139f2269fSPeter Wemm /**************************************************************************** 239f2269fSPeter Wemm * Copyright (c) 2002 Free Software Foundation, Inc. * 339f2269fSPeter Wemm * * 439f2269fSPeter Wemm * Permission is hereby granted, free of charge, to any person obtaining a * 539f2269fSPeter Wemm * copy of this software and associated documentation files (the * 639f2269fSPeter Wemm * "Software"), to deal in the Software without restriction, including * 739f2269fSPeter Wemm * without limitation the rights to use, copy, modify, merge, publish, * 839f2269fSPeter Wemm * distribute, distribute with modifications, sublicense, and/or sell * 939f2269fSPeter Wemm * copies of the Software, and to permit persons to whom the Software is * 1039f2269fSPeter Wemm * furnished to do so, subject to the following conditions: * 1139f2269fSPeter Wemm * * 1239f2269fSPeter Wemm * The above copyright notice and this permission notice shall be included * 1339f2269fSPeter Wemm * in all copies or substantial portions of the Software. * 1439f2269fSPeter Wemm * * 1539f2269fSPeter Wemm * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 1639f2269fSPeter Wemm * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 1739f2269fSPeter Wemm * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 1839f2269fSPeter Wemm * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 1939f2269fSPeter Wemm * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 2039f2269fSPeter Wemm * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 2139f2269fSPeter Wemm * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 2239f2269fSPeter Wemm * * 2339f2269fSPeter Wemm * Except as contained in this notice, the name(s) of the above copyright * 2439f2269fSPeter Wemm * holders shall not be used in advertising or otherwise to promote the * 2539f2269fSPeter Wemm * sale, use or other dealings in this Software without prior written * 2639f2269fSPeter Wemm * authorization. * 2739f2269fSPeter Wemm ****************************************************************************/ 2839f2269fSPeter Wemm 2939f2269fSPeter Wemm /**************************************************************************** 3039f2269fSPeter Wemm * Author: Thomas E. Dickey 2002 * 3139f2269fSPeter Wemm ****************************************************************************/ 3239f2269fSPeter Wemm 3339f2269fSPeter Wemm /* 3439f2269fSPeter Wemm ** lib_unget_wch.c 3539f2269fSPeter Wemm ** 3639f2269fSPeter Wemm ** The routine unget_wch(). 3739f2269fSPeter Wemm ** 3839f2269fSPeter Wemm */ 3939f2269fSPeter Wemm 4039f2269fSPeter Wemm #include <curses.priv.h> 4139f2269fSPeter Wemm 4239f2269fSPeter Wemm MODULE_ID("$Id: lib_unget_wch.c,v 1.2 2002/03/17 00:01:38 tom Exp $") 4339f2269fSPeter Wemm 4439f2269fSPeter Wemm NCURSES_EXPORT(int) 4539f2269fSPeter Wemm unget_wch(const wchar_t wch) 4639f2269fSPeter Wemm { 4739f2269fSPeter Wemm int result = OK; 4839f2269fSPeter Wemm mbstate_t state; 4939f2269fSPeter Wemm size_t length; 5039f2269fSPeter Wemm int n; 5139f2269fSPeter Wemm 5239f2269fSPeter Wemm T((T_CALLED("unget_wch(%d)"), wch)); 5339f2269fSPeter Wemm 5439f2269fSPeter Wemm memset(&state, 0, sizeof(state)); 5539f2269fSPeter Wemm length = wcrtomb(0, wch, &state); 5639f2269fSPeter Wemm 5739f2269fSPeter Wemm if (length != (size_t) (-1) 5839f2269fSPeter Wemm && length != 0) { 5939f2269fSPeter Wemm char *string = malloc(length); 6039f2269fSPeter Wemm 6139f2269fSPeter Wemm memset(&state, 0, sizeof(state)); 6239f2269fSPeter Wemm wcrtomb(string, wch, &state); 6339f2269fSPeter Wemm 6439f2269fSPeter Wemm for (n = (int) (length - 1); n >= 0; --n) { 6539f2269fSPeter Wemm if (ungetch(string[n]) != OK) { 6639f2269fSPeter Wemm result = ERR; 6739f2269fSPeter Wemm break; 6839f2269fSPeter Wemm } 6939f2269fSPeter Wemm } 7039f2269fSPeter Wemm free(string); 7139f2269fSPeter Wemm } else { 7239f2269fSPeter Wemm result = ERR; 7339f2269fSPeter Wemm } 7439f2269fSPeter Wemm 7539f2269fSPeter Wemm returnCode(result); 7639f2269fSPeter Wemm } 77