utils/process/helpers.cpp

// Copyright 2010 Google Inc.
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#include <cstdlib>
#include <cstring>
#include <iostream>
#include <sstream>


static int
print_args(int argc, char* argv[])
{
    for (int i = 0; i < argc; i++)
        std::cout << "argv[" << i << "] = " << argv[i] << "\n";
    std::cout << "argv[" << argc << "] = NULL";
    return EXIT_SUCCESS;
}


static int
return_code(int argc, char* argv[])
{
    if (argc != 3)
        std::abort();

    std::istringstream iss(argv[2]);
    int code;
    iss >> code;
    return code;
}


int
main(int argc, char* argv[])
{
    if (argc < 2) {
        std::cerr << "Must provide a helper name\n";
        std::exit(EXIT_FAILURE);
    }

    if (std::strcmp(argv[1], "print-args") == 0) {
        return print_args(argc, argv);
    } else if (std::strcmp(argv[1], "return-code") == 0) {
        return return_code(argc, argv);
    } else {
        std::cerr << "Unknown helper\n";
        return EXIT_FAILURE;
    }
}