| // Copyright 2022 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| // An extremely simple program that simply reads data from stdin and echoes it to stdout, stderr, or |
| // both, depending on its command line arguments. |
| int main(int argc, char** argv) { |
| bool echo_out = false; |
| bool echo_err = false; |
| for (int i = 1; i < argc; ++i) { |
| echo_out |= strcmp(argv[i], "--stdout") == 0; |
| echo_err |= strcmp(argv[i], "--stderr") == 0; |
| } |
| int c; |
| while ((c = getc(stdin)) != EOF) { |
| if (echo_out) { |
| putc(c, stdout); |
| } |
| if (echo_err) { |
| putc(c, stderr); |
| } |
| } |
| return 0; |
| } |