Class: Cab2xml::Converter

Inherits:
Object
  • Object
show all
Defined in:
lib/cab2xml/converter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Converter

Returns a new instance of Converter.



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# File 'lib/cab2xml/converter.rb', line 7

def initialize
  @attr_mode = :attr
  @token_format = :mecab_unidic
end

Instance Attribute Details

#attr_mode ⇒ Object

Returns the value of attribute attr_mode.



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# File 'lib/cab2xml/converter.rb', line 6

def attr_mode
  @attr_mode
end

#token_format ⇒ Object

Returns the value of attribute token_format.



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# File 'lib/cab2xml/converter.rb', line 6

def token_format
  @token_format
end

Instance Method Details

#add_node(parent, format, data) ⇒ Object 



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# File 'lib/cab2xml/converter.rb', line 36

def add_node(parent, format, data)
  parent << (format % data)
  @last = parent.children.last
  return @last
end

#check_namespace(key) ⇒ Object 



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# File 'lib/cab2xml/converter.rb', line 41

def check_namespace(key)
  return unless key =~ /:/
  namespace, key = key.split(':', 2)
  @namespaces ||= {}
  return if @namespaces[namespace]
  @namespaces[namespace] = true
  @doc.add_namespace namespace, 'http://www.ninjal.ac.jp/corpus_center/bccwj/' + namespace
end

#create_xml(mode) ⇒ Object 



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# File 'lib/cab2xml/converter.rb', line 29

def create_xml(mode)
  # mode = {:corpora|:document}
  @xml = Nokogiri::XML("<#{mode}/>")
  @xml.encoding = 'UTF-8'
  @corpora = @xml.root if mode == :corpora
  @doc = @xml.root if mode == :document
end

#parse(file) ⇒ Object 



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# File 'lib/cab2xml/converter.rb', line 11

def parse(file)
  @xml, @sen, @senid = nil
  file.set_encoding 'UTF-8'
  file.each_line do |line|
    line.chomp!
    case line
    when ''
      # ignore
    when /^##/
      # comment line
    when /^#!/
      parse_extended_tag line
    else
      parse_cabocha_tag line
    end
  end
  return @xml
end

#parse_cabocha_tag(line) ⇒ Object 



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# File 'lib/cab2xml/converter.rb', line 96

def parse_cabocha_tag(line)
  case line
  when /^\*/
    create_xml(:document) unless @xml
    unless @sen
      @sen = add_node(@doc, '<sentence id="%d"/>', @senid ||= 0)
      @senid += 1
      @tokid = 0
    end
    null, id, dep, headfunc, score = line.split(' ')
    link, rel = dep[0..-2], dep[-1]
    head, func = headfunc.split('/')
    data = [id, link, rel, head, func, score]
    format = '<chunk id="%d" link="%d" rel="%s" head="%d" func="%d" score="%s"/>'
    @chunk = add_node(@sen, format, data)
  when 'EOS'
    @sen = nil
  else
    case token_format
    when :chasen
      data = line.split(/\s/)
      data = [@tokid, *data[1..5], data[0]]
      format = '<tok id="%d" read="%s" base="%s" pos="%s" cype="%s" cform="%s">%s</tok>'
      @tok = add_node(@chunk, format, data)
      @tokid += 1
    when :mecab_unidic
      text, data = line.split(/\s/, 2)
      data = data.split(',').map{|item| item == '*' ? nil : item }
      pos = data[0, 4].compact.join('-')
      ctype, cform, lemmaForm, lemma = data[4, 4]
      data = [@tokid, pos, ctype, cform, lemmaForm, lemma, text]
      format = '<tok id="%d" pos="%s" cype="%s" cform="%s" lemmaForm="%s" lemma="%s">%s</tok>'
      @tok = add_node(@chunk, format, data)
      @tokid += 1
    end
  end
end

#parse_extended_tag(line) ⇒ Object 



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# File 'lib/cab2xml/converter.rb', line 49

def parse_extended_tag(line)
  null, label, *data = CSV.parse_line(line, :col_sep => "\s")
  data.map!{|item| item.encode(:xml => :text)}
  case label
  when 'DOCID'
    create_xml(:corpora) unless @xml
    format = '<DOCID id=%d>%s</DOCID>'
    @docid = add_node(@corpora, format, data)
  when 'SENTENCETAGID'
    format = '<SENTENCETAGID id=%d>%s</SENTENCETAGID>'
    @sentencetagid = add_node(@corpora, format, data)
  when 'DOC'
    format = '<document id="%d"/>'
    @doc = add_node(@corpora, format, data)
    @senid = 0
  when 'ATTR'
    case @attr_mode
    when :node
      format = '<ATTR Key="%s" Value="%s"/>'
      @attr = add_node(@last, format, data)
    when :attr
      key, value = data
      check_namespace key
      @last[key] = value
    end
  when 'SEGMENT'
    format = '<SEGMENT TagName="%s" StartGPos="%s" EndGPos="%s" Comments="%s"/>'
    @seg = add_node(@doc, format, data)
  when 'SEGMENT_S'
    format = '<SEGMENT_S TagName="%s" StartLPos="%s" EndLPos="%s" Comments="%s"/>'
    @seg = add_node(@sen, format, data)
  when 'LINK'
    format = '<LINK TagName="%s" FromSegNo="%s" EndSegNo="%s" Comments="%s"/>'
    @link = add_node(@doc, format, data)
  when 'LINK_S'
    format = '<LINK_S TagName="%s" FromSegSNo="%s" EndSegSNo="%s" Comments="%s"/>'
    @link = add_node(@sen, format, data)
  when 'GROUP'
    format = '<GROUP TagName="%s" SegNo="%s" Comments="%s"/>'
    data = [data[0], data[1..-2].join(','), data[-1]]
    @group = add_node(@doc, format, data)
  when 'GROUP_S'
    format = '<GROUP_S TagName="%s" SegSNo="%s" Comments="%s"/>'
    data = [data[0], data[1..-2].join(','), data[-1]]
    @group = add_node(@sen, format, data)
  end
end