window(1): Remove __RCSID & friends.
[dragonfly.git] / usr.bin / window / wwgets.c
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2c872e05 1/* @(#)wwgets.c 8.1 (Berkeley) 6/6/93 */
abecab39
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2/* $NetBSD: wwgets.c,v 1.9 2003/08/07 11:17:40 agc Exp $ */
3
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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.
abecab39 19 * 3. Neither the name of the University nor the names of its contributors
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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
abecab39 36#include <string.h>
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37#include "ww.h"
38#include "char.h"
39
5d917f82
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40static void rub(int, struct ww *);
41
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42void
43wwgets(char *buf, int n, struct ww *w)
984263bc 44{
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45 char *p = buf;
46 int c;
47 int uc = ISSET(w->ww_wflags, WWW_UNCTRL);
984263bc 48
abecab39 49 CLR(w->ww_wflags, WWW_UNCTRL);
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50 for (;;) {
51 wwcurtowin(w);
52 while ((c = wwgetc()) < 0)
53 wwiomux();
54#ifdef OLD_TTY
55 if (c == wwoldtty.ww_sgttyb.sg_erase)
56#else
57 if (c == wwoldtty.ww_termios.c_cc[VERASE])
58#endif
59 {
60 if (p > buf)
61 rub(*--p, w);
62 } else
63#ifdef OLD_TTY
64 if (c == wwoldtty.ww_sgttyb.sg_kill)
65#else
66 if (c == wwoldtty.ww_termios.c_cc[VKILL])
67#endif
68 {
69 while (p > buf)
70 rub(*--p, w);
71 } else
72#ifdef OLD_TTY
73 if (c == wwoldtty.ww_ltchars.t_werasc)
74#else
75 if (c == wwoldtty.ww_termios.c_cc[VWERASE])
76#endif
77 {
78 while (--p >= buf && (*p == ' ' || *p == '\t'))
79 rub(*p, w);
80 while (p >= buf && *p != ' ' && *p != '\t')
81 rub(*p--, w);
82 p++;
83 } else if (c == '\r' || c == '\n') {
84 break;
85 } else {
86 if (p >= buf + n - 1)
87 wwputc(ctrl('g'), w);
88 else
abecab39 89 wwputs(unctrl(*p++ = c), w);
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90 }
91 }
92 *p = 0;
abecab39 93 SET(w->ww_wflags, uc);
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94}
95
96static void
abecab39 97rub(int c, struct ww *w)
984263bc 98{
abecab39 99 int i;
984263bc 100
abecab39 101 for (i = strlen(unctrl(c)); --i >= 0;)
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102 (void) wwwrite(w, "\b \b", 3);
103}