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Rollup merge of #43983 - ids1024:redox-path-prefix, r=alexcrichton

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Redox: correct is_absolute() and has_root()

This is awkward, but representing schemes properly in `Components` is not easily possible without breaking backwards compatibility, as discussed earlier in https://github.com/rust-lang/rust/pull/37702.

But these methods can be corrected anyway.
This commit is contained in:
Corey Farwell 2017-08-23 08:44:25 -04:00 committed by GitHub
commit dd58d4e45e
1 changed files with 13 additions and 3 deletions
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16
src/libstd/path.rs
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@ -323,6 +323,11 @@ unsafe fn u8_slice_as_os_str(s: &[u8]) -> &OsStr {
mem::transmute(s)
}
// Detect scheme on Redox
fn has_redox_scheme(s: &[u8]) -> bool {
cfg!(target_os = "redox") && s.split(|b| *b == b'/').next().unwrap_or(b"").contains(&b':')
}
////////////////////////////////////////////////////////////////////////////////
// Cross-platform, iterator-independent parsing
////////////////////////////////////////////////////////////////////////////////
@ -1685,8 +1690,12 @@ impl Path {
#[stable(feature = "rust1", since = "1.0.0")]
#[allow(deprecated)]
pub fn is_absolute(&self) -> bool {
// FIXME: Remove target_os = "redox" and allow Redox prefixes
self.has_root() && (cfg!(unix) || cfg!(target_os = "redox") || self.prefix().is_some())
if !cfg!(target_os = "redox") {
self.has_root() && (cfg!(unix) || self.prefix().is_some())
} else {
// FIXME: Allow Redox prefixes
has_redox_scheme(self.as_u8_slice())
}
}
/// Returns `true` if the `Path` is relative, i.e. not absolute.
@ -2050,7 +2059,8 @@ impl Path {
Components {
path: self.as_u8_slice(),
prefix,
has_physical_root: has_physical_root(self.as_u8_slice(), prefix),
has_physical_root: has_physical_root(self.as_u8_slice(), prefix) ||
has_redox_scheme(self.as_u8_slice()),
front: State::Prefix,
back: State::Body,
}