Include simple text-based templating?

[cmlenz]

As Markup already provides much of the functionality needed for general-purpose templating (not just XML-based templating), it should be possible to reuse this to create a very simple text-based template engine, for those cases where you need to generate plain text, and using a package such as Cheetah may be overkill.

[cmlenz]

Template subclass that does basic text-based templating

[cmlenz]

I've attached a patch that implements a simple text-based template engine (markup.template.TextTemplate) on top of the main Markup template engine (markup.template.Template).

The class reuses a lot of functionality already in place for XML-based templating, such as interpolation and evaluation of expressions, the set of directives (although some make no sense outside of XML), and the general processing logic.

Obviously, this would need more work: for example, there's no position reporting yet.

[cmlenz]

Updated to include position info

[cmlenz]

Bugfix: don't ignore last text partition

[cboos]

Based on attachment:texttmpl.3.diff and r281, integrates TextTemplate with the TemplateLoader

[cboos]

Usage example, for  Trac:source:sandbox/markup@3698: conversion of the ticket_notify_email.txt template, plus some adaptations to the Chrome component

[cmlenz]

Basic implementation checked in in [292]. Any specific issues/shortcomings of the text templating language should be raised in separate tickets.

[cboos]

Works great for Trac, see  [trac 3730].

Forgot to mention in the commit log there that it requires r300, because of the stripped #end commands.