freebsd-ports/cad/cider/files/patch-bc

*** cider/common/src/bin/main.c.orig	Sat Mar 12 08:20:59 1994
--- cider/common/src/bin/main.c	Tue Oct 24 03:37:38 2000
***************
*** 25,30 ****
--- 25,37 ----
  #include <pwd.h>
  #endif
  
+ #ifdef HAS_GNUREADLINE
+ /* Added GNU Readline Support 11/3/97 -- Andrew Veliath <veliaa@rpi.edu> */
+ #include <readline/readline.h>
+ #include <readline/history.h>
+ #include "fteinput.h"
+ #endif
+ 
  #ifdef HAS_UNIX_SIGS
  #include <signal.h>
  #endif
***************
*** 36,41 ****
--- 43,53 ----
  #endif
  
  #include "patchlev.h"
+ 
+ #ifdef __FreeBSD__
+ #include <ieeefp.h>
+ #endif
+ 
  #include "suffix.h"
  
  /* (Virtual) Machine architecture parameters */
***************
*** 53,58 ****
--- 65,75 ----
  bool ft_intrpt = false;     /* Set by the (void) signal handlers. */
  bool ft_setflag = false;    /* Don't abort after an interrupt. */
  
+ #ifdef HAS_GNUREADLINE
+ char gnu_history_file[512];
+ static char *application_name;
+ #endif
+ 
  struct variable *(*if_getparam)( );
  
  #ifdef BATCH
***************
*** 185,190 ****
--- 202,294 ----
  
  #endif
  
+ #ifdef HAS_GNUREADLINE
+ /* Adapted ../lib/cp/lexical.c:prompt() for GNU Readline -- Andrew Veliath <veliaa@rpi.edu> */
+ static char *
+ prompt()
+ {
+     static char pbuf[128];
+     int n = sizeof(pbuf);
+     char *p = pbuf, *s;
+ 
+     if (cp_interactive == false)
+         return;
+     if (cp_promptstring == NULL)
+         s = "-> ";
+     else
+         s = cp_promptstring;
+     if (cp_altprompt)
+         s = cp_altprompt;
+     while (*s && (n > 1)) {
+ 	int w;
+         switch (strip(*s)) {
+ 	case '!':
+ 	    w = snprintf(p, n, "%d", where_history() + 1);
+ 	    w = (w >= n) ? n - 1 : w;
+ 	    p += w;
+ 	    n -= w;
+ 	    break;
+ 	default:
+ 	    *p = strip(*s); ++p;
+ 	    --n;
+ 	    break;
+         }
+         s++;
+     }
+     *p = 0;
+     return pbuf;
+ }
+ 
+ /* Process device events in Readline's hook since there is no where
+    else to do it now - AV */
+ int rl_event_func()
+ {
+     static REQUEST reqst = { checkup_option, 0 };
+     Input(&reqst, NULL);
+     return 0;
+ }
+ 
+ /* Added GNU Readline Support -- Andrew Veliath <veliaa@rpi.edu> */
+ void app_rl_readlines()
+ {
+     char *line, *expanded_line;
+ 
+     strcpy(gnu_history_file, getenv("HOME"));
+     strcat(gnu_history_file, "/.");
+     strcat(gnu_history_file, application_name);
+     strcat(gnu_history_file, "_history");
+ 
+     using_history();
+     read_history(gnu_history_file);
+ 
+     rl_readline_name = application_name;
+     rl_instream = cp_in;
+     rl_outstream = cp_out;
+     rl_event_hook = rl_event_func;
+ 	
+     while (1) {
+ 	history_set_pos(history_length);
+ 	line = readline(prompt());
+ 	if (line && *line) {
+ 	    int s = history_expand(line, &expanded_line);
+ 		    
+ 	    if (s == 2) {
+ 		fprintf(stderr, "-> %s\n", expanded_line);
+ 	    } else if (s == -1) {
+ 		fprintf(stderr, "readline: %s\n", expanded_line);
+ 	    } else {
+ 		cp_evloop(expanded_line);
+ 		add_history(expanded_line);
+ 	    }
+ 	    free(expanded_line);
+ 	}
+ 	if (line) free(line);
+ 	else if (line == NULL) cp_evloop("quit");
+     }
+     /* History gets written in ../fte/misccoms.c com_quit */
+ }
+ #endif /* HAS_GNUREADLINE */
+ 
  char *hlp_filelist[] = { "spice", "cider", 0 };
  
  void
***************
*** 216,221 ****
--- 320,329 ----
  
  #endif
  
+ #ifdef __FreeBSD__
+     fpsetmask(fpgetmask() & ~FP_X_INV & ~FP_X_DZ & ~FP_X_OFL);
+ #endif
+ 
      /* MFB tends to jump to 0 on errors.  This tends to catch it. */
      if (started) {
          fprintf(cp_err, "main: Internal Error: jump to zero\n");
***************
*** 236,241 ****
--- 344,356 ----
      ARCHsize = 1;
  #endif /* PARALLEL_ARCH */
  
+ #ifdef HAS_GNUREADLINE
+     if (!(application_name = strrchr(av[0],'/')))
+         application_name = av[0];
+     else
+         ++application_name;
+ #endif
+ 
  #ifdef HAS_MAC_ARGCARGV
      ac = initmac(&av);
  #endif
***************
*** 472,478 ****
--- 587,597 ----
  #  ifdef HAS_UNIX_SIGS
      /* Set up (void) signal handling */
      if (!ft_batchmode) {
+ #    ifdef HAS_GNUREADLINE
+         (void) signal(SIGINT, SIG_IGN);
+ #    else
          (void) signal(SIGINT, ft_sigintr);
+ #    endif
          (void) signal(SIGFPE, sigfloat);
  #    ifdef SIGTSTP
          (void) signal(SIGTSTP, sigstop);
***************
*** 668,674 ****
--- 787,797 ----
      } else {
          (void) setjmp(jbuf);
          cp_interactive = true;
+ #ifdef HAS_GNUREADLINE
+ 	app_rl_readlines();
+ #else
  	while (cp_evloop((char *) NULL) == 1) ;
+ #endif /* ifelse HAS_GNUREADLINE */
      }
  
  #  else /* if BATCH */
***************
*** 708,714 ****
--- 831,841 ----
      /* Nutmeg "main" */
      (void) setjmp(jbuf);
      cp_interactive = true;
+ #ifdef HAS_GNUREADLINE
+     app_rl_readlines();
+ #else
      while (cp_evloop((char *) NULL) == 1) ;
+ #endif /* ifelse HAS_GNUREADLINE */
  
  #endif