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