Ruby method for convering Windows short path into long path?

Question

Is there a built-in method in Ruby to convert a Windows short path like

C:\PROGRA~2\MICROS~1.0\VC\bin\amd64

into its corresponding long path

C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64

I've tried

File.expand_path(short_path)
Pathname.new(short_path).cleanpath
Pathname.new(short_path).realpath
Dir.chdir(short_path) { Dir.pwd }

but none of these worked.

If possible, I'd like to avoid calling the Win32 API directly like in this answer, or ugly work-arounds like spawning PowerShell:

%x{powershell (Get-Item -LiteralPath #{short_path}).FullName}

Just a suggestion: would you mind to try to `Dir.chdir` followed by `Dir.pwd`. — Aleksei Matiushkin, Jan 21 '16 at 09:10
Unfortunately, that doesn't work either. I'll update my question. — sschuberth, Jan 21 '16 at 09:16

score 3 · Answer 1 · answered Jul 26 '16 at 23:18

3

Here is one possible workaround:

path=Dir.mktmpdir('vendor')
=> "C:/Users/ADMINI~1/AppData/Local/Temp/1/vendor20160727-12668-ywfjol"

Dir.glob(path)[0]
=> "C:/Users/Administrator/AppData/Local/Temp/1/vendor20160727-12668-ywfjol"

answered Jul 26 '16 at 23:18

kit.yang

2,758
3
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But how does that help to convert arbitrary paths? – sschuberth Jul 27 '16 at 05:51
1

Kernel API call might be the perfect solution to solve this. https://github.com/mitchellh/vagrant/blob/master/lib/vagrant/util/windows_path.rb#L15 – kit.yang Jul 31 '16 at 09:57
That indeed looks like an interesting solution as Fiddle seems to be part of stdlib since Ruby 2.0. – sschuberth Jul 31 '16 at 10:14

Ruby method for convering Windows short path into long path?

1 Answers1