scterm.c

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    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: releng/5.0/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 
   39 SET_DECLARE(scterm_set, sc_term_sw_t);
   40 
   41 /* exported subroutines */
   42 
   43 void
   44 sc_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 
   59 void
   60 sc_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 
   69 static LIST_HEAD(, sc_term_sw) sc_term_list = 
   70         LIST_HEAD_INITIALIZER(sc_term_list);
   71 
   72 int
   73 sc_term_add(sc_term_sw_t *sw)
   74 {
   75         LIST_INSERT_HEAD(&sc_term_list, sw, link);
   76         return 0;
   77 }
   78 
   79 int
   80 sc_term_remove(sc_term_sw_t *sw)
   81 {
   82         LIST_REMOVE(sw, link);
   83         return 0;
   84 }
   85 
   86 sc_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 
  112 sc_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 }

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

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