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<font color=#ffffff><% Web Applications with Apache & mod_perl %></font>
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<td bgcolor=white ><font face="verdana,helvetica" size=-1><b><nobr><font color=#993399>SYNTAX</font></nobr></b></font></td>
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<font face=verdana><font class=title size=+1 color=#555555><b>SYNTAX</b></font>
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<a href=#General>General</a>
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<a href=#Editors>Editors</a>
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<a href=#XMLSubs>XMLSubs</a>
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<a name=General></a>
<font face=verdana><font class=title size=+0 color=#555555><b>General</b></font>
<font face="courier new" size=3><pre>
</pre></font>ASP embedding syntax allows one to embed code in html in 2 simple ways.
The first is the <% xxx %> tag in which xxx is any valid perl code.
The second is <%= xxx %> where xxx is some scalar value that will
be inserted into the html directly. An easy print.
<font face="courier new" size=3><pre>
A simple asp page would look like:
<!-- sample here -->
<html>
<body>
For loop incrementing font size: <p>
<% for(1..5) { %>
<!-- iterated html text -->
<font size="<%=$_%>" > Size = <%=$_%> </font> <br>
<% } %>
</body>
</html>
<!-- end sample here -->
</pre></font>Notice that your perl code blocks can span any html. The for loop
above iterates over the html without any special syntax.</font>
<p>
<a name=XMLSubs></a>
<font face=verdana><font class=title size=+0 color=#555555><b>XMLSubs</b></font>
<font face="courier new" size=3><pre>
</pre></font>XMLSubs allows a developer to define custom handlers for
HTML & XML tags, which can extend the natural syntax
of the ASP environment. Configured like:
<font face="courier new" size=3><pre>
PerlSetVar XMLSubsMatch site:\w+
</pre></font>A simple tag like:
<font face="courier new" size=3><pre>
<site:header title="Page Title" />
</pre></font>can be constructed that could translate into:
<font face="courier new" size=3><pre>
sub site::header {
my $args = shift;
print "<html><head><title>$args->{title}</title></head>\n";
print "<body bgcolor=white>\n";
}
</pre></font>Better yet, one can use this functionality to trap
and post process embedded HTML & XML like:
<font face="courier new" size=3><pre>
<site:page title="Page Title">
... some HTML here ...
</site:page>
</pre></font>and then:
<font face="courier new" size=3><pre>
sub site::page {
my($args, $html) = @_;
&site::header($args);
$main::Response->Write($html);
$main::Response->Write("</body></html>");
}
</pre></font>Though this could be used to fully render XML
documents, it was not built for this purpose, but
to add powerful tag extensions to HTML development
environments. For full XML rendering, you ought
to try an XSLT approach, also supported by Apache::ASP.</font>
<p>
<a name=Editors></a>
<font face=verdana><font class=title size=+0 color=#555555><b>Editors</b></font>
<font face="courier new" size=3><pre>
</pre></font>As Apache::ASP supports a mixing of perl and HTML,
any editor which supports development of one or the
other would work well. The following editors are
known to work well for developing Apache::ASP web sites:
<font face="courier new" size=3><pre>
* Emacs, in perl or HTML modes. For a mmm-mode config
that mixes HTML & perl modes in a single buffer, check
out the editors/mmm-asp-perl.el file in distribution.
* Microsoft Frontpage
* Vim, special syntax support with editors/aasp.vim file in distribution.
* UltraEdit32 ( <a href=http://www.ultraedit.com/>http://www.ultraedit.com/</a> ) has syntax highlighting,
good macros and a configurable wordlist (so one can have syntax
highlighting both for Perl and HTML).
</pre></font>Please feel free to suggest your favorite development
environment for this list.</font>
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Copyright © 1998-2008,
<a href=http://www.chamas.com><font color=white>Chamas Enterprises Inc.</font></a>
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