scterm.c revision 302408 
1/*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer as
10 *    the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: stable/11/sys/dev/syscons/scterm.c 186681 2009-01-01 13:26:53Z ed $");
30
31#include "opt_syscons.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/consio.h>
37
38#include <dev/syscons/syscons.h>
39
40SET_DECLARE(scterm_set, sc_term_sw_t);
41
42/* exported subroutines */
43
44void
45sc_move_cursor(scr_stat *scp, int x, int y)
46{
47	if (x < 0)
48		x = 0;
49	if (y < 0)
50		y = 0;
51	if (x >= scp->xsize)
52		x = scp->xsize - 1;
53	if (y >= scp->ysize)
54		y = scp->ysize - 1;
55	scp->xpos = x;
56	scp->ypos = y;
57	scp->cursor_pos = scp->ypos*scp->xsize + scp->xpos;
58}
59
60void
61sc_clear_screen(scr_stat *scp)
62{
63	(*scp->tsw->te_clear)(scp);
64	scp->cursor_oldpos = scp->cursor_pos;
65	sc_remove_cutmarking(scp);
66}
67
68/* terminal emulator manager routines */
69
70static LIST_HEAD(, sc_term_sw) sc_term_list =
71	LIST_HEAD_INITIALIZER(sc_term_list);
72
73int
74sc_term_add(sc_term_sw_t *sw)
75{
76	LIST_INSERT_HEAD(&sc_term_list, sw, link);
77	return 0;
78}
79
80int
81sc_term_remove(sc_term_sw_t *sw)
82{
83	LIST_REMOVE(sw, link);
84	return 0;
85}
86
87sc_term_sw_t
88*sc_term_match(char *name)
89{
90	sc_term_sw_t **list;
91	sc_term_sw_t *p;
92
93	if (!LIST_EMPTY(&sc_term_list)) {
94		LIST_FOREACH(p, &sc_term_list, link) {
95			if ((strcmp(name, p->te_name) == 0)
96			    || (strcmp(name, "*") == 0)) {
97				return p;
98			}
99		}
100	} else {
101		SET_FOREACH(list, scterm_set) {
102			p = *list;
103			if ((strcmp(name, p->te_name) == 0)
104			    || (strcmp(name, "*") == 0)) {
105				return p;
106			}
107		}
108	}
109
110	return NULL;
111}
112
113sc_term_sw_t
114*sc_term_match_by_number(int index)
115{
116	sc_term_sw_t *p;
117
118	if (index <= 0)
119		return NULL;
120	LIST_FOREACH(p, &sc_term_list, link) {
121		if (--index <= 0)
122			return p;
123	}
124
125	return NULL;
126}
127