lib: implement CheckoutOptions::filter (hackishly)

rust-bindings/rust/tests/repo.rs

@@ -13,8 +13,8 @@ use gio::prelude::*;
 use gio::NONE_CANCELLABLE;
 use glib::prelude::*;
 use ostree::{
-    ObjectName, ObjectType, RepoCheckoutAtOptions, RepoCheckoutMode, RepoCheckoutOverwriteMode,
-    RepoDevInoCache,
+    ObjectName, ObjectType, RepoCheckoutAtOptions, RepoCheckoutFilterResult, RepoCheckoutMode,
+    RepoCheckoutOverwriteMode, RepoDevInoCache,
 };
 use std::os::unix::io::AsRawFd;
 
@@ -161,6 +161,9 @@ fn should_checkout_at_with_options() {
                 force_copy: true,
                 force_copy_zerosized: true,
                 devino_to_csum_cache: Some(RepoDevInoCache::new()),
+                filter: Some(Box::new(|_repo, _path, _stat| {
+                    RepoCheckoutFilterResult::Allow
+                })),
                 ..Default::default()
             }),
             dirfd.as_raw_fd(),
@@ -172,3 +175,36 @@ fn should_checkout_at_with_options() {
 
     assert_test_file(checkout_dir.path());
 }
+
+#[test]
+#[cfg(feature = "v2016_8")]
+fn should_checkout_at_with_filter() {
+    let test_repo = TestRepo::new();
+    let checksum = test_repo.test_commit("test");
+    let checkout_dir = tempfile::tempdir().expect("checkout dir");
+
+    let dirfd = openat::Dir::open(checkout_dir.path()).expect("openat");
+    test_repo
+        .repo
+        .checkout_at(
+            Some(&RepoCheckoutAtOptions {
+                filter: Some(Box::new(|_repo, path, _stat| {
+                    if let Some("testfile") = path.file_name().map(|s| s.to_str().unwrap()) {
+                        RepoCheckoutFilterResult::Skip
+                    } else {
+                        RepoCheckoutFilterResult::Allow
+                    }
+                })),
+                ..Default::default()
+            }),
+            dirfd.as_raw_fd(),
+            "test-checkout",
+            &checksum,
+            NONE_CANCELLABLE,
+        )
+        .expect("checkout at");
+
+    let testdir = checkout_dir.path().join("test-checkout").join("testdir");
+    assert!(std::fs::read_dir(&testdir).is_ok());
+    assert!(std::fs::File::open(&testdir.join("testfile")).is_err());
+}