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Template Toolkit Version 2.22 21st July 2009 Copyright (C) 1996-2009 Andy Wardley. All Rights Reserved This is free software; you can redistribute it and/or modify it under the same terms as Perl itself. INSTALLATION ------------ If you have the CPAN module installed then you can install the Template Toolkit from the command line like so: $ cpan Template Please see the separate INSTALL file for further information on installing the Template Toolkit, including what to do if you don't have the CPAN module installed, and/or installation on MS Windows. DESCRIPTION ----------- The Template Toolkit is a collection of modules which implement a fast, flexible, powerful and extensible template processing system. It was originally designed and remains primarily useful for generating dynamic web content, but it can be used equally well for processing any other kind of text based documents: HTML, XML, POD, PostScript, LaTeX, and so on. It can be used as a stand-alone Perl module or embedded within an Apache/mod_perl server for generating highly configurable dynamic web content. A number of Perl scripts are also provided which can greatly simplify the process of creating and managing static web content and other offline document systems. WHAT'S NEW? ----------- Version 2.22 is mostly a bug fixing release. The XS Stash now works with utf8 data. Tests that were failing on Win32 platforms have been fixed. Pod coverage and quality tests have been disabled except for release testing. The Autoformat plugin has been moved into a separate distribution. Version 2.21 featured a complete clean-out of all the old HTML documentation, examples, libraries and other cruft that was way out of date and badly unloved. A new version of the HTML documentation is available for download from http://tt2.org/download/index.html#html_docs. v2.21 also fixes a memory leak in the XS Stash. Version 2.21 also adds the STRICT option which reports the use of undefined variable values. The ANYCASE option has been improved so that you can write things like 'data.last' without the 'last' bit being interpreted as the LAST keyword. The xml filter is also new, providing a slightly more rigourous version of the html filter for use in XML documents. Version 2.20 fixed all known bugs. It also added the Scalar and Assert plugins. The HTML documentation, examples, libraries and other bits and pieces are still provided with the distribution, but are no longer installed by the Makefile.PL. If you want them (and very few people do, it seems), then you'll need to dig them out of the distribution by yourself (or uncomment the commented-out lines in Makefile.PL that handle the installation). This has been done in an effort to simplify the installation process. All of the HTML documentation is available online at http://tt2.org/ Version 2.19 fixed some minor bugs in both Perl and XS versions of the Template Stash, and fixed a problem with a test in the test suite failing under Win32. It also added the url filter as a version of what the uri filter used to do before we fixed it to do the right thing. Version 2.18 fixes a number of minor bugs. It also includes a modification to the parser grammar so that you can write expressions as arguments to subroutine, method or vmethod calls. Versions 2.17 and 2.16 were interim releases by Adam Kennedy who took care of some installation problems on Mac OSX while Andy was busy elsewhere. Version 2.15 is a major maintenance release. It applies all outstanding patches and closes all open bugs listed on http://rt.cpan.org/ It includes: * XS Stash: enhancements include support for tied hashes/arrays and "fallback" methods on objects (e.g. accessing hash and list items and calling virtual methods) * Virtual Methods: added the scalar.remove, scalar.substr, hash.delete, hash.items, hash.pairs, list.import and list.hash virtual methods. Added support for backreferences to scalar.replace and other improvements to list.push, list.unshift, list.hash, hash.list * Plugins: Added Math plugin, Bug fixes and enhancements to File, Image, URL and String plugins. Moved DBI, XML and GD plugins into separate distributions. * Numerous other bug fixes, enhancements, documentation updates, all described in detail in the Changes file. More significant is what's not in version 2.15. The DBI plugin has been moved into a separate Template-DBI distribution, the GD plugins into Template-GD, the XML plugins into Template-XML, and the Latex filters into Template-Latex. This has been done in an effort to make the Template Toolkit core distribution smaller, cleaner and easier to configure and install. Version 2.14 added Unicode support to TT, a full set of command line options for tpage, the 'caller' and 'callers' items to each template component, some enhancements to the XML::Simple plugin, and a number of minor bug fixes. See the Changes file for further details of the changes in these and earlier releases. GENERAL FEATURES ---------------- Some of the key features of the Template Toolkit are listed below. See the documentation for further detail. * simple but powerful template language * promotes a clear separation between application functionality and presentation elements * variable substitution allows binding to any Perl data types (scalars, hashes, lists, subs, objects) * conditional blocks (IF/UNLESS/ELSIF/ELSE, SWITCH/CASE) * loops and iterators (FOREACH, WHILE) * file/template inclusion (INSERT, INCLUDE, PROCESS, WRAPPER) * definition of local template components (BLOCK) * post-processing filters (FILTER) * plugin module architecture for easy extensibility (USE) * embedded Perl can be optionally enabled (PERL/RAWPERL) * full exception handling (TRY/THROW/CATCH/FINAL) * user-defined macros (MACRO) * definition of template metadata (META) * virtual methods for complex data types (e.g. list.size, hash.keys, etc.) * numerous configuration options * modular OO architecture allows extensive customisation * fast LALR(1) parser modules compiles templates according to a YACC-like grammar. * templates compiled to Perl code for efficient runtime execution * in-memory and on-disk caching of compiled templates * simple front end module (Template.pm) for ease of use * numerous plugin modules: CGI, DBI, XML, URL, Date, Table, etc * standard filters for html, case folding, regex search and replace, etc. DOCUMENTATION ------------- The Template Toolkit is provided with enough documentation to keep all but the most voracious reader happy for quite some time. The 'Changes' file in the distribution directory documents all visible changes between versions of the Template Toolkit. See the section 'VERSION COMPATABILITY' below for further details. The 'TODO' file, also in the distribution directory, lists known bugs, planned enhancements and possible new features for future versions. The 'INSTALL' file covers the configuration and installation process. The rest of the documentation is distributed in Pod format. The Pod pages are installed when you 'make install' and can be viewed using 'perldoc', e.g. perldoc Template If you're using a Unix based system then the pages should also be converted to manpages suring the 'make install'. Thus, you can also: man Template (the man pages shouldn't have any problems relating to older versions) The documentation is also available in HTML format at the TT web site: http://tt2.org/docs/ The documentation is now split into several sections. The 'Template' page is now much shorter, containing information relating to the specifics of using the Template module, and a brief summary of everything else. Information relating more generally to the Template Toolkit, features, syntax of the template language, plugins and so forth, has been split up into a number of Template::Manual::* pages. Template::Manual provides the index for the manual. perldoc Template::Manual Individual sections can be viewed as, for example, perldoc Template::Manual::Syntax perldoc Template::Manual::Directives perldoc Template::Manual::Plugins The Template::Tutorial provides an index to the tutorial documents. There are currently 2 tutorials, on generating web content, and on creating and using data files. perldoc Template::Tutorial perldoc Template::Tutorial::Web perldoc Template::Tutorial::Datafile Each of the various modules that comprise the Template Toolkit has its own associated documention. The 'Template::Modules' manpage lists these modules along with a brief description of their functions. perldoc Template::Modules See the individual pages for further detail: perldoc Template::Context perldoc Template::Parser perldoc Template::Provider If you're interested in the internals of the Template Toolkit and want to know more about how it all works, then you might like to have a look at the following: perldoc Template::Manual::Internals This document also contains important information for people wishing to hack on the Template Toolkit. The final bit of good news is that there is now a FAQ for the Template Toolkit. perldoc Template::FAQ It's now got a few question in it, and better still, some answers! Further contributions welcome. Most of the documentation is stable and reliable. Where it's not then it's usually marked as such. In particular, the documentation for the internals (Template::Manual::Internals) and FAQ (Template::FAQ) are perpetually under construction. SUPPORT ------- The Template Toolkit mailing list provides a forum for discussing issues relating to the use and abuse of the Template Toolkit. There are a number of knowledgeable and helpful individuals who frequent the list (including the author) who can often offer help or suggestions. Please respect their time and patience by checking the documentation and/or mailing list archives before asking questions that may already have been answered. To subscribe to the mailing list, send an email to: email@example.com with the message 'subscribe' in the body. You can also use the web interface to subscribe or browse the archives: http://mail.template-toolkit.org/mailman/listinfo/templates A low-volume, moderated mailing list exists for announcements about new releases of the Template Toolkit and related products. To subscribe, send an email to: firstname.lastname@example.org with the message 'subscribe' in the body. A web interface also exists for subscription and browsing the archives: http://mail.template-toolkit.org/mailman/listinfo/templates-announce For information about commercial support and consultancy for the Template Toolkit, please contact the author. AUTHOR ------ The Template Toolkit was written by Andy Wardley <email@example.com> with the invaluable assistance and contributions from many other people. See Template::Manual::Credits for details. COPYRIGHT --------- Copyright (C) 1996-2009 Andy Wardley. All Rights Reserved. This is free software; you can redistribute it and/or modify it under the same terms as Perl itself.