Ncurses和Linux管道 [英] Ncurses and Linux pipeline

问题描述

我想用ncurses编写一个简单的程序来显示一些数据.然后，我希望程序以某种方式写入stdout，这样我便可以在命令行上使用管道(|)来管道一些数据了.

I'd like to write a simple program using ncurses for displaying some data. I would then like for the program to write to stdout in such a way that I can then use a pipe (|) on the command line to pipe some data out.

我当前的尝试无效.我可以使用'>'在文件中看到"GOT HERE"，但是还有很多其他的东西.该程序也会立即退出.

My current attempt doesn't work. I can see the "GOT HERE"'s in a file using '>', but there's a whole bunch of other stuff. The program also exits immediately.

#include <stdio.h>
#include <ncurses.h>


int main(int _argc, char ** _argv)
{
    initscr();          /* Start curses mode          */

    printw("Hello World !!!");  /* Print Hello World          */

    refresh();          /* Print it on to the real screen */

    getch();            /* Wait for user input */

    printf("GOT HERE");

    endwin();           /* End curses mode        */

    printf("GOT HERE");

    return 0;
}

这是使用>

^[[?1049h^[[1;29r^[(B^[[m^[[4l^[[?7h^[[H^[[2JHello World !!!^MGOT HERE^[[29;1H^[[?1049l^M^[[?1l^[>GOT HERE

是否可以通过管道使用stdout并同时使用ncurses?

Is it possible to use stdout through a pipeline and ncurses at the same time?

推荐答案

默认情况下，curses写入标准输出，这是您的管道所在的位置.但是，针对诅咒有两种不同的初始化函数: initscr 和 newterm .后者使您可以执行要求的操作，例如:

By default, curses writes to the standard output, which is where your pipe goes. But there are two different initialization functions for curses: initscr and newterm. The latter lets you do what was asked, like this:

#include <stdio.h>
#include <ncurses.h>


int main(int _argc, char ** _argv)
{
    newterm(NULL, stderr, stdin);          /* Start curses mode          */    
    printw("Hello World !!!");  /* Print Hello World          */    
    refresh();          /* Print it on to the real screen */    
    getch();            /* Wait for user input */    
    printf("GOT HERE");    
    endwin();           /* End curses mode        */    
    printf("GOT HERE");    
    return 0;
}

进一步阅读: 和 initscr .

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