1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51///|
/// Convert string to spongeCase (alternating capitalization).
///
/// Transforms the input string to spongeCase by alternating between lowercase
/// and uppercase for each letter, mimicking the "mocking SpongeBob" meme format.
/// Non-alphabetic characters are preserved as-is and don't affect the alternation.
///
/// # Parameters
/// - `text`: The input string to transform
///
/// # Returns
/// The string with alternating case applied
///
/// # Example
///
/// ```moonbit
/// let str = @case.sponge_case("hello world")
/// assert_eq(str, "hElLo WoRlD")
///
/// let str = @case.sponge_case("test string")
/// assert_eq(str, "tEsT sTrInG")
///
/// let str = @case.sponge_case("hello")
/// assert_eq(str, "hElLo")
///
/// let str = @case.sponge_case("test123value")
/// assert_eq(str, "tEsT123vAlUe")
///
/// let str = @case.sponge_case("")
/// assert_eq(str, "")
/// ```
pub fn sponge_case(text : String) -> String {
let chars = text.to_array()
let mut result = ""
let mut should_uppercase = false
for i = 0; i < chars.length(); i = i + 1 {
let char = chars[i]
if is_letter(char) {
if should_uppercase {
result = result + to_uppercase(char).to_string()
} else {
result = result + to_lowercase(char).to_string()
}
should_uppercase = not(should_uppercase)
} else {
result = result + char.to_string()
}
}
result
}