Class: Anystyle::Parser::Normalizer

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/anystyle/parser/normalizer.rb

Constant Summary collapse

MONTH = 
Hash.new do |h,k|
  case k
  when /jan/i
    h[k] = 1
  when /feb/i
    h[k] = 2
  when /mar/i
    h[k] = 3
  when /apr/i
    h[k] = 4
  when /ma[yi]/i
    h[k] = 5
  when /jun/i
    h[k] = 6
  when /jul/i
    h[k] = 7
  when /aug/i
    h[k] = 8
  when /sep/i
    h[k] = 9
  when /o[ck]t/i
    h[k] = 10
  when /nov/i
    h[k] = 11
  when /dec/i
    h[k] = 12
  else
    h[k] = nil
  end
end

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *arguments, &block) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 41

def method_missing(name, *arguments, &block)
  case name.to_s
  when /^normalize_(.+)$/
    normalize($1.to_sym, *arguments, &block)
  else
    super
  end
end

Instance Method Details

#extract_edition(token, hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 221

def extract_edition(token, hash)
  edition = [hash[:edition]].flatten.compact

  if token.gsub!(/[^[:alnum:]]*(\d+)(?:st|nd|rd|th)?\s*(?:Aufl(?:age|\.)|ed(?:ition|\.)?)[^[:alnum:]]*/i, '')
    edition << $1
  end

  if token.gsub!(/(?:\band)?[^[:alnum:]]*([Ee]xpanded)[^[:alnum:]]*$/, '')
    edition << $1
  end

  if token.gsub!(/(?:\band)?[^[:alnum:]]*([Ii]llustrated)[^[:alnum:]]*$/, '')
    edition << $1
  end

  if token.gsub!(/(?:\band)?[^[:alnum:]]*([Rr]evised)[^[:alnum:]]*$/, '')
    edition << $1
  end

  if token.gsub!(/(?:\band)?[^[:alnum:]]*([Rr]eprint)[^[:alnum:]]*$/, '')
    edition << $1
  end

  hash[:edition] = edition.join(', ') unless edition.empty?
end

#normalize(key, hash) ⇒ Object

Default normalizer. Strips punctuation.



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# File 'lib/anystyle/parser/normalizer.rb', line 51

def normalize(key, hash)
  token, *dangling =  hash[key]
  unmatched(key, hash, dangling) unless dangling.empty?

  token.gsub!(/^[^[:alnum:]]+|[^[:alnum:]]+$/, '')

  hash[key] = token
  hash
end

#normalize_accessed(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 61

def normalize_accessed(hash)
  token, *dangling =  hash[:accessed]
  unmatched(:accessed, hash, dangling) unless dangling.empty?

  token.gsub!(/(accessed|retrieved):?\s*/i, '')

  hash[:accessed] = token
  hash
end

#normalize_author(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 90

def normalize_author(hash)
  authors, *dangling = hash[:author]
  unmatched(:author, hash, dangling) unless dangling.empty?

  if authors =~ /\b[Ee]d((s|itors?|ited)\b|\.)/ && !hash.has_key?(:editor)
    hash[:editor] = hash.delete(:author)
    hash = normalize_editor(hash)
  else
    hash[:'more-authors'] = true if strip_et_al(authors)
    authors.gsub!(/^[^[:alnum:]]+|[^[:alnum:]]+$/, '')
    hash[:author] = normalize_names(authors)
  end

  hash
end

#normalize_booktitle(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 247

def normalize_booktitle(hash)
  booktitle, *dangling = hash[:booktitle]
  unmatched(:booktitle, hash, dangling) unless dangling.empty?

  booktitle.gsub!(/^in:\s+/i, '')
  booktitle.gsub!(/^In\s+/i, '')

  extract_edition(booktitle, hash)

  booktitle.gsub!(/^\s+|[\.,:;\s]+$/, '')
  hash[:booktitle] = booktitle

  hash
end

#normalize_citation_number(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 82

def normalize_citation_number(hash)
  token, *dangling =  hash[:citation_number]
  unmatched(:citation_number, hash, dangling) unless dangling.empty?

  hash[:citation_number] = token[/\d[\w,.-]+/] || token
  hash
end

#normalize_date(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 287

def normalize_date(hash)
  date = Array(hash[:date]).join(' ')

  unless (month = MONTH[date]).nil?
    month = '%02d' % month
  end

  if date =~ /(\d{4})/
    year = $1

    if month && date =~ /\b(\d{1,2})\b/
      day = '%02d' % $1.to_i
    end

    hash[:date] = [year, month, day].compact.join('-')
  end

  hash
end

#normalize_director(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 157

def normalize_director(hash)
  directors = hash[:director]

  directors.gsub!(/^\W+|\W+$/, '')
  directors.gsub!(/[^[:alpha:]]*direct(or|ed)?\b:w
                  [^[:alpha:]]*/i, '')
  directors.gsub!(/\bby\b/i, '')

  hash[:director] = normalize_names(directors)
  hash
end

#normalize_editor(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 106

def normalize_editor(hash)
  editors, *dangling = hash[:editor]

  unless dangling.empty?
    case
    when !hash.has_key?(:author)
      hash[:author] = editors
      hash[:editor] = dangling
      hash = normalize_author(hash)
      return normalize_editor(hash)
    when dangling[0] =~ /(\d+)/
      hash[:edition] = $1.to_i
    else
      unmatched(:editor, hash, dangling)
    end
  end

  hash[:'more-editors'] = true if strip_et_al(editors)

  editors.gsub!(/^\W+|\W+$/, '')
  editors.gsub!(/^in:?\s+/i, '')
  editors.gsub!(/\W*\b[Ee]d(s|itors?|ited)?\b\W*/, '')
  editors.gsub!(/\W*\b([Hh]rsg|gg?|Herausgeber)\b\W*/, '')
  editors.gsub!(/\b[Hh]erausgegeben von\b/, '')
  editors.gsub!(/\bby\b/i, '')

  is_trans = !!editors.gsub!(/[^[:alpha:]]*trans(lated)?[^[:alpha:]]*/i, '')

  hash[:editor] = normalize_names(editors)
  hash[:translator] = hash.delete :editor if is_trans

  hash
end

#normalize_isbn(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 390

def normalize_isbn(hash)
  isbn, *dangling = hash[:isbn]
  unmatched(:isbn, hash, dangling) unless dangling.empty?

  isbn = isbn[/[\d-]+/]
  hash[:isbn] = isbn

  hash
end

#normalize_journal(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 262

def normalize_journal(hash)
  journal, *dangling = hash[:journal]
  unmatched(:journal, hash, dangling) unless dangling.empty?

  journal.gsub!(/^[\s]+|[\.,:;\s]+$/, '')
  hash[:journal] = journal

  hash
end

#normalize_key(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 71

def normalize_key(hash)
  token, *dangling =  hash[:key]
  unmatched(:key, hash, dangling) unless dangling.empty?

  token.gsub!(/^[^[:alnum:]]+|[^[:alnum:]]+$/, '')
  token.gsub!(/^bibitem\{/i, '')

  hash[:key] = token
  hash
end

#normalize_location(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 375

def normalize_location(hash)
  location, *dangling = hash[:location]
  unmatched(:pages, hash, dangling) unless dangling.empty?

  location.gsub!(/^[^[:alnum:]]+|[^[:alnum:]]+$/, '')

  if !hash.has_key?(:publisher) && location =~ /:/
    location, publisher = location.split(/\s*:\s*/)
    hash[:publisher] = publisher
  end

  hash[:location] = location
  hash
end

#normalize_medium(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 408

def normalize_medium(hash)
  medium, *dangling = hash[:medium]
  unmatched(:medium, hash, dangling) unless dangling.empty?

  hash[:medium] = medium.split(/\W+/).reject(&:empty?).join('-')
  hash
end

#normalize_names(names) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 180

def normalize_names(names)
  names.gsub!(/\s*(\.\.\.|…)\s*/, '')
  names.gsub!(/;|:/, ',')

  # Add surname/initial punctuation separator for Vancouver-style names
  # E.g. Rang HP, Dale MM, Ritter JM, Moore PK
  if names.match(/^(\p{Lu}[^\s,.]+)\s+([\p{Lu}][\p{Lu}\-]{0,3})(,|[.]?$)/)
    names.gsub!(/\b(\p{Lu}[^\s,.]+)\s+([\p{Lu}][\p{Lu}\-]{0,3})(,|[.]?$)/, '\1, \2\3')
  end

  Namae.parse!(names).map { |name|
    name.normalize_initials
    name.sort_order

  }.join(' and ')

rescue => e
  warn e.message
  names
end

#normalize_pages(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 352

def normalize_pages(hash)
  pages, *dangling = hash[:pages]
  unmatched(:pages, hash, dangling) unless dangling.empty?

  # "volume.issue(year):pp"
  case pages
  when /(\d+) (?: \.(\d+))? (?: \( (\d{4}) \))? : (\d.*)/x
    hash[:volume] = $1.to_i
    hash[:number] = $2.to_i unless $2.nil?
    hash[:year] = $3.to_i unless $3.nil?
    hash[:pages] = $4
  end

  case hash[:pages]
  when /(\d+)\D+(\d+)/
    hash[:pages] = [$1,$2].join('–') # en-dash
  when  /(\d+)/
    hash[:pages] = $1
  end

  hash
end

#normalize_producer(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 169

def normalize_producer(hash)
  producers = hash[:producer]

  producers.gsub!(/^\W+|\W+$/, '')
  producers.gsub!(/[^[:alpha:]]*produc(er|ed)?[^[:alpha:]]*/i, '')
  producers.gsub!(/\bby\b/i, '')

  hash[:director] = normalize_names(producers)
  hash
end

#normalize_publisher(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 334

def normalize_publisher(hash)
  normalize :publisher, hash

  case hash[:publisher]
  when /^producers?$/i
    hash[:publisher] = hash[:producer]

  when /^authors?$/i
    hash[:publisher] = hash[:author]

  when /^editor?$/i
    hash[:publisher] = hash[:editor]

  end

  hash
end

#normalize_source(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 272

def normalize_source(hash)
  source, *dangling = hash[:source]
  unmatched(:source, hash, dangling) unless dangling.empty?

  case source
  when /dissertation abstracts/i
    source.gsub!(/\s*section \w: ([[:alnum:]\s]+).*$/i, '')
    hash[:category] = $1 unless $1.nil?
    hash[:type] = :thesis
  end

  hash[:source] = source
  hash
end

#normalize_title(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 203

def normalize_title(hash)
  title, source = hash[:title]

  unless source.nil?
    hash[:source] = source
    normalize(:source, hash)
  end

  extract_edition(title, hash)

  title.gsub!(/^\s+|[\.,:;\s]+$/, '')
  title.gsub!(/^["'”’´‘“`](.+)["'”’´‘“`]$/, '\1')

  hash[:title] = title

  hash
end

#normalize_translator(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 144

def normalize_translator(hash)
  translators = hash[:translator]

  translators.gsub!(/\b([Ii]n (d|ein)er )?[Üü]ber(s\.|setzt|setzung|tragen|tragung) v(\.|on\b)/, '')
  translators.gsub!(/^\W+|\W+$/, '')
  translators.gsub!(/[^[:alpha:]]*\btrans(l(ated)?)?\b[^[:alpha:]]*/i, '')
  translators.gsub!(/\bby\b/i, '')
  translators.gsub!(/\btrad\./i, '')

  hash[:translator] = normalize_names(translators)
  hash
end

#normalize_url(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 400

def normalize_url(hash)
  url, *dangling = hash[:url]
  unmatched(:url, hash, dangling) unless dangling.empty?

  hash[:url] = url[/([a-z]+:\/\/)?\w+\.\w+[\w\.\/%-]+/i] || url
  hash
end

#normalize_volume(hash) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 307

def normalize_volume(hash)
  volume, *dangling = hash[:volume]
  unmatched(:volume, hash, dangling) unless dangling.empty?

  if !hash.has_key?(:pages) && volume =~ /\D*(\d+):(\d+(?:[—–-]+)\d+)/
    hash[:volume], hash[:pages] = $1.to_i, $2
    hash = normalize_pages(hash)
  else
    case volume
    when /\D*(\d+)\D+(\d+[\s\/&—–-]+\d+)/
      hash[:volume], hash[:number] = $1.to_i, $2
    when /(\d+)?\D+no\.\s*(\d+\D+\d+)/
      hash[:volume] = $1.to_i unless $1.nil?
      hash[:number] = $2
    when /(\d+)?\D+no\.\s*(\d+)/
      hash[:volume] = $1.to_i unless $1.nil?
      hash[:number] = $2.to_i
    when /\D*(\d+)\D+(\d+)/
      hash[:volume], hash[:number] = $1.to_i, $2.to_i
    when /(\d+)/
      hash[:volume] = $1.to_i
    end
  end

  hash
end

#strip_et_al(names) ⇒ Object 



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# File 'lib/anystyle/parser/normalizer.rb', line 140

def strip_et_al(names)
  !!names.sub!(/(\bet\s+(al|coll)\b|\bu\.\s*a\.|(\band|\&)\s+others).*$/, '')
end