https://github.com/jimhester/regular

Regular expressions for humans, a port of Ruby's Regularity library to R (see https://github.com/kevinushey/rex for current development)
https://github.com/jimhester/regular

Last synced: 3 months ago
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Regular expressions for humans, a port of Ruby's Regularity library to R (see https://github.com/kevinushey/rex for current development)

• Host: GitHub
• URL: https://github.com/jimhester/regular
• Owner: jimhester
• License: mit
• Created: 2014-09-22T21:06:38.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-09-24T13:52:16.000Z (over 10 years ago)
• Last Synced: 2024-06-11T18:20:04.286Z (7 months ago)
• Language: R
• Homepage:
• Size: 124 KB
• Stars: 20
• Watchers: 4
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
#RegulaR

Regular expressions for humans, a port of Ruby's Regularity library

[![Build Status](https://travis-ci.org/jimhester/regulaR.png?branch=master)](https://travis-ci.org/jimhester/regulaR)

## Development of this library is moving to [rex](https://github.com/kevinushey/rex), which provides a more robust R friendly framework

regulaR is a human friendly regular expression builder for R. While regular

expressions are a powerful way to match text, they are sometimes difficult to

document and understand when written.  R also has escaping issues with regular

expression this library hopes to solve.

So instead of writing

```r

regex = "^[0-9]{3}-[A-Za-z]{2}#?(?:a|b)c{2,4}\\$$"

```

You can write

```r

regex = regulaR() %>% start_with(3, digits) %>%

  then('-') %>%

  then(2L, letters) %>%

  maybe('#') %>%

  one_of(c('a','b')) %>%

  between(c(2L,4L), 'c') %>%

  end_with('$')

```

### See Also

- [rex](https://github.com/kevinushey/rex) for an alternate (better?) implementation

This package is inspired by @hadley's [tweet](https://twitter.com/hadleywickham/status/514102801081708544)