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/**
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* Author......: Jens Steube <jens.steube@gmail.com>
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* License.....: MIT
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*/
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#include "common.h"
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#include "terminal.h"
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#if defined (_WIN)
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void SetConsoleWindowSize (const int x)
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{
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HANDLE h = GetStdHandle (STD_OUTPUT_HANDLE);
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if (h == INVALID_HANDLE_VALUE) return;
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CONSOLE_SCREEN_BUFFER_INFO bufferInfo;
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if (!GetConsoleScreenBufferInfo (h, &bufferInfo)) return;
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SMALL_RECT *sr = &bufferInfo.srWindow;
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sr->Right = MAX (sr->Right, x - 1);
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COORD co;
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co.X = sr->Right + 1;
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co.Y = 9999;
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if (!SetConsoleScreenBufferSize (h, co)) return;
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if (!SetConsoleWindowInfo (h, TRUE, sr)) return;
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}
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#endif
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#if defined (__linux__)
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static struct termios savemodes;
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static int havemodes = 0;
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int tty_break()
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{
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struct termios modmodes;
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if (tcgetattr (fileno (stdin), &savemodes) < 0) return -1;
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havemodes = 1;
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modmodes = savemodes;
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modmodes.c_lflag &= ~ICANON;
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modmodes.c_cc[VMIN] = 1;
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modmodes.c_cc[VTIME] = 0;
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return tcsetattr (fileno (stdin), TCSANOW, &modmodes);
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}
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int tty_getchar()
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{
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fd_set rfds;
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FD_ZERO (&rfds);
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FD_SET (fileno (stdin), &rfds);
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struct timeval tv;
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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int retval = select (1, &rfds, NULL, NULL, &tv);
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if (retval == 0) return 0;
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if (retval == -1) return -1;
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return getchar();
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}
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int tty_fix()
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{
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if (!havemodes) return 0;
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return tcsetattr (fileno (stdin), TCSADRAIN, &savemodes);
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}
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#endif
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#if defined(__APPLE__) || defined(__FreeBSD__)
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static struct termios savemodes;
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static int havemodes = 0;
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int tty_break()
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{
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struct termios modmodes;
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if (ioctl (fileno (stdin), TIOCGETA, &savemodes) < 0) return -1;
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havemodes = 1;
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modmodes = savemodes;
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modmodes.c_lflag &= ~ICANON;
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modmodes.c_cc[VMIN] = 1;
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modmodes.c_cc[VTIME] = 0;
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return ioctl (fileno (stdin), TIOCSETAW, &modmodes);
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}
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int tty_getchar()
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{
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fd_set rfds;
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FD_ZERO (&rfds);
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FD_SET (fileno (stdin), &rfds);
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struct timeval tv;
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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int retval = select (1, &rfds, NULL, NULL, &tv);
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if (retval == 0) return 0;
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if (retval == -1) return -1;
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return getchar();
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}
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int tty_fix()
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{
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if (!havemodes) return 0;
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return ioctl (fileno (stdin), TIOCSETAW, &savemodes);
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}
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#endif
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#if defined (_WIN)
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static DWORD saveMode = 0;
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int tty_break()
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{
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HANDLE stdinHandle = GetStdHandle (STD_INPUT_HANDLE);
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GetConsoleMode (stdinHandle, &saveMode);
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SetConsoleMode (stdinHandle, ENABLE_PROCESSED_INPUT);
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return 0;
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}
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int tty_getchar()
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{
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HANDLE stdinHandle = GetStdHandle (STD_INPUT_HANDLE);
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DWORD rc = WaitForSingleObject (stdinHandle, 1000);
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if (rc == WAIT_TIMEOUT) return 0;
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if (rc == WAIT_ABANDONED) return -1;
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if (rc == WAIT_FAILED) return -1;
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// The whole ReadConsoleInput () part is a workaround.
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// For some unknown reason, maybe a mingw bug, a random signal
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// is sent to stdin which unblocks WaitForSingleObject () and sets rc 0.
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// Then it wants to read with getche () a keyboard input
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// which has never been made.
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INPUT_RECORD buf[100];
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DWORD num = 0;
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memset (buf, 0, sizeof (buf));
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ReadConsoleInput (stdinHandle, buf, 100, &num);
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FlushConsoleInputBuffer (stdinHandle);
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for (DWORD i = 0; i < num; i++)
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{
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if (buf[i].EventType != KEY_EVENT) continue;
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KEY_EVENT_RECORD KeyEvent = buf[i].Event.KeyEvent;
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if (KeyEvent.bKeyDown != TRUE) continue;
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return KeyEvent.uChar.AsciiChar;
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}
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return 0;
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}
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int tty_fix()
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{
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HANDLE stdinHandle = GetStdHandle (STD_INPUT_HANDLE);
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SetConsoleMode (stdinHandle, saveMode);
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return 0;
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}
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#endif
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