Hopefully a more complete and self contained example for haukex explanation:
#!/usr/bin/env perl
use v5.10;
use strict;
use warnings;
use Math::BigInt;
use constant offset => Math::BigInt->new('0x500000000');
while (my $line1 = <DATA>) {
# if addr 0x10000 written like 0x010000 then
# 0x(?:[[:xdigit:]]{2})+)\b may validate memory address
my ($addr) = $line1 =~ /addr:(0x[[:xdigit:]]+)\b/;
# print "addr is $addr\n";
if (defined $addr) {
my $new_addr = sprintf "0x%x", hex($addr) + offset;
if ($line1 =~ s/ \baddr: \K $addr (?=\s+qospri:)
/$new_addr/x
) {
print $line1;
}
else {
print STDERR "unchanged\n";
print $line1;
}
}
}
__DATA__
chn:req mon:orig cmd:SDP_CMD_WRSIZEDFULL tag:0x3b9aca01 addr:0xdf7780
+qospri:0 len:0xf
Update: requirement for even number of digits removed thanks to explanation from AnamalousMonk.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|