scterm.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer as
   12  *    the first lines of this file unmodified.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include "opt_syscons.h"
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/consio.h>
   39 
   40 #include <dev/syscons/syscons.h>
   41 
   42 SET_DECLARE(scterm_set, sc_term_sw_t);
   43 
   44 /* exported subroutines */
   45 
   46 void
   47 sc_move_cursor(scr_stat *scp, int x, int y)
   48 {
   49         if (x < 0)
   50                 x = 0;
   51         if (y < 0)
   52                 y = 0;
   53         if (x >= scp->xsize)
   54                 x = scp->xsize - 1;
   55         if (y >= scp->ysize)
   56                 y = scp->ysize - 1;
   57         scp->xpos = x;
   58         scp->ypos = y;
   59         scp->cursor_pos = scp->ypos*scp->xsize + scp->xpos;
   60 }
   61 
   62 void
   63 sc_clear_screen(scr_stat *scp)
   64 {
   65         (*scp->tsw->te_clear)(scp);
   66         scp->cursor_oldpos = scp->cursor_pos;
   67         sc_remove_cutmarking(scp);
   68 }
   69 
   70 /* terminal emulator manager routines */
   71 
   72 static LIST_HEAD(, sc_term_sw) sc_term_list = 
   73         LIST_HEAD_INITIALIZER(sc_term_list);
   74 
   75 int
   76 sc_term_add(sc_term_sw_t *sw)
   77 {
   78         LIST_INSERT_HEAD(&sc_term_list, sw, link);
   79         return 0;
   80 }
   81 
   82 int
   83 sc_term_remove(sc_term_sw_t *sw)
   84 {
   85         LIST_REMOVE(sw, link);
   86         return 0;
   87 }
   88 
   89 sc_term_sw_t
   90 *sc_term_match(char *name)
   91 {
   92         sc_term_sw_t **list;
   93         sc_term_sw_t *p;
   94 
   95         if (!LIST_EMPTY(&sc_term_list)) {
   96                 LIST_FOREACH(p, &sc_term_list, link) {
   97                         if ((strcmp(name, p->te_name) == 0)
   98                             || (strcmp(name, "*") == 0)) {
   99                                 return p;
  100                         }
  101                 }
  102         } else {
  103                 SET_FOREACH(list, scterm_set) {
  104                         p = *list;
  105                         if ((strcmp(name, p->te_name) == 0)
  106                             || (strcmp(name, "*") == 0)) {
  107                                 return p;
  108                         }
  109                 }
  110         }
  111 
  112         return NULL;
  113 }
  114 
  115 sc_term_sw_t
  116 *sc_term_match_by_number(int index)
  117 {
  118         sc_term_sw_t *p;
  119 
  120         if (index <= 0)
  121                 return NULL;
  122         LIST_FOREACH(p, &sc_term_list, link) {
  123                 if (--index <= 0)
  124                         return p;
  125         }
  126 
  127         return NULL;
  128 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/syscons/scterm.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/syscons/scterm.c