//============================================================
//
//  sdlos_*.c - OS specific low level code
//
//  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
//
//============================================================

// standard sdl header
#include "sdlinc.h"


#define WIN32_LEAN_AND_MEAN
#include <windows.h>

// MAME headers
#include "osdcore.h"
#include "strconv.h"


//============================================================
//  get_clipboard_text_by_format
//============================================================

static char *get_clipboard_text_by_format(UINT format, char *(*convert)(LPCVOID data))
{
	char *result = NULL;
	HANDLE data_handle;
	LPVOID data;

	// check to see if this format is available
	if (IsClipboardFormatAvailable(format))
	{
		// open the clipboard
		if (OpenClipboard(NULL))
		{
			// try to access clipboard data
			data_handle = GetClipboardData(format);
			if (data_handle != NULL)
			{
				// lock the data
				data = GlobalLock(data_handle);
				if (data != NULL)
				{
					// invoke the convert
					result = (*convert)(data);

					// unlock the data
					GlobalUnlock(data_handle);
				}
			}

			// close out the clipboard
			CloseClipboard();
		}
	}
	return result;
}


//============================================================
//  convert_wide
//============================================================

static char *convert_wide(LPCVOID data)
{
	return utf8_from_wstring((LPCWSTR) data);
}



//============================================================
//  convert_ansi
//============================================================

static char *convert_ansi(LPCVOID data)
{
	return utf8_from_astring((LPCSTR) data);
}



//============================================================
//  osd_get_clipboard_text
//============================================================

char *osd_get_clipboard_text(void)
{
	char *result = NULL;

	// try to access unicode text
	if (result == NULL)
		result = get_clipboard_text_by_format(CF_UNICODETEXT, convert_wide);

	// try to access ANSI text
	if (result == NULL)
		result = get_clipboard_text_by_format(CF_TEXT, convert_ansi);

	return result;
}
