diff options
Diffstat (limited to 'activesupport/lib/active_support/xml_mini.rb')
| -rw-r--r-- | activesupport/lib/active_support/xml_mini.rb | 126 |
1 files changed, 23 insertions, 103 deletions
diff --git a/activesupport/lib/active_support/xml_mini.rb b/activesupport/lib/active_support/xml_mini.rb index bfc3d7b00b..ccd1349491 100644 --- a/activesupport/lib/active_support/xml_mini.rb +++ b/activesupport/lib/active_support/xml_mini.rb @@ -1,111 +1,31 @@ -# = XmlMini -# This is a derivitive work of XmlSimple 1.0.11 -# Author:: Joseph Holsten <joseph@josephholsten.com> -# Copyright:: Copyright (c) 2008 Joseph Holsten -# Copyright:: Copyright (c) 2003-2006 Maik Schmidt <contact@maik-schmidt.de> -# License:: Distributes under the same terms as Ruby. -module XmlMini - extend self - - CONTENT_KEY = '__content__'.freeze - - # Parse an XML Document string into a simple hash - # - # Same as XmlSimple::xml_in but doesn't shoot itself in the foot, - # and uses the defaults from ActiveSupport +module ActiveSupport + # = XmlMini # - # string:: - # XML Document string to parse - def parse(string) - require 'rexml/document' unless defined?(REXML::Document) - doc = REXML::Document.new(string) - merge_element!({}, doc.root) - end - - private - # Convert an XML element and merge into the hash - # - # hash:: - # Hash to merge the converted element into. - # element:: - # XML element to merge into hash - def merge_element!(hash, element) - merge!(hash, element.name, collapse(element)) - end - - # Actually converts an XML document element into a data structure. - # - # element:: - # The document element to be collapsed. - def collapse(element) - hash = get_attributes(element) - - if element.has_elements? - element.each_element {|child| merge_element!(hash, child) } - merge_texts!(hash, element) unless empty_content?(element) - hash - else - merge_texts!(hash, element) - end - end - - # Merge all the texts of an element into the hash - # - # hash:: - # Hash to add the converted emement to. - # element:: - # XML element whose texts are to me merged into the hash - def merge_texts!(hash, element) - unless element.has_text? - hash + # To use the much faster libxml parser: + # gem 'libxml-ruby', '=0.9.7' + # XmlMini.backend = 'LibXML' + module XmlMini + extend self + + attr_reader :backend + delegate :parse, :to => :backend + + def backend=(name) + if name.is_a?(Module) + @backend = name else - # must use value to prevent double-escaping - merge!(hash, CONTENT_KEY, element.texts.sum(&:value)) + require "active_support/xml_mini/#{name.to_s.downcase}.rb" + @backend = ActiveSupport.const_get("XmlMini_#{name}") end end - # Adds a new key/value pair to an existing Hash. If the key to be added - # already exists and the existing value associated with key is not - # an Array, it will be wrapped in an Array. Then the new value is - # appended to that Array. - # - # hash:: - # Hash to add key/value pair to. - # key:: - # Key to be added. - # value:: - # Value to be associated with key. - def merge!(hash, key, value) - if hash.has_key?(key) - if hash[key].instance_of?(Array) - hash[key] << value - else - hash[key] = [hash[key], value] - end - elsif value.instance_of?(Array) - hash[key] = [value] - else - hash[key] = value - end - hash - end - - # Converts the attributes array of an XML element into a hash. - # Returns an empty Hash if node has no attributes. - # - # element:: - # XML element to extract attributes from. - def get_attributes(element) - attributes = {} - element.attributes.each { |n,v| attributes[n] = v } - attributes + def with_backend(name) + old_backend, self.backend = backend, name + yield + ensure + self.backend = old_backend end + end - # Determines if a document element has text content - # - # element:: - # XML element to be checked. - def empty_content?(element) - element.texts.join.blank? - end + XmlMini.backend = 'REXML' end |