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use std::error::Error;
use std::fmt::{Debug, Display};
use std::io;
pub type ArchiveResult<R> = Result<R, ArchiveError>;
#[derive(Debug)]
pub enum ArchiveError {
IO(io::Error),
BadArchive { reason: &'static str },
IncorrectSignature { expected: u32, received: u32 },
IncorrectString { location: &'static str },
IncorrectDate { year: u16, month: u16, day: u16 },
IncorrectTime { hour: u16, min: u16, sec: u16 },
UnsupportedCompressionMethod { method: u16 },
}
impl From<io::Error> for ArchiveError {
fn from(value: io::Error) -> Self {
Self::IO(value)
}
}
impl Display for ArchiveError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::IO(err) => write!(f, "{err}"),
Self::BadArchive { reason } => {
write!(f, "Bad archive because {reason}")
}
Self::IncorrectSignature { expected, received } => {
write!(
f,
"Wrong signature (expected: {expected}, received: {received})"
)
}
Self::IncorrectString { location } => {
write!(f, "Incorrect string in {location}")
}
Self::IncorrectDate { year, month, day } => {
write!(
f,
"Incorrect date (year: {year}, month: {month}, day: {day})"
)
}
Self::IncorrectTime { hour, min, sec } => {
write!(f, "Incorrect time (hour: {hour}, min: {min}, sec: {sec})")
}
Self::UnsupportedCompressionMethod { method } => {
write!(f, "Unsupported compression method (method: {method})")
}
}
}
}
impl Error for ArchiveError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
match self {
Self::IO(source) => Some(source),
_ => None,
}
}
}
|
