Mercurial > hg
view rust/rhg/src/error.rs @ 46441:741e36f472a5
rhg: Print an error message in more cases
Differential Revision: https://phab.mercurial-scm.org/D9895
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Wed, 27 Jan 2021 15:04:51 +0100 |
parents | 776b97179c06 |
children | 02d3bb972121 |
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use crate::exitcode; use crate::ui::utf8_to_local; use crate::ui::UiError; use format_bytes::format_bytes; use hg::errors::HgError; use hg::operations::FindRootError; use hg::requirements::RequirementsError; use hg::revlog::revlog::RevlogError; use hg::utils::files::get_bytes_from_path; use std::convert::From; use std::path::PathBuf; /// The kind of command error #[derive(Debug, derive_more::From)] pub enum CommandError { /// The root of the repository cannot be found RootNotFound(PathBuf), /// The current directory cannot be found CurrentDirNotFound(std::io::Error), /// `.hg/requires` #[from] RequirementsError(RequirementsError), /// The standard output stream cannot be written to StdoutError, /// The standard error stream cannot be written to StderrError, /// The command aborted Abort(Option<Vec<u8>>), /// A mercurial capability as not been implemented. Unimplemented, /// Common cases #[from] Other(HgError), } impl CommandError { pub fn get_exit_code(&self) -> exitcode::ExitCode { match self { CommandError::RootNotFound(_) => exitcode::ABORT, CommandError::CurrentDirNotFound(_) => exitcode::ABORT, CommandError::RequirementsError( RequirementsError::Unsupported { .. }, ) => exitcode::UNIMPLEMENTED_COMMAND, CommandError::RequirementsError(_) => exitcode::ABORT, CommandError::StdoutError => exitcode::ABORT, CommandError::StderrError => exitcode::ABORT, CommandError::Abort(_) => exitcode::ABORT, CommandError::Unimplemented => exitcode::UNIMPLEMENTED_COMMAND, CommandError::Other(HgError::UnsupportedFeature(_)) => { exitcode::UNIMPLEMENTED_COMMAND } CommandError::Other(_) => exitcode::ABORT, } } /// Return the message corresponding to the error if any pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> { match self { CommandError::RootNotFound(path) => { let bytes = get_bytes_from_path(path); Some(format_bytes!( b"abort: no repository found in '{}' (.hg not found)!\n", bytes.as_slice() )) } CommandError::CurrentDirNotFound(e) => Some(format_bytes!( b"abort: error getting current working directory: {}\n", e.to_string().as_bytes(), )), CommandError::RequirementsError(RequirementsError::Corrupted) => { Some( "abort: .hg/requires is corrupted\n".as_bytes().to_owned(), ) } CommandError::Abort(message) => message.to_owned(), CommandError::RequirementsError(_) | CommandError::StdoutError | CommandError::StderrError | CommandError::Unimplemented | CommandError::Other(HgError::UnsupportedFeature(_)) => None, CommandError::Other(e) => { Some(format_bytes!(b"{}\n", e.to_string().as_bytes())) } } } /// Exist the process with the corresponding exit code. pub fn exit(&self) { std::process::exit(self.get_exit_code()) } } impl From<UiError> for CommandError { fn from(error: UiError) -> Self { match error { UiError::StdoutError(_) => CommandError::StdoutError, UiError::StderrError(_) => CommandError::StderrError, } } } impl From<FindRootError> for CommandError { fn from(err: FindRootError) -> Self { match err { FindRootError::RootNotFound(path) => { CommandError::RootNotFound(path) } FindRootError::GetCurrentDirError(e) => { CommandError::CurrentDirNotFound(e) } } } } impl From<(RevlogError, &str)> for CommandError { fn from((err, rev): (RevlogError, &str)) -> CommandError { match err { RevlogError::IoError(err) => CommandError::Abort(Some( utf8_to_local(&format!("abort: {}\n", err)).into(), )), RevlogError::InvalidRevision => CommandError::Abort(Some( utf8_to_local(&format!( "abort: invalid revision identifier {}\n", rev )) .into(), )), RevlogError::AmbiguousPrefix => CommandError::Abort(Some( utf8_to_local(&format!( "abort: ambiguous revision identifier {}\n", rev )) .into(), )), RevlogError::UnsuportedVersion(version) => { CommandError::Abort(Some( utf8_to_local(&format!( "abort: unsupported revlog version {}\n", version )) .into(), )) } RevlogError::Corrupted => { CommandError::Abort(Some("abort: corrupted revlog\n".into())) } RevlogError::UnknowDataFormat(format) => { CommandError::Abort(Some( utf8_to_local(&format!( "abort: unknow revlog dataformat {:?}\n", format )) .into(), )) } } } }