scterm.c revision 78161 
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 * $FreeBSD: head/sys/dev/syscons/scterm.c 78161 2001-06-13 10:58:39Z peter $
27 */
28
29#include "opt_syscons.h"
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/consio.h>
35
36#include <dev/syscons/syscons.h>
37#include <dev/syscons/sctermvar.h>
38
39SET_DECLARE(scterm_set, sc_term_sw_t);
40
41/* exported subroutines */
42
43void
44sc_move_cursor(scr_stat *scp, int x, int y)
45{
46	if (x < 0)
47		x = 0;
48	if (y < 0)
49		y = 0;
50	if (x >= scp->xsize)
51		x = scp->xsize - 1;
52	if (y >= scp->ysize)
53		y = scp->ysize - 1;
54	scp->xpos = x;
55	scp->ypos = y;
56	scp->cursor_pos = scp->ypos*scp->xsize + scp->xpos;
57}
58
59void
60sc_clear_screen(scr_stat *scp)
61{
62	(*scp->tsw->te_clear)(scp);
63	scp->cursor_oldpos = scp->cursor_pos;
64	sc_remove_cutmarking(scp);
65}
66
67/* terminal emulator manager routines */
68
69static LIST_HEAD(, sc_term_sw) sc_term_list =
70	LIST_HEAD_INITIALIZER(sc_term_list);
71
72int
73sc_term_add(sc_term_sw_t *sw)
74{
75	LIST_INSERT_HEAD(&sc_term_list, sw, link);
76	return 0;
77}
78
79int
80sc_term_remove(sc_term_sw_t *sw)
81{
82	LIST_REMOVE(sw, link);
83	return 0;
84}
85
86sc_term_sw_t
87*sc_term_match(char *name)
88{
89	sc_term_sw_t **list;
90	sc_term_sw_t *p;
91
92	if (!LIST_EMPTY(&sc_term_list)) {
93		LIST_FOREACH(p, &sc_term_list, link) {
94			if ((strcmp(name, p->te_name) == 0)
95			    || (strcmp(name, "*") == 0)) {
96				return p;
97			}
98		}
99	} else {
100		SET_FOREACH(list, scterm_set) {
101			p = *list;
102			if ((strcmp(name, p->te_name) == 0)
103			    || (strcmp(name, "*") == 0)) {
104				return p;
105			}
106		}
107	}
108
109	return NULL;
110}
111
112sc_term_sw_t
113*sc_term_match_by_number(int index)
114{
115	sc_term_sw_t *p;
116
117	if (index <= 0)
118		return NULL;
119	LIST_FOREACH(p, &sc_term_list, link) {
120		if (--index <= 0)
121			return p;
122	}
123
124	return NULL;
125}
126