vcpkg/ports/opencv/filesystem-uwp.patch

diff --git a/modules/core/src/utils/filesystem.cpp b/modules/core/src/utils/filesystem.cpp
index 266a92f..1d5a302 100644
--- a/modules/core/src/utils/filesystem.cpp
+++ b/modules/core/src/utils/filesystem.cpp
@@ -186,7 +186,7 @@ bool createDirectory(const cv::String& path)
     wchar_t wpath[MAX_PATH];
     size_t copied = mbstowcs(wpath, path.c_str(), MAX_PATH);
     CV_Assert((copied != MAX_PATH) && (copied != (size_t)-1));
-    int result = CreateDirectoryA(wpath, NULL) ? 0 : -1;
+    int result = CreateDirectoryW(wpath, NULL) ? 0 : -1;
 #else
     int result = _mkdir(path.c_str());
 #endif
@@ -248,8 +248,16 @@ struct FileLock::Impl
         int numRetries = 5;
         do
         {
+#ifdef WINRT
+            wchar_t wpath[MAX_PATH];
+            size_t copied = mbstowcs(wpath, fname, MAX_PATH);
+            CV_Assert((copied != MAX_PATH) && (copied != (size_t)-1));
+            handle = ::CreateFile2(wpath, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                OPEN_EXISTING, NULL);
+#else
             handle = ::CreateFileA(fname, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                                 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+#endif
             if (INVALID_HANDLE_VALUE == handle)
             {
                 if (ERROR_SHARING_VIOLATION == GetLastError())
@@ -399,7 +407,9 @@ cv::String getCacheDirectory(const char* sub_directory_name, const char* configu
     if (cache_path.empty())
     {
         cv::String default_cache_path;
-#ifdef _WIN32
+#if WINRT
+        // no defaults
+#elif defined _WIN32
         char tmp_path_buf[MAX_PATH+1] = {0};
         DWORD res = GetTempPath(MAX_PATH, tmp_path_buf);
         if (res > 0 && res <= MAX_PATH)