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Class: Rack::Files::BaseIterator

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
Iterator
Inherits: Object
Defined in: lib/rack/files.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(path, ranges, options) ⇒ BaseIterator

[ GitHub ] 

  


# File 'lib/rack/files.rb', line 132



def initialize(path, ranges, options)
  @path = path
  @ranges = ranges
  @options = options
end


  







Instance Attribute Details



  

    #multipart?  ⇒ Boolean  (readonly, private)
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 165



def multipart?
  ranges.size > 1
end


  








  

    #options   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 130



attr_reader :path, :ranges, :options


  








  

    #path   (readonly)
    Also known as: #to_path
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 130



attr_reader :path, :ranges, :options


  








  

    #ranges   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 130



attr_reader :path, :ranges, :options


  







Instance Method Details



  

    #bytesize  
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 152



def bytesize
  size = ranges.inject(0) do |sum, range|
    sum += multipart_heading(range).bytesize if multipart?
    sum += range.size
  end
  size += "\r\n--#{MULTIPART_BOUNDARY}--\r\n".bytesize if multipart?
  size
end


  








  

    #close  
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 161



def close; end


  








  

    #each  
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 138



def each
  ::File.open(path, "rb") do |file|
    ranges.each do |range|
      yield multipart_heading(range) if multipart?

      each_range_part(file, range) do |part|
        yield part
      end
    end

    yield "\r\n--#{MULTIPART_BOUNDARY}--\r\n" if multipart?
  end
end


  








  

    #each_range_part(file, range)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 179



def each_range_part(file, range)
  file.seek(range.begin)
  remaining_len = range.end - range.begin + 1
  while remaining_len > 0
    part = file.read([8192, remaining_len].min)
    break unless part
    remaining_len -= part.length

    yield part
  end
end


  








  

    #multipart_heading(range)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rack/files.rb', line 169



def multipart_heading(range)
<<-EOF
\r
--#{MULTIPART_BOUNDARY}\r
content-type: #{options[:mime_type]}\r
content-range: bytes #{range.begin}-#{range.end}/#{options[:size]}\r
\r
EOF
end