Mercurial > hg
view rust/rhg/src/error.rs @ 45361:47997afadf08
rhg: ask the error message from `CommandError`
Avoid repeating the display of the same error messages in different commands.
Differential Revision: https://phab.mercurial-scm.org/D8865
author | Antoine Cezar <antoine.cezar@octobus.net> |
---|---|
date | Mon, 20 Jul 2020 18:14:52 +0200 |
parents | 227281e76c22 |
children | 5dbf875b3275 |
line wrap: on
line source
use crate::exitcode; use crate::ui::UiError; use hg::utils::files::get_bytes_from_path; use std::convert::From; use std::path::PathBuf; /// The kind of command error #[derive(Debug)] pub enum CommandErrorKind { /// The root of the repository cannot be found RootNotFound(PathBuf), /// The current directory cannot be found CurrentDirNotFound(std::io::Error), /// The standard output stream cannot be written to StdoutError, /// The standard error stream cannot be written to StderrError, } impl CommandErrorKind { pub fn get_exit_code(&self) -> exitcode::ExitCode { match self { CommandErrorKind::RootNotFound(_) => exitcode::ABORT, CommandErrorKind::CurrentDirNotFound(_) => exitcode::ABORT, CommandErrorKind::StdoutError => exitcode::ABORT, CommandErrorKind::StderrError => exitcode::ABORT, } } /// Return the message corresponding to the error kind if any pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> { match self { // TODO use formating macro CommandErrorKind::RootNotFound(path) => { let bytes = get_bytes_from_path(path); Some( [ b"abort: no repository found in '", bytes.as_slice(), b"' (.hg not found)!\n", ] .concat(), ) } // TODO use formating macro CommandErrorKind::CurrentDirNotFound(e) => Some( [ b"abort: error getting current working directory: ", e.to_string().as_bytes(), b"\n", ] .concat(), ), _ => None, } } } /// The error type for the Command trait #[derive(Debug)] pub struct CommandError { pub kind: CommandErrorKind, } impl CommandError { /// Exist the process with the corresponding exit code. pub fn exit(&self) -> () { std::process::exit(self.kind.get_exit_code()) } /// Return the message corresponding to the command error if any pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> { self.kind.get_error_message_bytes() } } impl From<CommandErrorKind> for CommandError { fn from(kind: CommandErrorKind) -> Self { CommandError { kind } } } impl From<UiError> for CommandError { fn from(error: UiError) -> Self { CommandError { kind: match error { UiError::StdoutError(_) => CommandErrorKind::StdoutError, UiError::StderrError(_) => CommandErrorKind::StderrError, }, } } }