Class: TextConverter::Service

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options) ⇒ Service

Returns a new instance of Service.



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# File 'lib/text_converter.rb', line 37

def initialize(name, options)
  @name = name
  @url = options['url']
  @charset = options['charset']
  @xpath = options['xpath']
end

Instance Attribute Details

#charset ⇒ Object (readonly)

Returns the value of attribute charset.



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# File 'lib/text_converter.rb', line 35

def charset
  @charset
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/text_converter.rb', line 35

def name
  @name
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/text_converter.rb', line 35

def url
  @url
end

#xpath ⇒ Object (readonly)

Returns the value of attribute xpath.



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# File 'lib/text_converter.rb', line 35

def xpath
  @xpath
end

Instance Method Details

#build_url(text) ⇒ Object 



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# File 'lib/text_converter.rb', line 48

def build_url(text)
  case charset
  when 'sjis'
    text = NKF.nkf('-Ws', text)
  when 'euc'
    text = NKF.nkf('-We', text)
  end

  url.gsub(/%s/, CGI.escape(text))
end

#convert(text) ⇒ Object 



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# File 'lib/text_converter.rb', line 44

def convert(text)
  parse(get(text))
end

#get(text) ⇒ Object 



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# File 'lib/text_converter.rb', line 59

def get(text)
  result = open(build_url(text)).read

  case charset
  when 'sjis'
    result = NKF.nkf('-Sw', result)
  when 'euc'
    result = NKF.nkf('-Ew', result)
  end

  result
end

#parse(result) ⇒ Object 



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# File 'lib/text_converter.rb', line 72

def parse(result)
  if xpath
    doctype = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">'
    html = Nokogiri::HTML.parse(doctype + result, nil, 'utf-8')
    result = html.xpath(xpath).text
  end

  result
end