forked from lix-project/lix
119 lines
3.7 KiB
Rust
119 lines
3.7 KiB
Rust
use std::fmt;
|
|
|
|
#[derive(Debug)]
|
|
pub enum Error {
|
|
InvalidPath(crate::store::StorePath),
|
|
BadStorePath(std::path::PathBuf),
|
|
NotInStore(std::path::PathBuf),
|
|
BadNarInfo,
|
|
BadBase32,
|
|
StorePathNameEmpty,
|
|
StorePathNameTooLong,
|
|
BadStorePathName,
|
|
NarSizeFieldTooBig,
|
|
BadNarString,
|
|
BadNarPadding,
|
|
BadNarVersionMagic,
|
|
MissingNarOpenTag,
|
|
MissingNarCloseTag,
|
|
MissingNarField,
|
|
BadNarField(String),
|
|
BadExecutableField,
|
|
IOError(std::io::Error),
|
|
#[cfg(unused)]
|
|
HttpError(hyper::error::Error),
|
|
Misc(String),
|
|
#[cfg(not(test))]
|
|
Foreign(CppException),
|
|
BadTarFileMemberName(String),
|
|
}
|
|
|
|
impl From<std::io::Error> for Error {
|
|
fn from(err: std::io::Error) -> Self {
|
|
Error::IOError(err)
|
|
}
|
|
}
|
|
|
|
#[cfg(unused)]
|
|
impl From<hyper::error::Error> for Error {
|
|
fn from(err: hyper::error::Error) -> Self {
|
|
Error::HttpError(err)
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for Error {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
match self {
|
|
Error::InvalidPath(_) => write!(f, "invalid path"),
|
|
Error::BadNarInfo => write!(f, ".narinfo file is corrupt"),
|
|
Error::BadStorePath(path) => write!(f, "path '{}' is not a store path", path.display()),
|
|
Error::NotInStore(path) => {
|
|
write!(f, "path '{}' is not in the Nix store", path.display())
|
|
}
|
|
Error::BadBase32 => write!(f, "invalid base32 string"),
|
|
Error::StorePathNameEmpty => write!(f, "store path name is empty"),
|
|
Error::StorePathNameTooLong => {
|
|
write!(f, "store path name is longer than 211 characters")
|
|
}
|
|
Error::BadStorePathName => write!(f, "store path name contains forbidden character"),
|
|
Error::NarSizeFieldTooBig => write!(f, "size field in NAR is too big"),
|
|
Error::BadNarString => write!(f, "NAR string is not valid UTF-8"),
|
|
Error::BadNarPadding => write!(f, "NAR padding is not zero"),
|
|
Error::BadNarVersionMagic => write!(f, "unsupported NAR version"),
|
|
Error::MissingNarOpenTag => write!(f, "NAR open tag is missing"),
|
|
Error::MissingNarCloseTag => write!(f, "NAR close tag is missing"),
|
|
Error::MissingNarField => write!(f, "expected NAR field is missing"),
|
|
Error::BadNarField(s) => write!(f, "unrecognized NAR field '{}'", s),
|
|
Error::BadExecutableField => write!(f, "bad 'executable' field in NAR"),
|
|
Error::IOError(err) => write!(f, "I/O error: {}", err),
|
|
#[cfg(unused)]
|
|
Error::HttpError(err) => write!(f, "HTTP error: {}", err),
|
|
#[cfg(not(test))]
|
|
Error::Foreign(_) => write!(f, "<C++ exception>"), // FIXME
|
|
Error::Misc(s) => write!(f, "{}", s),
|
|
Error::BadTarFileMemberName(s) => {
|
|
write!(f, "tar archive contains illegal file name '{}'", s)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(not(test))]
|
|
impl From<Error> for CppException {
|
|
fn from(err: Error) -> Self {
|
|
match err {
|
|
Error::Foreign(ex) => ex,
|
|
_ => CppException::new(&err.to_string()),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(not(test))]
|
|
#[repr(C)]
|
|
#[derive(Debug)]
|
|
pub struct CppException(*const libc::c_void); // == std::exception_ptr*
|
|
|
|
#[cfg(not(test))]
|
|
impl CppException {
|
|
fn new(s: &str) -> Self {
|
|
Self(unsafe { make_error(s) })
|
|
}
|
|
}
|
|
|
|
#[cfg(not(test))]
|
|
impl Drop for CppException {
|
|
fn drop(&mut self) {
|
|
unsafe {
|
|
destroy_error(self.0);
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(not(test))]
|
|
extern "C" {
|
|
#[allow(improper_ctypes)] // YOLO
|
|
fn make_error(s: &str) -> *const libc::c_void;
|
|
|
|
fn destroy_error(exc: *const libc::c_void);
|
|
}
|