X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/0e64e42293a904a6e3adf2de26bbbd16d8c6711c..d93758100f2a0e2107957c31450a3e9c6bf278b8:/usr/src/usr.bin/window/wwinit.c

diff --git a/usr/src/usr.bin/window/wwinit.c b/usr/src/usr.bin/window/wwinit.c
index a9b21a4894..be9bfcbb09 100644
--- a/usr/src/usr.bin/window/wwinit.c
+++ b/usr/src/usr.bin/window/wwinit.c
@@ -1,6 +1,23 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
 #ifndef lint
-static	char *sccsid = "@(#)wwinit.c	3.17 84/04/08";
-#endif
+static char sccsid[] = "@(#)wwinit.c	3.35 (Berkeley) %G%";
+#endif /* not lint */
 
 #include "ww.h"
 #include "tt.h"
@@ -12,22 +29,19 @@ wwinit()
 {
 	register i, j;
 	char *kp;
-	register char **p, **q;
-	char **env, **termcap;
-	extern char **environ;
+	int s;
 
-#ifndef O_4_1A
 	wwdtablesize = getdtablesize();
-#else
-#include <sys/param.h>
-	wwdtablesize = NOFILE;
-#endif
 	wwhead.ww_forw = &wwhead;
 	wwhead.ww_back = &wwhead;
 
-	if (signal(SIGIO, wwrint) == BADSIG)
+	s = sigblock(sigmask(SIGIO));
+	if (signal(SIGIO, wwrint) == BADSIG ||
+	    signal(SIGCHLD, wwchild) == BADSIG ||
+	    signal(SIGPIPE, SIG_IGN) == BADSIG) {
+		wwerrno = WWE_SYS;
 		return -1;
-	(void) sighold(SIGIO);
+	}
 
 	if (wwgettty(0, &wwoldtty) < 0)
 		return -1;
@@ -53,8 +67,7 @@ wwinit()
 	wwnewtty.ww_lmode = wwoldtty.ww_lmode | LLITOUT;
 	wwnewtty.ww_ldisc = wwoldtty.ww_ldisc;
 	wwnewtty.ww_fflags = wwoldtty.ww_fflags | FASYNC;
-
-	if (wwsettty(0, &wwnewtty) < 0)
+	if (wwsettty(0, &wwnewtty, &wwoldtty) < 0)
 		goto bad;
 
 	if ((wwterm = getenv("TERM")) == 0) {
@@ -67,13 +80,12 @@ wwinit()
 	}
 	wwbaud = wwbaudmap[wwoldtty.ww_sgttyb.sg_ospeed];
 
-	if (ttinit() < 0)
+	if (xxinit() < 0)
 		goto bad;
 	wwnrow = tt.tt_nrow;
 	wwncol = tt.tt_ncol;
 	wwavailmodes = tt.tt_availmodes;
 	wwwrap = tt.tt_wrap;
-	(*tt.tt_init)();
 
 	if (wwavailmodes & WWM_REV)
 		wwcursormodes = WWM_REV | wwavailmodes & WWM_BLK;
@@ -114,63 +126,79 @@ wwinit()
 	for (i = 0; i < wwnrow; i++)
 		wwtouched[i] = 0;
 
+	wwupd = (struct ww_update *) malloc((unsigned) wwnrow * sizeof *wwupd);
+	if (wwupd == 0) {
+		wwerrno = WWE_NOMEM;
+		goto bad;
+	}
+
 	wwindex[WWX_NOBODY] = &wwnobody;
 	wwnobody.ww_order = NWW;
 
-	kp = wwkeys;
-	addcap("kb", &kp);
-	addcap("ku", &kp);
-	addcap("kd", &kp);
-	addcap("kl", &kp);
-	addcap("kr", &kp);
-	addcap("kh", &kp);
+	kp = wwwintermcap;
+	if (wwavailmodes & WWM_REV)
+		wwaddcap1(WWT_REV, &kp);
+	if (wwavailmodes & WWM_BLK)
+		wwaddcap1(WWT_BLK, &kp);
+	if (wwavailmodes & WWM_UL)
+		wwaddcap1(WWT_UL, &kp);
+	if (wwavailmodes & WWM_GRP)
+		wwaddcap1(WWT_GRP, &kp);
+	if (wwavailmodes & WWM_DIM)
+		wwaddcap1(WWT_DIM, &kp);
+	if (wwavailmodes & WWM_USR)
+		wwaddcap1(WWT_USR, &kp);
+	if (tt.tt_insline && tt.tt_delline || tt.tt_setscroll)
+		wwaddcap1(WWT_ALDL, &kp);
+	if (tt.tt_inschar || tt.tt_insspace)
+		wwaddcap1(WWT_IMEI, &kp);
+	if (tt.tt_delchar)
+		wwaddcap1(WWT_DC, &kp);
+	wwaddcap("kb", &kp);
+	wwaddcap("ku", &kp);
+	wwaddcap("kd", &kp);
+	wwaddcap("kl", &kp);
+	wwaddcap("kr", &kp);
+	wwaddcap("kh", &kp);
 	if ((j = tgetnum("kn")) >= 0) {
 		char cap[32];
-		int i;
 
 		(void) sprintf(kp, "kn#%d:", j);
 		for (; *kp; kp++)
 			;
 		for (i = 1; i <= j; i++) {
 			(void) sprintf(cap, "k%d", i);
-			addcap(cap, &kp);
+			wwaddcap(cap, &kp);
 			cap[0] = 'l';
-			addcap(cap, &kp);
+			wwaddcap(cap, &kp);
 		}
 	}
-	for (i = 0, p = environ; *p++; i++)
-		;
-	if ((env = (char **)malloc((unsigned)(i + 3) * sizeof (char *))) == 0)
-		goto bad;
-	for (p = environ, q = env; *p; p++, q++) {
-		if (strncmp(*p, "TERM=", 5) == 0)
-			*q = WWT_TERM;
-		else if (strncmp(*p, "TERMCAP=", 8) == 0)
-			termcap = q;
-		else
-			*q = *p;
-	}
-	*(termcap ? termcap : q++) = wwwintermcap;
-	*q = 0;
-	environ = env;
+	/*
+	 * It's ok to do this here even if setenv() is destructive
+	 * since tt_init() has already made its own copy of it and
+	 * wwterm now points to the copy.
+	 */
+	(void) setenv("TERM", WWT_TERM, 1);
 
-	(void) sigrelse(SIGIO);
+	(void) sigsetmask(s);
+	/* catch typeahead before ASYNC was set */
+	(void) kill(getpid(), SIGIO);
+	xxstart();
 	return 0;
 bad:
 	/*
 	 * Don't bother to free storage.  We're supposed
 	 * to exit when wwinit fails anyway.
 	 */
-	(void) wwsettty(0, &wwoldtty);
+	(void) wwsettty(0, &wwoldtty, &wwnewtty);
 	(void) signal(SIGIO, SIG_DFL);
-	(void) sigrelse(SIGIO);
+	(void) sigsetmask(s);
 	return -1;
 }
 
-static
-addcap(cap, kp)
-register char *cap;
-register char **kp;
+wwaddcap(cap, kp)
+	register char *cap;
+	register char **kp;
 {
 	char tbuf[512];
 	char *tp = tbuf;
@@ -189,3 +217,12 @@ register char **kp;
 		**kp = 0;
 	}
 }
+
+wwaddcap1(cap, kp)
+	register char *cap;
+	register char **kp;
+{
+	while (*(*kp)++ = *cap++)
+		;
+	(*kp)--;
+}