Class: Highscore::Content

Inherits:
Object
  • Object
show all
Defined in:
lib/highscore/content.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(content, wordlist = nil) ⇒ Content

Returns a new instance of Content.

Parameters:

  • content —

    String

  • wordlist (defaults to: nil) —

    Highscore::Wordlist



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# File 'lib/highscore/content.rb', line 14

def initialize(content, wordlist = nil)
  @content = content
  @whitelist = @blacklist = nil
  @language_wordlists = {}

  if wordlist.nil?
    @blacklist = Highscore::Blacklist.load_default_file
  elsif wordlist.kind_of? Highscore::Blacklist
    @blacklist = wordlist
  else
    @whitelist = wordlist
  end

  @emphasis = {
    :multiplier => 1.0,
    :upper_case => 3.0,
    :long_words => 2.0,
    :long_words_threshold => 15,
    :vowels => 0,
    :consonants => 0,
    :ignore_short_words => true,
    :ignore_case => false,
    :word_pattern => /\p{Word}+/u,
    :stemming => false
  }
  
  if RUBY_VERSION =~ /^1\.8/
    @emphasis[:word_pattern] = /\w+/
  end
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/highscore/content.rb', line 9

def content
  @content
end

#language_wordlists ⇒ Object

Returns the value of attribute language_wordlists.



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# File 'lib/highscore/content.rb', line 10

def language_wordlists
  @language_wordlists
end

Instance Method Details

#add_wordlist(language_wordlist, language) ⇒ Object

add another wordlist, given a language

Parameters:

  • language_wordlist —

    Highscore::Wordlist

  • language —

    String

Raises:

  • (ArgumentError) 


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# File 'lib/highscore/content.rb', line 64

def add_wordlist(language_wordlist, language)
  raise ArgumentError, "Not a valid Wordlist" unless language_wordlist.kind_of? Highscore::Wordlist
  language_wordlists[language.to_sym] = language_wordlist
end

#configure(&block) ⇒ Object

configure ranking

Parameters:

  • block 


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# File 'lib/highscore/content.rb', line 48

def configure(&block)
  instance_eval(&block)
end

#keywords(opts = {}) ⇒ Object

get the ranked keywords

Returns:

  • Highscore::Keywords



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# File 'lib/highscore/content.rb', line 72

def keywords(opts = {})
  used_wordlist = nil
  if opts[:lang]
    used_wordlist = language_wordlists[opts[:lang].to_sym]
  else
    used_wordlist = wordlist
  end
    
  @emphasis[:stemming] = use_stemming?

  keywords = Keywords.new

  Keywords.find_keywords(processed_content, used_wordlist, word_pattern).each do |text|
    text = text.to_s
    text = text.stem if @emphasis[:stemming]

    if not (text.match(/^[\d]+(\.[\d]+){0,1}$/) or text.length <= 2)
      keywords << Highscore::Keyword.new(text, weight(text))
    elsif allow_short_words
      keywords << Highscore::Keyword.new(text, weight(text))
    end
  end

  keywords
end

#language ⇒ Object

guess the language of the content and return a symbol for it

> done via whatlanguage gem

Returns:

  • Symbol



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# File 'lib/highscore/content.rb', line 113

def language
  @content.language
end

#set(key, value) ⇒ Object

set emphasis options to rank the content

Parameters:

  • key —

    Symbol

  • value —

    Object



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# File 'lib/highscore/content.rb', line 56

def set(key, value)
  @emphasis[key.to_sym] = value
end

#wordlist ⇒ Object

get the used wordlist

Returns:

  • Highscore::Wordlist



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# File 'lib/highscore/content.rb', line 101

def wordlist
  unless @whitelist.nil?
    @whitelist
  else
    @blacklist
  end
end