1 //===-- main.cpp ------------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include <cstdlib>
10 #include <string>
11 #include <fstream>
12 #include <iostream>
13 
14 int numberfn()
15 {
16     return 0x5a;
17 }
18 
19 int
20 main(int argc, char const *argv[])
21 {
22     // The program writes its output to the following file:
23     //
24     //     o "output1.txt" for test_pass_host_env_vars() test case
25     //     o "output2.txt" for test_run_args_and_env_vars_with_dsym() test case
26     //     o "output2.txt" for test_run_args_and_env_vars_with_dwarf() test case
27     std::ofstream outfile;
28     if (argc == 1)
29         outfile.open("output1.txt");
30     else
31         outfile.open("output2.txt");
32 
33     for (unsigned i = 0; i < argc; ++i) {
34         std::string theArg(argv[i]);
35         if (i == 1 && "A" == theArg)
36             outfile << "argv[1] matches\n";
37 
38         if (i == 2 && "B" == theArg)
39             outfile << "argv[2] matches\n";
40 
41         if (i == 3 && "C" == theArg)
42             outfile << "argv[3] matches\n";
43     }
44 
45     // For passing environment vars from the debugger to the launched process.
46     if (::getenv("MY_ENV_VAR")) {
47         std::string MY_ENV_VAR(getenv("MY_ENV_VAR"));
48         if ("YES" == MY_ENV_VAR) {
49             outfile << "Environment variable 'MY_ENV_VAR' successfully passed.\n";
50         }
51     }
52 
53 
54     // For passing host environment vars to the launched process.
55     if (::getenv("MY_HOST_ENV_VAR1")) {
56         std::string MY_HOST_ENV_VAR1(getenv("MY_HOST_ENV_VAR1"));
57         if ("VAR1" == MY_HOST_ENV_VAR1) {
58             outfile << "The host environment variable 'MY_HOST_ENV_VAR1' successfully passed.\n";
59         }
60     }
61 
62     if (::getenv("MY_HOST_ENV_VAR2")) {
63         std::string MY_HOST_ENV_VAR2(getenv("MY_HOST_ENV_VAR2"));
64         if ("VAR2" == MY_HOST_ENV_VAR2) {
65             outfile << "The host environment variable 'MY_HOST_ENV_VAR2' successfully passed.\n";
66         }
67     }
68 
69     std::cerr << "This message should go to standard error.\n";
70     std::cout << "This message should go to standard out.\n";
71 
72     outfile.close();
73     return numberfn();
74 }
75