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pub fn camel_case(input: &str) -> String {
let mut capitalize_next = true;
let mut result = String::new();
result.reserve(input.len());
for c in input.chars() {
if c == '_' {
capitalize_next = true;
} else if capitalize_next {
result.push(c.to_ascii_uppercase());
capitalize_next = false;
} else {
result.push(c);
}
}
result
}
pub fn snake_case(input: &str) -> String {
let mut result = String::new();
let mut last_lower = false;
for c in input.chars() {
if c.is_ascii_uppercase() && last_lower {
result.push('_');
}
result.push(c.to_ascii_lowercase());
last_lower = c.is_lowercase();
}
result
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_camel_case() {
assert_eq!("FooBarBazQuxQUUX", camel_case("foo_barBaz_QuxQUUX"));
assert_eq!("FooBarBazQuxQUUX", camel_case("Foo_barBaz_QuxQUUX"));
}
#[test]
fn test_snake_case() {
assert_eq!("foo_bar_baz_qux_quux", snake_case("foo_barBaz_QuxQUUX"));
assert_eq!("foo_bar_baz_qux_quux", snake_case("Foo_barBaz_QuxQUUX"));
}
}