Syslinux - Aug 2004 - (hpa-tftpd] remapping with regular expression problem

Hi mailing list,
I'm working on PXE booting a BartPE (=Windows XP) system from a server
running
hpa tftpd.
In the initialization phase the files are requested from the boot server by
TFTP, later
the transfer is switched to SMB.
Most of the problems during this tftp phase can be solved with the  remapping
feature
quite nicely like:
*converting filenames into absolute paths
*convert backslashes to slashes

One problem missing is to alter the case of the requested files. As the drivers
in XP
are using a wild combination of upper and lower cases I prefer to convert the 
complete BartPE directory structure to lower case and force hpa-tftpd to remap
all
filenames in the BartPE directory only (for example /tftpboot/winpe) to lower
case.

And that's where I'm stuck:
To avoid side effects to other tftp downloads from the same server I'd like
to limit the
case altering only to filenames containing '/winpe/'.
So I'm looking for a way to exit with the success the reg. ex ruleset, if
'/winpe/' is
__not__ in the filename.

Thanks for your input
Regards
  Bernd

rg	\\		/		# Convert backslashes to slashes
r	^[^/]		/tftpboot/\0	# Convert non-absolute files
r       ^/winpe/	/tftpboot/winpe/# Convert relative paths to their absolute
position

#exit (with success) if the requested file not from /winpe/
#not working yet...
#ei	/winpe/				# exit ruling if not /winpe/ in the filename

#convert all file and pathnames to lower case
#not elegant, but working ...
rg	A		a		# lower case
rg	B		b		# lower case
rg	C		c		# lower case
rg	D		d		# lower case
rg	E		e		# lower case
rg	F		f		# lower case
rg	G		g		# lower case
rg	H		h		# lower case
rg	I		i		# lower case
rg	J		j		# lower case
rg	K		k		# lower case
rg	L		l		# lower case
rg	M		m		# lower case
rg	N		n		# lower case
rg	O		o		# lower case
rg	P		p		# lower case
rg	Q		q		# lower case
rg	R		r		# lower case
rg	S		s		# lower case
rg	T		t		# lower case
rg	U		u		# lower case
rg	V		v		# lower case
rg	W		w		# lower case
rg	X		x		# lower case
rg	Y		y		# lower case
rg	Z		z		# lower case

G. Nau wrote:
> 
> And that's where I'm stuck:
> To avoid side effects to other tftp downloads from the same server I'd
like to limit the
> case altering only to filenames containing '/winpe/'.
> So I'm looking for a way to exit with the success the reg. ex ruleset,
if '/winpe/' is
> __not__ in the filename.
> 
I think you can do this by doing:

rg	(/winpe/.*)A	\1a
rg	(/winpe/.*)B	\1b

... etc ...

but yes, it's hideously ugly.  I'll see what I can do to make this
cleaner.

	-hpa