mit_commit/
comment.rs

1use std::borrow::Cow;
2
3const LEGAL_CHARACTERS: [char; 10] = ['#', ';', '@', '!', '$', '%', '^', '&', '|', ':'];
4
5/// A single comment from a `CommitMessage`
6#[derive(Debug, PartialEq, Eq, Clone)]
7pub struct Comment<'a> {
8    comment: Cow<'a, str>,
9}
10
11impl<'a> Comment<'a> {
12    /// Append one [`Comment`] onto another
13    ///
14    /// This is for concatenating multiple [`Comment`] together
15    ///
16    /// # Example
17    ///
18    /// ```
19    /// use indoc::indoc;
20    /// use mit_commit::Comment;
21    ///
22    /// assert_eq!(
23    ///     Comment::from(indoc!(
24    ///         "
25    ///         Example 1
26    ///         Example 2"
27    ///     )),
28    ///     Comment::from("Example 1").append(&Comment::from("Example 2"))
29    /// )
30    /// ```
31    #[must_use]
32    pub fn append(&self, additional: &Self) -> Self {
33        Self::from(format!("{}\n{}", self.comment, additional.comment))
34    }
35
36    /// Tells you if a given comment character is a potential comment character
37    ///
38    /// # Example
39    ///
40    /// ```
41    /// use mit_commit::Comment;
42    ///
43    /// assert!(!Comment::is_legal_comment_char('?'),);
44    /// assert!(Comment::is_legal_comment_char('#'),);
45    /// ```
46    #[must_use]
47    pub fn is_legal_comment_char(character: char) -> bool {
48        LEGAL_CHARACTERS.contains(&character)
49    }
50}
51
52impl<'a> From<Cow<'a, str>> for Comment<'a> {
53    fn from(comment: Cow<'a, str>) -> Self {
54        Self { comment }
55    }
56}
57
58impl<'a> From<String> for Comment<'a> {
59    fn from(comment: String) -> Self {
60        Self {
61            comment: comment.into(),
62        }
63    }
64}
65
66impl<'a> From<&'a str> for Comment<'a> {
67    fn from(comment: &'a str) -> Self {
68        Self {
69            comment: comment.into(),
70        }
71    }
72}
73
74impl<'a> From<Comment<'a>> for String {
75    fn from(comment: Comment<'a>) -> Self {
76        comment.comment.into()
77    }
78}
mit_commit/comment.rs

mit_commit/
comment.rs
