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use std::error::Error;
use std::fmt::Display;
use std::io::Error as IoError;
pub type ZipResult<T> = Result<T, ZipError>;
#[derive(Debug)]
pub enum ZipError {
Io(IoError),
// Driver errors
StructNotFound(&'static str),
InvalidSignature(&'static str),
InvalidField(&'static str),
Unsupported(&'static str),
Overlapping(&'static str, &'static str),
// API errors
FileNotFound,
WrongPassword,
PasswordIsNotSpecified,
UnseekableFile,
}
impl From<IoError> for ZipError {
fn from(value: IoError) -> Self {
Self::Io(value)
}
}
impl PartialEq for ZipError {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Self::Io(l), Self::Io(r)) => l.kind() == r.kind(),
(Self::StructNotFound(l), Self::StructNotFound(r)) => l == r,
(Self::InvalidSignature(l), Self::InvalidSignature(r)) => l == r,
(Self::InvalidField(l), Self::InvalidField(r)) => l == r,
(Self::Overlapping(l0, l1), Self::Overlapping(r0, r1)) => l0 == r0 && l1 == r1,
_ => core::mem::discriminant(self) == core::mem::discriminant(other),
}
}
}
impl Eq for ZipError {}
impl Display for ZipError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::Io(error) => write!(f, "{}", error),
Self::StructNotFound(struct_name) => {
write!(f, "Struct '{}' not found", struct_name)
}
Self::InvalidSignature(struct_name) => {
write!(f, "Invalid signature of struct '{}'", struct_name)
}
Self::InvalidField(field_name) => {
write!(f, "Field '{}' has invalid data", field_name)
}
Self::Unsupported(data_type) => {
writeln!(f, "Unsupported {}", data_type)
}
Self::Overlapping(struct_name1, struct_name2) => {
write!(f, "`{}` overlap `{}`", struct_name1, struct_name2)
}
Self::FileNotFound => write!(f, "File not found"),
Self::WrongPassword => write!(f, "Wrong password"),
Self::PasswordIsNotSpecified => write!(f, "Password is not specified"),
Self::UnseekableFile => write!(f, "File is unseekable"),
}
}
}
impl Error for ZipError {}
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