3 files changed, 26 insertions, 21 deletions

diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index c3061479a..c3ae03052 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -85,7 +85,7 @@ bool Exists(const std::string &filename)
     StripTailDirSlashes(copy);
 
 #ifdef _WIN32
-    int result = _tstat64(Common::UTF8ToTStr(copy).c_str(), &file_info);
+    int result = _wstat64(Common::UTF8ToUTF16W(copy).c_str(), &file_info);
 #else
     int result = stat64(copy.c_str(), &file_info);
 #endif
@@ -102,7 +102,7 @@ bool IsDirectory(const std::string &filename)
     StripTailDirSlashes(copy);
 
 #ifdef _WIN32
-    int result = _tstat64(Common::UTF8ToTStr(copy).c_str(), &file_info);
+    int result = _wstat64(Common::UTF8ToUTF16W(copy).c_str(), &file_info);
 #else
     int result = stat64(copy.c_str(), &file_info);
 #endif
@@ -138,7 +138,7 @@ bool Delete(const std::string &filename)
     }
 
 #ifdef _WIN32
-    if (!DeleteFile(Common::UTF8ToTStr(filename).c_str()))
+    if (!DeleteFileW(Common::UTF8ToUTF16W(filename).c_str()))
     {
         LOG_ERROR(Common_Filesystem, "DeleteFile failed on %s: %s",
                  filename.c_str(), GetLastErrorMsg());
@@ -160,7 +160,7 @@ bool CreateDir(const std::string &path)
 {
     LOG_TRACE(Common_Filesystem, "directory %s", path.c_str());
 #ifdef _WIN32
-    if (::CreateDirectory(Common::UTF8ToTStr(path).c_str(), nullptr))
+    if (::CreateDirectoryW(Common::UTF8ToUTF16W(path).c_str(), nullptr))
         return true;
     DWORD error = GetLastError();
     if (error == ERROR_ALREADY_EXISTS)
@@ -241,7 +241,7 @@ bool DeleteDir(const std::string &filename)
     }
 
 #ifdef _WIN32
-    if (::RemoveDirectory(Common::UTF8ToTStr(filename).c_str()))
+    if (::RemoveDirectoryW(Common::UTF8ToUTF16W(filename).c_str()))
         return true;
 #else
     if (rmdir(filename.c_str()) == 0)
@@ -257,8 +257,13 @@ bool Rename(const std::string &srcFilename, const std::string &destFilename)
 {
     LOG_TRACE(Common_Filesystem, "%s --> %s",
             srcFilename.c_str(), destFilename.c_str());
+#ifdef _WIN32
+    if (_wrename(Common::UTF8ToUTF16W(srcFilename).c_str(), Common::UTF8ToUTF16W(destFilename).c_str()) == 0)
+        return true;
+#else
     if (rename(srcFilename.c_str(), destFilename.c_str()) == 0)
         return true;
+#endif
     LOG_ERROR(Common_Filesystem, "failed %s --> %s: %s",
               srcFilename.c_str(), destFilename.c_str(), GetLastErrorMsg());
     return false;
@@ -270,7 +275,7 @@ bool Copy(const std::string &srcFilename, const std::string &destFilename)
     LOG_TRACE(Common_Filesystem, "%s --> %s",
             srcFilename.c_str(), destFilename.c_str());
 #ifdef _WIN32
-    if (CopyFile(Common::UTF8ToTStr(srcFilename).c_str(), Common::UTF8ToTStr(destFilename).c_str(), FALSE))
+    if (CopyFileW(Common::UTF8ToUTF16W(srcFilename).c_str(), Common::UTF8ToUTF16W(destFilename).c_str(), FALSE))
         return true;
 
     LOG_ERROR(Common_Filesystem, "failed %s --> %s: %s",
@@ -358,7 +363,7 @@ u64 GetSize(const std::string &filename)
 
     struct stat64 buf;
 #ifdef _WIN32
-    if (_tstat64(Common::UTF8ToTStr(filename).c_str(), &buf) == 0)
+    if (_wstat64(Common::UTF8ToUTF16W(filename).c_str(), &buf) == 0)
 #else
     if (stat64(filename.c_str(), &buf) == 0)
 #endif
@@ -432,16 +437,16 @@ bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string &directo
 
 #ifdef _WIN32
     // Find the first file in the directory.
-    WIN32_FIND_DATA ffd;
+    WIN32_FIND_DATAW ffd;
 
-    HANDLE handle_find = FindFirstFile(Common::UTF8ToTStr(directory + "\\*").c_str(), &ffd);
+    HANDLE handle_find = FindFirstFileW(Common::UTF8ToUTF16W(directory + "\\*").c_str(), &ffd);
     if (handle_find == INVALID_HANDLE_VALUE) {
         FindClose(handle_find);
         return false;
     }
     // windows loop
     do {
-        const std::string virtual_name(Common::TStrToUTF8(ffd.cFileName));
+        const std::string virtual_name(Common::UTF16ToUTF8(ffd.cFileName));
 #else
     struct dirent dirent, *result = nullptr;
 
@@ -465,7 +470,7 @@ bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string &directo
         found_entries += ret_entries;
 
 #ifdef _WIN32
-    } while (FindNextFile(handle_find, &ffd) != 0);
+    } while (FindNextFileW(handle_find, &ffd) != 0);
     FindClose(handle_find);
 #else
     }
@@ -900,7 +905,7 @@ bool IOFile::Open(const std::string& filename, const char openmode[])
 {
     Close();
 #ifdef _WIN32
-    _tfopen_s(&m_file, Common::UTF8ToTStr(filename).c_str(), Common::UTF8ToTStr(openmode).c_str());
+    _wfopen_s(&m_file, Common::UTF8ToUTF16W(filename).c_str(), Common::UTF8ToUTF16W(openmode).c_str());
 #else
     m_file = fopen(filename.c_str(), openmode);
 #endif
diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index 6d6fc591f..f0aa072db 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -320,27 +320,27 @@ std::u16string UTF8ToUTF16(const std::string& input)
 #endif
 }
 
-static std::string UTF16ToUTF8(const std::wstring& input)
+static std::wstring CPToUTF16(u32 code_page, const std::string& input)
 {
-    auto const size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()), nullptr, 0, nullptr, nullptr);
+    auto const size = MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
 
-    std::string output;
+    std::wstring output;
     output.resize(size);
 
-    if (size == 0 || size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()), &output[0], static_cast<int>(output.size()), nullptr, nullptr))
+    if (size == 0 || size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), &output[0], static_cast<int>(output.size())))
         output.clear();
 
     return output;
 }
 
-static std::wstring CPToUTF16(u32 code_page, const std::string& input)
+std::string UTF16ToUTF8(const std::wstring& input)
 {
-    auto const size = MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
+    auto const size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()), nullptr, 0, nullptr, nullptr);
 
-    std::wstring output;
+    std::string output;
     output.resize(size);
 
-    if (size == 0 || size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), &output[0], static_cast<int>(output.size())))
+    if (size == 0 || size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()), &output[0], static_cast<int>(output.size()), nullptr, nullptr))
         output.clear();
 
     return output;
diff --git a/src/common/string_util.h b/src/common/string_util.h
index c5c474c6f..89d9f133e 100644
--- a/src/common/string_util.h
+++ b/src/common/string_util.h
@@ -95,7 +95,7 @@ std::string CP1252ToUTF8(const std::string& str);
 std::string SHIFTJISToUTF8(const std::string& str);
 
 #ifdef _WIN32
-
+std::string UTF16ToUTF8(const std::wstring& input);
 std::wstring UTF8ToUTF16W(const std::string& str);
 
 #ifdef _UNICODE