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Contents
use std::borrow::Cow;
use std::ffi::OsStr;
use std::path::Component;
/// Like `std::path::Component` except we combine `Prefix` and `RootDir` since
/// we don't support absolute paths, and `Normal` has a `Cow` instead of a
/// plain `OsStr` reference, so it can optionally own its own string.
pub(super) enum CowComponent<'borrow> {
PrefixOrRootDir,
CurDir,
ParentDir,
Normal(Cow<'borrow, OsStr>),
}
impl<'borrow> CowComponent<'borrow> {
/// Convert a `Component` into a `CowComponent` which borrows strings.
pub(super) fn borrowed(component: Component<'borrow>) -> Self {
match component {
Component::Prefix(_) | Component::RootDir => Self::PrefixOrRootDir,
Component::CurDir => Self::CurDir,
Component::ParentDir => Self::ParentDir,
Component::Normal(os_str) => Self::Normal(os_str.into()),
}
}
/// Convert a `Component` into a `CowComponent` which owns strings.
pub(super) fn owned(component: Component) -> Self {
match component {
Component::Prefix(_) | Component::RootDir => Self::PrefixOrRootDir,
Component::CurDir => Self::CurDir,
Component::ParentDir => Self::ParentDir,
Component::Normal(os_str) => Self::Normal(os_str.to_os_string().into()),
}
}
/// Test whether `self` is `Component::Normal`.
#[cfg(windows)]
pub(super) fn is_normal(&self) -> bool {
match self {
CowComponent::Normal(_) => true,
_ => false,
}
}
}
Version data entries
39 entries across 39 versions & 1 rubygems