fix: return EOF when buffer is empty

internal/bra/reader.go

@@ -43,6 +43,10 @@ func (rc *readCloser) Read(p []byte) (int, error) {
 			return 0, fmt.Errorf("bra: error buffering: %w", err)
 		}
 
+		if rc.buf.Len() == 0 { // Buffer is empty and read closer returned EOF; no more data available
+			return 0, io.EOF
+		}
+
 		if rc.buf.Len() < rc.conv.Size() {
 			rc.n = rc.buf.Len()
 		}

reader_test.go

@@ -434,6 +434,30 @@ func TestFS(t *testing.T) {
 	}
 }
 
+func TestRead(t *testing.T) {
+	t.Parallel()
+
+	r, err := sevenzip.OpenReader(filepath.Join("testdata", "eof-read.7z"))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer func() {
+		if err := r.Close(); err != nil {
+			t.Fatal(err)
+		}
+	}()
+
+	file, err := r.Open("Plug 1.2/Plug 1.2.exe")
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = io.ReadAll(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
 func FuzzNewReaderWithPassword(f *testing.F) {
 	b, err := os.ReadFile(filepath.Join("testdata", "copy.7z"))
 	if err != nil {