Class: ActiveSupport::XmlMini_LibXMLSAX::HashBuilder

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain: self, LibXML::XML::SaxParser::Callbacks
Inherits:	Object
Defined in:	activesupport/lib/active_support/xml_mini/libxmlsax.rb

Overview

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

Constant Summary

CONTENT_KEY =
# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 15
```
'__content__'.freeze
```
HASH_SIZE_KEY =
# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 16
```
'__hash_size__'.freeze
```

Instance Attribute Summary

#hash readonly

Instance Method Summary

#current_hash
#on_cdata_block(string)

Alias for #on_characters.
#on_characters(string) (also: #on_cdata_block)
#on_end_document
#on_end_element(name)
#on_start_document
#on_start_element(name, attrs = {})

Instance Attribute Details

#hash (readonly)

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 18


attr_reader :hash

Instance Method Details

#current_hash

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 20


def current_hash
  @hash_stack.last
end

#on_cdata_block(string)

Alias for #on_characters.

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 58


alias_method :on_cdata_block, :on_characters

#on_characters(string) Also known as: #on_cdata_block

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 54


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

#on_end_document

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 29


def on_end_document
  @hash = @hash_stack.pop
  @hash.delete(CONTENT_KEY)
end

#on_end_element(name)

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 47


def on_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

#on_start_document

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 24


def on_start_document
  @hash = { CONTENT_KEY => '' }
  @hash_stack = [@hash]
end

#on_start_element(name, attrs = {})

[ GitHub ]

# File 'activesupport/lib/active_support/xml_mini/libxmlsax.rb', line 34


def on_start_element(name, attrs = {})
  new_hash = { CONTENT_KEY => '' }.merge!(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