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 <stdio.h>
18 #include <iostream>
19 #include <string>
20 #include <vector>
21 
22 #include <android-base/strings.h>
23 
24 static std::string pathToFilename(const std::string& path, bool noext = false) {
25     std::vector<std::string> spath = android::base::Split(path, "/");
26     std::string ret = spath.back();
27 
28     if (noext) {
29         size_t lastindex = ret.find_last_of('.');
30         return ret.substr(0, lastindex);
31     }
32     return ret;
33 }
34 
35 static int getMachineKvers(void) {
36     struct utsname un;
37     char* unameOut;
38     int nums[3];  // maj, min, sub
39 
40     if (uname(&un)) return -1;
41     unameOut = un.release;
42 
43     std::string s = unameOut;
44     std::string token;
45     size_t pos = 0;
46     int cur_num = 0;
47 
48     while ((pos = s.find('.')) != std::string::npos && cur_num < 3) {
49         token = s.substr(0, pos);
50         s.erase(0, pos + 1);
51 
52         if ((pos = token.find('-')) != std::string::npos) token = token.substr(0, pos);
53 
54         nums[cur_num++] = stoi(token);
55     }
56 
57     if ((pos = s.find('-')) != std::string::npos)
58         token = s.substr(0, pos);
59     else
60         token = s;
61 
62     if (token.length() > 0 && cur_num < 3) {
63         nums[cur_num++] = stoi(token);
64     }
65 
66     if (cur_num != 3)
67         return -1;
68     else
69         return (65536 * nums[0] + 256 * nums[1] + nums[2]);
70 }
71 
72 static void deslash(std::string& s) {
73     std::replace(s.begin(), s.end(), '/', '_');
74 }
75