Moving all files in a folder to another hard drive

#11 08-25-2008, 09:34 PM

On Tue, 2008-08-26 at 01:07 +0900, Dave Bass wrote:
> Presumably you're using the NTFS filesystem? There's some information on
> it here:
>
> http://en.wikipedia.org/wiki/NTFS
>
> Since the filesystem has a closed specification (thank you Microsoft),
> it may be that the Ruby developers have been unable to work out exactly
> how it works with filenames that contain Unicode characters.

Yes ... my advice is to "shell out" to Windows or call native C
libraries, rather than trying to "reverse engineer" NTFS.
>
>
>
--
M. Edward (Ed) Borasky
ruby-perspectives.blogspot.com

"A mathematician is a machine for turning coffee into theorems." --
Alfréd Rényi via Paul Erdős

#12 08-27-2008, 02:05 AM

Axel Etzold wrote:

> require "cgi"
>
> files.each { |file|
> p CGI.escape(file)
> # and then move files
> }
>
> That's not elegant, but it will produce names with only % and ASCII
> letters.
>
>
> How does rio behave under Windows (http://rio.rubyforge.org/) ?

thanks for helping. the cgi actually prints out %3F which is the ASCII
for "?"
since maybe the byte printed by each byte is 69, so encoding with CGI
method will give %3F

I tried Rio. It actually bypass all files with international characters
in it. So for example, if my directory has 10 files, and 3 of them with
the filename containing international characters in them, then
rio(basedir).files['*.*'] actually just return 7 files.

--
Posted via http://www.ruby-forum.com/.

#13 08-27-2008, 06:31 AM

2008/8/24 SpringFlowers AutumnMoon <summercoolness@gmail.com>:
> I have some code below to move all files in a folder to another hard
> drive (which has 2TB of space). It runs well except that whenever a
> filename has some international characters, then the line
>
> if File.file?(basedir + file)
>
> will fail. The file is printed as "Chart for ???????.xls"
>
> Does someone know how to solve this problem with Ruby being so powerful?
> The program is running on Windows. (Vista or XP should both be ok).
>
> code:
> ------------------------------------
>
> require 'ftools'
>
> basedir = "c:/data/"
> target = "w:/data/"
>
> Dir.chdir(basedir)
> files = Dir.glob("*");
>
> i = 1
> files.each { |file|
> p i, file
> if File.file?(basedir + file)
> puts "Moving..."
> File.move(basedir + file, target + file)
> puts "Now sleeping..."
> sleep(60)
> end
> i += 1
> }

As a quick workaround, try this:

require 'Win32API'
FILE_ATTRIBUTE_DIRECTORY = 0x10
MoveFileW = Win32API.new('kernel32','MoveFileW','PP','I')
GetFileAttributesW = Win32API.new('kernel32','GetFileAttributesW','P',' L')

basedir = "c:/data/"
target = "w:/data/"
basedirw = basedir.gsub(/(.)/,"\\1\000")
targetw = target.gsub(/(.)/,"\\1\000")

Dir.chdir(basedir)
files = `cmd /u /c dir /b `.split("\r\000\n\000")

i = 1
files.each {|file|
p i, file
if GetFileAttributesW.call(basedir + file) != FILE_ATTRIBUTE_DIRECTORY
puts "Moving ..."
MoveFileW.call(basedirw+file+"\000",targetw+file+" \000")
puts "Now sleeping..."
end
i += 1
}

Regards,

Park Heesob

#14 08-28-2008, 03:20 AM

Heesob Park wrote:
> 2008/8/24 SpringFlowers AutumnMoon <summercoolness@gmail.com>:
>>
>>
>> }
> As a quick workaround, try this:
>
>
> require 'Win32API'
> FILE_ATTRIBUTE_DIRECTORY = 0x10
> MoveFileW = Win32API.new('kernel32','MoveFileW','PP','I')
> GetFileAttributesW =
> Win32API.new('kernel32','GetFileAttributesW','P',' L')
>
> [...]

Wow, it really works! You rock, Park! Looks like one key line here is
the `cmd /u /c dir /b`, which is to get the filenames in unicode
characters.

After that, I tried

p "good" if File.file?(file)

in Ruby 1.8.6 and 1.9 and they both gave error that the filename
contains null character.

Hm, I wonder for people who use Ruby on Japanese Windows XP/Vista, or
European version of Windows, how do they deal with getting filenames
that has non-English characters?

Do we want to have a small speed competition and see which country can
provide the first solution using fairly standard Ruby? (without
resorting to win32api)?

Thanks a lot, Park!
--
Posted via http://www.ruby-forum.com/.

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