lisp/w32-fns.el

   1 ;;; w32-fns.el --- Lisp routines for Windows NT
   2
   3 ;; Copyright (C) 1994, 2001-2011  Free Software Foundation, Inc.
   4
   5 ;; Author: Geoff Voelker <voelker@cs.washington.edu>
   6 ;; Keywords: internal
   7 ;; Package: emacs
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26
  27 ;;; Code:
  28 (require 'w32-vars)
  29
  30 (defvar explicit-shell-file-name)
  31
  32 ;;;; Function keys
  33
  34 (declare-function set-message-beep "w32console.c")
  35 (declare-function w32-get-clipboard-data "w32select.c")
  36 (declare-function w32-get-locale-info "w32proc.c")
  37 (declare-function w32-get-valid-locale-ids "w32proc.c")
  38 (declare-function w32-set-clipboard-data "w32select.c")
  39
  40 ;; Map all versions of a filename (8.3, longname, mixed case) to the
  41 ;; same buffer.
  42 (setq find-file-visit-truename t)
  43
  44 (declare-function x-server-version "w32fns.c" (&optional display))
  45
  46 (defun w32-version ()
  47   "Return the MS-Windows version numbers.
  48 The value is a list of three integers: the major and minor version
  49 numbers, and the build number."
  50   (x-server-version))
  51
  52 (defun w32-using-nt ()
  53   "Return non-nil if running on a Windows NT descendant.
  54 That includes all Windows systems except for 9X/Me."
  55   (and (eq system-type 'windows-nt) (getenv "SystemRoot")))
  56
  57 (defun w32-shell-name ()
  58   "Return the name of the shell being used."
  59   (or (bound-and-true-p shell-file-name)
  60       (getenv "ESHELL")
  61       (getenv "SHELL")
  62       (and (w32-using-nt) "cmd.exe")
  63       "command.com"))
  64
  65 (defun w32-system-shell-p (shell-name)
  66   (and shell-name
  67        (member (downcase (file-name-nondirectory shell-name))
  68                w32-system-shells)))
  69
  70 (defun w32-shell-dos-semantics ()
  71   "Return non-nil if the interactive shell being used expects MS-DOS shell semantics."
  72   (or (w32-system-shell-p (w32-shell-name))
  73       (and (member (downcase (file-name-nondirectory (w32-shell-name)))
  74                    '("cmdproxy" "cmdproxy.exe"))
  75            (w32-system-shell-p (getenv "COMSPEC")))))
  76
  77 (defvar w32-quote-process-args)  ;; defined in w32proc.c
  78
  79 (defun w32-check-shell-configuration ()
  80   "Check the configuration of shell variables on Windows.
  81 This function is invoked after loading the init files and processing
  82 the command line arguments.  It issues a warning if the user or site
  83 has configured the shell with inappropriate settings."
  84   (interactive)
  85   (let ((prev-buffer (current-buffer))
  86         (buffer (get-buffer-create "*Shell Configuration*"))
  87         (system-shell))
  88     (set-buffer buffer)
  89     (erase-buffer)
  90     (if (w32-system-shell-p (getenv "ESHELL"))
  91         (insert (format "Warning! The ESHELL environment variable uses %s.
  92 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
  93                         (getenv "ESHELL"))))
  94     (if (w32-system-shell-p (getenv "SHELL"))
  95         (insert (format "Warning! The SHELL environment variable uses %s.
  96 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
  97                         (getenv "SHELL"))))
  98     (if (w32-system-shell-p shell-file-name)
  99         (insert (format "Warning! shell-file-name uses %s.
 100 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 101                         shell-file-name)))
 102     (if (and (boundp 'explicit-shell-file-name)
 103              (w32-system-shell-p explicit-shell-file-name))
 104         (insert (format "Warning! explicit-shell-file-name uses %s.
 105 You probably want to change it so that it uses cmdproxy.exe instead.\n\n"
 106                         explicit-shell-file-name)))
 107     (setq system-shell (> (buffer-size) 0))
 108
 109     ;; Allow user to specify that they really do want to use one of the
 110     ;; "system" shells, despite the drawbacks, but still warn if
 111     ;; shell-command-switch doesn't match.
 112     (if w32-allow-system-shell
 113         (erase-buffer))
 114
 115     (cond (system-shell
 116            ;; System shells.
 117            (if (string-equal "-c" shell-command-switch)
 118                (insert "Warning! shell-command-switch is \"-c\".
 119 You should set this to \"/c\" when using a system shell.\n\n"))
 120            (if w32-quote-process-args
 121                (insert "Warning! w32-quote-process-args is t.
 122 You should set this to nil when using a system shell.\n\n")))
 123           ;; Non-system shells.
 124           (t
 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 non-system shell.\n\n"))
 128            (if (not w32-quote-process-args)
 129                (insert "Warning! w32-quote-process-args is nil.
 130 You should set this to t when using a non-system shell.\n\n"))))
 131     (if (> (buffer-size) 0)
 132         (display-buffer buffer)
 133       (kill-buffer buffer))
 134     (set-buffer prev-buffer)))
 135
 136 (add-hook 'after-init-hook 'w32-check-shell-configuration)
 137
 138 ;; Override setting chosen at startup.
 139 (defun set-default-process-coding-system ()
 140   ;; Most programs on Windows will accept Unix line endings on input
 141   ;; (and some programs ported from Unix require it) but most will
 142   ;; produce DOS line endings on output.
 143   (setq default-process-coding-system
 144         (if (default-value 'enable-multibyte-characters)
 145             '(undecided-dos . undecided-unix)
 146           '(raw-text-dos . raw-text-unix)))
 147   ;; Make cmdproxy default to using DOS line endings for input,
 148   ;; because some Windows programs (including command.com) require it.
 149   (add-to-list 'process-coding-system-alist
 150                `("[cC][mM][dD][pP][rR][oO][xX][yY]"
 151                  . ,(if (default-value 'enable-multibyte-characters)
 152                         '(undecided-dos . undecided-dos)
 153                       '(raw-text-dos . raw-text-dos))))
 154   ;; plink needs DOS input when entering the password.
 155   (add-to-list 'process-coding-system-alist
 156                `("[pP][lL][iI][nN][kK]"
 157                  . ,(if (default-value 'enable-multibyte-characters)
 158                         '(undecided-dos . undecided-dos)
 159                       '(raw-text-dos . raw-text-dos)))))
 160
 161 (add-hook 'before-init-hook 'set-default-process-coding-system)
 162
 163
 164 ;;; Basic support functions for managing Emacs' locale setting
 165
 166 (defvar w32-valid-locales nil
 167   "List of locale ids known to be supported.")
 168
 169 ;; This is the brute-force version; an efficient version is now
 170 ;; built-in though.
 171 (if (not (fboundp 'w32-get-valid-locale-ids))
 172     (defun w32-get-valid-locale-ids ()
 173       "Return list of all valid Windows locale ids."
 174       (let ((i 65535)
 175             locales)
 176         (while (> i 0)
 177           (if (w32-get-locale-info i)
 178               (setq locales (cons i locales)))
 179           (setq i (1- i)))
 180         locales)))
 181
 182 (defun w32-list-locales ()
 183   "List the name and id of all locales supported by Windows."
 184   (interactive)
 185   (when (null w32-valid-locales)
 186     (setq w32-valid-locales (sort (w32-get-valid-locale-ids) #'<)))
 187   (with-output-to-temp-buffer "*Supported Locales*"
 188     (princ "LCID\tAbbrev\tFull name\n\n")
 189     (dolist (locale w32-valid-locales)
 190       (princ (format "%d\t%s\t%s\n"
 191                      locale
 192                      (w32-get-locale-info locale)
 193                      (w32-get-locale-info locale t))))))
 194
 195 ;; Setup Info-default-directory-list to include the info directory
 196 ;; near where Emacs executable was installed.  We used to set INFOPATH,
 197 ;; but when this is set Info-default-directory-list is ignored.  We
 198 ;; also cannot rely upon what is set in paths.el because they assume
 199 ;; that configuration during build time is correct for runtime.
 200 (defun w32-init-info ()
 201   (let* ((instdir (file-name-directory invocation-directory))
 202          (dir1 (expand-file-name "../info/" instdir))
 203          (dir2 (expand-file-name "../../../info/" instdir)))
 204     (if (file-exists-p dir1)
 205         (setq Info-default-directory-list
 206               (append Info-default-directory-list (list dir1)))
 207       (if (file-exists-p dir2)
 208           (setq Info-default-directory-list
 209                 (append Info-default-directory-list (list dir2)))))))
 210
 211 (add-hook 'before-init-hook 'w32-init-info)
 212
 213 ;; The variable source-directory is used to initialize Info-directory-list.
 214 ;; However, the common case is that Emacs is being used from a binary
 215 ;; distribution, and the value of source-directory is meaningless in that
 216 ;; case.  Even worse, source-directory can refer to a directory on a drive
 217 ;; on the build machine that happens to be a removable drive on the user's
 218 ;; machine.  When this happens, Emacs tries to access the removable drive
 219 ;; and produces the abort/retry/ignore dialog.  Since we do not use
 220 ;; source-directory, set it to something that is a reasonable approximation
 221 ;; on the user's machine.
 222
 223 ;;(add-hook 'before-init-hook
 224 ;;        (lambda ()
 225 ;;          (setq source-directory (file-name-as-directory
 226 ;;                                   (expand-file-name ".." exec-directory)))))
 227
 228 (defun w32-convert-standard-filename (filename)
 229   "Convert a standard file's name to something suitable for MS-Windows.
 230 This means to guarantee valid names and perhaps to canonicalize
 231 certain patterns.
 232
 233 This function is called by `convert-standard-filename'.
 234
 235 Replace invalid characters and turn Cygwin names into native
 236 names, and also turn slashes into backslashes if the shell
 237 requires it (see `w32-shell-dos-semantics')."
 238   (save-match-data
 239     (let ((name
 240            (if (string-match "\\`/cygdrive/\\([a-zA-Z]\\)/" filename)
 241                (replace-match "\\1:/" t nil filename)
 242              (copy-sequence filename)))
 243           (start 0))
 244       ;; leave ':' if part of drive specifier
 245       (if (and (> (length name) 1)
 246                (eq (aref name 1) ?:))
 247           (setq start 2))
 248       ;; destructively replace invalid filename characters with !
 249       (while (string-match "[?*:<>|\"\000-\037]" name start)
 250         (aset name (match-beginning 0) ?!)
 251         (setq start (match-end 0)))
 252       ;; convert directory separators to Windows format
 253       ;; (but only if the shell in use requires it)
 254       (when (w32-shell-dos-semantics)
 255         (setq start 0)
 256         (while (string-match "/" name start)
 257           (aset name (match-beginning 0) ?\\)
 258           (setq start (match-end 0))))
 259       name)))
 260
 261 ;;; Fix interface to (X-specific) mouse.el
 262 (defun x-set-selection (type data)
 263   "Make an X selection of type TYPE and value DATA.
 264 The argument TYPE (nil means `PRIMARY') says which selection, and
 265 DATA specifies the contents.  TYPE must be a symbol.  \(It can also
 266 be a string, which stands for the symbol with that name, but this
 267 is considered obsolete.)  DATA may be a string, a symbol, an
 268 integer (or a cons of two integers or list of two integers).
 269
 270 The selection may also be a cons of two markers pointing to the same buffer,
 271 or an overlay.  In these cases, the selection is considered to be the text
 272 between the markers *at whatever time the selection is examined*.
 273 Thus, editing done in the buffer after you specify the selection
 274 can alter the effective value of the selection.
 275
 276 The data may also be a vector of valid non-vector selection values.
 277
 278 The return value is DATA.
 279
 280 Interactively, this command sets the primary selection.  Without
 281 prefix argument, it reads the selection in the minibuffer.  With
 282 prefix argument, it uses the text of the region as the selection value.
 283
 284 Note that on MS-Windows, primary and secondary selections set by Emacs
 285 are not available to other programs."
 286   (put 'x-selections (or type 'PRIMARY) data))
 287
 288 (defun x-get-selection (&optional type data-type)
 289   "Return the value of an X Windows selection.
 290 The argument TYPE (default `PRIMARY') says which selection,
 291 and the argument DATA-TYPE (default `STRING') says
 292 how to convert the data.
 293
 294 TYPE may be any symbol \(but nil stands for `PRIMARY').  However,
 295 only a few symbols are commonly used.  They conventionally have
 296 all upper-case names.  The most often used ones, in addition to
 297 `PRIMARY', are `SECONDARY' and `CLIPBOARD'.
 298
 299 DATA-TYPE is usually `STRING', but can also be one of the symbols
 300 in `selection-converter-alist', which see."
 301   (get 'x-selections (or type 'PRIMARY)))
 302
 303 ;; x-selection-owner-p is used in simple.el
 304 (defun x-selection-owner-p (&optional type)
 305   (and (memq type '(nil PRIMARY SECONDARY))
 306        (get 'x-selections (or type 'PRIMARY))))
 307
 308 (defun set-w32-system-coding-system (coding-system)
 309   "Set the coding system used by the Windows system to CODING-SYSTEM.
 310 This is used for things like passing font names with non-ASCII
 311 characters in them to the system.  For a list of possible values of
 312 CODING-SYSTEM, use \\[list-coding-systems].
 313
 314 This function is provided for backward compatibility, since
 315 `w32-system-coding-system' is now an alias for `locale-coding-system'."
 316   (interactive
 317    (list (let ((default locale-coding-system))
 318            (read-coding-system
 319             (format "Coding system for system calls (default %s): "
 320                     default)
 321             default))))
 322   (check-coding-system coding-system)
 323   (setq locale-coding-system coding-system))
 324
 325 ;; locale-coding-system was introduced to do the same thing as
 326 ;; w32-system-coding-system. Use that instead.
 327 (defvaralias 'w32-system-coding-system 'locale-coding-system)
 328
 329 ;; Set to a system sound if you want a fancy bell.
 330 (set-message-beep nil)
 331
 332 ;; The "Windows" keys on newer keyboards bring up the Start menu
 333 ;; whether you want it or not - make Emacs ignore these keystrokes
 334 ;; rather than beep.
 335 (global-set-key [lwindow] 'ignore)
 336 (global-set-key [rwindow] 'ignore)
 337
 338 (defun w32-add-charset-info (xlfd-charset windows-charset codepage)
 339   "Function to add character sets to display with Windows fonts.
 340 Creates entries in `w32-charset-info-alist'.
 341 XLFD-CHARSET is a string which will appear in the XLFD font name to
 342 identify the character set.  WINDOWS-CHARSET is a symbol identifying
 343 the Windows character set this maps to.  For the list of possible
 344 values, see the documentation for `w32-charset-info-alist'.  CODEPAGE
 345 can be a numeric codepage that Windows uses to display the character
 346 set, t for Unicode output with no codepage translation or nil for 8
 347 bit output with no translation."
 348   (add-to-list 'w32-charset-info-alist
 349                (cons xlfd-charset (cons windows-charset codepage))))
 350
 351 ;; The last charset we add becomes the "preferred" charset for the return
 352 ;; value from w32-select-font etc, so list the most important charsets last.
 353 (w32-add-charset-info "iso8859-14" 'w32-charset-ansi  28604)
 354 (w32-add-charset-info "iso8859-15" 'w32-charset-ansi  28605)
 355 ;; The following two are included for pattern matching.
 356 (w32-add-charset-info "jisx0201" 'w32-charset-shiftjis 932)
 357 (w32-add-charset-info "jisx0208" 'w32-charset-shiftjis 932)
 358 (w32-add-charset-info "jisx0201-latin" 'w32-charset-shiftjis 932)
 359 (w32-add-charset-info "jisx0201-katakana" 'w32-charset-shiftjis 932)
 360 (w32-add-charset-info "ksc5601.1989" 'w32-charset-hangeul 949)
 361 (w32-add-charset-info "big5" 'w32-charset-chinesebig5 950)
 362 (w32-add-charset-info "gb2312.1980" 'w32-charset-gb2312 936)
 363 (w32-add-charset-info "ms-symbol" 'w32-charset-symbol nil)
 364 (w32-add-charset-info "ms-oem" 'w32-charset-oem 437)
 365 (w32-add-charset-info "ms-oemlatin" 'w32-charset-oem 850)
 366 (w32-add-charset-info "iso8859-2" 'w32-charset-easteurope 28592)
 367 (w32-add-charset-info "iso8859-3" 'w32-charset-turkish 28593)
 368 (w32-add-charset-info "iso8859-4" 'w32-charset-baltic 28594)
 369 (w32-add-charset-info "iso8859-6" 'w32-charset-arabic 28596)
 370 (w32-add-charset-info "iso8859-7" 'w32-charset-greek 28597)
 371 (w32-add-charset-info "iso8859-8" 'w32-charset-hebrew 1255)
 372 (w32-add-charset-info "iso8859-9" 'w32-charset-turkish 1254)
 373 (w32-add-charset-info "iso8859-13" 'w32-charset-baltic 1257)
 374 (w32-add-charset-info "koi8-r" 'w32-charset-russian 20866)
 375 (w32-add-charset-info "iso8859-5" 'w32-charset-russian 28595)
 376 (w32-add-charset-info "tis620-2533" 'w32-charset-thai 874)
 377 (w32-add-charset-info "windows-1258" 'w32-charset-vietnamese 1258)
 378 (w32-add-charset-info "ksc5601.1992" 'w32-charset-johab 1361)
 379 (w32-add-charset-info "mac-roman" 'w32-charset-mac 10000)
 380 (w32-add-charset-info "iso10646-1" 'w32-charset-default t)
 381
 382 ;;   ;; If unicode windows charset is not defined, use ansi fonts.
 383 ;;   (w32-add-charset-info "iso10646-1" 'w32-charset-ansi t))
 384
 385 ;; Prefered names
 386 (w32-add-charset-info "big5-0" 'w32-charset-chinesebig5 950)
 387 (w32-add-charset-info "gb2312.1980-0" 'w32-charset-gb2312 936)
 388 (w32-add-charset-info "jisx0208-sjis" 'w32-charset-shiftjis 932)
 389 (w32-add-charset-info "ksc5601.1987-0" 'w32-charset-hangeul 949)
 390 (w32-add-charset-info "tis620-0" 'w32-charset-thai 874)
 391 (w32-add-charset-info "iso8859-1" 'w32-charset-ansi 1252)
 392
 393 (make-obsolete-variable 'w32-enable-italics
 394                         'w32-enable-synthesized-fonts "21.1")
 395 (make-obsolete-variable 'w32-charset-to-codepage-alist
 396                         'w32-charset-info-alist "21.1")
 397
 398 \f
 399 ;;;; Selections
 400
 401 ;; We keep track of the last text selected here, so we can check the
 402 ;; current selection against it, and avoid passing back our own text
 403 ;; from x-selection-value.
 404 (defvar x-last-selected-text nil)
 405
 406 (defun x-get-selection-value ()
 407   "Return the value of the current selection.
 408 Consult the selection.  Treat empty strings as if they were unset."
 409   (if x-select-enable-clipboard
 410       (let (text)
 411         ;; Don't die if x-get-selection signals an error.
 412         (condition-case c
 413             (setq text (w32-get-clipboard-data))
 414           (error (message "w32-get-clipboard-data:%s" c)))
 415         (if (string= text "") (setq text nil))
 416         (cond
 417          ((not text) nil)
 418          ((eq text x-last-selected-text) nil)
 419          ((string= text x-last-selected-text)
 420           ;; Record the newer string, so subsequent calls can use the 'eq' test.
 421           (setq x-last-selected-text text)
 422           nil)
 423          (t
 424           (setq x-last-selected-text text))))))
 425 \f
 426 (defalias 'x-selection-value 'x-get-selection-value)
 427
 428 ;; Arrange for the kill and yank functions to set and check the clipboard.
 429 (setq interprogram-cut-function 'x-select-text)
 430 (setq interprogram-paste-function 'x-get-selection-value)
 431
 432 \f
 433 ;;;; Support for build process
 434 (defun w32-batch-update-autoloads ()
 435   "Like `batch-update-autoloads', but takes the name of the autoloads file
 436 from the command line.
 437
 438 This is required because some Windows build environments, such as MSYS,
 439 munge command-line arguments that include file names to a horrible mess
 440 that Emacs is unable to cope with."
 441   (let ((generated-autoload-file
 442          (expand-file-name (pop command-line-args-left)))
 443         ;; I can only assume the same considerations may apply here...
 444         (autoload-make-program (pop command-line-args-left)))
 445     (batch-update-autoloads)))
 446
 447 (defun w32-append-code-lines (orig extra)
 448   "Append non-empty non-comment lines in the file EXTRA to the file ORIG.
 449
 450 This function saves all buffers and kills the Emacs session, without asking
 451 for any permissions.
 452
 453 This is required because the Windows build environment is not required
 454 to include Sed, which is used by leim/Makefile.in to do the job."
 455   (find-file orig)
 456   (goto-char (point-max))
 457   (insert-file-contents extra)
 458   (delete-matching-lines "^$\\|^;")
 459   (save-buffers-kill-emacs t))
 460
 461 ;;; w32-fns.el ends here