Crate rand_regex
source ·Expand description
Generates strings are byte strings following rule of a regular expression.
extern crate rand_regex;
extern crate regex_syntax;
extern crate rand;
use rand::{SeedableRng, Rng};
let mut rng = rand::prng::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 = rng.sample_iter(&gen).take(3).collect::<Vec<String>>();
// all Unicode characters are included when sampling
assert_eq!(samples, vec![
"១५᥏꣒-૨٩-٨𑁩".to_string(),
"႘꘦൩᥌-꧶߉-8၀".to_string(),
"௨൫𑣦០-𖭔༡-෩༤".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 = rng.sample_iter(&gen).take(3).collect::<Vec<String>>();
assert_eq!(samples, vec![
"5786-30-81".to_string(),
"4990-38-85".to_string(),
"4514-20-35".to_string(),
]);
Structs
A random distribution which generates strings matching the specified regex.
Enums
Error returned by
Regex::compile()
and Regex::with_hir()
.