lisp/w32-fns.el

   1 ;;; w32-fns.el --- Lisp routines for Windows NT.
   2
   3 ;; Copyright (C) 1994 Free Software Foundation, Inc.
   4
   5 ;; Author: Geoff Voelker <voelker@cs.washington.edu>
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software; you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation; either version 2, or (at your option)
  12 ;; any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22 ;; Boston, MA 02111-1307, USA.
  23
  24 ;;; Commentary:
  25
  26 ;; (August 12, 1993)
  27 ;; Created.
  28
  29 ;; (November 21, 1994)
  30 ;; [C-M-backspace] defined.
  31 ;; mode-line-format defined to show buffer file type.
  32 ;; audio bell initialized.
  33
  34 ;;; Code:
  35
  36 ;; Map delete and backspace
  37 (define-key function-key-map [backspace] "\177")
  38 (define-key function-key-map [delete] "\C-d")
  39 (define-key function-key-map [M-backspace] [?\M-\177])
  40 (define-key function-key-map [C-M-backspace] [\C-\M-delete])
  41
  42 ;; Ignore case on file-name completion
  43 (setq completion-ignore-case t)
  44
  45 ;; Map all versions of a filename (8.3, longname, mixed case) to the
  46 ;; same buffer.
  47 (setq find-file-visit-truename t)
  48
  49 (defun w32-version ()
  50   "Return the MS-Windows version numbers.
  51 The value is a list of three integers: the major and minor version
  52 numbers, and the build number."
  53   (x-server-version))
  54
  55 (defvar w32-system-shells '("cmd" "cmd.exe" "command" "command.com"
  56                             "4nt" "4nt.exe" "4dos" "4dos.exe"
  57                             "ndos" "ndos.exe")
  58   "List of strings recognized as Windows NT/9X system shells.")
  59
  60 (defun w32-using-nt ()
  61   "Return non-nil if literally running on Windows NT (i.e., not Windows 9X)."
  62   (and (eq system-type 'windows-nt) (getenv "SystemRoot")))
  63
  64 (defun w32-shell-name ()
  65   "Return the name of the shell being used."
  66   (or (and (boundp 'explicit-shell-file-name) explicit-shell-file-name)
  67       (getenv "ESHELL")
  68       (getenv "SHELL")
  69       (and (w32-using-nt) "cmd.exe")
  70       "command.com"))
  71
  72 (defun w32-system-shell-p (shell-name)
  73   (and shell-name
  74        (member (downcase (file-name-nondirectory shell-name))
  75                w32-system-shells)))
  76
  77 (defun w32-shell-dos-semantics ()
  78   "Return t if the interactive shell being used expects msdos shell semantics."
  79   (or (w32-system-shell-p (w32-shell-name))
  80       (and (member (downcase (file-name-nondirectory (w32-shell-name)))
  81                    '("cmdproxy" "cmdproxy.exe"))
  82            (w32-system-shell-p (getenv "COMSPEC")))))
  83
  84 (defvar w32-allow-system-shell nil
  85   "*Disable startup warning when using \"system\" shells.")
  86
  87 (defun w32-check-shell-configuration ()
  88   "Check the configuration of shell variables on Windows NT/9X.
  89 This function is invoked after loading the init files and processing
  90 the command line arguments.  It issues a warning if the user or site
  91 has configured the shell with inappropriate settings."
  92   (interactive)
  93   (let ((prev-buffer (current-buffer))
  94         (buffer (get-buffer-create "*Shell Configuration*"))
  95         (system-shell))
  96     (set-buffer buffer)
  97     (erase-buffer)
  98     (if (w32-system-shell-p (getenv "ESHELL"))
  99         (insert (format "Warning! The ESHELL environment variable uses %s.
 100 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 101                         (getenv "ESHELL"))))
 102     (if (w32-system-shell-p (getenv "SHELL"))
 103         (insert (format "Warning! The SHELL environment variable uses %s.
 104 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 105                         (getenv "SHELL"))))
 106     (if (w32-system-shell-p shell-file-name)
 107         (insert (format "Warning! shell-file-name uses %s.
 108 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 109                         shell-file-name)))
 110     (if (and (boundp 'explicit-shell-file-name)
 111              (w32-system-shell-p explicit-shell-file-name))
 112         (insert (format "Warning! explicit-shell-file-name uses %s.
 113 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 114                         explicit-shell-file-name)))
 115     (setq system-shell (> (buffer-size) 0))
 116
 117     ;; Allow user to specify that they really do want to use one of the
 118     ;; "system" shells, despite the drawbacks, but still warn if
 119     ;; shell-command-switch doesn't match.
 120     (if w32-allow-system-shell
 121         (erase-buffer))
 122
 123     (cond (system-shell
 124            ;; System shells.
 125            (if (string-equal "-c" shell-command-switch)
 126                (insert "Warning! shell-command-switch is \"-c\".
 127 You should set this to \"/c\" when using a system shell.\n\n"))
 128            (if w32-quote-process-args
 129                (insert "Warning! w32-quote-process-args is t.
 130 You should set this to nil when using a system shell.\n\n")))
 131           ;; Non-system shells.
 132           (t
 133            (if (string-equal "/c" shell-command-switch)
 134                (insert "Warning! shell-command-switch is \"/c\".
 135 You should set this to \"-c\" when using a non-system shell.\n\n"))
 136            (if (not w32-quote-process-args)
 137                (insert "Warning! w32-quote-process-args is nil.
 138 You should set this to t when using a non-system shell.\n\n"))))
 139     (if (> (buffer-size) 0)
 140         (display-buffer buffer)
 141       (kill-buffer buffer))
 142     (set-buffer prev-buffer)))
 143
 144 (add-hook 'after-init-hook 'w32-check-shell-configuration)
 145
 146 ;;; Override setting chosen at startup.
 147 (defun set-default-process-coding-system ()
 148   ;; Most programs on Windows will accept Unix line endings on input
 149   ;; (and some programs ported from Unix require it) but most will
 150   ;; produce DOS line endings on output.
 151   (setq default-process-coding-system
 152         (if default-enable-multibyte-characters
 153             '(undecided-dos . undecided-unix)
 154           '(raw-text-dos . raw-text-unix)))
 155   (or (w32-using-nt)
 156       ;; On Windows 9x, make cmdproxy default to using DOS line endings
 157       ;; for input, because command.com requires this.
 158       (setq process-coding-system-alist
 159             `(("[cC][mM][dD][pP][rR][oO][xX][yY]"
 160                . ,(if default-enable-multibyte-characters
 161                       '(undecided-dos . undecided-dos)
 162                     '(raw-text-dos . raw-text-dos)))))))
 163
 164 (add-hook 'before-init-hook 'set-default-process-coding-system)
 165
 166
 167 ;;; Basic support functions for managing Emacs' locale setting
 168
 169 (defvar w32-valid-locales nil
 170   "List of locale ids known to be supported.")
 171
 172 ;;; This is the brute-force version; an efficient version is now
 173 ;;; built-in though.
 174 (if (not (fboundp 'w32-get-valid-locale-ids))
 175     (defun w32-get-valid-locale-ids ()
 176       "Return list of all valid Windows locale ids."
 177       (let ((i 65535)
 178             locales)
 179         (while (> i 0)
 180           (if (w32-get-locale-info i)
 181               (setq locales (cons i locales)))
 182           (setq i (1- i)))
 183         locales)))
 184
 185 (defun w32-list-locales ()
 186   "List the name and id of all locales supported by Windows."
 187   (interactive)
 188   (if (null w32-valid-locales)
 189       (setq w32-valid-locales (w32-get-valid-locale-ids)))
 190   (switch-to-buffer-other-window (get-buffer-create "*Supported Locales*"))
 191   (erase-buffer)
 192   (insert "LCID\tAbbrev\tFull name\n\n")
 193   (insert (mapconcat
 194            '(lambda (x)
 195               (format "%d\t%s\t%s"
 196                       x
 197                       (w32-get-locale-info x)
 198                       (w32-get-locale-info x t)))
 199            w32-valid-locales "\n"))
 200   (insert "\n")
 201   (goto-char (point-min)))
 202
 203
 204 ;;; Setup Info-default-directory-list to include the info directory
 205 ;;; near where Emacs executable was installed.  We used to set INFOPATH,
 206 ;;; but when this is set Info-default-directory-list is ignored.  We
 207 ;;; also cannot rely upon what is set in paths.el because they assume
 208 ;;; that configuration during build time is correct for runtime.
 209 (defun w32-init-info ()
 210   (let* ((instdir (file-name-directory invocation-directory))
 211          (dir1 (expand-file-name "../info/" instdir))
 212          (dir2 (expand-file-name "../../../info/" instdir)))
 213     (if (file-exists-p dir1)
 214         (setq Info-default-directory-list
 215               (append Info-default-directory-list (list dir1)))
 216       (if (file-exists-p dir2)
 217           (setq Info-default-directory-list
 218                 (append Info-default-directory-list (list dir2)))))))
 219
 220 (add-hook 'before-init-hook 'w32-init-info)
 221
 222 ;;; The variable source-directory is used to initialize Info-directory-list.
 223 ;;; However, the common case is that Emacs is being used from a binary
 224 ;;; distribution, and the value of source-directory is meaningless in that
 225 ;;; case.  Even worse, source-directory can refer to a directory on a drive
 226 ;;; on the build machine that happens to be a removable drive on the user's
 227 ;;; machine.  When this happens, Emacs tries to access the removable drive
 228 ;;; and produces the abort/retry/ignore dialog.  Since we do not use
 229 ;;; source-directory, set it to something that is a reasonable approximation
 230 ;;; on the user's machine.
 231
 232 ;(add-hook 'before-init-hook
 233 ;         '(lambda ()
 234 ;            (setq source-directory (file-name-as-directory
 235 ;                                    (expand-file-name ".." exec-directory)))))
 236
 237 ;; Avoid creating auto-save file names containing invalid characters.
 238 (fset 'original-make-auto-save-file-name
 239       (symbol-function 'make-auto-save-file-name))
 240
 241 (defun make-auto-save-file-name ()
 242   "Return file name to use for auto-saves of current buffer.
 243 Does not consider `auto-save-visited-file-name' as that variable is checked
 244 before calling this function.  You can redefine this for customization.
 245 See also `auto-save-file-name-p'."
 246   (let ((filename (original-make-auto-save-file-name)))
 247     ;; Don't modify remote (ange-ftp) filenames
 248     (if (string-match "^/\\w+@[-A-Za-z0-9._]+:" filename)
 249         filename
 250       (convert-standard-filename filename))))
 251
 252 (defun convert-standard-filename (filename)
 253   "Convert a standard file's name to something suitable for the current OS.
 254 This function's standard definition is trivial; it just returns the argument.
 255 However, on some systems, the function is redefined
 256 with a definition that really does change some file names."
 257   (let ((name (copy-sequence filename))
 258         (start 0))
 259     ;; leave ':' if part of drive specifier
 260     (if (and (> (length name) 1)
 261              (eq (aref name 1) ?:))
 262         (setq start 2))
 263     ;; destructively replace invalid filename characters with !
 264     (while (string-match "[?*:<>|\"\000-\037]" name start)
 265       (aset name (match-beginning 0) ?!)
 266       (setq start (match-end 0)))
 267     ;; convert directory separators to Windows format
 268     ;; (but only if the shell in use requires it)
 269     (when (w32-shell-dos-semantics)
 270       (setq start 0)
 271       (while (string-match "/" name start)
 272         (aset name (match-beginning 0) ?\\)
 273         (setq start (match-end 0))))
 274     name))
 275
 276 ;;; Fix interface to (X-specific) mouse.el
 277 (defun x-set-selection (type data)
 278   (or type (setq type 'PRIMARY))
 279   (put 'x-selections type data))
 280
 281 (defun x-get-selection (&optional type data-type)
 282   (or type (setq type 'PRIMARY))
 283   (get 'x-selections type))
 284
 285 (defun set-w32-system-coding-system (coding-system)
 286   "Set the coding system used by the Windows System to CODING-SYSTEM.
 287 This is used for things like passing font names with non-ASCII
 288 characters in them to the system. For a list of possible values of
 289 CODING-SYSTEM, use \\[list-coding-systems]."
 290   (interactive
 291    (list (let ((default w32-system-coding-system))
 292            (read-coding-system
 293             (format "Coding system for system calls (default, %s): "
 294                     default)
 295             default))))
 296   (check-coding-system coding-system)
 297   (setq w32-system-coding-system coding-system))
 298 ;; Set system coding system initially to iso-latin-1
 299 (set-w32-system-coding-system 'iso-latin-1)
 300
 301 ;;; Set to a system sound if you want a fancy bell.
 302 (set-message-beep nil)
 303
 304 ;;; The "Windows" keys on newer keyboards bring up the Start menu
 305 ;;; whether you want it or not - make Emacs ignore these keystrokes
 306 ;;; rather than beep.
 307 (global-set-key [lwindow] 'ignore)
 308 (global-set-key [rwindow] 'ignore)
 309
 310 ;; Map certain keypad keys into ASCII characters
 311 ;; that people usually expect.
 312 (define-key function-key-map [tab] [?\t])
 313 (define-key function-key-map [linefeed] [?\n])
 314 (define-key function-key-map [clear] [11])
 315 (define-key function-key-map [return] [13])
 316 (define-key function-key-map [escape] [?\e])
 317 (define-key function-key-map [M-tab] [?\M-\t])
 318 (define-key function-key-map [M-linefeed] [?\M-\n])
 319 (define-key function-key-map [M-clear] [?\M-\013])
 320 (define-key function-key-map [M-return] [?\M-\015])
 321 (define-key function-key-map [M-escape] [?\M-\e])
 322
 323 ;; These don't do the right thing (voelker)
 324 ;(define-key function-key-map [backspace] [127])
 325 ;(define-key function-key-map [delete] [127])
 326 ;(define-key function-key-map [M-backspace] [?\M-\d])
 327 ;(define-key function-key-map [M-delete] [?\M-\d])
 328
 329 ;; These tell read-char how to convert
 330 ;; these special chars to ASCII.
 331 (put 'tab 'ascii-character ?\t)
 332 (put 'linefeed 'ascii-character ?\n)
 333 (put 'clear 'ascii-character 12)
 334 (put 'return 'ascii-character 13)
 335 (put 'escape 'ascii-character ?\e)
 336 (put 'backspace 'ascii-character 127)
 337 (put 'delete 'ascii-character 127)
 338
 339 ;; W32 uses different color indexes than standard:
 340
 341 (defvar w32-tty-standard-colors
 342   '(("white"         15 65535 65535 65535)
 343     ("yellow"        14 65535 65535     0) ; Yellow
 344     ("lightmagenta"  13 65535     0 65535) ; Magenta
 345     ("lightred"      12 65535     0     0) ; Red
 346     ("lightcyan"     11     0 65535 65535) ; Cyan
 347     ("lightgreen"    10     0 65535     0) ; Green
 348     ("lightblue"      9     0     0 65535) ; Blue
 349     ("darkgray"       8 26112 26112 26112) ; Gray40
 350     ("lightgray"      7 48640 48640 48640) ; Gray
 351     ("brown"          6 40960 20992 11520) ; Sienna
 352     ("magenta"        5 35584     0 35584) ; DarkMagenta
 353     ("red"            4 45568  8704  8704) ; FireBrick
 354     ("cyan"           3     0 52736 53504) ; DarkTurquoise
 355     ("green"          2  8704 35584  8704) ; ForestGreen
 356     ("blue"           1     0     0 52480) ; MediumBlue
 357     ("black"          0     0     0     0))
 358 "A list of VGA console colors, their indices and 16-bit RGB values.")
 359
 360
 361 (defun w32-add-charset-info (xlfd-charset windows-charset codepage)
 362   "Function to add character sets to display with Windows fonts.
 363 Creates entries in `w32-charset-info-alist'.
 364 XLFD-CHARSET is a string which will appear in the XLFD font name to
 365 identify the character set. WINDOWS-CHARSET is a symbol identifying
 366 the Windows character set this maps to. For the list of possible
 367 values, see the documentation for `w32-charset-info-alist'. CODEPAGE
 368 can be a numeric codepage that Windows uses to display the character
 369 set, t for Unicode output with no codepage translation or nil for 8
 370 bit output with no translation."
 371   (add-to-list 'w32-charset-info-alist
 372                (cons xlfd-charset (cons windows-charset codepage)))
 373   )
 374
 375 (w32-add-charset-info "iso8859-1" 'w32-charset-ansi 1252)
 376 (w32-add-charset-info "iso8859-14" 'w32-charset-ansi  28604)
 377 (w32-add-charset-info "iso8859-15" 'w32-charset-ansi  28605)
 378 (w32-add-charset-info "jisx0208-sjis" 'w32-charset-shiftjis 932)
 379 (w32-add-charset-info "jisx0201-latin" 'w32-charset-shiftjis 932)
 380 (w32-add-charset-info "jisx0201-katakana" 'w32-charset-shiftjis 932)
 381 (w32-add-charset-info "ksc5601.1987" 'w32-charset-hangeul 949)
 382 (w32-add-charset-info "big5" 'w32-charset-chinesebig5 950)
 383 (w32-add-charset-info "gb2312" 'w32-charset-gb2312 936)
 384 (w32-add-charset-info "ms-symbol" 'w32-charset-symbol nil)
 385 (w32-add-charset-info "ms-oem" 'w32-charset-oem 437)
 386 (w32-add-charset-info "ms-oemlatin" 'w32-charset-oem 850)
 387 (if (boundp 'w32-extra-charsets-defined)
 388     (progn
 389       (w32-add-charset-info "iso8859-2" 'w32-charset-easteurope 28592)
 390       (w32-add-charset-info "iso8859-3" 'w32-charset-turkish 28593)
 391       (w32-add-charset-info "iso8859-4" 'w32-charset-baltic 28594)
 392       (w32-add-charset-info "iso8859-5" 'w32-charset-russian 28595)
 393       (w32-add-charset-info "iso8859-6" 'w32-charset-arabic 28596)
 394       (w32-add-charset-info "iso8859-7" 'w32-charset-greek 28597)
 395       (w32-add-charset-info "iso8859-8" 'w32-charset-hebrew 1255)
 396       (w32-add-charset-info "iso8859-9" 'w32-charset-turkish 1254)
 397       (w32-add-charset-info "iso8859-13" 'w32-charset-baltic 1257)
 398       (w32-add-charset-info "koi8-r" 'w32-charset-russian 20866)
 399       (w32-add-charset-info "tis620" 'w32-charset-thai 874)
 400       (w32-add-charset-info "ksc5601.1992" 'w32-charset-johab 1361)
 401       (w32-add-charset-info "mac" 'w32-charset-mac nil)))
 402 (if (boundp 'w32-unicode-charset-defined)
 403     (progn
 404       (w32-add-charset-info "iso10646" 'w32-charset-unicode t)
 405       (w32-add-charset-info "unicode" 'w32-charset-unicode t)))
 406
 407
 408 (make-obsolete-variable 'w32-enable-italics
 409                         'w32-enable-synthesized-fonts "21.1")
 410 (make-obsolete-variable 'w32-charset-to-codepage-alist
 411                         'w32-charset-info-alist "21.1")
 412
 413 \f
 414 ;;;; Selections and cut buffers
 415
 416 ;;; We keep track of the last text selected here, so we can check the
 417 ;;; current selection against it, and avoid passing back our own text
 418 ;;; from x-cut-buffer-or-selection-value.
 419 (defvar x-last-selected-text nil)
 420
 421 ;;; It is said that overlarge strings are slow to put into the cut buffer.
 422 ;;; Note this value is overridden below.
 423 (defvar x-cut-buffer-max 20000
 424   "Max number of characters to put in the cut buffer.")
 425
 426 (defcustom x-select-enable-clipboard t
 427   "Non-nil means cutting and pasting uses the clipboard.
 428 This is in addition to the primary selection."
 429   :type 'boolean
 430   :group 'killing)
 431
 432 (defun x-select-text (text &optional push)
 433   "Make TEXT the last selected text.
 434 If `x-select-enable-clipboard' is non-nil, copy the text to the system
 435 clipboard as well. Optional PUSH is ignored on Windows."
 436   (if x-select-enable-clipboard
 437       (w32-set-clipboard-data text))
 438   (setq x-last-selected-text text))
 439
 440 (defun x-get-selection-value ()
 441   "Return the value of the current selection.
 442 Consult the selection, then the cut buffer.  Treat empty strings as if
 443 they were unset."
 444   (if x-select-enable-clipboard
 445       (let (text)
 446         ;; Don't die if x-get-selection signals an error.
 447         (condition-case c
 448             (setq text (w32-get-clipboard-data))
 449           (error (message "w32-get-clipboard-data:%s" c)))
 450         (if (string= text "") (setq text nil))
 451         (cond
 452          ((not text) nil)
 453          ((eq text x-last-selected-text) nil)
 454          ((string= text x-last-selected-text)
 455           ;; Record the newer string, so subsequent calls can use the 'eq' test.
 456           (setq x-last-selected-text text)
 457           nil)
 458          (t
 459           (setq x-last-selected-text text))))))
 460 \f
 461 (defalias 'x-cut-buffer-or-selection-value 'x-get-selection-value)
 462
 463 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 464 (setq interprogram-cut-function 'x-select-text)
 465 (setq interprogram-paste-function 'x-get-selection-value)
 466
 467
 468 ;;; w32-fns.el ends here