fwrite.c (1437B)
1 /* -*-comment-start: "//";comment-end:""-*- 2 * GNU Mes --- Maxwell Equations of Software 3 * Copyright © 2017,2018,2019 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 #include <unistd.h> 24 25 size_t 26 fwrite (void const *data, size_t size, size_t count, FILE * stream) 27 { 28 if (__mes_debug () > 1) 29 { 30 eputs ("fwrite "); 31 eputs (itoa ((int) (long) stream)); 32 eputs (" "); 33 eputs (itoa (size)); 34 eputs ("\n"); 35 } 36 37 if (!size || !count) 38 return 0; 39 int filedes = (long) stream; 40 int bytes = write (filedes, data, size * count); 41 42 if (__mes_debug () > 2) 43 { 44 eputs (" => "); 45 eputs (itoa (bytes)); 46 eputs ("\n"); 47 } 48 49 if (bytes > 0) 50 return bytes / size; 51 return 0; 52 }