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1241 lines
28 KiB
C
1241 lines
28 KiB
C
/* MS-DOS specific C utilities.
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Copyright (C) 1993, 1994 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Contributed by Morten Welinder */
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/* Note: some of the stuff here was taken from end of sysdep.c in demacs. */
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#include <config.h>
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#ifdef MSDOS
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#include "lisp.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <dos.h>
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#include "dosfns.h"
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#include "msdos.h"
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#include "systime.h"
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#include "termhooks.h"
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#include "frame.h"
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#include <go32.h>
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#include <pc.h>
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#include <ctype.h>
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/* #include <process.h> */
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/* Damn that local process.h! Instead we can define P_WAIT ourselves. */
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#define P_WAIT 1
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static int break_stat; /* BREAK check mode status. */
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static int stdin_stat; /* stdin IOCTL status. */
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static int extended_kbd; /* 101 (102) keyboard present. */
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int have_mouse; /* Mouse present? */
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static int mouse_last_x;
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static int mouse_last_y;
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/* Turn off Dos' Ctrl-C checking and inhibit interpretation of control chars
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by Dos. Determine the keyboard type. */
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int
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dos_ttraw ()
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{
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union REGS inregs, outregs;
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inregs.h.ah = 0xc0;
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int86 (0x15, &inregs, &outregs);
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extended_kbd = (!outregs.x.cflag) && (outregs.h.ah == 0);
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break_stat = getcbrk ();
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setcbrk (0);
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install_ctrl_break_check ();
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have_mouse = mouse_init1 ();
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inregs.x.ax = 0x4400; /* Get IOCTL status. */
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inregs.x.bx = 0x00; /* 0 = stdin. */
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intdos (&inregs, &outregs);
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stdin_stat = outregs.h.dl;
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inregs.x.dx = (outregs.x.dx | 0x0020) & 0x0027; /* raw mode */
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inregs.h.al = 0x01;
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intdos (&inregs, &outregs);
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return !outregs.x.cflag;
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}
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/* Restore status of standard input and Ctrl-C checking. */
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int
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dos_ttcooked ()
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{
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union REGS inregs, outregs;
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setcbrk (break_stat);
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if (have_mouse) mouse_off ();
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inregs.x.ax = 0x4401; /* Set IOCTL status. */
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inregs.x.bx = 0x00; /* 0 = stdin. */
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inregs.x.dx = stdin_stat;
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intdos (&inregs, &outregs);
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return !outregs.x.cflag;
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}
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static unsigned short
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ibmpc_translate_map[] =
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{
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/* --------------- 00 to 0f --------------- */
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0, /* Ctrl Break */
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0xff1b, /* Escape */
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0xffb1, /* Keypad 1 */
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0xffb2, /* Keypad 2 */
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0xffb3, /* Keypad 3 */
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0xffb4, /* Keypad 4 */
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0xffb5, /* Keypad 5 */
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0xffb6, /* Keypad 6 */
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0xffb7, /* Keypad 7 */
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0xffb8, /* Keypad 8 */
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0xffb9, /* Keypad 9 */
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0xffb0, /* Keypad 0 */
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'-', '=',
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0xff08, /* Backspace */
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0xff74, /* (Shift) Tab [Tab doesn't use this table] */
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/* --------------- 10 to 1f --------------- */
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'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']',
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0xff8d, /* Keypad Enter */
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0, /* Ctrl */
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'a', 's',
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/* --------------- 20 to 2f --------------- */
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'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`',
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0, /* Left shift */
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'\\', 'z', 'x', 'c', 'v',
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/* --------------- 30 to 3f --------------- */
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'b', 'n', 'm', ',', '.',
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0xffaf, /* Grey / */
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0, /* Right shift */
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0xffaa, /* Grey * */
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0, /* Alt */
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' ',
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0, /* Caps Lock */
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0xffbe, /* F1 */
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0xffbf, /* F2 */
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0xffc0, /* F3 */
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0xffc1, /* F4 */
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0xffc2, /* F5 */
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/* --------------- 40 to 4f --------------- */
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0xffc3, /* F6 */
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0xffc4, /* F7 */
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0xffc5, /* F8 */
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0xffc6, /* F9 */
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0xffc7, /* F10 */
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0, /* Num Lock */
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0, /* Scroll Lock */
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0xff50, /* Home */
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0xff52, /* Up */
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0xff55, /* Page Up */
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0xffad, /* Grey - */
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0xff51, /* Left */
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0xffb5, /* Keypad 5 */
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0xff53, /* Right */
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0xffab, /* Grey + */
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0xff57, /* End */
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/* --------------- 50 to 5f --------------- */
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0xff54, /* Down */
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0xff56, /* Page Down */
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0xff63, /* Insert */
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0xffff, /* Delete */
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0xffbe, /* (Shift) F1 */
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0xffbf, /* (Shift) F2 */
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0xffc0, /* (Shift) F3 */
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0xffc1, /* (Shift) F4 */
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0xffc2, /* (Shift) F5 */
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0xffc3, /* (Shift) F6 */
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0xffc4, /* (Shift) F7 */
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0xffc5, /* (Shift) F8 */
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0xffc6, /* (Shift) F9 */
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0xffc7, /* (Shift) F10 */
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0xffbe, /* (Ctrl) F1 */
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0xffbf, /* (Ctrl) F2 */
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/* --------------- 60 to 6f --------------- */
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0xffc0, /* (Ctrl) F3 */
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0xffc1, /* (Ctrl) F4 */
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0xffc2, /* (Ctrl) F5 */
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0xffc3, /* (Ctrl) F6 */
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0xffc4, /* (Ctrl) F7 */
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0xffc5, /* (Ctrl) F8 */
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0xffc6, /* (Ctrl) F9 */
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0xffc7, /* (Ctrl) F10 */
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0xffbe, /* (Alt) F1 */
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0xffbf, /* (Alt) F2 */
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0xffc0, /* (Alt) F3 */
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0xffc1, /* (Alt) F4 */
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0xffc2, /* (Alt) F5 */
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0xffc3, /* (Alt) F6 */
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0xffc4, /* (Alt) F7 */
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0xffc5, /* (Alt) F8 */
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/* --------------- 70 to 7f --------------- */
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0xffc6, /* (Alt) F9 */
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0xffc7, /* (Alt) F10 */
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0xff6d, /* (Ctrl) Sys Rq */
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0xff51, /* (Ctrl) Left */
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0xff53, /* (Ctrl) Right */
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0xff57, /* (Ctrl) End */
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0xff56, /* (Ctrl) Page Down */
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0xff50, /* (Ctrl) Home */
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'1', '2', '3', '4', '5', '6', '7', '8', /* (Alt) */
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/* --------------- 80 to 8f --------------- */
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'9', '0', '-', '=', /* (Alt) */
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0xff55, /* (Ctrl) Page Up */
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0xffc8, /* F11 */
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0xffc9, /* F12 */
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0xffc8, /* (Shift) F11 */
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0xffc9, /* (Shift) F12 */
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0xffc8, /* (Ctrl) F11 */
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0xffc9, /* (Ctrl) F12 */
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0xffc8, /* (Alt) F11 */
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0xffc9, /* (Alt) F12 */
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0xff52, /* (Ctrl) Up */
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0xffae, /* (Ctrl) Grey - */
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0xffb5, /* (Ctrl) Keypad 5 */
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/* --------------- 90 to 9f --------------- */
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0xffab, /* (Ctrl) Grey + */
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0xff54, /* (Ctrl) Down */
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0xff63, /* (Ctrl) Insert */
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0xffff, /* (Ctrl) Delete */
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0xff09, /* (Ctrl) Tab */
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0xffaf, /* (Ctrl) Grey / */
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0xffaa, /* (Ctrl) Grey * */
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0xff50, /* (Alt) Home */
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0xff52, /* (Alt) Up */
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0xff55, /* (Alt) Page Up */
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0, /* NO KEY */
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0xff51, /* (Alt) Left */
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0, /* NO KEY */
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0xff53, /* (Alt) Right */
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0, /* NO KEY */
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0xff57, /* (Alt) End */
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/* --------------- a0 to af --------------- */
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0xff54, /* (Alt) Down */
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0xff56, /* (Alt) Page Down */
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0xff63, /* (Alt) Insert */
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0xffff, /* (Alt) Delete */
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0xffaf, /* (Alt) Grey / */
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0xff09, /* (Alt) Tab */
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0xff0d /* (Alt) Enter */
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};
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/* Get a char from keyboard. Function keys are put into the event queue. */
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static int
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dos_rawgetc ()
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{
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struct input_event event;
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struct timeval tv;
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union REGS regs;
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int ctrl_p, alt_p, shift_p;
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/* Calculate modifier bits */
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regs.h.ah = extended_kbd ? 0x12 : 0x02;
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int86 (0x16, ®s, ®s);
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ctrl_p = ((regs.h.al & 4) != 0);
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shift_p = ((regs.h.al & 3) != 0);
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/* Please be very careful here not to break international keyboard support.
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When Keyb.Com is loaded, the key marked `Alt Gr' is used for accessing
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characters like { and } if their positions are overlaid. */
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alt_p = ((extended_kbd ? (regs.h.ah & 2) : (regs.h.al & 8)) != 0);
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/* The following condition is equivalent to `kbhit ()', except that
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it uses the bios to do its job. This pleases DESQview/X. */
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while ((regs.h.ah = extended_kbd ? 0x11 : 0x01),
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int86 (0x16, ®s, ®s),
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(regs.x.flags & 0x40) == 0)
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{
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union REGS regs;
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register unsigned char c;
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int sc, code;
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regs.h.ah = extended_kbd ? 0x10 : 0x00;
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int86 (0x16, ®s, ®s);
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c = regs.h.al;
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sc = regs.h.ah;
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/* Determine from the scan code if a keypad key was pressed. */
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if (c >= '0' && c <= '9' && sc > 0xb)
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sc = (c == '0') ? 0xb : (c - '0' + 1), c = 0;
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else if (sc == 0x53 && c != 0xe0)
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{
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code = 0xffae; /* Keypad decimal point/comma. */
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goto nonascii;
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}
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else if (sc == 0xe0)
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{
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switch (c)
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{
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case 10: /* Ctrl Enter */
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case 13:
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sc = 0x1c;
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break;
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case '/':
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sc = 0x35;
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break;
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default:
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sc = 0;
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};
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c = 0;
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}
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if (c == 0
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|| c == ' '
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|| alt_p
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|| (ctrl_p && shift_p)
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|| (c == 0xe0 && sc != 0) /* Pseudo-key */
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|| sc == 0x37 /* Grey * */
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|| sc == 0x4a /* Grey - */
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|| sc == 0x4e /* Grey + */
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|| sc == 0x0e) /* Back space *key*, not Ctrl-h */
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{
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if (sc >= (sizeof (ibmpc_translate_map) / sizeof (short)))
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code = 0;
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else
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code = ibmpc_translate_map[sc];
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if (code != 0)
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{
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if (code >= 0x100)
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{
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nonascii:
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event.kind = non_ascii_keystroke;
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event.code = (code & 0xff) + 0xff00;
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}
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else
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{
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/* Don't return S- if we don't have to. `shifted' is
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supposed to be the shifted versions of the characters
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in `unshifted'. Unfortunately, this is only true for
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US keyboard layout. If anyone knows how to do this
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right, please tell us. */
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static char *unshifted
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= "abcdefghijklmnopqrstuvwxyz,./=;[\\]'-`0123456789";
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static char *shifted
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= "ABCDEFGHIJKLMNOPQRSTUVWXYZ<>?+:{|}\"_~)!@#$%^&*(";
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char *pos;
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if (shift_p && (pos = strchr (unshifted, code)))
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{
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c = shifted[pos - unshifted];
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shift_p = 0;
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}
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else
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if (c == 0) c = code;
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event.kind = ascii_keystroke;
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event.code = c;
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}
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event.modifiers
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= (shift_p ? shift_modifier : 0)
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+ (ctrl_p ? ctrl_modifier : 0)
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+ (alt_p ? meta_modifier : 0);
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/* EMACS == Enter Meta Alt Control Shift */
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event.frame_or_window = selected_frame;
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gettimeofday (&tv, NULL);
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event.timestamp = tv.tv_usec;
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kbd_buffer_store_event (&event);
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}
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} else
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return c;
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}
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if (have_mouse)
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{
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int but, press, x, y, ok;
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/* Check for mouse movement *before* buttons. */
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mouse_check_moved ();
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for (but = 0; but < NUM_MOUSE_BUTTONS; but++)
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for (press = 0; press < 2; press++)
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{
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if (press)
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ok = mouse_pressed (but, &x, &y);
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||
else
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ok = mouse_released (but, &x, &y);
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if (ok)
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{
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event.kind = mouse_click;
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event.code = but;
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||
event.modifiers
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= (shift_p ? shift_modifier : 0)
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+ (ctrl_p ? ctrl_modifier : 0)
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+ (alt_p ? meta_modifier : 0)
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+ (press ? down_modifier : up_modifier);
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event.x = x;
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||
event.y = y;
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event.frame_or_window = selected_frame;
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||
gettimeofday (&tv, NULL);
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event.timestamp = tv.tv_usec;
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kbd_buffer_store_event (&event);
|
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}
|
||
}
|
||
}
|
||
|
||
return -1;
|
||
}
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||
|
||
static int prev_get_char = -1;
|
||
|
||
/* Return 1 if a key is ready to be read without suspending execution. */
|
||
dos_keysns ()
|
||
{
|
||
if (prev_get_char != -1)
|
||
return 1;
|
||
else
|
||
return ((prev_get_char = dos_rawgetc ()) != -1);
|
||
}
|
||
|
||
/* Read a key. Return -1 if no key is ready. */
|
||
dos_keyread ()
|
||
{
|
||
if (prev_get_char != -1)
|
||
{
|
||
int c = prev_get_char;
|
||
prev_get_char = -1;
|
||
return c;
|
||
}
|
||
else
|
||
return dos_rawgetc ();
|
||
}
|
||
|
||
/* Hostnames for a pc are not really funny, but they are used in change log
|
||
so we emulate the best we can. */
|
||
gethostname (p, size)
|
||
char *p;
|
||
int size;
|
||
{
|
||
char *q = egetenv ("HOSTNAME");
|
||
|
||
if (!q) q = "pc";
|
||
strcpy (p, q);
|
||
return 0;
|
||
}
|
||
|
||
/* Destructively turn backslashes into slashes. */
|
||
void
|
||
dostounix_filename (p)
|
||
register char *p;
|
||
{
|
||
while (*p)
|
||
{
|
||
if (*p == '\\')
|
||
*p = '/';
|
||
p++;
|
||
}
|
||
}
|
||
|
||
/* Destructively turn slashes into backslashes. */
|
||
void
|
||
unixtodos_filename (p)
|
||
register char *p;
|
||
{
|
||
while (*p)
|
||
{
|
||
if (*p == '/')
|
||
*p = '\\';
|
||
p++;
|
||
}
|
||
}
|
||
|
||
/* Get the default directory for a given drive. 0=def, 1=A, 2=B, ... */
|
||
int
|
||
getdefdir (drive, dst)
|
||
int drive;
|
||
char *dst;
|
||
{
|
||
union REGS regs;
|
||
|
||
*dst++ = '/';
|
||
regs.h.dl = drive;
|
||
regs.x.si = (int) dst;
|
||
regs.h.ah = 0x47;
|
||
intdos (®s, ®s);
|
||
return !regs.x.cflag;
|
||
}
|
||
|
||
/* Remove all CR's that are followed by a LF. */
|
||
int
|
||
crlf_to_lf (n, buf)
|
||
register int n;
|
||
register unsigned char *buf;
|
||
{
|
||
unsigned char *np = buf;
|
||
unsigned char *startp = buf;
|
||
unsigned char *endp = buf + n;
|
||
unsigned char c;
|
||
|
||
if (n == 0)
|
||
return n;
|
||
while (buf < endp - 1)
|
||
{
|
||
if (*buf == 0x0d)
|
||
{
|
||
if (*(++buf) != 0x0a)
|
||
*np++ = 0x0d;
|
||
}
|
||
else
|
||
*np++ = *buf++;
|
||
}
|
||
if (buf < endp)
|
||
*np++ = *buf++;
|
||
return np - startp;
|
||
}
|
||
|
||
|
||
/* Run command as specified by ARGV in directory DIR.
|
||
The command is run with input from TEMPIN and output to file TEMPOUT. */
|
||
int
|
||
run_msdos_command (argv, dir, tempin, tempout)
|
||
unsigned char **argv;
|
||
Lisp_Object dir;
|
||
int tempin, tempout;
|
||
{
|
||
char *saveargv1, *saveargv2, **envv;
|
||
char oldwd[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
|
||
int msshell, result = -1;
|
||
int in, out, inbak, outbak, errbak;
|
||
Lisp_Object cmd;
|
||
|
||
/* Get current directory as MSDOS cwd is not per-process. */
|
||
getwd (oldwd);
|
||
|
||
cmd = Ffile_name_nondirectory (build_string (argv[0]));
|
||
msshell = !NILP (Fmember (cmd, Fsymbol_value (intern ("msdos-shells"))))
|
||
&& !strcmp ("-c", argv[1]);
|
||
if (msshell)
|
||
{
|
||
saveargv1 = argv[1];
|
||
saveargv2 = argv[2];
|
||
argv[1] = "/c";
|
||
if (argv[2])
|
||
{
|
||
char *p = alloca (strlen (argv[2]) + 1);
|
||
|
||
strcpy (argv[2] = p, saveargv2);
|
||
while (*p && isspace (*p))
|
||
p++;
|
||
while (*p && !isspace (*p))
|
||
if (*p == '/')
|
||
*p++ = '\\';
|
||
else
|
||
p++;
|
||
}
|
||
}
|
||
|
||
/* Build the environment array. */
|
||
{
|
||
extern Lisp_Object Vprocess_environment;
|
||
Lisp_Object tmp, lst;
|
||
int i, len;
|
||
|
||
lst = Vprocess_environment;
|
||
len = XFASTINT (Flength (lst));
|
||
|
||
envv = alloca ((len + 1) * sizeof (char *));
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
tmp = Fcar (lst);
|
||
lst = Fcdr (lst);
|
||
CHECK_STRING (tmp, 0);
|
||
envv[i] = alloca (XSTRING (tmp)->size + 1);
|
||
strcpy (envv[i], XSTRING (tmp)->data);
|
||
}
|
||
envv[len] = (char *) 0;
|
||
}
|
||
|
||
if (XTYPE (dir) == Lisp_String)
|
||
chdir (XSTRING (dir)->data);
|
||
inbak = dup (0);
|
||
outbak = dup (1);
|
||
errbak = dup (2);
|
||
if (inbak < 0 || outbak < 0 || errbak < 0)
|
||
goto done; /* Allocation might fail due to lack of descriptors. */
|
||
dup2 (tempin, 0);
|
||
dup2 (tempout, 1);
|
||
dup2 (tempout, 2);
|
||
dos_ttcooked ();
|
||
result = spawnve (P_WAIT, argv[0], argv, envv);
|
||
dos_ttraw ();
|
||
dup2 (inbak, 0);
|
||
dup2 (outbak, 1);
|
||
dup2 (errbak, 2);
|
||
|
||
done:
|
||
chdir (oldwd);
|
||
if (msshell)
|
||
{
|
||
argv[1] = saveargv1;
|
||
argv[2] = saveargv2;
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
croak (badfunc)
|
||
char *badfunc;
|
||
{
|
||
fprintf (stderr, "%s not yet implemented\r\n", badfunc);
|
||
reset_sys_modes ();
|
||
exit (1);
|
||
}
|
||
|
||
/* A list of unimplemented functions that we silently ignore. */
|
||
unsigned alarm (s) unsigned s; {}
|
||
fork () { return 0; }
|
||
int kill (x, y) int x, y; { return -1; }
|
||
nice (p) int p; {}
|
||
void volatile pause () {}
|
||
request_sigio () {}
|
||
setpgrp () {return 0; }
|
||
setpriority (x,y,z) int x,y,z; { return 0; }
|
||
sigsetmask (x) int x; { return 0; }
|
||
unrequest_sigio () {}
|
||
|
||
#ifdef chdir
|
||
#undef chdir
|
||
#endif
|
||
|
||
int
|
||
sys_chdir (path)
|
||
const char* path;
|
||
{
|
||
int len = strlen (path);
|
||
char *tmp = (char *) alloca (len + 1);
|
||
/* Gotta do this extern here due to the corresponding #define: */
|
||
extern int chdir ();
|
||
|
||
if (*path && path[1] == ':' && (getdisk () != tolower (path[0]) - 'a'))
|
||
setdisk (tolower (path[0]) - 'a');
|
||
|
||
strcpy (tmp, path);
|
||
if (strcmp (path, "/") && strcmp (path + 1, ":/") && (path[len - 1] == '/'))
|
||
tmp[len - 1] = 0;
|
||
return chdir (tmp);
|
||
}
|
||
|
||
/* Sleep SECS. If KBDOK also return immediately if a key is pressed. */
|
||
void
|
||
sleep_or_kbd_hit (secs, kbdok)
|
||
int secs, kbdok;
|
||
{
|
||
long clnow, clthen;
|
||
struct timeval t;
|
||
|
||
gettimeofday (&t, NULL);
|
||
clnow = t.tv_sec * 100 + t.tv_usec / 10000;
|
||
clthen = clnow + (100 * secs);
|
||
|
||
do
|
||
{
|
||
gettimeofday (&t, NULL);
|
||
clnow = t.tv_sec * 100 + t.tv_usec / 10000;
|
||
if (kbdok && detect_input_pending ())
|
||
return;
|
||
}
|
||
while (clnow < clthen);
|
||
}
|
||
|
||
/* The Emacs root directory as determined by init_environment. */
|
||
static char emacsroot[MAXPATHLEN];
|
||
|
||
char *
|
||
rootrelativepath (rel)
|
||
char *rel;
|
||
{
|
||
static char result[MAXPATHLEN + 10];
|
||
|
||
strcpy (result, emacsroot);
|
||
strcat (result, "/");
|
||
strcat (result, rel);
|
||
return result;
|
||
}
|
||
|
||
/* Define a lot of environment variables if not already defined. Don't
|
||
remove anything unless you know what you're doing -- lots of code will
|
||
break if one or more of these are missing. */
|
||
void
|
||
init_environment (argc, argv, skip_args)
|
||
int argc;
|
||
char **argv;
|
||
int skip_args;
|
||
{
|
||
char *s, *t, *root;
|
||
int len;
|
||
|
||
/* Find our root from argv[0]. Assuming argv[0] is, say,
|
||
"c:/emacs/bin/emacs.exe" our root will be "c:/emacs". */
|
||
len = strlen (argv[0]);
|
||
root = alloca (len + 10); /* A little extra space for the stuff below. */
|
||
strcpy (root, argv[0]);
|
||
while (len > 0 && root[len] != '/' && root[len] != ':')
|
||
len--;
|
||
root[len] = '\0';
|
||
if (len > 4 && strcmp (root + len - 4, "/bin") == 0)
|
||
root[len - 4] = '\0';
|
||
else
|
||
strcpy (root, "c:/emacs"); /* Only under debuggers, I think. */
|
||
len = strlen (root);
|
||
strcpy (emacsroot, root);
|
||
|
||
/* We default HOME to our root. */
|
||
setenv ("HOME", root, 0);
|
||
|
||
/* We default EMACSPATH to root + "/bin". */
|
||
strcpy (root + len, "/bin");
|
||
setenv ("EMACSPATH", root, 0);
|
||
|
||
/* I don't expect anybody to ever use other terminals so the internal
|
||
terminal is the default. */
|
||
setenv ("TERM", "internal", 0);
|
||
|
||
/* SHELL is a bit tricky -- COMSPEC is the closest we come, but we must
|
||
downcase it and mirror the backslashes. */
|
||
s = getenv ("COMSPEC");
|
||
if (!s) s = "c:/command.com";
|
||
t = alloca (strlen (s) + 1);
|
||
strcpy (t, s);
|
||
strlwr (t);
|
||
dostounix_filename (t);
|
||
setenv ("SHELL", t, 0);
|
||
|
||
/* PATH is also downcased and backslashes mirrored. */
|
||
s = getenv ("PATH");
|
||
if (!s) s = "";
|
||
t = alloca (strlen (s) + 3);
|
||
/* Current directory is always considered part of MsDos's path but it is
|
||
not normally mentioned. Now it is. */
|
||
strcat (strcpy (t, ".;"), s);
|
||
strlwr (t);
|
||
dostounix_filename (t); /* Not a single file name, but this should work. */
|
||
setenv ("PATH", t, 1);
|
||
|
||
/* In some sense all dos users have root privileges, so... */
|
||
setenv ("USER", "root", 0);
|
||
setenv ("NAME", getenv ("USER"), 0);
|
||
|
||
/* Time zone determined from country code. To make this possible, the
|
||
country code may not span more than one time zone. In other words,
|
||
in the USA, you lose. */
|
||
switch (dos_country_code)
|
||
{
|
||
case 31: /* Belgium */
|
||
case 32: /* The Netherlands */
|
||
case 33: /* France */
|
||
case 34: /* Spain */
|
||
case 36: /* Hungary */
|
||
case 38: /* Yugoslavia (or what's left of it?) */
|
||
case 39: /* Italy */
|
||
case 41: /* Switzerland */
|
||
case 42: /* Tjekia */
|
||
case 45: /* Denmark */
|
||
case 46: /* Sweden */
|
||
case 47: /* Norway */
|
||
case 48: /* Poland */
|
||
case 49: /* Germany */
|
||
/* Daylight saving from last Sunday in March to last Sunday in
|
||
September, both at 2AM. */
|
||
setenv ("TZ", "MET-01METDST-02,M3.5.0/02:00,M9.5.0/02:00", 0);
|
||
break;
|
||
case 44: /* United Kingdom */
|
||
case 351: /* Portugal */
|
||
case 354: /* Iceland */
|
||
setenv ("TZ", "GMT+00", 0);
|
||
break;
|
||
case 81: /* Japan */
|
||
case 82: /* Korea */
|
||
setenv ("TZ", "???-09", 0);
|
||
break;
|
||
case 90: /* Turkey */
|
||
case 358: /* Finland */
|
||
case 972: /* Israel */
|
||
setenv ("TZ", "EET-02", 0);
|
||
break;
|
||
}
|
||
tzset ();
|
||
init_gettimeofday ();
|
||
}
|
||
|
||
/* Flash the screen as a substitute for BEEPs. */
|
||
|
||
static void
|
||
do_visible_bell (xorattr)
|
||
unsigned char xorattr;
|
||
{
|
||
asm volatile
|
||
(" movb $1,%%dl
|
||
visible_bell_0:
|
||
movl _ScreenPrimary,%%eax
|
||
call dosmemsetup
|
||
movl %%eax,%%ebx
|
||
movl %1,%%ecx
|
||
movb %0,%%al
|
||
incl %%ebx
|
||
visible_bell_1:
|
||
xorb %%al,%%gs:(%%ebx)
|
||
addl $2,%%ebx
|
||
decl %%ecx
|
||
jne visible_bell_1
|
||
decb %%dl
|
||
jne visible_bell_3
|
||
visible_bell_2:
|
||
movzwl %%ax,%%eax
|
||
movzwl %%ax,%%eax
|
||
movzwl %%ax,%%eax
|
||
movzwl %%ax,%%eax
|
||
decw %%cx
|
||
jne visible_bell_2
|
||
jmp visible_bell_0
|
||
visible_bell_3:"
|
||
: /* no output */
|
||
: "m" (xorattr), "g" (ScreenCols () * ScreenRows ())
|
||
: "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx");
|
||
}
|
||
|
||
/* At screen position (X,Y), output C characters from string S with
|
||
attribute A. Do it fast! */
|
||
|
||
static void
|
||
output_string (x, y, s, c, a)
|
||
int x, y, c;
|
||
unsigned char *s;
|
||
unsigned char a;
|
||
{
|
||
char *t = (char *)ScreenPrimary + 2 * (x + ScreenCols () * y);
|
||
asm volatile
|
||
(" movl %1,%%eax
|
||
call dosmemsetup
|
||
movl %%eax,%%edi
|
||
movb %0,%%ah
|
||
movl %2,%%ecx
|
||
movl %3,%%esi
|
||
output_string1:
|
||
movb (%%esi),%%al
|
||
movw %%ax,%%gs:(%%edi)
|
||
addl $2,%%edi
|
||
incl %%esi
|
||
decl %%ecx
|
||
jne output_string1"
|
||
: /* no output */
|
||
: "m" (a), "g" (t), "g" (c), "g" (s)
|
||
: "%eax", "%ecx", /* "%gs",*/ "%esi", "%edi");
|
||
}
|
||
|
||
static int internal_terminal = 0;
|
||
#undef fflush
|
||
|
||
int
|
||
internal_flush (f)
|
||
FILE *f;
|
||
{
|
||
static char spaces[] = " ";
|
||
static int x;
|
||
static int y;
|
||
unsigned char *cp, *cp0;
|
||
int count, i, j;
|
||
|
||
if (internal_terminal && f == stdout)
|
||
{
|
||
if (have_mouse) mouse_off ();
|
||
cp = stdout->_base;
|
||
count = stdout->_ptr - stdout->_base;
|
||
while (count > 0)
|
||
{
|
||
switch (*cp++)
|
||
{
|
||
case 27:
|
||
switch (*cp++)
|
||
{
|
||
case '@':
|
||
y = *cp++;
|
||
x = *cp++;
|
||
count -= 4;
|
||
break;
|
||
case 'A':
|
||
ScreenAttrib = *cp++;
|
||
count -= 3;
|
||
break;
|
||
case 'B':
|
||
do_visible_bell (*cp++);
|
||
count -= 3;
|
||
break;
|
||
case 'C':
|
||
ScreenClear ();
|
||
x = y = 0;
|
||
count -= 2;
|
||
break;
|
||
case 'E':
|
||
i = ScreenCols () - x;
|
||
j = x;
|
||
while (i >= sizeof spaces)
|
||
{
|
||
output_string (j, y, spaces, sizeof spaces,
|
||
ScreenAttrib);
|
||
j += sizeof spaces;
|
||
i -= sizeof spaces;
|
||
}
|
||
if (i > 0)
|
||
output_string (j, y, spaces, i, ScreenAttrib);
|
||
count -= 2;
|
||
break;
|
||
case 'R':
|
||
x++;
|
||
count -= 2;
|
||
break;
|
||
case 'U':
|
||
y--;
|
||
count -= 2;
|
||
break;
|
||
case 'X':
|
||
ScreenAttrib ^= *cp++;
|
||
count -= 3;
|
||
break;
|
||
default:
|
||
count -= 2;
|
||
}
|
||
break;
|
||
case 7:
|
||
write (1, "\007", 1);
|
||
count--;
|
||
break;
|
||
case 8:
|
||
x--;
|
||
count--;
|
||
break;
|
||
case 13:
|
||
x = 0;
|
||
count--;
|
||
break;
|
||
case 10:
|
||
y++;
|
||
count--;
|
||
break;
|
||
default:
|
||
cp0 = cp - 1;
|
||
count--;
|
||
while (count > 0 && *cp >= ' ')
|
||
cp++, count--;
|
||
output_string (x, y, cp0, cp - cp0, ScreenAttrib);
|
||
x += (cp - cp0);
|
||
}
|
||
}
|
||
fpurge (stdout);
|
||
ScreenSetCursor (y, x);
|
||
if (have_mouse) mouse_on ();
|
||
}
|
||
else
|
||
/* This is a call to the original fflush. */
|
||
fflush (f);
|
||
}
|
||
|
||
/* Do we need the internal terminal? */
|
||
void
|
||
internal_terminal_init ()
|
||
{
|
||
char *term = getenv ("TERM");
|
||
|
||
internal_terminal
|
||
= (!noninteractive) && term && !strcmp (term, "internal");
|
||
}
|
||
|
||
/* When time zones are set from Ms-Dos too may C-libraries are playing
|
||
tricks with time values. We solve this by defining our own version
|
||
of `gettimeofday' bypassing GO32. Our version needs to be initialized
|
||
once and after each call to `tzset' with TZ changed. */
|
||
|
||
static int daylight, gmtoffset;
|
||
|
||
int
|
||
gettimeofday (struct timeval *tp, struct timezone *tzp)
|
||
{
|
||
if (tp)
|
||
{
|
||
struct time t;
|
||
struct date d;
|
||
struct tm tmrec;
|
||
|
||
gettime (&t);
|
||
getdate (&d);
|
||
tmrec.tm_year = d.da_year - 1900;
|
||
tmrec.tm_mon = d.da_mon - 1;
|
||
tmrec.tm_mday = d.da_day;
|
||
tmrec.tm_hour = t.ti_hour;
|
||
tmrec.tm_min = t.ti_min;
|
||
tmrec.tm_sec = t.ti_sec;
|
||
tmrec.tm_gmtoff = gmtoffset;
|
||
tmrec.tm_isdst = daylight;
|
||
tp->tv_sec = mktime (&tmrec);
|
||
tp->tv_usec = t.ti_hund * (1000000 / 100);
|
||
}
|
||
if (tzp)
|
||
{
|
||
tzp->tz_minuteswest = gmtoffset;
|
||
tzp->tz_dsttime = daylight;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
init_gettimeofday ()
|
||
{
|
||
time_t ltm, gtm;
|
||
struct tm *lstm;
|
||
|
||
daylight = 0;
|
||
gmtoffset = 0;
|
||
ltm = gtm = time (NULL);
|
||
ltm = mktime (lstm = localtime (<m));
|
||
gtm = mktime (gmtime (>m));
|
||
daylight = lstm->tm_isdst;
|
||
gmtoffset = (int)(gtm - ltm) / 60;
|
||
}
|
||
|
||
/* These must be global. */
|
||
static _go32_dpmi_seginfo ctrl_break_vector;
|
||
static _go32_dpmi_registers ctrl_break_regs;
|
||
static int ctrlbreakinstalled = 0;
|
||
|
||
/* Interrupt level detection of Ctrl-Break. Don't do anything fancy here! */
|
||
void
|
||
ctrl_break_func (regs)
|
||
_go32_dpmi_registers *regs;
|
||
{
|
||
Vquit_flag = Qt;
|
||
}
|
||
|
||
void
|
||
install_ctrl_break_check ()
|
||
{
|
||
if (!ctrlbreakinstalled)
|
||
{
|
||
/* Don't press Ctrl-Break if you don't have either DPMI or Emacs
|
||
was compiler with Djgpp 1.11 maintenance level 5 or later! */
|
||
ctrlbreakinstalled = 1;
|
||
ctrl_break_vector.pm_offset = (int) ctrl_break_func;
|
||
_go32_dpmi_allocate_real_mode_callback_iret (&ctrl_break_vector,
|
||
&ctrl_break_regs);
|
||
_go32_dpmi_set_real_mode_interrupt_vector (0x1b, &ctrl_break_vector);
|
||
}
|
||
}
|
||
|
||
|
||
/* Mouse routines under devellopment follow. Coordinates are in screen
|
||
positions and zero based. Mouse buttons are numbered from left to
|
||
right and also zero based. */
|
||
|
||
static int mouse_button_translate[NUM_MOUSE_BUTTONS];
|
||
static int mouse_button_count;
|
||
|
||
void
|
||
mouse_init ()
|
||
{
|
||
union REGS regs;
|
||
|
||
regs.x.ax = 0x0007;
|
||
regs.x.cx = 0;
|
||
regs.x.dx = 8 * (ScreenCols () - 1);
|
||
int86 (0x33, ®s, ®s);
|
||
|
||
regs.x.ax = 0x0008;
|
||
regs.x.cx = 0;
|
||
regs.x.dx = 8 * (ScreenRows () - 1);
|
||
int86 (0x33, ®s, ®s);
|
||
|
||
mouse_moveto (ScreenCols () - 1, ScreenRows () - 1);
|
||
mouse_on ();
|
||
}
|
||
|
||
void
|
||
mouse_on ()
|
||
{
|
||
union REGS regs;
|
||
|
||
regs.x.ax = 0x0001;
|
||
int86 (0x33, ®s, ®s);
|
||
}
|
||
|
||
void
|
||
mouse_off ()
|
||
{
|
||
union REGS regs;
|
||
|
||
regs.x.ax = 0x0002;
|
||
int86 (0x33, ®s, ®s);
|
||
}
|
||
|
||
void
|
||
mouse_moveto (x, y)
|
||
int x, y;
|
||
{
|
||
union REGS regs;
|
||
|
||
regs.x.ax = 0x0004;
|
||
mouse_last_x = regs.x.cx = x * 8;
|
||
mouse_last_y = regs.x.dx = y * 8;
|
||
int86 (0x33, ®s, ®s);
|
||
}
|
||
|
||
int
|
||
mouse_pressed (b, xp, yp)
|
||
int b, *xp, *yp;
|
||
{
|
||
union REGS regs;
|
||
|
||
if (b >= mouse_button_count)
|
||
return 0;
|
||
regs.x.ax = 0x0005;
|
||
regs.x.bx = mouse_button_translate[b];
|
||
int86 (0x33, ®s, ®s);
|
||
if (regs.x.bx)
|
||
*xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
|
||
return (regs.x.bx != 0);
|
||
}
|
||
|
||
int
|
||
mouse_released (b, xp, yp)
|
||
int b, *xp, *yp;
|
||
{
|
||
union REGS regs;
|
||
|
||
if (b >= mouse_button_count)
|
||
return 0;
|
||
regs.x.ax = 0x0006;
|
||
regs.x.bx = mouse_button_translate[b];
|
||
int86 (0x33, ®s, ®s);
|
||
if (regs.x.bx)
|
||
*xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
|
||
return (regs.x.bx != 0);
|
||
}
|
||
|
||
void
|
||
mouse_get_pos (f, bar_window, part, x, y, time)
|
||
FRAME_PTR *f;
|
||
Lisp_Object *bar_window, *x, *y;
|
||
enum scroll_bar_part *part;
|
||
unsigned long *time;
|
||
{
|
||
union REGS regs;
|
||
struct timeval tv;
|
||
|
||
regs.x.ax = 0x0003;
|
||
int86 (0x33, ®s, ®s);
|
||
*f = selected_frame;
|
||
*bar_window = Qnil;
|
||
gettimeofday (&tv, NULL);
|
||
*x = make_number (regs.x.cx / 8);
|
||
*y = make_number (regs.x.dx / 8);
|
||
*time = tv.tv_usec;
|
||
mouse_moved = 0;
|
||
}
|
||
|
||
void
|
||
mouse_check_moved ()
|
||
{
|
||
union REGS regs;
|
||
|
||
regs.x.ax = 0x0003;
|
||
int86 (0x33, ®s, ®s);
|
||
if (regs.x.cx != mouse_last_x || regs.x.dx != mouse_last_y)
|
||
{
|
||
mouse_moved = 1;
|
||
mouse_last_x = regs.x.cx;
|
||
mouse_last_y = regs.x.dx;
|
||
}
|
||
}
|
||
|
||
int
|
||
mouse_init1 ()
|
||
{
|
||
union REGS regs;
|
||
int present;
|
||
|
||
if (!internal_terminal)
|
||
return 0;
|
||
|
||
regs.x.ax = 0x0021;
|
||
int86 (0x33, ®s, ®s);
|
||
present = (regs.x.ax & 0xffff) == 0xffff;
|
||
if (!present)
|
||
{
|
||
/* Reportedly, the above doesn't work for some mouse drivers. There
|
||
is an additional detection method that should work, but might be
|
||
a little slower. Use that as an alternative. */
|
||
regs.x.ax = 0x0000;
|
||
int86 (0x33, ®s, ®s);
|
||
present = (regs.x.ax & 0xffff) == 0xffff;
|
||
}
|
||
|
||
if (present)
|
||
{
|
||
if (regs.x.bx == 3)
|
||
{
|
||
mouse_button_count = 3;
|
||
mouse_button_translate[0] = 0; /* Left */
|
||
mouse_button_translate[1] = 2; /* Middle */
|
||
mouse_button_translate[2] = 1; /* Right */
|
||
}
|
||
else
|
||
{
|
||
mouse_button_count = 2;
|
||
mouse_button_translate[0] = 0;
|
||
mouse_button_translate[1] = 1;
|
||
}
|
||
mouse_position_hook = &mouse_get_pos;
|
||
mouse_init ();
|
||
}
|
||
return present;
|
||
}
|
||
|
||
/* See xterm.c for more info. */
|
||
void
|
||
pixel_to_glyph_coords (f, pix_x, pix_y, x, y, bounds, noclip)
|
||
FRAME_PTR f;
|
||
register int pix_x, pix_y;
|
||
register int *x, *y;
|
||
void /* XRectangle */ *bounds;
|
||
int noclip;
|
||
{
|
||
if (bounds) abort ();
|
||
|
||
/* Ignore clipping. */
|
||
|
||
*x = pix_x;
|
||
*y = pix_y;
|
||
}
|
||
|
||
void
|
||
glyph_to_pixel_coords (f, x, y, pix_x, pix_y)
|
||
FRAME_PTR f;
|
||
register int x, y;
|
||
register int *pix_x, *pix_y;
|
||
{
|
||
*pix_x = x;
|
||
*pix_y = y;
|
||
}
|
||
|
||
#endif /* MSDOS */
|