GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcurses/widechar/lib_unget_wch.c Lines: 0 26 0.0 %
Date: 2017-11-13 Branches: 0 16 0.0 %

Line Branch Exec Source
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/* $OpenBSD: lib_unget_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $ */
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/****************************************************************************
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 * Copyright (c) 2002-2007,2008 Free Software Foundation, Inc.              *
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 *                                                                          *
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 * Permission is hereby granted, free of charge, to any person obtaining a  *
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 * copy of this software and associated documentation files (the            *
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 * "Software"), to deal in the Software without restriction, including      *
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 * without limitation the rights to use, copy, modify, merge, publish,      *
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 * distribute, distribute with modifications, sublicense, and/or sell       *
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 * copies of the Software, and to permit persons to whom the Software is    *
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 * furnished to do so, subject to the following conditions:                 *
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 *                                                                          *
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 * The above copyright notice and this permission notice shall be included  *
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 * in all copies or substantial portions of the Software.                   *
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 *                                                                          *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
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 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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 *                                                                          *
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 * Except as contained in this notice, the name(s) of the above copyright   *
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 * holders shall not be used in advertising or otherwise to promote the     *
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 * sale, use or other dealings in this Software without prior written       *
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 * authorization.                                                           *
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 ****************************************************************************/
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/****************************************************************************
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 *  Author: Thomas E. Dickey 2002                                           *
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 ****************************************************************************/
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/*
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**	lib_unget_wch.c
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**
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**	The routine unget_wch().
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**
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*/
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#include <curses.priv.h>
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MODULE_ID("$Id: lib_unget_wch.c,v 1.1 2010/09/06 17:26:17 nicm Exp $")
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/*
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 * Wrapper for wcrtomb() which obtains the length needed for the given
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 * wide-character 'source'.
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 */
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NCURSES_EXPORT(size_t)
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_nc_wcrtomb(char *target, wchar_t source, mbstate_t * state)
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{
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    int result;
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    if (target == 0) {
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	wchar_t temp[2];
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	const wchar_t *tempp = temp;
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	temp[0] = source;
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	temp[1] = 0;
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	result = wcsrtombs(NULL, &tempp, 0, state);
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    } else {
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	result = wcrtomb(target, source, state);
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    }
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    if (!isEILSEQ(result) && (result == 0))
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	result = 1;
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    return result;
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}
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NCURSES_EXPORT(int)
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unget_wch(const wchar_t wch)
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{
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    int result = OK;
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    mbstate_t state;
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    size_t length;
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    int n;
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    T((T_CALLED("unget_wch(%#lx)"), (unsigned long) wch));
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    init_mb(state);
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    length = _nc_wcrtomb(0, wch, &state);
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    if (length != (size_t) (-1)
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	&& length != 0) {
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	char *string;
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	if ((string = (char *) malloc(length)) != 0) {
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	    init_mb(state);
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	    wcrtomb(string, wch, &state);
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	    for (n = (int) (length - 1); n >= 0; --n) {
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		if (_nc_ungetch(SP, string[n]) != OK) {
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		    result = ERR;
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		    break;
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		}
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	    }
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	    free(string);
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	} else {
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	    result = ERR;
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	}
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    } else {
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	result = ERR;
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    }
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    returnCode(result);
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}