X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/39b49130f530c89c263e299005d5bf6d69a7942d..ad7871609881e73855d0b04da49b486cd93efca7:/usr/src/usr.bin/window/wwgets.c

diff --git a/usr/src/usr.bin/window/wwgets.c b/usr/src/usr.bin/window/wwgets.c
index 30e1800209..1f69fa5e9c 100644
--- a/usr/src/usr.bin/window/wwgets.c
+++ b/usr/src/usr.bin/window/wwgets.c
@@ -1,38 +1,109 @@
-#ifndef lint
-static	char *sccsid = "@(#)wwgets.c	1.4 83/07/27";
-#endif
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
 
-#include "defs.h"
+#ifndef lint
+static char sccsid[] = "@(#)wwgets.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
 
-char *ibufp = ibuf;
+#include "ww.h"
+#include "char.h"
 
-bread()
+wwgets(buf, n, w)
+char *buf;
+int n;
+register struct ww *w;
 {
-	register n;
-	register char *p;
-	int imask;
+	register char *p = buf;
+	register char c;
+	char uc = w->ww_unctrl;
+	static void rub();
 
-	while (ibufc == 0) {
-		wwflush();
-		imask = 1 << 0;
-		while (wwforce(&imask) < 0)
-			;
-		if ((imask & 1 << 0) == 0)
-			continue;
-		if (ibufc == 0) {
-			p = ibufp = ibuf;
-			n = sizeof ibuf;
+	w->ww_unctrl = 0;
+	for (;;) {
+		wwcurtowin(w);
+		while ((c = wwgetc()) < 0)
+			wwiomux();
+#ifdef OLD_TTY
+		if (c == wwoldtty.ww_sgttyb.sg_erase)
+#else
+		if (c == wwoldtty.ww_termios.c_cc[VERASE])
+#endif
+		{
+			if (p > buf)
+				rub(*--p, w);
+		} else
+#ifdef OLD_TTY
+		if (c == wwoldtty.ww_sgttyb.sg_kill)
+#else
+		if (c == wwoldtty.ww_termios.c_cc[VKILL])
+#endif
+		{
+			while (p > buf)
+				rub(*--p, w);
+		} else
+#ifdef OLD_TTY
+		if (c == wwoldtty.ww_ltchars.t_werasc)
+#else
+		if (c == wwoldtty.ww_termios.c_cc[VWERASE])
+#endif
+		{
+			while (--p >= buf && (*p == ' ' || *p == '\t'))
+				rub(*p, w);
+			while (p >= buf && *p != ' ' && *p != '\t')
+				rub(*p--, w);
+			p++;
+		} else if (c == '\r' || c == '\n') {
+			break;
 		} else {
-			p = ibufp + ibufc;
-			n = (ibuf + sizeof ibuf) - p;
+			if (p >= buf + n - 1)
+				wwputc(ctrl('g'), w);
+			else
+				wwputs(unctrl(*p++ = c), w);
 		}
-		if ((n = read(0, p, n)) > 0) {
-			ibufc += n;
-			nreadc += n;
-		} else if (n == 0)
-			nreadz++;
-		else
-			nreade++;
-		nread++;
 	}
+	*p = 0;
+	w->ww_unctrl = uc;
+}
+
+static void
+rub(c, w)
+struct ww *w;
+{
+	register i;
+
+	for (i = strlen(unctrl(c)); --i >= 0;)
+		(void) wwwrite(w, "\b \b", 3);
 }