$NetBSD: patch-ab,v 1.6 2014/09/12 03:54:13 dholland Exp $

Rip out struct sgttyb and termio and other prehistoric stuff. Use only
termios, except leave the OS2 and MINIX cases alone. The latter
probably should be removed too, but let's wait to hear from some Minix
users.

Also, make the termios code that was already here actually work.

--- termio.c.orig	2014-09-12 03:38:15.000000000 +0000
+++ termio.c
@@ -12,9 +12,6 @@
 #include    <errno.h>
 #include    <stdio.h>
 #include    <signal.h>
-#ifdef BSD
-#include    <sys/ioctl.h>
-#else
 #ifdef OS2
 #ifndef __EMX__
 #define INCL_NOPM
@@ -28,15 +25,10 @@
 #include    <sgtty.h>
 #define O_NDELAY O_NONBLOCK
 #else
-#ifdef __GLIBC__
+#include <sys/ioctl.h>
 #include <termios.h>
-#else 
-#include <termio.h>
-#endif /* __GLIBC__ */
 #endif /* MINIX */
 #endif /* OS2 */
-#endif /* BSD */
-#include    <errno.h>
 #include    <fcntl.h>
 #include    "def.h"
 int kbdflgs;			/* saved keyboard fd flags  */
@@ -44,10 +36,6 @@ int kbdpoll;			/* in O_NDELAY mode      
 int kbdqp;			/* there is a char in kbdq  */
 char kbdq;			/* char we've already read  */
 
-#ifdef BSD
-struct sgttyb otermb;
-struct sgttyb ntermb;
-#else
 #ifdef OS2
 #ifndef __EMX__
 KBDINFO kbst, kbst_std;
@@ -58,21 +46,12 @@ struct sgttyb otermio;		/* original term
 struct sgttyb ntermio;		/* charactoristics to use inside */
 struct tchars tchars, tcharsorig;
 #else
-#ifdef __GLIBC__
-#include <sys/ioctl.h>
+#include <termios.h>
 struct termios otermio;
 struct termios ntermio;
-#else
-struct termio otermio;		/* original terminal characteristics */
-struct termio ntermio;		/* charactoristics to use inside */
-#endif /* __GLIBC__ */
 #endif /* MINIX */
 #endif /* OS2 */
-#endif /* BSD */
 
-#ifndef OS2
-//extern errno;			/* System error number -- Necessary when compiling in BSD 1.13 */
-#endif
 
 int nrow;			/* Terminal size, rows.         */
 int ncol;			/* Terminal size, columns.      */
@@ -86,42 +65,37 @@ int ncol;			/* Terminal size, columns.  
 void
 ttopen ()
 {
-#ifdef BSD
-#ifdef ULTRIX
+#if !defined(OS2) && !defined(MINIX)
+
+#if defined(TIOCGWINSZ)
     struct winsize ttysize;
-#else
+#elif defined(TIOCGSIZE)
     struct ttysize ttysize;
 #endif
 
-    ioctl (0, TIOCGETP, &otermb);	/* save settings	*/
-    ntermb = otermb;		/* setup new settings	*/
-    ntermb.sg_flags &= ~ECHO;
-    ntermb.sg_flags |= RAW;
-    ioctl (0, TIOCSETP, &ntermb);	/* and activate them	*/
-    kbdpoll = FALSE;
-
     /* on all screens we are not sure of the initial position
    of the cursor                    */
     ttrow = 999;
     ttcol = 999;
-#ifdef ULTRIX
+#if defined(TIOCGWINSZ)
     if (ioctl (0, TIOCGWINSZ, &ttysize) == 0)
     {
 	nrow = ttysize.ws_row;
 	ncol = ttysize.ws_col;
-#else
+    } else
+#elif defined(TIOCGSIZE)
     if (ioctl (0, TIOCGSIZE, &ttysize) == 0)
     {
 	nrow = ttysize.ts_lines;
 	ncol = ttysize.ts_cols;
+    } else
 #endif /* ULTRIX */
-    }
-    else
     {
 	nrow = NROW;
 	ncol = NCOL;
     }
-#else
+#endif /* not OS2 or MINIX */
+
 #ifdef OS2
     setmode (1, O_BINARY);
 #else
@@ -137,33 +111,23 @@ ttopen ()
 	tchars.t_stopc = tchars.t_eofc = tchars.t_brkc = -1;
     ioctl (0, TIOCSETC, &tchars);
 #else
-#ifdef __GLIBC__
     tcgetattr(0,&otermio);
-#else
-    ioctl (0, TCGETA, &otermio);/* save old settings */
-    ntermio.c_line = otermio.c_line;
-#endif
+#if 0 /* horribly wrong -- never do this! */
     ntermio.c_iflag = 0;	/* setup new settings */
     ntermio.c_oflag = 0;
     ntermio.c_cflag = otermio.c_cflag;
     ntermio.c_lflag = 0;
+#else
+    ntermio = otermio;
+    ntermio.c_lflag &= ~(ECHO|ECHONL|ECHOCTL|ISIG|ICANON);
+#endif
     ntermio.c_cc[VMIN] = 1;
     ntermio.c_cc[VTIME] = 0;
-#ifdef __GLIBC__
     tcsetattr(0,TCSANOW,&ntermio);
-#else
-    ioctl (0, TCSETAW, &ntermio);	/* and activate them */
-#endif
 #endif /* MINIX */
     kbdflgs = fcntl (0, F_GETFL, 0);
     kbdpoll = FALSE;
 #endif /* OS2 */
-    /* on all screens we are not sure of the initial position of the cursor */
-    ttrow = 999;
-    ttcol = 999;
-    nrow = NROW;
-    ncol = NCOL;
-#endif /* BSD */
 }
 
  /*
@@ -174,10 +138,6 @@ ttopen ()
 void
 ttclose ()
 {
-#ifdef BSD
-    if (ioctl (0, TIOCSETP, &otermb) == -1)	/* restore terminal settings */
-	printf ("closing ioctl on dev 0 failure, error = %d\n", errno);
-#else
 #ifdef OS2
     setmode (1, O_TEXT);
 #else
@@ -186,17 +146,12 @@ ttclose ()
 	ioctl (0, TIOCSETC, &tcharsorig) == -1)
 	printf ("closing ioctl on dev 0 failure, error = %d\n", errno);
 #else
-#ifdef __GLIBC__
     if( tcsetattr(0,TCSANOW,&otermio) == -1)
-#else
-    if (ioctl (0, TCSETAW, &otermio) == -1)	/* restore terminal settings */
-#endif
 	printf ("closing ioctl on dev 0 failure, error = %d\n", errno);
 #endif /* MINIX */
     if (fcntl (0, F_SETFL, kbdflgs) == -1)
 	printf ("closing fcntl on dev 0 failure, error = %d\n", errno);
 #endif /* OS2 */
-#endif /* BSD */
 }
 
 #ifdef OS2
@@ -235,7 +190,7 @@ ttcooked (void)
 #endif
 }
 
-#endif
+#endif /* OS2 */
 
  /*
 * Write a character to the display. On VMS, terminal output is buffered, and
@@ -336,7 +291,7 @@ int ttgetc ()
 	kbdqp = FALSE;
     else
     {
-#ifdef BSD
+#if defined(FIONREAD)
 	int count;
 
 	if (kbdpoll && (ioctl (0, FIONREAD, &count), count == 0))
@@ -372,7 +327,7 @@ int ttkeyready ()
 #else
     if (!kbdqp)
     {
-#ifdef BSD
+#if defined(FIONREAD)
 	int count;
 
 	if (!kbdpoll && (ioctl (0, FIONREAD, &count), count == 0))
@@ -389,7 +344,7 @@ int ttkeyready ()
 	kbdpoll = TRUE;		/*  fix in 1.13 */
 	kbdqp = (1 == read (0, &kbdq, 1));
 #endif /* MINIX */
-#endif /* BSD */
+#endif /* FIONREAD */
 
     }
     return (kbdqp);