fdgets.c (1152B)
1 /* -*-comment-start: "//";comment-end:""-*- 2 * GNU Mes --- Maxwell Equations of Software 3 * Copyright © 2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> 4 * 5 * This file is part of GNU Mes. 6 * 7 * GNU Mes is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 3 of the License, or (at 10 * your option) any later version. 11 * 12 * GNU Mes is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with GNU Mes. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #include <mes/lib.h> 22 #include <stdio.h> 23 24 char * 25 fdgets (char *s, int count, int fd) 26 { 27 int c = 0; 28 char *p = s; 29 while (--count > 0 && c != '\n') 30 { 31 c = fdgetc (fd); 32 if (c == EOF) 33 break; 34 *p++ = c; 35 } 36 if (p == s && (c == EOF || count == -1)) 37 return 0; 38 *p = 0; 39 return s; 40 }