fstermann / ezr

Easier regex creation in Python.

fstermann

ezr's Issues

Setup linters and pipelines

• pre-commit
• pytest/tox

Add Meta Characters

Add the various meta characters as a subclass of the base pattern #1

Meta Characters

• . Dot
• ^ Caret. Beginning of string
• $ Dollar. End of string
• \A Beginning of string
• \b Word boundary
• \B Non-word boundary
• \d Digit
• \s Whitespace character
• \S Non-whitespace character
• \w Alphanumeric "word" character (letter or digit)
• \W Non-alphanumeric
• \z End of string

Add other Helper Patterns

Add various helper patterns which help the user create expressions.

Helper Patterns

• Vowels aeiou

Add Character Set

Add the basic character set [ ]

Add Greedy Pattern Quantifiers

Add the greedy pattern quantifiers. This should be part of the basic pattern class #1 and available as a standalone function.

Greedy Pattern Quantifiers

• *Zero or more (>= 0)
• + One or more (> 0)
• ? Zero or one (0, 1)
• | Alternation. Either or, but not both.
  • a|b a or b
  • cat|dog cat or dog (not t or d!)
• {n} Exactly n times
• {m, n} Min m and max n times (inclusive)
• {m, } Min m, without upper limit
• {,n} Min 0, max n times
• ( ) Group
• \n Group reference

Add pretty print

Add explanation for each pattern.

Add Setup

• setup.py
• setup.cfg

Add Pattern base class

Add a base class for the pattern.

Functionality

• Concatenation
• Repetition
• Negation (either via not or ~)