From d6fcfa2db7c95dd540a2c55cb74e284710e42ad1 Mon Sep 17 00:00:00 2001
From: Andrej Babic <andrej.babic@psi.ch>
Date: Wed, 15 Apr 2020 16:13:48 +0200
Subject: [PATCH] Move buffer utils to new header

---
 sf-buffer/src/buffer_utils.hpp | 35 ++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 sf-buffer/src/buffer_utils.hpp

diff --git a/sf-buffer/src/buffer_utils.hpp b/sf-buffer/src/buffer_utils.hpp
new file mode 100644
index 0000000..92c7819
--- /dev/null
+++ b/sf-buffer/src/buffer_utils.hpp
@@ -0,0 +1,35 @@
+#ifndef BUFFER-UTILS_HPP
+#define BUFFER-UTILS_HPP
+
+const size_t FILE_MOD = 1000;
+const size_t FOLDER_MOD = 100000;
+
+std::string get_filename(
+        std::string root_folder,
+        std::string device_name,
+        uint64_t pulse_id)
+{
+    uint64_t folder_base = pulse_id / FOLDER_MOD;
+    folder_base *= FOLDER_MOD;
+
+    uint64_t file_base = pulse_id / FILE_MOD;
+    file_base *= FILE_MOD;
+
+    std::stringstream folder;
+    folder << root_folder << "/";
+    folder << device_name << "/";
+    folder << folder_base << "/";
+    folder << file_base << ".h5";
+
+    return folder.str();
+}
+
+std::size_t get_file_frame_index(uint64_t pulse_id)
+{
+    uint64_t file_base = pulse_id / FILE_MOD;
+    file_base *= FILE_MOD;
+
+    return pulse_id - file_base;
+}
+
+#endif //BUFFER-UTILS_HPP