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emacs/src/msdos.c
Eli Zaretskii e023fb278c (IT_write_glyphs): Don't use CODING_REQUIRE_ENCODING 
macro, instead AND with CODING_REQUIRE_ENCODING_MASK.
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/* MS-DOS specific C utilities. -*- coding: raw-text -*-
Copyright (C) 1993, 94, 95, 96, 97, 1999 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 2, 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, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Contributed by Morten Welinder */
/* New display, keyboard, and mouse control by Kim F. Storm */
/* 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 <time.h>
#include <sys/param.h>
#include <sys/time.h>
#include <dos.h>
#include <errno.h>
#include <string.h> /* for bzero and string functions */
#include <sys/stat.h> /* for _fixpath */
#include <unistd.h> /* for chdir, dup, dup2, etc. */
#if __DJGPP__ >= 2
#include <fcntl.h>
#include <io.h> /* for setmode */
#include <dpmi.h> /* for __dpmi_xxx stuff */
#include <sys/farptr.h> /* for _farsetsel, _farnspokeb */
#include <libc/dosio.h> /* for _USE_LFN */
#include <conio.h> /* for cputs */
#endif
#include "msdos.h"
#include "systime.h"
#include "termhooks.h"
#include "termchar.h"
#include "dispextern.h"
#include "dosfns.h"
#include "termopts.h"
#include "charset.h"
#include "coding.h"
#include "disptab.h"
#include "frame.h"
#include "window.h"
#include "buffer.h"
#include "commands.h"
#include "blockinput.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
#ifndef _USE_LFN
#define _USE_LFN 0
#endif
#ifndef _dos_ds
#define _dos_ds _go32_info_block.selector_for_linear_memory
#endif
#if __DJGPP__ > 1
#include <signal.h>
#include "syssignal.h"
#ifndef SYSTEM_MALLOC
#ifdef GNU_MALLOC
/* If other `malloc' than ours is used, force our `sbrk' behave like
Unix programs expect (resize memory blocks to keep them contiguous).
If `sbrk' from `ralloc.c' is NOT used, also zero-out sbrk'ed memory,
because that's what `gmalloc' expects to get. */
#include <crt0.h>
#ifdef REL_ALLOC
int _crt0_startup_flags = _CRT0_FLAG_UNIX_SBRK;
#else /* not REL_ALLOC */
int _crt0_startup_flags = (_CRT0_FLAG_UNIX_SBRK | _CRT0_FLAG_FILL_SBRK_MEMORY);
#endif /* not REL_ALLOC */
#endif /* GNU_MALLOC */
#endif /* not SYSTEM_MALLOC */
#endif /* __DJGPP__ > 1 */
static unsigned long
event_timestamp ()
{
struct time t;
unsigned long s;
gettime (&t);
s = t.ti_min;
s *= 60;
s += t.ti_sec;
s *= 1000;
s += t.ti_hund * 10;
return s;
}
/* ------------------------ Mouse control ---------------------------
*
* Coordinates are in screen positions and zero based.
* Mouse buttons are numbered from left to right and also zero based.
*/
/* This used to be in termhooks.h, but mainstream Emacs code no longer
uses it, and it was removed... */
#define NUM_MOUSE_BUTTONS (5)
int have_mouse; /* 0: no, 1: enabled, -1: disabled */
static int mouse_visible;
static int mouse_last_x;
static int mouse_last_y;
static int mouse_button_translate[NUM_MOUSE_BUTTONS];
static int mouse_button_count;
void
mouse_on ()
{
union REGS regs;
if (have_mouse > 0 && !mouse_visible)
{
if (termscript)
fprintf (termscript, "<M_ON>");
regs.x.ax = 0x0001;
int86 (0x33, &regs, &regs);
mouse_visible = 1;
}
}
void
mouse_off ()
{
union REGS regs;
if (have_mouse > 0 && mouse_visible)
{
if (termscript)
fprintf (termscript, "<M_OFF>");
regs.x.ax = 0x0002;
int86 (0x33, &regs, &regs);
mouse_visible = 0;
}
}
static void
mouse_get_xy (int *x, int *y)
{
union REGS regs;
regs.x.ax = 0x0003;
int86 (0x33, &regs, &regs);
*x = regs.x.cx / 8;
*y = regs.x.dx / 8;
}
void
mouse_moveto (x, y)
int x, y;
{
union REGS regs;
if (termscript)
fprintf (termscript, "<M_XY=%dx%d>", x, y);
regs.x.ax = 0x0004;
mouse_last_x = regs.x.cx = x * 8;
mouse_last_y = regs.x.dx = y * 8;
int86 (0x33, &regs, &regs);
}
static 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, &regs, &regs);
if (regs.x.bx)
*xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
return (regs.x.bx != 0);
}
static 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, &regs, &regs);
if (regs.x.bx)
*xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
return (regs.x.bx != 0);
}
static int
mouse_button_depressed (b, xp, yp)
int b, *xp, *yp;
{
union REGS regs;
if (b >= mouse_button_count)
return 0;
regs.x.ax = 0x0003;
int86 (0x33, &regs, &regs);
if ((regs.x.bx & (1 << mouse_button_translate[b])) != 0)
{
*xp = regs.x.cx / 8;
*yp = regs.x.dx / 8;
return 1;
}
return 0;
}
void
mouse_get_pos (f, insist, bar_window, part, x, y, time)
FRAME_PTR *f;
int insist;
Lisp_Object *bar_window, *x, *y;
enum scroll_bar_part *part;
unsigned long *time;
{
int ix, iy;
Lisp_Object frame, tail;
/* Clear the mouse-moved flag for every frame on this display. */
FOR_EACH_FRAME (tail, frame)
XFRAME (frame)->mouse_moved = 0;
*f = SELECTED_FRAME();
*bar_window = Qnil;
mouse_get_xy (&ix, &iy);
*time = event_timestamp ();
*x = make_number (mouse_last_x = ix);
*y = make_number (mouse_last_y = iy);
}
static void
mouse_check_moved ()
{
int x, y;
mouse_get_xy (&x, &y);
SELECTED_FRAME()->mouse_moved |= (x != mouse_last_x || y != mouse_last_y);
mouse_last_x = x;
mouse_last_y = y;
}
void
mouse_init ()
{
union REGS regs;
int b;
if (termscript)
fprintf (termscript, "<M_INIT>");
regs.x.ax = 0x0021;
int86 (0x33, &regs, &regs);
/* Reset the mouse last press/release info. It seems that Windows
doesn't do that automatically when function 21h is called, which
causes Emacs to ``remember'' the click that switched focus to the
window just before Emacs was started from that window. */
for (b = 0; b < mouse_button_count; b++)
{
int dummy_x, dummy_y;
(void) mouse_pressed (b, &dummy_x, &dummy_y);
(void) mouse_released (b, &dummy_x, &dummy_y);
}
regs.x.ax = 0x0007;
regs.x.cx = 0;
regs.x.dx = 8 * (ScreenCols () - 1);
int86 (0x33, &regs, &regs);
regs.x.ax = 0x0008;
regs.x.cx = 0;
regs.x.dx = 8 * (ScreenRows () - 1);
int86 (0x33, &regs, &regs);
mouse_moveto (0, 0);
mouse_visible = 0;
}
/* ------------------------- Screen control ----------------------
*
*/
static int internal_terminal = 0;
#ifndef HAVE_X_WINDOWS
extern unsigned char ScreenAttrib;
static int screen_face;
static int highlight;
static int screen_size_X;
static int screen_size_Y;
static int screen_size;
static int current_pos_X;
static int current_pos_Y;
static int new_pos_X;
static int new_pos_Y;
static void *startup_screen_buffer;
static int startup_screen_size_X;
static int startup_screen_size_Y;
static int startup_pos_X;
static int startup_pos_Y;
static unsigned char startup_screen_attrib;
static clock_t startup_time;
static int term_setup_done;
static unsigned short outside_cursor;
/* Similar to the_only_frame. */
struct x_output the_only_x_display;
/* Support for DOS/V (allows Japanese characters to be displayed on
standard, non-Japanese, ATs). Only supported for DJGPP v2 and later. */
/* Holds the address of the text-mode screen buffer. */
static unsigned long screen_old_address = 0;
/* Segment and offset of the virtual screen. If 0, DOS/V is NOT loaded. */
static unsigned short screen_virtual_segment = 0;
static unsigned short screen_virtual_offset = 0;
/* A flag to control how to display unibyte 8-bit characters. */
extern int unibyte_display_via_language_environment;
Lisp_Object Qbar;
#if __DJGPP__ > 1
/* Update the screen from a part of relocated DOS/V screen buffer which
begins at OFFSET and includes COUNT characters. */
static void
dosv_refresh_virtual_screen (int offset, int count)
{
__dpmi_regs regs;
if (offset < 0 || count < 0) /* paranoia; invalid values crash DOS/V */
return;
regs.h.ah = 0xff; /* update relocated screen */
regs.x.es = screen_virtual_segment;
regs.x.di = screen_virtual_offset + offset;
regs.x.cx = count;
__dpmi_int (0x10, &regs);
}
#endif
static void
dos_direct_output (y, x, buf, len)
int y;
int x;
char *buf;
int len;
{
int t0 = 2 * (x + y * screen_size_X);
int t = t0 + (int) ScreenPrimary;
int l0 = len;
#if (__DJGPP__ < 2)
while (--len >= 0) {
dosmemput (buf++, 1, t);
t += 2;
}
#else
/* This is faster. */
for (_farsetsel (_dos_ds); --len >= 0; t += 2, buf++)
_farnspokeb (t, *buf);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (t0, l0);
#endif
}
#endif
/* Flash the screen as a substitute for BEEPs. */
#if (__DJGPP__ < 2)
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" (screen_size)
: "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx");
}
static void
ScreenVisualBell (void)
{
/* This creates an xor-mask that will swap the default fore- and
background colors. */
do_visible_bell (((the_only_x_display.foreground_pixel
^ the_only_x_display.background_pixel)
* 0x11) & 0x7f);
}
#endif
#ifndef HAVE_X_WINDOWS
static int blink_bit = -1; /* the state of the blink bit at startup */
/* Enable bright background colors. */
static void
bright_bg (void)
{
union REGS regs;
/* Remember the original state of the blink/bright-background bit.
It is stored at 0040:0065h in the BIOS data area. */
if (blink_bit == -1)
blink_bit = (_farpeekb (_dos_ds, 0x465) & 0x20) == 0x20;
regs.h.bl = 0;
regs.x.ax = 0x1003;
int86 (0x10, &regs, &regs);
}
/* Disable bright background colors (and enable blinking) if we found
the video system in that state at startup. */
static void
maybe_enable_blinking (void)
{
if (blink_bit == 1)
{
union REGS regs;
regs.h.bl = 1;
regs.x.ax = 0x1003;
int86 (0x10, &regs, &regs);
}
}
/* Return non-zero if the system has a VGA adapter. */
static int
vga_installed (void)
{
union REGS regs;
regs.x.ax = 0x1a00;
int86 (0x10, &regs, &regs);
if (regs.h.al == 0x1a && regs.h.bl > 5 && regs.h.bl < 13)
return 1;
return 0;
}
/* Set the screen dimensions so that it can show no less than
ROWS x COLS frame. */
void
dos_set_window_size (rows, cols)
int *rows, *cols;
{
char video_name[30];
Lisp_Object video_mode;
int video_mode_value;
int have_vga = 0;
union REGS regs;
int current_rows = ScreenRows (), current_cols = ScreenCols ();
if (*rows == current_rows && *cols == current_cols)
return;
mouse_off ();
have_vga = vga_installed ();
/* If the user specified a special video mode for these dimensions,
use that mode. */
sprintf (video_name, "screen-dimensions-%dx%d", *rows, *cols);
video_mode = XSYMBOL (Fintern_soft (build_string (video_name),
Qnil))-> value;
if (INTEGERP (video_mode)
&& (video_mode_value = XINT (video_mode)) > 0)
{
regs.x.ax = video_mode_value;
int86 (0x10, &regs, &regs);
if (have_mouse)
{
/* Must hardware-reset the mouse, or else it won't update
its notion of screen dimensions for some non-standard
video modes. This is *painfully* slow... */
regs.x.ax = 0;
int86 (0x33, &regs, &regs);
}
}
/* Find one of the dimensions supported by standard EGA/VGA
which gives us at least the required dimensions. */
#if __DJGPP__ > 1
else
{
static struct {
int rows;
int need_vga;
} std_dimension[] = {
{25, 0},
{28, 1},
{35, 0},
{40, 1},
{43, 0},
{50, 1}
};
int i = 0;
while (i < sizeof (std_dimension) / sizeof (std_dimension[0]))
{
if (std_dimension[i].need_vga <= have_vga
&& std_dimension[i].rows >= *rows)
{
if (std_dimension[i].rows != current_rows
|| *cols != current_cols)
_set_screen_lines (std_dimension[i].rows);
break;
}
i++;
}
}
#else /* not __DJGPP__ > 1 */
else if (*rows <= 25)
{
if (current_rows != 25 || current_cols != 80)
{
regs.x.ax = 3;
int86 (0x10, &regs, &regs);
regs.x.ax = 0x1101;
regs.h.bl = 0;
int86 (0x10, &regs, &regs);
regs.x.ax = 0x1200;
regs.h.bl = 32;
int86 (0x10, &regs, &regs);
regs.x.ax = 3;
int86 (0x10, &regs, &regs);
}
}
else if (*rows <= 50)
if (have_vga && (current_rows != 50 || current_cols != 80)
|| *rows <= 43 && (current_rows != 43 || current_cols != 80))
{
regs.x.ax = 3;
int86 (0x10, &regs, &regs);
regs.x.ax = 0x1112;
regs.h.bl = 0;
int86 (0x10, &regs, &regs);
regs.x.ax = 0x1200;
regs.h.bl = 32;
int86 (0x10, &regs, &regs);
regs.x.ax = 0x0100;
regs.x.cx = 7;
int86 (0x10, &regs, &regs);
}
#endif /* not __DJGPP__ > 1 */
if (have_mouse)
{
mouse_init ();
mouse_on ();
}
/* Tell the caller what dimensions have been REALLY set. */
*rows = ScreenRows ();
*cols = ScreenCols ();
#if __DJGPP__ > 1
/* If the dimensions changed, the mouse highlight info is invalid. */
if (current_rows != *rows || current_cols != *cols)
{
struct frame *f = SELECTED_FRAME();
struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
Lisp_Object window = dpyinfo->mouse_face_window;
if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f)
{
dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
dpyinfo->mouse_face_window = Qnil;
}
}
#endif
/* Enable bright background colors. */
bright_bg ();
/* FIXME: I'm not sure the above will run at all on DOS/V. But let's
be defensive anyway. */
if (screen_virtual_segment)
dosv_refresh_virtual_screen (0, *cols * *rows);
}
/* If we write a character in the position where the mouse is,
the mouse cursor may need to be refreshed. */
static void
mouse_off_maybe ()
{
int x, y;
if (!mouse_visible)
return;
mouse_get_xy (&x, &y);
if (y != new_pos_Y || x < new_pos_X)
return;
mouse_off ();
}
#define DEFAULT_CURSOR_START (-1)
#define DEFAULT_CURSOR_WIDTH (-1)
#define BOX_CURSOR_WIDTH (-32)
/* Set cursor to begin at scan line START_LINE in the character cell
and extend for WIDTH scan lines. Scan lines are counted from top
of the character cell, starting from zero. */
static void
msdos_set_cursor_shape (struct frame *f, int start_line, int width)
{
#if __DJGPP__ > 1
unsigned desired_cursor;
__dpmi_regs regs;
int max_line, top_line, bot_line;
/* Avoid the costly BIOS call if F isn't the currently selected
frame. Allow for NULL as unconditionally meaning the selected
frame. */
if (f && f != SELECTED_FRAME())
return;
/* The character cell size in scan lines is stored at 40:85 in the
BIOS data area. */
max_line = _farpeekw (_dos_ds, 0x485) - 1;
switch (max_line)
{
default: /* this relies on CGA cursor emulation being ON! */
case 7:
bot_line = 7;
break;
case 9:
bot_line = 9;
break;
case 13:
bot_line = 12;
break;
case 15:
bot_line = 14;
break;
}
if (width < 0)
{
if (width == BOX_CURSOR_WIDTH)
{
top_line = 0;
bot_line = max_line;
}
else if (start_line != DEFAULT_CURSOR_START)
{
top_line = start_line;
bot_line = top_line - width - 1;
}
else if (width != DEFAULT_CURSOR_WIDTH)
{
top_line = 0;
bot_line = -1 - width;
}
else
top_line = bot_line + 1;
}
else if (width == 0)
{
/* [31, 0] seems to DTRT for all screen sizes. */
top_line = 31;
bot_line = 0;
}
else /* WIDTH is positive */
{
if (start_line != DEFAULT_CURSOR_START)
bot_line = start_line;
top_line = bot_line - (width - 1);
}
/* If the current cursor shape is already what they want, we are
history here. */
desired_cursor = ((top_line & 0x1f) << 8) | (bot_line & 0x1f);
if (desired_cursor == _farpeekw (_dos_ds, 0x460))
return;
regs.h.ah = 1;
regs.x.cx = desired_cursor;
__dpmi_int (0x10, &regs);
#endif /* __DJGPP__ > 1 */
}
static void
IT_set_cursor_type (struct frame *f, Lisp_Object cursor_type)
{
if (EQ (cursor_type, Qbar))
{
/* Just BAR means the normal EGA/VGA cursor. */
msdos_set_cursor_shape (f, DEFAULT_CURSOR_START, DEFAULT_CURSOR_WIDTH);
}
else if (CONSP (cursor_type) && EQ (XCAR (cursor_type), Qbar))
{
Lisp_Object bar_parms = XCDR (cursor_type);
int width;
if (INTEGERP (bar_parms))
{
/* Feature: negative WIDTH means cursor at the top
of the character cell, zero means invisible cursor. */
width = XINT (bar_parms);
msdos_set_cursor_shape (f, width >= 0 ? DEFAULT_CURSOR_START : 0,
width);
}
else if (CONSP (bar_parms)
&& INTEGERP (XCAR (bar_parms))
&& INTEGERP (XCDR (bar_parms)))
{
int start_line = XINT (XCDR (bar_parms));
width = XINT (XCAR (bar_parms));
msdos_set_cursor_shape (f, start_line, width);
}
}
else
/* Treat anything unknown as "box cursor". This includes nil, so
that a frame which doesn't specify a cursor type gets a box,
which is the default in Emacs. */
msdos_set_cursor_shape (f, 0, BOX_CURSOR_WIDTH);
}
static void
IT_ring_bell (void)
{
if (visible_bell)
{
mouse_off ();
ScreenVisualBell ();
}
else
{
union REGS inregs, outregs;
inregs.h.ah = 2;
inregs.h.dl = 7;
intdos (&inregs, &outregs);
}
}
/* Given a face id FACE, extract the face parameters to be used for
display until the face changes. The face parameters (actually, its
color) are used to construct the video attribute byte for each
glyph during the construction of the buffer that is then blitted to
the video RAM. */
static void
IT_set_face (int face)
{
struct frame *sf = SELECTED_FRAME();
struct face *fp = FACE_FROM_ID (sf, face);
unsigned long fg, bg;
if (!fp)
{
fp = FACE_FROM_ID (sf, DEFAULT_FACE_ID);
/* The default face for the frame should always be realized and
cached. */
if (!fp)
abort ();
}
screen_face = face;
fg = fp->foreground;
bg = fp->background;
/* Don't use invalid colors. In particular, FACE_TTY_DEFAULT_*
colors mean use the colors of the default face, except that if
highlight is on, invert the foreground and the background. Note
that we assume all 16 colors to be available for the background,
since Emacs switches on this mode (and loses the blinking
attribute) at startup. */
if (fg == FACE_TTY_DEFAULT_COLOR || fg == FACE_TTY_DEFAULT_FG_COLOR)
fg = FRAME_FOREGROUND_PIXEL (sf);
else if (fg == FACE_TTY_DEFAULT_BG_COLOR)
fg = FRAME_BACKGROUND_PIXEL (sf);
if (bg == FACE_TTY_DEFAULT_COLOR || bg == FACE_TTY_DEFAULT_BG_COLOR)
bg = FRAME_BACKGROUND_PIXEL (sf);
else if (bg == FACE_TTY_DEFAULT_FG_COLOR)
bg = FRAME_FOREGROUND_PIXEL (sf);
/* Make sure highlighted lines really stand out, come what may. */
if ((highlight || fp->tty_reverse_p)
&& (fg == FRAME_FOREGROUND_PIXEL (sf)
&& bg == FRAME_BACKGROUND_PIXEL (sf)))
{
unsigned long tem = fg;
fg = bg;
bg = tem;
}
if (termscript)
fprintf (termscript, "<FACE %d%s: %d/%d[FG:%d/BG:%d]>", face,
highlight ? "H" : "", fp->foreground, fp->background, fg, bg);
if (fg >= 0 && fg < 16)
{
ScreenAttrib &= 0xf0;
ScreenAttrib |= fg;
}
if (bg >= 0 && bg < 16)
{
ScreenAttrib &= 0x0f;
ScreenAttrib |= ((bg & 0x0f) << 4);
}
}
Lisp_Object Vdos_unsupported_char_glyph;
static void
IT_write_glyphs (struct glyph *str, int str_len)
{
unsigned char *screen_buf, *screen_bp, *screen_buf_end, *bp;
int unsupported_face = FAST_GLYPH_FACE (Vdos_unsupported_char_glyph);
unsigned unsupported_char= FAST_GLYPH_CHAR (Vdos_unsupported_char_glyph);
int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y);
register int sl = str_len;
register int tlen = GLYPH_TABLE_LENGTH;
register Lisp_Object *tbase = GLYPH_TABLE_BASE;
/* If terminal_coding does any conversion, use it, otherwise use
safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here
because it always returns 1 if terminal_coding.src_multibyte is 1. */
struct coding_system *coding =
(terminal_coding.common_flags & CODING_REQUIRE_ENCODING_MASK
? &terminal_coding
: &safe_terminal_coding);
struct frame *sf;
/* Do we need to consider conversion of unibyte characters to
multibyte? */
int convert_unibyte_characters
= (NILP (current_buffer->enable_multibyte_characters)
&& unibyte_display_via_language_environment);
if (str_len <= 0) return;
screen_buf = screen_bp = alloca (str_len * 2);
screen_buf_end = screen_buf + str_len * 2;
sf = SELECTED_FRAME();
/* Since faces get cached and uncached behind our back, we can't
rely on their indices in the cache being consistent across
invocations. So always reset the screen face to the default
face of the frame, before writing glyphs, and let the glyphs
set the right face if it's different from the default. */
IT_set_face (DEFAULT_FACE_ID);
/* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
the tail. */
terminal_coding.mode &= ~CODING_MODE_LAST_BLOCK;
while (sl)
{
int cf, chlen, enclen;
unsigned char workbuf[MAX_MULTIBYTE_LENGTH], *buf;
unsigned ch;
/* Glyphs with GLYPH_MASK_PADDING bit set are actually there
only for the redisplay code to know how many columns does
this character occupy on the screen. Skip padding glyphs. */
if (CHAR_GLYPH_PADDING_P (*str))
{
str++;
sl--;
}
else
{
register GLYPH g = GLYPH_FROM_CHAR_GLYPH (*str);
int glyph_not_in_table = 0;
if (g < 0 || g >= tlen)
{
/* This glyph doesn't have an entry in Vglyph_table. */
ch = str->u.ch;
glyph_not_in_table = 1;
}
else
{
/* This glyph has an entry in Vglyph_table, so process
any aliases before testing for simpleness. */
GLYPH_FOLLOW_ALIASES (tbase, tlen, g);
ch = FAST_GLYPH_CHAR (g);
}
/* Convert the character code to multibyte, if they
requested display via language environment. We only want
to convert unibyte characters to multibyte in unibyte
buffers! Otherwise, the 8-bit value in CH came from the
display table set up to display foreign characters. */
if (SINGLE_BYTE_CHAR_P (ch) && convert_unibyte_characters
&& (ch >= 0240
|| (ch >= 0200 && !NILP (Vnonascii_translation_table))))
ch = unibyte_char_to_multibyte (ch);
/* Invalid characters are displayed with a special glyph. */
if (! CHAR_VALID_P (ch, 0))
{
g = !NILP (Vdos_unsupported_char_glyph)
? Vdos_unsupported_char_glyph
: MAKE_GLYPH (sf, '\177', GLYPH_FACE (sf, g));
ch = FAST_GLYPH_CHAR (g);
}
/* If the face of this glyph is different from the current
screen face, update the screen attribute byte. */
cf = FAST_GLYPH_FACE (g);
if (cf != screen_face)
IT_set_face (cf); /* handles invalid faces gracefully */
if (glyph_not_in_table || GLYPH_SIMPLE_P (tbase, tlen, g))
{
/* We generate the multi-byte form of CH in WORKBUF. */
chlen = CHAR_STRING (ch, workbuf);
buf = workbuf;
}
else
{
/* We have a string in Vglyph_table. */
chlen = GLYPH_LENGTH (tbase, g);
buf = GLYPH_STRING (tbase, g);
}
/* If the character is not multibyte, don't bother converting it. */
if (chlen == 1)
{
*conversion_buffer = (unsigned char)ch;
chlen = 0;
enclen = 1;
}
else
{
coding->src_multibyte = 1;
encode_coding (coding, buf, conversion_buffer, chlen,
conversion_buffer_size);
chlen -= coding->consumed;
enclen = coding->produced;
/* Replace glyph codes that cannot be converted by
terminal_coding with Vdos_unsupported_char_glyph. */
if (*conversion_buffer == '?')
{
char *cbp = conversion_buffer;
while (cbp < conversion_buffer + enclen && *cbp == '?')
*cbp++ = unsupported_char;
if (unsupported_face != screen_face)
IT_set_face (unsupported_face);
}
}
if (enclen + chlen > screen_buf_end - screen_bp)
{
/* The allocated buffer for screen writes is too small.
Flush it and loop again without incrementing STR, so
that the next loop will begin with the same glyph. */
int nbytes = screen_bp - screen_buf;
mouse_off_maybe ();
dosmemput (screen_buf, nbytes, (int)ScreenPrimary + offset);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (offset, nbytes / 2);
new_pos_X += nbytes / 2;
offset += nbytes;
/* Prepare to reuse the same buffer again. */
screen_bp = screen_buf;
}
else
{
/* There's enough place in the allocated buffer to add
the encoding of this glyph. */
/* First, copy the encoded bytes. */
for (bp = conversion_buffer; enclen--; bp++)
{
*screen_bp++ = (unsigned char)*bp;
*screen_bp++ = ScreenAttrib;
if (termscript)
fputc (*bp, termscript);
}
/* Now copy the bytes not consumed by the encoding. */
if (chlen > 0)
{
buf += coding->consumed;
while (chlen--)
{
if (termscript)
fputc (*buf, termscript);
*screen_bp++ = (unsigned char)*buf++;
*screen_bp++ = ScreenAttrib;
}
}
/* Update STR and its remaining length. */
str++;
sl--;
}
}
}
/* Dump whatever is left in the screen buffer. */
mouse_off_maybe ();
dosmemput (screen_buf, screen_bp - screen_buf, (int)ScreenPrimary + offset);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (offset, (screen_bp - screen_buf) / 2);
new_pos_X += (screen_bp - screen_buf) / 2;
/* We may have to output some codes to terminate the writing. */
if (CODING_REQUIRE_FLUSHING (coding))
{
coding->mode |= CODING_MODE_LAST_BLOCK;
encode_coding (coding, "", conversion_buffer, 0, conversion_buffer_size);
if (coding->produced > 0)
{
screen_buf = alloca (coding->produced * 2);
for (screen_bp = screen_buf, bp = conversion_buffer;
coding->produced--; bp++)
{
*screen_bp++ = (unsigned char)*bp;
*screen_bp++ = ScreenAttrib;
if (termscript)
fputc (*bp, termscript);
}
offset += screen_bp - screen_buf;
mouse_off_maybe ();
dosmemput (screen_buf, screen_bp - screen_buf,
(int)ScreenPrimary + offset);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (offset, (screen_bp - screen_buf) / 2);
new_pos_X += (screen_bp - screen_buf) / 2;
}
}
}
/************************************************************************
Mouse Highlight (and friends..)
************************************************************************/
/* This is used for debugging, to turn off note_mouse_highlight. */
int disable_mouse_highlight;
/* If a string, dos_rawgetc generates an event to display that string.
(The display is done in keyboard.c:read_char.) */
static Lisp_Object help_echo;
static Lisp_Object previous_help_echo; /* a helper temporary variable */
static int mouse_preempted = 0; /* non-zero when XMenu gobbles mouse events */
/* Set the mouse pointer shape according to whether it is in the
area where the mouse highlight is in effect. */
static void
IT_set_mouse_pointer (int mode)
{
/* A no-op for now. DOS text-mode mouse pointer doesn't offer too
many possibilities to change its shape, and the available
functionality pretty much sucks (e.g., almost every reasonable
shape will conceal the character it is on). Since the color of
the pointer changes in the highlighted area, it is not clear to
me whether anything else is required, anyway. */
}
/* Display the active region described by mouse_face_*
in its mouse-face if HL > 0, in its normal face if HL = 0. */
static void
show_mouse_face (struct display_info *dpyinfo, int hl)
{
struct window *w = XWINDOW (dpyinfo->mouse_face_window);
struct frame *f = XFRAME (WINDOW_FRAME (w));
int i;
struct face *fp;
/* If window is in the process of being destroyed, don't bother
doing anything. */
if (w->current_matrix == NULL)
goto set_cursor_shape;
/* Recognize when we are called to operate on rows that don't exist
anymore. This can happen when a window is split. */
if (dpyinfo->mouse_face_end_row >= w->current_matrix->nrows)
goto set_cursor_shape;
/* There's no sense to do anything if the mouse face isn't realized. */
if (hl > 0)
{
fp = FACE_FROM_ID (SELECTED_FRAME(), dpyinfo->mouse_face_face_id);
if (!fp)
goto set_cursor_shape;
}
/* Note that mouse_face_beg_row etc. are window relative. */
for (i = dpyinfo->mouse_face_beg_row;
i <= dpyinfo->mouse_face_end_row;
i++)
{
int start_hpos, end_hpos;
struct glyph_row *row = MATRIX_ROW (w->current_matrix, i);
/* Don't do anything if row doesn't have valid contents. */
if (!row->enabled_p)
continue;
/* For all but the first row, the highlight starts at column 0. */
if (i == dpyinfo->mouse_face_beg_row)
start_hpos = dpyinfo->mouse_face_beg_col;
else
start_hpos = 0;
if (i == dpyinfo->mouse_face_end_row)
end_hpos = dpyinfo->mouse_face_end_col;
else
end_hpos = row->used[TEXT_AREA];
if (end_hpos <= start_hpos)
continue;
if (hl > 0)
{
int vpos = row->y + WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
int kstart = start_hpos + WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w);
int nglyphs = end_hpos - start_hpos;
int offset = ScreenPrimary + 2*(vpos*screen_size_X + kstart) + 1;
int start_offset = offset;
if (termscript)
fprintf (termscript, "\n<MH+ %d-%d:%d>",
kstart, kstart + nglyphs - 1, vpos);
mouse_off ();
IT_set_face (dpyinfo->mouse_face_face_id);
/* Since we are going to change only the _colors_ of the
displayed text, there's no need to go through all the
pain of generating and encoding the text from the glyphs.
Instead, we simply poke the attribute byte of each
affected position in video memory with the colors
computed by IT_set_face! */
_farsetsel (_dos_ds);
while (nglyphs--)
{
_farnspokeb (offset, ScreenAttrib);
offset += 2;
}
if (screen_virtual_segment)
dosv_refresh_virtual_screen (start_offset, end_hpos - start_hpos);
mouse_on ();
}
else
{
/* We are removing a previously-drawn mouse highlight. The
safest way to do so is to redraw the glyphs anew, since
all kinds of faces and display tables could have changed
behind our back. */
int nglyphs = end_hpos - start_hpos;
int save_x = new_pos_X, save_y = new_pos_Y;
if (end_hpos >= row->used[TEXT_AREA])
nglyphs = row->used[TEXT_AREA] - start_hpos;
/* IT_write_glyphs writes at cursor position, so we need to
temporarily move cursor coordinates to the beginning of
the highlight region. */
new_pos_X = start_hpos + WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w);
new_pos_Y = row->y + WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
if (termscript)
fprintf (termscript, "<MH- %d-%d:%d>",
new_pos_X, new_pos_X + nglyphs - 1, new_pos_Y);
IT_write_glyphs (row->glyphs[TEXT_AREA] + start_hpos, nglyphs);
if (termscript)
fputs ("\n", termscript);
new_pos_X = save_x;
new_pos_Y = save_y;
}
}
set_cursor_shape:
/* Change the mouse pointer shape. */
IT_set_mouse_pointer (hl);
}
/* Clear out the mouse-highlighted active region.
Redraw it un-highlighted first. */
static void
clear_mouse_face (struct display_info *dpyinfo)
{
if (! NILP (dpyinfo->mouse_face_window))
show_mouse_face (dpyinfo, 0);
dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1;
dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1;
dpyinfo->mouse_face_window = Qnil;
}
/* Find the glyph matrix position of buffer position POS in window W.
*HPOS and *VPOS are set to the positions found. W's current glyphs
must be up to date. If POS is above window start return (0, 0).
If POS is after end of W, return end of last line in W. */
static int
fast_find_position (struct window *w, int pos, int *hpos, int *vpos)
{
int i;
int lastcol;
int maybe_next_line_p = 0;
int line_start_position;
int yb = window_text_bottom_y (w);
struct glyph_row *row = MATRIX_ROW (w->current_matrix, 0);
struct glyph_row *best_row = row;
while (row->y < yb)
{
if (row->used[TEXT_AREA])
line_start_position = row->glyphs[TEXT_AREA]->charpos;
else
line_start_position = 0;
if (line_start_position > pos)
break;
/* If the position sought is the end of the buffer,
don't include the blank lines at the bottom of the window. */
else if (line_start_position == pos
&& pos == BUF_ZV (XBUFFER (w->buffer)))
{
maybe_next_line_p = 1;
break;
}
else if (line_start_position > 0)
best_row = row;
++row;
}
/* Find the right column within BEST_ROW. */
lastcol = 0;
row = best_row;
for (i = 0; i < row->used[TEXT_AREA]; i++)
{
struct glyph *glyph = row->glyphs[TEXT_AREA] + i;
int charpos;
charpos = glyph->charpos;
if (charpos == pos)
{
*hpos = i;
*vpos = row->y;
return 1;
}
else if (charpos > pos)
break;
else if (charpos > 0)
lastcol = i;
}
/* If we're looking for the end of the buffer,
and we didn't find it in the line we scanned,
use the start of the following line. */
if (maybe_next_line_p)
{
++row;
lastcol = 0;
}
*vpos = row->y;
*hpos = lastcol + 1;
return 0;
}
/* Take proper action when mouse has moved to the mode or top line of
window W, x-position X. MODE_LINE_P non-zero means mouse is on the
mode line. X is relative to the start of the text display area of
W, so the width of bitmap areas and scroll bars must be subtracted
to get a position relative to the start of the mode line. */
static void
IT_note_mode_line_highlight (struct window *w, int x, int mode_line_p)
{
struct frame *f = XFRAME (w->frame);
struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
struct glyph_row *row;
if (mode_line_p)
row = MATRIX_MODE_LINE_ROW (w->current_matrix);
else
row = MATRIX_HEADER_LINE_ROW (w->current_matrix);
if (row->enabled_p)
{
extern Lisp_Object Qhelp_echo;
struct glyph *glyph, *end;
Lisp_Object help, map;
/* Find the glyph under X. */
glyph = row->glyphs[TEXT_AREA]
+ x - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * CANON_X_UNIT (f);
end = glyph + row->used[TEXT_AREA];
if (glyph < end
&& STRINGP (glyph->object)
&& XSTRING (glyph->object)->intervals
&& glyph->charpos >= 0
&& glyph->charpos < XSTRING (glyph->object)->size)
{
/* If we're on a string with `help-echo' text property,
arrange for the help to be displayed. This is done by
setting the global variable help_echo to the help string. */
help = Fget_text_property (make_number (glyph->charpos),
Qhelp_echo, glyph->object);
if (STRINGP (help))
help_echo = help;
}
}
}
/* Take proper action when the mouse has moved to position X, Y on
frame F as regards highlighting characters that have mouse-face
properties. Also de-highlighting chars where the mouse was before.
X and Y can be negative or out of range. */
static void
IT_note_mouse_highlight (struct frame *f, int x, int y)
{
struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
int portion;
Lisp_Object window;
struct window *w;
/* When a menu is active, don't highlight because this looks odd. */
if (mouse_preempted)
return;
if (disable_mouse_highlight
|| !f->glyphs_initialized_p)
return;
dpyinfo->mouse_face_mouse_x = x;
dpyinfo->mouse_face_mouse_y = y;
dpyinfo->mouse_face_mouse_frame = f;
if (dpyinfo->mouse_face_defer)
return;
if (gc_in_progress)
{
dpyinfo->mouse_face_deferred_gc = 1;
return;
}
/* Which window is that in? */
window = window_from_coordinates (f, x, y, &portion, 0);
/* If we were displaying active text in another window, clear that. */
if (! EQ (window, dpyinfo->mouse_face_window))
clear_mouse_face (dpyinfo);
/* Not on a window -> return. */
if (!WINDOWP (window))
return;
/* Convert to window-relative coordinates. */
w = XWINDOW (window);
x -= WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w);
y -= WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
if (portion == 1 || portion == 3)
{
/* Mouse is on the mode or top line. */
IT_note_mode_line_highlight (w, x, portion == 1);
return;
}
else
IT_set_mouse_pointer (0);
/* Are we in a window whose display is up to date?
And verify the buffer's text has not changed. */
if (/* Within text portion of the window. */
portion == 0
&& EQ (w->window_end_valid, w->buffer)
&& XFASTINT (w->last_modified) == BUF_MODIFF (XBUFFER (w->buffer))
&& (XFASTINT (w->last_overlay_modified)
== BUF_OVERLAY_MODIFF (XBUFFER (w->buffer))))
{
int pos, i, area;
struct glyph_row *row;
struct glyph *glyph;
/* Find the glyph under X/Y. */
glyph = NULL;
if (y < w->current_matrix->nrows)
{
row = MATRIX_ROW (w->current_matrix, y);
if (row->enabled_p
&& row->displays_text_p
&& x < window_box_width (w, TEXT_AREA))
{
glyph = row->glyphs[TEXT_AREA];
if (x >= row->used[TEXT_AREA])
glyph = NULL;
else
{
glyph += x;
if (!BUFFERP (glyph->object))
glyph = NULL;
}
}
}
/* Clear mouse face if X/Y not over text. */
if (glyph == NULL)
{
clear_mouse_face (dpyinfo);
return;
}
if (!BUFFERP (glyph->object))
abort ();
pos = glyph->charpos;
/* Check for mouse-face and help-echo. */
{
extern Lisp_Object Qmouse_face;
Lisp_Object mouse_face, overlay, position;
Lisp_Object *overlay_vec;
int len, noverlays;
struct buffer *obuf;
int obegv, ozv;
/* If we get an out-of-range value, return now; avoid an error. */
if (pos > BUF_Z (XBUFFER (w->buffer)))
return;
/* Make the window's buffer temporarily current for
overlays_at and compute_char_face. */
obuf = current_buffer;
current_buffer = XBUFFER (w->buffer);
obegv = BEGV;
ozv = ZV;
BEGV = BEG;
ZV = Z;
/* Is this char mouse-active or does it have help-echo? */
XSETINT (position, pos);
/* Put all the overlays we want in a vector in overlay_vec.
Store the length in len. If there are more than 10, make
enough space for all, and try again. */
len = 10;
overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object));
noverlays = overlays_at (pos, 0, &overlay_vec, &len, NULL, NULL);
if (noverlays > len)
{
len = noverlays;
overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object));
noverlays = overlays_at (pos, 0, &overlay_vec, &len, NULL, NULL);
}
noverlays = sort_overlays (overlay_vec, noverlays, w);
/* Check mouse-face highlighting. */
if (! (EQ (window, dpyinfo->mouse_face_window)
&& y >= dpyinfo->mouse_face_beg_row
&& y <= dpyinfo->mouse_face_end_row
&& (y > dpyinfo->mouse_face_beg_row
|| x >= dpyinfo->mouse_face_beg_col)
&& (y < dpyinfo->mouse_face_end_row
|| x < dpyinfo->mouse_face_end_col
|| dpyinfo->mouse_face_past_end)))
{
/* Clear the display of the old active region, if any. */
clear_mouse_face (dpyinfo);
/* Find highest priority overlay that has a mouse-face prop. */
overlay = Qnil;
for (i = 0; i < noverlays; i++)
{
mouse_face = Foverlay_get (overlay_vec[i], Qmouse_face);
if (!NILP (mouse_face))
{
overlay = overlay_vec[i];
break;
}
}
/* If no overlay applies, get a text property. */
if (NILP (overlay))
mouse_face = Fget_text_property (position, Qmouse_face,
w->buffer);
/* Handle the overlay case. */
if (! NILP (overlay))
{
/* Find the range of text around this char that
should be active. */
Lisp_Object before, after;
int ignore;
before = Foverlay_start (overlay);
after = Foverlay_end (overlay);
/* Record this as the current active region. */
fast_find_position (w, XFASTINT (before),
&dpyinfo->mouse_face_beg_col,
&dpyinfo->mouse_face_beg_row);
dpyinfo->mouse_face_past_end
= !fast_find_position (w, XFASTINT (after),
&dpyinfo->mouse_face_end_col,
&dpyinfo->mouse_face_end_row);
dpyinfo->mouse_face_window = window;
dpyinfo->mouse_face_face_id
= face_at_buffer_position (w, pos, 0, 0,
&ignore, pos + 1, 1);
/* Display it as active. */
show_mouse_face (dpyinfo, 1);
}
/* Handle the text property case. */
else if (! NILP (mouse_face))
{
/* Find the range of text around this char that
should be active. */
Lisp_Object before, after, beginning, end;
int ignore;
beginning = Fmarker_position (w->start);
XSETINT (end, (BUF_Z (XBUFFER (w->buffer))
- XFASTINT (w->window_end_pos)));
before
= Fprevious_single_property_change (make_number (pos + 1),
Qmouse_face,
w->buffer, beginning);
after
= Fnext_single_property_change (position, Qmouse_face,
w->buffer, end);
/* Record this as the current active region. */
fast_find_position (w, XFASTINT (before),
&dpyinfo->mouse_face_beg_col,
&dpyinfo->mouse_face_beg_row);
dpyinfo->mouse_face_past_end
= !fast_find_position (w, XFASTINT (after),
&dpyinfo->mouse_face_end_col,
&dpyinfo->mouse_face_end_row);
dpyinfo->mouse_face_window = window;
dpyinfo->mouse_face_face_id
= face_at_buffer_position (w, pos, 0, 0,
&ignore, pos + 1, 1);
/* Display it as active. */
show_mouse_face (dpyinfo, 1);
}
}
/* Look for a `help-echo' property. */
{
Lisp_Object help;
extern Lisp_Object Qhelp_echo;
/* Check overlays first. */
help = Qnil;
for (i = 0; i < noverlays && !STRINGP (help); ++i)
help = Foverlay_get (overlay_vec[i], Qhelp_echo);
/* Try text properties. */
if (!STRINGP (help)
&& ((STRINGP (glyph->object)
&& glyph->charpos >= 0
&& glyph->charpos < XSTRING (glyph->object)->size)
|| (BUFFERP (glyph->object)
&& glyph->charpos >= BEGV
&& glyph->charpos < ZV)))
help = Fget_text_property (make_number (glyph->charpos),
Qhelp_echo, glyph->object);
if (STRINGP (help))
help_echo = help;
}
BEGV = obegv;
ZV = ozv;
current_buffer = obuf;
}
}
}
static void
IT_clear_end_of_line (int first_unused)
{
char *spaces, *sp;
int i, j;
int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y);
extern int fatal_error_in_progress;
if (new_pos_X >= first_unused || fatal_error_in_progress)
return;
IT_set_face (0);
i = (j = first_unused - new_pos_X) * 2;
if (termscript)
fprintf (termscript, "<CLR:EOL[%d..%d)>", new_pos_X, first_unused);
spaces = sp = alloca (i);
while (--j >= 0)
{
*sp++ = ' ';
*sp++ = ScreenAttrib;
}
mouse_off_maybe ();
dosmemput (spaces, i, (int)ScreenPrimary + offset);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (offset, i / 2);
/* clear_end_of_line_raw on term.c leaves the cursor at first_unused.
Let's follow their lead, in case someone relies on this. */
new_pos_X = first_unused;
}
static void
IT_clear_screen (void)
{
if (termscript)
fprintf (termscript, "<CLR:SCR>");
IT_set_face (0);
mouse_off ();
ScreenClear ();
if (screen_virtual_segment)
dosv_refresh_virtual_screen (0, screen_size);
new_pos_X = new_pos_Y = 0;
}
static void
IT_clear_to_end (void)
{
if (termscript)
fprintf (termscript, "<CLR:EOS>");
while (new_pos_Y < screen_size_Y) {
new_pos_X = 0;
IT_clear_end_of_line (screen_size_X);
new_pos_Y++;
}
}
static void
IT_cursor_to (int y, int x)
{
if (termscript)
fprintf (termscript, "\n<XY=%dx%d>", x, y);
new_pos_X = x;
new_pos_Y = y;
}
static int cursor_cleared;
static void
IT_display_cursor (int on)
{
if (on && cursor_cleared)
{
ScreenSetCursor (current_pos_Y, current_pos_X);
cursor_cleared = 0;
}
else if (!on && !cursor_cleared)
{
ScreenSetCursor (-1, -1);
cursor_cleared = 1;
}
}
/* Emacs calls cursor-movement functions a lot when it updates the
display (probably a legacy of old terminals where you cannot
update a screen line without first moving the cursor there).
However, cursor movement is expensive on MSDOS (it calls a slow
BIOS function and requires 2 mode switches), while actual screen
updates access the video memory directly and don't depend on
cursor position. To avoid slowing down the redisplay, we cheat:
all functions that move the cursor only set internal variables
which record the cursor position, whereas the cursor is only
moved to its final position whenever screen update is complete.
`IT_cmgoto' is called from the keyboard reading loop and when the
frame update is complete. This means that we are ready for user
input, so we update the cursor position to show where the point is,
and also make the mouse pointer visible.
Special treatment is required when the cursor is in the echo area,
to put the cursor at the end of the text displayed there. */
static void
IT_cmgoto (FRAME_PTR f)
{
/* Only set the cursor to where it should be if the display is
already in sync with the window contents. */
int update_cursor_pos = 1; /* MODIFF == unchanged_modified; */
/* FIXME: This needs to be rewritten for the new redisplay, or
removed. */
#if 0
static int previous_pos_X = -1;
update_cursor_pos = 1; /* temporary!!! */
/* If the display is in sync, forget any previous knowledge about
cursor position. This is primarily for unexpected events like
C-g in the minibuffer. */
if (update_cursor_pos && previous_pos_X >= 0)
previous_pos_X = -1;
/* If we are in the echo area, put the cursor at the
end of the echo area message. */
if (!update_cursor_pos
&& XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (f))->top) <= new_pos_Y)
{
int tem_X = current_pos_X, dummy;
if (echo_area_glyphs)
{
tem_X = echo_area_glyphs_length;
/* Save current cursor position, to be restored after the
echo area message is erased. Only remember one level
of previous cursor position. */
if (previous_pos_X == -1)
ScreenGetCursor (&dummy, &previous_pos_X);
}
else if (previous_pos_X >= 0)
{
/* We wind up here after the echo area message is erased.
Restore the cursor position we remembered above. */
tem_X = previous_pos_X;
previous_pos_X = -1;
}
if (current_pos_X != tem_X)
{
new_pos_X = tem_X;
update_cursor_pos = 1;
}
}
#endif
if (update_cursor_pos
&& (current_pos_X != new_pos_X || current_pos_Y != new_pos_Y))
{
ScreenSetCursor (current_pos_Y = new_pos_Y, current_pos_X = new_pos_X);
if (termscript)
fprintf (termscript, "\n<CURSOR:%dx%d>", current_pos_X, current_pos_Y);
}
/* Maybe cursor is invisible, so make it visible. */
IT_display_cursor (1);
/* Mouse pointer should be always visible if we are waiting for
keyboard input. */
if (!mouse_visible)
mouse_on ();
}
static void
IT_reassert_line_highlight (int new, int vpos)
{
highlight = new;
}
static void
IT_change_line_highlight (int new_highlight, int y, int vpos, int first_unused_hpos)
{
highlight = new_highlight;
IT_cursor_to (vpos, 0);
IT_clear_end_of_line (first_unused_hpos);
}
static void
IT_update_begin (struct frame *f)
{
struct display_info *display_info = FRAME_X_DISPLAY_INFO (f);
highlight = 0;
BLOCK_INPUT;
if (f == display_info->mouse_face_mouse_frame)
{
/* Don't do highlighting for mouse motion during the update. */
display_info->mouse_face_defer = 1;
/* If F needs to be redrawn, simply forget about any prior mouse
highlighting. */
if (FRAME_GARBAGED_P (f))
display_info->mouse_face_window = Qnil;
/* Can we tell that this update does not affect the window
where the mouse highlight is? If so, no need to turn off.
Likewise, don't do anything if the frame is garbaged;
in that case, the frame's current matrix that we would use
is all wrong, and we will redisplay that line anyway. */
if (!NILP (display_info->mouse_face_window)
&& WINDOWP (display_info->mouse_face_window))
{
struct window *w = XWINDOW (display_info->mouse_face_window);
int i;
/* If the mouse highlight is in the window that was deleted
(e.g., if it was popped by completion), clear highlight
unconditionally. */
if (NILP (w->buffer))
display_info->mouse_face_window = Qnil;
else
{
for (i = 0; i < w->desired_matrix->nrows; ++i)
if (MATRIX_ROW_ENABLED_P (w->desired_matrix, i))
break;
}
if (NILP (w->buffer) || i < w->desired_matrix->nrows)
clear_mouse_face (display_info);
}
}
else if (!FRAME_LIVE_P (display_info->mouse_face_mouse_frame))
{
/* If the frame with mouse highlight was deleted, invalidate the
highlight info. */
display_info->mouse_face_beg_row = display_info->mouse_face_beg_col = -1;
display_info->mouse_face_end_row = display_info->mouse_face_end_col = -1;
display_info->mouse_face_window = Qnil;
display_info->mouse_face_deferred_gc = 0;
display_info->mouse_face_mouse_frame = NULL;
}
UNBLOCK_INPUT;
}
static void
IT_update_end (struct frame *f)
{
highlight = 0;
FRAME_X_DISPLAY_INFO (f)->mouse_face_defer = 0;
}
Lisp_Object Qcursor_type;
static void
IT_frame_up_to_date (struct frame *f)
{
struct display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f);
Lisp_Object new_cursor, frame_desired_cursor;
struct window *sw;
if (dpyinfo->mouse_face_deferred_gc
|| f == dpyinfo->mouse_face_mouse_frame)
{
BLOCK_INPUT;
if (dpyinfo->mouse_face_mouse_frame)
IT_note_mouse_highlight (dpyinfo->mouse_face_mouse_frame,
dpyinfo->mouse_face_mouse_x,
dpyinfo->mouse_face_mouse_y);
dpyinfo->mouse_face_deferred_gc = 0;
UNBLOCK_INPUT;
}
/* Set the cursor type to whatever they wanted. In a minibuffer
window, we want the cursor to appear only if we are reading input
from this window, and we want the cursor to be taken from the
frame parameters. For the selected window, we use either its
buffer-local value or the value from the frame parameters if the
buffer doesn't define its local value for the cursor type. */
sw = XWINDOW (f->selected_window);
frame_desired_cursor = Fcdr (Fassq (Qcursor_type, f->param_alist));
if (cursor_in_echo_area
&& FRAME_HAS_MINIBUF_P (f)
&& EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window)
&& sw == XWINDOW (echo_area_window))
new_cursor = frame_desired_cursor;
else
{
struct buffer *b = XBUFFER (sw->buffer);
if (EQ (b->cursor_type, Qt))
new_cursor = frame_desired_cursor;
else if (NILP (b->cursor_type)) /* nil means no cursor */
new_cursor = Fcons (Qbar, make_number (0));
else
new_cursor = b->cursor_type;
}
IT_set_cursor_type (f, new_cursor);
IT_cmgoto (f); /* position cursor when update is done */
}
/* Copy LEN glyphs displayed on a single line whose vertical position
is YPOS, beginning at horizontal position XFROM to horizontal
position XTO, by moving blocks in the video memory. Used by
functions that insert and delete glyphs. */
static void
IT_copy_glyphs (int xfrom, int xto, size_t len, int ypos)
{
/* The offsets of source and destination relative to the
conventional memorty selector. */
int from = 2 * (xfrom + screen_size_X * ypos) + ScreenPrimary;
int to = 2 * (xto + screen_size_X * ypos) + ScreenPrimary;
if (from == to || len <= 0)
return;
_farsetsel (_dos_ds);
/* The source and destination might overlap, so we need to move
glyphs non-destructively. */
if (from > to)
{
for ( ; len; from += 2, to += 2, len--)
_farnspokew (to, _farnspeekw (from));
}
else
{
from += (len - 1) * 2;
to += (len - 1) * 2;
for ( ; len; from -= 2, to -= 2, len--)
_farnspokew (to, _farnspeekw (from));
}
if (screen_virtual_segment)
dosv_refresh_virtual_screen (ypos * screen_size_X * 2, screen_size_X);
}
/* Insert and delete glyphs. */
static void
IT_insert_glyphs (start, len)
register struct glyph *start;
register int len;
{
int shift_by_width = screen_size_X - (new_pos_X + len);
/* Shift right the glyphs from the nominal cursor position to the
end of this line. */
IT_copy_glyphs (new_pos_X, new_pos_X + len, shift_by_width, new_pos_Y);
/* Now write the glyphs to be inserted. */
IT_write_glyphs (start, len);
}
static void
IT_delete_glyphs (n)
register int n;
{
abort ();
}
/* set-window-configuration on window.c needs this. */
void
x_set_menu_bar_lines (f, value, oldval)
struct frame *f;
Lisp_Object value, oldval;
{
set_menu_bar_lines (f, value, oldval);
}
/* This was copied from xfns.c */
Lisp_Object Qbackground_color;
Lisp_Object Qforeground_color;
Lisp_Object Qreverse;
extern Lisp_Object Qtitle;
/* IT_set_terminal_modes is called when emacs is started,
resumed, and whenever the screen is redrawn! */
static void
IT_set_terminal_modes (void)
{
if (termscript)
fprintf (termscript, "\n<SET_TERM>");
highlight = 0;
screen_size_X = ScreenCols ();
screen_size_Y = ScreenRows ();
screen_size = screen_size_X * screen_size_Y;
new_pos_X = new_pos_Y = 0;
current_pos_X = current_pos_Y = -1;
if (term_setup_done)
return;
term_setup_done = 1;
startup_screen_size_X = screen_size_X;
startup_screen_size_Y = screen_size_Y;
startup_screen_attrib = ScreenAttrib;
#if __DJGPP__ > 1
/* Is DOS/V (or any other RSIS software which relocates
the screen) installed? */
{
unsigned short es_value;
__dpmi_regs regs;
regs.h.ah = 0xfe; /* get relocated screen address */
if (ScreenPrimary == 0xb0000UL || ScreenPrimary == 0xb8000UL)
regs.x.es = (ScreenPrimary >> 4) & 0xffff;
else if (screen_old_address) /* already switched to Japanese mode once */
regs.x.es = (screen_old_address >> 4) & 0xffff;
else
regs.x.es = ScreenMode () == 7 ? 0xb000 : 0xb800;
regs.x.di = 0;
es_value = regs.x.es;
__dpmi_int (0x10, &regs);
if (regs.x.es != es_value)
{
/* screen_old_address is only set if ScreenPrimary does NOT
already point to the relocated buffer address returned by
the Int 10h/AX=FEh call above. DJGPP v2.02 and later sets
ScreenPrimary to that address at startup under DOS/V. */
if (regs.x.es != (ScreenPrimary >> 4) & 0xffff)
screen_old_address = ScreenPrimary;
screen_virtual_segment = regs.x.es;
screen_virtual_offset = regs.x.di;
ScreenPrimary = (screen_virtual_segment << 4) + screen_virtual_offset;
}
}
#endif /* __DJGPP__ > 1 */
ScreenGetCursor (&startup_pos_Y, &startup_pos_X);
ScreenRetrieve (startup_screen_buffer = xmalloc (screen_size * 2));
if (termscript)
fprintf (termscript, "<SCREEN SAVED (dimensions=%dx%d)>\n",
screen_size_X, screen_size_Y);
bright_bg ();
}
/* IT_reset_terminal_modes is called when emacs is
suspended or killed. */
static void
IT_reset_terminal_modes (void)
{
int display_row_start = (int) ScreenPrimary;
int saved_row_len = startup_screen_size_X * 2;
int update_row_len = ScreenCols () * 2;
int current_rows = ScreenRows ();
int to_next_row = update_row_len;
unsigned char *saved_row = startup_screen_buffer;
int cursor_pos_X = ScreenCols () - 1;
int cursor_pos_Y = ScreenRows () - 1;
if (termscript)
fprintf (termscript, "\n<RESET_TERM>");
highlight = 0;
if (!term_setup_done)
return;
mouse_off ();
/* Leave the video system in the same state as we found it,
as far as the blink/bright-background bit is concerned. */
maybe_enable_blinking ();
/* We have a situation here.
We cannot just do ScreenUpdate(startup_screen_buffer) because
the luser could have changed screen dimensions inside Emacs
and failed (or didn't want) to restore them before killing
Emacs. ScreenUpdate() uses the *current* screen dimensions and
thus will happily use memory outside what was allocated for
`startup_screen_buffer'.
Thus we only restore as much as the current screen dimensions
can hold, and clear the rest (if the saved screen is smaller than
the current) with the color attribute saved at startup. The cursor
is also restored within the visible dimensions. */
ScreenAttrib = startup_screen_attrib;
/* Don't restore the screen if we are exiting less than 2 seconds
after startup: we might be crashing, and the screen might show
some vital clues to what's wrong. */
if (clock () - startup_time >= 2*CLOCKS_PER_SEC)
{
ScreenClear ();
if (screen_virtual_segment)
dosv_refresh_virtual_screen (0, screen_size);
if (update_row_len > saved_row_len)
update_row_len = saved_row_len;
if (current_rows > startup_screen_size_Y)
current_rows = startup_screen_size_Y;
if (termscript)
fprintf (termscript, "<SCREEN RESTORED (dimensions=%dx%d)>\n",
update_row_len / 2, current_rows);
while (current_rows--)
{
dosmemput (saved_row, update_row_len, display_row_start);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (display_row_start - ScreenPrimary,
update_row_len / 2);
saved_row += saved_row_len;
display_row_start += to_next_row;
}
}
if (startup_pos_X < cursor_pos_X)
cursor_pos_X = startup_pos_X;
if (startup_pos_Y < cursor_pos_Y)
cursor_pos_Y = startup_pos_Y;
ScreenSetCursor (cursor_pos_Y, cursor_pos_X);
xfree (startup_screen_buffer);
term_setup_done = 0;
}
static void
IT_set_terminal_window (int foo)
{
}
/* Remember the screen colors of the curent frame, to serve as the
default colors for newly-created frames. */
static int initial_screen_colors[2];
DEFUN ("msdos-remember-default-colors", Fmsdos_remember_default_colors,
Smsdos_remember_default_colors, 1, 1, 0,
"Remember the screen colors of the current frame.")
(frame)
Lisp_Object frame;
{
int reverse;
struct frame *f;
CHECK_FRAME (frame, 0);
f= XFRAME (frame);
reverse = EQ (Fcdr (Fassq (intern ("reverse"), f->param_alist)), Qt);
initial_screen_colors[0]
= reverse ? FRAME_BACKGROUND_PIXEL (f) : FRAME_FOREGROUND_PIXEL (f);
initial_screen_colors[1]
= reverse ? FRAME_FOREGROUND_PIXEL (f) : FRAME_BACKGROUND_PIXEL (f);
}
void
IT_set_frame_parameters (f, alist)
struct frame *f;
Lisp_Object alist;
{
Lisp_Object tail;
int length = XINT (Flength (alist));
int i, j;
Lisp_Object *parms
= (Lisp_Object *) alloca (length * sizeof (Lisp_Object));
Lisp_Object *values
= (Lisp_Object *) alloca (length * sizeof (Lisp_Object));
/* Do we have to reverse the foreground and background colors? */
int reverse = EQ (Fcdr (Fassq (Qreverse, f->param_alist)), Qt);
int was_reverse = reverse;
int redraw = 0, fg_set = 0, bg_set = 0;
unsigned long orig_fg;
unsigned long orig_bg;
/* If we are creating a new frame, begin with the original screen colors
used for the initial frame. */
if (alist == Vdefault_frame_alist
&& initial_screen_colors[0] != -1 && initial_screen_colors[1] != -1)
{
FRAME_FOREGROUND_PIXEL (f) = initial_screen_colors[0];
FRAME_BACKGROUND_PIXEL (f) = initial_screen_colors[1];
}
orig_fg = FRAME_FOREGROUND_PIXEL (f);
orig_bg = FRAME_BACKGROUND_PIXEL (f);
/* Extract parm names and values into those vectors. */
i = 0;
for (tail = alist; CONSP (tail); tail = Fcdr (tail))
{
Lisp_Object elt;
elt = Fcar (tail);
parms[i] = Fcar (elt);
CHECK_SYMBOL (parms[i], 1);
values[i] = Fcdr (elt);
i++;
}
j = i;
for (i = 0; i < j; i++)
{
Lisp_Object prop = parms[i];
Lisp_Object val = values[i];
if (EQ (prop, Qreverse))
reverse = EQ (val, Qt);
}
if (termscript && reverse && !was_reverse)
fprintf (termscript, "<INVERSE-VIDEO>\n");
/* Now process the alist elements in reverse of specified order. */
for (i--; i >= 0; i--)
{
Lisp_Object prop = parms[i];
Lisp_Object val = values[i];
if (EQ (prop, Qforeground_color))
{
unsigned long new_color = load_color (f, NULL, val, reverse
? LFACE_BACKGROUND_INDEX
: LFACE_FOREGROUND_INDEX);
if (new_color != FACE_TTY_DEFAULT_COLOR
&& new_color != FACE_TTY_DEFAULT_FG_COLOR
&& new_color != FACE_TTY_DEFAULT_BG_COLOR)
{
if (reverse)
/* FIXME: should the fore-/background of the default
face change here as well? */
FRAME_BACKGROUND_PIXEL (f) = new_color;
else
FRAME_FOREGROUND_PIXEL (f) = new_color;
redraw = 1;
fg_set = 1;
if (termscript)
fprintf (termscript, "<FGCOLOR %lu>\n", new_color);
}
}
else if (EQ (prop, Qbackground_color))
{
unsigned long new_color = load_color (f, NULL, val, reverse
? LFACE_FOREGROUND_INDEX
: LFACE_BACKGROUND_INDEX);
if (new_color != FACE_TTY_DEFAULT_COLOR
&& new_color != FACE_TTY_DEFAULT_FG_COLOR
&& new_color != FACE_TTY_DEFAULT_BG_COLOR)
{
if (reverse)
FRAME_FOREGROUND_PIXEL (f) = new_color;
else
FRAME_BACKGROUND_PIXEL (f) = new_color;
redraw = 1;
bg_set = 1;
if (termscript)
fprintf (termscript, "<BGCOLOR %lu>\n", new_color);
}
}
else if (EQ (prop, Qtitle))
{
x_set_title (f, val);
if (termscript)
fprintf (termscript, "<TITLE: %s>\n", XSTRING (val)->data);
}
else if (EQ (prop, Qcursor_type))
{
IT_set_cursor_type (f, val);
if (termscript)
fprintf (termscript, "<CTYPE: %s>\n",
EQ (val, Qbar) || CONSP (val) && EQ (XCAR (val), Qbar)
? "bar" : "box");
}
store_frame_param (f, prop, val);
}
/* If they specified "reverse", but not the colors, we need to swap
the current frame colors. */
if (reverse && !was_reverse)
{
if (!fg_set)
{
FRAME_BACKGROUND_PIXEL (f) = orig_fg;
redraw = 1;
}
if (!bg_set)
{
FRAME_FOREGROUND_PIXEL (f) = orig_bg;
redraw = 1;
}
}
if (redraw)
{
face_change_count++; /* forces xdisp.c to recompute basic faces */
if (f == SELECTED_FRAME())
redraw_frame (f);
}
}
extern void init_frame_faces (FRAME_PTR);
#endif /* !HAVE_X_WINDOWS */
/* Do we need the internal terminal? */
void
internal_terminal_init ()
{
char *term = getenv ("TERM");
char *colors;
struct frame *sf = SELECTED_FRAME();
#ifdef HAVE_X_WINDOWS
if (!inhibit_window_system)
return;
#endif
internal_terminal
= (!noninteractive) && term && !strcmp (term, "internal");
if (getenv ("EMACSTEST"))
termscript = fopen (getenv ("EMACSTEST"), "wt");
#ifndef HAVE_X_WINDOWS
if (!internal_terminal || inhibit_window_system)
{
sf->output_method = output_termcap;
return;
}
Vwindow_system = intern ("pc");
Vwindow_system_version = make_number (1);
sf->output_method = output_msdos_raw;
/* If Emacs was dumped on DOS/V machine, forget the stale VRAM address. */
screen_old_address = 0;
/* Forget the stale screen colors as well. */
initial_screen_colors[0] = initial_screen_colors[1] = -1;
bzero (&the_only_x_display, sizeof the_only_x_display);
the_only_x_display.background_pixel = 7; /* White */
the_only_x_display.foreground_pixel = 0; /* Black */
bright_bg ();
colors = getenv ("EMACSCOLORS");
if (colors && strlen (colors) >= 2)
{
/* The colors use 4 bits each (we enable bright background). */
if (isdigit (colors[0]))
colors[0] -= '0';
else if (isxdigit (colors[0]))
colors[0] -= (isupper (colors[0]) ? 'A' : 'a') - 10;
if (colors[0] >= 0 && colors[0] < 16)
the_only_x_display.foreground_pixel = colors[0];
if (isdigit (colors[1]))
colors[1] -= '0';
else if (isxdigit (colors[1]))
colors[1] -= (isupper (colors[1]) ? 'A' : 'a') - 10;
if (colors[1] >= 0 && colors[1] < 16)
the_only_x_display.background_pixel = colors[1];
}
the_only_x_display.line_height = 1;
the_only_x_display.font = (XFontStruct *)1; /* must *not* be zero */
the_only_x_display.display_info.mouse_face_mouse_frame = NULL;
the_only_x_display.display_info.mouse_face_deferred_gc = 0;
the_only_x_display.display_info.mouse_face_beg_row =
the_only_x_display.display_info.mouse_face_beg_col = -1;
the_only_x_display.display_info.mouse_face_end_row =
the_only_x_display.display_info.mouse_face_end_col = -1;
the_only_x_display.display_info.mouse_face_face_id = DEFAULT_FACE_ID;
the_only_x_display.display_info.mouse_face_window = Qnil;
the_only_x_display.display_info.mouse_face_mouse_x =
the_only_x_display.display_info.mouse_face_mouse_y = 0;
the_only_x_display.display_info.mouse_face_defer = 0;
init_frame_faces (sf);
ring_bell_hook = IT_ring_bell;
insert_glyphs_hook = IT_insert_glyphs;
delete_glyphs_hook = IT_delete_glyphs;
write_glyphs_hook = IT_write_glyphs;
cursor_to_hook = raw_cursor_to_hook = IT_cursor_to;
clear_to_end_hook = IT_clear_to_end;
clear_end_of_line_hook = IT_clear_end_of_line;
clear_frame_hook = IT_clear_screen;
change_line_highlight_hook = IT_change_line_highlight;
update_begin_hook = IT_update_begin;
update_end_hook = IT_update_end;
reassert_line_highlight_hook = IT_reassert_line_highlight;
frame_up_to_date_hook = IT_frame_up_to_date;
/* These hooks are called by term.c without being checked. */
set_terminal_modes_hook = IT_set_terminal_modes;
reset_terminal_modes_hook = IT_reset_terminal_modes;
set_terminal_window_hook = IT_set_terminal_window;
char_ins_del_ok = 0;
#endif
}
dos_get_saved_screen (screen, rows, cols)
char **screen;
int *rows;
int *cols;
{
#ifndef HAVE_X_WINDOWS
*screen = startup_screen_buffer;
*cols = startup_screen_size_X;
*rows = startup_screen_size_Y;
return *screen != (char *)0;
#else
return 0;
#endif
}
#ifndef HAVE_X_WINDOWS
/* We are not X, but we can emulate it well enough for our needs... */
void
check_x (void)
{
if (! FRAME_MSDOS_P (SELECTED_FRAME()))
error ("Not running under a window system");
}
#endif
/* ----------------------- Keyboard control ----------------------
*
* Keymaps reflect the following keyboard layout:
*
* 0 1 2 3 4 5 6 7 8 9 10 11 12 BS
* TAB 15 16 17 18 19 20 21 22 23 24 25 26 (41)
* CLOK 30 31 32 33 34 35 36 37 38 39 40 (41) RET
* SH () 45 46 47 48 49 50 51 52 53 54 SHIFT
* SPACE
*/
#define Ignore 0x0000
#define Normal 0x0000 /* normal key - alt changes scan-code */
#define FctKey 0x1000 /* func key if c == 0, else c */
#define Special 0x2000 /* func key even if c != 0 */
#define ModFct 0x3000 /* special if mod-keys, else 'c' */
#define Map 0x4000 /* alt scan-code, map to unshift/shift key */
#define KeyPad 0x5000 /* map to insert/kp-0 depending on c == 0xe0 */
#define Grey 0x6000 /* Grey keypad key */
#define Alt 0x0100 /* alt scan-code */
#define Ctrl 0x0200 /* ctrl scan-code */
#define Shift 0x0400 /* shift scan-code */
static int extended_kbd; /* 101 (102) keyboard present. */
struct kbd_translate {
unsigned char sc;
unsigned char ch;
unsigned short code;
};
struct dos_keyboard_map
{
char *unshifted;
char *shifted;
char *alt_gr;
struct kbd_translate *translate_table;
};
static struct dos_keyboard_map us_keyboard = {
/* 0 1 2 3 4 5 */
/* 01234567890123456789012345678901234567890 12345678901234 */
"`1234567890-= qwertyuiop[] asdfghjkl;'\\ zxcvbnm,./ ",
/* 0123456789012345678901234567890123456789 012345678901234 */
"~!@#$%^&*()_+ QWERTYUIOP{} ASDFGHJKL:\"| ZXCVBNM<>? ",
0, /* no Alt-Gr key */
0 /* no translate table */
};
static struct dos_keyboard_map fr_keyboard = {
/* 0 1 2 3 4 5 */
/* 012 3456789012345678901234567890123456789012345678901234 */
"<EFBFBD>&<26>\",(-<2D>_<EFBFBD><5F>)= azertyuiop^$ qsdfghjklm<6C>* wxcvbnm;:! ",
/* 0123456789012345678901234567890123456789012345678901234 */
" 1234567890<39>+ AZERTYUIOP<4F><50> QSDFGHJKLM%<25> WXCVBN?./<2F> ",
/* 01234567 89012345678901234567890123456789012345678901234 */
" ~#{[|`\\^@]} <20> ",
0 /* no translate table */
};
/*
* Italian keyboard support, country code 39.
* '<' 56:3c*0000
* '>' 56:3e*0000
* added also {,},` as, respectively, AltGr-8, AltGr-9, AltGr-'
* Donated by Stefano Brozzi <brozzis@mag00.cedi.unipr.it>
*/
static struct kbd_translate it_kbd_translate_table[] = {
{ 0x56, 0x3c, Normal | 13 },
{ 0x56, 0x3e, Normal | 27 },
{ 0, 0, 0 }
};
static struct dos_keyboard_map it_keyboard = {
/* 0 1 2 3 4 5 */
/* 0 123456789012345678901234567890123456789012345678901234 */
"\\1234567890'<27>< qwertyuiop<6F>+> asdfghjkl<6B><6C><EFBFBD> zxcvbnm,.- ",
/* 01 23456789012345678901234567890123456789012345678901234 */
"|!\"<EFBFBD>$%&/()=?^> QWERTYUIOP<4F>* ASDFGHJKL<4B><4C><EFBFBD> ZXCVBNM;:_ ",
/* 0123456789012345678901234567890123456789012345678901234 */
" {}~` [] @# ",
it_kbd_translate_table
};
static struct dos_keyboard_map dk_keyboard = {
/* 0 1 2 3 4 5 */
/* 0123456789012345678901234567890123456789012345678901234 */
"<EFBFBD>1234567890+| qwertyuiop<6F>~ asdfghjkl<6B><6C>' zxcvbnm,.- ",
/* 01 23456789012345678901234567890123456789012345678901234 */
"<EFBFBD>!\"#$%&/()=?` QWERTYUIOP<4F>^ ASDFGHJKL<4B><4C>* ZXCVBNM;:_ ",
/* 0123456789012345678901234567890123456789012345678901234 */
" @<40>$ {[]} | ",
0 /* no translate table */
};
static struct kbd_translate jp_kbd_translate_table[] = {
{ 0x73, 0x5c, Normal | 0 },
{ 0x73, 0x5f, Normal | 0 },
{ 0x73, 0x1c, Map | 0 },
{ 0x7d, 0x5c, Normal | 13 },
{ 0x7d, 0x7c, Normal | 13 },
{ 0x7d, 0x1c, Map | 13 },
{ 0, 0, 0 }
};
static struct dos_keyboard_map jp_keyboard = {
/* 0 1 2 3 4 5 */
/* 0123456789012 345678901234567890123456789012345678901234 */
"\\1234567890-^\\ qwertyuiop@[ asdfghjkl;:] zxcvbnm,./ ",
/* 01 23456789012345678901234567890123456789012345678901234 */
"_!\"#$%&'()~=~| QWERTYUIOP`{ ASDFGHJKL+*} ZXCVBNM<>? ",
0, /* no Alt-Gr key */
jp_kbd_translate_table
};
static struct keyboard_layout_list
{
int country_code;
struct dos_keyboard_map *keyboard_map;
} keyboard_layout_list[] =
{
1, &us_keyboard,
33, &fr_keyboard,
39, &it_keyboard,
45, &dk_keyboard,
81, &jp_keyboard
};
static struct dos_keyboard_map *keyboard;
static int keyboard_map_all;
static int international_keyboard;
int
dos_set_keyboard (code, always)
int code;
int always;
{
int i;
_go32_dpmi_registers regs;
/* See if Keyb.Com is installed (for international keyboard support).
Note: calling Int 2Fh via int86 wedges the DOS box on some versions
of Windows 9X! So don't do that! */
regs.x.ax = 0xad80;
regs.x.ss = regs.x.sp = regs.x.flags = 0;
_go32_dpmi_simulate_int (0x2f, &regs);
if (regs.h.al == 0xff)
international_keyboard = 1;
/* Initialize to US settings, for countries that don't have their own. */
keyboard = keyboard_layout_list[0].keyboard_map;
keyboard_map_all = always;
dos_keyboard_layout = 1;
for (i = 0; i < (sizeof (keyboard_layout_list)/sizeof (struct keyboard_layout_list)); i++)
if (code == keyboard_layout_list[i].country_code)
{
keyboard = keyboard_layout_list[i].keyboard_map;
keyboard_map_all = always;
dos_keyboard_layout = code;
return 1;
}
return 0;
}
static struct
{
unsigned char char_code; /* normal code */
unsigned char meta_code; /* M- code */
unsigned char keypad_code; /* keypad code */
unsigned char editkey_code; /* edit key */
} keypad_translate_map[] = {
'0', '0', 0xb0, /* kp-0 */ 0x63, /* insert */
'1', '1', 0xb1, /* kp-1 */ 0x57, /* end */
'2', '2', 0xb2, /* kp-2 */ 0x54, /* down */
'3', '3', 0xb3, /* kp-3 */ 0x56, /* next */
'4', '4', 0xb4, /* kp-4 */ 0x51, /* left */
'5', '5', 0xb5, /* kp-5 */ 0xb5, /* kp-5 */
'6', '6', 0xb6, /* kp-6 */ 0x53, /* right */
'7', '7', 0xb7, /* kp-7 */ 0x50, /* home */
'8', '8', 0xb8, /* kp-8 */ 0x52, /* up */
'9', '9', 0xb9, /* kp-9 */ 0x55, /* prior */
'.', '-', 0xae, /* kp-decimal */ 0xff /* delete */
};
static struct
{
unsigned char char_code; /* normal code */
unsigned char keypad_code; /* keypad code */
} grey_key_translate_map[] = {
'/', 0xaf, /* kp-decimal */
'*', 0xaa, /* kp-multiply */
'-', 0xad, /* kp-subtract */
'+', 0xab, /* kp-add */
'\r', 0x8d /* kp-enter */
};
static unsigned short
ibmpc_translate_map[] =
{
/* --------------- 00 to 0f --------------- */
Normal | 0xff, /* Ctrl Break + Alt-NNN */
Alt | ModFct | 0x1b, /* Escape */
Normal | 1, /* '1' */
Normal | 2, /* '2' */
Normal | 3, /* '3' */
Normal | 4, /* '4' */
Normal | 5, /* '5' */
Normal | 6, /* '6' */
Normal | 7, /* '7' */
Normal | 8, /* '8' */
Normal | 9, /* '9' */
Normal | 10, /* '0' */
Normal | 11, /* '-' */
Normal | 12, /* '=' */
Special | 0x08, /* Backspace */
ModFct | 0x74, /* Tab/Backtab */
/* --------------- 10 to 1f --------------- */
Map | 15, /* 'q' */
Map | 16, /* 'w' */
Map | 17, /* 'e' */
Map | 18, /* 'r' */
Map | 19, /* 't' */
Map | 20, /* 'y' */
Map | 21, /* 'u' */
Map | 22, /* 'i' */
Map | 23, /* 'o' */
Map | 24, /* 'p' */
Map | 25, /* '[' */
Map | 26, /* ']' */
ModFct | 0x0d, /* Return */
Ignore, /* Ctrl */
Map | 30, /* 'a' */
Map | 31, /* 's' */
/* --------------- 20 to 2f --------------- */
Map | 32, /* 'd' */
Map | 33, /* 'f' */
Map | 34, /* 'g' */
Map | 35, /* 'h' */
Map | 36, /* 'j' */
Map | 37, /* 'k' */
Map | 38, /* 'l' */
Map | 39, /* ';' */
Map | 40, /* '\'' */
Map | 0, /* '`' */
Ignore, /* Left shift */
Map | 41, /* '\\' */
Map | 45, /* 'z' */
Map | 46, /* 'x' */
Map | 47, /* 'c' */
Map | 48, /* 'v' */
/* --------------- 30 to 3f --------------- */
Map | 49, /* 'b' */
Map | 50, /* 'n' */
Map | 51, /* 'm' */
Map | 52, /* ',' */
Map | 53, /* '.' */
Map | 54, /* '/' */
Ignore, /* Right shift */
Grey | 1, /* Grey * */
Ignore, /* Alt */
Normal | 55, /* ' ' */
Ignore, /* Caps Lock */
FctKey | 0xbe, /* F1 */
FctKey | 0xbf, /* F2 */
FctKey | 0xc0, /* F3 */
FctKey | 0xc1, /* F4 */
FctKey | 0xc2, /* F5 */
/* --------------- 40 to 4f --------------- */
FctKey | 0xc3, /* F6 */
FctKey | 0xc4, /* F7 */
FctKey | 0xc5, /* F8 */
FctKey | 0xc6, /* F9 */
FctKey | 0xc7, /* F10 */
Ignore, /* Num Lock */
Ignore, /* Scroll Lock */
KeyPad | 7, /* Home */
KeyPad | 8, /* Up */
KeyPad | 9, /* Page Up */
Grey | 2, /* Grey - */
KeyPad | 4, /* Left */
KeyPad | 5, /* Keypad 5 */
KeyPad | 6, /* Right */
Grey | 3, /* Grey + */
KeyPad | 1, /* End */
/* --------------- 50 to 5f --------------- */
KeyPad | 2, /* Down */
KeyPad | 3, /* Page Down */
KeyPad | 0, /* Insert */
KeyPad | 10, /* Delete */
Shift | FctKey | 0xbe, /* (Shift) F1 */
Shift | FctKey | 0xbf, /* (Shift) F2 */
Shift | FctKey | 0xc0, /* (Shift) F3 */
Shift | FctKey | 0xc1, /* (Shift) F4 */
Shift | FctKey | 0xc2, /* (Shift) F5 */
Shift | FctKey | 0xc3, /* (Shift) F6 */
Shift | FctKey | 0xc4, /* (Shift) F7 */
Shift | FctKey | 0xc5, /* (Shift) F8 */
Shift | FctKey | 0xc6, /* (Shift) F9 */
Shift | FctKey | 0xc7, /* (Shift) F10 */
Ctrl | FctKey | 0xbe, /* (Ctrl) F1 */
Ctrl | FctKey | 0xbf, /* (Ctrl) F2 */
/* --------------- 60 to 6f --------------- */
Ctrl | FctKey | 0xc0, /* (Ctrl) F3 */
Ctrl | FctKey | 0xc1, /* (Ctrl) F4 */
Ctrl | FctKey | 0xc2, /* (Ctrl) F5 */
Ctrl | FctKey | 0xc3, /* (Ctrl) F6 */
Ctrl | FctKey | 0xc4, /* (Ctrl) F7 */
Ctrl | FctKey | 0xc5, /* (Ctrl) F8 */
Ctrl | FctKey | 0xc6, /* (Ctrl) F9 */
Ctrl | FctKey | 0xc7, /* (Ctrl) F10 */
Alt | FctKey | 0xbe, /* (Alt) F1 */
Alt | FctKey | 0xbf, /* (Alt) F2 */
Alt | FctKey | 0xc0, /* (Alt) F3 */
Alt | FctKey | 0xc1, /* (Alt) F4 */
Alt | FctKey | 0xc2, /* (Alt) F5 */
Alt | FctKey | 0xc3, /* (Alt) F6 */
Alt | FctKey | 0xc4, /* (Alt) F7 */
Alt | FctKey | 0xc5, /* (Alt) F8 */
/* --------------- 70 to 7f --------------- */
Alt | FctKey | 0xc6, /* (Alt) F9 */
Alt | FctKey | 0xc7, /* (Alt) F10 */
Ctrl | FctKey | 0x6d, /* (Ctrl) Sys Rq */
Ctrl | KeyPad | 4, /* (Ctrl) Left */
Ctrl | KeyPad | 6, /* (Ctrl) Right */
Ctrl | KeyPad | 1, /* (Ctrl) End */
Ctrl | KeyPad | 3, /* (Ctrl) Page Down */
Ctrl | KeyPad | 7, /* (Ctrl) Home */
Alt | Map | 1, /* '1' */
Alt | Map | 2, /* '2' */
Alt | Map | 3, /* '3' */
Alt | Map | 4, /* '4' */
Alt | Map | 5, /* '5' */
Alt | Map | 6, /* '6' */
Alt | Map | 7, /* '7' */
Alt | Map | 8, /* '8' */
/* --------------- 80 to 8f --------------- */
Alt | Map | 9, /* '9' */
Alt | Map | 10, /* '0' */
Alt | Map | 11, /* '-' */
Alt | Map | 12, /* '=' */
Ctrl | KeyPad | 9, /* (Ctrl) Page Up */
FctKey | 0xc8, /* F11 */
FctKey | 0xc9, /* F12 */
Shift | FctKey | 0xc8, /* (Shift) F11 */
Shift | FctKey | 0xc9, /* (Shift) F12 */
Ctrl | FctKey | 0xc8, /* (Ctrl) F11 */
Ctrl | FctKey | 0xc9, /* (Ctrl) F12 */
Alt | FctKey | 0xc8, /* (Alt) F11 */
Alt | FctKey | 0xc9, /* (Alt) F12 */
Ctrl | KeyPad | 8, /* (Ctrl) Up */
Ctrl | Grey | 2, /* (Ctrl) Grey - */
Ctrl | KeyPad | 5, /* (Ctrl) Keypad 5 */
/* --------------- 90 to 9f --------------- */
Ctrl | Grey | 3, /* (Ctrl) Grey + */
Ctrl | KeyPad | 2, /* (Ctrl) Down */
Ctrl | KeyPad | 0, /* (Ctrl) Insert */
Ctrl | KeyPad | 10, /* (Ctrl) Delete */
Ctrl | FctKey | 0x09, /* (Ctrl) Tab */
Ctrl | Grey | 0, /* (Ctrl) Grey / */
Ctrl | Grey | 1, /* (Ctrl) Grey * */
Alt | FctKey | 0x50, /* (Alt) Home */
Alt | FctKey | 0x52, /* (Alt) Up */
Alt | FctKey | 0x55, /* (Alt) Page Up */
Ignore, /* NO KEY */
Alt | FctKey | 0x51, /* (Alt) Left */
Ignore, /* NO KEY */
Alt | FctKey | 0x53, /* (Alt) Right */
Ignore, /* NO KEY */
Alt | FctKey | 0x57, /* (Alt) End */
/* --------------- a0 to af --------------- */
Alt | KeyPad | 2, /* (Alt) Down */
Alt | KeyPad | 3, /* (Alt) Page Down */
Alt | KeyPad | 0, /* (Alt) Insert */
Alt | KeyPad | 10, /* (Alt) Delete */
Alt | Grey | 0, /* (Alt) Grey / */
Alt | FctKey | 0x09, /* (Alt) Tab */
Alt | Grey | 4 /* (Alt) Keypad Enter */
};
/* These bit-positions corresponds to values returned by BIOS */
#define SHIFT_P 0x0003 /* two bits! */
#define CTRL_P 0x0004
#define ALT_P 0x0008
#define SCRLOCK_P 0x0010
#define NUMLOCK_P 0x0020
#define CAPSLOCK_P 0x0040
#define ALT_GR_P 0x0800
#define SUPER_P 0x4000 /* pseudo */
#define HYPER_P 0x8000 /* pseudo */
static int
dos_get_modifiers (keymask)
int *keymask;
{
union REGS regs;
int mask;
int modifiers = 0;
/* Calculate modifier bits */
regs.h.ah = extended_kbd ? 0x12 : 0x02;
int86 (0x16, &regs, &regs);
if (!extended_kbd)
{
mask = regs.h.al & (SHIFT_P | CTRL_P | ALT_P |
SCRLOCK_P | NUMLOCK_P | CAPSLOCK_P);
}
else
{
mask = regs.h.al & (SHIFT_P |
SCRLOCK_P | NUMLOCK_P | CAPSLOCK_P);
/* Do not break international keyboard support. */
/* When Keyb.Com is loaded, the right Alt key is */
/* used for accessing characters like { and } */
if (regs.h.ah & 2) /* Left ALT pressed ? */
mask |= ALT_P;
if ((regs.h.ah & 8) != 0) /* Right ALT pressed ? */
{
mask |= ALT_GR_P;
if (dos_hyper_key == 1)
{
mask |= HYPER_P;
modifiers |= hyper_modifier;
}
else if (dos_super_key == 1)
{
mask |= SUPER_P;
modifiers |= super_modifier;
}
else if (!international_keyboard)
{
/* If Keyb.Com is NOT installed, let Right Alt behave
like the Left Alt. */
mask &= ~ALT_GR_P;
mask |= ALT_P;
}
}
if (regs.h.ah & 1) /* Left CTRL pressed ? */
mask |= CTRL_P;
if (regs.h.ah & 4) /* Right CTRL pressed ? */
{
if (dos_hyper_key == 2)
{
mask |= HYPER_P;
modifiers |= hyper_modifier;
}
else if (dos_super_key == 2)
{
mask |= SUPER_P;
modifiers |= super_modifier;
}
else
mask |= CTRL_P;
}
}
if (mask & SHIFT_P)
modifiers |= shift_modifier;
if (mask & CTRL_P)
modifiers |= ctrl_modifier;
if (mask & ALT_P)
modifiers |= meta_modifier;
if (keymask)
*keymask = mask;
return modifiers;
}
#define NUM_RECENT_DOSKEYS (100)
int recent_doskeys_index; /* Index for storing next element into recent_doskeys */
int total_doskeys; /* Total number of elements stored into recent_doskeys */
Lisp_Object recent_doskeys; /* A vector, holding the last 100 keystrokes */
DEFUN ("recent-doskeys", Frecent_doskeys, Srecent_doskeys, 0, 0, 0,
"Return vector of last 100 keyboard input values seen in dos_rawgetc.\n\
Each input key receives two values in this vector: first the ASCII code,\n\
and then the scan code.")
()
{
Lisp_Object *keys = XVECTOR (recent_doskeys)->contents;
Lisp_Object val;
if (total_doskeys < NUM_RECENT_DOSKEYS)
return Fvector (total_doskeys, keys);
else
{
val = Fvector (NUM_RECENT_DOSKEYS, keys);
bcopy (keys + recent_doskeys_index,
XVECTOR (val)->contents,
(NUM_RECENT_DOSKEYS - recent_doskeys_index) * sizeof (Lisp_Object));
bcopy (keys,
XVECTOR (val)->contents + NUM_RECENT_DOSKEYS - recent_doskeys_index,
recent_doskeys_index * sizeof (Lisp_Object));
return val;
}
}
/* Get a char from keyboard. Function keys are put into the event queue. */
extern void kbd_buffer_store_event (struct input_event *);
static int
dos_rawgetc ()
{
struct input_event event;
union REGS regs;
#ifndef HAVE_X_WINDOWS
/* Maybe put the cursor where it should be. */
IT_cmgoto (SELECTED_FRAME());
#endif
/* 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, &regs, &regs),
(regs.x.flags & 0x40) == 0)
{
union REGS regs;
register unsigned char c;
int sc, code = -1, mask, kp_mode;
int modifiers;
regs.h.ah = extended_kbd ? 0x10 : 0x00;
int86 (0x16, &regs, &regs);
c = regs.h.al;
sc = regs.h.ah;
total_doskeys += 2;
XVECTOR (recent_doskeys)->contents[recent_doskeys_index++]
= make_number (c);
if (recent_doskeys_index == NUM_RECENT_DOSKEYS)
recent_doskeys_index = 0;
XVECTOR (recent_doskeys)->contents[recent_doskeys_index++]
= make_number (sc);
if (recent_doskeys_index == NUM_RECENT_DOSKEYS)
recent_doskeys_index = 0;
modifiers = dos_get_modifiers (&mask);
#ifndef HAVE_X_WINDOWS
if (!NILP (Vdos_display_scancodes))
{
char buf[11];
sprintf (buf, "%02x:%02x*%04x",
(unsigned) (sc&0xff), (unsigned) c, mask);
dos_direct_output (screen_size_Y - 2, screen_size_X - 12, buf, 10);
}
#endif
if (sc == 0xe0)
{
switch (c)
{
case 10: /* Ctrl Grey Enter */
code = Ctrl | Grey | 4;
break;
case 13: /* Grey Enter */
code = Grey | 4;
break;
case '/': /* Grey / */
code = Grey | 0;
break;
default:
continue;
};
c = 0;
}
else
{
/* Try the keyboard-private translation table first. */
if (keyboard->translate_table)
{
struct kbd_translate *p = keyboard->translate_table;
while (p->sc)
{
if (p->sc == sc && p->ch == c)
{
code = p->code;
break;
}
p++;
}
}
/* If the private table didn't translate it, use the general
one. */
if (code == -1)
{
if (sc >= (sizeof (ibmpc_translate_map) / sizeof (short)))
continue;
if ((code = ibmpc_translate_map[sc]) == Ignore)
continue;
}
}
if (c == 0)
{
/* We only look at the keyboard Ctrl/Shift/Alt keys when
Emacs is ready to read a key. Therefore, if they press
`Alt-x' when Emacs is busy, by the time we get to
`dos_get_modifiers', they might have already released the
Alt key, and Emacs gets just `x', which is BAD.
However, for keys with the `Map' property set, the ASCII
code returns zero iff Alt is pressed. So, when we DON'T
have to support international_keyboard, we don't have to
distinguish between the left and right Alt keys, and we
can set the META modifier for any keys with the `Map'
property if they return zero ASCII code (c = 0). */
if ( (code & Alt)
|| ( (code & 0xf000) == Map && !international_keyboard))
modifiers |= meta_modifier;
if (code & Ctrl)
modifiers |= ctrl_modifier;
if (code & Shift)
modifiers |= shift_modifier;
}
switch (code & 0xf000)
{
case ModFct:
if (c && !(mask & (SHIFT_P | ALT_P | CTRL_P | HYPER_P | SUPER_P)))
return c;
c = 0; /* Special */
case FctKey:
if (c != 0)
return c;
case Special:
code |= 0xff00;
break;
case Normal:
if (sc == 0)
{
if (c == 0) /* ctrl-break */
continue;
return c; /* ALT-nnn */
}
if (!keyboard_map_all)
{
if (c != ' ')
return c;
code = c;
break;
}
case Map:
if (c && !(mask & ALT_P) && !((mask & SHIFT_P) && (mask & CTRL_P)))
if (!keyboard_map_all)
return c;
code &= 0xff;
if (mask & ALT_P && code <= 10 && code > 0 && dos_keypad_mode & 0x200)
mask |= SHIFT_P; /* ALT-1 => M-! etc. */
if (mask & SHIFT_P)
{
code = keyboard->shifted[code];
mask -= SHIFT_P;
modifiers &= ~shift_modifier;
}
else
if ((mask & ALT_GR_P) && keyboard->alt_gr && keyboard->alt_gr[code] != ' ')
code = keyboard->alt_gr[code];
else
code = keyboard->unshifted[code];
break;
case KeyPad:
code &= 0xff;
if (c == 0xe0) /* edit key */
kp_mode = 3;
else
if ((mask & (NUMLOCK_P|CTRL_P|SHIFT_P|ALT_P)) == NUMLOCK_P) /* numlock on */
kp_mode = dos_keypad_mode & 0x03;
else
kp_mode = (dos_keypad_mode >> 4) & 0x03;
switch (kp_mode)
{
case 0:
if (code == 10 && dos_decimal_point)
return dos_decimal_point;
return keypad_translate_map[code].char_code;
case 1:
code = 0xff00 | keypad_translate_map[code].keypad_code;
break;
case 2:
code = keypad_translate_map[code].meta_code;
modifiers = meta_modifier;
break;
case 3:
code = 0xff00 | keypad_translate_map[code].editkey_code;
break;
}
break;
case Grey:
code &= 0xff;
kp_mode = ((mask & (NUMLOCK_P|CTRL_P|SHIFT_P|ALT_P)) == NUMLOCK_P) ? 0x04 : 0x40;
if (dos_keypad_mode & kp_mode)
code = 0xff00 | grey_key_translate_map[code].keypad_code;
else
code = grey_key_translate_map[code].char_code;
break;
}
make_event:
if (code == 0)
continue;
if (code >= 0x100)
event.kind = non_ascii_keystroke;
else
event.kind = ascii_keystroke;
event.code = code;
event.modifiers = modifiers;
event.frame_or_window = selected_frame;
event.timestamp = event_timestamp ();
kbd_buffer_store_event (&event);
}
if (have_mouse > 0 && !mouse_preempted)
{
int but, press, x, y, ok;
int mouse_prev_x = mouse_last_x, mouse_prev_y = mouse_last_y;
/* Check for mouse movement *before* buttons. */
mouse_check_moved ();
/* If the mouse moved from the spot of its last sighting, we
might need to update mouse highlight. */
if (mouse_last_x != mouse_prev_x || mouse_last_y != mouse_prev_y)
{
previous_help_echo = help_echo;
help_echo = Qnil;
IT_note_mouse_highlight (SELECTED_FRAME(),
mouse_last_x, mouse_last_y);
/* If the contents of the global variable help_echo has
changed, generate a HELP_EVENT. */
if (STRINGP (help_echo) || STRINGP (previous_help_echo))
{
event.kind = HELP_EVENT;
event.frame_or_window = Fcons (selected_frame, help_echo);
event.timestamp = event_timestamp ();
kbd_buffer_store_event (&event);
}
}
for (but = 0; but < NUM_MOUSE_BUTTONS; but++)
for (press = 0; press < 2; press++)
{
int button_num = but;
if (press)
ok = mouse_pressed (but, &x, &y);
else
ok = mouse_released (but, &x, &y);
if (ok)
{
/* Allow a simultaneous press/release of Mouse-1 and
Mouse-2 to simulate Mouse-3 on two-button mice. */
if (mouse_button_count == 2 && but < 2)
{
int x2, y2; /* don't clobber original coordinates */
/* If only one button is pressed, wait 100 msec and
check again. This way, Speedy Gonzales isn't
punished, while the slow get their chance. */
if (press && mouse_pressed (1-but, &x2, &y2)
|| !press && mouse_released (1-but, &x2, &y2))
button_num = 2;
else
{
delay (100);
if (press && mouse_pressed (1-but, &x2, &y2)
|| !press && mouse_released (1-but, &x2, &y2))
button_num = 2;
}
}
event.kind = mouse_click;
event.code = button_num;
event.modifiers = dos_get_modifiers (0)
| (press ? down_modifier : up_modifier);
event.x = x;
event.y = y;
event.frame_or_window = selected_frame;
event.timestamp = event_timestamp ();
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 ();
}
#ifndef HAVE_X_WINDOWS
/* 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;
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;
}
/* Simulation of X's menus. Nothing too fancy here -- just make it work
for now.
Actually, I don't know the meaning of all the parameters of the functions
here -- I only know how they are called by xmenu.c. I could of course
grab the nearest Xlib manual (down the hall, second-to-last door on the
left), but I don't think it's worth the effort. */
static char *menu_help_message, *prev_menu_help_message;
static XMenu *
IT_menu_create ()
{
XMenu *menu;
menu = (XMenu *) xmalloc (sizeof (XMenu));
menu->allocated = menu->count = menu->panecount = menu->width = 0;
return menu;
}
/* Allocate some (more) memory for MENU ensuring that there is room for one
for item. */
static void
IT_menu_make_room (XMenu *menu)
{
if (menu->allocated == 0)
{
int count = menu->allocated = 10;
menu->text = (char **) xmalloc (count * sizeof (char *));
menu->submenu = (XMenu **) xmalloc (count * sizeof (XMenu *));
menu->panenumber = (int *) xmalloc (count * sizeof (int));
menu->help_text = (char **) xmalloc (count * sizeof (char *));
}
else if (menu->allocated == menu->count)
{
int count = menu->allocated = menu->allocated + 10;
menu->text
= (char **) xrealloc (menu->text, count * sizeof (char *));
menu->submenu
= (XMenu **) xrealloc (menu->submenu, count * sizeof (XMenu *));
menu->panenumber
= (int *) xrealloc (menu->panenumber, count * sizeof (int));
menu->help_text
= (char **) xrealloc (menu->help_text, count * sizeof (char *));
}
}
/* Search the given menu structure for a given pane number. */
static XMenu *
IT_menu_search_pane (XMenu *menu, int pane)
{
int i;
XMenu *try;
for (i = 0; i < menu->count; i++)
if (menu->submenu[i])
{
if (pane == menu->panenumber[i])
return menu->submenu[i];
if ((try = IT_menu_search_pane (menu->submenu[i], pane)))
return try;
}
return (XMenu *) 0;
}
/* Determine how much screen space a given menu needs. */
static void
IT_menu_calc_size (XMenu *menu, int *width, int *height)
{
int i, h2, w2, maxsubwidth, maxheight;
maxsubwidth = 0;
maxheight = menu->count;
for (i = 0; i < menu->count; i++)
{
if (menu->submenu[i])
{
IT_menu_calc_size (menu->submenu[i], &w2, &h2);
if (w2 > maxsubwidth) maxsubwidth = w2;
if (i + h2 > maxheight) maxheight = i + h2;
}
}
*width = menu->width + maxsubwidth;
*height = maxheight;
}
/* Display MENU at (X,Y) using FACES. */
static void
IT_menu_display (XMenu *menu, int y, int x, int *faces, int disp_help)
{
int i, j, face, width;
struct glyph *text, *p;
char *q;
int mx, my;
int enabled, mousehere;
int row, col;
struct frame *sf = SELECTED_FRAME();
menu_help_message = NULL;
width = menu->width;
text = (struct glyph *) xmalloc ((width + 2) * sizeof (struct glyph));
ScreenGetCursor (&row, &col);
mouse_get_xy (&mx, &my);
IT_update_begin (sf);
for (i = 0; i < menu->count; i++)
{
int max_width = width + 2;
IT_cursor_to (y + i, x);
enabled
= (!menu->submenu[i] && menu->panenumber[i]) || (menu->submenu[i]);
mousehere = (y + i == my && x <= mx && mx < x + width + 2);
face = faces[enabled + mousehere * 2];
if (disp_help && enabled + mousehere * 2 >= 2)
menu_help_message = menu->help_text[i];
p = text;
SET_CHAR_GLYPH (*p, ' ', face, 0);
p++;
for (j = 0, q = menu->text[i]; *q; j++)
{
if (*q > 26)
{
SET_CHAR_GLYPH (*p, *q++, face, 0);
p++;
}
else /* make '^x' */
{
SET_CHAR_GLYPH (*p, '^', face, 0);
p++;
j++;
SET_CHAR_GLYPH (*p, *q++ + 64, face, 0);
p++;
}
}
/* Don't let the menu text overflow into the next screen row. */
if (x + max_width > screen_size_X)
{
max_width = screen_size_X - x;
text[max_width - 1].u.ch = '$'; /* indicate it's truncated */
}
for (; j < max_width - 2; j++, p++)
SET_CHAR_GLYPH (*p, ' ', face, 0);
SET_CHAR_GLYPH (*p, menu->submenu[i] ? 16 : ' ', face, 0);
p++;
IT_write_glyphs (text, max_width);
}
IT_update_end (sf);
IT_cursor_to (row, col);
xfree (text);
}
/* --------------------------- X Menu emulation ---------------------- */
/* Report availability of menus. */
int
have_menus_p ()
{
return 1;
}
/* Create a brand new menu structure. */
XMenu *
XMenuCreate (Display *foo1, Window foo2, char *foo3)
{
return IT_menu_create ();
}
/* Create a new pane and place it on the outer-most level. It is not
clear that it should be placed out there, but I don't know what else
to do. */
int
XMenuAddPane (Display *foo, XMenu *menu, char *txt, int enable)
{
int len;
char *p;
if (!enable)
abort ();
IT_menu_make_room (menu);
menu->submenu[menu->count] = IT_menu_create ();
menu->text[menu->count] = txt;
menu->panenumber[menu->count] = ++menu->panecount;
menu->help_text[menu->count] = NULL;
menu->count++;
/* Adjust length for possible control characters (which will
be written as ^x). */
for (len = strlen (txt), p = txt; *p; p++)
if (*p < 27)
len++;
if (len > menu->width)
menu->width = len;
return menu->panecount;
}
/* Create a new item in a menu pane. */
int
XMenuAddSelection (Display *bar, XMenu *menu, int pane,
int foo, char *txt, int enable, char *help_text)
{
int len;
char *p;
if (pane)
if (!(menu = IT_menu_search_pane (menu, pane)))
return XM_FAILURE;
IT_menu_make_room (menu);
menu->submenu[menu->count] = (XMenu *) 0;
menu->text[menu->count] = txt;
menu->panenumber[menu->count] = enable;
menu->help_text[menu->count] = help_text;
menu->count++;
/* Adjust length for possible control characters (which will
be written as ^x). */
for (len = strlen (txt), p = txt; *p; p++)
if (*p < 27)
len++;
if (len > menu->width)
menu->width = len;
return XM_SUCCESS;
}
/* Decide where the menu would be placed if requested at (X,Y). */
void
XMenuLocate (Display *foo0, XMenu *menu, int foo1, int foo2, int x, int y,
int *ulx, int *uly, int *width, int *height)
{
IT_menu_calc_size (menu, width, height);
*ulx = x + 1;
*uly = y;
*width += 2;
}
struct IT_menu_state
{
void *screen_behind;
XMenu *menu;
int pane;
int x, y;
};
/* Display menu, wait for user's response, and return that response. */
int
XMenuActivate (Display *foo, XMenu *menu, int *pane, int *selidx,
int x0, int y0, unsigned ButtonMask, char **txt,
void (*help_callback)(char *))
{
struct IT_menu_state *state;
int statecount;
int x, y, i, b;
int screensize;
int faces[4];
Lisp_Object selectface;
int leave, result, onepane;
int title_faces[4]; /* face to display the menu title */
int buffers_num_deleted = 0;
struct frame *sf = SELECTED_FRAME();
/* Just in case we got here without a mouse present... */
if (have_mouse <= 0)
return XM_IA_SELECT;
/* Don't allow non-positive x0 and y0, lest the menu will wrap
around the display. */
if (x0 <= 0)
x0 = 1;
if (y0 <= 0)
y0 = 1;
/* We will process all the mouse events directly, so we had
better prevented dos_rawgetc from stealing them from us. */
mouse_preempted++;
state = alloca (menu->panecount * sizeof (struct IT_menu_state));
screensize = screen_size * 2;
faces[0]
= lookup_derived_face (sf, intern ("msdos-menu-passive-face"),
0, DEFAULT_FACE_ID);
faces[1]
= lookup_derived_face (sf, intern ("msdos-menu-active-face"),
0, DEFAULT_FACE_ID);
selectface = intern ("msdos-menu-select-face");
faces[2] = lookup_derived_face (sf, selectface,
0, faces[0]);
faces[3] = lookup_derived_face (sf, selectface,
0, faces[1]);
/* Make sure the menu title is always displayed with
`msdos-menu-active-face', no matter where the mouse pointer is. */
for (i = 0; i < 4; i++)
title_faces[i] = faces[3];
statecount = 1;
/* Don't let the title for the "Buffers" popup menu include a
digit (which is ugly).
This is a terrible kludge, but I think the "Buffers" case is
the only one where the title includes a number, so it doesn't
seem to be necessary to make this more general. */
if (strncmp (menu->text[0], "Buffers 1", 9) == 0)
{
menu->text[0][7] = '\0';
buffers_num_deleted = 1;
}
state[0].menu = menu;
mouse_off ();
ScreenRetrieve (state[0].screen_behind = xmalloc (screensize));
/* Turn off the cursor. Otherwise it shows through the menu
panes, which is ugly. */
IT_display_cursor (0);
/* Display the menu title. */
IT_menu_display (menu, y0 - 1, x0 - 1, title_faces, 0);
if (buffers_num_deleted)
menu->text[0][7] = ' ';
if ((onepane = menu->count == 1 && menu->submenu[0]))
{
menu->width = menu->submenu[0]->width;
state[0].menu = menu->submenu[0];
}
else
{
state[0].menu = menu;
}
state[0].x = x0 - 1;
state[0].y = y0;
state[0].pane = onepane;
mouse_last_x = -1; /* A hack that forces display. */
leave = 0;
while (!leave)
{
if (!mouse_visible) mouse_on ();
mouse_check_moved ();
if (sf->mouse_moved)
{
sf->mouse_moved = 0;
result = XM_IA_SELECT;
mouse_get_xy (&x, &y);
for (i = 0; i < statecount; i++)
if (state[i].x <= x && x < state[i].x + state[i].menu->width + 2)
{
int dy = y - state[i].y;
if (0 <= dy && dy < state[i].menu->count)
{
if (!state[i].menu->submenu[dy])
if (state[i].menu->panenumber[dy])
result = XM_SUCCESS;
else
result = XM_IA_SELECT;
*pane = state[i].pane - 1;
*selidx = dy;
/* We hit some part of a menu, so drop extra menus that
have been opened. That does not include an open and
active submenu. */
if (i != statecount - 2
|| state[i].menu->submenu[dy] != state[i+1].menu)
while (i != statecount - 1)
{
statecount--;
mouse_off ();
ScreenUpdate (state[statecount].screen_behind);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (0, screen_size);
xfree (state[statecount].screen_behind);
}
if (i == statecount - 1 && state[i].menu->submenu[dy])
{
IT_menu_display (state[i].menu,
state[i].y,
state[i].x,
faces, 1);
state[statecount].menu = state[i].menu->submenu[dy];
state[statecount].pane = state[i].menu->panenumber[dy];
mouse_off ();
ScreenRetrieve (state[statecount].screen_behind
= xmalloc (screensize));
state[statecount].x
= state[i].x + state[i].menu->width + 2;
state[statecount].y = y;
statecount++;
}
}
}
IT_menu_display (state[statecount - 1].menu,
state[statecount - 1].y,
state[statecount - 1].x,
faces, 1);
}
else
{
if ((menu_help_message || prev_menu_help_message)
&& menu_help_message != prev_menu_help_message)
{
help_callback (menu_help_message);
IT_display_cursor (0);
prev_menu_help_message = menu_help_message;
}
/* We are busy-waiting for the mouse to move, so let's be nice
to other Windows applications by releasing our time slice. */
__dpmi_yield ();
}
for (b = 0; b < mouse_button_count && !leave; b++)
{
/* Only leave if user both pressed and released the mouse, and in
that order. This avoids popping down the menu pane unless
the user is really done with it. */
if (mouse_pressed (b, &x, &y))
{
while (mouse_button_depressed (b, &x, &y))
__dpmi_yield ();
leave = 1;
}
(void) mouse_released (b, &x, &y);
}
}
mouse_off ();
ScreenUpdate (state[0].screen_behind);
if (screen_virtual_segment)
dosv_refresh_virtual_screen (0, screen_size);
message (0);
while (statecount--)
xfree (state[statecount].screen_behind);
IT_display_cursor (1); /* turn cursor back on */
/* Clean up any mouse events that are waiting inside Emacs event queue.
These events are likely to be generated before the menu was even
displayed, probably because the user pressed and released the button
(which invoked the menu) too quickly. If we don't remove these events,
Emacs will process them after we return and surprise the user. */
discard_mouse_events ();
/* Allow mouse events generation by dos_rawgetc. */
mouse_preempted--;
return result;
}
/* Dispose of a menu. */
void
XMenuDestroy (Display *foo, XMenu *menu)
{
int i;
if (menu->allocated)
{
for (i = 0; i < menu->count; i++)
if (menu->submenu[i])
XMenuDestroy (foo, menu->submenu[i]);
xfree (menu->text);
xfree (menu->submenu);
xfree (menu->panenumber);
xfree (menu->help_text);
}
xfree (menu);
menu_help_message = prev_menu_help_message = NULL;
}
int
x_pixel_width (struct frame *f)
{
return FRAME_WIDTH (f);
}
int
x_pixel_height (struct frame *f)
{
return FRAME_HEIGHT (f);
}
#endif /* !HAVE_X_WINDOWS */
/* ----------------------- DOS / UNIX conversion --------------------- */
void msdos_downcase_filename (unsigned char *);
/* Destructively turn backslashes into slashes. */
void
dostounix_filename (p)
register char *p;
{
msdos_downcase_filename (p);
while (*p)
{
if (*p == '\\')
*p = '/';
p++;
}
}
/* Destructively turn slashes into backslashes. */
void
unixtodos_filename (p)
register char *p;
{
if (p[1] == ':' && *p >= 'A' && *p <= 'Z')
{
*p += 'a' - 'A';
p += 2;
}
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;
{
char in_path[4], *p = in_path;
int e = errno;
/* Generate "X:." (when drive is X) or "." (when drive is 0). */
if (drive != 0)
{
*p++ = drive + 'A' - 1;
*p++ = ':';
}
*p++ = '.';
*p = '\0';
errno = 0;
_fixpath (in_path, dst);
/* _fixpath can set errno to ENOSYS on non-LFN systems because
it queries the LFN support, so ignore that error. */
if ((errno && errno != ENOSYS) || *dst == '\0')
return 0;
msdos_downcase_filename (dst);
errno = e;
return 1;
}
/* 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;
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;
}
#if defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 0
/* In DJGPP v2.0, library `write' can call `malloc', which might
cause relocation of the buffer whose address we get in ADDR.
Here is a version of `write' that avoids calling `malloc',
to serve us until such time as the library is fixed.
Actually, what we define here is called `__write', because
`write' is a stub that just jmp's to `__write' (to be
POSIXLY-correct with respect to the global name-space). */
#include <io.h> /* for _write */
#include <libc/dosio.h> /* for __file_handle_modes[] */
static char xbuf[64 * 1024]; /* DOS cannot write more in one chunk */
#define XBUF_END (xbuf + sizeof (xbuf) - 1)
int
__write (int handle, const void *buffer, size_t count)
{
if (count == 0)
return 0;
if(__file_handle_modes[handle] & O_BINARY)
return _write (handle, buffer, count);
else
{
char *xbp = xbuf;
const char *bp = buffer;
int total_written = 0;
int nmoved = 0, ncr = 0;
while (count)
{
/* The next test makes sure there's space for at least 2 more
characters in xbuf[], so both CR and LF can be put there. */
if (xbp < XBUF_END)
{
if (*bp == '\n')
{
ncr++;
*xbp++ = '\r';
}
*xbp++ = *bp++;
nmoved++;
count--;
}
if (xbp >= XBUF_END || !count)
{
size_t to_write = nmoved + ncr;
int written = _write (handle, xbuf, to_write);
if (written == -1)
return -1;
else
total_written += nmoved; /* CRs aren't counted in ret value */
/* If some, but not all were written (disk full?), return
an estimate of the total written bytes not counting CRs. */
if (written < to_write)
return total_written - (to_write - written) * nmoved/to_write;
nmoved = 0;
ncr = 0;
xbp = xbuf;
}
}
return total_written;
}
}
/* A low-level file-renaming function which works around Windows 95 bug.
This is pulled directly out of DJGPP v2.01 library sources, and only
used when you compile with DJGPP v2.0. */
#include <io.h>
int _rename(const char *old, const char *new)
{
__dpmi_regs r;
int olen = strlen(old) + 1;
int i;
int use_lfn = _USE_LFN;
char tempfile[FILENAME_MAX];
const char *orig = old;
int lfn_fd = -1;
r.x.dx = __tb_offset;
r.x.di = __tb_offset + olen;
r.x.ds = r.x.es = __tb_segment;
if (use_lfn)
{
/* Windows 95 bug: for some filenames, when you rename
file -> file~ (as in Emacs, to leave a backup), the
short 8+3 alias doesn't change, which effectively
makes OLD and NEW the same file. We must rename
through a temporary file to work around this. */
char *pbase = 0, *p;
static char try_char[] = "abcdefghijklmnopqrstuvwxyz012345789";
int idx = sizeof(try_char) - 1;
/* Generate a temporary name. Can't use `tmpnam', since $TMPDIR
might point to another drive, which will fail the DOS call. */
strcpy(tempfile, old);
for (p = tempfile; *p; p++) /* ensure temporary is on the same drive */
if (*p == '/' || *p == '\\' || *p == ':')
pbase = p;
if (pbase)
pbase++;
else
pbase = tempfile;
strcpy(pbase, "X$$djren$$.$$temp$$");
do
{
if (idx <= 0)
return -1;
*pbase = try_char[--idx];
} while (_chmod(tempfile, 0) != -1);
r.x.ax = 0x7156;
_put_path2(tempfile, olen);
_put_path(old);
__dpmi_int(0x21, &r);
if (r.x.flags & 1)
{
errno = __doserr_to_errno(r.x.ax);
return -1;
}
/* Now create a file with the original name. This will
ensure that NEW will always have a 8+3 alias
different from that of OLD. (Seems to be required
when NameNumericTail in the Registry is set to 0.) */
lfn_fd = _creat(old, 0);
olen = strlen(tempfile) + 1;
old = tempfile;
r.x.di = __tb_offset + olen;
}
for (i=0; i<2; i++)
{
if(use_lfn)
r.x.ax = 0x7156;
else
r.h.ah = 0x56;
_put_path2(new, olen);
_put_path(old);
__dpmi_int(0x21, &r);
if(r.x.flags & 1)
{
if (r.x.ax == 5 && i == 0) /* access denied */
remove(new); /* and try again */
else
{
errno = __doserr_to_errno(r.x.ax);
/* Restore to original name if we renamed it to temporary. */
if (use_lfn)
{
if (lfn_fd != -1)
{
_close (lfn_fd);
remove (orig);
}
_put_path2(orig, olen);
_put_path(tempfile);
r.x.ax = 0x7156;
__dpmi_int(0x21, &r);
}
return -1;
}
}
else
break;
}
/* Success. Delete the file possibly created to work
around the Windows 95 bug. */
if (lfn_fd != -1)
return (_close (lfn_fd) == 0) ? remove (orig) : -1;
return 0;
}
#endif /* __DJGPP__ == 2 && __DJGPP_MINOR__ == 0 */
DEFUN ("msdos-long-file-names", Fmsdos_long_file_names, Smsdos_long_file_names,
0, 0, 0,
"Return non-nil if long file names are supported on MSDOS.")
()
{
return (_USE_LFN ? Qt : Qnil);
}
/* Convert alphabetic characters in a filename to lower-case. */
void
msdos_downcase_filename (p)
register unsigned char *p;
{
/* Always lower-case drive letters a-z, even if the filesystem
preserves case in filenames.
This is so MSDOS filenames could be compared by string comparison
functions that are case-sensitive. Even case-preserving filesystems
do not distinguish case in drive letters. */
if (p[1] == ':' && *p >= 'A' && *p <= 'Z')
{
*p += 'a' - 'A';
p += 2;
}
/* Under LFN we expect to get pathnames in their true case. */
if (NILP (Fmsdos_long_file_names ()))
for ( ; *p; p++)
if (*p >= 'A' && *p <= 'Z')
*p += 'a' - 'A';
}
DEFUN ("msdos-downcase-filename", Fmsdos_downcase_filename, Smsdos_downcase_filename,
1, 1, 0,
"Convert alphabetic characters in FILENAME to lower case and return that.\n\
When long filenames are supported, doesn't change FILENAME.\n\
If FILENAME is not a string, returns nil.\n\
The argument object is never altered--the value is a copy.")
(filename)
Lisp_Object filename;
{
Lisp_Object tem;
if (! STRINGP (filename))
return Qnil;
tem = Fcopy_sequence (filename);
msdos_downcase_filename (XSTRING (tem)->data);
return tem;
}
/* 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;
static const char * const tempdirs[] = {
"$TMPDIR", "$TEMP", "$TMP", "c:/"
};
int i;
const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]);
/* Make sure they have a usable $TMPDIR. Many Emacs functions use
temporary files and assume "/tmp" if $TMPDIR is unset, which
will break on DOS/Windows. Refuse to work if we cannot find
a directory, not even "c:/", usable for that purpose. */
for (i = 0; i < imax ; i++)
{
const char *tmp = tempdirs[i];
if (*tmp == '$')
tmp = getenv (tmp + 1);
/* Note that `access' can lie to us if the directory resides on a
read-only filesystem, like CD-ROM or a write-protected floppy.
The only way to be really sure is to actually create a file and
see if it succeeds. But I think that's too much to ask. */
if (tmp && access (tmp, D_OK) == 0)
{
setenv ("TMPDIR", tmp, 1);
break;
}
}
if (i >= imax)
cmd_error_internal
(Fcons (Qerror,
Fcons (build_string ("no usable temporary directories found!!"),
Qnil)),
"While setting TMPDIR: ");
/* Note the startup time, so we know not to clear the screen if we
exit immediately; see IT_reset_terminal_modes.
(Yes, I know `clock' returns zero the first time it's called, but
I do this anyway, in case some wiseguy changes that at some point.) */
startup_time = clock ();
/* Find our root from argv[0]. Assuming argv[0] is, say,
"c:/emacs/bin/emacs.exe" our root will be "c:/emacs". */
root = alloca (MAXPATHLEN + 20);
_fixpath (argv[0], root);
msdos_downcase_filename (root);
len = strlen (root);
while (len > 0 && root[len] != '/' && root[len] != ':')
len--;
root[len] = '\0';
if (len > 4
&& (strcmp (root + len - 4, "/bin") == 0
|| strcmp (root + len - 4, "/src") == 0)) /* under a debugger */
root[len - 4] = '\0';
else
strcpy (root, "c:/emacs"); /* let's be defensive */
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);
#ifdef HAVE_X_WINDOWS
/* Emacs expects DISPLAY to be set. */
setenv ("DISPLAY", "unix:0.0", 0);
#endif
/* 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);
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);
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. */
if (!getenv ("TZ"))
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", "JST-09", 0);
break;
case 90: /* Turkey */
case 358: /* Finland */
setenv ("TZ", "EET-02", 0);
break;
case 972: /* Israel */
/* This is an approximation. (For exact rules, use the
`zoneinfo/israel' file which comes with DJGPP, but you need
to install it in `/usr/share/zoneinfo/' directory first.) */
setenv ("TZ", "IST-02IDT-03,M4.1.6/00:00,M9.5.6/01:00", 0);
break;
}
tzset ();
}
static int break_stat; /* BREAK check mode status. */
static int stdin_stat; /* stdin IOCTL status. */
#if __DJGPP__ < 2
/* 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);
}
}
#endif /* __DJGPP__ < 2 */
/* 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;
static int first_time = 1;
break_stat = getcbrk ();
setcbrk (0);
#if __DJGPP__ < 2
install_ctrl_break_check ();
#endif
if (first_time)
{
inregs.h.ah = 0xc0;
int86 (0x15, &inregs, &outregs);
extended_kbd = (!outregs.x.cflag) && (outregs.h.ah == 0);
have_mouse = 0;
if (internal_terminal
#ifdef HAVE_X_WINDOWS
&& inhibit_window_system
#endif
)
{
inregs.x.ax = 0x0021;
int86 (0x33, &inregs, &outregs);
have_mouse = (outregs.x.ax & 0xffff) == 0xffff;
if (!have_mouse)
{
/* 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. */
inregs.x.ax = 0x0000;
int86 (0x33, &inregs, &outregs);
have_mouse = (outregs.x.ax & 0xffff) == 0xffff;
}
if (have_mouse)
{
have_mouse = 1; /* enable mouse */
mouse_visible = 0;
if (outregs.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 ();
}
#ifndef HAVE_X_WINDOWS
#if __DJGPP__ >= 2
/* Save the cursor shape used outside Emacs. */
outside_cursor = _farpeekw (_dos_ds, 0x460);
#endif
#endif
}
first_time = 0;
#if __DJGPP__ >= 2
stdin_stat = setmode (fileno (stdin), O_BINARY);
return (stdin_stat != -1);
}
else
return (setmode (fileno (stdin), O_BINARY) != -1);
#else /* __DJGPP__ < 2 */
}
/* I think it is wrong to overwrite `stdin_stat' every time
but the first one this function is called, but I don't
want to change the way it used to work in v1.x.--EZ */
inregs.x.ax = 0x4400; /* Get IOCTL status. */
inregs.x.bx = 0x00; /* 0 = stdin. */
intdos (&inregs, &outregs);
stdin_stat = outregs.h.dl;
inregs.x.dx = stdin_stat | 0x0020; /* raw mode */
inregs.x.ax = 0x4401; /* Set IOCTL status */
intdos (&inregs, &outregs);
return !outregs.x.cflag;
#endif /* __DJGPP__ < 2 */
}
/* Restore status of standard input and Ctrl-C checking. */
int
dos_ttcooked ()
{
union REGS inregs, outregs;
setcbrk (break_stat);
mouse_off ();
#if __DJGPP__ >= 2
#ifndef HAVE_X_WINDOWS
/* Restore the cursor shape we found on startup. */
if (outside_cursor)
{
inregs.h.ah = 1;
inregs.x.cx = outside_cursor;
int86 (0x10, &inregs, &outregs);
}
#endif
return (setmode (fileno (stdin), stdin_stat) != -1);
#else /* not __DJGPP__ >= 2 */
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;
#endif /* not __DJGPP__ >= 2 */
}
/* Run command as specified by ARGV in directory DIR.
The command is run with input from TEMPIN, output to
file TEMPOUT and stderr to TEMPERR. */
int
run_msdos_command (argv, working_dir, tempin, tempout, temperr, envv)
unsigned char **argv;
const char *working_dir;
int tempin, tempout, temperr;
char **envv;
{
char *saveargv1, *saveargv2, *lowcase_argv0, *pa, *pl;
char oldwd[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
int msshell, result = -1;
int inbak, outbak, errbak;
int x, y;
Lisp_Object cmd;
/* Get current directory as MSDOS cwd is not per-process. */
getwd (oldwd);
/* If argv[0] is the shell, it might come in any lettercase.
Since `Fmember' is case-sensitive, we need to downcase
argv[0], even if we are on case-preserving filesystems. */
lowcase_argv0 = alloca (strlen (argv[0]) + 1);
for (pa = argv[0], pl = lowcase_argv0; *pa; pl++)
{
*pl = *pa++;
if (*pl >= 'A' && *pl <= 'Z')
*pl += 'a' - 'A';
}
*pl = '\0';
cmd = Ffile_name_nondirectory (build_string (lowcase_argv0));
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++;
}
}
chdir (working_dir);
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. */
if (have_mouse > 0)
mouse_get_xy (&x, &y);
dos_ttcooked (); /* do it here while 0 = stdin */
dup2 (tempin, 0);
dup2 (tempout, 1);
dup2 (temperr, 2);
#if __DJGPP__ > 1
if (msshell && !argv[3])
{
/* MS-DOS native shells are too restrictive. For starters, they
cannot grok commands longer than 126 characters. In DJGPP v2
and later, `system' is much smarter, so we'll call it instead. */
const char *cmnd;
/* A shell gets a single argument--its full command
line--whose original was saved in `saveargv2'. */
/* Don't let them pass empty command lines to `system', since
with some shells it will try to invoke an interactive shell,
which will hang Emacs. */
for (cmnd = saveargv2; *cmnd && isspace (*cmnd); cmnd++)
;
if (*cmnd)
{
extern char **environ;
int save_system_flags = __system_flags;
/* Request the most powerful version of `system'. We need
all the help we can get to avoid calling stock DOS shells. */
__system_flags = (__system_redirect
| __system_use_shell
| __system_allow_multiple_cmds
| __system_allow_long_cmds
| __system_handle_null_commands
| __system_emulate_chdir);
environ = envv;
result = system (cmnd);
__system_flags = save_system_flags;
}
else
result = 0; /* emulate Unixy shell behavior with empty cmd line */
}
else
#endif /* __DJGPP__ > 1 */
result = spawnve (P_WAIT, argv[0], argv, envv);
dup2 (inbak, 0);
dup2 (outbak, 1);
dup2 (errbak, 2);
emacs_close (inbak);
emacs_close (outbak);
emacs_close (errbak);
dos_ttraw ();
if (have_mouse > 0)
{
mouse_init ();
mouse_moveto (x, y);
}
/* Some programs might change the meaning of the highest bit of the
text attribute byte, so we get blinking characters instead of the
bright background colors. Restore that. */
bright_bg ();
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);
}
#if __DJGPP__ < 2
/* ------------------------- Compatibility functions -------------------
* gethostname
* gettimeofday
*/
/* 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;
}
/* When time zones are set from Ms-Dos too many 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. That is
accomplished by aliasing tzset to init_gettimeofday. */
static struct tm time_rec;
int
gettimeofday (struct timeval *tp, struct timezone *tzp)
{
if (tp)
{
struct time t;
struct tm tm;
gettime (&t);
if (t.ti_hour < time_rec.tm_hour) /* midnight wrap */
{
struct date d;
getdate (&d);
time_rec.tm_year = d.da_year - 1900;
time_rec.tm_mon = d.da_mon - 1;
time_rec.tm_mday = d.da_day;
}
time_rec.tm_hour = t.ti_hour;
time_rec.tm_min = t.ti_min;
time_rec.tm_sec = t.ti_sec;
tm = time_rec;
tm.tm_gmtoff = dos_timezone_offset;
tp->tv_sec = mktime (&tm); /* may modify tm */
tp->tv_usec = t.ti_hund * (1000000 / 100);
}
/* Ignore tzp; it's obsolescent. */
return 0;
}
#endif /* __DJGPP__ < 2 */
/*
* A list of unimplemented functions that we silently ignore.
*/
#if __DJGPP__ < 2
unsigned alarm (s) unsigned s; {}
fork () { return 0; }
int kill (x, y) int x, y; { return -1; }
nice (p) int p; {}
void volatile pause () {}
sigsetmask (x) int x; { return 0; }
sigblock (mask) int mask; { return 0; }
#endif
void request_sigio (void) {}
setpgrp () {return 0; }
setpriority (x,y,z) int x,y,z; { return 0; }
void unrequest_sigio (void) {}
#if __DJGPP__ > 1
#ifdef POSIX_SIGNALS
/* Augment DJGPP library POSIX signal functions. This is needed
as of DJGPP v2.01, but might be in the library in later releases. */
#include <libc/bss.h>
/* A counter to know when to re-initialize the static sets. */
static int sigprocmask_count = -1;
/* Which signals are currently blocked (initially none). */
static sigset_t current_mask;
/* Which signals are pending (initially none). */
static sigset_t pending_signals;
/* Previous handlers to restore when the blocked signals are unblocked. */
typedef void (*sighandler_t)(int);
static sighandler_t prev_handlers[320];
/* A signal handler which just records that a signal occured
(it will be raised later, if and when the signal is unblocked). */
static void
sig_suspender (signo)
int signo;
{
sigaddset (&pending_signals, signo);
}
int
sigprocmask (how, new_set, old_set)
int how;
const sigset_t *new_set;
sigset_t *old_set;
{
int signo;
sigset_t new_mask;
/* If called for the first time, initialize. */
if (sigprocmask_count != __bss_count)
{
sigprocmask_count = __bss_count;
sigemptyset (&pending_signals);
sigemptyset (&current_mask);
for (signo = 0; signo < 320; signo++)
prev_handlers[signo] = SIG_ERR;
}
if (old_set)
*old_set = current_mask;
if (new_set == 0)
return 0;
if (how != SIG_BLOCK && how != SIG_UNBLOCK && how != SIG_SETMASK)
{
errno = EINVAL;
return -1;
}
sigemptyset (&new_mask);
/* DJGPP supports upto 320 signals. */
for (signo = 0; signo < 320; signo++)
{
if (sigismember (&current_mask, signo))
sigaddset (&new_mask, signo);
else if (sigismember (new_set, signo) && how != SIG_UNBLOCK)
{
sigaddset (&new_mask, signo);
/* SIGKILL is silently ignored, as on other platforms. */
if (signo != SIGKILL && prev_handlers[signo] == SIG_ERR)
prev_handlers[signo] = signal (signo, sig_suspender);
}
if (( how == SIG_UNBLOCK
&& sigismember (&new_mask, signo)
&& sigismember (new_set, signo))
|| (how == SIG_SETMASK
&& sigismember (&new_mask, signo)
&& !sigismember (new_set, signo)))
{
sigdelset (&new_mask, signo);
if (prev_handlers[signo] != SIG_ERR)
{
signal (signo, prev_handlers[signo]);
prev_handlers[signo] = SIG_ERR;
}
if (sigismember (&pending_signals, signo))
{
sigdelset (&pending_signals, signo);
raise (signo);
}
}
}
current_mask = new_mask;
return 0;
}
#else /* not POSIX_SIGNALS */
sigsetmask (x) int x; { return 0; }
sigblock (mask) int mask; { return 0; }
#endif /* not POSIX_SIGNALS */
#endif /* __DJGPP__ > 1 */
#ifndef HAVE_SELECT
#include "sysselect.h"
#ifndef EMACS_TIME_ZERO_OR_NEG_P
#define EMACS_TIME_ZERO_OR_NEG_P(time) \
((long)(time).tv_sec < 0 \
|| ((time).tv_sec == 0 \
&& (long)(time).tv_usec <= 0))
#endif
/* This yields the rest of the current time slice to the task manager.
It should be called by any code which knows that it has nothing
useful to do except idle.
I don't use __dpmi_yield here, since versions of library before 2.02
called Int 2Fh/AX=1680h there in a way that would wedge the DOS box
on some versions of Windows 9X. */
void
dos_yield_time_slice (void)
{
_go32_dpmi_registers r;
r.x.ax = 0x1680;
r.x.ss = r.x.sp = r.x.flags = 0;
_go32_dpmi_simulate_int (0x2f, &r);
if (r.h.al == 0x80)
errno = ENOSYS;
}
/* Only event queue is checked. */
/* We don't have to call timer_check here
because wait_reading_process_input takes care of that. */
int
sys_select (nfds, rfds, wfds, efds, timeout)
int nfds;
SELECT_TYPE *rfds, *wfds, *efds;
EMACS_TIME *timeout;
{
int check_input;
struct time t;
check_input = 0;
if (rfds)
{
check_input = FD_ISSET (0, rfds);
FD_ZERO (rfds);
}
if (wfds)
FD_ZERO (wfds);
if (efds)
FD_ZERO (efds);
if (nfds != 1)
abort ();
/* If we are looking only for the terminal, with no timeout,
just read it and wait -- that's more efficient. */
if (!timeout)
{
while (!detect_input_pending ())
{
dos_yield_time_slice ();
}
}
else
{
EMACS_TIME clnow, cllast, cldiff;
gettime (&t);
EMACS_SET_SECS_USECS (cllast, t.ti_sec, t.ti_hund * 10000L);
while (!check_input || !detect_input_pending ())
{
gettime (&t);
EMACS_SET_SECS_USECS (clnow, t.ti_sec, t.ti_hund * 10000L);
EMACS_SUB_TIME (cldiff, clnow, cllast);
/* When seconds wrap around, we assume that no more than
1 minute passed since last `gettime'. */
if (EMACS_TIME_NEG_P (cldiff))
EMACS_SET_SECS (cldiff, EMACS_SECS (cldiff) + 60);
EMACS_SUB_TIME (*timeout, *timeout, cldiff);
/* Stop when timeout value crosses zero. */
if (EMACS_TIME_ZERO_OR_NEG_P (*timeout))
return 0;
cllast = clnow;
dos_yield_time_slice ();
}
}
FD_SET (0, rfds);
return 1;
}
#endif
/*
* Define overlaid functions:
*
* chdir -> sys_chdir
* tzset -> init_gettimeofday
* abort -> dos_abort
*/
#ifdef chdir
#undef chdir
extern int chdir ();
int
sys_chdir (path)
const char* path;
{
int len = strlen (path);
char *tmp = (char *)path;
if (*tmp && tmp[1] == ':')
{
if (getdisk () != tolower (tmp[0]) - 'a')
setdisk (tolower (tmp[0]) - 'a');
tmp += 2; /* strip drive: KFS 1995-07-06 */
len -= 2;
}
if (len > 1 && (tmp[len - 1] == '/'))
{
char *tmp1 = (char *) alloca (len + 1);
strcpy (tmp1, tmp);
tmp1[len - 1] = 0;
tmp = tmp1;
}
return chdir (tmp);
}
#endif
#ifdef tzset
#undef tzset
extern void tzset (void);
void
init_gettimeofday ()
{
time_t ltm, gtm;
struct tm *lstm;
tzset ();
ltm = gtm = time (NULL);
ltm = mktime (lstm = localtime (&ltm));
gtm = mktime (gmtime (&gtm));
time_rec.tm_hour = 99; /* force gettimeofday to get date */
time_rec.tm_isdst = lstm->tm_isdst;
dos_timezone_offset = time_rec.tm_gmtoff = (int)(gtm - ltm) / 60;
}
#endif
#ifdef abort
#undef abort
void
dos_abort (file, line)
char *file;
int line;
{
char buffer1[200], buffer2[400];
int i, j;
sprintf (buffer1, "<EMACS FATAL ERROR IN %s LINE %d>", file, line);
for (i = j = 0; buffer1[i]; i++) {
buffer2[j++] = buffer1[i];
buffer2[j++] = 0x70;
}
dosmemput (buffer2, j, (int)ScreenPrimary);
ScreenSetCursor (2, 0);
abort ();
}
#else
void
abort ()
{
dos_ttcooked ();
ScreenSetCursor (10, 0);
cputs ("\r\n\nEmacs aborted!\r\n");
#if __DJGPP__ > 1
#if __DJGPP__ == 2 && __DJGPP_MINOR__ < 2
if (screen_virtual_segment)
dosv_refresh_virtual_screen (2 * 10 * screen_size_X, 4 * screen_size_X);
/* Generate traceback, so we could tell whodunit. */
signal (SIGINT, SIG_DFL);
__asm__ __volatile__ ("movb $0x1b,%al;call ___djgpp_hw_exception");
#else /* __DJGPP_MINOR__ >= 2 */
raise (SIGABRT);
#endif /* __DJGPP_MINOR__ >= 2 */
#endif
exit (2);
}
#endif
/* The following variables are required so that cus-start.el won't
complain about unbound variables. */
#ifndef HAVE_X_WINDOWS
/* Search path for bitmap files (xfns.c). */
Lisp_Object Vx_bitmap_file_path;
int x_stretch_cursor_p;
#endif
#ifndef subprocesses
/* Nonzero means delete a process right away if it exits (process.c). */
static int delete_exited_processes;
#endif
syms_of_msdos ()
{
recent_doskeys = Fmake_vector (make_number (NUM_RECENT_DOSKEYS), Qnil);
staticpro (&recent_doskeys);
#ifndef HAVE_X_WINDOWS
staticpro (&help_echo);
help_echo = Qnil;
staticpro (&previous_help_echo);
previous_help_echo = Qnil;
DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path,
"List of directories to search for bitmap files for X.");
Vx_bitmap_file_path = decode_env_path ((char *) 0, ".");
DEFVAR_BOOL ("x-stretch-cursor", &x_stretch_cursor_p,
"*Non-nil means draw block cursor as wide as the glyph under it.\n\
For example, if a block cursor is over a tab, it will be drawn as\n\
wide as that tab on the display. (No effect on MS-DOS.)");
x_stretch_cursor_p = 0;
/* The following three are from xfns.c: */
Qbackground_color = intern ("background-color");
staticpro (&Qbackground_color);
Qforeground_color = intern ("foreground-color");
staticpro (&Qforeground_color);
Qbar = intern ("bar");
staticpro (&Qbar);
Qcursor_type = intern ("cursor-type");
staticpro (&Qcursor_type);
Qreverse = intern ("reverse");
staticpro (&Qreverse);
DEFVAR_LISP ("dos-unsupported-char-glyph", &Vdos_unsupported_char_glyph,
"*Glyph to display instead of chars not supported by current codepage.\n\
This variable is used only by MSDOS terminals.");
Vdos_unsupported_char_glyph = '\177';
#endif
#ifndef subprocesses
DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes,
"*Non-nil means delete processes immediately when they exit.\n\
nil means don't delete them until `list-processes' is run.");
delete_exited_processes = 0;
#endif
defsubr (&Srecent_doskeys);
defsubr (&Smsdos_long_file_names);
defsubr (&Smsdos_downcase_filename);
defsubr (&Smsdos_remember_default_colors);
}
#endif /* MSDOS */
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