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-rw-r--r--utils/process/helpers.cpp74
1 files changed, 74 insertions, 0 deletions
diff --git a/utils/process/helpers.cpp b/utils/process/helpers.cpp
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+// Copyright 2010 The Kyua Authors.
+// 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;
+ }
+}