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Vishwanatha Subbanna835571e2016-11-30 11:29:30 +05301/**
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 <iterator>
19#include <algorithm>
20#include <cassert>
21#include "argument.hpp"
22
23namespace phosphor
24{
25namespace led
26{
27
28const std::string ArgumentParser::true_string = "true";
29const std::string ArgumentParser::empty_string = "";
30
Vishwanatha Subbanna75b55102016-11-30 14:20:53 +053031const char* ArgumentParser::optionstr = "p:?h";
Vishwanatha Subbanna835571e2016-11-30 11:29:30 +053032const option ArgumentParser::options[] =
33{
Vishwanatha Subbanna835571e2016-11-30 11:29:30 +053034 { "path", required_argument, nullptr, 'p' },
35 { "help", no_argument, nullptr, 'h' },
36 { 0, 0, 0, 0},
37};
38
39ArgumentParser::ArgumentParser(int argc, char** argv)
40{
41 int option = 0;
42 while(-1 != (option = getopt_long(argc, argv, optionstr, options, nullptr)))
43 {
44 if ((option == '?') || (option == 'h'))
45 {
46 usage(argv);
47 exit(-1);
48 }
49
50 auto i = &options[0];
51 while ((i->val != option) && (i->val != 0)) ++i;
52
53 if (i->val)
54 arguments[i->name] = (i->has_arg ? optarg : true_string);
55 }
56}
57
58const std::string& ArgumentParser::operator[](const std::string& opt)
59{
60 auto i = arguments.find(opt);
61 if (i == arguments.end())
62 {
63 return empty_string;
64 }
65 else
66 {
67 return i->second;
68 }
69}
70
71void ArgumentParser::usage(char** argv)
72{
73 std::cerr << "Usage: " << argv[0] << " [options]" << std::endl;
74 std::cerr << "Options:" << std::endl;
75 std::cerr << " --help Print this menu" << std::endl;
Vishwanatha Subbanna61675c32016-11-30 15:52:15 +053076 std::cerr << " --path=<path> absolute path of LED in sysfs; like";
77 std::cerr << " /sys/class/leds/<name>"
Vishwanatha Subbanna835571e2016-11-30 11:29:30 +053078 << std::endl;
79}
80} // namespace led
81} // namespace phosphor