getinput.c File Reference

00061 {
00062   int flags;
00063   int nchars;
00064   int index = 0;
00065 
00066   /* save the flags */
00067   flags = fcntl(STDIN_FILENO, F_GETFL);
00068 
00069   /* make terminal non-blocking */
00070   fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
00071 
00072   /* read the outstanding chars, one by one, until newline or no more */
00073   while (1 == (nchars = read(STDIN_FILENO, &buffer[index], 1)))
00074     {
00075       if (buffer[index++] == '\n')
00076         {
00077           buffer[index] = 0;    /* null terminate */
00078           break;
00079         }
00080     }
00081 
00082   /* restore the terminal */
00083   fcntl(STDIN_FILENO, F_SETFL, flags);
00084 
00085   if (nchars == -1)
00086     {
00087       return -1;                /* nothing new */
00088     }
00089 
00090   if (nchars == 0)
00091     {
00092       return 0;                 /* end of file */
00093     }
00094 
00095   return index;
00096 }

getinput.c File Reference

Functions

Function Documentation

Functions
int	getinput (char *buffer, int maxchars)