truecalc_core/eval/functions/web/encodeurl/
mod.rs

1use crate::eval::coercion::to_string_val;
2use crate::eval::functions::check_arity;
3use crate::types::Value;
4
5/// `ENCODEURL(url)` — percent-encodes a URL string per RFC 3986.
6///
7/// Characters that are unreserved in RFC 3986 (A-Z, a-z, 0-9, -, _, ., ~)
8/// are left unchanged. All other characters are percent-encoded.
9pub fn encodeurl_fn(args: &[Value]) -> Value {
10    if let Some(err) = check_arity(args, 1, 1) {
11        return err;
12    }
13    let text = match to_string_val(args[0].clone()) {
14        Ok(s) => s,
15        Err(e) => return e,
16    };
17    Value::Text(percent_encode(&text))
18}
19
20fn percent_encode(s: &str) -> String {
21    let mut out = String::with_capacity(s.len());
22    for byte in s.bytes() {
23        match byte {
24            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9'
25            | b'-' | b'_' | b'.' | b'~' => {
26                out.push(byte as char);
27            }
28            _ => {
29                out.push('%');
30                out.push(hex_digit(byte >> 4));
31                out.push(hex_digit(byte & 0x0f));
32            }
33        }
34    }
35    out
36}
37
38fn hex_digit(n: u8) -> char {
39    match n {
40        0..=9 => (b'0' + n) as char,
41        _ => (b'A' + n - 10) as char,
42    }
43}
44
45#[cfg(test)]
46mod tests;

truecalc_core/eval/functions/web/encodeurl/mod.rs

truecalc_core/eval/functions/web/encodeurl/
mod.rs