-/* MS-DOS specific C utilities.
- Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+/* MS-DOS specific C utilities. -*- coding: raw-text -*-
+ Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#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 "dosfns.h"
#include "termopts.h"
#include "frame.h"
#include "window.h"
+#include "buffer.h"
+#include "commands.h"
#include <go32.h>
#include <pc.h>
#include <ctype.h>
#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
}
}
+static void
+mouse_get_xy (int *x, int *y)
+{
+ union REGS regs;
+
+ regs.x.ax = 0x0003;
+ int86 (0x33, ®s, ®s);
+ *x = regs.x.cx / 8;
+ *y = regs.x.dx / 8;
+}
+
void
mouse_moveto (x, y)
int x, y;
return (regs.x.bx != 0);
}
-static void
-mouse_get_xy (int *x, int *y)
+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, ®s, ®s);
- *x = regs.x.cx / 8;
- *y = regs.x.dx / 8;
+ 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
unsigned long *time;
{
int ix, iy;
- union REGS regs;
+ 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;
- regs.x.ax = 0x0003;
- int86 (0x33, ®s, ®s);
*f = selected_frame;
*bar_window = Qnil;
mouse_get_xy (&ix, &iy);
- selected_frame->mouse_moved = 0;
- *x = make_number (ix);
- *y = make_number (iy);
*time = event_timestamp ();
+ *x = make_number (mouse_last_x = ix);
+ *y = make_number (mouse_last_y = iy);
}
static void
mouse_init ()
{
union REGS regs;
+ int b;
if (termscript)
fprintf (termscript, "<M_INIT>");
regs.x.ax = 0x0021;
int86 (0x33, ®s, ®s);
+ /* 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);
/* This is never dereferenced. */
Display *x_current_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;
+
+#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; illegal values crash DOS/V */
+ return;
-#define SCREEN_SET_CURSOR() \
- if (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)
+ 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, ®s);
+}
+#endif
static
dos_direct_output (y, x, buf, len)
char *buf;
int len;
{
- int t = (int) ScreenPrimary + 2 * (x + y * screen_size_X);
-
+ 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
#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, ®s, ®s);
}
+/* 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, ®s, ®s);
+ }
+}
+
/* Set the screen dimensions so that it can show no less than
ROWS x COLS frame. */
/* 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,
mouse_off ();
}
-static
-IT_ring_bell ()
+static void
+IT_ring_bell (void)
{
if (visible_bell)
{
else
fp = intern_face (selected_frame, FRAME_COMPUTED_FACES (foo)[face]);
if (termscript)
- fprintf (termscript, "<FACE:%d:%d>", FACE_FOREGROUND (fp), FACE_BACKGROUND (fp));
+ fprintf (termscript, "<FACE %d: %d/%d>",
+ face, FACE_FOREGROUND (fp), FACE_BACKGROUND (fp));
screen_face = face;
ScreenAttrib = (FACE_BACKGROUND (fp) << 4) | FACE_FOREGROUND (fp);
}
-static
+static void
IT_write_glyphs (GLYPH *str, int len)
{
int newface;
int ch, l = len;
unsigned char *buf, *bp;
+ int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y);
if (len == 0) return;
}
mouse_off_maybe ();
- dosmemput (buf, 2 * len,
- (int)ScreenPrimary + 2 * (new_pos_X + screen_size_X * new_pos_Y));
+ dosmemput (buf, 2 * len, (int)ScreenPrimary + offset);
+ if (screen_virtual_segment)
+ dosv_refresh_virtual_screen (offset, len);
new_pos_X += len;
}
-static
-IT_clear_end_of_line (first_unused)
+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);
IT_set_face (0);
if (termscript)
}
mouse_off_maybe ();
- dosmemput (spaces, i,
- (int)ScreenPrimary + 2 * (new_pos_X + screen_size_X * new_pos_Y));
+ dosmemput (spaces, i, (int)ScreenPrimary + offset);
+ if (screen_virtual_segment)
+ dosv_refresh_virtual_screen (offset, i / 2);
}
-static
+static void
IT_clear_screen (void)
{
if (termscript)
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
+static void
IT_clear_to_end (void)
{
if (termscript)
}
}
-static
+static void
IT_cursor_to (int y, int x)
{
if (termscript)
new_pos_Y = y;
}
+static int cursor_cleared;
+
static
-IT_reassert_line_highlight (new, vpos)
- int new, vpos;
+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 = MODIFF == unchanged_modified;
+ static int previous_pos_X = -1;
+
+ /* 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;
+ }
+ }
+
+ 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;
IT_set_face (0); /* To possibly clear the highlighting. */
}
-static
-IT_change_line_highlight (new_highlight, vpos, first_unused_hpos)
+static void
+IT_change_line_highlight (int new_highlight, int vpos, int first_unused_hpos)
{
highlight = new_highlight;
IT_set_face (0); /* To possibly clear the highlighting. */
IT_clear_end_of_line (first_unused_hpos);
}
-static
-IT_update_begin ()
+static void
+IT_update_begin (struct frame *foo)
{
highlight = 0;
IT_set_face (0); /* To possibly clear the highlighting. */
screen_face = -1;
}
-static
-IT_update_end ()
-{
-}
-
-/* This was more or less copied from xterm.c
-
- Nowadays, the corresponding function under X is `x_set_menu_bar_lines_1'
- on xfns.c */
-
static void
-IT_set_menu_bar_lines (window, n)
- Lisp_Object window;
- int n;
+IT_update_end (struct frame *foo)
{
- struct window *w = XWINDOW (window);
-
- XSETFASTINT (w->last_modified, 0);
- XSETFASTINT (w->top, XFASTINT (w->top) + n);
- XSETFASTINT (w->height, XFASTINT (w->height) - n);
-
- /* Handle just the top child in a vertical split. */
- if (!NILP (w->vchild))
- IT_set_menu_bar_lines (w->vchild, n);
-
- /* Adjust all children in a horizontal split. */
- for (window = w->hchild; !NILP (window); window = w->next)
- {
- w = XWINDOW (window);
- IT_set_menu_bar_lines (window, n);
- }
}
-/* This was copied from xfns.c */
-
+/* set-window-configuration on window.c needs this. */
void
x_set_menu_bar_lines (f, value, oldval)
struct frame *f;
Lisp_Object value, oldval;
{
- int nlines;
- int olines = FRAME_MENU_BAR_LINES (f);
-
- /* Right now, menu bars don't work properly in minibuf-only frames;
- most of the commands try to apply themselves to the minibuffer
- frame itslef, and get an error because you can't switch buffers
- in or split the minibuffer window. */
- if (FRAME_MINIBUF_ONLY_P (f))
- return;
+ set_menu_bar_lines (f, value, oldval);
+}
- if (INTEGERP (value))
- nlines = XINT (value);
- else
- nlines = 0;
+/* This was copied from xfns.c */
- FRAME_MENU_BAR_LINES (f) = nlines;
- IT_set_menu_bar_lines (f->root_window, nlines - olines);
-}
+Lisp_Object Qbackground_color;
+Lisp_Object Qforeground_color;
+extern Lisp_Object Qtitle;
/* IT_set_terminal_modes is called when emacs is started,
resumed, and whenever the screen is redrawn! */
-static
+static void
IT_set_terminal_modes (void)
{
- char *colors;
- FRAME_PTR f;
- struct face *fp;
-
if (termscript)
fprintf (termscript, "\n<SET_TERM>");
highlight = 0;
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, ®s);
+
+ if (regs.x.es != es_value && 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);
+ screen_size_X, screen_size_Y);
bright_bg ();
}
/* IT_reset_terminal_modes is called when emacs is
suspended or killed. */
-static
+static void
IT_reset_terminal_modes (void)
{
int display_row_start = (int) ScreenPrimary;
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
ScreenAttrib = startup_screen_attrib;
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;
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;
}
term_setup_done = 0;
}
-static
-IT_set_terminal_window (void)
+static void
+IT_set_terminal_window (int foo)
{
}
Lisp_Object alist;
{
Lisp_Object tail;
+ int length = XINT (Flength (alist));
+ int i;
+ Lisp_Object *parms
+ = (Lisp_Object *) alloca (length * sizeof (Lisp_Object));
+ Lisp_Object *values
+ = (Lisp_Object *) alloca (length * sizeof (Lisp_Object));
int redraw;
extern unsigned long load_color ();
redraw = 0;
+
+ /* Extract parm names and values into those vectors. */
+ i = 0;
for (tail = alist; CONSP (tail); tail = Fcdr (tail))
{
- Lisp_Object elt, prop, val;
+ Lisp_Object elt;
elt = Fcar (tail);
- prop = Fcar (elt);
- val = Fcdr (elt);
- CHECK_SYMBOL (prop, 1);
+ parms[i] = Fcar (elt);
+ CHECK_SYMBOL (parms[i], 1);
+ values[i] = Fcdr (elt);
+ i++;
+ }
+
+
+ /* Now process them in reverse of specified order. */
+ for (i--; i >= 0; i--)
+ {
+ Lisp_Object prop = parms[i];
+ Lisp_Object val = values[i];
- if (EQ (prop, intern ("foreground-color")))
+ if (EQ (prop, Qforeground_color))
{
unsigned long new_color = load_color (f, val);
if (new_color != ~0)
FRAME_FOREGROUND_PIXEL (f) = new_color;
redraw = 1;
if (termscript)
- fprintf (termscript, "<FGCOLOR %d>\n", new_color);
+ fprintf (termscript, "<FGCOLOR %lu>\n", new_color);
}
}
- else if (EQ (prop, intern ("background-color")))
+ else if (EQ (prop, Qbackground_color))
{
unsigned long new_color = load_color (f, val);
if (new_color != ~0)
FRAME_BACKGROUND_PIXEL (f) = new_color;
redraw = 1;
if (termscript)
- fprintf (termscript, "<BGCOLOR %d>\n", new_color);
+ fprintf (termscript, "<BGCOLOR %lu>\n", new_color);
}
}
- else if (EQ (prop, intern ("menu-bar-lines")))
- x_set_menu_bar_lines (f, val, 0);
+ else if (EQ (prop, Qtitle))
+ {
+ x_set_title (f, val);
+ if (termscript)
+ fprintf (termscript, "<TITLE: %s>\n", XSTRING (val)->data);
+ }
+ else if (EQ (prop, intern ("reverse")) && EQ (val, Qt))
+ {
+ unsigned long fg = FRAME_FOREGROUND_PIXEL (f);
+
+ FRAME_FOREGROUND_PIXEL (f) = FRAME_BACKGROUND_PIXEL (f);
+ FRAME_BACKGROUND_PIXEL (f) = fg;
+ if (termscript)
+ fprintf (termscript, "<INVERSE-VIDEO>\n");
+ }
+ store_frame_param (f, prop, val);
+
}
if (redraw)
{
+ extern void recompute_basic_faces (FRAME_PTR);
+ extern void redraw_frame (FRAME_PTR);
+
recompute_basic_faces (f);
if (f == selected_frame)
redraw_frame (f);
}
}
+extern void init_frame_faces (FRAME_PTR);
+
#endif /* !HAVE_X_WINDOWS */
Vwindow_system = intern ("pc");
Vwindow_system_version = make_number (1);
-
+
+ /* If Emacs was dumped on DOS/V machine, forget the stale VRAM address. */
+ screen_old_address = 0;
+
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 */
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_cmgoto; /* position cursor when update is done */
/* These hooks are called by term.c without being checked. */
set_terminal_modes_hook = IT_set_terminal_modes;
*screen = startup_screen_buffer;
*cols = startup_screen_size_X;
*rows = startup_screen_size_Y;
- return 1;
+ return *screen != (char *)0;
#else
return 0;
#endif
" ~#{[|`\\^@]} Ï "
};
+/*
+ * 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 dos_keyboard_map it_keyboard = {
+/* 0 1 2 3 4 5 */
+/* 0 123456789012345678901234567890123456789012345678901234 */
+ "\\1234567890'\8d qwertyuiop\8a+ asdfghjkl\95\85\97 zxcvbnm,.- ",
+/* 01 23456789012345678901234567890123456789012345678901234 */
+ "|!\"\9c$%&/()=?^ QWERTYUIOP\82* ASDFGHJKL\87øõ ZXCVBNM;:_ ",
+/* 0123456789012345678901234567890123456789012345678901234 */
+ " {}~` [] @# "
+};
+
static struct dos_keyboard_map dk_keyboard = {
/* 0 1 2 3 4 5 */
/* 0123456789012345678901234567890123456789012345678901234 */
{
1, &us_keyboard,
33, &fr_keyboard,
+ 39, &it_keyboard,
45, &dk_keyboard
};
static struct dos_keyboard_map *keyboard;
static int keyboard_map_all;
+static int international_keyboard;
int
dos_set_keyboard (code, always)
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, ®s);
+ 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;
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 ? */
/* Get a char from keyboard. Function keys are put into the event queue. */
+extern void kbd_buffer_store_event (struct input_event *);
+static int mouse_preempted = 0; /* non-zero when XMenu gobbles mouse events */
+
static int
dos_rawgetc ()
{
union REGS regs;
#ifndef HAVE_X_WINDOWS
- SCREEN_SET_CURSOR ();
- if (!mouse_visible) mouse_on ();
+ /* 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),
if (c == 0)
{
- if (code & Alt)
+ /* 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;
kbd_buffer_store_event (&event);
}
- if (have_mouse > 0)
+ if (have_mouse > 0 && !mouse_preempted)
{
int but, press, x, y, ok;
FRAME_PTR f;
register int pix_x, pix_y;
register int *x, *y;
- void /* XRectangle */ *bounds;
+ XRectangle *bounds;
int noclip;
{
if (bounds) abort ();
text = (GLYPH *) xmalloc ((width + 2) * sizeof (GLYPH));
ScreenGetCursor (&row, &col);
mouse_get_xy (&mx, &my);
- IT_update_begin ();
+ IT_update_begin (selected_frame);
for (i = 0; i < menu->count; i++)
{
IT_cursor_to (y + i, x);
*p++ = FAST_MAKE_GLYPH (menu->submenu[i] ? 16 : ' ', face);
IT_write_glyphs (text, width + 2);
}
- IT_update_end ();
+ IT_update_end (selected_frame);
IT_cursor_to (row, col);
xfree (text);
}
/* 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;
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);
+
IT_menu_display (menu, y0 - 1, x0 - 1, title_faces); /* display menu title */
if (buffers_num_deleted)
menu->text[0][7] = ' ';
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])
state[statecount - 1].x,
faces);
}
- for (b = 0; b < mouse_button_count; b++)
+ else
+ /* 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++)
{
- (void) mouse_pressed (b, &x, &y);
- if (mouse_released (b, &x, &y))
- leave = 1;
+ /* 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);
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;
}
unsigned char *np = buf;
unsigned char *startp = buf;
unsigned char *endp = buf + n;
- unsigned char c;
if (n == 0)
return n;
}
}
+/* 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,
(filename)
Lisp_Object filename;
{
- char *fname;
Lisp_Object tem;
if (! STRINGP (filename))
{
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: ");
/* Find our root from argv[0]. Assuming argv[0] is, say,
"c:/emacs/bin/emacs.exe" our root will be "c:/emacs". */
while (len > 0 && root[len] != '/' && root[len] != ':')
len--;
root[len] = '\0';
- if (len > 4 && strcmp (root + len - 4, "/bin") == 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"); /* Only under debuggers, I think. */
+ strcpy (root, "c:/emacs"); /* let's be defensive */
len = strlen (root);
strcpy (emacsroot, root);
file TEMPOUT and stderr to TEMPERR. */
int
-run_msdos_command (argv, dir, tempin, tempout, temperr)
+run_msdos_command (argv, working_dir, tempin, tempout, temperr, envv)
unsigned char **argv;
- Lisp_Object dir;
+ const char *working_dir;
int tempin, tempout, temperr;
+ char **envv;
{
- char *saveargv1, *saveargv2, **envv;
+ char *saveargv1, *saveargv2, *lowcase_argv0, *pa, *pl;
char oldwd[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
int msshell, result = -1;
- int in, out, inbak, outbak, errbak;
+ int inbak, outbak, errbak;
int x, y;
Lisp_Object cmd;
/* Get current directory as MSDOS cwd is not per-process. */
getwd (oldwd);
- cmd = Ffile_name_nondirectory (build_string (argv[0]));
+ /* 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)
}
}
- /* Build the environment array. */
- {
- extern Lisp_Object Vprocess_environment;
- Lisp_Object tmp, lst;
- int i, len;
-
- lst = Vprocess_environment;
- len = XFASTINT (Flength (lst));
-
- envv = alloca ((len + 1) * sizeof (char *));
- for (i = 0; i < len; i++)
- {
- tmp = Fcar (lst);
- lst = Fcdr (lst);
- CHECK_STRING (tmp, 0);
- envv[i] = alloca (XSTRING (tmp)->size + 1);
- strcpy (envv[i], XSTRING (tmp)->data);
- }
- envv[len] = (char *) 0;
- }
-
- if (STRINGP (dir))
- chdir (XSTRING (dir)->data);
+ chdir (working_dir);
inbak = dup (0);
outbak = dup (1);
errbak = dup (2);
cannot grok commands longer than 126 characters. In DJGPP v2
and later, `system' is much smarter, so we'll call it instead. */
- extern char **environ;
- environ = envv;
+ const char *cmnd;
/* A shell gets a single argument--its full command
line--whose original was saved in `saveargv2'. */
- result = system (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
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);
nice (p) int p; {}
void volatile pause () {}
sigsetmask (x) int x; { return 0; }
+sigblock (mask) int mask; { return 0; }
#endif
-request_sigio () {}
+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 (¤t_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 (¤t_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; }
-unrequest_sigio () {}
+
+#endif /* not POSIX_SIGNALS */
+#endif /* __DJGPP__ > 1 */
#ifndef HAVE_SELECT
#include "sysselect.h"
&& (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
{
while (!detect_input_pending ())
{
-#if __DJGPP__ >= 2
- __dpmi_yield ();
-#endif
+ dos_yield_time_slice ();
}
}
else
if (EMACS_TIME_ZERO_OR_NEG_P (*timeout))
return 0;
cllast = clnow;
-#if __DJGPP__ >= 2
- __dpmi_yield ();
-#endif
+ dos_yield_time_slice ();
}
}
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);
+#endif /* __DJGPP_MINOR__ < 2 */
/* Generate traceback, so we could tell whodunit. */
signal (SIGINT, SIG_DFL);
__asm__ __volatile__ ("movb $0x1b,%al;call ___djgpp_hw_exception");
}
#endif
+/* The following two are required so that customization feature
+ won't complain about unbound variables. */
+#ifndef HAVE_X_WINDOWS
+/* Search path for bitmap files (xfns.c). */
+Lisp_Object Vx_bitmap_file_path;
+#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
+ 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, ".");
+
+ /* The following two are from xfns.c: */
+ Qbackground_color = intern ("background-color");
+ staticpro (&Qbackground_color);
+ Qforeground_color = intern ("foreground-color");
+ staticpro (&Qforeground_color);
+#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);
}
#endif /* MSDOS */
+
HCoop / bpt / emacs.git / blobdiff