From: Clement Ow <clement.ow@...>
Date: 2008-04-09T11:03:26+09:00
Subject: Re: Do arrays use up alot of memory space?

Thanks Botp and Philip for the help! ;) anyway, ans philip, the network 
i'm running is quite optimal though not really sure about the speeds, as 
I'm running this program in a company with alot of servers dealing with 
loads of jobs a day :)

Pe単a, Botp wrote:
> From: Clement Ow [mailto:clement.ow@asia.bnpparibas.com]
> # $options= 
> you may remove the "$" sign ;)

i use the "$" sign because I have a config file that holds all my 
values, but I didnt include it for the purpose of this example ;)
> 
> 
> # U:/movtest/source
> # U:/movtest/new
> # U:/movtest/new1]
> #
> # $dest=
> # %w[U:/test_1/
> # U:/dest1/
> # U:/dest2/
> # U:/dest3/
> # U:/dest4/]
> #
> # while i<=j && i1<=j1 && i2<=j2
> 
> hmmm, you just created 3 parallel arrays. Either you can create one 
> multi-dimensional or a hash.
> 
> 
> # Dir.chdir($source[i])
> 
> you may not need this
> 
> # print "\nSource: " + Dir.getwd + "\t\n"
> # print "Dest: " + $dest[i1] + "\n"
> # print "Options: " + $options[i2] +"\n"
> # FileUtils.cp_r Dir.glob($options[i2]), $dest[i1]
> # print "File Mov Test:Success"
> # i+=1
> # i1+=1
> # i2+=1
> 
> if you modify your code, you may not need those increments ;)
> 
> # end
> # ------------------
> # Apparently, when moving large files (i.e file size 50mb) it takes
> # relatively long as when i use ROBOCOPY (a robust copying software by
> # MSServer),
> 
> robocopy seems to do stat on the filetransfer speed to get the optimum 
> chunk to transfer. You can do something like that in ruby, but you'll 
> have to work harder (since your code/logic will get a bit longer)
> 
> # but I cant use robocopy because it has it's limitations
> 
> it's not perfect, and w ruby, you can beat it :)
yea, limitations being that I cant have exceptions while selecting a 
serious of folders. EG. I wanna select files and folders that start with 
2008 but I want to keep the last day of the month untouched.(still yet 
to figure out this part though)
> 
> So, if i were to tackle this, i'd first do, (note, this is ruby 
> pseudocode, ergo untested since i do not have time and space to test it 
> now...)
> 
> 
> source=%w[C:/movtest/testing
>   C:/movtest/testing/new
>   U:/movtest/source
>   U:/movtest/new
>   U:/movtest/new1]
> 
> dest=%w[U:/test_1/
>   U:/dest1/
>   U:/dest2/
>   U:/dest3/
>   U:/dest4/]
> 
> selections=["2008*", "2008*", "700*", "2008*", "2008*"]
> 
> # here i combine those 3 arrays into 1 multi-dim array
> sd_a=source.zip(dest,options)

hmmm, would combining the arrays be feasible if i were to add on more 
values to the either of the arrays?

> 
> sd_a.each do |sd|
>   source, destination, selections = sd
>   src = File.join source,selections
>   puts "Source: #{src}"
>   puts "Dest:   #{destination}"
> 
>   # i comment the 2 lines below for you to choose bw recurse or not
>   # again, if you recurse, check for directory overlaps
> 
>   # FileUtils.cp src, destination
>   # FileUtils.cp_r src, destination

This command runs an error because the value of src is 
"C:/movtest/test/2008*" and it doesnt recognise this wildcard but 
instead looks for the file which has the name 2008*.
so i tried to chang it alil:

  Dir.chdir(source)
  FileUtils.cp_r Dir.glob('2008*'), source, destination

But still runs an error here showing :
Source: C:/movtest/testing/2008*
Dest:   U:/test_1/
C:/movtest/testing
c:/ruby/lib/ruby/1.8/fileutils.rb:1438:in `delete': can't convert Symbol 
into St
ring (TypeError)
        from c:/ruby/lib/ruby/1.8/fileutils.rb:1438:in 
`fu_check_options'
        from c:/ruby/lib/ruby/1.8/fileutils.rb:1437:in `each'
        from c:/ruby/lib/ruby/1.8/fileutils.rb:1437:in 
`fu_check_options'
        from c:/ruby/lib/ruby/1.8/fileutils.rb:418:in `cp_r'
        from testing.rb:44
        from testing.rb:32:in `each'
        from testing.rb:32

I have tried ways and means to try correct it but to no avail. Is there 
anything majorly wrong with my code?
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