From: "Victor H. Goff III" <keeperotphones@...>
Date: 2008-09-05T10:58:08+09:00
Subject: Re: How do I quickly search the end of a huge text file?

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IO::SEEK_END at Ruby-Doc may be the ticket...
http://www.ruby-doc.org/core/classes/IO.html#M002305


On Thu, Sep 4, 2008 at 8:51 PM, Brian Green <gallagherjb@gmail.com> wrote:

> I am trying to create a ruby script that will search a maya ascii file
> for specific text. The problem I'm running into is that it's running to
> slow for the system at work. I know that all the information I need is
> in the last 5% of the text file - but I haven't been able to figure out
> a way to either jump to near the end, and then start search through
> lines or even better iterating backwards through the file till I find
> what I'm looking for... here is the code I'm currently using - which
> works but slowly - any suggestions for how to speed this up would be
> greatly appreciated! :D
>
> require "FileUtils"
> require "ftools"
>
> def FindRenderLayers (root)
> layersFile = []
> dirLocation = root.gsub(/(\\)$/, '')
> list = Dir.entries(dirLocation)
>
>  list.each do |file|
>    if file =~ /\.ma$/
>       fileName = root + file
>       layersFile.push file
>       File.open(fileName) do |file|
>        while line = file.gets
>          if line =~ /connectAttr
> (\"renderLayerManager.rlmi\[[0-9]\]\")/
>            if $1 != "defaultRenderLayer"
>              editedLine = "-" + $1
>              layersFile.push editedLine
>            end
>          end
>        end
>      end
>    end
>  end
>  return layersFile
> end
>
> root = "C:\\Users\\Brian\\Documents\\Ruby\\"
> puts FindRenderLayers(root)
> --
> Posted via http://www.ruby-forum.com/.
>
>

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