Module: Mireru::Widget

Defined in:
lib/mireru/widget.rb,
lib/mireru/widget/pdf.rb,
lib/mireru/widget/svg.rb,
lib/mireru/widget/text.rb,
lib/mireru/widget/image.rb,
lib/mireru/widget/video.rb,
lib/mireru/widget/binary.rb,
lib/mireru/widget/extracted_text.rb

Defined Under Namespace

Classes: Binary, ExtractedText, Image, PDF, SVG, Text, Video

Class Method Summary collapse

Class Method Details

.binary?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 102

def binary?(file)
  if /\.(la|lo|o|so|a|dll|exe|msi|tar|gz|zip|7z|lzh|rar|iso)\z/i =~ file
    true
  else
    bytes = File.read(file, 512)
    return false if bytes.nil?
    return false if utf16?(bytes)
    bytes.count("\x00-\x07\x0b\x0e-\x1a\x1c-\x1f") > (bytes.size / 10)
  end
end

.check ⇒ Object

TODO: improve



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# File 'lib/mireru/widget.rb', line 65

def check
  begin
    yield
  rescue LoadError
    $stderr.puts("Warning: #{$!.message}")
  end
end

.create(file, width, height, chupa = false) ⇒ Object 



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# File 'lib/mireru/widget.rb', line 24

def create(file, width, height, chupa=false)
  if chupa
    check do
      require "mireru/widget/extracted_text"
      return Widget::ExtractedText.new(file)
    end
  end

  if image?(file)
    return Widget::Image.new(file, width, height)
  end

  if video?(file) or music?(file)
    check do
      require "mireru/widget/video"
      return Widget::Video.new(file)
    end
  end

  if pdf?(file)
    check do
      require "mireru/widget/pdf"
      return Widget::PDF.new(file)
    end
  end

  if svg?(file)
    check do
      require "mireru/widget/svg"
      return Widget::SVG.new(file)
    end
  end

  if text?(file)
    return Widget::Text.new(file)
  end

  return Widget::Binary.new(file)
end

.document?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 93

def document?(file)
  /\.(odt|ods|odp|doc|xls|ppt|docx|xlsx|pptx)\z/i =~ file
end

.image?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 73

def image?(file)
  /\.(png|jpe?g|gif|ico|ani|bmp|pnm|ras|tga|tiff|xbm|xpm)\z/i =~ file
end

.music?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 77

def music?(file)
  /\.(og[ag]|wav|acc|mp3|m4a|wma|flac|tta|aiff|ape|tak)\z/i =~ file
end

.pdf?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 85

def pdf?(file)
  /\.pdf\z/i =~ file
end

.svg?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 89

def svg?(file)
  /\.svg\z/i =~ file
end

.text?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 97

def text?(file)
  return false if binary?(file)
  true
end

.utf16?(bytes) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 113

def utf16?(bytes)
  # TODO: simplify
  (bytes.start_with?("\xff\xfe".force_encoding("ASCII-8BIT")) or
     bytes.start_with?("\xfe\xff".force_encoding("ASCII-8BIT"))) and
    bytes.count("\x01-\x07\x0b\x0e-\x1a\x1c-\x1f") < (bytes.size / 20)
end

.video?(file) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mireru/widget.rb', line 81

def video?(file)
  /\.(ogm|mp4|m4v|flv|mpe?g2?|ts|mov|avi|divx|mkv|wmv|asf|wmx)\z/i =~ file
end