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

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// Copyright 2010 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#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;
}
}