2 * This file is part of DisOrder
3 * Copyright (C) 2013 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program 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 General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file lib/socketio.c
19 * @brief Buffered socket IO
26 #include <sys/types.h>
28 # include <sys/socket.h>
34 void socketio_init(struct socketio *sio, SOCKET sd) {
36 sio->inputptr = sio->inputlimit = sio->input;
41 int socketio_write(struct socketio *sio, const void *buffer, size_t n) {
44 chunk = n > sizeof sio->output ? sizeof sio->output : n;
46 memcpy(sio->output + sio->outputused, buffer, chunk);
47 sio->outputused += chunk;
48 buffer = (char *)buffer + chunk;
51 if(sio->outputused == sizeof sio->output)
52 if(socketio_flush(sio))
58 static int socketio_fill(struct socketio *sio) {
59 int n = recv(sio->sd, sio->input, sizeof sio->input, 0);
61 sio->error = n < 0 ? socket_error() : -1;
64 sio->inputptr = sio->input;
65 sio->inputlimit = sio->input + n;
69 int socketio_getc(struct socketio *sio) {
70 if(sio->inputptr >= sio->inputlimit) {
71 if(socketio_fill(sio))
74 return *sio->inputptr++;
77 int socketio_flush(struct socketio *sio) {
79 while(written < sio->outputused) {
80 int n = send(sio->sd, sio->output + written, sio->outputused - written, 0);
82 sio->error = socket_error();
91 void socketio_close(struct socketio *sio) {