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
use crate::commands::Command;
use crate::error::{CommandError, CommandErrorKind};
use crate::ui::Ui;
use hg::operations::{FindRoot, FindRootErrorKind};
use hg::utils::files::get_bytes_from_path;
pub const HELP_TEXT: &str = "
Print the root directory of the current repository.
Returns 0 on success.
";
pub struct RootCommand<'a> {
ui: &'a Ui,
}
impl<'a> RootCommand<'a> {
pub fn new(ui: &'a Ui) -> Self {
RootCommand { ui }
}
}
impl<'a> Command<'a> for RootCommand<'a> {
fn run(&self) -> Result<(), CommandError> {
let path_buf =
FindRoot::new().run().map_err(|err| match err.kind {
FindRootErrorKind::RootNotFound(path) => {
CommandErrorKind::RootNotFound(path)
}
FindRootErrorKind::GetCurrentDirError(e) => {
CommandErrorKind::CurrentDirNotFound(e)
}
})?;
let bytes = get_bytes_from_path(path_buf);
// TODO use formating macro
self.ui.write_stdout(&[bytes.as_slice(), b"\n"].concat())?;
Ok(())
}
}