Mongers,

I want to take data from two different inputs and then I want to apply a common regex to extract hex digits from it; the problem is that one device spits the hex values as 0x and the other data doesn't use the 0x, which makes my regex looks a bit ugly

My idea is to have something like this:

# Both connections are telnet based
sub getDataFromDevice {
# login to the device
# define the read/write commands
     &dumpData($conn, \%cmds)
}
sub getDataFromJtag {
# login to the device
# define the read/write commands
    &dumpData($conn, \%cmds)
}

sub dumpData {
    my $conn = shift;
    my $cmds = shift;

    my $addr = qr/^\s*0?x?[[:xdigit:]]{8}:\s+0?x?([[:xdigit:]]{8}).*$/
+;

    @output = $conn->cmd("$cmd->{read} 0xfeedbeef");
    push @obuf, (grep {s/$addr/$1/} @out);


}

[download]

This is what the two different commands output looks like

% read 0xfeedbeef

f80e205c: 30000000  ........
805306368

[download]

ppc8641-A[0,h] % mr 0xfeedbeef
0xf80e2044: 0x00100000   ........

[download]

The main issue I have is the 0?x? format in the $addr scalar looks horrible, so I was thinking to use grouping like (0x)? but the problem is this will break the substitution so I am wondering if there another way to write (0x)? without storing the data in $1

Thanks for your wisdom

In reply to Regex grouping without storing by gmoque

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