scterm.c revision 60938 
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 60938 2000-05-26 02:09:24Z jake $
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
39/* exported subroutines */
40
41void
42sc_move_cursor(scr_stat *scp, int x, int y)
43{
44	if (x < 0)
45		x = 0;
46	if (y < 0)
47		y = 0;
48	if (x >= scp->xsize)
49		x = scp->xsize - 1;
50	if (y >= scp->ysize)
51		y = scp->ysize - 1;
52	scp->xpos = x;
53	scp->ypos = y;
54	scp->cursor_pos = scp->ypos*scp->xsize + scp->xpos;
55}
56
57void
58sc_clear_screen(scr_stat *scp)
59{
60	(*scp->tsw->te_clear)(scp);
61	scp->cursor_oldpos = scp->cursor_pos;
62	sc_remove_cutmarking(scp);
63}
64
65/* terminal emulator manager routines */
66
67static LIST_HEAD(, sc_term_sw) sc_term_list =
68	LIST_HEAD_INITIALIZER(sc_term_list);
69
70int
71sc_term_add(sc_term_sw_t *sw)
72{
73	LIST_INSERT_HEAD(&sc_term_list, sw, link);
74	return 0;
75}
76
77int
78sc_term_remove(sc_term_sw_t *sw)
79{
80	LIST_REMOVE(sw, link);
81	return 0;
82}
83
84sc_term_sw_t
85*sc_term_match(char *name)
86{
87	sc_term_sw_t **list;
88	sc_term_sw_t *p;
89
90	if (!LIST_EMPTY(&sc_term_list)) {
91		LIST_FOREACH(p, &sc_term_list, link) {
92			if ((strcmp(name, p->te_name) == 0)
93			    || (strcmp(name, "*") == 0)) {
94				return p;
95			}
96		}
97	} else {
98		list = (sc_term_sw_t **)scterm_set.ls_items;
99		while ((p = *list++) != NULL) {
100			if ((strcmp(name, p->te_name) == 0)
101			    || (strcmp(name, "*") == 0)) {
102				return p;
103			}
104		}
105	}
106
107	return NULL;
108}
109
110sc_term_sw_t
111*sc_term_match_by_number(int index)
112{
113	sc_term_sw_t *p;
114
115	if (index <= 0)
116		return NULL;
117	LIST_FOREACH(p, &sc_term_list, link) {
118		if (--index <= 0)
119			return p;
120	}
121
122	return NULL;
123}
124