Is there anyway easier than this to strip HTML from a string using Perl?
$Error_Msg =~ s|<b>||ig;
$Error_Msg =~ s|</b>||ig;
$Error_Msg =~ s|<h1>||ig;
$Error_Msg =~ s|</h1>||ig;
$Error_Msg =~ s|<br>||ig;
I would appreicate both a slimmed down regular expression, e.g. something like this:
$Error_Msg =~ s|</?[b|h1|br]>||ig;
Is there an existing Perl function that strips any/all HTML from a string, even though I only need bolds, h1 headers and br stripped?
Assuming the code is valid HTML (no stray < or > operators)
$htmlCode =~ s|<.+?>||g;
If you need to remove only bolds, h1's and br's
$htmlCode =~ s#</?(?:b|h1|br)\b.*?>##g
And you might want to consider the HTML::Strip module
From perlfaq9: How do I remove HTML from a string?
The most correct way (albeit not the fastest) is to use HTML::Parser from CPAN. Another mostly correct way is to use HTML::FormatText which not only removes HTML but also attempts to do a little simple formatting of the resulting plain text.
Many folks attempt a simple-minded regular expression approach, like s/<.*?>//g, but that fails in many cases because the tags may continue over line breaks, they may contain quoted angle-brackets, or HTML comment may be present. Plus, folks forget to convert entities--like < for example.
Here's one "simple-minded" approach, that works for most files:
#!/usr/bin/perl -p0777
s/<(?:[^>'"]*|(['"]).*?\1)*>//gs
If you want a more complete solution, see the 3-stage striphtml program in http://www.cpan.org/authors/id/T/TO/TOMC/scripts/striphtml.gz .
Here are some tricky cases that you should think about when picking a solution:
<IMG SRC = "foo.gif" ALT = "A > B">
<IMG SRC = "foo.gif"
ALT = "A > B">
<!-- <A comment> -->
<script>if (a<b && a>c)</script>
<# Just data #>
<![INCLUDE CDATA [ >>>>>>>>>>>> ]]>
If HTML comments include other tags, those solutions would also break on text like this:
<!-- This section commented out.
<B>You can't see me!</B>
-->
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