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annotate rust/hg-core/src/utils/strings.rs @ 52759:36d39726c0af

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rust: add utils::strings module This is intended for code similar to stringutil.py. This commit adds one method, short_user, which will be needed for rhg annotate.
author Mitchell Kember <mkember@janestreet.com>
date Fri, 03 Jan 2025 10:50:17 -0500
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children 94e2547e6f3d
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52759
36d39726c0af rust: add utils::strings module
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1 /// Returns a short representation of a user name or email address.
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2 pub fn short_user(user: &[u8]) -> &[u8] {
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3 let mut str = user;
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4 if let Some(i) = memchr::memchr(b'@', str) {
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5 str = &str[..i];
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6 }
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7 if let Some(i) = memchr::memchr(b'<', str) {
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8 str = &str[i + 1..];
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9 }
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10 if let Some(i) = memchr::memchr(b' ', str) {
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11 str = &str[..i];
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12 }
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13 if let Some(i) = memchr::memchr(b'.', str) {
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14 str = &str[..i];
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15 }
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16 str
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17 }
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18
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19 #[cfg(test)]
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20 mod tests {
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21 use super::*;
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22
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23 #[test]
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24 fn test_short_user() {
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25 assert_eq!(short_user(b""), b"");
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26 assert_eq!(short_user(b"Name"), b"Name");
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27 assert_eq!(short_user(b"First Last"), b"First");
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28 assert_eq!(short_user(b"First Last <user@example.com>"), b"user");
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29 assert_eq!(short_user(b"First Last <user.name@example.com>"), b"user");
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30 }
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31 }