1 /* $OpenBSD: wwgets.c,v 1.6 2003/06/03 02:56:23 millert Exp $ */
2 /* $NetBSD: wwgets.c,v 1.6 1996/02/08 20:45:08 mycroft Exp $ */
3
4 /*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "@(#)wwgets.c 8.1 (Berkeley) 6/6/93";
39 #else
40 static char rcsid[] = "$OpenBSD: wwgets.c,v 1.6 2003/06/03 02:56:23 millert Exp $";
41 #endif
42 #endif /* not lint */
43
44 #include "ww.h"
45 #include "char.h"
46 #include <string.h>
47
wwgets(buf,n,w)48 wwgets(buf, n, w)
49 char *buf;
50 int n;
51 struct ww *w;
52 {
53 char *p = buf;
54 int c;
55 int uc = ISSET(w->ww_wflags, WWW_UNCTRL);
56 static void rub();
57
58 CLR(w->ww_wflags, WWW_UNCTRL);
59 for (;;) {
60 wwcurtowin(w);
61 while ((c = wwgetc()) < 0)
62 wwiomux();
63 #ifdef OLD_TTY
64 if (c == wwoldtty.ww_sgttyb.sg_erase)
65 #else
66 if (c == wwoldtty.ww_termios.c_cc[VERASE])
67 #endif
68 {
69 if (p > buf)
70 rub(*--p, w);
71 } else
72 #ifdef OLD_TTY
73 if (c == wwoldtty.ww_sgttyb.sg_kill)
74 #else
75 if (c == wwoldtty.ww_termios.c_cc[VKILL])
76 #endif
77 {
78 while (p > buf)
79 rub(*--p, w);
80 } else
81 #ifdef OLD_TTY
82 if (c == wwoldtty.ww_ltchars.t_werasc)
83 #else
84 if (c == wwoldtty.ww_termios.c_cc[VWERASE])
85 #endif
86 {
87 while (--p >= buf && (*p == ' ' || *p == '\t'))
88 rub(*p, w);
89 while (p >= buf && *p != ' ' && *p != '\t')
90 rub(*p--, w);
91 p++;
92 } else if (c == '\r' || c == '\n') {
93 break;
94 } else {
95 if (p >= buf + n - 1)
96 wwputc(ctrl('g'), w);
97 else
98 wwputs(unctrl(*p++ = c), w);
99 }
100 }
101 *p = 0;
102 SET(w->ww_wflags, uc);
103 }
104
105 static void
rub(c,w)106 rub(c, w)
107 struct ww *w;
108 {
109 int i;
110
111 for (i = strlen(unctrl(c)); --i >= 0;)
112 (void) wwwrite(w, "\b \b", 3);
113 }
114