Module: Lingua::IT::Syllable

Defined in:
lib/lingua/it/syllable.rb

Constant Summary collapse

V =

This module is inspired by the Perl Lingua::IT::Hyphenation module. However, it uses a different (though not larger) set of patterns to compensate for the ‘special cases’ which arise out of Italian’s irregular orthography. A number of extra patterns (particularly for derived word forms) means that this module is somewhat more accurate than the Perl original. It’s not perfect, some extreme special cases could not be handled correctly, trough it’s well realiable 90% of times, at least in the number of syllables, that really matters for the Flesch index.

"[aeiouàèéìòù]"
C = 
"[b-df-hj-np-tv-z]"
Y = 
"[b-df-hj-mp-tv-z]"
S = 
"iut"
X = 
"fi|aci"
Z = 
"i[aeo]"

Class Method Summary collapse

Class Method Details

.syllables(text) ⇒ Object 



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# File 'lib/lingua/it/syllable.rb', line 23

def self.syllables(text)
  words = text.dup.split(/[^a-zA-Zàèéìòù'0-9]+/)
  hyphenation = ""
  words.each do |word|
    word.gsub!(/(#{V})(#{S})/io, '\1=iu=t')
    word.gsub!(/(#{V})(#{Z})/io, '\1=\2')
    word.gsub!(/(#{X})(#{V})/io, '\1=\2')
    word.gsub!(/(#{C})(#{V})(#{V})(#{Y})/io, '\1\2=\3=\4')
    word.gsub!(/(#{V})([bcfgptv][lr])/io, '\1=\2')
    word.gsub!(/(#{V})([cg]h)/io, '\1=\2')
    word.gsub!(/(#{V})(gn)/io, '\1=\2')
    word.gsub!(/(#{C})\1/io, '\1=\1')
    word.gsub!(/(s#{C})/io, '=\1')
    1 while word.gsub!(/(#{V}*#{C}+#{V}+)(#{C}#{V})/io, '\1=\2')
    1 while word.gsub!(/(#{V}*#{C}+#{V}+#{C})(#{C})/io, '\1=\2')
    word.gsub!(/^(#{V}+#{C})(#{C})/io, '\1=\2')
    word.gsub!(/^(#{V}+)(#{C}#{V})/io, '\1=\2')
    word.sub!(/^=/, '')
    word.sub!(/=$/, '')
    word.gsub!(/=+/,'=');
    # special cases
    word.gsub!(/(le)([oa]n)/i, '\1=\2')
    word.gsub!(/(le)([oa])(an)/i, '\1=\2=\3')
    word.gsub!(/(spe)=(le)=(o)/i, '\1=\2\3')
    word.gsub!(/([gd]i)=(#{V})/io, '\1\2')
    word.gsub!(/(ni)=(#{V})/io, '\1\2')
    word.gsub!(/=(e)=(l)/i, '\1\2')
    hyphenation += "#{word}="
  end
  hyphenation.split('=')
end