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/* MS-DOS specific C utilities.
Copyright (C) 1993, 1994 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Contributed by Morten Welinder */
/* Note: some of the stuff here was taken from end of sysdep.c in demacs. */
#include <config.h>
#ifdef MSDOS
#include "lisp.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/time.h>
#include <dos.h>
#include "dosfns.h"
#include "msdos.h"
#include "systime.h"
#include "termhooks.h"
#include "frame.h"
#include <go32.h>
#include <pc.h>
#include <ctype.h>
/* #include <process.h> */
/* Damn that local process.h! Instead we can define P_WAIT ourselves. */
#define P_WAIT 1
static int break_stat; /* BREAK check mode status. */
static int stdin_stat; /* stdin IOCTL status. */
static int extended_kbd; /* 101 (102) keyboard present. */
int have_mouse; /* Mouse present? */
static int mouse_last_x;
static int mouse_last_y;
/* Turn off Dos' Ctrl-C checking and inhibit interpretation of control chars
by Dos. Determine the keyboard type. */
int
dos_ttraw ()
{
union REGS inregs, outregs;
inregs.h.ah = 0xc0;
int86 (0x15, &inregs, &outregs);
extended_kbd = (!outregs.x.cflag) && (outregs.h.ah == 0);
break_stat = getcbrk ();
setcbrk (0);
install_ctrl_break_check ();
have_mouse = mouse_init1 ();
inregs.x.ax = 0x4400; /* Get IOCTL status. */
inregs.x.bx = 0x00; /* 0 = stdin. */
intdos (&inregs, &outregs);
stdin_stat = outregs.h.dl;
inregs.x.dx = (outregs.x.dx | 0x0020) & 0x0027; /* raw mode */
inregs.h.al = 0x01;
intdos (&inregs, &outregs);
return !outregs.x.cflag;
}
/* Restore status of standard input and Ctrl-C checking. */
int
dos_ttcooked ()
{
union REGS inregs, outregs;
setcbrk (break_stat);
if (have_mouse) mouse_off ();
inregs.x.ax = 0x4401; /* Set IOCTL status. */
inregs.x.bx = 0x00; /* 0 = stdin. */
inregs.x.dx = stdin_stat;
intdos (&inregs, &outregs);
return !outregs.x.cflag;
}
static unsigned short
ibmpc_translate_map[] =
{
/* --------------- 00 to 0f --------------- */
0, /* Ctrl Break */
0xff1b, /* Escape */
0xffb1, /* Keypad 1 */
0xffb2, /* Keypad 2 */
0xffb3, /* Keypad 3 */
0xffb4, /* Keypad 4 */
0xffb5, /* Keypad 5 */
0xffb6, /* Keypad 6 */
0xffb7, /* Keypad 7 */
0xffb8, /* Keypad 8 */
0xffb9, /* Keypad 9 */
0xffb0, /* Keypad 0 */
'-', '=',
0xff08, /* Backspace */
0xff74, /* (Shift) Tab [Tab doesn't use this table] */
/* --------------- 10 to 1f --------------- */
'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']',
0xff8d, /* Keypad Enter */
0, /* Ctrl */
'a', 's',
/* --------------- 20 to 2f --------------- */
'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`',
0, /* Left shift */
'\\', 'z', 'x', 'c', 'v',
/* --------------- 30 to 3f --------------- */
'b', 'n', 'm', ',', '.',
0xffaf, /* Grey / */
0, /* Right shift */
0xffaa, /* Grey * */
0, /* Alt */
' ',
0, /* Caps Lock */
0xffbe, /* F1 */
0xffbf, /* F2 */
0xffc0, /* F3 */
0xffc1, /* F4 */
0xffc2, /* F5 */
/* --------------- 40 to 4f --------------- */
0xffc3, /* F6 */
0xffc4, /* F7 */
0xffc5, /* F8 */
0xffc6, /* F9 */
0xffc7, /* F10 */
0, /* Num Lock */
0, /* Scroll Lock */
0xff50, /* Home */
0xff52, /* Up */
0xff55, /* Page Up */
0xffad, /* Grey - */
0xff51, /* Left */
0xffb5, /* Keypad 5 */
0xff53, /* Right */
0xffab, /* Grey + */
0xff57, /* End */
/* --------------- 50 to 5f --------------- */
0xff54, /* Down */
0xff56, /* Page Down */
0xff63, /* Insert */
0xffff, /* Delete */
0xffbe, /* (Shift) F1 */
0xffbf, /* (Shift) F2 */
0xffc0, /* (Shift) F3 */
0xffc1, /* (Shift) F4 */
0xffc2, /* (Shift) F5 */
0xffc3, /* (Shift) F6 */
0xffc4, /* (Shift) F7 */
0xffc5, /* (Shift) F8 */
0xffc6, /* (Shift) F9 */
0xffc7, /* (Shift) F10 */
0xffbe, /* (Ctrl) F1 */
0xffbf, /* (Ctrl) F2 */
/* --------------- 60 to 6f --------------- */
0xffc0, /* (Ctrl) F3 */
0xffc1, /* (Ctrl) F4 */
0xffc2, /* (Ctrl) F5 */
0xffc3, /* (Ctrl) F6 */
0xffc4, /* (Ctrl) F7 */
0xffc5, /* (Ctrl) F8 */
0xffc6, /* (Ctrl) F9 */
0xffc7, /* (Ctrl) F10 */
0xffbe, /* (Alt) F1 */
0xffbf, /* (Alt) F2 */
0xffc0, /* (Alt) F3 */
0xffc1, /* (Alt) F4 */
0xffc2, /* (Alt) F5 */
0xffc3, /* (Alt) F6 */
0xffc4, /* (Alt) F7 */
0xffc5, /* (Alt) F8 */
/* --------------- 70 to 7f --------------- */
0xffc6, /* (Alt) F9 */
0xffc7, /* (Alt) F10 */
0xff6d, /* (Ctrl) Sys Rq */
0xff51, /* (Ctrl) Left */
0xff53, /* (Ctrl) Right */
0xff57, /* (Ctrl) End */
0xff56, /* (Ctrl) Page Down */
0xff50, /* (Ctrl) Home */
'1', '2', '3', '4', '5', '6', '7', '8', /* (Alt) */
/* --------------- 80 to 8f --------------- */
'9', '0', '-', '=', /* (Alt) */
0xff55, /* (Ctrl) Page Up */
0xffc8, /* F11 */
0xffc9, /* F12 */
0xffc8, /* (Shift) F11 */
0xffc9, /* (Shift) F12 */
0xffc8, /* (Ctrl) F11 */
0xffc9, /* (Ctrl) F12 */
0xffc8, /* (Alt) F11 */
0xffc9, /* (Alt) F12 */
0xff52, /* (Ctrl) Up */
0xffae, /* (Ctrl) Grey - */
0xffb5, /* (Ctrl) Keypad 5 */
/* --------------- 90 to 9f --------------- */
0xffab, /* (Ctrl) Grey + */
0xff54, /* (Ctrl) Down */
0xff63, /* (Ctrl) Insert */
0xffff, /* (Ctrl) Delete */
0xff09, /* (Ctrl) Tab */
0xffaf, /* (Ctrl) Grey / */
0xffaa, /* (Ctrl) Grey * */
0xff50, /* (Alt) Home */
0xff52, /* (Alt) Up */
0xff55, /* (Alt) Page Up */
0, /* NO KEY */
0xff51, /* (Alt) Left */
0, /* NO KEY */
0xff53, /* (Alt) Right */
0, /* NO KEY */
0xff57, /* (Alt) End */
/* --------------- a0 to af --------------- */
0xff54, /* (Alt) Down */
0xff56, /* (Alt) Page Down */
0xff63, /* (Alt) Insert */
0xffff, /* (Alt) Delete */
0xffaf, /* (Alt) Grey / */
0xff09, /* (Alt) Tab */
0xff0d /* (Alt) Enter */
};
/* Get a char from keyboard. Function keys are put into the event queue. */
static int
dos_rawgetc ()
{
struct input_event event;
struct timeval tv;
union REGS regs;
int ctrl_p, alt_p, shift_p;
/* Calculate modifier bits */
regs.h.ah = extended_kbd ? 0x12 : 0x02;
int86 (0x16, ®s, ®s);
ctrl_p = ((regs.h.al & 4) != 0);
shift_p = ((regs.h.al & 3) != 0);
/* Please be very careful here not to break international keyboard support.
When Keyb.Com is loaded, the key marked `Alt Gr' is used for accessing
characters like { and } if their positions are overlaid. */
alt_p = ((extended_kbd ? (regs.h.ah & 2) : (regs.h.al & 8)) != 0);
/* The following condition is equivalent to `kbhit ()', except that
it uses the bios to do its job. This pleases DESQview/X. */
while ((regs.h.ah = extended_kbd ? 0x11 : 0x01),
int86 (0x16, ®s, ®s),
(regs.x.flags & 0x40) == 0)
{
union REGS regs;
register unsigned char c;
int sc, code;
regs.h.ah = extended_kbd ? 0x10 : 0x00;
int86 (0x16, ®s, ®s);
c = regs.h.al;
sc = regs.h.ah;
/* Determine from the scan code if a keypad key was pressed. */
if (c >= '0' && c <= '9' && sc > 0xb)
sc = (c == '0') ? 0xb : (c - '0' + 1), c = 0;
else if (sc == 0x53 && c != 0xe0)
{
code = 0xffae; /* Keypad decimal point/comma. */
goto nonascii;
}
else if (sc == 0xe0)
{
switch (c)
{
case 10: /* Ctrl Enter */
case 13:
sc = 0x1c;
break;
case '/':
sc = 0x35;
break;
default:
sc = 0;
};
c = 0;
}
if (c == 0
|| c == ' '
|| alt_p
|| (ctrl_p && shift_p)
|| (c == 0xe0 && sc != 0) /* Pseudo-key */
|| sc == 0x37 /* Grey * */
|| sc == 0x4a /* Grey - */
|| sc == 0x4e /* Grey + */
|| sc == 0x0e) /* Back space *key*, not Ctrl-h */
{
if (sc >= (sizeof (ibmpc_translate_map) / sizeof (short)))
code = 0;
else
code = ibmpc_translate_map[sc];
if (code != 0)
{
if (code >= 0x100)
{
nonascii:
event.kind = non_ascii_keystroke;
event.code = (code & 0xff) + 0xff00;
}
else
{
/* Don't return S- if we don't have to. `shifted' is
supposed to be the shifted versions of the characters
in `unshifted'. Unfortunately, this is only true for
US keyboard layout. If anyone knows how to do this
right, please tell us. */
static char *unshifted
= "abcdefghijklmnopqrstuvwxyz,./=;[\\]'-`0123456789";
static char *shifted
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ<>?+:{|}\"_~)!@#$%^&*(";
char *pos;
if (shift_p && (pos = strchr (unshifted, code)))
{
c = shifted[pos - unshifted];
shift_p = 0;
}
else
if (c == 0) c = code;
event.kind = ascii_keystroke;
event.code = c;
}
event.modifiers
= (shift_p ? shift_modifier : 0)
+ (ctrl_p ? ctrl_modifier : 0)
+ (alt_p ? meta_modifier : 0);
/* EMACS == Enter Meta Alt Control Shift */
event.frame_or_window = selected_frame;
gettimeofday (&tv, NULL);
event.timestamp = tv.tv_usec;
kbd_buffer_store_event (&event);
}
} else
return c;
}
if (have_mouse)
{
int but, press, x, y, ok;
/* Check for mouse movement *before* buttons. */
mouse_check_moved ();
for (but = 0; but < NUM_MOUSE_BUTTONS; but++)
for (press = 0; press < 2; press++)
{
if (press)
ok = mouse_pressed (but, &x, &y);
else
ok = mouse_released (but, &x, &y);
if (ok)
{
event.kind = mouse_click;
event.code = but;
event.modifiers
= (shift_p ? shift_modifier : 0)
+ (ctrl_p ? ctrl_modifier : 0)
+ (alt_p ? meta_modifier : 0)
+ (press ? down_modifier : up_modifier);
event.x = x;
event.y = y;
event.frame_or_window = selected_frame;
gettimeofday (&tv, NULL);
event.timestamp = tv.tv_usec;
kbd_buffer_store_event (&event);
}
}
}
return -1;
}
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 */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.