//============================================================
//
//  strconv.c - SDL (POSIX) string conversion
//
//  Copyright (c) 1996-2010, Nicola Salmoria and the MAME Team.
//  Visit http://mamedev.org for licensing and usage restrictions.
//
//  SDLMAME by Olivier Galibert and R. Belmont
//
//============================================================

#ifdef SDLMAME_WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif

#include <stdlib.h>

// MAMEOS headers
#include "strconv.h"
#include "unicode.h"

#ifdef SDLMAME_WIN32
//============================================================
//  utf8_from_astring
//============================================================

char *utf8_from_astring(const CHAR *astring)
{
	WCHAR *wstring;
	int char_count;
	CHAR *result;

	// convert "ANSI code page" string to UTF-16
	char_count = MultiByteToWideChar(CP_ACP, 0, astring, -1, NULL, 0);
	wstring = (WCHAR *)alloca(char_count * sizeof(*wstring));
	MultiByteToWideChar(CP_ACP, 0, astring, -1, wstring, char_count);

	// convert UTF-16 to MAME string (UTF-8)
	char_count = WideCharToMultiByte(CP_UTF8, 0, wstring, -1, NULL, 0, NULL, NULL);
	result = (CHAR *)osd_malloc_array(char_count * sizeof(*result));
	if (result != NULL)
		WideCharToMultiByte(CP_UTF8, 0, wstring, -1, result, char_count, NULL, NULL);

	return result;
}

//============================================================
//  utf8_from_wstring
//============================================================

char *utf8_from_wstring(const WCHAR *wstring)
{
	int char_count;
	char *result;

	// convert UTF-16 to MAME string (UTF-8)
	char_count = WideCharToMultiByte(CP_UTF8, 0, wstring, -1, NULL, 0, NULL, NULL);
	result = (char *)osd_malloc_array(char_count * sizeof(*result));
	if (result != NULL)
		WideCharToMultiByte(CP_UTF8, 0, wstring, -1, result, char_count, NULL, NULL);

	return result;
}
#endif

//============================================================
//  osd_uchar_from_osdchar
//============================================================

int osd_uchar_from_osdchar(unicode_char *uchar, const char *osdchar, size_t count)
{
	wchar_t wch;

	count = mbstowcs(&wch, (char *)osdchar, 1);
	if (count != -1)
		*uchar = wch;
	else
		*uchar = 0;

	return count;
}

