1 /*
2 * Copyright (C) 2016 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 #pragma once
18
19 #include <errno.h>
20 #include <libgen.h>
21 #include <sys/stat.h>
22 #include <unistd.h>
23
24 #include <string>
25 #include <unordered_set>
26 #include <vector>
27
28 #include <llvm/ADT/StringRef.h>
29
30 std::string getWorkingDir();
31 std::vector<std::string> collectHeaders(const std::string& directory,
32 const std::unordered_set<std::string>& ignored_directories);
33
dirname(const std::string & path)34 static inline std::string dirname(const std::string& path) {
35 std::unique_ptr<char, decltype(&free)> path_copy(strdup(path.c_str()), free);
36 return dirname(path_copy.get());
37 }
38
is_directory(const std::string & path)39 static inline bool is_directory(const std::string& path) {
40 struct stat st;
41 if (stat(path.c_str(), &st) == 0 && S_ISDIR(st.st_mode)) {
42 return true;
43 }
44 return false;
45 }
46
mkdirs(const std::string & path)47 static inline bool mkdirs(const std::string& path) {
48 if (is_directory(path)) {
49 return true;
50 }
51
52 std::string parent = dirname(path);
53 if (parent == path) {
54 return false;
55 }
56
57 if (!mkdirs(parent)) {
58 return false;
59 }
60
61 if (mkdir(path.c_str(), 0700) != 0) {
62 if (errno != EEXIST) {
63 return false;
64 }
65 return is_directory(path);
66 }
67
68 return true;
69 }
70
to_string(const char * c)71 static inline std::string to_string(const char* c) {
72 return c;
73 }
74
to_string(const std::string & str)75 static inline const std::string& to_string(const std::string& str) {
76 return str;
77 }
78
79 template <typename Collection>
80 static inline std::string Join(Collection c, const std::string& delimiter = ", ") {
81 std::string result;
82 for (const auto& item : c) {
83 using namespace std;
84 result.append(to_string(item));
85 result.append(delimiter);
86 }
87 if (!result.empty()) {
88 result.resize(result.length() - delimiter.length());
89 }
90 return result;
91 }
92
93 llvm::StringRef StripPrefix(llvm::StringRef string, llvm::StringRef prefix);
94