csize.c

UNIX编程高级环境（第二版）的终端IO部分的程序源码

#include    <termios.h>
#include    "ourhdr.h"

int
main(void)
{
    struct termios    term;
    int                size;

    if (tcgetattr(STDIN_FILENO, &term) < 0)
        err_sys("tcgetattr error");

    size = term.c_cflag & CSIZE;
    if      (size == CS5)    printf("5 bits/byte\n");
    else if (size == CS6)    printf("6 bits/byte\n");
    else if (size == CS7)    printf("7 bits/byte\n");
    else if (size == CS8)    printf("8 bits/byte\n");
    else                    printf("unknown bits/byte\n");

    term.c_cflag &= ~CSIZE;        /* zero out the bits */
    term.c_cflag |= CS8;        /* set 8 bits/byte */

    if (tcsetattr(STDIN_FILENO, TCSANOW, &term) < 0)
        err_sys("tcsetattr error");

    exit(0);
}