ll-xist 3.17

Extensible HTML/XML generator, cross-platform templating language, Oracle utilities and various other tools

XIST provides an extensible HTML and XML generator. XIST is also a XML parser with a very simple and pythonesque tree API. Every XML element type corresponds to a Python class and these Python classes provide a conversion method to transform the XML tree (e.g. into HTML). XIST can be considered ‘object oriented XSLT’.

XIST also includes the following modules and packages:

• ll.make is an object oriented make replacement. Like make it allows you to specify dependencies between files and actions to be executed when files don’t exist or are out of date with respect to one of their sources. But unlike make you can do this in a object oriented way and targets are not only limited to files.

• ll.url provides classes for parsing and constructing RFC 2396 compliant URLs.

• ll.orasql provides utilities for working with cx_Oracle:

  • It allows calling functions and procedures with keyword arguments.

  • Query results will be put into Record objects, where database fields are accessible as object attributes.

  • The Connection class provides methods for iterating through the database metadata.

  • Importing the modules adds support for URLs with the scheme oracle to ll.url.

• ll.ul4c is compiler for a templating language with similar capabilities to Django’s templating language. UL4 templates are compiled to an internal bytecode format, which makes it possible to implement template renderers in other languages and makes the template code “secure” (i.e. template code can’t open or delete files).

• ll.astyle can be used for colored terminal output (via ANSI escape sequences).

• ll.color provides classes and functions for handling RGB color values. This includes the ability to convert between different color models (RGB, HSV, HLS) as well as to and from CSS format, and several functions for modifying and mixing colors.

• ll.misc provides several small utility functions and classes.

• ll.sisyphus provides classes for running Python scripts as cron jobs.

• ll.daemon can be used on UNIX to fork a daemon process.

• ll.xml_codec contains a complete codec for encoding and decoding XML.

• ll.nightshade can be used to serve the output of PL/SQL functions/procedures with CherryPy.

Changes in 3.17 (released 02/24/2011)

• The UL4 function repr now handles all instances of collections.Mapping and collections.Sequence too.

• The spacer pixel px/spc.gif and the UL4 Javascript support library ul4.js will now be installed alongside the Python modules (in ll.xist.data).

• The Java source code produced by ll.ul.Template.javasource will now contain register declarations only for the registers that are actually used.

• misc.javastring has been renamed to misc.javaexpr can can now produce the Java sourcecode for more types.

• The UL4 method isoformat now omits the time part if it is 00:00:00.

• The UL4 function repr now produces a valid UL4 date literal for date objects.

• The UL4 method format is now a function instead.

• The tests for UL4 now test the Java implementation too.