Bitcoin Core  24.99.0
P2P Digital Currency
stdin.cpp
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1 // Copyright (c) 2018-2022 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <compat/stdin.h>
6 
7 #include <cstdio>
8 
9 #ifdef WIN32
10 #include <windows.h>
11 #include <io.h>
12 #else
13 #include <termios.h>
14 #include <unistd.h>
15 #include <poll.h>
16 #endif
17 
18 // https://stackoverflow.com/questions/1413445/reading-a-password-from-stdcin
19 void SetStdinEcho(bool enable)
20 {
21 #ifdef WIN32
22  HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE);
23  DWORD mode;
24  GetConsoleMode(hStdin, &mode);
25  if (!enable) {
26  mode &= ~ENABLE_ECHO_INPUT;
27  } else {
28  mode |= ENABLE_ECHO_INPUT;
29  }
30  SetConsoleMode(hStdin, mode);
31 #else
32  struct termios tty;
33  tcgetattr(STDIN_FILENO, &tty);
34  if (!enable) {
35  tty.c_lflag &= ~ECHO;
36  } else {
37  tty.c_lflag |= ECHO;
38  }
39  (void)tcsetattr(STDIN_FILENO, TCSANOW, &tty);
40 #endif
41 }
42 
44 {
45 #ifdef WIN32
46  return _isatty(_fileno(stdin));
47 #else
48  return isatty(fileno(stdin));
49 #endif
50 }
51 
52 bool StdinReady()
53 {
54  if (!StdinTerminal()) {
55  return true;
56  }
57 #ifdef WIN32
58  return false;
59 #else
60  struct pollfd fds;
61  fds.fd = STDIN_FILENO;
62  fds.events = POLLIN;
63  return poll(&fds, 1, 0) == 1;
64 #endif
65 }
66 
bool StdinReady()
Definition: stdin.cpp:52
void SetStdinEcho(bool enable)
Definition: stdin.cpp:19
bool StdinTerminal()
Definition: stdin.cpp:43
~NoechoInst()
Definition: stdin.cpp:68
NoechoInst()
Definition: stdin.cpp:67