1 /** 2 * Copyright © 2017 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 "argument.hpp" 17 18 #include <algorithm> 19 #include <cassert> 20 #include <iostream> 21 #include <iterator> 22 23 namespace witherspoon 24 { 25 namespace power 26 { 27 28 ArgumentParser::ArgumentParser(int argc, char** argv) 29 { 30 auto option = 0; 31 while (-1 != (option = getopt_long(argc, argv, optionStr, options, NULL))) 32 { 33 if ((option == '?') || (option == 'h')) 34 { 35 usage(argv); 36 exit(-1); 37 } 38 39 auto i = &options[0]; 40 while ((i->val != option) && (i->val != 0)) 41 { 42 ++i; 43 } 44 45 if (i->val) 46 { 47 arguments[i->name] = (i->has_arg ? optarg : trueString); 48 } 49 } 50 } 51 52 const std::string& ArgumentParser::operator[](const std::string& opt) 53 { 54 auto i = arguments.find(opt); 55 if (i == arguments.end()) 56 { 57 return emptyString; 58 } 59 else 60 { 61 return i->second; 62 } 63 } 64 65 void ArgumentParser::usage(char** argv) 66 { 67 std::cerr << "Usage: " << argv[0] << " [options]\n"; 68 std::cerr << "Options:\n"; 69 std::cerr << " --help Print this menu\n"; 70 std::cerr << " --path=<objpath> Path to location to" 71 " monitor\n"; 72 std::cerr << " --instance=<instance number> Instance number for" 73 " this power supply\n"; 74 std::cerr << " --inventory=<inventory path> Inventory path for" 75 " this power supply\n"; 76 std::cerr << " --num-history-records=<num records> Number of input" 77 " power history records to provide on D-Bus\n"; 78 std::cerr << " --sync-gpio-path=<path> GPIO chip device" 79 " for the GPIO that performs the sync function\n"; 80 std::cerr << " --sync-gpio-num=<path> GPIO number for the" 81 " GPIO that performs the sync function\n"; 82 std::cerr << std::flush; 83 } 84 85 const option ArgumentParser::options[] = { 86 {"path", required_argument, NULL, 'p'}, 87 {"instance", required_argument, NULL, 'n'}, 88 {"inventory", required_argument, NULL, 'i'}, 89 {"num-history-records", required_argument, NULL, 'r'}, 90 {"sync-gpio-path", required_argument, NULL, 'a'}, 91 {"sync-gpio-num", required_argument, NULL, 'u'}, 92 {"help", no_argument, NULL, 'h'}, 93 {0, 0, 0, 0}, 94 }; 95 96 const char* ArgumentParser::optionStr = "p:n:i:r:a:u:h"; 97 98 const std::string ArgumentParser::trueString = "true"; 99 const std::string ArgumentParser::emptyString = ""; 100 101 } // namespace power 102 } // namespace witherspoon 103