rust/build_system/path.rs

71 lines
2.0 KiB
Rust

use std::fs;
use std::path::PathBuf;
#[derive(Debug, Clone)]
pub(crate) struct Dirs {
pub(crate) source_dir: PathBuf,
pub(crate) download_dir: PathBuf,
pub(crate) build_dir: PathBuf,
pub(crate) dist_dir: PathBuf,
}
#[doc(hidden)]
#[derive(Debug, Copy, Clone)]
pub(crate) enum PathBase {
Source,
Download,
Build,
Dist,
}
impl PathBase {
fn to_path(self, dirs: &Dirs) -> PathBuf {
match self {
PathBase::Source => dirs.source_dir.clone(),
PathBase::Download => dirs.download_dir.clone(),
PathBase::Build => dirs.build_dir.clone(),
PathBase::Dist => dirs.dist_dir.clone(),
}
}
}
#[derive(Debug, Copy, Clone)]
pub(crate) enum RelPath {
Base(PathBase),
Join(&'static RelPath, &'static str),
}
impl RelPath {
pub(crate) const SOURCE: RelPath = RelPath::Base(PathBase::Source);
pub(crate) const DOWNLOAD: RelPath = RelPath::Base(PathBase::Download);
pub(crate) const BUILD: RelPath = RelPath::Base(PathBase::Build);
pub(crate) const DIST: RelPath = RelPath::Base(PathBase::Dist);
pub(crate) const SCRIPTS: RelPath = RelPath::SOURCE.join("scripts");
pub(crate) const BUILD_SYSROOT: RelPath = RelPath::SOURCE.join("build_sysroot");
pub(crate) const PATCHES: RelPath = RelPath::SOURCE.join("patches");
pub(crate) const fn join(&'static self, suffix: &'static str) -> RelPath {
RelPath::Join(self, suffix)
}
pub(crate) fn to_path(&self, dirs: &Dirs) -> PathBuf {
match self {
RelPath::Base(base) => base.to_path(dirs),
RelPath::Join(base, suffix) => base.to_path(dirs).join(suffix),
}
}
pub(crate) fn ensure_exists(&self, dirs: &Dirs) {
fs::create_dir_all(self.to_path(dirs)).unwrap();
}
pub(crate) fn ensure_fresh(&self, dirs: &Dirs) {
let path = self.to_path(dirs);
if path.exists() {
fs::remove_dir_all(&path).unwrap();
}
fs::create_dir_all(path).unwrap();
}
}