All: Proper handling of Unicode file paths

CHANGES

@@ -91,6 +91,7 @@ Misc:
  - SDL: Clean up GL context
  - GBA Audio: Implement audio reset for channels A/B
  - GBA Hardware: Backport generic RTC source into core
+ - All: Proper handling of Unicode file paths
 
 0.2.1: (2015-05-13)
 Bugfixes:

src/gba/supervisor/config.c

@@ -133,10 +133,15 @@ void GBAConfigDirectory(char* out, size_t outLength) {
 	snprintf(out, outLength, "%s/.config/%s", home, binaryName);
 	mkdir(out, 0755);
 #else
-	char home[MAX_PATH];
-	SHGetFolderPath(0, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT, home);
-	snprintf(out, outLength, "%s\\%s", home, projectName);
-	CreateDirectoryA(out, NULL);
+	wchar_t* home;
+	wchar_t wpath[MAX_PATH];
+	wchar_t wprojectName[MAX_PATH];
+	SHGetKnownFolderPath(&FOLDERID_RoamingAppData, 0, NULL, &home);
+	MultiByteToWideChar(CP_UTF8, 0, projectName, -1, wprojectName, MAX_PATH);
+	StringCchPrintfW(wpath, MAX_PATH, L"%ws\\%ws", home, wprojectName);
+	CoTaskMemFree(home);
+	CreateDirectoryW(wpath, NULL);
+	WideCharToMultiByte(CP_UTF8, 0, wpath, -1, out, outLength, 0, 0);
 #endif
 }
 

src/platform/qt/VFileDevice.cpp

@@ -27,5 +27,5 @@ qint64 VFileDevice::size() const {
 }
 
 VFile* VFileDevice::open(QString path, int mode) {
-	return VFileOpen(path.toLocal8Bit().constData(), mode);
+	return VFileOpen(path.toUtf8().constData(), mode);
 }

src/util/vfs/vfs-fd.c

@@ -9,6 +9,8 @@
 #include <sys/stat.h>
 #ifndef _WIN32
 #include <sys/mman.h>
+#else
+#include <windows.h>
 #endif
 
 struct VFileFD {
@@ -35,8 +37,12 @@ struct VFile* VFileOpenFD(const char* path, int flags) {
 	}
 #ifdef _WIN32
 	flags |= O_BINARY;
-#endif
+	wchar_t wpath[PATH_MAX];
+	MultiByteToWideChar(CP_UTF8, 0, path, -1, wpath, sizeof(wpath) / sizeof(*wpath));
+	int fd = _wopen(wpath, flags, 0666);
+#else
 	int fd = open(path, flags, 0666);
+#endif
 	return VFileFromFD(fd);
 }