Original HTML::Template is written by Sam Tregar, email@example.com
with contributions of many people mentioned there.
Their efforts caused HTML::Template to be mature html tempate engine
which separate perl code and html design.
Yet powerful, HTML::Template is slow, especially if mod_perl isnt
available or in case of disk usage and memory limitations.
HTML::Template::Pro is a fast lightweight C/Perl+XS reimplementation
of HTML::Template (as of 2.9) and HTML::Template::Expr (as of 0.0.7).
It is not intended to be a complete replacement,
but to be a fast implementation of HTML::Template if you dont need
querying, the extended facility of HTML::Template.
Designed for heavy upload, resource limitations, abcence of mod_perl.
HTML::Template::Pro has complete support of filters and HTML::Template::Exprs
tag EXPR=<expression>, including user-defined functions and
construction <TMPL_INCLUDE EXPR=...>.
HTML::Template work cycle uses 2 steps. First, it loads and parse template.
Then it accepts param() calls until you call output().
output() is its second phase where it produces a page from the parsed tree
of template, obtained in the 1st step.
HTML::Template::Pro loads, parse and outputs template on fly,
when you call $tmpl->output(), in one pass. The corresponding code is
written in C and glued to Perl using Perl+XS. As a result,
comparing to HTML::Template in ordinary calls, it runs
10-25 times faster. Comparing to HTML::Template with all caching enabled
under mod_perl, it still 1-3 times faster. At that HTML::Template caching
requires considerable amount of memory (per process, shareable, or on disk)
to be permanently filled with parsed trees, whereas HTML::Template::Pro
dont consumes memory for caches and use mmap() for reading templates on disk.
Introduction to HTML::Template and syntax of template files is described
Perl interface of HTML::Template and HTML::Template::Pro is described
Copyright (C) 2005-2009 by I. Yu. Vlasenko.
Pieces of code in Pro.pm and documentation of HTML::Template are
copyright (C) 2000-2002 Sam Tregar (firstname.lastname@example.org)
The template syntax, interface conventions and a large piece of documentation
of HTML::Template::Pro are based on CPAN module HTML::Template
by Sam Tregar, email@example.com.
This library is free software; you can redistribute it and/or modify it under
either the LGPL2+ or under the same terms as Perl itself, either Perl version
5.8.4 or, at your option, any later version of Perl 5 you may have available.