From e2fd0c0f9affa65bf2291a83d48b16919d59fd7c Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Mon, 12 Aug 2024 14:19:29 +0200
Subject: [PATCH] Add `read_dir_entries_recursive` in `run_make_support`

---
 src/tools/run-make-support/src/path_helpers.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/tools/run-make-support/src/path_helpers.rs b/src/tools/run-make-support/src/path_helpers.rs
index b788bc6ef30..1e6e44c4584 100644
--- a/src/tools/run-make-support/src/path_helpers.rs
+++ b/src/tools/run-make-support/src/path_helpers.rs
@@ -84,3 +84,18 @@ pub fn has_suffix<P: AsRef<Path>>(path: P, suffix: &str) -> bool {
 pub fn filename_contains<P: AsRef<Path>>(path: P, needle: &str) -> bool {
     path.as_ref().file_name().is_some_and(|name| name.to_str().unwrap().contains(needle))
 }
+
+/// Helper for reading entries in a given directory and its children.
+pub fn read_dir_entries_recursive<P: AsRef<Path>, F: FnMut(&Path)>(dir: P, mut callback: F) {
+    fn read_dir_entries_recursive_inner<P: AsRef<Path>, F: FnMut(&Path)>(dir: P, callback: &mut F) {
+        for entry in rfs::read_dir(dir) {
+            let path = entry.unwrap().path();
+            callback(&path);
+            if path.is_dir() {
+                read_dir_entries_recursive_inner(path, callback);
+            }
+        }
+    }
+
+    read_dir_entries_recursive_inner(dir, &mut callback);
+}