Bill Platt wrote:
> Hello,
>
> I have included a section of code below
> that is driving me nuts.
>
> If I don't run the Substitution operations,
> then I can successfully extract the URL
> and the imbedded anchor text from
> $parsed_html.
>
> Once I include the Substitution operations,
> then I cannot extract the same results.
>
> Even though the output text looks theoretically
> correct, I cannot see why any combination of the
> Substitution operation breaks my code.
>
> Can you offer any suggestions to me?
>
>
>
> if($parsed_html =~ m/href/)
> {
>
> $parsed_html =~ s/\s+/ /gs;
> $parsed_html =~ s/>/">/gs;
The above could cause problems later.
> $parsed_html =~ s/=http/="http/gis;
> $parsed_html =~ s/"+/"/gs;
> $parsed_html =~ s/'"/'/gs;
> $_ = "$parsed_html";
>
> @urlmatch = (@urlmatch,$2,$4) while m{
> < \s*
> A \s+ HREF \s* = \s* (["']) (.*?) (["'])
> \s* > \s* (.*?) \s* <\/a \s* >
There is a " before the last > that you will need to account for.
> }gsix;
>
> print "0=$urlmatch[0]<BR>1=$urlmatch[1]<BR>2=$urlmatch[2]<BR>";
> print "3=$urlmatch[3]<BR>4=$urlmatch[4]<BR>5=$urlmatch[5]<BR>";
>
> print "s0=$0<BR>s1=$1<BR>s2=$2<BR>s3=$3<BR>s4=$4<BR>s5=$5<BR>";
> print "$_<BR><HR>$parsed_html<BR><HR>";
>
> }
my @urlmatch;
my $parsed_html =
"<A HREF=http://www.fubar.com/>URL</A>\n<A
HREF=http://www.fubar2.com/>URL2</A>\n";
if ($parsed_html =~ m/href/i) {
$parsed_html =~ s/\s+/ /gs;
$parsed_html =~ s/>/">/gs;
$parsed_html =~ s/=http/="http/gis;
$parsed_html =~ s/"+/"/gs;
$parsed_html =~ s/'"/'/gs;
$_ = $parsed_html;
print "\$_=$_\n";
while ( # note I added "? to the last part of the RE ------v (or just
drop the \s*> part)
/<\s*A\s+HREF\s*=\s*(["'])(.*?)(["'])\s*>\s*([^<]*)\s*<\/a"*\s*>/gis)
{
# print $n variables out:
for (1..9) {
eval "print \"<BR>$_=', \$$_, '\n\" if defined \$$_";
}
}
}
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