Full string match

[XakepSDK]

In java, i could do "string".matches("regexStr") and it will check if whole string matches to a given regex.
I haven't found a way to do this with this crate.
I'm not sure if i should open feature request or it's already possible, just i haven't noticed the way

[BurntSushi]

From the docs:

All searching is done with an implicit .*? at the beginning and end of an expression. To force an expression to match the whole string (or a prefix or a suffix), you must use an anchor like ^ or $ (or \A and \z).

So in your case, you would want:

use regex::Regex;

fn main() {
    let matched = Regex::new(r"^regexStr$").unwrap().is_match("string");
    println!("{:?}", matched);
}

[XakepSDK]

Regex comes over the network. Is it safe to modify incoming regex this way? May this bring some unforeseen consequences?

[BurntSushi]

If you already trust the regex itself, then sure, I don't see why not. ^(?:regex-from-network)$ should do the trick. Now, regex-from-network could break out of the parenthetical and subvert your approach, but only by crafting an invalid regex. So you could check that Regex::new(regex-from-network) is itself a valid regex first. But if you're at that point, then it means your regex is untrusted itself, which could pose other problems. (Performance wise.)