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81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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Copyright (c) 2012, Broadcom Europe Ltd
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the copyright holder nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <termios.h>
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#include "nb_io.h"
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void nb_set_nonblocking_input(int enable)
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{
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struct termios ttystate;
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//get the terminal state
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tcgetattr(STDIN_FILENO, &ttystate);
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if (enable)
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{
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//turn off canonical mode
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ttystate.c_lflag &= ~ICANON;
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//minimum of number input read.
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ttystate.c_cc[VMIN] = 1;
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}
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else
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{
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//turn on canonical mode
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ttystate.c_lflag |= ICANON;
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}
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//set the terminal attributes.
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tcsetattr(STDIN_FILENO, TCSANOW, &ttystate);
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}
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int nb_char_available(void)
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{
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struct timeval tv;
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fd_set fds;
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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FD_ZERO(&fds);
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FD_SET(STDIN_FILENO, &fds);
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select(STDIN_FILENO+1, &fds, NULL, NULL, &tv);
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return (FD_ISSET(0, &fds));
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}
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char nb_get_char(void)
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{
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return getchar();
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}
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void nb_put_char(char ch)
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{
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putchar(ch);
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}
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