REGEX - regular expression library in CommonLisp

REGEX is POSIX compatible regular expression library.

Syntax

REGEX supports following syntax.

• .
• [ ] see also [Character classes](#Character classes)
• [^ ]
• *
• +
• ?
• {n[,[m]]}
• |
• ( )
• \n

see also Regular expression - Wikipedia

Character classes

REGEX supports following character classes

• [:alnum:] is expanded to [A-Za-z0-9]
• [:alpha:] is expanded to [A-Za-z]
• [:blank:] is expanded to [ \t]
• [:lower:] is expanded to [a-z]
• [:upper:] is expanded to [A-Z]
• [:punct:] is expanded to [\]\[!"#$%&'()*+,./:;<=>?@\^_`{|}~-]
• [:digit:] is expanded to [0-9]
• [:xdigit:] is expanded to [0-9A-Fa-f]

Installation

$ ros install asciian/regex

Benchmarks

vs cl-ppcre

$ ./t/glep.lisp "defun" ./src/*

|======== ppcre-glep ========|
17 hits
Evaluation took:
  0.006 seconds of real time
  0.008000 seconds of total run time (0.008000 user, 0.000000 system)
  133.33% CPU
  16 lambdas converted
  14,587,828 processor cycles
  1,635,520 bytes consed
  

|======== glep-interp ========|
17 hits
Evaluation took:
  0.001 seconds of real time
  0.000000 seconds of total run time (0.000000 user, 0.000000 system)
  0.00% CPU
  2,762,600 processor cycles
  719,792 bytes consed
  

|======== glep ========|
17 hits
Evaluation took:
  0.001 seconds of real time
  0.000000 seconds of total run time (0.000000 user, 0.000000 system)
  0.00% CPU
  2,785,544 processor cycles
  719,744 bytes consed
  

$ ./t/glep.lisp "def.*" ./src/*

|======== ppcre-glep ========|
35 hits
Evaluation took:
  0.008 seconds of real time
  0.008000 seconds of total run time (0.008000 user, 0.000000 system)
  100.00% CPU
  16 lambdas converted
  17,093,525 processor cycles
  1,799,008 bytes consed
  

|======== glep-interp ========|
35 hits
Evaluation took:
  0.001 seconds of real time
  0.000000 seconds of total run time (0.000000 user, 0.000000 system)
  0.00% CPU
  2,573,234 processor cycles
  818,000 bytes consed
  

|======== glep ========|
35 hits
Evaluation took:
  0.001 seconds of real time
  0.004000 seconds of total run time (0.004000 user, 0.000000 system)
  400.00% CPU
  2,879,968 processor cycles
  818,304 bytes consed
  

$ ./t/glep.lisp "a+b*.*[^abc]$" ./src/*

|======== ppcre-glep ========|
249 hits
Evaluation took:
  0.011 seconds of real time
  0.008000 seconds of total run time (0.008000 user, 0.000000 system)
  72.73% CPU
  41 lambdas converted
  24,666,103 processor cycles
  3,076,016 bytes consed
  

|======== glep-interp ========|
249 hits
Evaluation took:
  0.002 seconds of real time
  0.000000 seconds of total run time (0.000000 user, 0.000000 system)
  0.00% CPU
  3,377,599 processor cycles
  1,997,360 bytes consed
  

|======== glep ========|
249 hits
Evaluation took:
  0.001 seconds of real time
  0.000000 seconds of total run time (0.000000 user, 0.000000 system)
  0.00% CPU
  3,366,872 processor cycles
  1,997,024 bytes consed
  

Usage

• (re:compile-regex regex)
• (re:scan regex target)
• (re:regex-replace regex target string :global t)
• (re:regex-replace regex target string :global nil)

Requirements

• cl-cont

License

The REGEX source code is licensed under the terms of the Lisp Lesser GNU Public License, known as the LLGPL. The LLGPL consists of a preamble and the LGPL. Where these conflict, the preamble takes precedence. This project is referenced in the preamble as the LIBRARY.

Author

Fernando Garcia Borges

Copyright

Copyright (c) 2015 Fernando Garcia Borges (fgborges@pm.me)