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use std::error::Error;
use std::fmt;
use std::io;
pub type ZipResult<T> = Result<T, ZipError>;
#[derive(Debug)]
pub struct InvalidPassword;
impl fmt::Display for InvalidPassword {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "invalid password for file in archive")
}
}
impl Error for InvalidPassword {}
#[derive(Debug)]
pub enum ZipError {
Io(io::Error),
InvalidArchive(&'static str),
UnsupportedArchive(&'static str),
FileNotFound,
}
impl From<io::Error> for ZipError {
fn from(err: io::Error) -> ZipError {
ZipError::Io(err)
}
}
impl fmt::Display for ZipError {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
match self {
ZipError::Io(err) => write!(fmt, "{}", err),
ZipError::InvalidArchive(err) => write!(fmt, "invalid Zip archive: {}", err),
ZipError::UnsupportedArchive(err) => write!(fmt, "unsupported Zip archive: {}", err),
ZipError::FileNotFound => write!(fmt, "specified file not found in archive"),
}
}
}
impl Error for ZipError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
match self {
ZipError::Io(err) => Some(err),
_ => None,
}
}
}
impl ZipError {
pub const PASSWORD_REQUIRED: &'static str = "Password required to decrypt file";
}
impl From<ZipError> for io::Error {
fn from(err: ZipError) -> io::Error {
io::Error::new(io::ErrorKind::Other, err)
}
}