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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* Copyright (C) 2013-2017 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef STRING_VIEW_HXX
#define STRING_VIEW_HXX
#include "ConstBuffer.hxx"
#include "StringAPI.hxx"
template<typename T>
struct BasicStringView : ConstBuffer<T> {
typedef typename ConstBuffer<T>::size_type size_type;
typedef typename ConstBuffer<T>::value_type value_type;
typedef typename ConstBuffer<T>::pointer_type pointer_type;
using ConstBuffer<T>::data;
using ConstBuffer<T>::size;
BasicStringView() = default;
explicit constexpr BasicStringView(ConstBuffer<T> src)
:ConstBuffer<T>(src) {}
explicit constexpr BasicStringView(ConstBuffer<void> src)
:ConstBuffer<T>(ConstBuffer<T>::FromVoid(src)) {}
constexpr BasicStringView(pointer_type _data, size_type _size) noexcept
:ConstBuffer<T>(_data, _size) {}
constexpr BasicStringView(pointer_type _begin,
pointer_type _end) noexcept
:ConstBuffer<T>(_begin, _end - _begin) {}
BasicStringView(pointer_type _data) noexcept
:ConstBuffer<T>(_data,
_data != nullptr ? StringLength(_data) : 0) {}
constexpr BasicStringView(std::nullptr_t n) noexcept
:ConstBuffer<T>(n) {}
using ConstBuffer<T>::empty;
using ConstBuffer<T>::front;
using ConstBuffer<T>::back;
using ConstBuffer<T>::pop_front;
using ConstBuffer<T>::pop_back;
using ConstBuffer<T>::skip_front;
gcc_pure
pointer_type Find(value_type ch) const noexcept {
return StringFind(data, ch, this->size);
}
gcc_pure
bool StartsWith(BasicStringView<T> needle) const noexcept {
return this->size >= needle.size &&
StringIsEqual(data, needle.data, needle.size);
}
gcc_pure
bool EndsWith(BasicStringView<T> needle) const noexcept {
return this->size >= needle.size &&
StringIsEqual(data + this->size - needle.size,
needle.data, needle.size);
}
gcc_pure
bool Equals(BasicStringView<T> other) const noexcept {
return this->size == other.size &&
StringIsEqual(data, other.data, this->size);
}
gcc_pure
bool EqualsIgnoreCase(BasicStringView<T> other) const noexcept {
return this->size == other.size &&
StringIsEqualIgnoreCase(data, other.data, this->size);
}
/**
* Skip all whitespace at the beginning.
*/
void StripLeft() noexcept;
/**
* Skip all whitespace at the end.
*/
void StripRight() noexcept;
void Strip() noexcept {
StripLeft();
StripRight();
}
bool SkipPrefix(BasicStringView<T> needle) noexcept {
bool match = StartsWith(needle);
if (match)
skip_front(needle.size);
return match;
}
bool RemoveSuffix(BasicStringView<T> needle) noexcept {
bool match = EndsWith(needle);
if (match)
size -= needle.size;
return match;
}
};
struct StringView : BasicStringView<char> {
using BasicStringView::BasicStringView;
StringView() = default;
constexpr StringView(BasicStringView<value_type> src) noexcept
:BasicStringView(src) {}
};
#endif
|
