This is an old revision of the document!


Lynus Vaz: Enhanced scripting language

Project Plan

gPXE currently features a limited capability command language. A more powerful scripting language would be useful to users: they can specify boot policies or other customizations as a script, without having to understand gPXE completely, or having to edit the code.

Features:

Evaluating arithmetic/boolean expressions

If-then-else branches

Quoting

Summary

Outline

  • These changes need an arithmetic evaluator, to accept expressions.
  • Define if, then, else commands. I am thinking of something like:

if [ expr ]

statements

else

statements

fi

I think this would be the simplest to deal with.

  • Define a goto command, or alternatively for, and while commands
  • A simple syntax to handle expression expansion: something like the current ${} for variables.
  • Also, handling variables in these expressions, especially string variables
  • I also think we need to have some operators like: check if interface exists (maybe (–i net1)?)

Milestones and Timeline


QR Code
QR Code soc:2009:lynusvaz:project_plan:start (generated for current page)