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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Yes, Windows does not have a comparable attribute. However, I
can’t figure out how MRI <b>running on Windows</b> implements this since I am
getting a different behavior than what other folks are. IronRuby uses the “.exe”
extension as a sort of “executable bit”. Don’t know what MRI on Windows does
though. Like I said before, it always returns false for all file extensions for
me. It always returns true for all file extensions for Jim, Tomas and others. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>We need to try to figure out what MRI does, why MRI might be
behaving differently for me, and then use the same logic in IronRuby. Does MRI
honor PATHEXT?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Shri<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ironruby-core-bounces@rubyforge.org
[mailto:ironruby-core-bounces@rubyforge.org] <b>On Behalf Of </b>Jim Deville<br>
<b>Sent:</b> Friday, April 03, 2009 2:52 PM<br>
<b>To:</b> ironruby-core@rubyforge.org<br>
<b>Subject:</b> Re: [Ironruby-core] FW: File.executable? always returns false
on Windows machine<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>We should probably return true if the extension is in PATHEXT.
This should return true for EXE,COM, CMD, BAT, PS1 (if you have Powershell). It
would be nice if we could inspect whatever assoc touches, so that if I add an
assoc and filetype for RB, it becomes executable.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>JD<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ironruby-core-bounces@rubyforge.org
[mailto:ironruby-core-bounces@rubyforge.org] <b>On Behalf Of </b>Michael
Letterle<br>
<b>Sent:</b> Friday, April 03, 2009 12:04 PM<br>
<b>To:</b> ironruby-core@rubyforge.org<br>
<b>Subject:</b> Re: [Ironruby-core] FW: File.executable? always returns false
on Windows machine<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>On *nix systems it would return
true if the executable bit is set and false if it's not. Windows doesn't
really have a comparable attribute since files are "categorized" based
on extension, hence .exe acting as a sort of "executable bit".<o:p></o:p></p>
<div>
<p class=MsoNormal>On Fri, Apr 3, 2009 at 1:36 PM, Shri Borde <<a
href="mailto:Shri.Borde@microsoft.com">Shri.Borde@microsoft.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p><span style='color:#1F497D'>Anyone know what File.executable? is supposed to
do? For me, it always returns false. For Jim, Tomas and others, it always
returns true no matter what the file extension is. Any idea why we might be
getting different results?</span><o:p></o:p></p>
<p><span style='color:#1F497D'> </span><o:p></o:p></p>
<p><span style='color:#1F497D'>FWIW, the current IronRuby implementation
returns true if the file extension is “.exe”.</span><o:p></o:p></p>
<p><span style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<p><span style='color:#1F497D'>Thanks,</span><o:p></o:p></p>
<p><span style='color:#1F497D'>Shri</span><o:p></o:p></p>
</div>
<p><span style='color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p><b><span style='font-size:10.0pt'>From:</span></b><span style='font-size:
10.0pt'> Shri Borde <br>
<b>Sent:</b> Thursday, April 02, 2009 3:59 PM<br>
<b>To:</b> <a href="mailto:ruby-core@ruby-lang.org" target="_blank">ruby-core@ruby-lang.org</a><br>
<b>Subject:</b> File.executable? always returns false on Windows machine</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p> <o:p></o:p></p>
<p>On my machine, File.executable? is always returning false. I have tried
1.8p27. I am running on a Windows Vista x86 machine. The file system is NTFS. I
can’t think of anything unusual about my machine. <o:p></o:p></p>
<p> <o:p></o:p></p>
<p>What are the semantic supposed to be? Most of the people I have asked get a
value of true for all of the statements below, even for the File.executable? on
the ttf file.<o:p></o:p></p>
<p> <o:p></o:p></p>
<p style='margin-left:.5in'>puts
File.exists?("C:/windows/fonts/wingding.ttf")<o:p></o:p></p>
<p style='margin-left:.5in'>puts
File.readable?("C:/windows/fonts/wingding.ttf")<o:p></o:p></p>
<p style='margin-left:.5in'>puts
File.executable?("C:/windows/fonts/wingding.ttf") # Prints false only
for me<o:p></o:p></p>
<p style='margin-left:.5in'> <o:p></o:p></p>
<p style='margin-left:.5in'>puts
File.exists?("C:/windows/notepad.exe")<o:p></o:p></p>
<p style='margin-left:.5in'>puts
File.readable?("C:/windows/notepad.exe")<o:p></o:p></p>
<p style='margin-left:.5in'>puts
File.executable?("C:/windows/notepad.exe") # Prints false only for me<o:p></o:p></p>
<p> <o:p></o:p></p>
<p>With the 1.9 binaries, File.executable? returns true only if the file
extensions is something like .exe. Again, it always returns true for the people
I have asked.<o:p></o:p></p>
<p> <o:p></o:p></p>
<p>Thanks,<o:p></o:p></p>
<p>Shri<o:p></o:p></p>
<p> <o:p></o:p></p>
</div>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
_______________________________________________<br>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<br clear=all>
<br>
-- <br>
Michael Letterle<br>
IronRuby MVP<br>
<a href="http://blog.prokrams.com">http://blog.prokrams.com</a><o:p></o:p></p>
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