/* $OpenBSD: lib_get_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */

/****************************************************************************

 * Copyright (c) 2002-2007,2008 Free Software Foundation, Inc.              *

 *                                                                          *

 * Permission is hereby granted, free of charge, to any person obtaining a  *

 * copy of this software and associated documentation files (the            *

 * "Software"), to deal in the Software without restriction, including      *

 * without limitation the rights to use, copy, modify, merge, publish,      *

 * distribute, distribute with modifications, sublicense, and/or sell       *

 * copies of the Software, and to permit persons to whom the Software is    *

 * furnished to do so, subject to the following conditions:                 *

 *                                                                          *

 * The above copyright notice and this permission notice shall be included  *

 * in all copies or substantial portions of the Software.                   *

 *                                                                          *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *

 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *

 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *

 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *

 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *

 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *

 *                                                                          *

 * Except as contained in this notice, the name(s) of the above copyright   *

 * holders shall not be used in advertising or otherwise to promote the     *

 * sale, use or other dealings in this Software without prior written       *

 * authorization.                                                           *

 ****************************************************************************/

/****************************************************************************

 *  Author: Thomas E. Dickey 2002-on                                        *

 ****************************************************************************/

/*

**	lib_get_wch.c

**

**	The routine get_wch().

**

*/

#include <curses.priv.h>

#include <ctype.h>

MODULE_ID("$Id: lib_get_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $")

#if HAVE_MBTOWC && HAVE_MBLEN

#define reset_mbytes(state) mblen(NULL, 0), mbtowc(NULL, NULL, 0)

#define count_mbytes(buffer,length,state) mblen(buffer,length)

#define check_mbytes(wch,buffer,length,state) \

	(int) mbtowc(&wch, buffer, length)

#define state_unused

#elif HAVE_MBRTOWC && HAVE_MBRLEN

#define reset_mbytes(state) init_mb(state)

#define count_mbytes(buffer,length,state) mbrlen(buffer,length,&state)

#define check_mbytes(wch,buffer,length,state) \

	(int) mbrtowc(&wch, buffer, length, &state)

#else

make an error

#endif

NCURSES_EXPORT(int)

wget_wch(WINDOW *win, wint_t *result)

{

    SCREEN *sp;

    int code;

    int status;

    size_t count = 0;

#ifndef state_unused

    mbstate_t state;

#endif

    T((T_CALLED("wget_wch(%p)"), win));

    /*

     * We can get a stream of single-byte characters and KEY_xxx codes from

     * _nc_wgetch(), while we want to return a wide character or KEY_xxx code.

     */

    _nc_lock_global(curses);

	    T(("reading %d of %d", (int) count + 1, (int) sizeof(buffer)));

							       *) 0));

		break;

		/*

		 * If we were processing an incomplete multibyte character,

		 * return an error since we have a KEY_xxx code which

		 * interrupts it.  For some cases, we could improve this by

		 * writing a new version of lib_getch.c(!), but it is not clear

		 * whether the improvement would be worth the effort.

		 */

		    code = ERR;

		}

		break;

		code = ERR;

	    } else {

			code = ERR;	/* the two calls should match */

		    }

		}

	    }

	}

    } else {

	code = ERR;

    }

    _nc_unlock_global(curses);

    T(("result %#lo", value));

}