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 (defvar w32-system-shells '("cmd" "cmd.exe" "command" "command.com"
  50                             "4nt" "4nt.exe" "4dos" "4dos.exe"
  51                             "ndos" "ndos.exe")
  52   "List of strings recognized as Windows NT/9X system shells.")
  53
  54 (defun w32-using-nt ()
  55   "Return t if literally running on Windows NT (i.e., not Windows 9X)."
  56   (and (eq system-type 'windows-nt) (getenv "SystemRoot")))
  57
  58 (defun w32-shell-name ()
  59   "Return the name of the shell being used."
  60   (or (and (boundp 'explicit-shell-file-name) explicit-shell-file-name)
  61       (getenv "ESHELL")
  62       (getenv "SHELL")
  63       (and (w32-using-nt) "cmd.exe")
  64       "command.com"))
  65
  66 (defun w32-system-shell-p (shell-name)
  67   (and shell-name
  68        (member (downcase (file-name-nondirectory shell-name))
  69                w32-system-shells)))
  70
  71 (defun w32-shell-dos-semantics ()
  72   "Return t if the interactive shell being used expects msdos shell semantics."
  73   (or (w32-system-shell-p (w32-shell-name))
  74       (and (member (downcase (file-name-nondirectory (w32-shell-name)))
  75                    '("cmdproxy" "cmdproxy.exe"))
  76            (w32-system-shell-p (getenv "COMSPEC")))))
  77
  78 (defvar w32-allow-system-shell nil
  79   "*Disable startup warning when using \"system\" shells.")
  80
  81 (defun w32-check-shell-configuration ()
  82   "Check the configuration of shell variables on Windows NT/9X.
  83 This function is invoked after loading the init files and processing
  84 the command line arguments.  It issues a warning if the user or site
  85 has configured the shell with inappropriate settings."
  86   (interactive)
  87   (let ((prev-buffer (current-buffer))
  88         (buffer (get-buffer-create "*Shell Configuration*"))
  89         (system-shell))
  90     (set-buffer buffer)
  91     (erase-buffer)
  92     (if (w32-system-shell-p (getenv "ESHELL"))
  93         (insert (format "Warning! The ESHELL environment variable uses %s.
  94 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
  95                         (getenv "ESHELL"))))
  96     (if (w32-system-shell-p (getenv "SHELL"))
  97         (insert (format "Warning! The SHELL environment variable uses %s.
  98 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
  99                         (getenv "SHELL"))))
 100     (if (w32-system-shell-p shell-file-name)
 101         (insert (format "Warning! shell-file-name uses %s.
 102 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 103                         shell-file-name)))
 104     (if (and (boundp 'explicit-shell-file-name)
 105              (w32-system-shell-p explicit-shell-file-name))
 106         (insert (format "Warning! explicit-shell-file-name uses %s.
 107 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 108                         explicit-shell-file-name)))
 109     (setq system-shell (> (buffer-size) 0))
 110
 111     ;; Allow user to specify that they really do want to use one of the
 112     ;; "system" shells, despite the drawbacks, but still warn if
 113     ;; shell-command-switch doesn't match.
 114     (if w32-allow-system-shell
 115         (erase-buffer))
 116
 117     (cond (system-shell
 118            ;; System shells.
 119            (if (string-equal "-c" shell-command-switch)
 120                (insert "Warning! shell-command-switch is \"-c\".
 121 You should set this to \"/c\" when using a system shell.\n\n"))
 122            (if w32-quote-process-args
 123                (insert "Warning! w32-quote-process-args is t.
 124 You should set this to nil when using a system shell.\n\n")))
 125           ;; Non-system shells.
 126           (t
 127            (if (string-equal "/c" shell-command-switch)
 128                (insert "Warning! shell-command-switch is \"/c\".
 129 You should set this to \"-c\" when using a non-system shell.\n\n"))
 130            (if (not w32-quote-process-args)
 131                (insert "Warning! w32-quote-process-args is nil.
 132 You should set this to t when using a non-system shell.\n\n"))))
 133     (if (> (buffer-size) 0)
 134         (display-buffer buffer)
 135       (kill-buffer buffer))
 136     (set-buffer prev-buffer)))
 137
 138 (add-hook 'after-init-hook 'w32-check-shell-configuration)
 139
 140 ;;; Override setting chosen at startup.
 141 (defun set-default-process-coding-system ()
 142   ;; Most programs on Windows will accept Unix line endings on input
 143   ;; (and some programs ported from Unix require it) but most will
 144   ;; produce DOS line endings on output.
 145   (setq default-process-coding-system
 146         (if default-enable-multibyte-characters
 147             '(undecided-dos . undecided-unix)
 148           '(raw-text-dos . raw-text-unix)))
 149   (or (w32-using-nt)
 150       ;; On Windows 9x, make cmdproxy default to using DOS line endings
 151       ;; for input, because command.com requires this.
 152       (setq process-coding-system-alist
 153             `(("[cC][mM][dD][pP][rR][oO][xX][yY]"
 154                . ,(if default-enable-multibyte-characters
 155                       '(undecided-dos . undecided-dos)
 156                     '(raw-text-dos . raw-text-dos)))))))
 157
 158 (add-hook 'before-init-hook 'set-default-process-coding-system)
 159
 160
 161 ;;; Basic support functions for managing Emacs' locale setting
 162
 163 (defvar w32-valid-locales nil
 164   "List of locale ids known to be supported.")
 165
 166 ;;; This is the brute-force version; an efficient version is now
 167 ;;; built-in though.
 168 (if (not (fboundp 'w32-get-valid-locale-ids))
 169     (defun w32-get-valid-locale-ids ()
 170       "Return list of all valid Windows locale ids."
 171       (let ((i 65535)
 172             locales)
 173         (while (> i 0)
 174           (if (w32-get-locale-info i)
 175               (setq locales (cons i locales)))
 176           (setq i (1- i)))
 177         locales)))
 178
 179 (defun w32-list-locales ()
 180   "List the name and id of all locales supported by Windows."
 181   (interactive)
 182   (if (null w32-valid-locales)
 183       (setq w32-valid-locales (w32-get-valid-locale-ids)))
 184   (switch-to-buffer-other-window (get-buffer-create "*Supported Locales*"))
 185   (erase-buffer)
 186   (insert "LCID\tAbbrev\tFull name\n\n")
 187   (insert (mapconcat
 188            '(lambda (x)
 189               (format "%d\t%s\t%s"
 190                       x
 191                       (w32-get-locale-info x)
 192                       (w32-get-locale-info x t)))
 193            w32-valid-locales "\n"))
 194   (insert "\n")
 195   (goto-char (point-min)))
 196
 197
 198 ;;; Setup Info-default-directory-list to include the info directory
 199 ;;; near where Emacs executable was installed.  We used to set INFOPATH,
 200 ;;; but when this is set Info-default-directory-list is ignored.  We
 201 ;;; also cannot rely upon what is set in paths.el because they assume
 202 ;;; that configuration during build time is correct for runtime.
 203 (defun w32-init-info ()
 204   (let* ((instdir (file-name-directory invocation-directory))
 205          (dir1 (expand-file-name "../info/" instdir))
 206          (dir2 (expand-file-name "../../../info/" instdir)))
 207     (if (file-exists-p dir1)
 208         (setq Info-default-directory-list
 209               (append Info-default-directory-list (list dir1)))
 210       (if (file-exists-p dir2)
 211           (setq Info-default-directory-list
 212                 (append Info-default-directory-list (list dir2)))))))
 213
 214 (add-hook 'before-init-hook 'w32-init-info)
 215
 216 ;;; The variable source-directory is used to initialize Info-directory-list.
 217 ;;; However, the common case is that Emacs is being used from a binary
 218 ;;; distribution, and the value of source-directory is meaningless in that
 219 ;;; case.  Even worse, source-directory can refer to a directory on a drive
 220 ;;; on the build machine that happens to be a removable drive on the user's
 221 ;;; machine.  When this happens, Emacs tries to access the removable drive
 222 ;;; and produces the abort/retry/ignore dialog.  Since we do not use
 223 ;;; source-directory, set it to something that is a reasonable approximation
 224 ;;; on the user's machine.
 225
 226 (add-hook 'before-init-hook
 227           '(lambda ()
 228              (setq source-directory (file-name-as-directory
 229                                      (expand-file-name ".." exec-directory)))))
 230
 231 ;; Avoid creating auto-save file names containing invalid characters.
 232 (fset 'original-make-auto-save-file-name
 233       (symbol-function 'make-auto-save-file-name))
 234
 235 (defun make-auto-save-file-name ()
 236   "Return file name to use for auto-saves of current buffer.
 237 Does not consider `auto-save-visited-file-name' as that variable is checked
 238 before calling this function.  You can redefine this for customization.
 239 See also `auto-save-file-name-p'."
 240   (convert-standard-filename (original-make-auto-save-file-name)))
 241
 242 (defun convert-standard-filename (filename)
 243   "Convert a standard file's name to something suitable for the current OS.
 244 This function's standard definition is trivial; it just returns the argument.
 245 However, on some systems, the function is redefined
 246 with a definition that really does change some file names."
 247   (let ((name (copy-sequence filename))
 248         (start 0))
 249     ;; leave ':' if part of drive specifier
 250     (if (eq (aref name 1) ?:)
 251         (setq start 2))
 252     ;; destructively replace invalid filename characters with !
 253     (while (string-match "[?*:<>|\"\000-\037]" name start)
 254       (aset name (match-beginning 0) ?!)
 255       (setq start (match-end 0)))
 256     ;; convert directory separators to Windows format
 257     ;; (but only if the shell in use requires it)
 258     (if (w32-shell-dos-semantics)
 259         (while (string-match "/" name start)
 260           (aset name (match-beginning 0) ?\\)
 261           (setq start (match-end 0))))
 262       name))
 263
 264 ;;; Fix interface to (X-specific) mouse.el
 265 (defun x-set-selection (type data)
 266   (or type (setq type 'PRIMARY))
 267   (put 'x-selections type data))
 268
 269 (defun x-get-selection (&optional type data-type)
 270   (or type (setq type 'PRIMARY))
 271   (get 'x-selections type))
 272
 273 (defun set-w32-system-coding-system (coding-system)
 274   "Set the coding system used by the Windows System to CODING-SYSTEM.
 275 This is used for things like passing font names with non-ASCII
 276 characters in them to the system. For a list of possible values of
 277 CODING-SYSTEM, use \\[list-coding-systems]."
 278   (interactive
 279    (list (let ((default w32-system-coding-system))
 280            (read-coding-system
 281             (format "Coding system for system calls (default, %s): "
 282                     default)
 283             default))))
 284   (check-coding-system coding-system)
 285   (setq w32-system-coding-system coding-system))
 286 ;; Set system coding system initially to iso-latin-1
 287 (set-w32-system-coding-system 'iso-latin-1)
 288
 289 ;;; Set to a system sound if you want a fancy bell.
 290 (set-message-beep nil)
 291
 292 ;;; The "Windows" keys on newer keyboards bring up the Start menu
 293 ;;; whether you want it or not - make Emacs ignore these keystrokes
 294 ;;; rather than beep.
 295 (global-set-key [lwindow] 'ignore)
 296 (global-set-key [rwindow] 'ignore)
 297
 298 ;; Map certain keypad keys into ASCII characters
 299 ;; that people usually expect.
 300 (define-key function-key-map [tab] [?\t])
 301 (define-key function-key-map [linefeed] [?\n])
 302 (define-key function-key-map [clear] [11])
 303 (define-key function-key-map [return] [13])
 304 (define-key function-key-map [escape] [?\e])
 305 (define-key function-key-map [M-tab] [?\M-\t])
 306 (define-key function-key-map [M-linefeed] [?\M-\n])
 307 (define-key function-key-map [M-clear] [?\M-\013])
 308 (define-key function-key-map [M-return] [?\M-\015])
 309 (define-key function-key-map [M-escape] [?\M-\e])
 310
 311 ;; These don't do the right thing (voelker)
 312 ;(define-key function-key-map [backspace] [127])
 313 ;(define-key function-key-map [delete] [127])
 314 ;(define-key function-key-map [M-backspace] [?\M-\d])
 315 ;(define-key function-key-map [M-delete] [?\M-\d])
 316
 317 ;; These tell read-char how to convert
 318 ;; these special chars to ASCII.
 319 (put 'tab 'ascii-character ?\t)
 320 (put 'linefeed 'ascii-character ?\n)
 321 (put 'clear 'ascii-character 12)
 322 (put 'return 'ascii-character 13)
 323 (put 'escape 'ascii-character ?\e)
 324 (put 'backspace 'ascii-character 127)
 325 (put 'delete 'ascii-character 127)
 326
 327 ;;; w32-fns.el ends here