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pub fn camel_case(name: &str) -> String {
let mut new_word = true;
name.chars().fold("".to_string(), |mut result, ch| {
if ch == '-' || ch == '_' || ch == ' ' {
new_word = true;
result
} else {
result.push(if new_word {
ch.to_ascii_uppercase()
} else {
ch
});
new_word = false;
result
}
})
}
pub fn snake_case(name: &str, raw: bool) -> String {
match name {
"return" if raw => "r#return".to_string(),
"type" => "kind".to_string(),
name => {
let mut new_word = false;
let mut last_was_upper = false;
name.chars().fold("".to_string(), |mut result, ch| {
if ch == '-' || ch == '_' || ch == ' ' {
new_word = true;
result
} else {
let uppercase = ch.is_uppercase();
if new_word || (!last_was_upper && !result.is_empty() && uppercase) {
result.push('_');
new_word = false;
}
last_was_upper = uppercase;
result.push(if uppercase {
ch.to_ascii_lowercase()
} else {
ch
});
result
}
})
}
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_camel_case() {
assert_eq!(camel_case(""), "");
assert_eq!(camel_case("foobar"), "Foobar");
assert_eq!(camel_case("FooBar"), "FooBar");
assert_eq!(camel_case("foo_bar"), "FooBar");
assert_eq!(camel_case("_foo__bar baz-zzz"), "FooBarBazZzz");
}
#[test]
fn test_snake_case() {
assert_eq!(snake_case("", true), "");
assert_eq!(snake_case("Foobar", true), "foobar");
assert_eq!(snake_case("FooBar", true), "foo_bar");
assert_eq!(snake_case("Foo-BarBaz_zzz", true), "foo_bar_baz_zzz");
}
#[test]
fn test_snake_case_uint() {
assert_eq!(snake_case("UInt", true), "uint");
assert_eq!(snake_case("LongUInt", true), "long_uint");
}
}