MPD  0.20.6
ASCII.hxx
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2013 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)
26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27  * OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #ifndef ASCII_HXX
31 #define ASCII_HXX
32 
33 #include "Compiler.h"
34 
35 #include <assert.h>
36 #include <strings.h>
37 
43 static inline bool
44 StringEqualsCaseASCII(const char *a, const char *b)
45 {
46 #if !CLANG_CHECK_VERSION(3,6)
47  /* disabled on clang due to -Wtautological-pointer-compare */
48  assert(a != nullptr);
49  assert(b != nullptr);
50 #endif
51 
52  /* note: strcasecmp() depends on the locale, but for ASCII-only
53  strings, it's safe to use */
54  return strcasecmp(a, b) == 0;
55 }
56 
58 static inline bool
59 StringEqualsCaseASCII(const char *a, const char *b, size_t n)
60 {
61 #if !CLANG_CHECK_VERSION(3,6)
62  /* disabled on clang due to -Wtautological-pointer-compare */
63  assert(a != nullptr);
64  assert(b != nullptr);
65 #endif
66 
67  /* note: strcasecmp() depends on the locale, but for ASCII-only
68  strings, it's safe to use */
69  return strncasecmp(a, b, n) == 0;
70 }
71 
72 #endif
#define gcc_nonnull_all
Definition: Compiler.h:122
gcc_pure static gcc_nonnull_all bool StringEqualsCaseASCII(const char *a, const char *b)
Determine whether two strings are equal, ignoring case for ASCII letters.
Definition: ASCII.hxx:44
#define gcc_pure
Definition: Compiler.h:116