// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?m)(?P<release>(?:0|[1-9])\d*(?:\.(?:0|[1-9]\d*)){2})(?:-(?P<pre>(?P<prel>a|b|rc)(?P<pren>(?:0|[1-9])\d*)))?(?:\+(?P<local>[a-z\d]+(?:[-_\.][a-z\d]+)*))?").unwrap();
let string = "Valid PEP440 Verions
Final versions
0.9
0.9.1
0.9.2
0.9.10
0.9.11
1.0.1
2.0.1
Version epochs
1.0
1.1
2.0
2013.10
2014.04
2013.10
2014.04
1!1.0
1!1.1
1!2.0
Examples of compliant version schemes
Simple \"major.minor\" versioning:
0.1
0.2
0.3
1.0
1.1
Simple \"major.minor.micro\" versioning:
1.1.0
1.1.1
1.1.2
1.2.0
\"major.minor\" versioning with alpha, beta and candidate pre-releases:
0.9
1.0-a1
1.0-a2
1.0.7-b1
1.0.34-rc1
1.0
1.1.0-a1
\"major.minor\" versioning with developmental releases, release candidates and post-releases for minor corrections:
0.9
1.0.dev1
1.0.dev2
1.0.dev3
1.0.dev4
1.0c1
1.0c2
1.0
1.0.post1
1.1.dev1
Date based releases, using an incrementing serial within each year, skipping zero:
2012.1
2012.2
2012.3
2012.15
2013.1
2013.2
The following example covers many of the possible combinations:
1.0.dev456
1.0a1
1.0a2.dev456
1.0a12.dev456
1.0a12
1.0b1.dev456
1.0b2
1.0b2.post345.dev456
1.0b2.post345
1.0rc1.dev456
1.0rc1
1.0
1.0+abc.5
1.0+abc.7
1.0+5
1.0.post456.dev34
1.0.post456
1.1.dev1";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/