Grunk

Overview

Grunk (for GRammar UNderstanding Kernel) is a library for parsing and extracting structured metadata from semi-structured text formats. It is based on a very flexible parsing engine capable of detecting a wide variety of patterns in text formats and extracting information from them. Formats are described in a simple and powerful XML configuration from which Grunk builds a parser at runtime, so adapting Grunk to a new format does not require a coding or compilation step.

Grunk features:

• Pure Java implementation
• Powerful two-step parser with pattern-matching based on Perl5 regular expressions
• Inline transformations making it possible to parse otherwise tricky syntaxes
• XML-based configuration
• Support for XML output
• Flexible API

Look here for documentation.