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 17 #include <cstdlib> 18 #include <fstream> 19 20 #include "env.hpp" 21 #include "hwmon.hpp" 22 23 namespace env { 24 25 std::string getEnv(const char* key) 26 { 27 auto value = std::getenv(key); 28 return (value) ? std::string(value) : std::string(); 29 } 30 31 std::string getEnv( 32 const char* prefix, const SensorSet::key_type& sensor) 33 { 34 std::string key; 35 36 key.assign(prefix); 37 key.append(1, '_'); 38 key.append(sensor.first); 39 key.append(sensor.second); 40 41 return getEnv(key.c_str()); 42 } 43 44 std::string getEnv( 45 const char* prefix, 46 const std::string& type, 47 const std::string& id) 48 { 49 SensorSet::key_type sensor{type, id}; 50 return getEnv(prefix, sensor); 51 } 52 53 std::string getIndirectID( 54 std::string path, 55 const SensorSet::key_type& sensor) 56 { 57 std::string content; 58 59 path.append(sensor.first); 60 path.append(sensor.second); 61 path.append(1, '_'); 62 path.append(hwmon::entry::label); 63 64 std::ifstream handle(path.c_str()); 65 if (!handle.fail()) 66 { 67 content.assign( 68 (std::istreambuf_iterator<char>(handle)), 69 (std::istreambuf_iterator<char>())); 70 71 if (!content.empty()) 72 { 73 //remove the newline 74 content.pop_back(); 75 } 76 } 77 78 return content; 79 } 80 81 } // namespace env 82 83 // vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4 84