Knowledge Base Nr: 00131 main.cpp - http://www.swe-kaiser.de

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linux: template consolenprogramm non-blocking input mit curses

  
//build: g++ main.cpp -o myname -lncurses

#include <iostream.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <termios.h>
#include <signal.h>
#include <string.h>

#include <curses.h>


///////////globale definitionen//////////////////////////



//////////////////main/////////////////////////////////////////
//#define TRACE
#define TRACE printf

int main(int argc, char *argv[])
{
  initscr();
  cbreak();
  fcntl(fileno(stdin), F_SETFL, fcntl(fileno(stdin), F_GETFL) | O_NONBLOCK);

  printf("*** %s\r\n*** usage: %s [a] [b] [c]\r\n", argv[0], argv[0]);
  TRACE("* args: %s", argv[0]);
  for (int n=1; n<argc; n++)
    TRACE(" [%s]", argv[n]);
  TRACE("\r\n");

  while (1)
  {
    char c = 0;
    int r = fread(&c, 1, 1, stdin);
    if (r>0)
    {
      switch (c)
      {
      case 'a': printf("a");
                break;
      case 'b': printf("b");
                break;
      case 'c': printf("c");
                break;

      default:  printf("\r\nunknown command [%c]???\r\n", c);
      }
    }

    //todo
    TRACE(".");

    fflush(stdout);
    usleep(100 * 1000); //100ms
  } //while(1)

  endwin();

  return EXIT_SUCCESS;
}