend if current_thread_backend
@backend = backend
end
def with_backend(name)
old_backend = current_thread_backend
self.current_thread_backend = name && cast_backend_name_to_module(name)
yield
ensure
self.current_thread_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
type_name = "dateTime" if type_name == "datetime"
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
private
def current_thread_backend
Thread.current[:xml_mini_backend]
end
def current_thread_backend=(name)
Thread.current[:xml_mini_backend] = name && cast_backend_name_to_module(name)
end
def cast_backend_name_to_module(name)
if name.is_a?(Module)
name
else
require "active_support/xml_mini/#{name.downcase}"
ActiveSupport.const_get("XmlMini_#{name}")
end
end
end
XmlMini.backend = "REXML"
end
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