date and time created 83/02/11 15:44:35 by rrh

[unix-history] / usr / src / usr.bin / tset / reset.c

diff --git a/usr/src/usr.bin/tset/reset.c b/usr/src/usr.bin/tset/reset.c
index 1e1fd2b..10e9e49 100644 (file)
--- a/usr/src/usr.bin/tset/reset.c
+++ b/usr/src/usr.bin/tset/reset.c
@@ -1,33 +1,48 @@
-static char *sccsid = "@(#)reset.c     4.1 (Berkeley) %G%";
+static char *sccsid = "@(#)reset.c     4.3 (Berkeley) %G%";

 /*
 /*

- * reset - set the teletype mode bits to be sensible
- *
- * Kurt Shoens
- *
- * Very useful after crapping out in raw.
- * Modified by Mark Horton to know about tchars
- * and to not mess with peoples chars unless they are null.
+ * reset - restore tty to sensible state after crapping out in raw mode.

  */
 #include <sgtty.h>
  */
 #include <sgtty.h>

-#define chk(val, dft) (val==0 ? dft : val)
+
+#define        CTRL(x) ('x'&037)

 
 main()
 {
        struct sgttyb buf;
        struct tchars tbuf;
 
 main()
 {
        struct sgttyb buf;
        struct tchars tbuf;

+       struct ltchars ltbuf;

 
        gtty(2, &buf);
        ioctl(2, TIOCGETC, &tbuf);
 
        gtty(2, &buf);
        ioctl(2, TIOCGETC, &tbuf);

+       ioctl(2, TIOCGLTC, &ltbuf);

        buf.sg_flags &= ~(RAW|CBREAK|VTDELAY|ALLDELAY);
        buf.sg_flags |= XTABS|ECHO|CRMOD|ANYP;
        buf.sg_flags &= ~(RAW|CBREAK|VTDELAY|ALLDELAY);
        buf.sg_flags |= XTABS|ECHO|CRMOD|ANYP;

-       buf.sg_erase = chk(buf.sg_erase, '\08');        /* ^H */
-       buf.sg_kill = chk(buf.sg_kill, '\30');          /* ^X */
-       tbuf.t_intrc = chk(tbuf.t_intrc, '\177');       /* ^? */
-       tbuf.t_quitc = chk(tbuf.t_quitc, '\34');        /* ^\ */
-       tbuf.t_startc = chk(tbuf.t_startc, '\22');      /* ^Q */
-       tbuf.t_stopc = chk(tbuf.t_stopc, '\24');        /* ^S */
-       tbuf.t_eofc = chk(tbuf.t_eofc, '\4');           /* ^D */
+       reset(&buf.sg_erase, CTRL(h));
+       reset(&buf.sg_kill, '@');
+       reset(&tbuf.t_intrc, 0177);
+       reset(&tbuf.t_quitc, CTRL(\\\\));
+       reset(&tbuf.t_startc, CTRL(q));
+       reset(&tbuf.t_stopc, CTRL(s));
+       reset(&tbuf.t_eofc, CTRL(d));
+       reset(&ltbuf.t_suspc, CTRL(z));
+       reset(&ltbuf.t_dsuspc, CTRL(y));
+       reset(&ltbuf.t_rprntc, CTRL(r));
+       reset(&ltbuf.t_flushc, CTRL(o));
+       reset(&ltbuf.t_lnextc, CTRL(v));
+       reset(&ltbuf.t_werasc, CTRL(w));

        /* brkc is left alone */
        ioctl(2, TIOCSETN, &buf);
        ioctl(2, TIOCSETC, &tbuf);
        /* brkc is left alone */
        ioctl(2, TIOCSETN, &buf);
        ioctl(2, TIOCSETC, &tbuf);

+       ioctl(2, TIOCSLTC, &ltbuf);
+       execlp("tset", "tset", "-Q", "-I", 0);  /* fix term dependent stuff */
+       exit(1);
+}
+
+reset(cp, def)
+       char *cp;
+       int def;
+{
+
+       if (*cp == 0 || (*cp&0377)==0377)
+               *cp = def;

 }
 }