1// Copyright 2010 The Kyua Authors.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8// * Redistributions of source code must retain the above copyright
9//   notice, this list of conditions and the following disclaimer.
10// * Redistributions in binary form must reproduce the above copyright
11//   notice, this list of conditions and the following disclaimer in the
12//   documentation and/or other materials provided with the distribution.
13// * Neither the name of Google Inc. nor the names of its contributors
14//   may be used to endorse or promote products derived from this software
15//   without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29#include <cstdlib>
30#include <cstring>
31#include <iostream>
32#include <sstream>
33
34
35static int
36print_args(int argc, char* argv[])
37{
38    for (int i = 0; i < argc; i++)
39        std::cout << "argv[" << i << "] = " << argv[i] << "\n";
40    std::cout << "argv[" << argc << "] = NULL";
41    return EXIT_SUCCESS;
42}
43
44
45static int
46return_code(int argc, char* argv[])
47{
48    if (argc != 3)
49        std::abort();
50
51    std::istringstream iss(argv[2]);
52    int code;
53    iss >> code;
54    return code;
55}
56
57
58int
59main(int argc, char* argv[])
60{
61    if (argc < 2) {
62        std::cerr << "Must provide a helper name\n";
63        std::exit(EXIT_FAILURE);
64    }
65
66    if (std::strcmp(argv[1], "print-args") == 0) {
67        return print_args(argc, argv);
68    } else if (std::strcmp(argv[1], "return-code") == 0) {
69        return return_code(argc, argv);
70    } else {
71        std::cerr << "Unknown helper\n";
72        return EXIT_FAILURE;
73    }
74}
75