I am a first time poster so please be gentle.
Basically I am writing a lightweight templating application.
I want to be able to let html coders link templates together by adding a tag like: <% link_name faq_template %> and have this replaced with the appropriate a href based on a lookup of the link name "faq_template" in the database.
The output will look something like:
<a href="http://www.somedomain.com/?q_act=view&q_srn=1719">
Where 1719 is the template_id that corresponds with the faq_template -- After which mod_perl handles the rest :-)
Anyway, not to get too heavily involved in the architecture, I'm slurping up the template that contains
the <%link_name tag into $$file. I take advantage of code evaluation in my regexp
(which also makes sure all the tags are formatted the same way) and do something like the following:

========================

##BEGIN preparse 
        #makes use of experimental code evaluation regexp features in 
+perl
        my @link_names;
        $$file =~ s/<%[ ]*link_name[ ]*([^ ]*)[ ]*%>(?{push(@link_name
+s,$1);})/<% link_name $1%>/g;
        #printStruct(\@link_names); #debugging

        #now map link names to actual variables
        my $sql;
        foreach my $link_name (@link_names){
          $link_name=$dbh->quote($link_name);
          $sql="SELECT template_id FROM template_table where template_
+name=$link_name";
          #print "SQL is $sql \n";

          #if success do another regexp find and replace with real url
+ 
          #otherwise replace template tag with HTML code comment indic
+ating error

        }#end foreach

##END preparse

[download]

===========================

This works fine. The @link_names array is populated
correctly. My only concern is that code evaluation is
indicated in the docs as a very experimental thing.
Will this be deprecated in the future or should I not worry about it?

Rodney A. Hampton

In reply to Is it safe to use code evaluation regexp or will it be deprecated by Rodney_Hampton

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