rwxrob / regx

Regular Expression Utility Command

Simple utility command to create and test Go-compatible regular expressions from the command line, stdin, or in a regx.txt file where the first line is the expression and the rest of the file the test content to be matched. When in regx.txt watch mode retest every 1/10th of a second and center print a colorful Sorry or Yes! suitable for displaying in a TMUX pane if there is a change. (You do use TMUX, right?)

Installation

If you have go installed you can use go get:

go get github.com/rwxrob/regx

Usage

usage: regx REGX STRING
       ... | regx REGX
       regx (looks for regx.txt)

Sample successful regx.txt:

(?m)answ
answers = [
  "Yes.",
  "No.",
  "Maybe."
  ]

Sample failing regx.txt:

(?m)blah
answers = [
  "Yes.",
  "No.",
  "Maybe."
  ]

Motivation

We use regular expressions all the time at SkilStak™ as we create text bots and learning challenges that examine the content and output of commands when validating student code. This tool is also used during our regular expression lessons and workshops and a similar version is used to assess student regular expression skills.

TODO

Need to create a multi-line mode so every line after the first is checked individually instead of all but the first lines being checked as a buffer. This could be integrated into test cases specifically for different natural language options.