dwarfs_enc/
error.rs

1use std::fmt;
2
3/// A `Result` with default error [`Error`].
4pub type Result<T, E = Error> = std::result::Result<T, E>;
5
6/// An error representing any possible error raised from this crate.
7pub struct Error(Box<ErrorInner>);
8
9#[derive(Debug)]
10#[cfg_attr(not(feature = "default"), allow(dead_code))]
11pub(crate) enum ErrorInner {
12    Limit(&'static str),
13    SerializeMetadata(dwarfs::metadata::Error),
14    DuplicatedEntry,
15    Compress(std::io::Error),
16
17    Io(std::io::Error),
18}
19
20impl fmt::Debug for Error {
21    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
22        self.0.fmt(f)
23    }
24}
25
26impl fmt::Display for Error {
27    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
28        match &*self.0 {
29            ErrorInner::DuplicatedEntry => f.pad("duplicated entry names in a directory"),
30            ErrorInner::Limit(msg) => write!(f, "{msg}"),
31            ErrorInner::SerializeMetadata(err) => err.fmt(f),
32            ErrorInner::Compress(err) | ErrorInner::Io(err) => err.fmt(f),
33        }
34    }
35}
36
37impl std::error::Error for Error {
38    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
39        match &*self.0 {
40            ErrorInner::Compress(err) | ErrorInner::Io(err) => Some(err),
41            ErrorInner::SerializeMetadata(err) => Some(err),
42            _ => None,
43        }
44    }
45}
46
47impl From<ErrorInner> for Error {
48    #[cold]
49    fn from(err: ErrorInner) -> Self {
50        Self(Box::new(err))
51    }
52}
53
54impl From<std::io::Error> for Error {
55    #[cold]
56    fn from(err: std::io::Error) -> Self {
57        Self(Box::new(ErrorInner::Io(err)))
58    }
59}
60
61impl From<dwarfs::metadata::Error> for Error {
62    #[cold]
63    fn from(err: dwarfs::metadata::Error) -> Self {
64        Self(Box::new(ErrorInner::SerializeMetadata(err)))
65    }
66}
dwarfs_enc/error.rs

dwarfs_enc/
error.rs
