xref: /openbmc/phosphor-hwmon/sensorset.cpp (revision 6bb97a97)
1 /**
2  * Copyright © 2016 IBM Corporation
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 #include <regex>
17 #include <iostream>
18 #include "sensorset.hpp"
19 #include "directory.hpp"
20 
21 // TODO: Issue#2 - STL regex generates really bloated code.  Use POSIX regex
22 //       interfaces instead.
23 static const std::regex sensors_regex =
24     std::regex("^(fan|in|temp)([0-9]+)_([a-z]*)", std::regex::extended);
25 static const auto sensor_regex_match_count = 4;
26 
27 SensorSet::SensorSet(const std::string& path)
28 {
29     Directory d(path);
30     std::string file;
31 
32     while (d.next(file))
33     {
34         std::smatch match;
35         std::regex_search(file, match, sensors_regex);
36 
37         if (match.size() != sensor_regex_match_count)
38         {
39             continue;
40         }
41 
42         container[make_pair(match[1], match[2])].emplace(match[3]);
43     }
44 }
45