Greetings, Monks
I frequently have to scan files for lines matching various patterns and extract data from those lines. I use code like
my $re_dn = qr{^(\w+) (\d+) (\d{2}:\d{2}:\d{2}) .*: eth(\d): link down
+};
my $re_dn = qr{^(\w+) (\d+) (\d{2}:\d{2}:\d{2}) .*: eth(\d): link up,
+(\d+)Mbps, ([^,]+), lpa (\w+)};
while(<>) {
if ( /$qr_dn/ ) {
my( $mon, $day, $time, $interface ) = ($1,$2,$3,$4);
# process
next;
}
if ( /$qr_up/ ) {
my( $mon, $day, $time, $interface, $rate, $duplex, $lpa )
+= ($1,$2,$3,$4,$5,$6,$7);
# process
next;
}
}
but I hate constructs like
($1,$2,$3,$4,$5,$6,$7)
I'd love to know a more elegant idiom. Will someone enlighten me?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.