(personal draft) tag replacing

tagrplc.rs

const INLINE_TAG: &'static str = "[inline]";
const CLOSED_INLINE_TAG: &'static str = "[/inline]";


fn main() {
    let raw_input = "`hello`";
    let couple = (INLINE_TAG, CLOSED_INLINE_TAG);
    let delimiter = "`";
    let wrapped_content = wrap_with_couple_of_tag(raw_input.to_owned(), couple, delimiter);
    assert_eq!(wrapped_content, "[inline]hello[/inline]");
}

fn wrap_with_couple_of_tag(sentence: String, couple: (&str, &str), delimiter: &str) -> String {
    let mut _sentence = sentence;
    if _sentence.len() < 2 {
        eprintln!("the sentence length must be (equal or) greater than 2.");
    }
    let first_idx: usize = _sentence.find(delimiter).unwrap_or_else(|| panic!("first element not found"));
    _sentence.remove(first_idx);
    // last removed element
    _sentence.pop();
    let mut wrapped_foo = String::new();
    let (opened_tag, closed_tag) = couple;
    wrapped_foo.push_str(opened_tag);
    wrapped_foo.push_str(_sentence.as_str());
    wrapped_foo.push_str(closed_tag);
    std::mem::drop(_sentence);
    wrapped_foo
}