git_path/
spec.rs

1use std::ffi::OsStr;
2
3use bstr::{BStr, ByteSlice, ByteVec};
4
5use crate::Spec;
6
7impl std::convert::TryFrom<&OsStr> for Spec {
8    type Error = crate::Utf8Error;
9
10    fn try_from(value: &OsStr) -> Result<Self, Self::Error> {
11        crate::os_str_into_bstr(value).map(|value| {
12            assert_valid_hack(value);
13            Spec(value.into())
14        })
15    }
16}
17
18fn assert_valid_hack(input: &BStr) {
19    assert!(!input.contains_str(b"/../"));
20    assert!(!input.contains_str(b"/./"));
21    assert!(!input.starts_with_str(b"../"));
22    assert!(!input.starts_with_str(b"./"));
23    assert!(!input.starts_with_str(b"/"));
24}
25
26impl Spec {
27    /// Parse `input` into a `Spec` or `None` if it could not be parsed
28    // TODO: tests, actual implementation probably via `git-pathspec` to make use of the crate after all.
29    pub fn from_bytes(input: &BStr) -> Option<Self> {
30        assert_valid_hack(input);
31        Spec(input.into()).into()
32    }
33    /// Return all paths described by this path spec, using slashes on all platforms.
34    pub fn items(&self) -> impl Iterator<Item = &BStr> {
35        std::iter::once(self.0.as_bstr())
36    }
37    /// Adjust this path specification according to the given `prefix`, which may be empty to indicate we are the at work-tree root.
38    // TODO: this is a hack, needs test and time to do according to spec. This is just a minimum version to have -something-.
39    pub fn apply_prefix(&mut self, prefix: &std::path::Path) -> &Self {
40        // many more things we can't handle. `Path` never ends with trailing path separator.
41        let prefix = crate::into_bstr(prefix);
42        if !prefix.is_empty() {
43            let mut prefix = crate::to_unix_separators_on_windows(prefix);
44            {
45                let path = prefix.to_mut();
46                path.push_byte(b'/');
47                path.extend_from_slice(&self.0);
48            }
49            self.0 = prefix.into_owned();
50        }
51        self
52    }
53}
git_path/spec.rs

git_path/
spec.rs
