Class: ActiveSupport::XmlMini_NokogiriSAX::HashBuilder

Inherits:
Nokogiri::XML::SAX::Document
  • Object
show all
Defined in:
lib/active_support/xml_mini/nokogirisax.rb

Overview

Class that will build the hash while the XML document is being parsed using SAX events.

Constant Summary collapse

CONTENT_KEY = 
"__content__".freeze
HASH_SIZE_KEY = 
"__hash_size__".freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#hash ⇒ Object (readonly)

Returns the value of attribute hash.



20
21
22
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 20

def hash
  @hash
end

Instance Method Details

#characters(string) ⇒ Object Also known as: cdata_block 



59
60
61
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 59

def characters(string)
  current_hash[CONTENT_KEY] << string
end

#current_hash ⇒ Object 



22
23
24
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 22

def current_hash
  @hash_stack.last
end

#end_document ⇒ Object 



31
32
33
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 31

def end_document
  raise "Parse stack not empty!" if @hash_stack.size > 1
end

#end_element(name) ⇒ Object 



52
53
54
55
56
57
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 52

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

#error(error_message) ⇒ Object 



35
36
37
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 35

def error(error_message)
  raise error_message
end

#start_document ⇒ Object 



26
27
28
29
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 26

def start_document
  @hash = {}
  @hash_stack = [@hash]
end

#start_element(name, attrs = []) ⇒ Object 



39
40
41
42
43
44
45
46
47
48
49
50
 
# File 'lib/active_support/xml_mini/nokogirisax.rb', line 39

def start_element(name, attrs = [])
  new_hash = { CONTENT_KEY => "" }.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