1use std::path::Path;
2
3use crate::{
4 common::{Codepoint, CodepointIter, UcdFile, UcdFileByCodepoint},
5 error::Error,
6};
7
8/// A single row in the `Jamo.txt` file.
9///
10/// The `Jamo.txt` file defines the `Jamo_Short_Name` property.
11#[derive(Clone, Debug, Default, Eq, PartialEq)]
12pub struct JamoShortName {
13 /// The codepoint corresponding to this row.
14 pub codepoint: Codepoint,
15 /// The actual "Jamo Short Name." This string contains at most 3 bytes and
16 /// may be empty.
17 pub name: String,
18}
19
20impl UcdFile for JamoShortName {
21 fn relative_file_path() -> &'static Path {
22 Path::new("Jamo.txt")
23 }
24}
25
26impl UcdFileByCodepoint for JamoShortName {
27 fn codepoints(&self) -> CodepointIter {
28 self.codepoint.into_iter()
29 }
30}
31
32impl std::str::FromStr for JamoShortName {
33 type Err = Error;
34
35 fn from_str(line: &str) -> Result<JamoShortName, Error> {
36 let re_parts: &Regex = regex!(
37 r"(?x)
38 ^
39 (?P<codepoint>[A-Z0-9]+);
40 \s*
41 (?P<name>[A-Z]*)
42 ",
43 );
44
45 let caps: Captures<'_> = match re_parts.captures(haystack:line.trim()) {
46 Some(caps: Captures<'_>) => caps,
47 None => return err!("invalid Jamo_Short_name line"),
48 };
49 Ok(JamoShortName {
50 codepoint: caps["codepoint"].parse()?,
51 name: caps.name("name").unwrap().as_str().to_string(),
52 })
53 }
54}
55
56#[cfg(test)]
57mod tests {
58 use super::JamoShortName;
59
60 #[test]
61 fn parse1() {
62 let line = "1164; YAE # HANGUL JUNGSEONG YAE\n";
63 let row: JamoShortName = line.parse().unwrap();
64 assert_eq!(row.codepoint, 0x1164);
65 assert_eq!(row.name, "YAE");
66 }
67
68 #[test]
69 fn parse2() {
70 let line = "110B; # HANGUL CHOSEONG IEUNG\n";
71 let row: JamoShortName = line.parse().unwrap();
72 assert_eq!(row.codepoint, 0x110B);
73 assert_eq!(row.name, "");
74 }
75}
76