Mercurial > hg > xemacs-beta
comparison lisp/packages/terminal.el @ 0:376386a54a3c r19-14
Import from CVS: tag r19-14
| author | cvs |
|---|---|
| date | Mon, 13 Aug 2007 08:45:50 +0200 |
| parents | |
| children | 0293115a14e9 |
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| -1:000000000000 | 0:376386a54a3c |
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| 1 ;;; terminal.el --- terminal emulator for GNU Emacs. | |
| 2 ;; Keywords: comm, terminals | |
| 3 | |
| 4 ;; Copyright (C) 1986, 1987, 1988, 1989, 1993 Free Software Foundation, Inc. | |
| 5 ;; Written by Richard Mlynarik, November 1986. | |
| 6 ;; Face and attribute support added by Richard Mlynarik, April 1996. | |
| 7 | |
| 8 ;; This file is part of XEmacs. | |
| 9 | |
| 10 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 11 ;; under the terms of the GNU General Public License as published by | |
| 12 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 13 ;; any later version. | |
| 14 | |
| 15 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 ;; General Public License for more details. | |
| 19 | |
| 20 ;; You should have received a copy of the GNU General Public License | |
| 21 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 22 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 23 | |
| 24 ;;; Synched up with: Not synched with FSF. | |
| 25 | |
| 26 ;;#### TODO | |
| 27 ;;#### terminfo? | |
| 28 | |
| 29 ;;#### One probably wants to do setenv MORE -c when running with | |
| 30 ;;#### more-processing enabled. | |
| 31 | |
| 32 (provide 'terminal) | |
| 33 (require 'ehelp) | |
| 34 | |
| 35 (defvar terminal-escape-char ?\C-^ | |
| 36 "*All characters except for this are passed verbatim through the | |
| 37 terminal-emulator. This character acts as a prefix for commands | |
| 38 to the emulator program itself. Type this character twice to send | |
| 39 it through the emulator. Type ? after typing it for a list of | |
| 40 possible commands. | |
| 41 This variable is local to each terminal-emulator buffer.") | |
| 42 | |
| 43 (defvar terminal-scrolling t | |
| 44 "*If non-nil, the terminal-emulator will `scroll' when output occurs | |
| 45 past the bottom of the screen. If nil, output will `wrap' to the top | |
| 46 of the screen. | |
| 47 This variable is local to each terminal-emulator buffer.") | |
| 48 | |
| 49 (defvar terminal-more-processing t | |
| 50 "*If non-nil, do more-processing. | |
| 51 This variable is local to each terminal-emulator buffer.") | |
| 52 | |
| 53 ;; If you are the sort of loser who uses scrolling without more breaks | |
| 54 ;; and expects to actually see anything, you should probably set this to | |
| 55 ;; around 400 | |
| 56 (defvar terminal-redisplay-interval 5000 | |
| 57 "*Maximum number of characters which will be processed by the | |
| 58 terminal-emulator before a screen redisplay is forced. | |
| 59 Set this to a large value for greater throughput, | |
| 60 set it smaller for more frequent updates but overall slower | |
| 61 performance.") | |
| 62 | |
| 63 (defvar terminal-more-break-insertion | |
| 64 "*** More break -- Press space to continue ***") | |
| 65 | |
| 66 (defvar terminal-escape-map nil) | |
| 67 (defvar terminal-map nil) | |
| 68 (defvar terminal-more-break-map nil) | |
| 69 (if terminal-map | |
| 70 nil | |
| 71 (let ((map (make-keymap))) | |
| 72 (set-keymap-name map 'terminal-map) | |
| 73 | |
| 74 (let ((meta-prefix-char -1) | |
| 75 (s (make-string 1 0)) | |
| 76 (i 0)) | |
| 77 (while (< i 256) | |
| 78 (aset s 0 i) | |
| 79 (define-key map s 'te-pass-through) | |
| 80 (setq i (1+ i)))) | |
| 81 | |
| 82 ;(define-key map "\C-l" | |
| 83 ; '(lambda () (interactive) (te-pass-through) (redraw-display))) | |
| 84 (setq terminal-map map))) | |
| 85 | |
| 86 (if terminal-escape-map | |
| 87 nil | |
| 88 (let ((map (make-keymap))) | |
| 89 (set-keymap-name map 'terminal-escape-map) | |
| 90 (let ((s (make-string 1 ?0))) | |
| 91 (while (<= (aref s 0) ?9) | |
| 92 (define-key map s 'digit-argument) | |
| 93 (aset s 0 (1+ (aref s 0))))) | |
| 94 (define-key map "b" 'switch-to-buffer) | |
| 95 (define-key map "o" 'other-window) | |
| 96 (define-key map "e" 'te-set-escape-char) | |
| 97 (define-key map "\C-l" 'redraw-display) | |
| 98 (define-key map "\C-o" 'te-flush-pending-output) | |
| 99 (define-key map "m" 'te-toggle-more-processing) | |
| 100 (define-key map "x" 'te-escape-extended-command) | |
| 101 (define-key map "?" 'te-escape-help) | |
| 102 (define-key map (char-to-string help-char) 'te-escape-help) | |
| 103 (setq terminal-escape-map map))) | |
| 104 | |
| 105 (defvar te-escape-command-alist '()) | |
| 106 (if te-escape-command-alist | |
| 107 nil | |
| 108 (setq te-escape-command-alist | |
| 109 '(("Set Escape Character" . te-set-escape-char) | |
| 110 ("Refresh" . redraw-display) | |
| 111 ("Record Output" . te-set-output-log) | |
| 112 ("Photo" . te-set-output-log) | |
| 113 ("Tofu" . te-tofu) ;; confuse the uninitiated | |
| 114 ("Stuff Input" . te-stuff-string) | |
| 115 ("Flush Pending Output" . te-flush-pending-output) | |
| 116 ("Enable More Processing" . te-enable-more-processing) | |
| 117 ("Disable More Processing" . te-disable-more-processing) | |
| 118 ("Scroll at end of page" . te-do-scrolling) | |
| 119 ("Wrap at end of page" . te-do-wrapping) | |
| 120 ("Switch To Buffer" . switch-to-buffer) | |
| 121 ("Other Window" . other-window) | |
| 122 ("Kill Buffer" . kill-buffer) | |
| 123 ("Help" . te-escape-help) | |
| 124 ("Set Redisplay Interval" . te-set-redisplay-interval) | |
| 125 ))) | |
| 126 | |
| 127 ;(setq terminal-more-break-map nil) | |
| 128 (if terminal-more-break-map | |
| 129 nil | |
| 130 (let ((map (make-keymap))) | |
| 131 (set-keymap-name map 'terminal-more-break-map) | |
| 132 | |
| 133 (let ((meta-prefix-char -1) | |
| 134 (s (make-string 1 0)) | |
| 135 (i 0)) | |
| 136 (while (< i 256) | |
| 137 (aset s 0 i) | |
| 138 (define-key map s 'te-more-break-unwind) | |
| 139 (setq i (1+ i)))) | |
| 140 | |
| 141 (define-key map (char-to-string help-char) 'te-more-break-help) | |
| 142 (define-key map " " 'te-more-break-resume) | |
| 143 (define-key map "\C-l" 'redraw-display) | |
| 144 (define-key map "\C-o" 'te-more-break-flush-pending-output) | |
| 145 ;;#### this isn't right | |
| 146 ;(define-key map "\^?" 'te-more-break-flush-pending-output) ;DEL | |
| 147 (define-key map "\r" 'te-more-break-advance-one-line) | |
| 148 | |
| 149 (setq terminal-more-break-map map))) | |
| 150 | |
| 151 (defvar te-width) | |
| 152 (defvar te-height) | |
| 153 (defvar te-process) | |
| 154 (defvar te-pending-output) | |
| 155 (defvar te-saved-point) | |
| 156 (defvar te-pending-output-info) | |
| 157 (defvar te-log-buffer) | |
| 158 (defvar te-more-count) | |
| 159 (defvar te-redisplay-count) | |
| 160 (defvar te-current-face) | |
| 161 (defvar te-current-attributes) | |
| 162 | |
| 163 (make-face 'terminal-default) | |
| 164 | |
| 165 (make-face 'terminal-standout) | |
| 166 (if (not (face-differs-from-default-p 'terminal-standout)) | |
| 167 (copy-face 'bold 'terminal-standout)) | |
| 168 | |
| 169 (make-face 'terminal-underline) | |
| 170 (cond ((face-differs-from-default-p 'terminal-underline)) | |
| 171 ((find-face 'underline) | |
| 172 (copy-face 'underline 'terminal-underline)) | |
| 173 (t | |
| 174 (set-face-underline-p 'terminal-underline t))) | |
| 175 | |
| 176 (make-face 'terminal-standout-underline) | |
| 177 (cond ((face-differs-from-default-p 'terminal-standout-underline)) | |
| 178 (t | |
| 179 (copy-face 'terminal-standout 'terminal-standout-underline) | |
| 180 (set-face-underline-p 'terminal-standout-underline t))) | |
| 181 | |
| 182 (defun te-insert-blank (count) | |
| 183 (let ((p (point))) | |
| 184 (insert-char ?\ count) | |
| 185 (put-text-property p (point) 'face 'terminal-default))) | |
| 186 | |
| 187 | |
| 188 ;;;; escape map | |
| 189 | |
| 190 (defun te-escape-p (event) | |
| 191 (cond ((eventp terminal-escape-char) | |
| 192 (cond ((key-press-event-p event) | |
| 193 (and (key-press-event-p terminal-escape-char) | |
| 194 (= (event-modifier-bits event) | |
| 195 (event-modifier-bits terminal-escape-char)) | |
| 196 (eq (event-key event) | |
| 197 (event-key terminal-escape-char)))) | |
| 198 ((button-press-event-p event) | |
| 199 (and (button-press-event-p terminal-escape-char) | |
| 200 (= (event-modifier-bits event) | |
| 201 (event-modifier-bits terminal-escape-char)) | |
| 202 (eq (event-button event) | |
| 203 (event-button terminal-escape-char)))) | |
| 204 (t nil))) | |
| 205 ((numberp terminal-escape-char) | |
| 206 (let ((c (event-to-character event nil t nil))) | |
| 207 (and c (= c terminal-escape-char)))) | |
| 208 (t | |
| 209 nil))) | |
| 210 | |
| 211 | |
| 212 (defun te-escape () | |
| 213 (interactive) | |
| 214 (let ((c (let ((cursor-in-echo-area t) | |
| 215 (prompt (if prefix-arg | |
| 216 (format "Emacs Terminal escape> %d " | |
| 217 (prefix-numeric-value prefix-arg)) | |
| 218 "Emacs Terminal escape> "))) | |
| 219 (message "%s" prompt) | |
| 220 (let ((e (next-command-event))) | |
| 221 (while (button-release-event-p e) | |
| 222 (setq e (next-command-event e))) | |
| 223 (if (te-escape-p e) | |
| 224 e | |
| 225 (progn | |
| 226 (setq unread-command-event e) | |
| 227 (lookup-key terminal-escape-map | |
| 228 (read-key-sequence prompt)))))))) | |
| 229 (cond ((eventp c) | |
| 230 (message nil) | |
| 231 (copy-event c last-command-event) | |
| 232 (let ((terminal-escape-char -259)) | |
| 233 (te-pass-through))) | |
| 234 (c | |
| 235 (call-interactively c))))) | |
| 236 | |
| 237 (defun te-escape-help () | |
| 238 "Provide help on commands available after terminal-escape-char is typed." | |
| 239 (interactive) | |
| 240 (message "Terminal emulator escape help...") | |
| 241 (let ((char (single-key-description terminal-escape-char))) | |
| 242 (with-electric-help | |
| 243 (function (lambda () | |
| 244 (princ (format "Terminal-emulator escape, invoked by \"%s\" | |
| 245 Type \"%s\" twice to send a single \"%s\" through. | |
| 246 | |
| 247 Other chars following \"%s\" are interpreted as follows:\n" | |
| 248 char char char char)) | |
| 249 | |
| 250 (princ (substitute-command-keys "\\{terminal-escape-map}\n")) | |
| 251 (princ (format "\nSubcommands of \"%s\" (%s)\n" | |
| 252 (where-is-internal 'te-escape-extended-command | |
| 253 terminal-escape-map t) | |
| 254 'te-escape-extended-command)) | |
| 255 (let ((l (if (fboundp 'sortcar) | |
| 256 (sortcar (copy-sequence te-escape-command-alist) | |
| 257 'string<) | |
| 258 (sort (copy-sequence te-escape-command-alist) | |
| 259 (function (lambda (a b) | |
| 260 (string< (car a) (car b)))))))) | |
| 261 (while l | |
| 262 (let ((doc (or (documentation (cdr (car l))) | |
| 263 "Not documented"))) | |
| 264 (if (string-match "\n" doc) | |
| 265 ;; just use first line of documentation | |
| 266 (setq doc (substring doc 0 (match-beginning 0)))) | |
| 267 (princ " \"") | |
| 268 (princ (car (car l))) | |
| 269 (princ "\":\n ") | |
| 270 (princ doc) | |
| 271 (write-char ?\n)) | |
| 272 (setq l (cdr l)))) | |
| 273 nil))))) | |
| 274 | |
| 275 | |
| 276 | |
| 277 (defun te-escape-extended-command () | |
| 278 (interactive) | |
| 279 (let ((c (let ((completion-ignore-case t)) | |
| 280 (completing-read "terminal command: " | |
| 281 te-escape-command-alist | |
| 282 nil t)))) | |
| 283 (if c | |
| 284 (catch 'foo | |
| 285 (setq c (downcase c)) | |
| 286 (let ((l te-escape-command-alist)) | |
| 287 (while l | |
| 288 (if (string= c (downcase (car (car l)))) | |
| 289 (throw 'foo (call-interactively (cdr (car l)))) | |
| 290 (setq l (cdr l))))))))) | |
| 291 | |
| 292 ;; not used. | |
| 293 (defun te-escape-extended-command-unread () | |
| 294 (interactive) | |
| 295 (setq unread-command-event last-command-event) | |
| 296 (te-escape-extended-command)) | |
| 297 | |
| 298 (defun te-set-escape-char (c) | |
| 299 "Change the terminal-emulator escape character." | |
| 300 (interactive (list (let ((cursor-in-echo-area t)) | |
| 301 (message "Set escape character to: ") | |
| 302 (let ((e (next-command-event))) | |
| 303 (while (button-release-event-p e) | |
| 304 (setq e (next-command-event e))) | |
| 305 e)))) | |
| 306 (cond ((te-escape-p c) | |
| 307 (message "\"%s\" is escape char")) | |
| 308 ((and (eventp terminal-escape-char) | |
| 309 (event-to-character terminal-escape-char nil t nil)) | |
| 310 (message "\"%s\" is now escape; \"%s\" passes though" | |
| 311 (single-key-description c) | |
| 312 (single-key-description terminal-escape-char))) | |
| 313 (t | |
| 314 (message "\"%s\" is now escape" | |
| 315 (single-key-description c)) | |
| 316 ;; Let mouse-events, for example, go back to looking at global map | |
| 317 (local-unset-key (vector terminal-escape-char)))) | |
| 318 (local-set-key (vector c) 'te-escape) ;ensure it's defined | |
| 319 (setq terminal-escape-char c)) | |
| 320 | |
| 321 | |
| 322 (defun te-stuff-string (string) | |
| 323 "Read a string to send to through the terminal emulator | |
| 324 as though that string had been typed on the keyboard. | |
| 325 | |
| 326 Very poor man's file transfer protocol." | |
| 327 (interactive "sStuff string: ") | |
| 328 (process-send-string te-process string)) | |
| 329 | |
| 330 (defun te-set-output-log (name) | |
| 331 "Record output from the terminal emulator in a buffer." | |
| 332 (interactive (list (if te-log-buffer | |
| 333 nil | |
| 334 (read-buffer "Record output in buffer: " | |
| 335 (format "%s output-log" | |
| 336 (buffer-name (current-buffer))) | |
| 337 nil)))) | |
| 338 (if (or (null name) (equal name "")) | |
| 339 (progn (setq te-log-buffer nil) | |
| 340 (message "Output logging off.")) | |
| 341 (if (get-buffer name) | |
| 342 nil | |
| 343 (save-excursion | |
| 344 (set-buffer (get-buffer-create name)) | |
| 345 (fundamental-mode) | |
| 346 (buffer-disable-undo (current-buffer)) | |
| 347 (erase-buffer))) | |
| 348 (setq te-log-buffer (get-buffer name)) | |
| 349 (message "Recording terminal emulator output into buffer \"%s\"" | |
| 350 (buffer-name te-log-buffer)))) | |
| 351 | |
| 352 (defun te-tofu () | |
| 353 "Discontinue output log." | |
| 354 (interactive) | |
| 355 (te-set-output-log nil)) | |
| 356 | |
| 357 | |
| 358 (defun te-toggle (sym arg) | |
| 359 (set sym (cond ((not (numberp arg)) arg) | |
| 360 ((= arg 1) (not (symbol-value sym))) | |
| 361 ((< arg 0) nil) | |
| 362 (t t)))) | |
| 363 | |
| 364 (defun te-toggle-more-processing (arg) | |
| 365 (interactive "p") | |
| 366 (message (if (te-toggle 'terminal-more-processing arg) | |
| 367 "More processing on" "More processing off")) | |
| 368 (if terminal-more-processing (setq te-more-count -1))) | |
| 369 | |
| 370 (defun te-toggle-scrolling (arg) | |
| 371 (interactive "p") | |
| 372 (message (if (te-toggle 'terminal-scrolling arg) | |
| 373 "Scroll at end of page" "Wrap at end of page"))) | |
| 374 | |
| 375 (defun te-enable-more-processing () | |
| 376 "Enable ** MORE ** processing" | |
| 377 (interactive) | |
| 378 (te-toggle-more-processing t)) | |
| 379 | |
| 380 (defun te-disable-more-processing () | |
| 381 "Disable ** MORE ** processing" | |
| 382 (interactive) | |
| 383 (te-toggle-more-processing nil)) | |
| 384 | |
| 385 (defun te-do-scrolling () | |
| 386 "Scroll at end of page (yuck)" | |
| 387 (interactive) | |
| 388 (te-toggle-scrolling t)) | |
| 389 | |
| 390 (defun te-do-wrapping () | |
| 391 "Wrap to top of window at end of page" | |
| 392 (interactive) | |
| 393 (te-toggle-scrolling nil)) | |
| 394 | |
| 395 | |
| 396 (defun te-set-redisplay-interval (arg) | |
| 397 "Set the maximum interval (in output characters) between screen updates. | |
| 398 Set this number to large value for greater throughput, | |
| 399 set it smaller for more frequent updates (but overall slower performance." | |
| 400 (interactive "NMax number of output chars between redisplay updates: ") | |
| 401 (setq arg (max arg 1)) | |
| 402 (setq terminal-redisplay-interval arg | |
| 403 te-redisplay-count 0)) | |
| 404 | |
| 405 ;;;; more map | |
| 406 | |
| 407 ;; every command -must- call te-more-break-unwind | |
| 408 ;; or grave lossage will result | |
| 409 | |
| 410 (put 'te-more-break-unread 'suppress-keymap t) | |
| 411 (defun te-more-break-unread () | |
| 412 (interactive) | |
| 413 (if (te-escape-p last-command-event) | |
| 414 (call-interactively 'te-escape) | |
| 415 (message "Continuing from more break (\"%s\" typed, %d chars output pending...)" | |
| 416 (single-key-description last-command-event) | |
| 417 (te-pending-output-length)) | |
| 418 (setq te-more-count 259259) | |
| 419 (te-more-break-unwind) | |
| 420 (let ((terminal-more-processing nil)) | |
| 421 (te-pass-through)))) | |
| 422 | |
| 423 (defun te-more-break-resume () | |
| 424 "Proceed past the **MORE** break, | |
| 425 allowing the next page of output to appear" | |
| 426 (interactive) | |
| 427 (message "Continuing from more break") | |
| 428 (te-more-break-unwind)) | |
| 429 | |
| 430 (defun te-more-break-help () | |
| 431 "Provide help on commands available in a terminal-emulator **MORE** break" | |
| 432 (interactive) | |
| 433 (message "Terminal-emulator more break help...") | |
| 434 (sit-for 0) | |
| 435 (with-electric-help | |
| 436 (function (lambda () | |
| 437 (princ "Terminal-emulator more break.\n\n") | |
| 438 (princ (format "Type \"%s\" (te-more-break-resume)\n%s\n" | |
| 439 (where-is-internal 'te-more-break-resume | |
| 440 terminal-more-break-map t) | |
| 441 (documentation 'te-more-break-resume))) | |
| 442 (princ (substitute-command-keys "\\{terminal-more-break-map}\n")) | |
| 443 (princ "Any other key is passed through to the program | |
| 444 running under the terminal emulator and disables more processing until | |
| 445 all pending output has been dealt with.") | |
| 446 nil)))) | |
| 447 | |
| 448 | |
| 449 (defun te-more-break-advance-one-line () | |
| 450 "Allow one more line of text to be output before doing another more break." | |
| 451 (interactive) | |
| 452 (setq te-more-count 1) | |
| 453 (te-more-break-unwind)) | |
| 454 | |
| 455 (defun te-more-break-flush-pending-output () | |
| 456 "Discard any output which has been received by the terminal emulator but | |
| 457 not yet proceesed and then proceed from the more break." | |
| 458 (interactive) | |
| 459 (te-more-break-unwind) | |
| 460 (te-flush-pending-output)) | |
| 461 | |
| 462 (defun te-flush-pending-output () | |
| 463 "Discard any as-yet-unprocessed output which has been received by | |
| 464 the terminal emulator." | |
| 465 (interactive) | |
| 466 ;; this could conceivably be confusing in the presence of | |
| 467 ;; escape-sequences spanning process-output chunks | |
| 468 (if (null (cdr te-pending-output)) | |
| 469 (message "(There is no output pending)") | |
| 470 (let ((length (te-pending-output-length))) | |
| 471 (message "Flushing %d chars of pending output" length) | |
| 472 (setq te-pending-output | |
| 473 (list 0 (format "\n*** %d chars of pending output flushed ***\n" | |
| 474 length))) | |
| 475 (te-update-pending-output-display) | |
| 476 (te-process-output nil) | |
| 477 (sit-for 0)))) | |
| 478 | |
| 479 | |
| 480 (defun te-pass-through () | |
| 481 "Send the last character typed through the terminal-emulator | |
| 482 without any interpretation" | |
| 483 (interactive) | |
| 484 (if (te-escape-p last-command-event) | |
| 485 (call-interactively 'te-escape) | |
| 486 (and terminal-more-processing | |
| 487 (null (cdr te-pending-output)) | |
| 488 (te-set-more-count nil)) | |
| 489 (let ((c (event-to-character last-command-event nil t nil))) | |
| 490 (if c (process-send-string te-process (make-string 1 c)))) | |
| 491 (te-process-output t))) | |
| 492 | |
| 493 (defun te-set-window-start () | |
| 494 (let* ((w (get-buffer-window (current-buffer))) | |
| 495 (h (if w (window-height w)))) | |
| 496 (cond ((not w)) ; buffer not displayed | |
| 497 ((>= h (/ (- (point) (point-min)) (1+ te-width))) | |
| 498 ;; this is the normal case | |
| 499 (set-window-start w (point-min))) | |
| 500 ;; this happens if some vandal shrinks our window. | |
| 501 ((>= h (/ (- (point-max) (point)) (1+ te-width))) | |
| 502 (set-window-start w (- (point-max) (* h (1+ te-width)) -1))) | |
| 503 ;; I give up. | |
| 504 (t nil)))) | |
| 505 | |
| 506 (defun te-pending-output-length () | |
| 507 (let ((length (car te-pending-output)) | |
| 508 (tem (cdr te-pending-output))) | |
| 509 (while tem | |
| 510 (setq length (+ length (length (car tem))) tem (cdr tem))) | |
| 511 length)) | |
| 512 | |
| 513 ;;;; more break hair | |
| 514 | |
| 515 (defun te-more-break () | |
| 516 (te-set-more-count t) | |
| 517 (make-local-variable 'te-more-old-point) | |
| 518 (setq te-more-old-point (point)) | |
| 519 (make-local-variable 'te-more-old-local-map) | |
| 520 (setq te-more-old-local-map (current-local-map)) | |
| 521 (use-local-map terminal-more-break-map) | |
| 522 (make-local-variable 'te-more-old-filter) | |
| 523 (setq te-more-old-filter (process-filter te-process)) | |
| 524 (make-local-variable 'te-more-old-mode-line-format) | |
| 525 (setq te-more-old-mode-line-format mode-line-format | |
| 526 mode-line-format (list "-- **MORE** " | |
| 527 mode-line-buffer-identification | |
| 528 "%-")) | |
| 529 (set-process-filter te-process | |
| 530 (function (lambda (process string) | |
| 531 (save-excursion | |
| 532 (set-buffer (process-buffer process)) | |
| 533 (setq te-pending-output (nconc te-pending-output | |
| 534 (list string)))) | |
| 535 (te-update-pending-output-display)))) | |
| 536 (te-update-pending-output-display) | |
| 537 (if (eq (window-buffer (selected-window)) (current-buffer)) | |
| 538 (message "More break ")) | |
| 539 (or (eobp) | |
| 540 (null terminal-more-break-insertion) | |
| 541 (save-excursion | |
| 542 (forward-char 1) | |
| 543 (delete-region (point) (+ (point) te-width)) | |
| 544 (insert terminal-more-break-insertion))) | |
| 545 (run-hooks 'terminal-more-break-hook) | |
| 546 (sit-for 0) ;get display to update | |
| 547 (throw 'te-process-output t)) | |
| 548 | |
| 549 (defun te-more-break-unwind () | |
| 550 (interactive) | |
| 551 (use-local-map te-more-old-local-map) | |
| 552 (set-process-filter te-process te-more-old-filter) | |
| 553 (goto-char te-more-old-point) | |
| 554 (setq mode-line-format te-more-old-mode-line-format) | |
| 555 (set-buffer-modified-p (buffer-modified-p)) | |
| 556 (let ((buffer-read-only nil)) | |
| 557 (cond ((eobp)) | |
| 558 (terminal-more-break-insertion | |
| 559 (forward-char 1) | |
| 560 (delete-region (point) | |
| 561 (+ (point) (length terminal-more-break-insertion))) | |
| 562 (te-insert-blank te-width) | |
| 563 (goto-char te-more-old-point))) | |
| 564 (setq te-more-old-point nil) | |
| 565 (let ((te-more-count 259259)) | |
| 566 (te-newline))) | |
| 567 ;(sit-for 0) | |
| 568 (te-process-output t)) | |
| 569 | |
| 570 (defun te-set-more-count (newline) | |
| 571 (let ((line (/ (- (point) (point-min)) (1+ te-width)))) | |
| 572 (if newline (setq line (1+ line))) | |
| 573 (cond ((= line te-height) | |
| 574 (setq te-more-count te-height)) | |
| 575 ;#### something is strange. Investigate this! | |
| 576 ((= line (1- te-height)) | |
| 577 (setq te-more-count te-height)) | |
| 578 ((or (< line (/ te-height 2)) | |
| 579 (> (- te-height line) 10)) | |
| 580 ;; break at end of this page | |
| 581 (setq te-more-count (- te-height line))) | |
| 582 (t | |
| 583 ;; migrate back towards top (ie bottom) of screen. | |
| 584 (setq te-more-count (- te-height | |
| 585 (if (> te-height 10) 2 1))))))) | |
| 586 | |
| 587 | |
| 588 ;;;; More or less straight-forward terminal escapes | |
| 589 | |
| 590 ;; ^j, meaning `newline' to non-display programs. | |
| 591 ;; (Who would think of ever writing a system which doesn't understand | |
| 592 ;; display terminals natively? Un*x: The Operating System of the Future.) | |
| 593 (defun te-newline () | |
| 594 "Move down a line, optionally do more processing, perhaps wrap/scroll, | |
| 595 move to start of new line, clear to end of line." | |
| 596 (end-of-line) | |
| 597 (cond ((not terminal-more-processing)) | |
| 598 ((< (setq te-more-count (1- te-more-count)) 0) | |
| 599 (te-set-more-count t)) | |
| 600 ((eq te-more-count 0) | |
| 601 ;; this doesn't return | |
| 602 (te-more-break))) | |
| 603 (if (eobp) | |
| 604 (progn | |
| 605 (delete-region (point-min) (+ (point-min) te-width)) | |
| 606 (goto-char (point-min)) | |
| 607 (if terminal-scrolling | |
| 608 (progn (delete-char 1) | |
| 609 (goto-char (point-max)) | |
| 610 (insert ?\n)))) | |
| 611 (forward-char 1) | |
| 612 (delete-region (point) (+ (point) te-width))) | |
| 613 (te-insert-blank te-width) | |
| 614 (beginning-of-line) | |
| 615 (te-set-window-start)) | |
| 616 | |
| 617 ;; ^p ^j | |
| 618 ;; Handle the `do' or `nl' termcap capability. | |
| 619 ;;#### I am not sure why this broken, obsolete, capability is here. | |
| 620 ;;#### Perhaps it is for VIle. No comment was made about why it | |
| 621 ;;#### was added (in "Sun Dec 6 01:22:27 1987 Richard Stallman") | |
| 622 (defun te-down-vertically-or-scroll () | |
| 623 "Move down a line vertically, or scroll at bottom." | |
| 624 (let ((column (current-column))) | |
| 625 (end-of-line) | |
| 626 (if (eobp) | |
| 627 (progn | |
| 628 (delete-region (point-min) (+ (point-min) te-width)) | |
| 629 (goto-char (point-min)) | |
| 630 (delete-char 1) | |
| 631 (goto-char (point-max)) | |
| 632 (insert ?\n) | |
| 633 (te-insert-blank te-width) | |
| 634 (beginning-of-line)) | |
| 635 (forward-line 1)) | |
| 636 (move-to-column column)) | |
| 637 (te-set-window-start)) | |
| 638 | |
| 639 ; ^p = x+32 y+32 | |
| 640 (defun te-move-to-position () | |
| 641 ;; must offset by #o40 since cretinous unix won't send a 004 char through | |
| 642 (let ((y (- (te-get-char) 32)) | |
| 643 (x (- (te-get-char) 32))) | |
| 644 (if (or (> x te-width) | |
| 645 (> y te-height)) | |
| 646 () ;(error "fucked %d %d" x y) | |
| 647 (goto-char (+ (point-min) x (* y (1+ te-width)))) | |
| 648 ;(te-set-window-start?) | |
| 649 )) | |
| 650 (setq te-more-count -1)) | |
| 651 | |
| 652 | |
| 653 | |
| 654 ;; ^p c | |
| 655 (defun te-clear-rest-of-line () | |
| 656 (save-excursion | |
| 657 (let ((n (- (point) (progn (end-of-line) (point))))) | |
| 658 (delete-region (point) (+ (point) n)) | |
| 659 (te-insert-blank (- n))))) | |
| 660 | |
| 661 | |
| 662 ;; ^p C | |
| 663 (defun te-clear-rest-of-screen () | |
| 664 (save-excursion | |
| 665 (te-clear-rest-of-line) | |
| 666 (while (progn (end-of-line) (not (eobp))) | |
| 667 (forward-char 1) (end-of-line) | |
| 668 (delete-region (- (point) te-width) (point)) | |
| 669 (te-insert-blank te-width)))) | |
| 670 | |
| 671 | |
| 672 ;; ^p ^l | |
| 673 (defun te-clear-screen () | |
| 674 ;; regenerate buffer to compensate for (nonexistent!!) bugs. | |
| 675 (erase-buffer) | |
| 676 (let ((i 0)) | |
| 677 (while (< i te-height) | |
| 678 (setq i (1+ i)) | |
| 679 (te-insert-blank te-width) | |
| 680 (insert ?\n))) | |
| 681 (delete-region (1- (point-max)) (point-max)) | |
| 682 (goto-char (point-min)) | |
| 683 (setq te-more-count -1)) | |
| 684 | |
| 685 | |
| 686 ;; ^p ^o count+32 | |
| 687 (defun te-insert-lines () | |
| 688 (if (not (bolp)) | |
| 689 ();(error "fooI") | |
| 690 (save-excursion | |
| 691 (let* ((line (- te-height (/ (- (point) (point-min)) (1+ te-width)) -1)) | |
| 692 (n (min (- (te-get-char) ?\ ) line)) | |
| 693 (i 0)) | |
| 694 (delete-region (- (point-max) (* n (1+ te-width))) (point-max)) | |
| 695 (if (eq (point) (point-max)) (insert ?\n)) | |
| 696 (while (< i n) | |
| 697 (setq i (1+ i)) | |
| 698 (te-insert-blank te-width) | |
| 699 (or (eq i line) (insert ?\n)))))) | |
| 700 (setq te-more-count -1)) | |
| 701 | |
| 702 | |
| 703 ;; ^p ^k count+32 | |
| 704 (defun te-delete-lines () | |
| 705 (if (not (bolp)) | |
| 706 ();(error "fooD") | |
| 707 (let* ((line (- te-height (/ (- (point) (point-min)) (1+ te-width)) -1)) | |
| 708 (n (min (- (te-get-char) ?\ ) line)) | |
| 709 (i 0)) | |
| 710 (delete-region (point) | |
| 711 (min (+ (point) (* n (1+ te-width))) (point-max))) | |
| 712 (save-excursion | |
| 713 (goto-char (point-max)) | |
| 714 (while (< i n) | |
| 715 (setq i (1+ i)) | |
| 716 (te-insert-blank te-width) | |
| 717 (or (eq i line) (insert ?\n)))))) | |
| 718 (setq te-more-count -1)) | |
| 719 | |
| 720 ;; ^p ^a | |
| 721 (defun te-beginning-of-line () | |
| 722 (beginning-of-line)) | |
| 723 | |
| 724 ;; ^p ^b | |
| 725 (defun te-backward-char () | |
| 726 (if (not (bolp)) | |
| 727 (backward-char 1))) | |
| 728 | |
| 729 ;; ^p ^f | |
| 730 (defun te-forward-char () | |
| 731 (if (not (eolp)) | |
| 732 (forward-char 1))) | |
| 733 | |
| 734 | |
| 735 ;; ^p * | |
| 736 (defun te-change-attribute () | |
| 737 (let* ((attribute (te-get-char)) | |
| 738 (on (= (te-get-char) ?1)) | |
| 739 (standout (assq 'standout te-current-attributes)) | |
| 740 (underline (assq 'underline te-current-attributes)) | |
| 741 (frob (function (lambda () | |
| 742 ;; This would be even more of a combinatorial mess if I | |
| 743 ;; decided I wanted to support anything more than the two | |
| 744 ;; standout and underline attributes. | |
| 745 (setq te-current-face | |
| 746 (or (cdr (assoc te-current-attributes | |
| 747 '((((standout . t) (underline . nil)) | |
| 748 . terminal-standout) | |
| 749 (((standout . nil) (underline . t)) | |
| 750 . terminal-standout) | |
| 751 (((standout . t) (underline . nil)) | |
| 752 . terminal-standout-underline)))) | |
| 753 'terminal-default)))))) | |
| 754 (cond ((= attribute ?+) ;standout on/off | |
| 755 (setcdr standout on) | |
| 756 (funcall frob)) | |
| 757 ((= attribute ?_) ;underline on/off | |
| 758 (setcdr underline on) | |
| 759 (funcall frob)) | |
| 760 ;; reverse, blink, half-bright, double-bright, blank, protect | |
| 761 ;; ??Colours?? | |
| 762 (t ;; #\space | |
| 763 (setcdr underline nil) | |
| 764 (setcdr standout nil) | |
| 765 (setq te-current-face 'terminal-default))))) | |
| 766 | |
| 767 | |
| 768 ;; 0177 | |
| 769 (defun te-delete () | |
| 770 (if (bolp) | |
| 771 () | |
| 772 (delete-region (1- (point)) (point)) | |
| 773 (te-insert-blank 1) | |
| 774 (forward-char -1))) | |
| 775 | |
| 776 ;; ^p ^g | |
| 777 (defun te-beep () | |
| 778 (beep)) | |
| 779 | |
| 780 | |
| 781 ;; ^p _ count+32 | |
| 782 (defun te-insert-spaces () | |
| 783 (let* ((p (point)) | |
| 784 (n (min (- (te-get-char) 32) | |
| 785 (- (progn (end-of-line) (point)) p)))) | |
| 786 (if (<= n 0) | |
| 787 nil | |
| 788 (delete-char (- n)) | |
| 789 (goto-char p) | |
| 790 (insert-char ?\ n)) | |
| 791 (goto-char p))) | |
| 792 | |
| 793 ;; ^p d count+32 (should be ^p ^d but cretinous un*x won't send ^d chars!!!) | |
| 794 (defun te-delete-char () | |
| 795 (let* ((p (point)) | |
| 796 (n (min (- (te-get-char) 32) | |
| 797 (- (progn (end-of-line) (point)) p)))) | |
| 798 (if (<= n 0) | |
| 799 nil | |
| 800 (te-insert-blank n) | |
| 801 (goto-char p) | |
| 802 (delete-char n)) | |
| 803 (goto-char p))) | |
| 804 | |
| 805 | |
| 806 | |
| 807 ;; disgusting unix-required shit | |
| 808 ;; Are we living twenty years in the past yet? | |
| 809 | |
| 810 (defun te-losing-unix () | |
| 811 ;(what lossage) | |
| 812 ;(message "fucking-unix: %d" char) | |
| 813 ) | |
| 814 | |
| 815 ;; ^i | |
| 816 (defun te-output-tab () | |
| 817 (let* ((p (point)) | |
| 818 (x (- p (progn (beginning-of-line) (point)))) | |
| 819 (l (min (- 8 (logand x 7)) | |
| 820 (progn (end-of-line) (- (point) p))))) | |
| 821 (goto-char (+ p l)))) | |
| 822 | |
| 823 ;; Also: | |
| 824 ;; ^m => beginning-of-line (for which it -should- be using ^p ^a, right?!!) | |
| 825 ;; ^g => te-beep (for which it should use ^p ^g) | |
| 826 ;; ^h => te-backward-char (for which it should use ^p ^b) | |
| 827 | |
| 828 | |
| 829 | |
| 830 (defun te-filter (process string) | |
| 831 (let* ((obuf (current-buffer))) | |
| 832 ;; can't use save-excursion, as that preserves point, which we don't want | |
| 833 (unwind-protect | |
| 834 (progn | |
| 835 (set-buffer (process-buffer process)) | |
| 836 (goto-char te-saved-point) | |
| 837 (and (bufferp te-log-buffer) | |
| 838 (if (null (buffer-name te-log-buffer)) | |
| 839 ;; killed | |
| 840 (setq te-log-buffer nil) | |
| 841 (set-buffer te-log-buffer) | |
| 842 (goto-char (point-max)) | |
| 843 (insert-before-markers string) | |
| 844 (set-buffer (process-buffer process)))) | |
| 845 (setq te-pending-output (nconc te-pending-output (list string))) | |
| 846 (te-update-pending-output-display) | |
| 847 (te-process-output (eq (current-buffer) | |
| 848 (window-buffer (selected-window)))) | |
| 849 (set-buffer (process-buffer process)) | |
| 850 (setq te-saved-point (point))) | |
| 851 (set-buffer obuf)))) | |
| 852 | |
| 853 ;; fucking unix has -such- braindamaged lack of tty control... | |
| 854 (defun te-process-output (preemptable) | |
| 855 ;;#### There seems no good reason to ever disallow preemption | |
| 856 (setq preemptable t) | |
| 857 (catch 'te-process-output | |
| 858 (let ((buffer-read-only nil) | |
| 859 (string nil) ostring start char (matchpos nil)) | |
| 860 (while (cdr te-pending-output) | |
| 861 (setq ostring string | |
| 862 start (car te-pending-output) | |
| 863 string (car (cdr te-pending-output)) | |
| 864 char (aref string start)) | |
| 865 (if (eq (setq start (1+ start)) (length string)) | |
| 866 (progn (setq te-pending-output | |
| 867 (cons 0 (cdr (cdr te-pending-output))) | |
| 868 start 0 | |
| 869 string (car (cdr te-pending-output))) | |
| 870 (te-update-pending-output-display)) | |
| 871 (setcar te-pending-output start)) | |
| 872 (if (and (> char ?\037) (< char ?\377)) | |
| 873 (cond ((eolp) | |
| 874 ;; unread char | |
| 875 (if (eq start 0) | |
| 876 (setq te-pending-output | |
| 877 (cons 0 (cons (make-string 1 char) | |
| 878 (cdr te-pending-output)))) | |
| 879 (setcar te-pending-output (1- start))) | |
| 880 (te-newline)) | |
| 881 ((null string) | |
| 882 (delete-char 1) (insert char) | |
| 883 (put-text-property (1- (point)) (point) | |
| 884 'face te-current-face) | |
| 885 (te-redisplay-if-necessary 1)) | |
| 886 (t | |
| 887 (let ((end (or (and (eq ostring string) matchpos) | |
| 888 (setq matchpos (string-match | |
| 889 "[\000-\037\177-\377]" | |
| 890 string start)) | |
| 891 (length string)))) | |
| 892 (delete-char 1) (insert char) | |
| 893 (setq char (point)) | |
| 894 (put-text-property (1- char) char 'face te-current-face) | |
| 895 (end-of-line) | |
| 896 (setq end (min end (+ start (- (point) char)))) | |
| 897 (goto-char char) | |
| 898 (if (eq end matchpos) (setq matchpos nil)) | |
| 899 (delete-region (point) (+ (point) (- end start))) | |
| 900 (setq char (point)) | |
| 901 (insert (if (and (eq start 0) | |
| 902 (eq end (length string))) | |
| 903 string | |
| 904 (substring string start end))) | |
| 905 (put-text-property char (point) 'face te-current-face) | |
| 906 (if (eq end (length string)) | |
| 907 (setq te-pending-output | |
| 908 (cons 0 (cdr (cdr te-pending-output)))) | |
| 909 (setcar te-pending-output end)) | |
| 910 (te-redisplay-if-necessary (1+ (- end start)))))) | |
| 911 ;; I suppose if I split the guts of this out into a separate | |
| 912 ;; function we could trivially emulate different terminals | |
| 913 ;; Who cares in any case? (Apart from stupid losers using rlogin) | |
| 914 (funcall | |
| 915 (if (eq char ?\^p) | |
| 916 (or (cdr (assq (te-get-char) | |
| 917 '((?= . te-move-to-position) | |
| 918 (?c . te-clear-rest-of-line) | |
| 919 (?C . te-clear-rest-of-screen) | |
| 920 (?\C-o . te-insert-lines) | |
| 921 (?\C-k . te-delete-lines) | |
| 922 (?* . te-change-attribute) | |
| 923 ;; not necessary, but help sometimes. | |
| 924 (?\C-a . te-beginning-of-line) | |
| 925 (?\C-b . te-backward-char) | |
| 926 ;; should be C-d, but un*x | |
| 927 ;; pty's won't send \004 through! | |
| 928 ;; Can you believe this? | |
| 929 (?d . te-delete-char) | |
| 930 (?_ . te-insert-spaces) | |
| 931 ;; random | |
| 932 (?\C-f . te-forward-char) | |
| 933 (?\C-g . te-beep) | |
| 934 (?\C-j . te-down-vertically-or-scroll) | |
| 935 (?\C-l . te-clear-screen) | |
| 936 ))) | |
| 937 'te-losing-unix) | |
| 938 (or (cdr (assq char | |
| 939 '((?\C-j . te-newline) | |
| 940 (?\177 . te-delete) | |
| 941 ;; Did I ask to be sent these characters? | |
| 942 ;; I don't remember doing so, either. | |
| 943 ;; (Perhaps some operating system or | |
| 944 ;; other is completely incompetent...) | |
| 945 (?\C-m . te-beginning-of-line) ;fuck me harder | |
| 946 (?\C-g . te-beep) ;again and again! | |
| 947 (?\C-h . te-backward-char) ;wa12id!! | |
| 948 (?\C-i . te-output-tab)))) ;(spiked) | |
| 949 'te-losing-unix))) ;That feels better | |
| 950 (te-redisplay-if-necessary 1)) | |
| 951 (and preemptable | |
| 952 (input-pending-p) | |
| 953 ;; preemptable output! Oh my!! | |
| 954 (throw 'te-process-output t))))) | |
| 955 ;; We must update window-point in every window displaying our buffer | |
| 956 (let* ((s (selected-window)) | |
| 957 (w s)) | |
| 958 (while (not (eq s (setq w (next-window w)))) | |
| 959 (if (eq (window-buffer w) (current-buffer)) | |
| 960 (set-window-point w (point)))))) | |
| 961 | |
| 962 (defun te-get-char () | |
| 963 (if (cdr te-pending-output) | |
| 964 (let ((start (car te-pending-output)) | |
| 965 (string (car (cdr te-pending-output)))) | |
| 966 (prog1 (aref string start) | |
| 967 (if (eq (setq start (1+ start)) (length string)) | |
| 968 (setq te-pending-output (cons 0 (cdr (cdr te-pending-output)))) | |
| 969 (setcar te-pending-output start)))) | |
| 970 (catch 'char | |
| 971 (let ((filter (process-filter te-process))) | |
| 972 (unwind-protect | |
| 973 (progn | |
| 974 (set-process-filter te-process | |
| 975 (function (lambda (p s) | |
| 976 (or (eq (length s) 1) | |
| 977 (setq te-pending-output (list 1 s))) | |
| 978 (throw 'char (aref s 0))))) | |
| 979 (accept-process-output te-process)) | |
| 980 (set-process-filter te-process filter)))))) | |
| 981 | |
| 982 | |
| 983 (defun te-redisplay-if-necessary (length) | |
| 984 (and (<= (setq te-redisplay-count (- te-redisplay-count length)) 0) | |
| 985 (eq (current-buffer) (window-buffer (selected-window))) | |
| 986 (waiting-for-user-input-p) | |
| 987 (progn (te-update-pending-output-display) | |
| 988 (sit-for 0) | |
| 989 (setq te-redisplay-count terminal-redisplay-interval)))) | |
| 990 | |
| 991 (defun te-update-pending-output-display () | |
| 992 (if (null (cdr te-pending-output)) | |
| 993 (setq te-pending-output-info "") | |
| 994 (let ((length (te-pending-output-length))) | |
| 995 (if (< length 1500) | |
| 996 (setq te-pending-output-info "") | |
| 997 (setq te-pending-output-info (format "(%dK chars output pending) " | |
| 998 (/ (+ length 512) 1024)))))) | |
| 999 ;; update mode line | |
| 1000 (set-buffer-modified-p (buffer-modified-p))) | |
| 1001 | |
| 1002 | |
| 1003 (defun te-sentinel (process message) | |
| 1004 (cond ((eq (process-status process) 'run)) | |
| 1005 ((null (buffer-name (process-buffer process)))) ;deleted | |
| 1006 (t (let ((b (current-buffer))) | |
| 1007 (save-excursion | |
| 1008 (set-buffer (process-buffer process)) | |
| 1009 (setq buffer-read-only nil) | |
| 1010 (fundamental-mode) | |
| 1011 (goto-char (point-max)) | |
| 1012 (delete-blank-lines) | |
| 1013 (delete-horizontal-space) | |
| 1014 (insert "\n*******\n" message "*******\n")) | |
| 1015 (if (and (eq b (process-buffer process)) | |
| 1016 (waiting-for-user-input-p)) | |
| 1017 (progn (goto-char (point-max)) | |
| 1018 (recenter -1))))))) | |
| 1019 | |
| 1020 (defvar te-stty-string "stty -nl new dec echo" | |
| 1021 "Command string (to be interpreted by \"sh\") which sets the modes | |
| 1022 of the virtual terminal to be appropriate for interactive use.") | |
| 1023 | |
| 1024 (defvar explicit-shell-file-name nil | |
| 1025 "*If non-nil, is file name to use for explicitly requested inferior shell.") | |
| 1026 | |
| 1027 ;;;###autoload | |
| 1028 (defun terminal-emulator (buffer program args &optional width height) | |
| 1029 "Under a display-terminal emulator in BUFFER, run PROGRAM on arguments ARGS. | |
| 1030 ARGS is a list of argument-strings. Remaining arguments are WIDTH and HEIGHT. | |
| 1031 BUFFER's contents are made an image of the display generated by that program, | |
| 1032 and any input typed when BUFFER is the current Emacs buffer is sent to that | |
| 1033 program an keyboard input. | |
| 1034 | |
| 1035 Interactively, BUFFER defaults to \"*terminal*\" and PROGRAM and ARGS | |
| 1036 are parsed from an input-string using your usual shell. | |
| 1037 WIDTH and HEIGHT are determined from the size of the current window | |
| 1038 -- WIDTH will be one less than the window's width, HEIGHT will be its height. | |
| 1039 | |
| 1040 To switch buffers and leave the emulator, or to give commands | |
| 1041 to the emulator itself (as opposed to the program running under it), | |
| 1042 type Control-^. The following character is an emulator command. | |
| 1043 Type Control-^ twice to send it to the subprogram. | |
| 1044 This escape character may be changed using the variable `terminal-escape-char'. | |
| 1045 | |
| 1046 `Meta' characters may not currently be sent through the terminal emulator. | |
| 1047 | |
| 1048 Here is a list of some of the variables which control the behaviour | |
| 1049 of the emulator -- see their documentation for more information: | |
| 1050 terminal-escape-char, terminal-scrolling, terminal-more-processing, | |
| 1051 terminal-redisplay-interval. | |
| 1052 | |
| 1053 This function calls the value of terminal-mode-hook if that exists | |
| 1054 and is non-nil after the terminal buffer has been set up and the | |
| 1055 subprocess started. | |
| 1056 | |
| 1057 Presently with `termcap' only; if somebody sends us code to make this | |
| 1058 work with `terminfo' we will try to use it." | |
| 1059 (interactive | |
| 1060 (cons (save-excursion | |
| 1061 (set-buffer (get-buffer-create "*terminal*")) | |
| 1062 (buffer-name (if (or (not (boundp 'te-process)) | |
| 1063 (null te-process) | |
| 1064 (not (eq (process-status te-process) | |
| 1065 'run))) | |
| 1066 (current-buffer) | |
| 1067 (generate-new-buffer "*terminal*")))) | |
| 1068 (append | |
| 1069 (let* ((default-s | |
| 1070 ;; Default shell is same thing M-x shell uses. | |
| 1071 (or explicit-shell-file-name | |
| 1072 (getenv "ESHELL") | |
| 1073 (getenv "SHELL") | |
| 1074 "/bin/sh")) | |
| 1075 (s (read-shell-command | |
| 1076 (format "Run program in emulator: (default %s) " | |
| 1077 default-s)))) | |
| 1078 (if (equal s "") | |
| 1079 (list default-s '()) | |
| 1080 (te-parse-program-and-args s)))))) | |
| 1081 (switch-to-buffer buffer) | |
| 1082 (if (null width) (setq width (- (window-width (selected-window)) 1))) | |
| 1083 (if (null height) (setq height (- (window-height (selected-window)) 1))) | |
| 1084 (terminal-mode) | |
| 1085 (setq te-width width te-height height) | |
| 1086 (setq mode-line-buffer-identification | |
| 1087 (list (format "Emacs terminal %dx%d: %%b " te-width te-height) | |
| 1088 'te-pending-output-info)) | |
| 1089 (let ((buffer-read-only nil)) | |
| 1090 (te-clear-screen)) | |
| 1091 (let (process) | |
| 1092 (while (setq process (get-buffer-process (current-buffer))) | |
| 1093 (if (y-or-n-p (format "Kill process %s? " (process-name process))) | |
| 1094 (delete-process process) | |
| 1095 (error "Process %s not killed" (process-name process))))) | |
| 1096 (condition-case err | |
| 1097 (let ((termcap | |
| 1098 ;; Because of Unix Brain Death(tm), we can't change | |
| 1099 ;; the terminal type of a running process, and so | |
| 1100 ;; terminal size and scrollability are wired-down | |
| 1101 ;; at this point. ("Detach? What's that?") | |
| 1102 (concat (format "emacs-virtual:co#%d:li#%d:%s:km:" | |
| 1103 ;; Sigh. These can't be dynamically changed. | |
| 1104 te-width te-height (if terminal-scrolling | |
| 1105 "" "ns:")) | |
| 1106 ;;-- Basic things | |
| 1107 ;; cursor-motion, bol, forward/backward char | |
| 1108 "cm=^p=%+ %+ :cr=^p^a:le=^p^b:nd=^p^f:" | |
| 1109 ;; newline, clear eof/eof, audible bell | |
| 1110 "nw=^j:ce=^pc:cd=^pC:cl=^p^l:bl=^p^g:" | |
| 1111 ;; insert/delete char/line | |
| 1112 "IC=^p_%+ :DC=^pd%+ :AL=^p^o%+ :DL=^p^k%+ :" | |
| 1113 ;;-- Not-widely-known (ie nonstandard) flags, which mean | |
| 1114 ;; o writing in the last column of the last line | |
| 1115 ;; doesn't cause idiotic scrolling, and | |
| 1116 ;; o don't use idiotische c-s/c-q sogenannte | |
| 1117 ;; ``flow control'' auf keinen Fall. | |
| 1118 "LP:NF:" | |
| 1119 ;;-- For stupid or obsolete programs | |
| 1120 "ic=^p_!:dc=^pd!:al=^p^o!:dl=^p^k!:ho=^p= :" | |
| 1121 ;;-- For disgusting programs. | |
| 1122 ;; (VI? What losers need these, I wonder?) | |
| 1123 "im=:ei=:dm=:ed=:mi:do=^p^j:nl=^p^j:bs:" | |
| 1124 "ms:me=^p* :" | |
| 1125 (if (face-equal 'terminal-default 'terminal-standout) | |
| 1126 "" "so=^p*+1:se=^p*+0") | |
| 1127 (if (face-equal 'terminal-default 'terminal-underline) | |
| 1128 "" "us=^p*_1:ue=^p*_0") | |
| 1129 ))) | |
| 1130 (if (fboundp 'start-subprocess) | |
| 1131 ;; this winning function would do everything, except that | |
| 1132 ;; rms doesn't want it. | |
| 1133 (setq te-process (start-subprocess "terminal-emulator" | |
| 1134 program args | |
| 1135 'channel-type 'terminal | |
| 1136 'filter 'te-filter | |
| 1137 'buffer (current-buffer) | |
| 1138 'sentinel 'te-sentinel | |
| 1139 'modify-environment | |
| 1140 (list (cons "TERM" "emacs-virtual") | |
| 1141 (cons "TERMCAP" termcap)))) | |
| 1142 ;; so instead we resort to this... | |
| 1143 (setq te-process | |
| 1144 (let ((process-environment | |
| 1145 (cons "TERM=emacs-virtual" | |
| 1146 (cons (concat "TERMCAP=" termcap) | |
| 1147 process-environment)))) | |
| 1148 (start-process "terminal-emulator" | |
| 1149 (current-buffer) | |
| 1150 "/bin/sh" "-c" | |
| 1151 ;; Yuck!!! Start a shell to set some | |
| 1152 ;; terminal control characteristics. | |
| 1153 ;; Then exec the program we wanted. | |
| 1154 (format "%s; exec %s" | |
| 1155 te-stty-string | |
| 1156 (mapconcat 'te-quote-arg-for-sh | |
| 1157 (cons program args) | |
| 1158 " "))))) | |
| 1159 (set-process-filter te-process 'te-filter) | |
| 1160 (set-process-sentinel te-process 'te-sentinel))) | |
| 1161 (error (fundamental-mode) | |
| 1162 (signal (car err) (cdr err)))) | |
| 1163 ;; sigh | |
| 1164 (setq inhibit-quit t) ;sport death | |
| 1165 (use-local-map terminal-map) | |
| 1166 (run-hooks 'terminal-mode-hook) | |
| 1167 (message "Entering emacs terminal-emulator... Type %s %s for help" | |
| 1168 (single-key-description terminal-escape-char) | |
| 1169 (mapconcat 'single-key-description | |
| 1170 (where-is-internal 'te-escape-help | |
| 1171 terminal-escape-map | |
| 1172 t) | |
| 1173 " "))) | |
| 1174 | |
| 1175 | |
| 1176 (defun te-parse-program-and-args (s) | |
| 1177 (cond ((string-match "\\`\\([a-zA-Z0-9-+=_.@/:]+[ \t]*\\)+\\'" s) | |
| 1178 (let ((l ()) (p 0)) | |
| 1179 (while p | |
| 1180 (setq l (cons (if (string-match | |
| 1181 "\\([a-zA-Z0-9-+=_.@/:]+\\)\\([ \t]+\\)*" | |
| 1182 s p) | |
| 1183 (prog1 (substring s p (match-end 1)) | |
| 1184 (setq p (match-end 0)) | |
| 1185 (if (eq p (length s)) (setq p nil))) | |
| 1186 (prog1 (substring s p) | |
| 1187 (setq p nil))) | |
| 1188 l))) | |
| 1189 (setq l (nreverse l)) | |
| 1190 (list (car l) (cdr l)))) | |
| 1191 ((and (string-match "[ \t]" s) (not (file-exists-p s))) | |
| 1192 (list shell-file-name (list "-c" (concat "exec " s)))) | |
| 1193 (t (list s ())))) | |
| 1194 | |
| 1195 (put 'terminal-mode 'mode-class 'special) | |
| 1196 ;; This is only separated out from function terminal-emulator | |
| 1197 ;; to keep the latter a little more managable. | |
| 1198 (defun terminal-mode () | |
| 1199 "Set up variables for use f the terminal-emualtor. | |
| 1200 One should not call this -- it is an internal function | |
| 1201 of the terminal-emulator" | |
| 1202 (kill-all-local-variables) | |
| 1203 (buffer-disable-undo (current-buffer)) | |
| 1204 (setq major-mode 'terminal-mode) | |
| 1205 (setq mode-name "terminal") | |
| 1206 ; (make-local-variable 'Helper-return-blurb) | |
| 1207 ; (setq Helper-return-blurb "return to terminal simulator") | |
| 1208 (setq mode-line-process '(": %s")) | |
| 1209 (setq buffer-read-only t) | |
| 1210 (setq truncate-lines t) | |
| 1211 (make-local-variable 'terminal-escape-char) | |
| 1212 (setq terminal-escape-char (default-value 'terminal-escape-char)) | |
| 1213 (make-local-variable 'terminal-scrolling) | |
| 1214 (setq terminal-scrolling (default-value 'terminal-scrolling)) | |
| 1215 (make-local-variable 'terminal-more-processing) | |
| 1216 (setq terminal-more-processing (default-value 'terminal-more-processing)) | |
| 1217 (make-local-variable 'terminal-redisplay-interval) | |
| 1218 (setq terminal-redisplay-interval (default-value 'terminal-redisplay-interval)) | |
| 1219 (make-local-variable 'te-width) | |
| 1220 (make-local-variable 'te-height) | |
| 1221 (make-local-variable 'te-process) | |
| 1222 (make-local-variable 'te-pending-output) | |
| 1223 (setq te-pending-output (list 0)) | |
| 1224 (make-local-variable 'te-saved-point) | |
| 1225 (setq te-saved-point (point-min)) | |
| 1226 (make-local-variable 'te-pending-output-info) ;for the mode line | |
| 1227 (setq te-pending-output-info "") | |
| 1228 (make-local-variable 'inhibit-quit) | |
| 1229 ;(setq inhibit-quit t) | |
| 1230 (make-local-variable 'te-log-buffer) | |
| 1231 (setq te-log-buffer nil) | |
| 1232 (make-local-variable 'te-more-count) | |
| 1233 (setq te-more-count -1) | |
| 1234 (make-local-variable 'te-redisplay-count) | |
| 1235 (setq te-redisplay-count terminal-redisplay-interval) | |
| 1236 (make-local-variable 'te-current-face) | |
| 1237 (setq te-current-face 'terminal-default) | |
| 1238 (make-local-variable 'te-current-attributes) | |
| 1239 (setq te-current-attributes (list (cons 'standout nil) | |
| 1240 (cons 'underline nil))) | |
| 1241 ;(use-local-map terminal-mode-map) | |
| 1242 ;; terminal-mode-hook is called above in function terminal-emulator | |
| 1243 (make-local-variable 'meta-prefix-char) | |
| 1244 (setq meta-prefix-char -1) ;death to ASCII lossage | |
| 1245 ) | |
| 1246 | |
| 1247 ;;;; what a complete loss | |
| 1248 | |
| 1249 (defun te-quote-arg-for-sh (fuckme) | |
| 1250 (cond ((string-match "\\`[a-zA-Z0-9-+=_.@/:]+\\'" | |
| 1251 fuckme) | |
| 1252 fuckme) | |
| 1253 ((not (string-match "[$]" fuckme)) | |
| 1254 ;; "[\"\\]" are special to sh and the lisp reader in the same way | |
| 1255 (prin1-to-string fuckme)) | |
| 1256 (t | |
| 1257 (let ((harder "") | |
| 1258 (cretin 0) | |
| 1259 (stupid 0)) | |
| 1260 (while (cond ((>= cretin (length fuckme)) | |
| 1261 nil) | |
| 1262 ;; this is the set of chars magic with "..." in `sh' | |
| 1263 ((setq stupid (string-match "[\"\\$]" | |
| 1264 fuckme cretin)) | |
| 1265 t) | |
| 1266 (t (setq harder (concat harder | |
| 1267 (substring fuckme cretin))) | |
| 1268 nil)) | |
| 1269 (setq harder (concat harder (substring fuckme cretin stupid) | |
| 1270 ;; Can't use ?\\ since `concat' | |
| 1271 ;; unfortunately does prin1-to-string | |
| 1272 ;; on fixna. Amazing. | |
| 1273 "\\" | |
| 1274 (substring fuckme | |
| 1275 stupid | |
| 1276 (1+ stupid))) | |
| 1277 cretin (1+ stupid))) | |
| 1278 (concat "\"" harder "\""))))) |