add tools::Long typedef and use it in tools

first step to switching long to a 64-bit type on 64-bit windows

Change-Id: I640d807426dfe713c7a8984ef560575f8288dbeb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/104516
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 33 insertions, 0 deletions

diff --git a/include/tools/long.hxx b/include/tools/long.hxx
new file mode 100644
index 000000000000..0a633e0f23cc
--- /dev/null
+++ b/include/tools/long.hxx
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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 <sal/types.h>
+
+/**
+ * We have an unfortunate problem in that, on Windows (both 32 and 64-bit), long is always 32-bit.
+ * But on Linux (64-bit) long is 64-bit. Which leads to nasty situations where things that work
+ * on Linux, fail on Windows.
+ * So.....,
+ * (1) introduce a typedef that will replace all usage of long in our codebase.
+ * (2) to start with, that typedef acts that same as the long it replaces
+ * (3) once the replacement is complete, this typedef will, on windows, become 64-bit.
+ * (4) and once the fallout from (3) is fixed, we can start replacing tools::Long with things
+ *     like sal_Int64.
+ */
+namespace tools
+{
+typedef long Long;
+typedef unsigned long ULong;
+// stage 3:
+//typedef sal_Int64 Long;
+//typedef sal_uInt64 ULong;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */