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 "argument.hpp"
18 
19 #include <algorithm>
20 #include <cassert>
21 #include <iostream>
22 #include <iterator>
23 
24 namespace phosphor
25 {
26 namespace led
27 {
28 // NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays)
29 ArgumentParser::ArgumentParser(int argc, char* argv[])
30 {
31     int option = 0;
32     while (-1 !=
33            (option = getopt_long(argc, argv, optionstr, &options[0], nullptr)))
34     {
35         switch (option)
36         {
37             case '?':
38             case 'h':
39                 usage(argv);
40                 exit(-1);
41                 break;
42             case 'p':
43                 arguments["path"] = optarg;
44                 break;
45         }
46     }
47 }
48 
49 const std::string& ArgumentParser::operator[](const std::string& opt)
50 {
51     static const std::string emptyString{};
52 
53     auto i = arguments.find(opt);
54     if (i == arguments.end())
55     {
56         return emptyString;
57     }
58 
59     return i->second;
60 }
61 
62 // NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays)
63 void ArgumentParser::usage(char* argv[])
64 {
65     // NOLINTNEXTLINE
66     std::cerr << "Usage: " << argv[0] << " [options]" << std::endl;
67     std::cerr << "Options:" << std::endl;
68     std::cerr << "    --help               Print this menu" << std::endl;
69     std::cerr << "    --path=<path>        absolute path of LED in sysfs; like";
70     std::cerr << " /sys/class/leds/<name>" << std::endl;
71 }
72 } // namespace led
73 } // namespace phosphor
74