1 /*
2  * Copyright 2022 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 <sys/stat.h>
20 
21 #include <fstream>
22 #include <string>
23 
24 namespace netsim {
25 namespace filesystem {
26 
27 #ifdef _WIN32
28 static const std::string slash = "\\";
29 #else
30 static const std::string slash = "/";
31 #endif
32 
33 /**
34  * Return if a path exists.
35  */
exists(const std::string & name)36 inline bool exists(const std::string &name) {
37   struct stat stat_buffer;
38   return stat(name.c_str(), &stat_buffer) == 0;
39 }
40 
41 /**
42  * Return if a file exists.
43  */
is_regular_file(const std::string & name)44 inline bool is_regular_file(const std::string &name) {
45   // NOTE: Use fstream instead because 'S_ISREG'is undeclared identifier in
46   // windows.
47   std::ifstream f(name.c_str());
48   return f.good();
49 }
50 
51 }  // namespace filesystem
52 }  // namespace netsim
53