eigen_utils/
common.rs

1use regex::Regex;
2use reqwest::Error;
3use std::sync::OnceLock;
4
5static ZERO_ADDRESS: &str = "0x0000000000000000000000000000000000000000";
6
7pub async fn get_url_content(url: &str) -> Result<String, Error> {
8    let response = reqwest::get(url).await?;
9    response.text().await
10}
11
12/// Checks if the given string is a valid Ethereum address and it is not the zero address.
13///
14/// # Arguments
15///
16/// * `address` - A string slice that holds the Ethereum address.
17///
18/// # Returns
19///
20/// * `true` if the address is a valid Ethereum address and it is not the zero address.
21/// * `false` otherwise.
22pub fn is_valid_ethereum_address(address: &str) -> bool {
23    static REGEX: OnceLock<Regex> = OnceLock::new();
24    REGEX
25        .get_or_init(|| Regex::new(r"(?i)^0x[0-9a-f]{40}$").expect("regex is valid"))
26        .is_match(address)
27        && address != ZERO_ADDRESS
28}
29
30#[cfg(test)]
31mod tests {
32
33    #[test]
34    fn test_is_valid_ethereum_address() {
35        let tests = vec![
36            (
37                "valid address",
38                "0x1234567890abcdef1234567890abcdef12345678",
39                true,
40            ),
41            (
42                "uppercase",
43                "0x1234567890ABCDEF1234567890ABCDEF12345678",
44                true,
45            ),
46            (
47                "too short",
48                "0x1234567890abcdef1234567890abcdef123456",
49                false,
50            ),
51            (
52                "missing 0x prefix",
53                "001234567890abcdef1234567890abcdef12345678",
54                false,
55            ),
56            (
57                "non-hex characters",
58                "0x1234567890abcdef1234567890abcdef123ÅÅÅÅÅ",
59                false,
60            ),
61        ];
62
63        for (name, address, expected) in tests {
64            let result = super::is_valid_ethereum_address(address);
65            assert_eq!(expected, result, "{name}");
66        }
67    }
68}
eigen_utils/common.rs

eigen_utils/
common.rs
