If you're willing to invest a few minutes in learning about modules ( HTML::Parser and HTML::TokeParser come to mind -- follow the link to CPAN) rather than a few minutes banging your head against the wall figuring out how to catch corner cases with regular expressions, it will pay off greatly.
If all of the HTML is very similar and not too tricky, you can use a regexp like:
$line = s!(<img src=")[^"]+([^>]*">)!$1$newimage$2!gi;
to do your substitution. Be warned, using regular expressions on HTML is very tricky, unless you're dealing with extremely consistent HTML.
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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