bv_types/
mime.rs

1use crate::vocabulary;
2
3/// Returns the MIME hint for `type_id`, walking up the hierarchy until one is found.
4pub fn mime_hint(type_id: &str) -> Option<String> {
5    let vocab = vocabulary::vocabulary();
6    let mut current = type_id;
7    loop {
8        match vocab.get(current) {
9            None => return None,
10            Some(def) => {
11                if let Some(mime) = &def.mime {
12                    return Some(mime.clone());
13                }
14                match def.parent.as_deref() {
15                    None => return None,
16                    Some(p) => current = p,
17                }
18            }
19        }
20    }
21}
22
23#[cfg(test)]
24mod tests {
25    use super::*;
26
27    #[test]
28    fn fasta_mime() {
29        assert_eq!(mime_hint("fasta").as_deref(), Some("application/x-fasta"));
30    }
31
32    #[test]
33    fn blast_tab_inherits_tabular_mime() {
34        assert_eq!(
35            mime_hint("blast_tab").as_deref(),
36            Some("text/tab-separated-values")
37        );
38    }
39
40    #[test]
41    fn blast_db_no_mime() {
42        assert_eq!(mime_hint("blast_db"), None);
43    }
44
45    #[test]
46    fn unknown_no_mime() {
47        assert_eq!(mime_hint("no_such_type"), None);
48    }
49}
bv_types/mime.rs

bv_types/
mime.rs
