From: Stuart Clarke <stuart.clarke1986@...>
Date: 2010-09-04T20:24:23+09:00
Subject: Slow Find.find - real problem

Hey,

I have a real head ache and would really appreciate any advice.

I have a folder with 100,000's of files within it and I need to run a
rename process across these.

def renameFile(oldID, newID)
  Find.find(@pdfDIR) do |curItem|
    if File.file?(curItem) and curItem[/.pdf$/i] and
File.basename(curItem)[/^T/i]                            #If the file is
valid, is a PDF and it has not been renamed with T on the front
    else
      if File.basename(curItem.to_s.strip) == oldID
        File.rename(curItem.to_s.strip, "#{@pdfDIR }\\T#{newID}.pdf")
#rename the exprted PDF file  to the new filename with T on the front
      end
    end
  end
end

My main code basically reads the 2 pieces of data from a CSV file, first
the current filename of the file and then the new filename I want to
rename the file to. In summary, i grab the old and new filenames from a
CSV file one at a time then call the above object where I search the
given directory for a filename that matches the old file name, when I
find it I rename it to the new name.

My issue is this is very very slow and is taking about an hour to do 10
file renames. Is there any way I can speed this up?

Many thanks

Stuart
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