Generic file name validation code?

[harry]

I need to validate a file name but it has to work on Windows & Unix!

Does anybody know of java code that does this?

thanks in advance

harry

 

[Roedy Green]

Does anybody know of java code that does this?

If you limited the name to A-Z a-z 0-9 . it would work on anything
without a tight length limit anything.

 

[harryajh]

If you limited the name to A-Z a-z 0-9 . it would work on anything
without a tight length limit anything.

Thanks Roedy, this seems to do the job (forgot to say file name must
end with "con")

Pattern p = Pattern.compile("([A-Z]|[a-z]|[0-9])+.con");

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

If you limited the name to A-Z a-z 0-9 . it would work on anything
without a tight length limit anything.

Thanks Roedy, this seems to do the job (forgot to say file name must
end with "con")

> Pattern p = Pattern.compile("([A-Z]|[a-z]|[0-9])+.con");

That can be abbreviated to:

Pattern p = Pattern.compile("([A-Za-z0-9])+.con");

Arne

 

[Eric Sosman]

quoted or
indirectly quoted someone who said :
Does anybody know of java code that does this?
If you limited the name to A-Z a-z 0-9 . it would work on anything
without a tight length limit anything.

Thanks Roedy, this seems to do the job (forgot to say file name must
end with "con")

Pattern p = Pattern.compile("([A-Z]|[a-z]|[0-9])+.con");

That can be abbreviated to:

Pattern p = Pattern.compile("([A-Za-z0-9])+.con");

Better quote that . character ... Also, the ( ) can be
eliminated if the O.P. doesn't need the capturing group.

 

[Stefan Ram]

If you limited the name to A-Z a-z 0-9 . it would work on anything
without a tight length limit anything.

The library »ram.jar« contains code to convert any
Unicode-Text (including surrogate pairs) into a text
consisting only of uppercase letters and numbers
that can be used as a file name under most
file systems as long as it is short enough.


public final class Main
{ public static void main( final String[] args )
{
final java.lang.String text =
"¿Aren't Kafka's Schloß and Æsops oeuvres often naïve?";

final java.lang.String product =
de.dclj.ram.notation.filode.Text.sourceText( text );

java.lang.System.out.println( product ); }}


XBFZYARENXNTXGYKAFKAXNSXGYSCHLOXDFZXGANDXGXC6ZSOPSXGOEUVRESXGOFTENXGNAXEFZVEXK


The encoding used is called »Filode« and being described
on the Filode homepage

http://www.purl.org/stefan_ram/pub/filode

The ram.jar homepage:

http://www.purl.org/stefan_ram/pub/ram-jar

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

Pattern p = Pattern.compile("([A-Z]|[a-z]|[0-9])+.con");

That can be abbreviated to:

Pattern p = Pattern.compile("([A-Za-z0-9])+.con");

Better quote that . character ...

Yes.

Arne