midi2_clip/
lib.rs

1#[derive(Debug, Eq, PartialEq, Clone)]
2pub struct Clip(Vec<u32>);
3
4#[derive(Debug, Eq, PartialEq, Clone)]
5pub enum Error {
6    IncorrectClipHeader,
7}
8
9impl std::fmt::Display for Error {
10    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
11        match self {
12            Self::IncorrectClipHeader => write!(f, "Incorrect MIDI 2.0 clip file header"),
13        }
14    }
15}
16
17impl std::error::Error for Error {}
18
19impl Clip {
20    pub fn read_clip_file<Read: std::io::Read>(stream: &mut Read) -> Result<Self, Error> {
21        let mut header_buffer = [0x0_u8; 8];
22        if stream.read_exact(&mut header_buffer).is_err()
23            || header_buffer != [0x53, 0x4D, 0x46, 0x32, 0x43, 0x4C, 0x49, 0x50]
24        {
25            return Err(Error::IncorrectClipHeader);
26        }
27        todo!()
28    }
29
30    pub fn write_clip_file<Write: std::io::Write>(&self, _output: &mut Write) -> Self {
31        todo!()
32    }
33
34    #[cfg(feature = "smf")]
35    pub fn read_smf<Read: std::io::Read>(_stream: &mut Read) -> Result<Self, Error> {
36        todo!()
37    }
38
39    #[cfg(feature = "smf")]
40    pub fn write_smf<Write: std::io::Write>(&self, _output: &mut Write) -> Self {
41        todo!()
42    }
43}
44
45#[cfg(test)]
46mod tests {
47    use super::*;
48
49    #[test]
50    fn read_clip_checks_for_missing_header() {
51        let data: &[u8] = &[];
52        let mut read = std::io::Cursor::new(data);
53        assert_eq!(
54            Clip::read_clip_file(&mut read),
55            Err(Error::IncorrectClipHeader),
56        );
57    }
58
59    #[test]
60    fn read_clip_checks_for_incorrect_header() {
61        let data: &[u8] = &[0x53, 0x4D, 0x46, 0x32, 0x43, 0x4C, 0x49, 0x0];
62        let mut read = std::io::Cursor::new(data);
63        assert_eq!(
64            Clip::read_clip_file(&mut read),
65            Err(Error::IncorrectClipHeader),
66        );
67    }
68
69    #[test]
70    fn read_clip_checks_for_correct_header() {
71        let data: &[u8] = &[0x53, 0x4D, 0x46, 0x32, 0x43, 0x4C, 0x49, 0x50];
72        let mut read = std::io::Cursor::new(data);
73        assert_eq!(
74            Clip::read_clip_file(&mut read),
75            Ok(Clip(Vec::new()))
76        );
77    }
78}
midi2_clip/lib.rs

midi2_clip/
lib.rs
