| 1 | /* MS-DOS specific Lisp utilities. Coded by Manabu Higashida, 1991. |
| 2 | Major changes May-July 1993 Morten Welinder (only 10% original code left) |
| 3 | Copyright (C) 1991, 1993 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | |
| 23 | #include <config.h> |
| 24 | |
| 25 | #ifdef MSDOS |
| 26 | /* The entire file is within this conditional */ |
| 27 | |
| 28 | #include <stdio.h> |
| 29 | #include <dos.h> |
| 30 | #include "lisp.h" |
| 31 | #include "buffer.h" |
| 32 | #include "termchar.h" |
| 33 | #include "termhooks.h" |
| 34 | #include "frame.h" |
| 35 | #include "dosfns.h" |
| 36 | #include "msdos.h" |
| 37 | #include <go32.h> |
| 38 | #include <dirent.h> |
| 39 | |
| 40 | DEFUN ("int86", Fint86, Sint86, 2, 2, 0, |
| 41 | "Call specific MSDOS interrupt number INTERRUPT with REGISTERS.\n\ |
| 42 | Return the updated REGISTER vector.\n\ |
| 43 | \n\ |
| 44 | INTERRUPT should be an integer in the range 0 to 255.\n\ |
| 45 | REGISTERS should be a vector produced by `make-register' and\n\ |
| 46 | `set-register-value'.") |
| 47 | (interrupt, registers) |
| 48 | Lisp_Object interrupt, registers; |
| 49 | { |
| 50 | register int i; |
| 51 | int no; |
| 52 | union REGS inregs, outregs; |
| 53 | Lisp_Object val; |
| 54 | |
| 55 | CHECK_NUMBER (interrupt, 0); |
| 56 | no = (unsigned long) XINT (interrupt); |
| 57 | CHECK_VECTOR (registers, 1); |
| 58 | if (no < 0 || no > 0xff || XVECTOR (registers)-> size != 8) |
| 59 | return Qnil; |
| 60 | for (i = 0; i < 8; i++) |
| 61 | CHECK_NUMBER (XVECTOR (registers)->contents[i], 1); |
| 62 | |
| 63 | inregs.x.ax = (unsigned long) XFASTINT (XVECTOR (registers)->contents[0]); |
| 64 | inregs.x.bx = (unsigned long) XFASTINT (XVECTOR (registers)->contents[1]); |
| 65 | inregs.x.cx = (unsigned long) XFASTINT (XVECTOR (registers)->contents[2]); |
| 66 | inregs.x.dx = (unsigned long) XFASTINT (XVECTOR (registers)->contents[3]); |
| 67 | inregs.x.si = (unsigned long) XFASTINT (XVECTOR (registers)->contents[4]); |
| 68 | inregs.x.di = (unsigned long) XFASTINT (XVECTOR (registers)->contents[5]); |
| 69 | inregs.x.cflag = (unsigned long) XFASTINT (XVECTOR (registers)->contents[6]); |
| 70 | inregs.x.flags = (unsigned long) XFASTINT (XVECTOR (registers)->contents[7]); |
| 71 | |
| 72 | int86 (no, &inregs, &outregs); |
| 73 | |
| 74 | XVECTOR (registers)->contents[0] = make_number (outregs.x.ax); |
| 75 | XVECTOR (registers)->contents[1] = make_number (outregs.x.bx); |
| 76 | XVECTOR (registers)->contents[2] = make_number (outregs.x.cx); |
| 77 | XVECTOR (registers)->contents[3] = make_number (outregs.x.dx); |
| 78 | XVECTOR (registers)->contents[4] = make_number (outregs.x.si); |
| 79 | XVECTOR (registers)->contents[5] = make_number (outregs.x.di); |
| 80 | XVECTOR (registers)->contents[6] = make_number (outregs.x.cflag); |
| 81 | XVECTOR (registers)->contents[7] = make_number (outregs.x.flags); |
| 82 | |
| 83 | return registers; |
| 84 | } |
| 85 | |
| 86 | DEFUN ("msdos-memget", Fdos_memget, Sdos_memget, 2, 2, 0, |
| 87 | "Read DOS memory at offset ADDRESS into VECTOR.\n\ |
| 88 | Return the updated VECTOR.") |
| 89 | (address, vector) |
| 90 | Lisp_Object address, vector; |
| 91 | { |
| 92 | register int i; |
| 93 | int offs, len; |
| 94 | char *buf; |
| 95 | Lisp_Object val; |
| 96 | |
| 97 | CHECK_NUMBER (address, 0); |
| 98 | offs = (unsigned long) XINT (address); |
| 99 | CHECK_VECTOR (vector, 1); |
| 100 | len = XVECTOR (vector)-> size; |
| 101 | if (len < 1 || len > 2048 || address < 0 || address > 0xfffff - len) |
| 102 | return Qnil; |
| 103 | buf = alloca (len); |
| 104 | dosmemget (offs, len, buf); |
| 105 | |
| 106 | for (i = 0; i < len; i++) |
| 107 | XVECTOR (vector)->contents[i] = make_number (buf[i]); |
| 108 | |
| 109 | return vector; |
| 110 | } |
| 111 | |
| 112 | DEFUN ("msdos-memput", Fdos_memput, Sdos_memput, 2, 2, 0, |
| 113 | "Write DOS memory at offset ADDRESS from VECTOR.") |
| 114 | (address, vector) |
| 115 | Lisp_Object address, vector; |
| 116 | { |
| 117 | register int i; |
| 118 | int offs, len; |
| 119 | char *buf; |
| 120 | Lisp_Object val; |
| 121 | |
| 122 | CHECK_NUMBER (address, 0); |
| 123 | offs = (unsigned long) XINT (address); |
| 124 | CHECK_VECTOR (vector, 1); |
| 125 | len = XVECTOR (vector)-> size; |
| 126 | if (len < 1 || len > 2048 || address < 0 || address > 0xfffff - len) |
| 127 | return Qnil; |
| 128 | buf = alloca (len); |
| 129 | |
| 130 | for (i = 0; i < len; i++) |
| 131 | { |
| 132 | CHECK_NUMBER (XVECTOR (vector)->contents[i], 1); |
| 133 | buf[i] = (unsigned char) XFASTINT (XVECTOR (vector)->contents[i]) & 0xFF; |
| 134 | } |
| 135 | |
| 136 | dosmemput (buf, len, offs); |
| 137 | return Qt; |
| 138 | } |
| 139 | |
| 140 | DEFUN ("msdos-set-keyboard", Fmsdos_set_keyboard, Smsdos_set_keyboard, 1, 2, 0, |
| 141 | "Set keyboard layout according to COUNTRY-CODE.\n\ |
| 142 | If the optional argument ALLKEYS is non-nil, the keyboard is mapped for\n\ |
| 143 | all keys; otherwise it is only used when the ALT key is pressed.\n\ |
| 144 | The current keyboard layout is available in dos-keyboard-code.") |
| 145 | (country_code, allkeys) |
| 146 | Lisp_Object country_code; |
| 147 | { |
| 148 | CHECK_NUMBER (country_code, 0); |
| 149 | if (!dos_set_keyboard (XINT (country_code), !NILP (allkeys))) |
| 150 | return Qnil; |
| 151 | return Qt; |
| 152 | } |
| 153 | |
| 154 | #ifndef HAVE_X_WINDOWS |
| 155 | /* Later we might want to control the mouse interface with this function, |
| 156 | e.g., with respect to non-80 column screen modes. */ |
| 157 | |
| 158 | DEFUN ("msdos-mouse-p", Fmsdos_mouse_p, Smsdos_mouse_p, 0, 0, 0, "\ |
| 159 | Report whether a mouse is present.") |
| 160 | () |
| 161 | { |
| 162 | if (have_mouse) |
| 163 | return Qt; |
| 164 | else |
| 165 | return Qnil; |
| 166 | } |
| 167 | |
| 168 | /* Function to translate colour names to integers. See lisp/term/pc-win.el |
| 169 | for its definition. */ |
| 170 | |
| 171 | Lisp_Object Qmsdos_color_translate; |
| 172 | #endif |
| 173 | |
| 174 | |
| 175 | DEFUN ("msdos-mouse-init", Fmsdos_mouse_init, Smsdos_mouse_init, 0, 0, "", |
| 176 | "Initialize and enable mouse if available.") |
| 177 | () |
| 178 | { |
| 179 | if (have_mouse) |
| 180 | { |
| 181 | have_mouse = 1; |
| 182 | mouse_init (); |
| 183 | return Qt; |
| 184 | } |
| 185 | return Qnil; |
| 186 | } |
| 187 | |
| 188 | DEFUN ("msdos-mouse-enable", Fmsdos_mouse_enable, Smsdos_mouse_enable, 0, 0, "", |
| 189 | "Enable mouse if available.") |
| 190 | () |
| 191 | { |
| 192 | if (have_mouse) |
| 193 | { |
| 194 | have_mouse = 1; |
| 195 | mouse_on (); |
| 196 | } |
| 197 | return have_mouse ? Qt : Qnil; |
| 198 | } |
| 199 | |
| 200 | DEFUN ("msdos-mouse-disable", Fmsdos_mouse_disable, Smsdos_mouse_disable, 0, 0, "", |
| 201 | "Disable mouse if available.") |
| 202 | () |
| 203 | { |
| 204 | mouse_off (); |
| 205 | if (have_mouse) have_mouse = -1; |
| 206 | return Qnil; |
| 207 | } |
| 208 | |
| 209 | DEFUN ("insert-startup-screen", Finsert_startup_screen, Sinsert_startup_screen, 0, 0, "", "\ |
| 210 | Insert copy of screen contents prior to starting emacs.\n\ |
| 211 | Return nil if startup screen is not available.") |
| 212 | () |
| 213 | { |
| 214 | char *s; |
| 215 | int rows, cols; |
| 216 | int i, j; |
| 217 | |
| 218 | if (!dos_get_saved_screen (&s, &rows, &cols)) |
| 219 | return Qnil; |
| 220 | |
| 221 | for (i = 0; i < rows; i++) |
| 222 | { |
| 223 | for (j = 0; j < cols; j++) |
| 224 | { |
| 225 | insert_char (*s, 1); |
| 226 | s += 2; |
| 227 | } |
| 228 | insert_char ('\n', 1); |
| 229 | } |
| 230 | |
| 231 | return Qt; |
| 232 | } |
| 233 | \f |
| 234 | /* country info */ |
| 235 | int dos_country_code; |
| 236 | int dos_codepage; |
| 237 | int dos_timezone_offset; |
| 238 | int dos_decimal_point; |
| 239 | int dos_keyboard_layout; |
| 240 | unsigned char dos_country_info[DOS_COUNTRY_INFO]; |
| 241 | |
| 242 | int dos_hyper_key; |
| 243 | int dos_super_key; |
| 244 | int dos_keypad_mode; |
| 245 | |
| 246 | Lisp_Object Vdos_version; |
| 247 | Lisp_Object Vdos_display_scancodes; |
| 248 | |
| 249 | void |
| 250 | init_dosfns () |
| 251 | { |
| 252 | union REGS regs; |
| 253 | _go32_dpmi_seginfo info; |
| 254 | _go32_dpmi_registers dpmiregs; |
| 255 | |
| 256 | #ifndef SYSTEM_MALLOC |
| 257 | get_lim_data (); /* why the hell isn't this called elsewhere? */ |
| 258 | #endif |
| 259 | |
| 260 | regs.x.ax = 0x3000; |
| 261 | intdos (®s, ®s); |
| 262 | Vdos_version = Fcons (make_number (regs.h.al), make_number (regs.h.ah)); |
| 263 | |
| 264 | /* Obtain the country code by calling Dos via Dpmi. Don't rely on GO32. */ |
| 265 | info.size = (sizeof(dos_country_info) + 15) / 16; |
| 266 | if (_go32_dpmi_allocate_dos_memory (&info)) |
| 267 | dos_country_code = 1; |
| 268 | else |
| 269 | { |
| 270 | dpmiregs.x.ax = 0x3800; |
| 271 | dpmiregs.x.ds = info.rm_segment; |
| 272 | dpmiregs.x.dx = 0; |
| 273 | dpmiregs.x.ss = dpmiregs.x.sp = 0; |
| 274 | _go32_dpmi_simulate_int (0x21, &dpmiregs); |
| 275 | dos_country_code = dpmiregs.x.bx; |
| 276 | dosmemget (info.rm_segment * 16, DOS_COUNTRY_INFO, dos_country_info); |
| 277 | _go32_dpmi_free_dos_memory (&info); |
| 278 | } |
| 279 | dos_set_keyboard (dos_country_code, 0); |
| 280 | |
| 281 | regs.x.ax = 0x6601; |
| 282 | intdos (®s, ®s); |
| 283 | if (regs.x.cflag) |
| 284 | /* Estimate code page from country code */ |
| 285 | switch (dos_country_code) |
| 286 | { |
| 287 | case 45: /* Denmark */ |
| 288 | case 47: /* Norway */ |
| 289 | dos_codepage = 865; |
| 290 | break; |
| 291 | default: |
| 292 | /* US */ |
| 293 | dos_codepage = 437; |
| 294 | } |
| 295 | else |
| 296 | dos_codepage = regs.x.bx & 0xffff; |
| 297 | |
| 298 | #if __DJGPP__ >= 2 |
| 299 | |
| 300 | /* Without this, we never see hidden files. */ |
| 301 | __opendir_flags |= __OPENDIR_FIND_HIDDEN; |
| 302 | |
| 303 | /* Under LFN, preserve the case of files as recorded in the directory. */ |
| 304 | if (!NILP (Fmsdos_long_file_names ())) |
| 305 | __opendir_flags |= __OPENDIR_PRESERVE_CASE; |
| 306 | |
| 307 | #endif |
| 308 | } |
| 309 | \f |
| 310 | /* |
| 311 | * Define everything |
| 312 | */ |
| 313 | syms_of_dosfns () |
| 314 | { |
| 315 | defsubr (&Sint86); |
| 316 | defsubr (&Sdos_memget); |
| 317 | defsubr (&Sdos_memput); |
| 318 | defsubr (&Smsdos_mouse_init); |
| 319 | defsubr (&Smsdos_mouse_enable); |
| 320 | defsubr (&Smsdos_set_keyboard); |
| 321 | defsubr (&Sinsert_startup_screen); |
| 322 | defsubr (&Smsdos_mouse_disable); |
| 323 | #ifndef HAVE_X_WINDOWS |
| 324 | defsubr (&Smsdos_mouse_p); |
| 325 | Qmsdos_color_translate = intern ("msdos-color-translate"); |
| 326 | staticpro (&Qmsdos_color_translate); |
| 327 | #endif |
| 328 | |
| 329 | DEFVAR_INT ("dos-country-code", &dos_country_code, |
| 330 | "The country code returned by Dos when Emacs was started.\n\ |
| 331 | Usually this is the international telephone prefix."); |
| 332 | |
| 333 | DEFVAR_INT ("dos-codepage", &dos_codepage, |
| 334 | "The codepage active when Emacs was started.\n\ |
| 335 | The following are known:\n\ |
| 336 | 437 United States\n\ |
| 337 | 850 Multilingual (Latin I)\n\ |
| 338 | 852 Slavic (Latin II)\n\ |
| 339 | 857 Turkish\n\ |
| 340 | 860 Portugal\n\ |
| 341 | 861 Iceland\n\ |
| 342 | 863 Canada (French)\n\ |
| 343 | 865 Norway/Denmark"); |
| 344 | |
| 345 | DEFVAR_INT ("dos-timezone-offset", &dos_timezone_offset, |
| 346 | "The current timezone offset to UTC in minutes. |
| 347 | Implicitly modified when the TZ variable is changed."); |
| 348 | |
| 349 | DEFVAR_LISP ("dos-version", &Vdos_version, |
| 350 | "The (MAJOR . MINOR) Dos version (subject to modification with setver)."); |
| 351 | |
| 352 | DEFVAR_LISP ("dos-display-scancodes", &Vdos_display_scancodes, |
| 353 | "*When non-nil, the keyboard scan-codes are displayed at the bottom right\n\ |
| 354 | corner of the display (typically at the end of the mode line).\n\ |
| 355 | The output format is: scan code:char code*modifiers."); |
| 356 | Vdos_display_scancodes = Qnil; |
| 357 | |
| 358 | DEFVAR_INT ("dos-hyper-key", &dos_hyper_key, |
| 359 | "*If set to 1, use right ALT key as hyper key.\n\ |
| 360 | If set to 2, use right CTRL key as hyper key."); |
| 361 | dos_hyper_key = 0; |
| 362 | |
| 363 | DEFVAR_INT ("dos-super-key", &dos_super_key, |
| 364 | "*If set to 1, use right ALT key as super key.\n\ |
| 365 | If set to 2, use right CTRL key as super key."); |
| 366 | dos_super_key = 0; |
| 367 | |
| 368 | DEFVAR_INT ("dos-keypad-mode", &dos_keypad_mode, |
| 369 | "*Controls what key code is returned by a key in the numeric keypad.\n\ |
| 370 | The `numlock ON' action is only taken if no modifier keys are pressed.\n\ |
| 371 | The value is an integer constructed by adding the following bits together:\n\ |
| 372 | \n\ |
| 373 | 0x00 Digit key returns digit (if numlock ON)\n\ |
| 374 | 0x01 Digit key returns kp-digit (if numlock ON)\n\ |
| 375 | 0x02 Digit key returns M-digit (if numlock ON)\n\ |
| 376 | 0x03 Digit key returns edit key (if numlock ON)\n\ |
| 377 | \n\ |
| 378 | 0x00 Grey key returns char (if numlock ON)\n\ |
| 379 | 0x04 Grey key returns kp-key (if numlock ON)\n\ |
| 380 | \n\ |
| 381 | 0x00 Digit key returns digit (if numlock OFF)\n\ |
| 382 | 0x10 Digit key returns kp-digit (if numlock OFF)\n\ |
| 383 | 0x20 Digit key returns M-digit (if numlock OFF)\n\ |
| 384 | 0x30 Digit key returns edit key (if numlock OFF)\n\ |
| 385 | \n\ |
| 386 | 0x00 Grey key returns char (if numlock OFF)\n\ |
| 387 | 0x40 Grey key returns kp-key (if numlock OFF)\n\ |
| 388 | \n\ |
| 389 | 0x200 ALT-0..ALT-9 in top-row produces shifted codes."); |
| 390 | dos_keypad_mode = 0x75; |
| 391 | |
| 392 | DEFVAR_INT ("dos-keyboard-layout", &dos_keyboard_layout, |
| 393 | "Contains the country code for the current keyboard layout.\n\ |
| 394 | Use msdos-set-keyboard to select another keyboard layout."); |
| 395 | dos_keyboard_layout = 1; /* US */ |
| 396 | |
| 397 | DEFVAR_INT ("dos-decimal-point", &dos_decimal_point, |
| 398 | "If non-zero, it contains the character to be returned when the\n\ |
| 399 | decimal point key in the numeric keypad is pressed when Num Lock is on.\n\ |
| 400 | If zero, the decimal point key returns the country code specific value."); |
| 401 | dos_decimal_point = 0; |
| 402 | } |
| 403 | #endif /* MSDOS */ |