Class: Parts::FilePart

Inherits:
Object
  • Object
show all
Includes:
Part
Defined in:
lib/parts.rb

Overview

Represents a part to be filled from file IO.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Part

new, #to_io

Constructor Details

#initialize(boundary, name, io) ⇒ FilePart

Returns a new instance of FilePart.



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# File 'lib/parts.rb', line 40

def initialize(boundary, name, io)
  file_length = io.respond_to?(:length) ?  io.length : File.size(io.local_path)
  @head = build_head(boundary, name, io.original_filename, io.content_type, file_length,
                     io.respond_to?(:opts) ? io.opts : {})
  @foot = "\r\n"
  @length = @head.length + file_length + @foot.length
  @io = CompositeReadIO.new(StringIO.new(@head), io, StringIO.new(@foot))
end

Instance Attribute Details

#length ⇒ Object (readonly)

Returns the value of attribute length.



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# File 'lib/parts.rb', line 39

def length
  @length
end

Instance Method Details

#build_head(boundary, name, filename, type, content_len, opts = {}) ⇒ Object 



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# File 'lib/parts.rb', line 49

def build_head(boundary, name, filename, type, content_len, opts = {})
  trans_encoding = opts["Content-Transfer-Encoding"] || "binary"
  content_disposition = opts["Content-Disposition"] || "form-data"

  part = ''
  part << "--#{boundary}\r\n"
  part << "Content-Disposition: #{content_disposition}; name=\"#{name.to_s}\"; filename=\"#{filename}\"\r\n"
  part << "Content-Length: #{content_len}\r\n"
  if content_id = opts["Content-ID"]
    part << "Content-ID: #{content_id}\r\n"
  end
  part << "Content-Type: #{type}\r\n"
  part << "Content-Transfer-Encoding: #{trans_encoding}\r\n"
  part << "\r\n"
end