🚀 go-pugleaf

Here is a patch to ephem version 4.13 that uses select() to check for a
pending keystroke. On my system select() seems to work better than either
of the two alternatives that are already built in.

*** io.c.orig	Thu Apr 12 07:29:36 1990
--- io.c	Thu Apr 12 07:30:13 1990
***************
*** 21,26 ****
--- 21,27 ----
   */
  
  #define	UNIX
+ #define USE_SELECT
  /* #define USE_NDELAY */
  /* #define TURBO_C */
  /* #define USE_ANSISYS */
***************
*** 29,34 ****
--- 30,38 ----
  #include "screen.h"
  
  #ifdef UNIX
+ #ifdef USE_SELECT
+ #include <sys/time.h>
+ #endif
  #include <sgtty.h>
  #include <signal.h>
  #ifdef USE_NDELAY
***************
*** 81,90 ****
--- 85,104 ----
  	    sav_char = 0;
  	return (sav_char ? 0 : -1);
  #else
+ #ifdef USE_SELECT
+ 	struct timeval timeout;
+ 	int readfs = 1<<0;
+ 	int nfound;
+ 
+ 	memset((char *)&timeout, 0, sizeof(struct timeval));
+ 	nfound = select(1, &readfs, 0, 0, &timeout);
+ 	return ((nfound > 0) ? 0 : -1);
+ #else
  	long n;
  	if (!ttysetup) setuptty();
  	ioctl (0, FIONREAD, &n);
  	return (n > 0 ? 0 : -1);
+ #endif
  #endif
  }
  
--
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