Re: Problems with lposix on win32

[Chris Marrin <chris@...>]

Edgar Toernig wrote:
> Chris Marrin wrote:
>
> > [...] so here is the current proposed list:
> >
> > errno()		return the last error string,number
>
>
> errno is pointless.  Unlike C, Lua has multiple return values.
> And I would suggest to use strings like "ENOTEMPTY" instead of
> errno numbers.  The numbers are totally useless.

It's no more pointless than in C, where you can compare it against 
constants for useful results. But I agree that Lua does not have 
switch() or enums making it difficult to use integer return values. I 
will cobble together an initial (small) set of string return values. I 
am already returning multiple values (string,number) because that is 
what lposix did. The string is the strerror() string. Perhaps a better 
approach would be to return a string value for the error number along 
with a numeric version and add a separate strerror() function. This 
would allow lookup of error codes that do not come from these functions. 
If errno is a value for which I don't have a symbolic constant, I would 
return nil for the string and still return the number. That gives us 
fully general functionality.

How does that sound?

> > mkdir(path)		create a directory at the passed path
>
>
> mkdir(path [, mode])

Sounds good. Done. But mode will have no effect on win32 because mkdir() 
on that platform does not take a mode param and I don't think win32 
obeys the umask when creating directories. Anyone have info to the contrary?

> Ciao, ET.
>
>
> PS: I don't like the name osex.  I'd simply put them into os.

I don't think that's possible using the 5.1 package model. I suppose it 
is possible to make:

    require "osex"

add things to the 'os' table, assuming it exists. But that seems, at 
least, poor practice.

But I did just notice that this reads like "o-sex", so maybe "exos" 
would be better? :-)

--
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