This is abnfgen, an ABNF-grammar based test case generator.
ABNF -- Advanced Backus Naur Form -- is a grammar format used in
many protocol specifications. It is described in RFC 4234.
ABNF looks like this:
coin = "heads" / "tails" ; one of two outcomes
Given an ABNF grammar, abnfgen generates files in a subdirectory.
Each file is a (different) random document that complies with
the grammar.
Uses:
o With -l, checking an ABNF grammar for syntactical correctness.
o Generating sample documents that illustrate a grammar -
"Is this what you meant?"
o Generating test cases for tools that are supposed
to parse the grammar.
For updates, see <http://www.quut.com/abnfgen>.