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CharUtil.hxx
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1 /*
2 * Copyright (C) 2011-2014 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)
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 CHAR_UTIL_HXX
31 #define CHAR_UTIL_HXX
32
33 constexpr
34 static inline bool
35 IsASCII(const unsigned char ch)
36 {
37 return ch < 0x80;
38 }
39
40 constexpr
41 static inline bool
42 IsASCII(const char ch)
43 {
44 return IsASCII((unsigned char)ch);
45 }
46
47 constexpr
48 static inline bool
49 IsWhitespaceOrNull(const char ch)
50 {
51 return (unsigned char)ch <= 0x20;
52 }
53
54 constexpr
55 static inline bool
56 IsWhitespaceNotNull(const char ch)
57 {
58 return ch > 0 && ch <= 0x20;
59 }
60
67 constexpr
68 static inline bool
69 IsWhitespaceFast(const char ch)
70 {
71 return IsWhitespaceOrNull(ch);
72 }
73
74 constexpr
75 static inline bool
76 IsPrintableASCII(char ch)
77 {
78 return (signed char)ch >= 0x20;
79 }
80
81 constexpr
82 static inline bool
83 IsDigitASCII(char ch)
84 {
85 return ch >= '0' && ch <= '9';
86 }
87
88 constexpr
89 static inline bool
90 IsUpperAlphaASCII(char ch)
91 {
92 return ch >= 'A' && ch <= 'Z';
93 }
94
95 constexpr
96 static inline bool
97 IsLowerAlphaASCII(char ch)
98 {
99 return ch >= 'a' && ch <= 'z';
100 }
101
102 constexpr
103 static inline bool
104 IsAlphaASCII(char ch)
105 {
106 return IsUpperAlphaASCII(ch) || IsLowerAlphaASCII(ch);
107 }
108
109 constexpr
110 static inline bool
111 IsAlphaNumericASCII(char ch)
112 {
113 return IsAlphaASCII(ch) || IsDigitASCII(ch);
114 }
115
120 constexpr
121 static inline char
122 ToUpperASCII(char ch)
123 {
124 return ch >= 'a' && ch <= 'z'
125 ? (ch - ('a' - 'A'))
126 : ch;
127 }
128
133 constexpr
134 static inline char
135 ToLowerASCII(char ch)
136 {
137 return ch >= 'A' && ch <= 'Z'
138 ? (ch + ('a' - 'A'))
139 : ch;
140 }
141
142 #endif
IsLowerAlphaASCII
static constexpr bool IsLowerAlphaASCII(char ch)
Definition: CharUtil.hxx:97
IsAlphaASCII
static constexpr bool IsAlphaASCII(char ch)
Definition: CharUtil.hxx:104
IsDigitASCII
static constexpr bool IsDigitASCII(char ch)
Definition: CharUtil.hxx:83
IsASCII
static constexpr bool IsASCII(const unsigned char ch)
Definition: CharUtil.hxx:35
IsWhitespaceNotNull
static constexpr bool IsWhitespaceNotNull(const char ch)
Definition: CharUtil.hxx:56
IsPrintableASCII
static constexpr bool IsPrintableASCII(char ch)
Definition: CharUtil.hxx:76
ToLowerASCII
static constexpr char ToLowerASCII(char ch)
Convert the specified ASCII character (0x00..0x7f) to lower case.
Definition: CharUtil.hxx:135
IsAlphaNumericASCII
static constexpr bool IsAlphaNumericASCII(char ch)
Definition: CharUtil.hxx:111
IsWhitespaceFast
static constexpr bool IsWhitespaceFast(const char ch)
Is the given character whitespace? This calls the faster one of IsWhitespaceOrNull() or IsWhitespaceN...
Definition: CharUtil.hxx:69
IsUpperAlphaASCII
static constexpr bool IsUpperAlphaASCII(char ch)
Definition: CharUtil.hxx:90
ToUpperASCII
static constexpr char ToUpperASCII(char ch)
Convert the specified ASCII character (0x00..0x7f) to upper case.
Definition: CharUtil.hxx:122
IsWhitespaceOrNull
static constexpr bool IsWhitespaceOrNull(const char ch)
Definition: CharUtil.hxx:49