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# frozen_string_literal: true
begin
require "nokogiri"
rescue LoadError => e
$stderr.puts "You don't have nokogiri installed in your application. Please add it to your Gemfile and run bundle install"
raise e
end
require "active_support/core_ext/object/blank"
require "stringio"
module ActiveSupport
module XmlMini_NokogiriSAX #:nodoc:
extend self
# Class that will build the hash while the XML document
# is being parsed using SAX events.
class HashBuilder < Nokogiri::XML::SAX::Document
CONTENT_KEY = "__content__".freeze
HASH_SIZE_KEY = "__hash_size__".freeze
attr_reader :hash
def current_hash
@hash_stack.last
end
def start_document
@hash = {}
@hash_stack = [@hash]
end
def end_document
raise "Parse stack not empty!" if @hash_stack.size > 1
end
def error(error_message)
raise error_message
end
def start_element(name, attrs = [])
new_hash = { CONTENT_KEY => "".dup }.merge!(Hash[attrs])
new_hash[HASH_SIZE_KEY] = new_hash.size + 1
case current_hash[name]
when Array then current_hash[name] << new_hash
when Hash then current_hash[name] = [current_hash[name], new_hash]
when nil then current_hash[name] = new_hash
end
@hash_stack.push(new_hash)
end
def end_element(name)
if current_hash.length > current_hash.delete(HASH_SIZE_KEY) && current_hash[CONTENT_KEY].blank? || current_hash[CONTENT_KEY] == ""
current_hash.delete(CONTENT_KEY)
end
@hash_stack.pop
end
def characters(string)
current_hash[CONTENT_KEY] << string
end
alias_method :cdata_block, :characters
end
attr_accessor :document_class
self.document_class = HashBuilder
def parse(data)
if !data.respond_to?(:read)
data = StringIO.new(data || "")
end
if data.eof?
{}
else
document = document_class.new
parser = Nokogiri::XML::SAX::Parser.new(document)
parser.parse(data)
document.hash
end
end
end
end
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