nested-word-parser

Tool to parse Nested Words in a given sequence. The Nested Word Automaton (NWA) used for parsing is built using the Ragel State Machine Compiler. The code demonstrates a way to build the NWA using the Ragel library.

Prerequisites

• Python 3 (Tested on Python 3.4.3)
• gcc
• g++
• Ragel State Machine Compiler
• SWIG

Usage

$ python3 ./nested_word_parser.py --help
$ python3 ./nested_word_parser.py -r <Nested Word Automaton regex> -f <Filename to parse> -i <Absolute location of the Python 3 executable>

Examples

• By default, the values of the arguments are as follows:

  $ python3 ./nested_word_parser.py -r "<0.1.2>" -f "./data/t1.csv" -i "/usr/include/python3.4m"
  0
  0
  1
  2
  0
  Failure
  0
  0
  1
  2
  2
  Success
  

• The below line produces the same output as above (if the Python 3 executable path is valid):

  $ python3 ./nested_word_parser.py