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Upload File : current_dir [ Writeable ] document_root [ Writeable ]

--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: If <tt>to</tt> is a valid directory, <tt>from</tt> will be appended to <tt>to</tt>, adding and escaping backslashes as necessary. Otherwise, <tt>to</tt> will be returned. Useful for appending <tt>from</tt> to <tt>to</tt> only if the filename was not specified in <tt>to</tt>.
full_name: File::catname
is_singleton: true
name: catname
params: (from, to)
visibility: public