Class: RussianPost::Captcha

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

Defined Under Namespace

Classes: Pattern, Patterns, RecognitionError

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#patterns ⇒ Object (readonly)

Returns the value of attribute patterns.



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# File 'lib/russian_post/captcha.rb', line 10

def patterns
  @patterns
end

Class Method Details

.for_data(data, patterns = nil) ⇒ Object 



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# File 'lib/russian_post/captcha.rb', line 18

def for_data(data, patterns = nil)
  RussianPost::Captcha.new(nil, data, patterns)
end

.for_url(url, patterns = nil) ⇒ Object 



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# File 'lib/russian_post/captcha.rb', line 14

def for_url(url, patterns = nil)
  RussianPost::Captcha.new(url, nil, patterns)
end

Instance Method Details

#image ⇒ Object 



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# File 'lib/russian_post/captcha.rb', line 24

def image
  @data ||= fetch_image
end

#recognize ⇒ Object 



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# File 'lib/russian_post/captcha.rb', line 36

def recognize
  @recognize ||= recognize!
end

#recognize! ⇒ Object 



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# File 'lib/russian_post/captcha.rb', line 40

def recognize!
  captcha_image = grayscale(image)

  results = {}

  for x in 0..captcha_image.width - 2
    for y in 0..captcha_image.height - 2
      result = patterns.find(captcha_image, x, y)

      results[x] = result if result
    end
  end

  Hash[results.sort].values
end

#text ⇒ Object 



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# File 'lib/russian_post/captcha.rb', line 28

def text
  @recognized_text ||= prepare_text(recognize)
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/russian_post/captcha.rb', line 32

def valid?
  text.size == 5
end