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Greg Burri 2025-01-29 14:37:25 +01:00
parent 9d3f9e9c60
commit 79a0aeb1b8
24 changed files with 613 additions and 231 deletions
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41
backend/src/utils.rs
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@ -39,44 +39,3 @@ pub fn get_url_from_host(host: &str) -> String {
host
)
}
pub fn substitute(str: &str, pattern: &str, replacements: &[&str]) -> String {
let mut result = String::with_capacity(
(str.len() + replacements.iter().map(|s| s.len()).sum::<usize>())
.saturating_sub(pattern.len() * replacements.len()),
);
let mut i = 0;
for s in str.split(pattern) {
result.push_str(s);
if i < replacements.len() {
result.push_str(replacements[i]);
}
i += 1;
}
if i == 1 {
return str.to_string();
}
result
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_substitute() {
assert_eq!(substitute("", "", &[]), "");
assert_eq!(substitute("", "", &[""]), "");
assert_eq!(substitute("", "{}", &["a"]), "");
assert_eq!(substitute("a", "{}", &["b"]), "a");
assert_eq!(substitute("a{}", "{}", &["b"]), "ab");
assert_eq!(substitute("{}c", "{}", &["b"]), "bc");
assert_eq!(substitute("a{}c", "{}", &["b"]), "abc");
assert_eq!(substitute("{}b{}", "{}", &["a", "c"]), "abc");
assert_eq!(substitute("{}{}{}", "{}", &["a", "bc", "def"]), "abcdef");
assert_eq!(substitute("{}{}{}", "{}", &["a"]), "a");
}
}