1 files changed, 27 insertions, 0 deletions
diff --git a/src/libixion/utf8.hpp b/src/libixion/utf8.hpp
new file mode 100644
index 0000000..56962b9
--- /dev/null
+++ b/src/libixion/utf8.hpp
@@ -0,0 +1,27 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <vector>
+#include <string>
+
+namespace ixion { namespace detail {
+
+/**
+ * Obtains the positions of the first bytes of the unicode characters.
+ *
+ * @param s input string encoded in utf-8.
+ *
+ * @return a sequence of the positions.  The size of the sequence equals the
+ *         logical length of the utf-8 string.
+ */
+std::vector<std::size_t> calc_utf8_byte_positions(const std::string& s);
+
+}}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */