external/bsd/kyua-cli/dist/utils/process/helpers.cpp

   1 // Copyright 2010 Google Inc.
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   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
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   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
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  20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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  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
  35 static int
  36 print_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
  45 static int
  46 return_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
  58 int
  59 main(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 }