fancy
experimental features? ;-)
#!/usr/bin/perl -l
use strict;
use warnings;
my @str = split /\n/, <<'HTML';
<tr class="meld"><th>Security Code Matched</th><td>foo</td></tr>
<tr><th>Security Code Matched</th><td>N/A</td></tr>
<tr><th class="foo">Security Code Matched</th><td>N/A</td></tr>
<tr><th>Security Code Matched</th><td>10!</td></tr>
<tr><td>Security Code Matched</td><td class="val">N/A</td></tr>
HTML
for (@str) {
if ( m{
\bSecurity\ Code\ Matched\b
(.*?)</tr>
(?(?{ index($^N, 'N/A') < 0 })!)
}xsg
) {
print "[[$_]]";
}
}
output:
[[<tr><th>Security Code Matched</th><td>N/A</td></tr>]]
[[<tr><th class="foo">Security Code Matched</th><td>N/A</td></tr>]]
[[<tr><td>Security Code Matched</td><td class="val">N/A</td></tr>]]
i wouldn't use it at home, though ;-)