From 789a68ff36fffd3d25b203dc25de20c06ae16d93 Mon Sep 17 00:00:00 2001
From: John Turner <jturner.usa@gmail.com>
Date: Sat, 13 Dec 2025 05:36:26 +0000
Subject: [PATCH] read arch.list

---
 src/repo/meson.build                      |  2 +-
 src/repo/mod.rs                           | 29 +++++++++++++++++++++++
 src/repo/parsers.rs                       | 20 ++++++++++++++++
 tests/profile/mockrepo/profiles/arch.list |  2 ++
 tests/profile/read_mock_profile.rs        |  8 +++++++
 5 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 src/repo/parsers.rs
 create mode 100644 tests/profile/mockrepo/profiles/arch.list

diff --git a/src/repo/meson.build b/src/repo/meson.build
index d59b73e..e706ad9 100644
--- a/src/repo/meson.build
+++ b/src/repo/meson.build
@@ -1,4 +1,4 @@
-sources += files('mod.rs')
+sources += files('mod.rs', 'parsers.rs')
 
 subdir('ebuild')
 subdir('profile')
diff --git a/src/repo/mod.rs b/src/repo/mod.rs
index 250825b..0443afc 100644
--- a/src/repo/mod.rs
+++ b/src/repo/mod.rs
@@ -19,6 +19,7 @@ use crate::{
 };
 
 pub mod ebuild;
+mod parsers;
 pub mod profile;
 
 #[derive(Debug, thiserror::Error)]
@@ -37,6 +38,9 @@ pub enum Error {
     Profile(profile::Error),
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Get)]
+pub struct Arch(#[get(method = "get", kind = "deref")] String);
+
 #[derive(Debug, Clone, Get)]
 pub struct Repo {
     #[get(kind = "deref")]
@@ -45,6 +49,8 @@ pub struct Repo {
     name: String,
     #[get(kind = "deref")]
     package_mask: Vec<Atom>,
+    #[get(kind = "deref")]
+    arch_list: Vec<Arch>,
 }
 
 #[derive(Debug, Clone, Get)]
@@ -80,10 +86,19 @@ impl Repo {
                 Err(e) => return Err(Error::Io(package_mask_path, e)),
             };
 
+        let arch_list_path = path.as_ref().join("profiles/arch.list");
+        let arch_list = match fs::read_to_string(&arch_list_path).map(|s| read_arch_list(&s)) {
+            Ok(Ok(arch_list)) => arch_list,
+            Ok(Err(e)) => return Err(e),
+            Err(e) if matches!(e.kind(), io::ErrorKind::NotFound) => Vec::new(),
+            Err(e) => return Err(Error::Io(arch_list_path, e)),
+        };
+
         Ok(Self {
             path: path.as_ref().to_path_buf(),
             name,
             package_mask,
+            arch_list,
         })
     }
 
@@ -366,6 +381,20 @@ fn read_package_mask(input: &str) -> Result<Vec<Atom>, Error> {
         .collect())
 }
 
+fn read_arch_list(input: &str) -> Result<Vec<Arch>, Error> {
+    Ok(LineBasedFileExpr::<Arch>::parser()
+        .separated_by_with_opt_trailing(ascii_whitespace1())
+        .many()
+        .parse_finished(InputIter::new(input))
+        .map_err(|it| Error::Parser(it.rest().to_string()))?
+        .into_iter()
+        .filter_map(|expr| match expr {
+            LineBasedFileExpr::Comment => None,
+            LineBasedFileExpr::Expr(arch) => Some(arch),
+        })
+        .collect())
+}
+
 fn parse_depends(line: &str) -> Result<Vec<Depend<Atom>>, Error> {
     Depend::<Atom>::parser()
         .separated_by(ascii_whitespace1())
diff --git a/src/repo/parsers.rs b/src/repo/parsers.rs
new file mode 100644
index 0000000..ccef666
--- /dev/null
+++ b/src/repo/parsers.rs
@@ -0,0 +1,20 @@
+use mon::{Parser, ParserIter, ascii_alphanumeric, one_of};
+
+use crate::{Parseable, repo::Arch};
+
+impl<'a> Parseable<'a, &'a str> for Arch {
+    type Parser = impl Parser<&'a str, Output = Self>;
+
+    fn parser() -> Self::Parser {
+        let start = ascii_alphanumeric();
+        let rest = ascii_alphanumeric()
+            .or(one_of("-".chars()))
+            .repeated()
+            .many();
+
+        start
+            .and(rest)
+            .recognize()
+            .map(|output: &str| Arch(output.to_string()))
+    }
+}
diff --git a/tests/profile/mockrepo/profiles/arch.list b/tests/profile/mockrepo/profiles/arch.list
new file mode 100644
index 0000000..afe9227
--- /dev/null
+++ b/tests/profile/mockrepo/profiles/arch.list
@@ -0,0 +1,2 @@
+amd64
+aarch64
\ No newline at end of file
diff --git a/tests/profile/read_mock_profile.rs b/tests/profile/read_mock_profile.rs
index da50216..440dce2 100644
--- a/tests/profile/read_mock_profile.rs
+++ b/tests/profile/read_mock_profile.rs
@@ -18,6 +18,14 @@ fn main() {
 
     assert_eq!(global_package_mask, vec!["app-editors/vim"]);
 
+    assert_eq!(
+        repo.arch_list()
+            .iter()
+            .map(|arch| arch.get())
+            .collect::<Vec<_>>(),
+        vec!["amd64", "aarch64"]
+    );
+
     let profile = repo
         .evaluate_profile("gentoo-desktop")
         .expect("failed to evaluate profile");