diff rust/hg-core/src/revlog/manifest.rs @ 46167:8a4914397d02

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

--- a/rust/hg-core/src/revlog/manifest.rs	Sat Dec 19 15:56:54 2020 +0100
+++ b/rust/hg-core/src/revlog/manifest.rs	Mon Dec 14 16:33:15 2020 +0100
@@ -1,8 +1,8 @@
+use crate::repo::Repo;
 use crate::revlog::revlog::{Revlog, RevlogError};
 use crate::revlog::NodePrefixRef;
 use crate::revlog::Revision;
 use crate::utils::hg_path::HgPath;
-use std::path::Path;
 
 /// A specialized `Revlog` to work with `manifest` data format.
 pub struct Manifest {
@@ -12,9 +12,8 @@
 
 impl Manifest {
     /// Open the `manifest` of a repository given by its root.
-    pub fn open(root: &Path) -> Result<Self, RevlogError> {
-        let index_file = root.join(".hg/store/00manifest.i");
-        let revlog = Revlog::open(&index_file, None)?;
+    pub fn open(repo: &Repo) -> Result<Self, RevlogError> {
+        let revlog = Revlog::open(repo, "00manifest.i", None)?;
         Ok(Self { revlog })
     }