The problem is that what is or is not an IP address
really depends on the file semantics,
not just on what an IP address "looks like."
A simple regex match for dotted-quad "IP addresses"
in arbitrary text will give you false positives.
In the HTML source for one site I maintain, for example,
such a regex would
match the following:
1.41.1.1
Is it an IP address?
Nope, it's an RCS version number,
and blindly
assuming it's an IP address
would be wrong at best
and dangerous at worst.
That said,
@ip_addrs = m/{regex to match IP}/g;
will select only the "IP address" texts from $_
for whatever regex you choose,
without the danger of relying on $1. | [reply]
[d/l]
[select] |
Thank you, that is exactly what I needed.
And, yes, I prompt the user of the script to ensure the strings it has chosen from an html file are indeed ones that currently contain IP addresses, and are ones they would like updated in the future :-)
ie: I'm not relying on my shoddy coding alone.
| [reply] |