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[Windows] Disable console I/O redirection, if it's already redirected to the pipe or file.
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@ -83,15 +83,23 @@ static String format_error_message(DWORD id) {
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return msg;
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}
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void RedirectStream(const char *p_file_name, const char *p_mode, FILE *p_cpp_stream, const DWORD p_std_handle) {
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const HANDLE h_existing = GetStdHandle(p_std_handle);
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if (h_existing != INVALID_HANDLE_VALUE) { // Redirect only if attached console have a valid handle.
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const HANDLE h_cpp = reinterpret_cast<HANDLE>(_get_osfhandle(_fileno(p_cpp_stream)));
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if (h_cpp == INVALID_HANDLE_VALUE) { // Redirect only if it's not already redirected to the pipe or file.
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FILE *fp = p_cpp_stream;
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freopen_s(&fp, p_file_name, p_mode, p_cpp_stream); // Redirect stream.
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setvbuf(p_cpp_stream, nullptr, _IONBF, 0); // Disable stream buffering.
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}
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}
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}
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void RedirectIOToConsole() {
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if (AttachConsole(ATTACH_PARENT_PROCESS)) {
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FILE *fpstdin = stdin;
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FILE *fpstdout = stdout;
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FILE *fpstderr = stderr;
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freopen_s(&fpstdin, "CONIN$", "r", stdin);
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freopen_s(&fpstdout, "CONOUT$", "w", stdout);
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freopen_s(&fpstderr, "CONOUT$", "w", stderr);
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RedirectStream("CONIN$", "r", stdin, STD_INPUT_HANDLE);
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RedirectStream("CONOUT$", "w", stdout, STD_OUTPUT_HANDLE);
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RedirectStream("CONOUT$", "w", stderr, STD_ERROR_HANDLE);
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printf("\n"); // Make sure our output is starting from the new line.
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}
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