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1/*************************************************************************
2 *
3 * HTCd - Copyright (C) 1998-2006 Henrik Rydberg
4 *
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 2 of the License, or
8 * (at your option) any later version.
9 *
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.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#ifndef MREADH
21#define MREADH
22
23// These functions work with nonblocking pipes
24// as well as normal devices, and does not produce
25// any signals on pipe errors
26
27#include <mt/mstring.h>
28#include <unistd.h>
29#include <fcntl.h>
30
31class mread {
32public:
33 mread();
34 mread(int f);
35
36 void setfd(int f) { clear(); fd=f; }
37 int getfd() const { return fd; }
38
39 void setflag(int f) { fcntl(fd,F_SETFL,f); }
40 int getflag() const { return fcntl(fd,F_GETFL,0); }
41
42 // Basic, pipe-safe, normally non-blocking, reads
43 void clear();
44 int poll();
45 int read(char* s,int n);
46 void putback(const sref& s);
47
48 // Buffered reads
49 int readx(char* s,int n); // may timeout and return less than wanted
50 int readln(char* s,int n);
51 int readpara(char* s,int n);
52
53private:
54 int fd;
55 mstring buf;
56};
57
58// All functions return number of bytes written, or -1 on error.
59// Note that although ln and para continues to read until
60// it finds a newline or a paragraph, it may read more than that.
61// Use clear() to restore reading state
62
63#endif