2010-07-30 15:05:51 -04:00
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begin
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require 'nokogiri'
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rescue LoadError => e
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$stderr.puts "You don't have nokogiri installed in your application. Please add it to your Gemfile and run bundle install"
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raise e
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end
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2010-03-28 08:15:02 -04:00
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require 'active_support/core_ext/object/blank'
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2010-01-01 06:08:48 -05:00
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# = XmlMini Nokogiri implementation using a SAX-based parser
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module ActiveSupport
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module XmlMini_NokogiriSAX
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extend self
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# Class that will build the hash while the XML document
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# is being parsed using SAX events.
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class HashBuilder < Nokogiri::XML::SAX::Document
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CONTENT_KEY = '__content__'.freeze
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HASH_SIZE_KEY = '__hash_size__'.freeze
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attr_reader :hash
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def current_hash
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@hash_stack.last
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end
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def start_document
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@hash = {}
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@hash_stack = [@hash]
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end
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def end_document
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raise "Parse stack not empty!" if @hash_stack.size > 1
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end
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def error(error_message)
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2010-01-01 07:44:42 -05:00
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raise error_message
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2010-01-01 06:08:48 -05:00
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end
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def start_element(name, attrs = [])
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new_hash = { CONTENT_KEY => '' }
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new_hash[attrs.shift] = attrs.shift while attrs.length > 0
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new_hash[HASH_SIZE_KEY] = new_hash.size + 1
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case current_hash[name]
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when Array then current_hash[name] << new_hash
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when Hash then current_hash[name] = [current_hash[name], new_hash]
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when nil then current_hash[name] = new_hash
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end
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@hash_stack.push(new_hash)
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end
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def end_element(name)
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if current_hash.length > current_hash.delete(HASH_SIZE_KEY) && current_hash[CONTENT_KEY].blank? || current_hash[CONTENT_KEY] == ''
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current_hash.delete(CONTENT_KEY)
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end
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@hash_stack.pop
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end
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def characters(string)
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current_hash[CONTENT_KEY] << string
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end
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alias_method :cdata_block, :characters
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end
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attr_accessor :document_class
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self.document_class = HashBuilder
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def parse(data)
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if !data.respond_to?(:read)
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data = StringIO.new(data || '')
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end
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char = data.getc
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if char.nil?
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{}
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else
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data.ungetc(char)
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document = self.document_class.new
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parser = Nokogiri::XML::SAX::Parser.new(document)
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parser.parse(data)
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document.hash
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end
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end
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end
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2010-07-30 15:05:51 -04:00
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end
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