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Re: Check for string in array and substitue

by almut (Canon)
on Jun 04, 2009 at 09:23 UTC ( [id://768365]=note: print w/replies, xml ) Need Help??

in reply to Check for string in array and substitue

You could try something like this, i.e. put your not-to-be-replaced entites into a hash for easy lookup:

#!/usr/bin/perl my %entities = map { $_ => 1 } qw(&amp; &quot; &lt; &gt; &nbsp; &copy; +); while (my $line = <DATA>) { $line =~ s/(&(\w+?;)?)/exists $entities{$1} ? $1 : "&amp;$2"/eg; print $line; } __DATA__ foo &amp; &quot; bar &blah; &foo baz & ... TEST&TEST;A&E&an &nbsp; HTML--- &nbsp; string - &lt; &copy; TVS&gt;

Would output:

foo &amp; &quot; bar &amp;blah; &amp;foo baz &amp; ... TEST&amp;TEST;A&amp;E&amp;an &nbsp; HTML--- &nbsp; string - &lt; &copy +; TVS&gt;

(note that if you run this under strictures, it'll complain "Use of uninitialized value in concatenation" in case $2 is empty... I'll leave this as an exercise for you to fix :)

Update: I hadn't followed your other thread... so looking at wfsp's solution there, I'd say just use that instead and be happy :)

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