mirror of
https://github.com/facebook/sapling.git
synced 2024-10-12 17:58:27 +03:00
60f81d3be2
Summary:
We need to canonicalize `current_exe` to resolve symlinks on OSX.
Unfortunetely, on there's no way to just resolve symlinks and not
turn path into a `\\?\` on Windows, AFAIK.
Once the path is canonicalized on Windows, it starts with `\\?\` and
forward slashes are no longer recognized as valid separators.
Here's a demonstration:
```
> cat src\main.rs
use std::path::Path;
fn main() {
let p = Path::new("\\\\?\\C:\\Code\\fbsource\\fbcode\\scm\\hg\\mercurial/entrypoint.py");
for comp in p.components() { println!("{:?}", comp); }
println!("{:?} exists: {}", p, p.exists());
let p = Path::new("\\\\?\\C:\\Code\\fbsource\\fbcode\\scm\\hg\\mercurial\\entrypoint.py");
for comp in p.components() { println!("{:?}", comp); }
println!("{:?} exists: {}", p, p.exists());
let p = Path::new("C:\\Code\\fbsource\\fbcode\\scm\\hg\\mercurial/entrypoint.py");
for comp in p.components() { println!("{:?}", comp); }
println!("{:?} exists: {}", p, p.exists());
}
> cargo run
Prefix(PrefixComponent { raw: "\\\\?\\C:", parsed: VerbatimDisk(67) })
RootDir
Normal("Code")
Normal("fbsource")
Normal("fbcode")
Normal("scm")
Normal("hg")
Normal("mercurial/entrypoint.py")
"\\\\?\\C:\\Code\\fbsource\\fbcode\\scm\\hg\\mercurial/entrypoint.py" exists: false
Prefix(PrefixComponent { raw: "\\\\?\\C:", parsed: VerbatimDisk(67) })
RootDir
Normal("Code")
Normal("fbsource")
Normal("fbcode")
Normal("scm")
Normal("hg")
Normal("mercurial")
Normal("entrypoint.py")
"\\\\?\\C:\\Code\\fbsource\\fbcode\\scm\\hg\\mercurial\\entrypoint.py" exists: true
Prefix(PrefixComponent { raw: "C:", parsed: Disk(67) })
RootDir
Normal("Code")
Normal("fbsource")
Normal("fbcode")
Normal("scm")
Normal("hg")
Normal("mercurial")
Normal("entrypoint.py")
"C:\\Code\\fbsource\\fbcode\\scm\\hg\\mercurial/entrypoint.py" exists: true
```
Differential Revision: D13176266
fbshipit-source-id: 5f35a3263e058d179b237c80f28e4fdf44105576
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|---|---|---|
| .. | ||
| argparse | ||
| bookmarkstore | ||
| cdatapack | ||
| clib | ||
| commitcloudsubscriber | ||
| configparser | ||
| encoding | ||
| hg_watchman_client | ||
| hgpython | ||
| indexedlog | ||
| linelog | ||
| lz4-pyframe | ||
| minibench | ||
| mpatch | ||
| mpatch-sys | ||
| pathmatcher | ||
| radixbuf | ||
| revisionstore | ||
| third-party | ||
| treestate | ||
| types | ||
| vlqencoding | ||
| watchman_client | ||
| zstdelta | ||
| Cargo.toml | ||
| README.md | ||
lib
Any native code (C/C++/Rust) that Mercurial (either core or extensions)
depends on should go here. Python code, or native code that depends on
Python code (e.g. #include <Python.h> or use cpython) is disallowed.
As we start to convert more of Mercurial into Rust, and write new paths entrirely in native code, we'll want to limit our dependency on Python, which is why this barrier exists.
See also hgext/extlib/README.md, mercurial/cext/README.mb.
How do I choose between lib and extlib (and cext)?
If your code is native and doesn't depend on Python (awesome!), it goes here.
Otherwise, put it in hgext/extlib (if it's only used by extensions) or
mercurial/cext (if it's used by extensions or core).