-/* MS-DOS specific C utilities.
- Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+/* 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 1, or (at your option)
+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,
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+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 "lisp.h"
#include <stdio.h>
#include <stdlib.h>
+#include <time.h>
#include <sys/param.h>
#include <sys/time.h>
#include <dos.h>
-#include "dosfns.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 <go32.h>
#include <pc.h>
#include <ctype.h>
/* Damn that local process.h! Instead we can define P_WAIT ourselves. */
#define P_WAIT 1
-static int break_stat; /* BREAK check mode status. */
-static int stdin_stat; /* stdin IOCTL status. */
-static int extended_kbd; /* 101 (102) keyboard present. */
+#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;
+}
+
+\f
+/* ------------------------ Mouse control ---------------------------
+ *
+ * Coordinates are in screen positions and zero based.
+ * Mouse buttons are numbered from left to right and also zero based.
+ */
+
+int have_mouse; /* 0: no, 1: enabled, -1: disabled */
+static int mouse_visible;
-int have_mouse; /* Mouse present? */
static int mouse_last_x;
static int mouse_last_y;
-/* Turn off Dos' Ctrl-C checking and inhibit interpretation of control chars
- by Dos. Determine the keyboard type. */
-int
-dos_ttraw ()
+static int mouse_button_translate[NUM_MOUSE_BUTTONS];
+static int mouse_button_count;
+
+void
+mouse_on ()
{
- union REGS inregs, outregs;
+ union REGS regs;
- inregs.h.ah = 0xc0;
- int86 (0x15, &inregs, &outregs);
- extended_kbd = (!outregs.x.cflag) && (outregs.h.ah == 0);
+ if (have_mouse > 0 && !mouse_visible)
+ {
+ if (termscript)
+ fprintf (termscript, "<M_ON>");
+ regs.x.ax = 0x0001;
+ int86 (0x33, ®s, ®s);
+ mouse_visible = 1;
+ }
+}
- break_stat = getcbrk ();
- setcbrk (0);
- install_ctrl_break_check ();
- have_mouse = mouse_init1 ();
+void
+mouse_off ()
+{
+ union REGS regs;
- inregs.x.ax = 0x4400; /* Get IOCTL status. */
- inregs.x.bx = 0x00; /* 0 = stdin. */
- intdos (&inregs, &outregs);
- stdin_stat = outregs.h.dl;
+ if (have_mouse > 0 && mouse_visible)
+ {
+ if (termscript)
+ fprintf (termscript, "<M_OFF>");
+ regs.x.ax = 0x0002;
+ int86 (0x33, ®s, ®s);
+ mouse_visible = 0;
+ }
+}
- inregs.x.dx = (outregs.x.dx | 0x0020) & 0x0027; /* raw mode */
- inregs.h.al = 0x01;
- intdos (&inregs, &outregs);
- return !outregs.x.cflag;
+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;
+{
+ 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, ®s, ®s);
+}
+
+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, ®s, ®s);
+ 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, ®s, ®s);
+ 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, ®s, ®s);
+ 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, ®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);
+ int86 (0x33, ®s, ®s);
+
+ regs.x.ax = 0x0008;
+ regs.x.cx = 0;
+ regs.x.dx = 8 * (ScreenRows () - 1);
+ int86 (0x33, ®s, ®s);
+
+ mouse_moveto (0, 0);
+ mouse_visible = 0;
+}
+\f
+/* ------------------------- 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;
+
+/* Similar to the_only_frame. */
+struct x_output the_only_x_display;
+
+/* 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;
+/* A flag to control how to display unibyte 8-bit characters. */
+extern int unibyte_display_via_language_environment;
+
+#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 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, ®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 ()
+{
+ int x, y;
+
+ if (!mouse_visible)
+ return;
+
+ mouse_get_xy (&x, &y);
+ if (y != new_pos_Y || x < new_pos_X)
+ return;
+
+ mouse_off ();
+}
+
+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 face *fp = FACE_FROM_ID (selected_frame, face);
+ unsigned long fg, bg;
+
+ if (!fp)
+ {
+ fp = FACE_FROM_ID (selected_frame, 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, a color of -1 means 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 == (unsigned long)-1)
+ fg = highlight ? FRAME_BACKGROUND_PIXEL (selected_frame)
+ : FRAME_FOREGROUND_PIXEL (selected_frame);
+ if (bg == (unsigned long)-1)
+ bg = highlight ? FRAME_FOREGROUND_PIXEL (selected_frame)
+ : FRAME_BACKGROUND_PIXEL (selected_frame);
+ if (termscript)
+ fprintf (termscript, "<FACE %d%s: %d/%d>",
+ face, highlight ? "H" : "", fp->foreground, fp->background);
+ 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;
+
+ struct coding_system *coding = (CODING_REQUIRE_ENCODING (&terminal_coding)
+ ? &terminal_coding
+ : &safe_terminal_coding);
+
+ /* 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;
+
+ /* 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[4], *buf;
+ unsigned ch;
+ register GLYPH g = GLYPH_FROM_CHAR_GLYPH (*str);
+
+ /* Find the actual glyph to display by traversing the entire
+ aliases chain for this glyph. */
+ GLYPH_FOLLOW_ALIASES (tbase, tlen, g);
+
+ /* 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
+ {
+ /* Convert the character code to multibyte, if they
+ requested display via language environment. */
+ ch = FAST_GLYPH_CHAR (g);
+ /* We only want to convert unibyte characters to multibyte
+ in unibyte buffers! Otherwise, the 8-bit code might come
+ 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 (! GLYPH_CHAR_VALID_P (ch))
+ {
+ g = !NILP (Vdos_unsupported_char_glyph)
+ ? Vdos_unsupported_char_glyph
+ : MAKE_GLYPH (selected_frame, '\177',
+ GLYPH_FACE (selected_frame, g));
+ ch = FAST_GLYPH_CHAR (g);
+ }
+ if (COMPOSITE_CHAR_P (ch))
+ {
+ /* If CH is a composite character, we can display
+ only the first component. */
+ g = cmpchar_table[COMPOSITE_CHAR_ID (ch)]->glyph[0],
+ ch = GLYPH_CHAR (selected_frame, g);
+ cf = FAST_GLYPH_FACE (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_SIMPLE_P (tbase, tlen, g))
+ /* We generate the multi-byte form of CH in BUF. */
+ chlen = CHAR_STRING (ch, workbuf, buf);
+ 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
+ {
+ 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)
+ {
+ 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;
+ }
+ }
+}
+
+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 (fatal_error_in_progress)
+ return;
+
+ IT_set_face (0);
+ if (termscript)
+ fprintf (termscript, "<CLR:EOL>");
+ i = (j = screen_size_X - new_pos_X) * 2;
+ 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);
+}
+
+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 (0);
+ 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 = 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 void
+IT_change_line_highlight (int new_highlight, int y, int vpos, int first_unused_hpos)
+{
+ highlight = new_highlight;
+ IT_set_face (0); /* To possibly clear the highlighting. */
+ IT_cursor_to (vpos, 0);
+ IT_clear_end_of_line (first_unused_hpos);
+}
+
+static void
+IT_update_begin (struct frame *foo)
+{
+ highlight = 0;
+ IT_set_face (0); /* To possibly clear the highlighting. */
+ screen_face = -1;
+}
+
+static void
+IT_update_end (struct frame *foo)
+{
+}
+
+/* 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;
+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, ®s);
+
+ 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)
+{
+}
+
+void
+IT_set_frame_parameters (f, alist)
+ struct frame *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;
+ struct face *dflt = NULL;
+
+ if (FRAME_FACE_CACHE (f))
+ dflt = FACE_FROM_ID (f, DEFAULT_FACE_ID);
+
+ redraw = 0;
+
+ /* 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++;
+ }
+
+
+ /* 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, Qforeground_color))
+ {
+ unsigned long new_color = load_color (f, NULL, val,
+ LFACE_FOREGROUND_INDEX);
+ if (new_color != ~0)
+ {
+ if (!dflt)
+ abort ();
+ FRAME_FOREGROUND_PIXEL (f) = new_color;
+ dflt->foreground = new_color;
+ redraw = 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,
+ LFACE_BACKGROUND_INDEX);
+ if (new_color != ~0)
+ {
+ if (!dflt)
+ abort ();
+ FRAME_BACKGROUND_PIXEL (f) = new_color;
+ dflt->background = new_color;
+ redraw = 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, intern ("reverse")) && EQ (val, Qt))
+ {
+ unsigned long fg = FRAME_FOREGROUND_PIXEL (f);
+
+ if (!dflt)
+ abort ();
+ FRAME_FOREGROUND_PIXEL (f) = FRAME_BACKGROUND_PIXEL (f); /* FIXME! */
+ FRAME_BACKGROUND_PIXEL (f) = fg;
+ dflt->foreground = FRAME_FOREGROUND_PIXEL (f);
+ dflt->foreground = fg;
+ if (termscript)
+ fprintf (termscript, "<INVERSE-VIDEO>\n");
+ }
+ store_frame_param (f, prop, val);
+
+ }
+
+ if (redraw)
+ {
+ recompute_basic_faces (f);
+ 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;
+
+#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)
+ {
+ 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 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 */
+
+ init_frame_faces (selected_frame);
+
+ 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_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;
+ 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 windows system");
+}
+
+#endif
+
+\f
+/* ----------------------- 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 */
+ "ý&\82\",(-\8a_\80\85)= azertyuiop^$ qsdfghjklm\97* wxcvbnm;:! ",
+/* 0123456789012345678901234567890123456789012345678901234 */
+ " 1234567890ø+ AZERTYUIOPù\9c QSDFGHJKLM%æ WXCVBN?./õ ",
+/* 01234567 89012345678901234567890123456789012345678901234 */
+ " ~#{[|`\\^@]} Ï ",
+ 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'\8d< qwertyuiop\8a+> asdfghjkl\95\85\97 zxcvbnm,.- ",
+/* 01 23456789012345678901234567890123456789012345678901234 */
+ "|!\"\9c$%&/()=?^> QWERTYUIOP\82* ASDFGHJKL\87øõ ZXCVBNM;:_ ",
+/* 0123456789012345678901234567890123456789012345678901234 */
+ " {}~` [] @# ",
+ it_kbd_translate_table
+};
+
+static struct dos_keyboard_map dk_keyboard = {
+/* 0 1 2 3 4 5 */
+/* 0123456789012345678901234567890123456789012345678901234 */
+ "«1234567890+| qwertyuiop\86~ asdfghjkl\91\9b' zxcvbnm,.- ",
+/* 01 23456789012345678901234567890123456789012345678901234 */
+ "õ!\"#$%&/()=?` QWERTYUIOP\8f^ ASDFGHJKL\92\9d* ZXCVBNM;:_ ",
+/* 0123456789012345678901234567890123456789012345678901234 */
+ " @\9c$ {[]} | ",
+ 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, ®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;
+ 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;
+}
+\f
+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 */
+};
+\f
+/* 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, ®s, ®s);
+
+ 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 mouse_preempted = 0; /* non-zero when XMenu gobbles mouse events */
+
+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, ®s, ®s),
+ (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, ®s, ®s);
+ 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;
+ XSETFRAME (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;
+
+ /* Check for mouse movement *before* buttons. */
+ mouse_check_moved ();
+
+ 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;
+ XSETFRAME (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 ();
+}
+\f
+#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;
+}
+\f
+/* 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 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));
+ }
+ 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));
+ }
+}
+
+/* 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 i, j, face, width;
+ struct glyph *text, *p;
+ char *q;
+ int mx, my;
+ int enabled, mousehere;
+ int row, col;
+
+ width = menu->width;
+ text = (struct glyph *) xmalloc ((width + 2) * sizeof (struct glyph));
+ ScreenGetCursor (&row, &col);
+ mouse_get_xy (&mx, &my);
+ IT_update_begin (selected_frame);
+ for (i = 0; i < menu->count; i++)
+ {
+ 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];
+ 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++;
+ }
+ }
+
+ for (; j < width; j++, p++)
+ SET_CHAR_GLYPH (*p, ' ', face, 0);
+
+ SET_CHAR_GLYPH (*p, menu->submenu[i] ? 16 : ' ', face, 0);
+ p++;
+ IT_write_glyphs (text, width + 2);
+ }
+ IT_update_end (selected_frame);
+ IT_cursor_to (row, col);
+ xfree (text);
+}
+\f
+/* --------------------------- X Menu emulation ---------------------- */
+
+/* Report availability of menus. */
-/* Restore status of standard input and Ctrl-C checking. */
int
-dos_ttcooked ()
+have_menus_p ()
{
- union REGS inregs, outregs;
+ return 1;
+}
- setcbrk (break_stat);
- if (have_mouse) mouse_off ();
+/* Create a brand new menu structure. */
- 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;
+XMenu *
+XMenuCreate (Display *foo1, Window foo2, char *foo3)
+{
+ return IT_menu_create ();
}
-static unsigned short
-ibmpc_translate_map[] =
+/* 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)
{
- /* --------------- 00 to 0f --------------- */
- 0, /* Ctrl Break */
- 0xff1b, /* Escape */
- 0xffb1, /* Keypad 1 */
- 0xffb2, /* Keypad 2 */
- 0xffb3, /* Keypad 3 */
- 0xffb4, /* Keypad 4 */
- 0xffb5, /* Keypad 5 */
- 0xffb6, /* Keypad 6 */
- 0xffb7, /* Keypad 7 */
- 0xffb8, /* Keypad 8 */
- 0xffb9, /* Keypad 9 */
- 0xffb0, /* Keypad 0 */
- '-', '=',
- 0xff08, /* Backspace */
- 0xff74, /* (Shift) Tab [Tab doesn't use this table] */
+ int len;
+ char *p;
- /* --------------- 10 to 1f --------------- */
- 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']',
- 0xff8d, /* Keypad Enter */
- 0, /* Ctrl */
- 'a', 's',
+ if (!enable)
+ abort ();
- /* --------------- 20 to 2f --------------- */
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`',
- 0, /* Left shift */
- '\\', 'z', 'x', 'c', 'v',
+ IT_menu_make_room (menu);
+ menu->submenu[menu->count] = IT_menu_create ();
+ menu->text[menu->count] = txt;
+ menu->panenumber[menu->count] = ++menu->panecount;
+ menu->count++;
- /* --------------- 30 to 3f --------------- */
- 'b', 'n', 'm', ',', '.',
- 0xffaf, /* Grey / */
- 0, /* Right shift */
- 0xffaa, /* Grey * */
- 0, /* Alt */
- ' ',
- 0, /* Caps Lock */
- 0xffbe, /* F1 */
- 0xffbf, /* F2 */
- 0xffc0, /* F3 */
- 0xffc1, /* F4 */
- 0xffc2, /* F5 */
+ /* Adjust length for possible control characters (which will
+ be written as ^x). */
+ for (len = strlen (txt), p = txt; *p; p++)
+ if (*p < 27)
+ len++;
- /* --------------- 40 to 4f --------------- */
- 0xffc3, /* F6 */
- 0xffc4, /* F7 */
- 0xffc5, /* F8 */
- 0xffc6, /* F9 */
- 0xffc7, /* F10 */
- 0, /* Num Lock */
- 0, /* Scroll Lock */
- 0xff50, /* Home */
- 0xff52, /* Up */
- 0xff55, /* Page Up */
- 0xffad, /* Grey - */
- 0xff51, /* Left */
- 0xffb5, /* Keypad 5 */
- 0xff53, /* Right */
- 0xffab, /* Grey + */
- 0xff57, /* End */
+ if (len > menu->width)
+ menu->width = len;
- /* --------------- 50 to 5f --------------- */
- 0xff54, /* Down */
- 0xff56, /* Page Down */
- 0xff63, /* Insert */
- 0xffff, /* Delete */
- 0xffbe, /* (Shift) F1 */
- 0xffbf, /* (Shift) F2 */
- 0xffc0, /* (Shift) F3 */
- 0xffc1, /* (Shift) F4 */
- 0xffc2, /* (Shift) F5 */
- 0xffc3, /* (Shift) F6 */
- 0xffc4, /* (Shift) F7 */
- 0xffc5, /* (Shift) F8 */
- 0xffc6, /* (Shift) F9 */
- 0xffc7, /* (Shift) F10 */
- 0xffbe, /* (Ctrl) F1 */
- 0xffbf, /* (Ctrl) F2 */
+ return menu->panecount;
+}
- /* --------------- 60 to 6f --------------- */
- 0xffc0, /* (Ctrl) F3 */
- 0xffc1, /* (Ctrl) F4 */
- 0xffc2, /* (Ctrl) F5 */
- 0xffc3, /* (Ctrl) F6 */
- 0xffc4, /* (Ctrl) F7 */
- 0xffc5, /* (Ctrl) F8 */
- 0xffc6, /* (Ctrl) F9 */
- 0xffc7, /* (Ctrl) F10 */
- 0xffbe, /* (Alt) F1 */
- 0xffbf, /* (Alt) F2 */
- 0xffc0, /* (Alt) F3 */
- 0xffc1, /* (Alt) F4 */
- 0xffc2, /* (Alt) F5 */
- 0xffc3, /* (Alt) F6 */
- 0xffc4, /* (Alt) F7 */
- 0xffc5, /* (Alt) F8 */
+/* Create a new item in a menu pane. */
- /* --------------- 70 to 7f --------------- */
- 0xffc6, /* (Alt) F9 */
- 0xffc7, /* (Alt) F10 */
- 0xff6d, /* (Ctrl) Sys Rq */
- 0xff51, /* (Ctrl) Left */
- 0xff53, /* (Ctrl) Right */
- 0xff57, /* (Ctrl) End */
- 0xff56, /* (Ctrl) Page Down */
- 0xff50, /* (Ctrl) Home */
- '1', '2', '3', '4', '5', '6', '7', '8', /* (Alt) */
+int
+XMenuAddSelection (Display *bar, XMenu *menu, int pane,
+ int foo, char *txt, int enable)
+{
+ int len;
+ char *p;
- /* --------------- 80 to 8f --------------- */
- '9', '0', '-', '=', /* (Alt) */
- 0xff55, /* (Ctrl) Page Up */
- 0xffc8, /* F11 */
- 0xffc9, /* F12 */
- 0xffc8, /* (Shift) F11 */
- 0xffc9, /* (Shift) F12 */
- 0xffc8, /* (Ctrl) F11 */
- 0xffc9, /* (Ctrl) F12 */
- 0xffc8, /* (Alt) F11 */
- 0xffc9, /* (Alt) F12 */
- 0xff52, /* (Ctrl) Up */
- 0xffae, /* (Ctrl) Grey - */
- 0xffb5, /* (Ctrl) Keypad 5 */
+ 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->count++;
- /* --------------- 90 to 9f --------------- */
- 0xffab, /* (Ctrl) Grey + */
- 0xff54, /* (Ctrl) Down */
- 0xff63, /* (Ctrl) Insert */
- 0xffff, /* (Ctrl) Delete */
- 0xff09, /* (Ctrl) Tab */
- 0xffaf, /* (Ctrl) Grey / */
- 0xffaa, /* (Ctrl) Grey * */
- 0xff50, /* (Alt) Home */
- 0xff52, /* (Alt) Up */
- 0xff55, /* (Alt) Page Up */
- 0, /* NO KEY */
- 0xff51, /* (Alt) Left */
- 0, /* NO KEY */
- 0xff53, /* (Alt) Right */
- 0, /* NO KEY */
- 0xff57, /* (Alt) End */
+ /* Adjust length for possible control characters (which will
+ be written as ^x). */
+ for (len = strlen (txt), p = txt; *p; p++)
+ if (*p < 27)
+ len++;
- /* --------------- a0 to af --------------- */
- 0xff54, /* (Alt) Down */
- 0xff56, /* (Alt) Page Down */
- 0xff63, /* (Alt) Insert */
- 0xffff, /* (Alt) Delete */
- 0xffaf, /* (Alt) Grey / */
- 0xff09, /* (Alt) Tab */
- 0xff0d /* (Alt) Enter */
+ 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;
};
-/* Get a char from keyboard. Function keys are put into the event queue. */
-static int
-dos_rawgetc ()
+
+/* 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)
{
- struct input_event event;
- struct timeval tv;
- union REGS regs;
- int ctrl_p, alt_p, shift_p;
+ 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;
- /* Calculate modifier bits */
- regs.h.ah = extended_kbd ? 0x12 : 0x02;
- int86 (0x16, ®s, ®s);
- ctrl_p = ((regs.h.al & 4) != 0);
- shift_p = ((regs.h.al & 3) != 0);
- /* Please be very careful here not to break international keyboard support.
- When Keyb.Com is loaded, the key marked `Alt Gr' is used for accessing
- characters like { and } if their positions are overlaid. */
- alt_p = ((extended_kbd ? (regs.h.ah & 2) : (regs.h.al & 8)) != 0);
+ /* 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;
- /* The following condition is equivalent to `kbhit ()', except that
- it uses the bios to do its job. This pleases DESQview/X. */
- while ((regs.h.ah = extended_kbd ? 0x11 : 0x01),
- int86 (0x16, ®s, ®s),
- (regs.x.flags & 0x40) == 0)
- {
- union REGS regs;
- register unsigned char c;
- int sc, code;
+ /* We will process all the mouse events directly, so we had
+ better prevented dos_rawgetc from stealing them from us. */
+ mouse_preempted++;
- regs.h.ah = extended_kbd ? 0x10 : 0x00;
- int86 (0x16, ®s, ®s);
- c = regs.h.al;
- sc = regs.h.ah;
+ state = alloca (menu->panecount * sizeof (struct IT_menu_state));
+ screensize = screen_size * 2;
+ faces[0]
+ = lookup_derived_face (selected_frame, intern ("msdos-menu-passive-face"),
+ CHARSET_ASCII, DEFAULT_FACE_ID);
+ faces[1]
+ = lookup_derived_face (selected_frame, intern ("msdos-menu-active-face"),
+ CHARSET_ASCII, DEFAULT_FACE_ID);
+ selectface = intern ("msdos-menu-select-face");
+ faces[2] = lookup_derived_face (selected_frame, selectface,
+ CHARSET_ASCII, faces[0]);
+ faces[3] = lookup_derived_face (selected_frame, selectface,
+ CHARSET_ASCII, faces[1]);
- /* Determine from the scan code if a keypad key was pressed. */
- if (c >= '0' && c <= '9' && sc > 0xb)
- sc = (c == '0') ? 0xb : (c - '0' + 1), c = 0;
- else if (sc == 0x53 && c != 0xe0)
- {
- code = 0xffae; /* Keypad decimal point/comma. */
- goto nonascii;
- }
- else if (sc == 0xe0)
- {
- switch (c)
- {
- case 10: /* Ctrl Enter */
- case 13:
- sc = 0x1c;
- break;
- case '/':
- sc = 0x35;
- break;
- default:
- sc = 0;
- };
- c = 0;
- }
+ /* 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];
- if (c == 0
- || c == ' '
- || alt_p
- || (ctrl_p && shift_p)
- || (c == 0xe0 && sc != 0) /* Pseudo-key */
- || sc == 0x37 /* Grey * */
- || sc == 0x4a /* Grey - */
- || sc == 0x4e /* Grey + */
- || sc == 0x0e) /* Back space *key*, not Ctrl-h */
- {
- if (sc >= (sizeof (ibmpc_translate_map) / sizeof (short)))
- code = 0;
- else
- code = ibmpc_translate_map[sc];
- if (code != 0)
- {
- if (code >= 0x100)
- {
- nonascii:
- event.kind = non_ascii_keystroke;
- event.code = (code & 0xff) + 0xff00;
- }
- else
- {
- /* Don't return S- if we don't have to. `shifted' is
- supposed to be the shifted versions of the characters
- in `unshifted'. Unfortunately, this is only true for
- US keyboard layout. If anyone knows how to do this
- right, please tell us. */
- static char *unshifted
- = "abcdefghijklmnopqrstuvwxyz,./=;[\\]'-`0123456789";
- static char *shifted
- = "ABCDEFGHIJKLMNOPQRSTUVWXYZ<>?+:{|}\"_~)!@#$%^&*(";
- char *pos;
-
- if (shift_p && (pos = strchr (unshifted, code)))
- {
- c = shifted[pos - unshifted];
- shift_p = 0;
- }
- else
- if (c == 0) c = code;
- event.kind = ascii_keystroke;
- event.code = c;
- }
- event.modifiers
- = (shift_p ? shift_modifier : 0)
- + (ctrl_p ? ctrl_modifier : 0)
- + (alt_p ? meta_modifier : 0);
- /* EMACS == Enter Meta Alt Control Shift */
- event.frame_or_window = selected_frame;
- gettimeofday (&tv, NULL);
- event.timestamp = tv.tv_usec;
- kbd_buffer_store_event (&event);
- }
- } else
- return c;
+ 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));
- if (have_mouse)
+ /* 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]))
{
- int but, press, x, y, ok;
+ 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;
- /* Check for mouse movement *before* buttons. */
+ mouse_last_x = -1; /* A hack that forces display. */
+ leave = 0;
+ while (!leave)
+ {
+ if (!mouse_visible) mouse_on ();
mouse_check_moved ();
-
- for (but = 0; but < NUM_MOUSE_BUTTONS; but++)
- for (press = 0; press < 2; press++)
- {
- if (press)
- ok = mouse_pressed (but, &x, &y);
- else
- ok = mouse_released (but, &x, &y);
- if (ok)
+ if (selected_frame->mouse_moved)
+ {
+ selected_frame->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)
{
- event.kind = mouse_click;
- event.code = but;
- event.modifiers
- = (shift_p ? shift_modifier : 0)
- + (ctrl_p ? ctrl_modifier : 0)
- + (alt_p ? meta_modifier : 0)
- + (press ? down_modifier : up_modifier);
- event.x = x;
- event.y = y;
- event.frame_or_window = selected_frame;
- gettimeofday (&tv, NULL);
- event.timestamp = tv.tv_usec;
- kbd_buffer_store_event (&event);
+ 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);
+ 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);
+ }
+ 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++)
+ {
+ /* 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);
+ }
}
- return -1;
+ 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;
}
-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);
-}
+/* Dispose of a menu. */
-/* Read a key. Return -1 if no key is ready. */
-dos_keyread ()
+void
+XMenuDestroy (Display *foo, XMenu *menu)
{
- if (prev_get_char != -1)
+ int i;
+ if (menu->allocated)
{
- int c = prev_get_char;
- prev_get_char = -1;
- return c;
+ 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);
}
- else
- return dos_rawgetc ();
+ xfree (menu);
}
-/* 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;
+int
+x_pixel_width (struct frame *f)
{
- char *q = egetenv ("HOSTNAME");
+ return FRAME_WIDTH (f);
+}
- if (!q) q = "pc";
- strcpy (p, q);
- return 0;
+int
+x_pixel_height (struct frame *f)
+{
+ return FRAME_HEIGHT (f);
}
+#endif /* !HAVE_X_WINDOWS */
+\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 == '\\')
}
/* 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 == '/')
}
/* Get the default directory for a given drive. 0=def, 1=A, 2=B, ... */
+
int
getdefdir (drive, dst)
int drive;
char *dst;
{
- union REGS regs;
+ 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);
+ /* _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;
unsigned char *np = buf;
unsigned char *startp = buf;
unsigned char *endp = buf + n;
- unsigned char c;
if (n == 0)
return n;
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)
-/* Run command as specified by ARGV in directory DIR.
- The command is run with input from TEMPIN and output to file TEMPOUT. */
int
-run_msdos_command (argv, dir, tempin, tempout)
- unsigned char **argv;
- Lisp_Object dir;
- int tempin, tempout;
+__write (int handle, const void *buffer, size_t count)
{
- char *saveargv1, *saveargv2, **envv;
- char oldwd[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
- int msshell, result = -1;
- int in, out, inbak, outbak, errbak;
- Lisp_Object cmd;
-
- /* Get current directory as MSDOS cwd is not per-process. */
- getwd (oldwd);
+ if (count == 0)
+ return 0;
- cmd = Ffile_name_nondirectory (build_string (argv[0]));
- msshell = !NILP (Fmember (cmd, Fsymbol_value (intern ("msdos-shells"))))
- && !strcmp ("-c", argv[1]);
- if (msshell)
+ if(__file_handle_modes[handle] & O_BINARY)
+ return _write (handle, buffer, count);
+ else
{
- saveargv1 = argv[1];
- saveargv2 = argv[2];
- argv[1] = "/c";
- if (argv[2])
+ char *xbp = xbuf;
+ const char *bp = buffer;
+ int total_written = 0;
+ int nmoved = 0, ncr = 0;
+
+ while (count)
{
- char *p = alloca (strlen (argv[2]) + 1);
+ /* 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);
- strcpy (argv[2] = p, saveargv2);
- while (*p && isspace (*p))
- p++;
- while (*p && !isspace (*p))
- if (*p == '/')
- *p++ = '\\';
- else
- p++;
+ 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;
}
+}
- /* Build the environment array. */
- {
- extern Lisp_Object Vprocess_environment;
- Lisp_Object tmp, lst;
- int i, len;
+/* 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. */
- lst = Vprocess_environment;
- len = XFASTINT (Flength (lst));
+#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;
- 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;
- }
+ r.x.dx = __tb_offset;
+ r.x.di = __tb_offset + olen;
+ r.x.ds = r.x.es = __tb_segment;
- if (XTYPE (dir) == Lisp_String)
- chdir (XSTRING (dir)->data);
- inbak = dup (0);
- outbak = dup (1);
- errbak = dup (2);
- if (inbak < 0 || outbak < 0 || errbak < 0)
- goto done; /* Allocation might fail due to lack of descriptors. */
- dup2 (tempin, 0);
- dup2 (tempout, 1);
- dup2 (tempout, 2);
- dos_ttcooked ();
- result = spawnve (P_WAIT, argv[0], argv, envv);
- dos_ttraw ();
- dup2 (inbak, 0);
- dup2 (outbak, 1);
- dup2 (errbak, 2);
+ 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. */
- done:
- chdir (oldwd);
- if (msshell)
+ 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++)
{
- argv[1] = saveargv1;
- argv[2] = saveargv2;
+ 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;
}
- return result;
+
+ /* 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 */
-croak (badfunc)
- char *badfunc;
+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.")
+ ()
{
- fprintf (stderr, "%s not yet implemented\r\n", badfunc);
- reset_sys_modes ();
- exit (1);
+ return (_USE_LFN ? Qt : Qnil);
}
-/* A list of unimplemented functions that we silently ignore. */
-unsigned alarm (s) unsigned s; {}
-fork () { return 0; }
-int kill (x, y) int x, y; { return -1; }
-nice (p) int p; {}
-void volatile pause () {}
-request_sigio () {}
-setpgrp () {return 0; }
-setpriority (x,y,z) int x,y,z; { return 0; }
-sigsetmask (x) int x; { return 0; }
-unrequest_sigio () {}
-
-#ifdef chdir
-#undef chdir
-#endif
+/* Convert alphabetic characters in a filename to lower-case. */
-int
-sys_chdir (path)
- const char* path;
+void
+msdos_downcase_filename (p)
+ register unsigned char *p;
{
- int len = strlen (path);
- char *tmp = (char *) alloca (len + 1);
- /* Gotta do this extern here due to the corresponding #define: */
- extern int chdir ();
-
- if (*path && path[1] == ':' && (getdisk () != tolower (path[0]) - 'a'))
- setdisk (tolower (path[0]) - 'a');
+ /* 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;
+ }
- strcpy (tmp, path);
- if (strcmp (path, "/") && strcmp (path + 1, ":/") && (path[len - 1] == '/'))
- tmp[len - 1] = 0;
- return chdir (tmp);
+ /* 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';
}
-/* Sleep SECS. If KBDOK also return immediately if a key is pressed. */
-void
-sleep_or_kbd_hit (secs, kbdok)
- int secs, kbdok;
+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;
{
- long clnow, clthen;
- struct timeval t;
+ Lisp_Object tem;
- gettimeofday (&t, NULL);
- clnow = t.tv_sec * 100 + t.tv_usec / 10000;
- clthen = clnow + (100 * secs);
+ if (! STRINGP (filename))
+ return Qnil;
- do
- {
- gettimeofday (&t, NULL);
- clnow = t.tv_sec * 100 + t.tv_usec / 10000;
- if (kbdok && detect_input_pending ())
- return;
- }
- while (clnow < clthen);
+ tem = Fcopy_sequence (filename);
+ msdos_downcase_filename (XSTRING (tem)->data);
+ return tem;
}
-
+\f
/* The Emacs root directory as determined by init_environment. */
+
static char emacsroot[MAXPATHLEN];
char *
/* 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 *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". */
- len = strlen (argv[0]);
- root = alloca (len + 10); /* A little extra space for the stuff below. */
- strcpy (root, argv[0]);
+ 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)
+ 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);
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);
- 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);
/* Time zone determined from country code. To make this possible, the
country code may not span more than one time zone. In other words,
in the USA, you lose. */
- switch (dos_country_code)
- {
- case 31: /* Belgium */
- case 32: /* The Netherlands */
- case 33: /* France */
- case 34: /* Spain */
- case 36: /* Hungary */
- case 38: /* Yugoslavia (or what's left of it?) */
- case 39: /* Italy */
- case 41: /* Switzerland */
- case 42: /* Tjekia */
- case 45: /* Denmark */
- case 46: /* Sweden */
- case 47: /* Norway */
- case 48: /* Poland */
- case 49: /* Germany */
- /* Daylight saving from last Sunday in March to last Sunday in
- September, both at 2AM. */
- setenv ("TZ", "MET-01METDST-02,M3.5.0/02:00,M9.5.0/02:00", 0);
- break;
- case 44: /* United Kingdom */
- case 351: /* Portugal */
- case 354: /* Iceland */
- setenv ("TZ", "GMT+00", 0);
- break;
- case 81: /* Japan */
- case 82: /* Korea */
- setenv ("TZ", "???-09", 0);
- break;
- case 90: /* Turkey */
- case 358: /* Finland */
- case 972: /* Israel */
- setenv ("TZ", "EET-02", 0);
- break;
- }
+ 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 ();
- init_gettimeofday ();
}
-/* Flash the screen as a substitute for BEEPs. */
+\f
-static void
-do_visible_bell (xorattr)
- unsigned char xorattr;
+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;
{
- asm volatile
- (" movb $1,%%dl
-visible_bell_0:
- movl _ScreenPrimary,%%eax
- call dosmemsetup
- movl %%eax,%%ebx
- movl %1,%%ecx
- movb %0,%%al
- incl %%ebx
-visible_bell_1:
- xorb %%al,%%gs:(%%ebx)
- addl $2,%%ebx
- decl %%ecx
- jne visible_bell_1
- decb %%dl
- jne visible_bell_3
-visible_bell_2:
- movzwl %%ax,%%eax
- movzwl %%ax,%%eax
- movzwl %%ax,%%eax
- movzwl %%ax,%%eax
- decw %%cx
- jne visible_bell_2
- jmp visible_bell_0
-visible_bell_3:"
- : /* no output */
- : "m" (xorattr), "g" (ScreenCols () * ScreenRows ())
- : "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx");
+ Vquit_flag = Qt;
}
-/* At screen position (X,Y), output C characters from string S with
- attribute A. Do it fast! */
-
-static void
-output_string (x, y, s, c, a)
- int x, y, c;
- unsigned char *s;
- unsigned char a;
+void
+install_ctrl_break_check ()
{
- char *t = (char *)ScreenPrimary + 2 * (x + ScreenCols () * y);
- asm volatile
- (" movl %1,%%eax
- call dosmemsetup
- movl %%eax,%%edi
- movb %0,%%ah
- movl %2,%%ecx
- movl %3,%%esi
-output_string1:
- movb (%%esi),%%al
- movw %%ax,%%gs:(%%edi)
- addl $2,%%edi
- incl %%esi
- decl %%ecx
- jne output_string1"
- : /* no output */
- : "m" (a), "g" (t), "g" (c), "g" (s)
- : "%eax", "%ecx", /* "%gs",*/ "%esi", "%edi");
+ 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);
+ }
}
-static int internal_terminal = 0;
-#undef fflush
+#endif /* __DJGPP__ < 2 */
+
+/* Turn off Dos' Ctrl-C checking and inhibit interpretation of
+ control chars by DOS. Determine the keyboard type. */
int
-internal_flush (f)
- FILE *f;
+dos_ttraw ()
{
- static char spaces[] = " ";
- static int x;
- static int y;
- unsigned char *cp, *cp0;
- int count, i, j;
+ union REGS inregs, outregs;
+ static int first_time = 1;
+
+ break_stat = getcbrk ();
+ setcbrk (0);
+#if __DJGPP__ < 2
+ install_ctrl_break_check ();
+#endif
- if (internal_terminal && f == stdout)
+ if (first_time)
{
- if (have_mouse) mouse_off ();
- cp = stdout->_base;
- count = stdout->_ptr - stdout->_base;
- while (count > 0)
+ 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
+ )
{
- switch (*cp++)
+ inregs.x.ax = 0x0021;
+ int86 (0x33, &inregs, &outregs);
+ have_mouse = (outregs.x.ax & 0xffff) == 0xffff;
+ if (!have_mouse)
{
- case 27:
- switch (*cp++)
+ /* 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)
{
- case '@':
- y = *cp++;
- x = *cp++;
- count -= 4;
- break;
- case 'A':
- ScreenAttrib = *cp++;
- count -= 3;
- break;
- case 'B':
- do_visible_bell (*cp++);
- count -= 3;
- break;
- case 'C':
- ScreenClear ();
- x = y = 0;
- count -= 2;
- break;
- case 'E':
- i = ScreenCols () - x;
- j = x;
- while (i >= sizeof spaces)
- {
- output_string (j, y, spaces, sizeof spaces,
- ScreenAttrib);
- j += sizeof spaces;
- i -= sizeof spaces;
- }
- if (i > 0)
- output_string (j, y, spaces, i, ScreenAttrib);
- count -= 2;
- break;
- case 'R':
- x++;
- count -= 2;
- break;
- case 'U':
- y--;
- count -= 2;
- break;
- case 'X':
- ScreenAttrib ^= *cp++;
- count -= 3;
- break;
- default:
- count -= 2;
+ mouse_button_count = 3;
+ mouse_button_translate[0] = 0; /* Left */
+ mouse_button_translate[1] = 2; /* Middle */
+ mouse_button_translate[2] = 1; /* Right */
}
- break;
- case 7:
- write (1, "\007", 1);
- count--;
- break;
- case 8:
- x--;
- count--;
- break;
- case 13:
- x = 0;
- count--;
- break;
- case 10:
- y++;
- count--;
- break;
- default:
- cp0 = cp - 1;
- count--;
- while (count > 0 && *cp >= ' ')
- cp++, count--;
- output_string (x, y, cp0, cp - cp0, ScreenAttrib);
- x += (cp - cp0);
+ else
+ {
+ mouse_button_count = 2;
+ mouse_button_translate[0] = 0;
+ mouse_button_translate[1] = 1;
+ }
+ mouse_position_hook = &mouse_get_pos;
+ mouse_init ();
}
}
- fpurge (stdout);
- ScreenSetCursor (y, x);
- if (have_mouse) mouse_on ();
+
+ 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
+
+ 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, 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
- /* This is a call to the original fflush. */
- fflush (f);
+
+#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);
}
+\f
+#if __DJGPP__ < 2
-/* Do we need the internal terminal? */
-void
-internal_terminal_init ()
+/* ------------------------- 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 *term = getenv ("TERM");
+ char *q = egetenv ("HOSTNAME");
- internal_terminal
- = (!noninteractive) && term && !strcmp (term, "internal");
+ if (!q) q = "pc";
+ strcpy (p, q);
+ return 0;
}
-\f
-/* When time zones are set from Ms-Dos too may C-libraries are playing
+
+/* 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. */
+ once and after each call to `tzset' with TZ changed. That is
+ accomplished by aliasing tzset to init_gettimeofday. */
-static int daylight, gmtoffset;
+static struct tm time_rec;
int
gettimeofday (struct timeval *tp, struct timezone *tzp)
if (tp)
{
struct time t;
- struct date d;
- struct tm tmrec;
-
+ struct tm tm;
+
gettime (&t);
- getdate (&d);
- tmrec.tm_year = d.da_year - 1900;
- tmrec.tm_mon = d.da_mon - 1;
- tmrec.tm_mday = d.da_day;
- tmrec.tm_hour = t.ti_hour;
- tmrec.tm_min = t.ti_min;
- tmrec.tm_sec = t.ti_sec;
- tmrec.tm_gmtoff = gmtoffset;
- tmrec.tm_isdst = daylight;
- tp->tv_sec = mktime (&tmrec);
+ 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);
}
- if (tzp)
- {
- tzp->tz_minuteswest = gmtoffset;
- tzp->tz_dsttime = daylight;
- }
+ /* Ignore tzp; it's obsolescent. */
return 0;
}
-void
-init_gettimeofday ()
-{
- time_t ltm, gtm;
- struct tm *lstm;
+#endif /* __DJGPP__ < 2 */
- daylight = 0;
- gmtoffset = 0;
- ltm = gtm = time (NULL);
- ltm = mktime (lstm = localtime (<m));
- gtm = mktime (gmtime (>m));
- daylight = lstm->tm_isdst;
- gmtoffset = (int)(gtm - ltm) / 60;
-}
-\f
-/* These must be global. */
-static _go32_dpmi_seginfo ctrl_break_vector;
-static _go32_dpmi_registers ctrl_break_regs;
-static int ctrlbreakinstalled = 0;
+/*
+ * A list of unimplemented functions that we silently ignore.
+ */
-/* Interrupt level detection of Ctrl-Break. Don't do anything fancy here! */
-void
-ctrl_break_func (regs)
- _go32_dpmi_registers *regs;
+#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;
{
- Vquit_flag = Qt;
+ sigaddset (&pending_signals, signo);
}
-void
-install_ctrl_break_check ()
+int
+sigprocmask (how, new_set, old_set)
+ int how;
+ const sigset_t *new_set;
+ sigset_t *old_set;
{
- if (!ctrlbreakinstalled)
+ int signo;
+ sigset_t new_mask;
+
+ /* If called for the first time, initialize. */
+ if (sigprocmask_count != __bss_count)
{
- /* 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);
+ sigprocmask_count = __bss_count;
+ sigemptyset (&pending_signals);
+ sigemptyset (¤t_mask);
+ for (signo = 0; signo < 320; signo++)
+ prev_handlers[signo] = SIG_ERR;
}
-}
-\f
-/* Mouse routines under devellopment follow. Coordinates are in screen
- positions and zero based. Mouse buttons are numbered from left to
- right and also zero based. */
+ if (old_set)
+ *old_set = current_mask;
-static int mouse_button_translate[NUM_MOUSE_BUTTONS];
-static int mouse_button_count;
+ if (new_set == 0)
+ return 0;
-void
-mouse_init ()
-{
- union REGS regs;
+ if (how != SIG_BLOCK && how != SIG_UNBLOCK && how != SIG_SETMASK)
+ {
+ errno = EINVAL;
+ return -1;
+ }
- regs.x.ax = 0x0007;
- regs.x.cx = 0;
- regs.x.dx = 8 * (ScreenCols () - 1);
- int86 (0x33, ®s, ®s);
+ sigemptyset (&new_mask);
- regs.x.ax = 0x0008;
- regs.x.cx = 0;
- regs.x.dx = 8 * (ScreenRows () - 1);
- int86 (0x33, ®s, ®s);
+ /* 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);
- mouse_moveto (ScreenCols () - 1, ScreenRows () - 1);
- mouse_on ();
+ /* 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;
}
-void
-mouse_on ()
-{
- union REGS regs;
+#else /* not POSIX_SIGNALS */
- regs.x.ax = 0x0001;
- int86 (0x33, ®s, ®s);
-}
+sigsetmask (x) int x; { return 0; }
+sigblock (mask) int mask; { return 0; }
-void
-mouse_off ()
-{
- union REGS regs;
+#endif /* not POSIX_SIGNALS */
+#endif /* __DJGPP__ > 1 */
- regs.x.ax = 0x0002;
- int86 (0x33, ®s, ®s);
-}
+#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
-mouse_moveto (x, y)
- int x, y;
+dos_yield_time_slice (void)
{
- union REGS regs;
+ _go32_dpmi_registers r;
- regs.x.ax = 0x0004;
- mouse_last_x = regs.x.cx = x * 8;
- mouse_last_y = regs.x.dx = y * 8;
- int86 (0x33, ®s, ®s);
+ 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
-mouse_pressed (b, xp, yp)
- int b, *xp, *yp;
+sys_select (nfds, rfds, wfds, efds, timeout)
+ int nfds;
+ SELECT_TYPE *rfds, *wfds, *efds;
+ EMACS_TIME *timeout;
{
- union REGS regs;
+ int check_input;
+ struct time t;
- if (b >= mouse_button_count)
- return 0;
- regs.x.ax = 0x0005;
- regs.x.bx = mouse_button_translate[b];
- int86 (0x33, ®s, ®s);
- if (regs.x.bx)
- *xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
- return (regs.x.bx != 0);
+ 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
-mouse_released (b, xp, yp)
- int b, *xp, *yp;
+sys_chdir (path)
+ const char* path;
{
- union REGS regs;
+ int len = strlen (path);
+ char *tmp = (char *)path;
- if (b >= mouse_button_count)
- return 0;
- regs.x.ax = 0x0006;
- regs.x.bx = mouse_button_translate[b];
- int86 (0x33, ®s, ®s);
- if (regs.x.bx)
- *xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
- return (regs.x.bx != 0);
+ 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
-mouse_get_pos (f, bar_window, part, x, y, time)
- FRAME_PTR *f;
- Lisp_Object *bar_window, *x, *y;
- enum scroll_bar_part *part;
- unsigned long *time;
+init_gettimeofday ()
{
- union REGS regs;
- struct timeval tv;
+ time_t ltm, gtm;
+ struct tm *lstm;
- regs.x.ax = 0x0003;
- int86 (0x33, ®s, ®s);
- *f = selected_frame;
- *bar_window = Qnil;
- gettimeofday (&tv, NULL);
- *x = make_number (regs.x.cx);
- *y = make_number (regs.x.dx);
- *time = tv.tv_usec;
- mouse_moved = 0;
+ tzset ();
+ ltm = gtm = time (NULL);
+ ltm = mktime (lstm = localtime (<m));
+ gtm = mktime (gmtime (>m));
+ 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
-mouse_check_moved ()
+dos_abort (file, line)
+ char *file;
+ int line;
{
- union REGS regs;
-
- regs.x.ax = 0x0003;
- int86 (0x33, ®s, ®s);
- if (regs.x.cx != mouse_last_x || regs.x.dx != mouse_last_y)
- {
- mouse_moved = 1;
- mouse_last_x = regs.x.cx;
- mouse_last_y = regs.x.dx;
- }
+ 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 ();
}
-
-int
-mouse_init1 ()
+#else
+void
+abort ()
{
- union REGS regs;
- int present;
-
- regs.x.ax = 0x0021;
- int86 (0x33, ®s, ®s);
- present = internal_terminal && (regs.x.ax & 0xffff) == 0xffff;
- if (present)
- {
- if (regs.x.bx == 3)
- {
- mouse_button_count = 3;
- mouse_button_translate[0] = 0; /* Left */
- mouse_button_translate[1] = 2; /* Middle */
- mouse_button_translate[2] = 1; /* Right */
- }
- else
- {
- mouse_button_count = 2;
- mouse_button_translate[0] = 0;
- mouse_button_translate[1] = 1;
- }
- mouse_position_hook = &mouse_get_pos;
- mouse_init ();
- }
- return present;
+ 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
-/* See xterm.c for more info. */
-void
-pixel_to_glyph_coords (f, pix_x, pix_y, x, y, bounds, noclip)
- FRAME_PTR f;
- register int pix_x, pix_y;
- register int *x, *y;
- void /* XRectangle */ *bounds;
- int noclip;
+/* 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 ()
{
- if (bounds) abort ();
+ 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, ".");
- /* Ignore clipping. */
+ /* The following three are from xfns.c: */
+ Qbackground_color = intern ("background-color");
+ staticpro (&Qbackground_color);
+ Qforeground_color = intern ("foreground-color");
+ staticpro (&Qforeground_color);
- *x = pix_x;
- *y = pix_y;
-}
+ DEFVAR_LISP ("dos-unsupported-char-glyph", &Vdos_unsupported_char_glyph,
+ "*Glyph to display instead of chars not supported by current codepage.\n\
-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;
+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);
}
#endif /* MSDOS */
+
HCoop / bpt / emacs.git / blobdiff