MPD  0.20.18
TextFile.hxx
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1 /*
2  * Copyright (C) 2008-2014 Max Kellermann <max.kellermann@gmail.com>
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  * - Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  *
11  * - Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the
14  * distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20  * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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28  */
29 
30 #ifndef TEXT_FILE_HXX
31 #define TEXT_FILE_HXX
32 
33 #include <string.h>
34 
35 template<typename B>
36 char *
37 ReadBufferedLine(B &buffer)
38 {
39  auto r = buffer.Read();
40  char *newline = reinterpret_cast<char*>(memchr(r.data, '\n', r.size));
41  if (newline == nullptr)
42  return nullptr;
43 
44  buffer.Consume(newline + 1 - r.data);
45 
46  if (newline > r.data && newline[-1] == '\r')
47  --newline;
48  *newline = 0;
49  return r.data;
50 }
51 
52 #endif
char * ReadBufferedLine(B &buffer)
Definition: TextFile.hxx:37