Class: Metacrunch::Marcxml::Parser

Inherits:
Ox::Sax
  • Object
show all
Defined in:
lib/metacrunch/marcxml/parser.rb

Defined Under Namespace

Classes: ParsingDone

Instance Method Summary collapse

Instance Method Details

#attr(name, value) ⇒ Object 



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# File 'lib/metacrunch/marcxml/parser.rb', line 53

def attr(name, value)
  element_name, element_data = @stack[-1]
  parent_name, parent_data   = @stack[-2]

  if element_name == :controlfield && parent_name == :record
    element_data[:controlfield].tag = value if name == :tag
  elsif element_name == :datafield && parent_name == :record
    element_data[:datafield].tag  = value if name == :tag
    element_data[:datafield].ind1 = value if name == :ind1
    element_data[:datafield].ind2 = value if name == :ind2
  elsif element_name == :subfield && parent_name == :datafield
    element_data[:subfield].code = value if name == :code
  end
end

#end_element(name) ⇒ Object 



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# File 'lib/metacrunch/marcxml/parser.rb', line 35

def end_element(name)
  element_name, element_data = @stack[-1]
  parent_name, parent_data   = @stack[-2]

  if element_name == :record
    @documents << element_data[:document] unless element_data[:document].empty?
    raise ParsingDone unless @collection_mode
  elsif element_name == :controlfield && parent_name == :record
    parent_data[:document].add_controlfield(element_data[:controlfield])
  elsif element_name == :datafield && parent_name == :record
    parent_data[:document].add_datafield(element_data[:datafield])
  elsif element_name == :subfield && parent_name == :datafield
    parent_data[:datafield].add_subfield(element_data[:subfield])
  end

  @stack.pop
end

#parse(marc_xml, collection_mode: false) ⇒ Object 



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# File 'lib/metacrunch/marcxml/parser.rb', line 6

def parse(marc_xml, collection_mode: false)
  @stack     = []
  @documents = []
  @collection_mode = collection_mode

  begin
    Ox.sax_parse(self, marc_xml, convert_special: true)
  rescue ParsingDone ; end

  collection_mode ? @documents : @documents.first
end

#start_element(name) ⇒ Object 



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# File 'lib/metacrunch/marcxml/parser.rb', line 18

def start_element(name)
  @stack << [name, {}]

  element_name, element_data = @stack[-1]
  parent_name, parent_data   = @stack[-2]

  if element_name == :record
    element_data[:document] = Document.new
  elsif element_name == :controlfield && parent_name == :record
    element_data[:controlfield] = Document::Controlfield.new
  elsif element_name == :datafield && parent_name == :record
    element_data[:datafield] = Document::Datafield.new
  elsif element_name == :subfield && parent_name == :datafield
    element_data[:subfield] = Document::Subfield.new
  end
end

#text(value) ⇒ Object 



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# File 'lib/metacrunch/marcxml/parser.rb', line 68

def text(value)
  element_name, element_data = @stack[-1]
  parent_name, parent_data   = @stack[-2]

  if element_name == :controlfield && parent_name == :record
    element_data[:controlfield].value = value
  elsif element_name == :subfield && parent_name == :datafield
    element_data[:subfield].value = value
  end
end