From 8a01eaa7d27216b91178212412ed1f483a2af2d7 Mon Sep 17 00:00:00 2001
From: John Lindgren <john@jlindgren.net>
Date: Thu, 30 Nov 2023 18:59:08 -0500
Subject: [PATCH] ringbuf: Add fill_with()

---
 src/libaudcore/ringbuf.h     |  9 +++++++++
 src/libaudcore/tests/test.cc | 10 ++++++++++
 2 files changed, 19 insertions(+)

diff --git a/src/libaudcore/ringbuf.h b/src/libaudcore/ringbuf.h
index 7908670d8..b470f9047 100644
--- a/src/libaudcore/ringbuf.h
+++ b/src/libaudcore/ringbuf.h
@@ -169,6 +169,15 @@ class RingBuf : private RingBufBase
         return val;
     }
 
+    template<class... Args>
+    void fill_with(Args &&... args)
+    {
+        discard();
+        add(raw(size()));
+        for (int i = 0; i < len(); i++)
+            aud::construct<T>::make(at(raw(i)), std::forward<Args>(args)...);
+    }
+
 private:
     static constexpr int raw(int len) { return len * sizeof(T); }
     static constexpr int cooked(int len) { return len / sizeof(T); }
diff --git a/src/libaudcore/tests/test.cc b/src/libaudcore/tests/test.cc
index 884e18238..dfdcd2cc0 100644
--- a/src/libaudcore/tests/test.cc
+++ b/src/libaudcore/tests/test.cc
@@ -479,6 +479,16 @@ static void test_ringbuf()
     ring.discard(5);
     assert(ring.len() == 5);
 
+    ring.fill_with("fill");
+
+    assert(ring.size() == 10);
+    assert(ring.len() == 10);
+    assert(ring.linear() == 10);
+    assert(ring.space() == 0);
+
+    for (int i = 0; i < 10; i++)
+        assert(ring[i] == String("fill"));
+
     ring.discard();
     assert(ring.len() == 0);