-/* MS-DOS specific C utilities.
- Copyright (C) 1993, 1994, 1995 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/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 "dosfns.h"
#include "msdos.h"
#include "systime.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>
/* 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 ()
}
}
+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)
-{
- union REGS regs;
-
- regs.x.ax = 0x0003;
- int86 (0x33, ®s, ®s);
- *x = regs.x.cx / 8;
- *y = regs.x.dx / 8;
-}
-
void
mouse_get_pos (f, insist, bar_window, part, x, y, time)
FRAME_PTR *f;
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
/* 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. */
-#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)
+/* 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;
+
+ 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
-/*
- * If we write a character in the position where the mouse is,
- * the mouse cursor may need to be refreshed.
- */
+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. */
+
+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;
+
+ /* Do we have a VGA? */
+ regs.x.ax = 0x1a00;
+ int86 (0x10, ®s, ®s);
+ if (regs.h.al == 0x1a && regs.h.bl > 5 && regs.h.bl < 13)
+ have_vga = 1;
+
+ mouse_off ();
+
+ /* 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, ®s, ®s);
+
+ 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, ®s, ®s);
+ }
+ }
+
+ /* 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, ®s, ®s);
+ regs.x.ax = 0x1101;
+ regs.h.bl = 0;
+ int86 (0x10, ®s, ®s);
+ regs.x.ax = 0x1200;
+ regs.h.bl = 32;
+ int86 (0x10, ®s, ®s);
+ regs.x.ax = 3;
+ int86 (0x10, ®s, ®s);
+ }
+ }
+ 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, ®s, ®s);
+ regs.x.ax = 0x1112;
+ regs.h.bl = 0;
+ int86 (0x10, ®s, ®s);
+ regs.x.ax = 0x1200;
+ regs.h.bl = 32;
+ int86 (0x10, ®s, ®s);
+ regs.x.ax = 0x0100;
+ regs.x.cx = 7;
+ int86 (0x10, ®s, ®s);
+ }
+#endif /* not __DJGPP__ > 1 */
+
+ if (have_mouse)
+ {
+ mouse_init ();
+ mouse_on ();
+ }
+
+ /* Tell the caller what dimensions have been REALLY set. */
+ *rows = ScreenRows ();
+ *cols = ScreenCols ();
+
+ /* 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 ()
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);
}
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;
}
{
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
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;
}
new_pos_Y = y;
}
+static int cursor_cleared;
+
+static
+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
+IT_cmgoto (f)
+ 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;
+
+ /* If we are in the echo area, put the cursor at the end of text. */
+ if (!update_cursor_pos
+ && XFASTINT (XWINDOW (FRAME_MINIBUF_WINDOW (f))->top) <= new_pos_Y)
+ {
+ new_pos_X = FRAME_DESIRED_GLYPHS (f)->used[new_pos_Y];
+ 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
IT_reassert_line_highlight (new, vpos)
int new, vpos;
{
}
-/* This was more or less copied from xterm.c */
-static void
-IT_set_menu_bar_lines (window, n)
- Lisp_Object window;
- int n;
+/* set-window-configuration on window.c needs this. */
+void
+x_set_menu_bar_lines (f, value, oldval)
+ struct frame *f;
+ Lisp_Object value, oldval;
{
- struct window *w = XWINDOW (window);
-
- XSETFASTINT (w->last_modified, 0);
- XSETFASTINT (w->top, XFASTINT (w->top) + n);
- XSETFASTINT (w->height, XFASTINT (w->height) - n);
+ set_menu_bar_lines (f, value, oldval);
+}
- /* Handle just the top child in a vertical split. */
- if (!NILP (w->vchild))
- IT_set_menu_bar_lines (w->vchild, n);
+/* This was copied from xfns.c */
- /* 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);
- }
-}
+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!
- */
+/* IT_set_terminal_modes is called when emacs is started,
+ resumed, and whenever the screen is redrawn! */
static
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.
- */
+/* IT_reset_terminal_modes is called when emacs is
+ suspended or killed. */
static
IT_reset_terminal_modes (void)
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;
}
}
void
-IT_set_frame_parameters (frame, alist)
- FRAME_PTR frame;
+IT_set_frame_parameters (f, alist)
+ FRAME_PTR f;
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 ();
- FRAME_PTR f = (FRAME_PTR) &the_only_frame;
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 %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 & ~8;
+ FRAME_BACKGROUND_PIXEL (f) = new_color;
redraw = 1;
+ if (termscript)
+ fprintf (termscript, "<BGCOLOR %lu>\n", new_color);
}
}
- else if (EQ (prop, intern ("menu-bar-lines")))
+ else if (EQ (prop, Qtitle))
{
- int new;
- int old = FRAME_MENU_BAR_LINES (the_only_frame);
+ 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);
- if (INTEGERP (val))
- new = XINT (val);
- else
- new = 0;
- FRAME_MENU_BAR_LINES (f) = new;
- IT_set_menu_bar_lines (the_only_frame.root_window, new - old);
+ 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);
- Fredraw_frame (Fselected_frame ());
+ if (f == selected_frame)
+ redraw_frame (f);
}
}
+extern void init_frame_faces (FRAME_PTR);
+
#endif /* !HAVE_X_WINDOWS */
-/* Do we need the internal terminal? */
+/* Do we need the internal terminal? */
+
void
internal_terminal_init ()
{
#ifndef HAVE_X_WINDOWS
if (!internal_terminal || inhibit_window_system)
{
- the_only_frame.output_method = output_termcap;
+ selected_frame->output_method = output_termcap;
return;
}
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 */
+ bright_bg ();
colors = getenv ("EMACSCOLORS");
if (colors && strlen (colors) >= 2)
{
- the_only_x_display.foreground_pixel = colors[0] & 0x07;
- the_only_x_display.background_pixel = colors[1] & 0x07;
+ /* 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_frame.output_data.x = &the_only_x_display;
- the_only_frame.output_method = output_msdos_raw;
the_only_x_display.font = (XFontStruct *)1; /* must *not* be zero */
- init_frame_faces ((FRAME_PTR) &the_only_frame);
+ init_frame_faces (selected_frame);
ring_bell_hook = IT_ring_bell;
write_glyphs_hook = IT_write_glyphs;
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
}
+
+#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 windows system");
+}
+
+#endif
+
\f
/* ----------------------- Keyboard control ----------------------
*
" ~#{[|`\\^@]} 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;
+ union REGS regs;
+
+ /* See if Keyb.Com is installed (for international keyboard support). */
+ regs.x.ax = 0xad80;
+ int86 (0x2f, ®s, ®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
+ if (regs.h.ah & 1) /* Left CTRL pressed ? */
mask |= CTRL_P;
if (regs.h.ah & 4) /* Right 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
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;
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 = but;
+ event.code = button_num;
event.modifiers = dos_get_modifiers (0)
| (press ? down_modifier : up_modifier);
event.x = x;
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)
}
/* Read a key. Return -1 if no key is ready. */
+
dos_keyread ()
{
if (prev_get_char != -1)
*height = maxheight;
}
-/* Display MENU at (X,Y) using FACES. */
+/* Display MENU at (X,Y) using FACES. */
static void
IT_menu_display (XMenu *menu, int y, int x, int *faces)
p = text;
*p++ = FAST_MAKE_GLYPH (' ', face);
for (j = 0, q = menu->text[i]; *q; j++)
- *p++ = FAST_MAKE_GLYPH (*q++, face);
+ {
+ if (*q > 26)
+ *p++ = FAST_MAKE_GLYPH (*q++, face);
+ else /* make '^x' */
+ {
+ *p++ = FAST_MAKE_GLYPH ('^', face);
+ j++;
+ *p++ = FAST_MAKE_GLYPH (*q++ + 64, face);
+ }
+ }
+
for (; j < width; j++)
*p++ = FAST_MAKE_GLYPH (' ', face);
*p++ = FAST_MAKE_GLYPH (menu->submenu[i] ? 16 : ' ', face);
XMenuAddPane (Display *foo, XMenu *menu, char *txt, int enable)
{
int len;
+ char *p;
if (!enable)
abort ();
menu->text[menu->count] = txt;
menu->panenumber[menu->count] = ++menu->panecount;
menu->count++;
- if ((len = strlen (txt)) > menu->width)
+
+ /* 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;
}
int foo, char *txt, int enable)
{
int len;
+ char *p;
if (pane)
if (!(menu = IT_menu_search_pane (menu, pane)))
menu->text[menu->count] = txt;
menu->panenumber[menu->count] = enable;
menu->count++;
- if ((len = strlen (txt)) > menu->width)
+
+ /* 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;
}
int faces[4], selectface;
int leave, result, onepane;
int title_faces[4]; /* face to display the menu title */
+ int buffers_num_deleted = 0;
/* 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;
state = alloca (menu->panecount * sizeof (struct IT_menu_state));
screensize = screen_size * 2;
faces[0]
- = compute_glyph_face (&the_only_frame,
+ = compute_glyph_face (selected_frame,
face_name_id_number
- (&the_only_frame,
+ (selected_frame,
intern ("msdos-menu-passive-face")),
0);
faces[1]
- = compute_glyph_face (&the_only_frame,
+ = compute_glyph_face (selected_frame,
face_name_id_number
- (&the_only_frame,
+ (selected_frame,
intern ("msdos-menu-active-face")),
0);
selectface
- = face_name_id_number (&the_only_frame, intern ("msdos-menu-select-face"));
- faces[2] = compute_glyph_face (&the_only_frame, selectface, faces[0]);
- faces[3] = compute_glyph_face (&the_only_frame, selectface, faces[1]);
+ = face_name_id_number (selected_frame, intern ("msdos-menu-select-face"));
+ faces[2] = compute_glyph_face (selected_frame, selectface, faces[0]);
+ faces[3] = compute_glyph_face (selected_frame, selectface, faces[1]);
/* Make sure the menu title is always displayed with
`msdos-menu-active-face', no matter where the mouse pointer is. */
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);
+
IT_menu_display (menu, y0 - 1, x0 - 1, title_faces); /* display menu title */
+ if (buffers_num_deleted)
+ menu->text[0][7] = ' ';
if ((onepane = menu->count == 1 && menu->submenu[0]))
{
menu->width = menu->submenu[0]->width;
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])
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 */
return result;
}
\f
/* ----------------------- 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 == '\\')
unixtodos_filename (p)
register char *p;
{
+ if (p[1] == ':' && *p >= 'A' && *p <= 'Z')
+ {
+ *p += 'a' - 'A';
+ p += 2;
+ }
+
while (*p)
{
if (*p == '/')
int drive;
char *dst;
{
- union REGS regs;
+ char in_path[4], *p = in_path;
+ int e = errno;
- *dst++ = '/';
- regs.h.dl = drive;
- regs.x.si = (int) dst;
- regs.h.ah = 0x47;
- intdos (®s, ®s);
- return !regs.x.cflag;
+ /* 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);
+ if (errno)
+ return 0;
+
+ msdos_downcase_filename (dst);
+
+ errno = e;
+ return 1;
}
/* Remove all CR's that are followed by a LF. */
unsigned char *np = buf;
unsigned char *startp = buf;
unsigned char *endp = buf + n;
- unsigned char c;
if (n == 0)
return n;
*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;
+}
\f
/* The Emacs root directory as determined by init_environment. */
"c:/emacs/bin/emacs.exe" our root will be "c:/emacs". */
root = alloca (MAXPATHLEN + 20);
_fixpath (argv[0], root);
- strlwr (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)
+ 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);
if (!s) s = "c:/command.com";
t = alloca (strlen (s) + 1);
strcpy (t, s);
- strlwr (t);
dostounix_filename (t);
setenv ("SHELL", t, 0);
/* Current directory is always considered part of MsDos's path but it is
not normally mentioned. Now it is. */
strcat (strcpy (t, ".;"), s);
- strlwr (t);
dostounix_filename (t); /* Not a single file name, but this should work. */
setenv ("PATH", t, 1);
setenv ("TZ", "IST-02IDT-03,M4.1.6/00:00,M9.5.6/01:00", 0);
break;
}
- init_gettimeofday ();
+ tzset ();
}
\f
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;
}
}
-/*
- * Turn off Dos' Ctrl-C checking and inhibit interpretation of
- * control chars by Dos.
- * Determine the keyboard type.
- */
+#endif /* __DJGPP__ < 2 */
+
+/* Turn off Dos' Ctrl-C checking and inhibit interpretation of
+ control chars by DOS. Determine the keyboard type. */
int
dos_ttraw ()
break_stat = getcbrk ();
setcbrk (0);
+#if __DJGPP__ < 2
install_ctrl_break_check ();
+#endif
if (first_time)
{
mouse_init ();
}
}
-
+
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. */
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 ()
{
setcbrk (break_stat);
mouse_off ();
+#if __DJGPP__ >= 2
+
+ 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 */
}
\f
/* 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, dir, tempin, tempout, temperr)
unsigned char **argv;
Lisp_Object dir;
int tempin, tempout, temperr;
{
- char *saveargv1, *saveargv2, **envv;
+ char *saveargv1, *saveargv2, **envv, *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)
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. */
+
+ extern char **environ;
+ environ = envv;
+
+ /* A shell gets a single argument--its full command
+ line--whose original was saved in `saveargv2'. */
+ result = system (saveargv2);
+ }
+ else
+
+#endif /* __DJGPP__ > 1 */
+
result = spawnve (P_WAIT, argv[0], argv, envv);
dup2 (inbak, 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);
exit (1);
}
\f
+#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.
- */
+/* 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;
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 () {}
-request_sigio () {}
+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; }
-sigsetmask (x) int x; { return 0; }
-unrequest_sigio () {}
+void unrequest_sigio (void) {}
-#ifndef HAVE_SELECT
-#include "sysselect.h"
+#if __DJGPP__ > 1
+
+#ifdef POSIX_SIGNALS
-static struct time last_time = {120, 120, 120, 120};
-static int modeline_time_displayed = 0;
+/* Augment DJGPP library POSIX signal functions. This is needed
+ as of DJGPP v2.01, but might be in the library in later releases. */
-Lisp_Object Vdos_display_time;
+#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
-check_timer (t)
- struct time *t;
+sig_suspender (signo)
+ int signo;
{
- int sec, min, hour, hund;
+ sigaddset (&pending_signals, signo);
+}
- gettime (t);
- sec = t->ti_sec;
- hund = t->ti_hund;
- hour = t->ti_hour;
- min = t->ti_min;
+int
+sigprocmask (how, new_set, old_set)
+ int how;
+ const sigset_t *new_set;
+ sigset_t *old_set;
+{
+ int signo;
+ sigset_t new_mask;
- /* Any chance of not getting here 24 hours or more since last time? */
- if (hour == last_time.ti_hour
- && min == last_time.ti_min
- && sec == last_time.ti_sec)
- return;
+ /* 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 (!NILP (Vdos_display_time))
+ if (how != SIG_BLOCK && how != SIG_UNBLOCK && how != SIG_SETMASK)
{
- int interval;
- Lisp_Object dti = XSYMBOL (Fintern_soft (build_string ("display-time-interval"), Qnil))->value;
- int delta_time = ((hour - last_time.ti_hour) * 3600
- + (min - last_time.ti_min) * 60
- + (sec - last_time.ti_sec));
-
- /* Who knows what the user may put into `display-time-interval'? */
- if (!INTEGERP (dti) || (interval = XINT (dti)) <= 0)
- interval = 60;
-
- /* When it's time to renew the display, fake a `wakeup' call. */
- if (!modeline_time_displayed /* first time */
- || delta_time >= interval /* or if we were busy for a long time */
- || interval == 1 /* and every `interval' seconds hence */
- || interval == 60 && sec == 0 /* (usual cases first) */
- || (hour * 3600 + min * 60 + sec) % interval == 0)
- call2 (intern ("display-time-filter"), Qnil,
- build_string ("Wake up!\n"));
-
- modeline_time_displayed = 1;
+ errno = EINVAL;
+ return -1;
}
- else if (modeline_time_displayed)
+
+ sigemptyset (&new_mask);
+
+ /* DJGPP supports upto 320 signals. */
+ for (signo = 0; signo < 320; signo++)
{
- modeline_time_displayed = 0;
- Fset (intern ("display-time-string"), build_string (""));
+ if (sigismember (¤t_mask, signo))
+ sigaddset (&new_mask, signo);
+ else if (sigismember (new_set, signo) && how != SIG_UNBLOCK)
+ {
+ sigaddset (&new_mask, signo);
- /* Force immediate redisplay of modelines. */
- update_mode_lines++;
- redisplay_preserve_echo_area ();
+ /* 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);
+ }
+ }
}
-
- last_time = *t;
+ 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
+
+
/* 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;
EMACS_TIME *timeout;
{
int check_input;
- long timeoutval, clnow, cllast;
struct time t;
check_input = 0;
just read it and wait -- that's more efficient. */
if (!timeout)
{
- do
- check_timer (&t); /* check timer even if some input is pending */
- while (!detect_input_pending ());
+ while (!detect_input_pending ())
+ {
+#if __DJGPP__ >= 2
+ __dpmi_yield ();
+#endif
+ }
}
else
{
- timeoutval = EMACS_SECS (*timeout) * 100 + EMACS_USECS (*timeout) / 10000;
- check_timer (&t);
- cllast = t.ti_sec * 100 + t.ti_hund;
+ 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 ())
{
- check_timer (&t);
- clnow = t.ti_sec * 100 + t.ti_hund;
- if (clnow < cllast) /* time wrap */
- timeoutval -= clnow + 6000 - cllast;
- else
- timeoutval -= clnow - cllast;
- if (timeoutval <= 0) /* Stop on timer being cleared */
+ 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;
+#if __DJGPP__ >= 2
+ __dpmi_yield ();
+#endif
}
}
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);
+#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
exit (2);
}
#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);
-
- DEFVAR_LISP ("dos-display-time", &Vdos_display_time,
- "*When non-nil, `display-time' is in effect on DOS systems.");
- Vdos_display_time = Qnil;
+ defsubr (&Smsdos_long_file_names);
+ defsubr (&Smsdos_downcase_filename);
}
#endif /* MSDOS */
HCoop / bpt / emacs.git / blobdiff