rust: introduce Repo and Vfs types for filesystem abstraction
This is similar to the corresponding Python classes.
Repo represents a repository and knows the path to the `.hg` directory,
the `store` directory, and the working directory.
Separating these will enable supporting the share extension.
A Vfs is created from a Repo for one of these three directories.
It has filesystem access APIs that take a relative std::path::Path
as a parameter.
Differential Revision: https://phab.mercurial-scm.org/D9596
use crate::commands::Command;
use crate::error::CommandError;
use crate::ui::Ui;
use hg::repo::Repo;
use hg::requirements;
pub const HELP_TEXT: &str = "
Print the current repo requirements.
";
pub struct DebugRequirementsCommand {}
impl DebugRequirementsCommand {
pub fn new() -> Self {
DebugRequirementsCommand {}
}
}
impl Command for DebugRequirementsCommand {
fn run(&self, ui: &Ui) -> Result<(), CommandError> {
let repo = Repo::find()?;
let mut output = String::new();
for req in requirements::load(&repo)? {
output.push_str(&req);
output.push('\n');
}
ui.write_stdout(output.as_bytes())?;
Ok(())
}
}