view rust/hg-core/src/dirstate.rs @ 49894:678588b01af1

rhg: implement checkexec to support weird filesystems

In particular, some of our repos are stored on a fileserver that simulates
POSIX permissions poorly, in such a way that prevents the removal
of execute permission.

This causes rhg show a spurious unclean status, even though python
hg reports the repo as clean.

We fix this by making rhg implement the ~same checkexec logic
that python hg does.

// dirstate module
//
// Copyright 2019 Raphaël Gomès <[e-mail]>
//
// This software may be used and distributed according to the terms of the
// GNU General Public License version 2 or any later version.

use crate::dirstate_tree::on_disk::DirstateV2ParseError;
use crate::revlog::node::NULL_NODE;
use crate::revlog::Node;
use crate::utils::hg_path::HgPath;
use bytes_cast::BytesCast;

pub mod dirs_multiset;
pub mod entry;
pub mod parsers;
pub mod status;

pub use self::entry::*;

#[derive(Debug, PartialEq, Copy, Clone, BytesCast)]
#[repr(C)]
pub struct DirstateParents {
    pub p1: Node,
    pub p2: Node,
}

impl DirstateParents {
    pub const NULL: Self = Self {
        p1: NULL_NODE,
        p2: NULL_NODE,
    };

    pub fn is_merge(&self) -> bool {
        return !(self.p2 == NULL_NODE);
    }
}

pub type StateMapIter<'a> = Box<
    dyn Iterator<
            Item = Result<(&'a HgPath, DirstateEntry), DirstateV2ParseError>,
        > + Send
        + 'a,
>;

pub type CopyMapIter<'a> = Box<
    dyn Iterator<Item = Result<(&'a HgPath, &'a HgPath), DirstateV2ParseError>>
        + Send
        + 'a,
>;