OpenEuphoria

Re: random filenames

• Posted by jacques deschênes <desja at globetrotter.net> Mar 19, 2007
• 521 views

Hi Hayden,
the reason for unprintable character is that rand(125)+1 generate values between
1 and 126 and codes below 32 are unprintable
replace rand(125)+1 by   rand(93) + 32
but beware that some characters like '\' are forbidden in windows filenames
so a better choice could be rand(26)+'a' (limit to lower case letters)
But all this is not 100% collision proof.

regards,
Jacques D.

Hayden McKay wrote:
> 
> Doe's anyone know how to implement a small runtime cross-platform random
> filename
> generator?
> 
> I'm currently just adding the '~' char to the filename
> ie: filename = '~' & filename
> 
> I've written a small template but it will return unprintable chars;
> 
> }}}
<eucode>
> function TempFile(sequence mode)
>     sequence s
> 
>     s = repeat(-1, 8)
>     for j = 1 to 8 do            -- DOS filename compatablity
>         s[j] = rand(125 + 1)
>     end for
> 
>     s &= ".TMP"
> 
>     return OpenFile(s, mode)
> 
> end function
> </eucode>
{{{

> 
> Maybee a 'set_rand()' might fix?