Pre-2.0 release, synchronize with HAMMER 61H
[dragonfly.git] / usr.bin / window / wwgets.c
blob1eb9805dfae6a1c40ac08dfc3ed03a7ded5d8050
1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
36 * @(#)wwgets.c 8.1 (Berkeley) 6/6/93
37 * $FreeBSD: src/usr.bin/window/wwgets.c,v 1.3.14.1 2001/05/17 09:45:01 obrien Exp $
38 * $DragonFly: src/usr.bin/window/wwgets.c,v 1.3 2005/05/07 23:20:43 corecode Exp $
41 #include "ww.h"
42 #include "char.h"
44 static void rub(int, struct ww *);
46 wwgets(buf, n, w)
47 char *buf;
48 int n;
49 register struct ww *w;
51 register char *p = buf;
52 register int c;
53 char uc = w->ww_unctrl;
55 w->ww_unctrl = 0;
56 for (;;) {
57 wwcurtowin(w);
58 while ((c = wwgetc()) < 0)
59 wwiomux();
60 #ifdef OLD_TTY
61 if (c == wwoldtty.ww_sgttyb.sg_erase)
62 #else
63 if (c == wwoldtty.ww_termios.c_cc[VERASE])
64 #endif
66 if (p > buf)
67 rub(*--p, w);
68 } else
69 #ifdef OLD_TTY
70 if (c == wwoldtty.ww_sgttyb.sg_kill)
71 #else
72 if (c == wwoldtty.ww_termios.c_cc[VKILL])
73 #endif
75 while (p > buf)
76 rub(*--p, w);
77 } else
78 #ifdef OLD_TTY
79 if (c == wwoldtty.ww_ltchars.t_werasc)
80 #else
81 if (c == wwoldtty.ww_termios.c_cc[VWERASE])
82 #endif
84 while (--p >= buf && (*p == ' ' || *p == '\t'))
85 rub(*p, w);
86 while (p >= buf && *p != ' ' && *p != '\t')
87 rub(*p--, w);
88 p++;
89 } else if (c == '\r' || c == '\n') {
90 break;
91 } else {
92 if (p >= buf + n - 1)
93 wwputc(ctrl('g'), w);
94 else
95 if (isctrl(c))
96 wwputs(unctrl(*p++ = c), w);
97 else
98 wwputc(*p++ = c, w);
101 *p = 0;
102 w->ww_unctrl = uc;
105 static void
106 rub(c, w)
107 struct ww *w;
109 register i;
111 for (i = isctrl(c) ? strlen(unctrl(c)) : 1; --i >= 0;)
112 (void) wwwrite(w, "\b \b", 3);