Module: TextUtils::TitleHelper

Included in:
TextUtils
Defined in:
lib/textutils/helper/title_helper.rb

Instance Method Summary collapse

Instance Method Details

#strip_part_markers(title) ⇒ Object

  • todo: use new additional sub module ???

    e.g. TextUtils::Reader::TagHelper

    lets us use “classic” web helpers a la rails find a good name for sub module - Reader? Fixtures? Values? Parser?



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# File 'lib/textutils/helper/title_helper.rb', line 13

def strip_part_markers( title )   # use different name e.g. strip_name_markers/strip_name_enclosure etc.??
   # remove optional part markers
   # e.g. Bock ‹Damm› becomes =>  Bock Damm
   #      ‹Estrella› ‹Damm› Inedit becomes =>  Estrella Damm Inedit

   title.gsub( /[<>‹›]/, '' )
end

#strip_special_chars(title) ⇒ Object 



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# File 'lib/textutils/helper/title_helper.rb', line 51

def strip_special_chars( title )
    # remove special chars (e.g. %°&)
    title.gsub( /[%&°]/, '' )
end

#strip_subtitles(title) ⇒ Object 



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# File 'lib/textutils/helper/title_helper.rb', line 28

def strip_subtitles( title )
    # remove optional longer title part in ()
    # e.g. Las Palmas (de Gran Canaria) => Las Palmas
    #      Palma (de Mallorca) => Palma

    title.gsub( /\([^\)]+\)/, '' )
end

#strip_tags(title) ⇒ Object

todo: use an alias or rename for better name ??



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# File 'lib/textutils/helper/title_helper.rb', line 36

def strip_tags( title )   # todo: use an alias or rename for better name ??
    # remove optional longer title part in {}
    #  e.g. Ottakringer {Bio}   => Ottakringer
    #       Ottakringer {Alkoholfrei} => Ottakringer
    #
    # todo: use for autotags? e.g. {Bio} => bio 
    
    title.gsub( /\{[^\}]+\}/, '' )
end

#strip_translations(title) ⇒ Object 



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# File 'lib/textutils/helper/title_helper.rb', line 21

def strip_translations( title )
    # remove optional english translation in square brackets ([])
    # e.g. Wien [Vienna]  =>  Wien

    title.gsub( /\[[^\]]+\]/, '' )
end

#strip_whitespaces(title) ⇒ Object 



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# File 'lib/textutils/helper/title_helper.rb', line 46

def strip_whitespaces( title )
    # remove all whitespace and punctuation
    title.gsub( /[ \t_\-\.()\[\]'"\/]/, '' )
end

#title_esc_regex(title_unescaped) ⇒ Object 



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# File 'lib/textutils/helper/title_helper.rb', line 149

def title_esc_regex( title_unescaped )
    
    ##  escape regex special chars e.g. . to \. and ( to \( etc.
    # e.g. Benfica Lis.
    # e.g. Club Atlético Colón (Santa Fe)

    ## NB: cannot use Regexp.escape! will escape space '' to '\ '
    ## title = Regexp.escape( title_unescaped )
    title = title_unescaped.gsub( '.', '\.' )
    title = title.gsub( '(', '\(' )
    title = title.gsub( ')', '\)' )

    ##  match accented char with or without accents
    ##  add (ü|ue) etc.
    ## also make - optional change to (-| ) e.g. Blau-Weiss == Blau Weiss

    ## todo: add some more
    ## see http://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references  for more
    ##
    ##  reuse for all readers!
    
    alternatives = [
      ['-', '(-| )'],  ## e.g. Blau-Weiß Linz
      ['æ', '(æ|ae)'],  ## e.g. 
      ['á', '(á|a)'],  ## e.g. Bogotá, Sársfield
      ['ã', '(ã|a)'],  ## e.g  São Paulo
      ['ä', '(ä|ae)'],  ## e.g. 
      ['ç', '(ç|c)'],  ## e.g. Fenerbahçe
      ['é', '(é|e)'],  ## e.g. Vélez
      ['ê', '(ê|e)'],  ## e.g. Grêmio
      ['ñ', '(ñ|n)'],  ## e.g. Porteño
      ['ň', '(ň|n)'],  ## e.g. Plzeň
      ['Ö', '(Ö|Oe)'], ## e.g. Österreich
      ['ö', '(ö|oe)'],  ## e.g. Mönchengladbach
      ['ó', '(ó|o)'],   ## e.g. Colón
      ['ș', '(ș|s)'],   ## e.g. Bucarești
      ['ß', '(ß|ss)'],  ## e.g. Blau-Weiß Linz
      ['ü', '(ü|ue)'],  ## e.g. 
      ['ú', '(ú|u)']  ## e.g. Fútbol
    ]
    
    alternatives.each do |alt|
      title = title.gsub( alt[0], alt[1] )
    end

    title
end

#title_to_key(title) ⇒ Object 



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# File 'lib/textutils/helper/title_helper.rb', line 56

def title_to_key( title )

    ## NB: used in/moved from readers/values_reader.rb

    ## NB: downcase does NOT work for accented chars (thus, include in alternatives)
    key = title.downcase

    key = strip_part_markers( key )  # e.g. ‹Estrella› ‹Damm› Inedit becomes =>  Estrella Damm Inedit

    key = strip_translations( key )

    key = strip_subtitles( key )

    key = strip_tags( key )

    key = strip_whitespaces( key )

    key = strip_special_chars( key )

    ##  turn accented char into ascii look alike if possible
    ##
    ## todo: add some more
    ## see http://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references  for more
    
    ## todo: add unicode codepoint name
    
    alternatives = [
      ['ß', 'ss'],
      ['æ', 'ae'],
      ['ä', 'ae'],
      ['ā', 'a' ],  # e.g. Liepājas
      ['á', 'a' ],  # e.g. Bogotá, Králové
      ['ã', 'a' ],  # e.g  São Paulo
      ['ă', 'a' ],  # e.g. Chișinău
      ['â', 'a' ],  # e.g  Goiânia
      ['å', 'a' ],  # e.g. Vålerenga
      ['ą', 'a' ],  # e.g. Śląsk
      ['ç', 'c' ],  # e.g. São Gonçalo, Iguaçu, Neftçi
      ['ć', 'c' ],  # e.g. Budućnost
      ['č', 'c' ],  # e.g. Tradiční, Výčepní
      ['é', 'e' ],  # e.g. Vélez, Králové
      ['è', 'e' ],  # e.g. Rivières
      ['ê', 'e' ],  # e.g. Grêmio
      ['ě', 'e' ],  # e.g. Budějovice
      ['ĕ', 'e' ],  # e.g. Svĕtlý
      ['ė', 'e' ],  # e.g. Vėtra
      ['ë', 'e' ],  # e.g. Skënderbeu
      ['ğ', 'g' ],  # e.g. Qarabağ
      ['ì', 'i' ],  # e.g. Potosì
      ['í', 'i' ],  # e.g. Ústí
      ['ł', 'l' ],  # e.g. Wisła, Wrocław
      ['ñ', 'n' ],  # e.g. Porteño
      ['ň', 'n' ],  # e.g. Plzeň, Třeboň
      ['ö', 'oe'],
      ['ő', 'o' ],  # e.g. Győri
      ['ó', 'o' ],  # e.g. Colón, Łódź, Kraków
      ['õ', 'o' ],  # e.g. Nõmme
      ['ø', 'o' ],  # e.g. Fuglafjørdur, København
      ['ř', 'r' ],  # e.g. Třeboň
      ['ș', 's' ],  # e.g. Chișinău, București
      ['ş', 's' ],  # e.g. Beşiktaş
      ['š', 's' ],  # e.g. Košice
      ['ť', 't' ],  # e.g. Měšťan
      ['ü', 'ue'],
      ['ú', 'u' ],  # e.g. Fútbol
      ['ū', 'u' ],  # e.g. Sūduva
      ['ů', 'u' ],  # e.g. Sládkův
      ['ı', 'u' ],  # e.g. Bakı   # use u?? (Baku) why-why not?
      ['ý', 'y' ],  # e.g. Nefitrovaný
      ['ź', 'z' ],  # e.g. Łódź
      ['ž', 'z' ],  # e.g. Domžale, Petržalka

      ['Č', 'c' ],  # e.g. České
      ['İ', 'i' ],  # e.g. İnter
      ['Í', 'i' ],  # e.g. ÍBV
      ['Ł', 'l' ],  # e.g. Łódź
      ['Ö', 'oe' ], # e.g. Örebro
      ['Ř', 'r' ],  # e.g. Řezák
      ['Ś', 's' ],  # e.g. Śląsk
      ['Š', 's' ],  # e.g. MŠK
      ['Ş', 's' ],  # e.g. Şüvälan
      ['Ú', 'u' ],  # e.g. Ústí, Újpest
      ['Ž', 'z' ]   # e.g. Žilina
    ]
    
    alternatives.each do |alt|
      key = key.gsub( alt[0], alt[1] )
    end

    key
end