Dear Monks,
Is there a nice clean way to do a replace after match, sort of like this nice clean but non-working code:
#!/usr/bin/perl -w
use strict;
my %fixers=(
'amazon.com' => 'danube.com',
'ibm.com' => 'bm.com',
);
my $text = qq(
Blah <a href="http://amazon.com/foo">one</a>
<a href="http://ebay.com/foo">two</a>
);
sub tweak_links($)
{
my $text_ref = shift;
while( $$text_ref =~ m|"http://(.*?)["/]|g ) {
if( $fixers{$1} ) {
$1 = $main::fixers{$1};
}
}
}
tweak_links(\$text);
I'm looking for something that's good when most of the matches never happen, but I can zero in on the right section with a match. In my case I even know which of the replacements is most likely on a particular text block (but all of them could happen in each block.
Is there a usual way this is done?
Keywords: perl regex replacement regular expression table-driven match multiple replacements
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