rar_stream/
error.rs

1//! Error types for RAR parsing.
2
3use std::fmt;
4use std::io;
5
6#[derive(Debug)]
7pub enum RarError {
8    InvalidSignature,
9    InvalidHeaderType(u8),
10    DecompressionNotSupported(u8),
11    EncryptedNotSupported,
12    BufferTooSmall { needed: usize, have: usize },
13    InvalidOffset { offset: u64, length: u64 },
14    Io(io::Error),
15    NoFilesFound,
16}
17
18impl fmt::Display for RarError {
19    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
20        match self {
21            Self::InvalidSignature => write!(f, "Invalid RAR signature"),
22            Self::InvalidHeaderType(t) => write!(f, "Invalid header type: {}", t),
23            Self::DecompressionNotSupported(m) => write!(f, "Decompression not supported (method: 0x{:02x})", m),
24            Self::EncryptedNotSupported => write!(f, "Encrypted archives not supported"),
25            Self::BufferTooSmall { needed, have } => write!(f, "Buffer too small: need {} bytes, have {}", needed, have),
26            Self::InvalidOffset { offset, length } => write!(f, "Invalid offset: {} (file length: {})", offset, length),
27            Self::Io(e) => write!(f, "IO error: {}", e),
28            Self::NoFilesFound => write!(f, "No files found in archive"),
29        }
30    }
31}
32
33impl std::error::Error for RarError {
34    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
35        match self {
36            Self::Io(e) => Some(e),
37            _ => None,
38        }
39    }
40}
41
42impl From<io::Error> for RarError {
43    fn from(e: io::Error) -> Self {
44        Self::Io(e)
45    }
46}
47
48impl From<crate::decompress::DecompressError> for RarError {
49    fn from(e: crate::decompress::DecompressError) -> Self {
50        match e {
51            crate::decompress::DecompressError::UnsupportedMethod(m) => Self::DecompressionNotSupported(m),
52            _ => Self::Io(io::Error::new(io::ErrorKind::InvalidData, e.to_string())),
53        }
54    }
55}
56
57pub type Result<T> = std::result::Result<T, RarError>;
rar_stream/error.rs

rar_stream/
error.rs
