blob: 70e91129e38541a8a16971a17620998b7a0ada3f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* Copyright 2003-2017 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_PEEK_READER_HXX
#define MPD_PEEK_READER_HXX
#include "check.h"
#include "Reader.hxx"
#include "util/Compiler.h"
#include <stdint.h>
/**
* A filter that allows the caller to peek the first few bytes without
* consuming them. The first call must be Peek(), and the following
* Read() will deliver the same bytes again.
*/
class PeekReader final : public Reader {
Reader &next;
size_t buffer_size = 0, buffer_position = 0;
uint8_t buffer[64];
public:
explicit PeekReader(Reader &_next)
:next(_next) {}
const void *Peek(size_t size);
/* virtual methods from class Reader */
virtual size_t Read(void *data, size_t size) override;
};
#endif
|
