[mac?] Meta_File:exists -- RawPointer or nil

[Stephan Wittwer]

Hi list,

Can someone explain this?
2 files created, one in cwd, the other in user app support dir.
The latter is not recognized by Meta_File:exists.

Grateful for any hint !
Stephan



(
~p1 = "testfile";
        // escape space char (mac path)
~p2 = Platform.userAppSupportDir.escapeChar($ ) +/+ ~p1;
        // create two empty files
("touch" + ~p1 + ~p2).systemCmd;
)

        // line by line
File.exists(~p1); // true
File.exists(~p2); // false

~p1.pathMatch;
~p2.pathMatch; // showing up here

        // the difference:
File.use(~p1, "r", { |f| f.dump }); // fileptr : RawPointer ...
File.use(~p2, "r", { |f| f.dump }); // fileptr : nil

        // permissions look the same (to me)
("ls -l " ++ ~p1.dirname).unixCmd;
("ls -l " ++ ~p2.dirname).unixCmd;



        // clean up
("rm" + ~p1 + ~p2).systemCmd

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[Stephan Wittwer]

To answer my own question:

> Hi list,
>
> Can someone explain this?
> 2 files created, one in cwd, the other in user app support dir.
> The latter is not recognized by Meta_File:exists.


The problem was escaping the blank in the path name.

File class doesn't like

Platform.userAppSupportDir.escapeChar($ )

wheras unixCmd et al need the escaping (for the Mac path name) and,  
third variant, pathMatch doesn't care if the space char is escaped or  
not.


Although it appears slightly cumbersome to me to need different string  
versions for the same path in a different context, I'm still happy  
now, having found an explanation.

>
>
>
> (
> ~p1 = "testfile";
> // escape space char (mac path)
> ~p2 = Platform.userAppSupportDir.escapeChar($ ) +/+ ~p1;
> // create two empty files
> ("touch" + ~p1 + ~p2).systemCmd;
> )
>
> // line by line
> File.exists(~p1); // true
> File.exists(~p2); // false
>
> ~p1.pathMatch;
> ~p2.pathMatch; // showing up here
>
> // the difference:
> File.use(~p1, "r", { |f| f.dump }); // fileptr : RawPointer ...
> File.use(~p2, "r", { |f| f.dump }); // fileptr : nil
>
> // permissions look the same (to me)
> ("ls -l " ++ ~p1.dirname).unixCmd;
> ("ls -l " ++ ~p2.dirname).unixCmd;
>
>
>
> // clean up
> ("rm" + ~p1 + ~p2).systemCmd
>

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