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