How can get the volume of a specified folder directly using JSL?

[#1]

For example, this folder:

C:\Windows

Thanks!

[#2]

I don't believe it can be derived directly.  Here is what I cam up with

Names Default To Here( 1 );
theList = Files In Directory( "C:\Windows" );
totSize = 0;
For Each( {theFile}, theList,
	totSize = Sum( totSize, File Size( "C:\Windows\" || theFile ) )
);
Show( totSize );

But it doesn't appear to be accurate

[#3]

Thank Jim!

[#4]

• Yes, this result is obviously incorrect.

[#5]

It might be better to perform this type of check using Run Program and some command with it.

With Files In Directory you will have to add recursive(1) (or perform a loop yourself, to get files inside folders).

Names Default To Here(1);
lookup_dir = "C:\Windows\";
file_list = Files In Directory(lookup_dir, recursive(1));
file_sizes = Transform Each({cur_file}, file_list,
	File Size(lookup_dir || cur_file)
);
sum(file_sizes);

https://www.jmp.com/support/help/en/17.0/#page/jmp/file-functions.shtml?os=win&source=application#ww...

You can also use Multiple File Import for this Directory Tree: Explore Space Used by Folders 

[#6]

As @jthi suggested, here's a way to do it using Run Program / Powershell (from JMP, of course).

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Names Default To Here( 1 );
op = {};
rp = Run Program(
	Executable( "powershell.exe" ),
	Options( "ls c:\temp\ -r | measure -sum Length" ), //Replace c:\temp\ with your folder
	ReadFunction( Function( {this}, Insert Into( op, this << read ) ) )
);

for each ({i}, op,
	if (word(1, i) == "Sum", totalsize = num(regex (i, "([0-9]+)")))
);

show (totalsize);