8 releases (4 breaking)
0.15.1 | Feb 12, 2021 |
---|---|
0.15.0 | Jan 9, 2021 |
0.14.2 | Feb 1, 2020 |
0.14.1 | Jan 27, 2020 |
0.11.0 | Oct 27, 2018 |
#280 in Text processing
16,741 downloads per month
Used in 32 crates
(7 directly)
44KB
859 lines
rand_regex
Generates random strings and byte strings matching a regex.
Examples
use rand::{SeedableRng, Rng};
let mut rng = rand_xorshift::XorShiftRng::from_seed(*b"The initial seed");
// creates a generator for sampling strings
let gen = rand_regex::Regex::compile(r"\d{4}-\d{2}-\d{2}", 100).unwrap();
// sample a few strings randomly
let samples = (&mut rng).sample_iter(&gen).take(3).collect::<Vec<String>>();
// all Unicode characters are included when sampling
assert_eq!(samples, vec![
"᱃៧७᧗-꤂႔-૪۰".to_string(),
"𝟽٩𑃶᱒-៤꣖-൭᧓".to_string(),
"𑃰꩗१௭-9၅-६௫".to_string(),
]);
// you could use `regex_syntax::Hir` to include more options
let mut parser = regex_syntax::ParserBuilder::new().unicode(false).build();
let hir = parser.parse(r"\d{4}-\d{2}-\d{2}").unwrap();
let gen = rand_regex::Regex::with_hir(hir, 100).unwrap();
let samples = (&mut rng).sample_iter(&gen).take(3).collect::<Vec<String>>();
assert_eq!(samples, vec![
"8922-87-63".to_string(),
"3149-18-88".to_string(),
"5420-58-55".to_string(),
]);
Acknowledgement
rand_regex
is heavily inspired by regex_generate
and proptest
.
Dependencies
~1–1.3MB
~37K SLoC