1 /* Convert unibyte character to wide character. 2 Copyright (C) 2008, 2010-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2008. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 2.1 of the 8 License, or (at your option) any later version. 9 10 This file is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #include <config.h> 19 20 /* Specification. */ 21 #include <wchar.h> 22 23 #include <stdio.h> 24 #include <stdlib.h> 25 26 wint_t 27 btowc (int c) /* */ 28 { 29 if (c != EOF) 30 { 31 char buf[1]; 32 wchar_t wc; 33 34 buf[0] = c; 35 if (mbtowc (&wc, buf, 1) >= 0) 36 return wc; 37 } 38 return WEOF; 39 }