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
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "android-base/strings.h"
#include <stdlib.h>
#include <string.h>
#include <string>
#include <vector>
namespace android {
namespace base {
#define CHECK_NE(a, b) \
if ((a) == (b)) abort();
std::vector<std::string> Split(const std::string& s,
const std::string& delimiters) {
CHECK_NE(delimiters.size(), 0U);
std::vector<std::string> result;
size_t base = 0;
size_t found;
do {
found = s.find_first_of(delimiters, base);
result.push_back(s.substr(base, found - base));
base = found + 1;
} while (found != s.npos);
return result;
}
std::string Trim(const std::string& s) {
std::string result;
if (s.size() == 0) {
return result;
}
size_t start_index = 0;
size_t end_index = s.size() - 1;
// Skip initial whitespace.
while (start_index < s.size()) {
if (!isspace(s[start_index])) {
break;
}
start_index++;
}
// Skip terminating whitespace.
while (end_index >= start_index) {
if (!isspace(s[end_index])) {
break;
}
end_index--;
}
// All spaces, no beef.
if (end_index < start_index) {
return "";
}
// Start_index is the first non-space, end_index is the last one.
return s.substr(start_index, end_index - start_index + 1);
}
// These cases are probably the norm, so we mark them extern in the header to
// aid compile time and binary size.
template std::string Join(const std::vector<std::string>&, char);
template std::string Join(const std::vector<const char*>&, char);
template std::string Join(const std::vector<std::string>&, const std::string&);
template std::string Join(const std::vector<const char*>&, const std::string&);
bool StartsWith(const std::string& s, const char* prefix) {
return s.compare(0, strlen(prefix), prefix) == 0;
}
bool EndsWith(const std::string& s, const char* suffix) {
size_t suffix_length = strlen(suffix);
size_t string_length = s.size();
if (suffix_length > string_length) {
return false;
}
size_t offset = string_length - suffix_length;
return s.compare(offset, suffix_length, suffix) == 0;
}
} // namespace base
} // namespace android
|
