From bbedbbc41b66a3803c3e675adfaa1ff38accfb37 Mon Sep 17 00:00:00 2001
From: qydysky <32743305+qydysky@users.noreply.github.com>
Date: Sat, 4 Mar 2023 19:10:08 +0800
Subject: [PATCH] Add

---
 slice/Slice.go      | 15 +++++++++++++++
 slice/Slice_test.go | 26 ++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/slice/Slice.go b/slice/Slice.go
index 2a07109..57feeff 100644
--- a/slice/Slice.go
+++ b/slice/Slice.go
@@ -159,3 +159,18 @@ func (t *Buf[T]) GetCopyBuf() (buf []T) {
 	copy(buf, t.buf[:t.bufsize])
 	return
 }
+
+// Need to lock when processing buf or Make sure buf only processing by GetBufCopy
+func (t *Buf[T]) GetBufCopy(buf *[]T) {
+	t.RLock()
+	defer t.RUnlock()
+
+	if len(*buf) == 0 {
+		*buf = make([]T, t.bufsize)
+	} else if len(*buf) < t.bufsize {
+		*buf = append(*buf, make([]T, t.bufsize-len(*buf))...)
+	} else {
+		*buf = (*buf)[:t.bufsize]
+	}
+	copy(*buf, t.buf[:t.bufsize])
+}
diff --git a/slice/Slice_test.go b/slice/Slice_test.go
index a093095..be386e4 100644
--- a/slice/Slice_test.go
+++ b/slice/Slice_test.go
@@ -79,3 +79,29 @@ func TestXxx2(t *testing.T) {
 		t.Fatal()
 	}
 }
+
+func TestXxx3(t *testing.T) {
+	var c = New[byte]()
+	var b = []byte{}
+	c.Append([]byte("12345"))
+	c.Append([]byte("67890"))
+	c.GetBufCopy(&b)
+	c.Reset()
+	if !bytes.Equal(b, []byte("1234567890")) {
+		t.Fatal(string(b))
+	}
+	c.Append([]byte("abc"))
+	c.Append([]byte("defg"))
+	c.GetBufCopy(&b)
+	c.Reset()
+	if !bytes.Equal(b, []byte("abcdefg")) {
+		t.Fatal()
+	}
+	c.Append([]byte("akjsdhfaksdjhf"))
+	c.Append([]byte("9834719203857"))
+	c.GetBufCopy(&b)
+	c.Reset()
+	if !bytes.Equal(b, []byte("akjsdhfaksdjhf9834719203857")) {
+		t.Fatal()
+	}
+}
-- 
2.39.2