Mercurial > hg
view rust/rhg/src/error.rs @ 46446:1dcd9c9975ed
rust: Fold find_root and check_requirements into Repo::find
Differential Revision: https://phab.mercurial-scm.org/D9906
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Thu, 28 Jan 2021 20:31:42 +0100 |
parents | ca3f73cc3cf4 |
children | a6e4e4650bac |
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use crate::ui::utf8_to_local; use crate::ui::UiError; use format_bytes::format_bytes; use hg::errors::HgError; use hg::repo::RepoFindError; use hg::revlog::revlog::RevlogError; use hg::utils::files::get_bytes_from_path; use std::convert::From; /// The kind of command error #[derive(Debug)] pub enum CommandError { /// Exit with an error message and "standard" failure exit code. Abort { message: Vec<u8> }, /// A mercurial capability as not been implemented. /// /// There is no error message printed in this case. /// Instead, we exit with a specic status code and a wrapper script may /// fallback to Python-based Mercurial. Unimplemented, } impl CommandError { pub fn abort(message: impl AsRef<str>) -> Self { CommandError::Abort { // TODO: bytes-based (instead of Unicode-based) formatting // of error messages to handle non-UTF-8 filenames etc: // https://www.mercurial-scm.org/wiki/EncodingStrategy#Mixing_output message: utf8_to_local(message.as_ref()).into(), } } } impl From<HgError> for CommandError { fn from(error: HgError) -> Self { match error { HgError::UnsupportedFeature(_) => CommandError::Unimplemented, _ => CommandError::abort(error.to_string()), } } } impl From<UiError> for CommandError { fn from(_error: UiError) -> Self { // If we already failed writing to stdout or stderr, // writing an error message to stderr about it would be likely to fail // too. CommandError::abort("") } } impl From<RepoFindError> for CommandError { fn from(error: RepoFindError) -> Self { match error { RepoFindError::NotFoundInCurrentDirectoryOrAncestors { current_directory, } => CommandError::Abort { message: format_bytes!( b"no repository found in '{}' (.hg not found)!", get_bytes_from_path(current_directory) ), }, RepoFindError::Other(error) => error.into(), } } } impl From<(RevlogError, &str)> for CommandError { fn from((err, rev): (RevlogError, &str)) -> CommandError { match err { RevlogError::InvalidRevision => CommandError::abort(format!( "invalid revision identifier {}", rev )), RevlogError::AmbiguousPrefix => CommandError::abort(format!( "ambiguous revision identifier {}", rev )), RevlogError::Other(error) => error.into(), } } }