comparison rust/hg-core/src/utils/files.rs @ 44267:0e9ac3968b56

rust-dirs-multiset: add `DirsChildrenMultiset`

In a future patch, this structure will be needed to store information needed by
the (also upcoming) `IgnoreMatcher`.

Differential Revision: https://phab.mercurial-scm.org/D7869

44266:9ab4830e9e3d

// GNU General Public License version 2 or any later version.

//! Functions for fiddling with files.

use crate::utils::hg_path::{HgPath, HgPathBuf};
use std::iter::FusedIterator;

use crate::utils::replace_slice;
use lazy_static::lazy_static;
use std::fs::Metadata;
use std::path::Path;

pub fn get_path_from_bytes(bytes: &[u8]) -> &Path {
    let os_str;
    #[cfg(unix)]

    }
}

impl<'a> FusedIterator for Ancestors<'a> {}

/// Returns an iterator yielding ancestor directories of the given repository
/// path.
///
/// The path is separated by '/', and must not start with '/'.
///
/// The path itself isn't included unless it is b"" (meaning the root
/// directory.)
pub fn find_dirs<'a>(path: &'a HgPath) -> Ancestors<'a> {
    let mut dirs = Ancestors { next: Some(path) };
    if !path.is_empty() {
        dirs.next(); // skip itself
    }
    dirs
}

        let mut dirs = super::find_dirs(HgPath::new(b""));
        assert_eq!(dirs.next(), Some(HgPath::new(b"")));
        assert_eq!(dirs.next(), None);
        assert_eq!(dirs.next(), None);
    }
}

44267:0e9ac3968b56

// GNU General Public License version 2 or any later version.

//! Functions for fiddling with files.

use crate::utils::hg_path::{HgPath, HgPathBuf};

use crate::utils::replace_slice;
use lazy_static::lazy_static;
use std::fs::Metadata;
use std::iter::FusedIterator;
use std::path::Path;

pub fn get_path_from_bytes(bytes: &[u8]) -> &Path {
    let os_str;
    #[cfg(unix)]

    }
}

impl<'a> FusedIterator for Ancestors<'a> {}

/// An iterator over repository path yielding itself and its ancestors.
#[derive(Copy, Clone, Debug)]
pub(crate) struct AncestorsWithBase<'a> {
    next: Option<(&'a HgPath, &'a HgPath)>,
}

impl<'a> Iterator for AncestorsWithBase<'a> {
    type Item = (&'a HgPath, &'a HgPath);

    fn next(&mut self) -> Option<Self::Item> {
        let next = self.next;
        self.next = match self.next {
            Some((s, _)) if s.is_empty() => None,
            Some((s, _)) => Some(s.split_filename()),
            None => None,
        };
        next
    }
}

impl<'a> FusedIterator for AncestorsWithBase<'a> {}

/// Returns an iterator yielding ancestor directories of the given repository
/// path.
///
/// The path is separated by '/', and must not start with '/'.
///
/// The path itself isn't included unless it is b"" (meaning the root
/// directory.)
pub fn find_dirs<'a>(path: &'a HgPath) -> Ancestors<'a> {
    let mut dirs = Ancestors { next: Some(path) };
    if !path.is_empty() {
        dirs.next(); // skip itself
    }
    dirs
}

/// Returns an iterator yielding ancestor directories of the given repository
/// path.
///
/// The path is separated by '/', and must not start with '/'.
///
/// The path itself isn't included unless it is b"" (meaning the root
/// directory.)
pub(crate) fn find_dirs_with_base<'a>(
    path: &'a HgPath,
) -> AncestorsWithBase<'a> {
    let mut dirs = AncestorsWithBase {
        next: Some((path, HgPath::new(b""))),
    };
    if !path.is_empty() {
        dirs.next(); // skip itself
    }
    dirs
}

        let mut dirs = super::find_dirs(HgPath::new(b""));
        assert_eq!(dirs.next(), Some(HgPath::new(b"")));
        assert_eq!(dirs.next(), None);
        assert_eq!(dirs.next(), None);
    }

    #[test]
    fn test_find_dirs_with_base_some() {
        let mut dirs = super::find_dirs_with_base(HgPath::new(b"foo/bar/baz"));
        assert_eq!(
            dirs.next(),
            Some((HgPath::new(b"foo/bar"), HgPath::new(b"baz")))
        );
        assert_eq!(
            dirs.next(),
            Some((HgPath::new(b"foo"), HgPath::new(b"bar")))
        );
        assert_eq!(dirs.next(), Some((HgPath::new(b""), HgPath::new(b"foo"))));
        assert_eq!(dirs.next(), None);
        assert_eq!(dirs.next(), None);
    }

    #[test]
    fn test_find_dirs_with_base_empty() {
        let mut dirs = super::find_dirs_with_base(HgPath::new(b""));
        assert_eq!(dirs.next(), Some((HgPath::new(b""), HgPath::new(b""))));
        assert_eq!(dirs.next(), None);
        assert_eq!(dirs.next(), None);
    }
}