1/* Copyright (c) 2014, Google Inc.
2 *
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
6 *
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
14
15#include <string>
16#include <vector>
17#include <map>
18
19#include <string.h>
20
21#include "internal.h"
22
23
24bool ParseKeyValueArguments(std::map<std::string, std::string> *out_args,
25                            const std::vector<std::string> &args,
26                            const struct argument *templates) {
27  out_args->clear();
28
29  for (size_t i = 0; i < args.size(); i++) {
30    const std::string &arg = args[i];
31    const struct argument *templ = nullptr;
32    for (size_t j = 0; templates[j].name[0] != 0; j++) {
33      if (strcmp(arg.c_str(), templates[j].name) == 0) {
34        templ = &templates[j];
35        break;
36      }
37    }
38
39    if (templ == nullptr) {
40      fprintf(stderr, "Unknown argument: %s\n", arg.c_str());
41      return false;
42    }
43
44    if (i + 1 >= args.size()) {
45      fprintf(stderr, "Missing argument for option: %s\n", arg.c_str());
46      return false;
47    }
48
49    if (out_args->find(arg) != out_args->end()) {
50      fprintf(stderr, "Duplicate value given for: %s\n", arg.c_str());
51      return false;
52    }
53
54    (*out_args)[arg] = args[++i];
55  }
56
57  for (size_t j = 0; templates[j].name[0] != 0; j++) {
58    const struct argument *templ = &templates[j];
59    if (templ->required && out_args->find(templ->name) == out_args->end()) {
60      fprintf(stderr, "Missing value for required argument: %s\n", templ->name);
61      return false;
62    }
63  }
64
65  return true;
66}
67
68void PrintUsage(const struct argument *templates) {
69  for (size_t i = 0; templates[i].name[0] != 0; i++) {
70    const struct argument *templ = &templates[i];
71    fprintf(stderr, "%s\t%s\n", templ->name, templ->description);
72  }
73}
74