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 <iostream> 18 #include <string> 19 #include "argument.hpp" 20 21 static void exitWithError(const char* err, char** argv) 22 { 23 phosphor::gpio::ArgumentParser::usage(argv); 24 std::cerr << "ERROR: " << err << "\n"; 25 exit(EXIT_FAILURE); 26 } 27 28 int main(int argc, char** argv) 29 { 30 // Read arguments. 31 auto options = phosphor::gpio::ArgumentParser(argc, argv); 32 33 // Parse out path argument. 34 auto path = (options)["path"]; 35 if (path == phosphor::gpio::ArgumentParser::emptyString) 36 { 37 exitWithError("path not specified.", argv); 38 } 39 40 // Parse out key number that we are interested in 41 // Its integer mapping to the GPIO key configured by the kernel 42 auto key = (options)["key"]; 43 if (key == phosphor::gpio::ArgumentParser::emptyString) 44 { 45 exitWithError("Key not specified.", argv); 46 } 47 // TODO : Convert key to integer 48 49 // Parse out assertion polarity interested in 50 // Its either 1 or 0 for press / release 51 auto polarity = (options)["polarity"]; 52 if (polarity == phosphor::gpio::ArgumentParser::emptyString) 53 { 54 exitWithError("Polarity not specified.", argv); 55 } 56 // TODO : Convert polarity to integer 57 58 // Parse out target argument. It is fine if the caller does not 59 // pass this if they are not interested in calling into any target 60 // on meeting a condition. 61 auto target = (options)["target"]; 62 63 return 0; 64 } 65