Module IOStream
In: lib/dm-paperclip/iostream.rb

Provides method that can be included on File-type objects (IO, StringIO, Tempfile, etc) to allow stream copying and Tempfile conversion.

Methods

Public Instance methods

Copies one read-able object from one place to another in blocks, obviating the need to load the whole thing into memory. Defaults to 8k blocks. If this module is included in both StringIO and Tempfile, then either can have its data copied anywhere else without typing worries or memory overhead worries. Returns a File if a String is passed in as the destination and returns the IO or Tempfile as passed in if one is sent as the destination.

[Source]

    # File lib/dm-paperclip/iostream.rb, line 18
18:   def stream_to path_or_file, in_blocks_of = 8192
19:     dstio = case path_or_file
20:             when String   then File.new(path_or_file, "wb+")
21:             when IO       then path_or_file
22:             when Tempfile then path_or_file
23:             end
24:     buffer = ""
25:     self.rewind
26:     while self.read(in_blocks_of, buffer) do
27:       dstio.write(buffer)
28:     end
29:     dstio.rewind    
30:     dstio
31:   end

Returns a Tempfile containing the contents of the readable object.

[Source]

    # File lib/dm-paperclip/iostream.rb, line 6
 6:   def to_tempfile
 7:     name = respond_to?(:original_filename) ? original_filename : (respond_to?(:path) ? path : "stream")
 8:     tempfile = Paperclip::Tempfile.new(File.basename(name))
 9:     tempfile.binmode
10:     self.stream_to(tempfile)
11:   end

[Validate]