console/tty.c

   1 /*
   2  * Copyright 1999 - Joseph Pranevich
   3  *
   4  * This is the console driver for TTY-based consoles, i.e. consoles
   5  * without cursor placement, etc. It's also a pretty decent starting
   6  * point for other drivers.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 /* When creating new drivers, you need to assign all the functions that
  24    that driver supports into the driver struct. If it is a supplementary
  25    driver, it should make sure to perserve the old values. */
  26
  27 #include "config.h"
  28
  29 #include <stdio.h>
  30
  31 #include "console.h"
  32 #include "windef.h"
  33 void TTY_Start()
  34 {
  35    /* This should be the root driver so we can ignore anything
  36       already in the struct. */
  37
  38    driver.norefresh = FALSE;
  39
  40    driver.write = TTY_Write;
  41    driver.getKeystroke = TTY_GetKeystroke;
  42 }
  43
  44 void TTY_Write(char output, int fg, int bg, int attribute)
  45 {
  46    /* We can discard all extended information. */
  47    fprintf(driver.console_out, "%c", output);
  48 }
  49
  50 void TTY_GetKeystroke(char *scan, char *ch)
  51 {
  52    /* All we have are character input things, nothing for extended */
  53    /* This is just the TTY driver, after all. We'll cope. */
  54    *ch = fgetc(driver.console_in);
  55 }
  56
  57