1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "flashd_utils.h"
17
18 #include <unistd.h>
19
20 #include "securec.h"
21
22 namespace Flashd {
23 constexpr const char *PREFIX_PARTITION_NODE = "/dev/block/by-name/";
24
GetRealPath(const std::string & path)25 std::string GetRealPath(const std::string &path)
26 {
27 char realPath[PATH_MAX + 1] = {0};
28 auto ret = realpath(path.c_str(), realPath);
29 return (ret == nullptr) ? "" : ret;
30 }
31
GetPartitionRealPath(const std::string & name)32 std::string GetPartitionRealPath(const std::string &name)
33 {
34 return GetRealPath(PREFIX_PARTITION_NODE + name);
35 }
36
GetPathRoot(const std::string & path)37 std::string GetPathRoot(const std::string &path)
38 {
39 auto pos = path.find_first_of('/', 1);
40 return path.substr(0, pos);
41 }
42
GetFileName(const std::string & path)43 std::string GetFileName(const std::string &path)
44 {
45 auto pos = path.find_last_of('/');
46 if (pos == std::string::npos) {
47 pos = path.find_last_of('\\');
48 if (pos == std::string::npos) {
49 return "";
50 }
51 }
52 return path.substr(pos + 1);
53 }
54
Split(const std::string & src,const std::vector<std::string> & filter)55 std::vector<std::string> Split(const std::string &src, const std::vector<std::string> &filter)
56 {
57 std::vector<std::string> result;
58 if (src.empty()) {
59 return result;
60 }
61
62 const auto len = src.size() + 1;
63 auto buffer = std::vector<char>(len, 0);
64 buffer.assign(src.begin(), src.end());
65
66 const char delimit[] = " ";
67 char *nextToken = nullptr;
68 auto token = strtok_s(buffer.data(), delimit, &nextToken);
69 while (token != nullptr) {
70 if (find(filter.cbegin(), filter.cend(), token) == filter.cend()) {
71 result.push_back(token);
72 }
73 token = strtok_s(nullptr, delimit, &nextToken);
74 }
75 return result;
76 }
77
SafeCloseFile(int & fd)78 void SafeCloseFile(int &fd)
79 {
80 if (fd >= 0) {
81 close(fd);
82 fd = -1;
83 }
84 }
85 } // namespace Flashd