win32: add AnsiToWide/WideToAnsi functions. This change is for Lua (non-Unicode DLL) and external modules (Lua-GD, for instance).

win32/_tfwopen.cpp

@@ -198,6 +198,18 @@ MS932ToWide::MS932ToWide(const char *ms932Chars) {
    MultiByteToWideChar(932,0,ms932Chars,-1,wideChars,requiredChars);
 }
 
+AnsiToWide::AnsiToWide(const char *ansiChars) {
+	int requiredChars = MultiByteToWideChar(CP_ACP,0,ansiChars,-1,wideChars,0);
+	wideChars = new wchar_t[requiredChars];
+	MultiByteToWideChar(CP_ACP,0,ansiChars,-1,wideChars,requiredChars);
+}
+
+WideToAnsi::WideToAnsi(const wchar_t *wideChars) {
+	int requiredChars = WideCharToMultiByte(CP_ACP,0,wideChars,-1,ansiChars,0,NULL,NULL);
+	ansiChars = new char[requiredChars];
+	WideCharToMultiByte(CP_ACP,0,wideChars,-1,ansiChars,requiredChars,NULL,NULL);
+}
+
 extern "C" FILE *_tfwopen(const char *filename, const char *mode ) {
 	wchar_t mode_w[30];
 	lstrcpyn(mode_w,Utf8ToWide(mode),29);

win32/_tfwopen.h

@@ -236,6 +236,24 @@ public:
    operator wchar_t *() { return wideChars; }
 };
 
+class AnsiToWide {
+private:
+	wchar_t *wideChars;
+public:
+	AnsiToWide(const char *ansiChars);
+	~AnsiToWide() { delete [] wideChars; }
+	operator wchar_t *() { return wideChars; }
+};
+
+class WideToAnsi {
+private:
+	char *ansiChars;
+public:
+	WideToAnsi(const wchar_t *wideChars);
+	~WideToAnsi() { delete [] ansiChars; }
+	operator char *() { return ansiChars; }
+};
+
 namespace std {
 class u8nifstream: public std::ifstream
 {

win32/wsnes9x.h

@@ -218,10 +218,14 @@
 #define _tToChar WideToUtf8
 #define _tFromChar Utf8ToWide
 #define _tFromMS932 MS932ToWide
+#define _tToAnsi WideToAnsi
+#define _tFromAnsi AnsiToWide
 #else
 #define _tToChar
 #define _tFromChar
 #define _tFromMS932
+#define _tToAnsi
+#define _tFromAnsi
 #endif
 
 /****************************************************************************/