1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "perfetto/base/string_utils.h"
18
19 #include <algorithm>
20
21 #include "perfetto/base/logging.h"
22
23 namespace perfetto {
24 namespace base {
25
StartsWith(const std::string & str,const std::string & prefix)26 bool StartsWith(const std::string& str, const std::string& prefix) {
27 return str.compare(0, prefix.length(), prefix) == 0;
28 }
29
EndsWith(const std::string & str,const std::string & suffix)30 bool EndsWith(const std::string& str, const std::string& suffix) {
31 if (suffix.size() > str.size())
32 return false;
33 return str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0;
34 }
35
Contains(const std::string & haystack,const std::string & needle)36 bool Contains(const std::string& haystack, const std::string& needle) {
37 return haystack.find(needle) != std::string::npos;
38 }
39
Join(const std::vector<std::string> & parts,const std::string & delim)40 std::string Join(const std::vector<std::string>& parts,
41 const std::string& delim) {
42 std::string acc;
43 for (size_t i = 0; i < parts.size(); ++i) {
44 acc += parts[i];
45 if (i + 1 != parts.size()) {
46 acc += delim;
47 }
48 }
49 return acc;
50 }
51
SplitString(const std::string & text,const std::string & delimiter)52 std::vector<std::string> SplitString(const std::string& text,
53 const std::string& delimiter) {
54 PERFETTO_CHECK(!delimiter.empty());
55
56 std::vector<std::string> output;
57 size_t start = 0;
58 size_t next;
59 for (;;) {
60 next = std::min(text.find(delimiter, start), text.size());
61 output.emplace_back(&text[start], next - start);
62 start = next + delimiter.size();
63 if (start >= text.size())
64 break;
65 }
66 return output;
67 }
68
69 } // namespace base
70 } // namespace perfetto
71