read eapi file in profiles

src/repo/profile/mod.rs

@@ -8,7 +8,7 @@ use std::{
 use get::Get;
 use itertools::Itertools;
 
-use crate::{atom::Atom, useflag::UseFlag};
+use crate::{Parseable, atom::Atom, repo::ebuild::Eapi, useflag::UseFlag};
 
 mod make_defaults;
 mod package;
@@ -43,12 +43,15 @@ pub enum Error {
     PackageUse(#[from] package_use::Error),
     #[error("error evaluating use settings: {0}")]
     Use(#[from] useflags::Error),
+    #[error("parser error: {0}")]
+    Parser(String),
 }
 
 #[derive(Debug, Clone, Get)]
 pub struct Profile {
     #[get(kind = "deref")]
     path: PathBuf,
+    eapi: Option<Eapi>,
     #[get(kind = "deref")]
     parents: Vec<Profile>,
     make_defaults: HashMap<String, String>,
@@ -87,6 +90,16 @@ impl Profile {
             Err(e) => return Err(Error::Io(parents_path, e)),
         };
 
+        let eapi_path = path.as_ref().join("eapi");
+        let eapi = match fs::read_to_string(&eapi_path)
+            .map(|s| Eapi::parse(s.trim()).map_err(str::to_string))
+        {
+            Ok(Ok(eapi)) => Some(eapi),
+            Ok(Err(rest)) => return Err(Error::Parser(rest)),
+            Err(e) if matches!(e.kind(), io::ErrorKind::NotFound) => None,
+            Err(e) => return Err(Error::Io(eapi_path, e)),
+        };
+
         let make_defaults = make_defaults::evaluate(&parents, &path)?;
 
         let packages = packages::evaluate(&parents, &path)?;
@@ -110,6 +123,7 @@ impl Profile {
         Ok(Self {
             path: path.as_ref().to_path_buf(),
             parents,
+            eapi,
             make_defaults,
             packages,
             package_mask,