This application is born out of a necessity: I needed something light-weight and portable that would process a text file and evaluate the embedded Common Lisp code without touching the rest of the text. My constraints were:
- Light-weight: no servers, no swank, no emacs, no nothing...
- Should be streaming: should not slurp the whole text before it starts processing. It should process it line by line.
- Should work with vanilla $LANG without using heavy libraries or frameworks.
There is a shell file that dispatches the correct preprocessor. Depending on the $LANG it will process the markdown file. Nothing gets touched except the embedded lisp/scala/clojure code.
mlisp $FILE $TITLE
You may provide a title at the prompt, or you may add it in the markdown file in the preamble as
---
title: $TITLE
---
For clojure use '.mclj', for lisp use '.mlisp', for python use '.mpy' and for scala use '.msc' as extensions. The program will watch the $FILE and when it is modified, it will process and spit out an HTML file until it is killed.
Code blocks are marked with ``` and everything in between is treated as
a $LANG code block, and will be executed as such. One can supply a hide
keyword to the header. In that case, the source is not going to be displayed
but the results are going to be displayed. If you pass a hide all then both
the source and the results are not going to be displayed. If you need a piece
of code executed within text (as in $ vs. $$ in LaTeX) then use `` in
the text. See the example example.txt file.