Add a tool that will be useful for various tasks if/when we build LO on WSL

It is a Win32 program, not a Linux (WSL) one.

So far just one function: Convert a full Windows pathname to 8.3
format (if present). WSL does not seem to have that functionality
built-in, and doing it through some invocations of cmd.exe or a .bat
file from WSL seems very complex.

Change-Id: I4c29e2382b0230aacbd22ca6ea0814c8c4d01866
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103912
Tested-by: Jenkins
Reviewed-by: Tor Lillqvist <tml@collabora.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/solenv/wsl/wsl-lo-helper.cpp b/solenv/wsl/wsl-lo-helper.cpp
new file mode 100644
index 000000000000..9fe780dc12f6
--- /dev/null
+++ b/solenv/wsl/wsl-lo-helper.cpp
@@ -0,0 +1,69 @@
+/* -*- 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/.
+ */
+
+/*
+ * This is a tool that will be useful for various tasks if/when we build LO on WSL
+ *
+ * It is a Win32 program, not a Linux (WSL) one.
+ *
+ * So far just one function: Convert a full Windows pathname to 8.3 format (if present). WSL does
+ * not seem to have that functionality built-in, and doing it through some invocations of cmd.exe or
+ * a .bat file from WSL seems very complex.
+ */
+
+#include <cstdio>
+#include <cstring>
+
+#include <Windows.h>
+
+int wmain(int argc, wchar_t** argv)
+{
+    if (argc <= 1)
+    {
+        fprintf(stderr, "%S: Arguments expected\n", argv[0]);
+        return 1;
+    }
+
+    if (wcscmp(argv[1], L"--8.3") == 0)
+    {
+        if (argc != 3)
+        {
+            fprintf(stderr, "%S --8.3: One pathname argument expected\n", argv[0]);
+            return 1;
+        }
+
+        // The argument should be a pathname in Windows format. The
+        // output will be the 8.3 pathname if present. If not present,
+        // return failure.
+
+        wchar_t woutput[1000];
+        if (GetShortPathNameW(argv[2], woutput, sizeof(woutput) / sizeof(woutput[0])) == 0)
+        {
+            fprintf(stderr, "%S --8.3: Could not get short pathname\n", argv[0]);
+            return 1;
+        }
+
+        char output[1000];
+        if (WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, woutput, -1, output, sizeof(output),
+                                NULL, NULL)
+            == 0)
+        {
+            fprintf(stderr, "%S --8.3: Could not convert result to UTF-8\n", argv[0]);
+            return 1;
+        }
+
+        // Intentionally output no newline at end
+        printf("%s", output);
+        fflush(stdout);
+    }
+
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */