Fix buffer-list rename&refresh after after killing a buffer in ido.
[emacs.git] / lisp / arc-mode.el
blob1cb3ade9a2d797cb7f61a08d5d7e770fa819333c
1 ;;; arc-mode.el --- simple editing of archives
3 ;; Copyright (C) 1995, 1997, 1998, 2001, 2002, 2003, 2004, 2005, 2006,
4 ;; 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Morten Welinder <terra@gnu.org>
7 ;; Keywords: files archives msdog editing major-mode
8 ;; Favourite-brand-of-beer: None, I hate beer.
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
25 ;;; Commentary:
27 ;; NAMING: "arc" is short for "archive" and does not refer specifically
28 ;; to files whose name end in ".arc"
30 ;; This code does not decode any files internally, although it does
31 ;; understand the directory level of the archives. For this reason,
32 ;; you should expect this code to need more fiddling than tar-mode.el
33 ;; (although it at present has fewer bugs :-) In particular, I have
34 ;; not tested this under Ms-Dog myself.
35 ;; -------------------------------------
36 ;; INTERACTION: arc-mode.el should play together with
38 ;; * ange-ftp.el: Remote archives (i.e., ones that ange-ftp has brought
39 ;; to you) are handled by doing all updates on a local
40 ;; copy. When you make changes to a remote file the
41 ;; changes will first take effect when the archive buffer
42 ;; is saved. You will be warned about this.
44 ;; * dos-fns.el: (Part of Emacs 19). You get automatic ^M^J <--> ^J
45 ;; conversion.
47 ;; arc-mode.el does not work well with crypt++.el; for the archives as
48 ;; such this could be fixed (but wouldn't be useful) by declaring such
49 ;; archives to be "remote". For the members this is a general Emacs
50 ;; problem that 19.29's file formats may fix.
51 ;; -------------------------------------
52 ;; ARCHIVE TYPES: Currently only the archives below are handled, but the
53 ;; structure for handling just about anything is in place.
55 ;; Arc Lzh Zip Zoo Rar
56 ;; ----------------------------------------
57 ;; View listing Intern Intern Intern Intern Y
58 ;; Extract member Y Y Y Y Y
59 ;; Save changed member Y Y Y Y N
60 ;; Add new member N N N N N
61 ;; Delete member Y Y Y Y N
62 ;; Rename member Y Y N N N
63 ;; Chmod - Y Y - N
64 ;; Chown - Y - - N
65 ;; Chgrp - Y - - N
67 ;; Special thanks to Bill Brodie <wbrodie@panix.com> for very useful tips
68 ;; on the first released version of this package.
70 ;; This code is partly based on tar-mode.el from Emacs.
71 ;; -------------------------------------
72 ;; ARCHIVE STRUCTURES:
73 ;; (This is mostly for myself.)
75 ;; ARC A series of (header,file). No interactions among members.
77 ;; LZH A series of (header,file). Headers are checksummed. No
78 ;; interaction among members.
79 ;; Headers come in three flavours called level 0, 1 and 2 headers.
80 ;; Level 2 header is free of DOS specific restrictions and most
81 ;; prevalently used. Also level 1 and 2 headers consist of base
82 ;; and extension headers. For more details see
83 ;; http://homepage1.nifty.com/dangan/en/Content/Program/Java/jLHA/Notes/Notes.html
84 ;; http://www.osirusoft.com/joejared/lzhformat.html
86 ;; ZIP A series of (lheader,fil) followed by a "central directory"
87 ;; which is a series of (cheader) followed by an end-of-
88 ;; central-dir record possibly followed by junk. The e-o-c-d
89 ;; links to c-d. cheaders link to lheaders which are basically
90 ;; cut-down versions of the cheaders.
92 ;; ZOO An archive header followed by a series of (header,file).
93 ;; Each member header points to the next. The archive is
94 ;; terminated by a bogus header with a zero next link.
95 ;; -------------------------------------
96 ;; HOOKS: `foo' means one of the supported archive types.
98 ;; archive-mode-hook
99 ;; archive-foo-mode-hook
100 ;; archive-extract-hooks
102 ;;; Code:
104 ;; -------------------------------------------------------------------------
105 ;;; Section: Configuration.
107 (defgroup archive nil
108 "Simple editing of archives."
109 :group 'data)
111 (defgroup archive-arc nil
112 "ARC-specific options to archive."
113 :group 'archive)
115 (defgroup archive-lzh nil
116 "LZH-specific options to archive."
117 :group 'archive)
119 (defgroup archive-zip nil
120 "ZIP-specific options to archive."
121 :group 'archive)
123 (defgroup archive-zoo nil
124 "ZOO-specific options to archive."
125 :group 'archive)
127 (defcustom archive-tmpdir
128 ;; make-temp-name is safe here because we use this name
129 ;; to create a directory.
130 (make-temp-name
131 (expand-file-name (if (eq system-type 'ms-dos) "ar" "archive.tmp")
132 temporary-file-directory))
133 "Directory for temporary files made by `arc-mode.el'."
134 :type 'directory
135 :group 'archive)
137 (defcustom archive-remote-regexp "^/[^/:]*[^/:.]:"
138 "Regexp recognizing archive files names that are not local.
139 A non-local file is one whose file name is not proper outside Emacs.
140 A local copy of the archive will be used when updating."
141 :type 'regexp
142 :group 'archive)
144 (defcustom archive-extract-hooks nil
145 "Hooks to run when an archive member has been extracted."
146 :type 'hook
147 :group 'archive)
148 ;; ------------------------------
149 ;; Arc archive configuration
151 ;; We always go via a local file since there seems to be no reliable way
152 ;; to extract to stdout without junk getting added.
153 (defcustom archive-arc-extract
154 '("arc" "x")
155 "Program and its options to run in order to extract an arc file member.
156 Extraction should happen to the current directory. Archive and member
157 name will be added."
158 :type '(list (string :tag "Program")
159 (repeat :tag "Options"
160 :inline t
161 (string :format "%v")))
162 :group 'archive-arc)
164 (defcustom archive-arc-expunge
165 '("arc" "d")
166 "Program and its options to run in order to delete arc file members.
167 Archive and member names will be added."
168 :type '(list (string :tag "Program")
169 (repeat :tag "Options"
170 :inline t
171 (string :format "%v")))
172 :group 'archive-arc)
174 (defcustom archive-arc-write-file-member
175 '("arc" "u")
176 "Program and its options to run in order to update an arc file member.
177 Archive and member name will be added."
178 :type '(list (string :tag "Program")
179 (repeat :tag "Options"
180 :inline t
181 (string :format "%v")))
182 :group 'archive-arc)
183 ;; ------------------------------
184 ;; Lzh archive configuration
186 (defcustom archive-lzh-extract
187 '("lha" "pq")
188 "Program and its options to run in order to extract an lzh file member.
189 Extraction should happen to standard output. Archive and member name will
190 be added."
191 :type '(list (string :tag "Program")
192 (repeat :tag "Options"
193 :inline t
194 (string :format "%v")))
195 :group 'archive-lzh)
197 (defcustom archive-lzh-expunge
198 '("lha" "d")
199 "Program and its options to run in order to delete lzh file members.
200 Archive and member names will be added."
201 :type '(list (string :tag "Program")
202 (repeat :tag "Options"
203 :inline t
204 (string :format "%v")))
205 :group 'archive-lzh)
207 (defcustom archive-lzh-write-file-member
208 '("lha" "a")
209 "Program and its options to run in order to update an lzh file member.
210 Archive and member name will be added."
211 :type '(list (string :tag "Program")
212 (repeat :tag "Options"
213 :inline t
214 (string :format "%v")))
215 :group 'archive-lzh)
216 ;; ------------------------------
217 ;; Zip archive configuration
219 (defcustom archive-zip-extract
220 (if (and (not (executable-find "unzip"))
221 (executable-find "pkunzip"))
222 '("pkunzip" "-e" "-o-")
223 '("unzip" "-qq" "-c"))
224 "Program and its options to run in order to extract a zip file member.
225 Extraction should happen to standard output. Archive and member name will
226 be added."
227 :type '(list (string :tag "Program")
228 (repeat :tag "Options"
229 :inline t
230 (string :format "%v")))
231 :group 'archive-zip)
233 ;; For several reasons the latter behavior is not desirable in general.
234 ;; (1) It uses more disk space. (2) Error checking is worse or non-
235 ;; existent. (3) It tends to do funny things with other systems' file
236 ;; names.
238 (defcustom archive-zip-expunge
239 (if (and (not (executable-find "zip"))
240 (executable-find "pkzip"))
241 '("pkzip" "-d")
242 '("zip" "-d" "-q"))
243 "Program and its options to run in order to delete zip file members.
244 Archive and member names will be added."
245 :type '(list (string :tag "Program")
246 (repeat :tag "Options"
247 :inline t
248 (string :format "%v")))
249 :group 'archive-zip)
251 (defcustom archive-zip-update
252 (if (and (not (executable-find "zip"))
253 (executable-find "pkzip"))
254 '("pkzip" "-u" "-P")
255 '("zip" "-q"))
256 "Program and its options to run in order to update a zip file member.
257 Options should ensure that specified directory will be put into the zip
258 file. Archive and member name will be added."
259 :type '(list (string :tag "Program")
260 (repeat :tag "Options"
261 :inline t
262 (string :format "%v")))
263 :group 'archive-zip)
265 (defcustom archive-zip-update-case
266 (if (and (not (executable-find "zip"))
267 (executable-find "pkzip"))
268 '("pkzip" "-u" "-P")
269 '("zip" "-q" "-k"))
270 "Program and its options to run in order to update a case fiddled zip member.
271 Options should ensure that specified directory will be put into the zip file.
272 Archive and member name will be added."
273 :type '(list (string :tag "Program")
274 (repeat :tag "Options"
275 :inline t
276 (string :format "%v")))
277 :group 'archive-zip)
279 (defcustom archive-zip-case-fiddle t
280 "If non-nil then zip file members may be down-cased.
281 This case fiddling will only happen for members created by a system
282 that uses caseless file names."
283 :type 'boolean
284 :group 'archive-zip)
285 ;; ------------------------------
286 ;; Zoo archive configuration
288 (defcustom archive-zoo-extract
289 '("zoo" "xpq")
290 "Program and its options to run in order to extract a zoo file member.
291 Extraction should happen to standard output. Archive and member name will
292 be added."
293 :type '(list (string :tag "Program")
294 (repeat :tag "Options"
295 :inline t
296 (string :format "%v")))
297 :group 'archive-zoo)
299 (defcustom archive-zoo-expunge
300 '("zoo" "DqPP")
301 "Program and its options to run in order to delete zoo file members.
302 Archive and member names will be added."
303 :type '(list (string :tag "Program")
304 (repeat :tag "Options"
305 :inline t
306 (string :format "%v")))
307 :group 'archive-zoo)
309 (defcustom archive-zoo-write-file-member
310 '("zoo" "a")
311 "Program and its options to run in order to update a zoo file member.
312 Archive and member name will be added."
313 :type '(list (string :tag "Program")
314 (repeat :tag "Options"
315 :inline t
316 (string :format "%v")))
317 :group 'archive-zoo)
318 ;; -------------------------------------------------------------------------
319 ;;; Section: Variables
321 (defvar archive-subtype nil "Symbol describing archive type.")
322 (defvar archive-file-list-start nil "Position of first contents line.")
323 (defvar archive-file-list-end nil "Position just after last contents line.")
324 (defvar archive-proper-file-start nil "Position of real archive's start.")
325 (defvar archive-read-only nil "Non-nil if the archive is read-only on disk.")
326 (defvar archive-local-name nil "Name of local copy of remote archive.")
327 (defvar archive-mode-map
328 (let ((map (make-keymap)))
329 (suppress-keymap map)
330 (define-key map " " 'archive-next-line)
331 (define-key map "a" 'archive-alternate-display)
332 ;;(define-key map "c" 'archive-copy)
333 (define-key map "d" 'archive-flag-deleted)
334 (define-key map "\C-d" 'archive-flag-deleted)
335 (define-key map "e" 'archive-extract)
336 (define-key map "f" 'archive-extract)
337 (define-key map "\C-m" 'archive-extract)
338 (define-key map "g" 'revert-buffer)
339 (define-key map "h" 'describe-mode)
340 (define-key map "m" 'archive-mark)
341 (define-key map "n" 'archive-next-line)
342 (define-key map "\C-n" 'archive-next-line)
343 (define-key map [down] 'archive-next-line)
344 (define-key map "o" 'archive-extract-other-window)
345 (define-key map "p" 'archive-previous-line)
346 (define-key map "q" 'quit-window)
347 (define-key map "\C-p" 'archive-previous-line)
348 (define-key map [up] 'archive-previous-line)
349 (define-key map "r" 'archive-rename-entry)
350 (define-key map "u" 'archive-unflag)
351 (define-key map "\M-\C-?" 'archive-unmark-all-files)
352 (define-key map "v" 'archive-view)
353 (define-key map "x" 'archive-expunge)
354 (define-key map "\177" 'archive-unflag-backwards)
355 (define-key map "E" 'archive-extract-other-window)
356 (define-key map "M" 'archive-chmod-entry)
357 (define-key map "G" 'archive-chgrp-entry)
358 (define-key map "O" 'archive-chown-entry)
359 ;; Let mouse-1 follow the link.
360 (define-key map [follow-link] 'mouse-face)
362 (if (fboundp 'command-remapping)
363 (progn
364 (define-key map [remap advertised-undo] 'archive-undo)
365 (define-key map [remap undo] 'archive-undo))
366 (substitute-key-definition 'advertised-undo 'archive-undo map global-map)
367 (substitute-key-definition 'undo 'archive-undo map global-map))
369 (define-key map
370 (if (featurep 'xemacs) 'button2 [mouse-2]) 'archive-extract)
372 (if (featurep 'xemacs)
373 () ; out of luck
375 (define-key map [menu-bar immediate]
376 (cons "Immediate" (make-sparse-keymap "Immediate")))
377 (define-key map [menu-bar immediate alternate]
378 '(menu-item "Alternate Display" archive-alternate-display
379 :enable (boundp (archive-name "alternate-display"))
380 :help "Toggle alternate file info display"))
381 (define-key map [menu-bar immediate view]
382 '(menu-item "View This File" archive-view
383 :help "Display file at cursor in View Mode"))
384 (define-key map [menu-bar immediate display]
385 '(menu-item "Display in Other Window" archive-display-other-window
386 :help "Display file at cursor in another window"))
387 (define-key map [menu-bar immediate find-file-other-window]
388 '(menu-item "Find in Other Window" archive-extract-other-window
389 :help "Edit file at cursor in another window"))
390 (define-key map [menu-bar immediate find-file]
391 '(menu-item "Find This File" archive-extract
392 :help "Extract file at cursor and edit it"))
394 (define-key map [menu-bar mark]
395 (cons "Mark" (make-sparse-keymap "Mark")))
396 (define-key map [menu-bar mark unmark-all]
397 '(menu-item "Unmark All" archive-unmark-all-files
398 :help "Unmark all marked files"))
399 (define-key map [menu-bar mark deletion]
400 '(menu-item "Flag" archive-flag-deleted
401 :help "Flag file at cursor for deletion"))
402 (define-key map [menu-bar mark unmark]
403 '(menu-item "Unflag" archive-unflag
404 :help "Unmark file at cursor"))
405 (define-key map [menu-bar mark mark]
406 '(menu-item "Mark" archive-mark
407 :help "Mark file at cursor"))
409 (define-key map [menu-bar operate]
410 (cons "Operate" (make-sparse-keymap "Operate")))
411 (define-key map [menu-bar operate chown]
412 '(menu-item "Change Owner..." archive-chown-entry
413 :enable (fboundp (archive-name "chown-entry"))
414 :help "Change owner of marked files"))
415 (define-key map [menu-bar operate chgrp]
416 '(menu-item "Change Group..." archive-chgrp-entry
417 :enable (fboundp (archive-name "chgrp-entry"))
418 :help "Change group ownership of marked files"))
419 (define-key map [menu-bar operate chmod]
420 '(menu-item "Change Mode..." archive-chmod-entry
421 :enable (fboundp (archive-name "chmod-entry"))
422 :help "Change mode (permissions) of marked files"))
423 (define-key map [menu-bar operate rename]
424 '(menu-item "Rename to..." archive-rename-entry
425 :enable (fboundp (archive-name "rename-entry"))
426 :help "Rename marked files"))
427 ;;(define-key map [menu-bar operate copy]
428 ;; '(menu-item "Copy to..." archive-copy))
429 (define-key map [menu-bar operate expunge]
430 '(menu-item "Expunge Marked Files" archive-expunge
431 :help "Delete all flagged files from archive"))
432 map))
433 "Local keymap for archive mode listings.")
434 (defvar archive-file-name-indent nil "Column where file names start.")
436 (defvar archive-remote nil "Non-nil if the archive is outside file system.")
437 (make-variable-buffer-local 'archive-remote)
438 (put 'archive-remote 'permanent-local t)
440 (defvar archive-member-coding-system nil "Coding-system of archive member.")
441 (make-variable-buffer-local 'archive-member-coding-system)
443 (defvar archive-alternate-display nil
444 "Non-nil when alternate information is shown.")
445 (make-variable-buffer-local 'archive-alternate-display)
446 (put 'archive-alternate-display 'permanent-local t)
448 (defvar archive-superior-buffer nil "In archive members, points to archive.")
449 (put 'archive-superior-buffer 'permanent-local t)
451 (defvar archive-subfile-mode nil "Non-nil in archive member buffers.")
452 (make-variable-buffer-local 'archive-subfile-mode)
453 (put 'archive-subfile-mode 'permanent-local t)
455 (defvar archive-file-name-coding-system nil)
456 (make-variable-buffer-local 'archive-file-name-coding-system)
457 (put 'archive-file-name-coding-system 'permanent-local t)
459 (defvar archive-files nil
460 "Vector of file descriptors.
461 Each descriptor is a vector of the form
462 [EXT-FILE-NAME INT-FILE-NAME CASE-FIDDLED MODE ...]")
463 (make-variable-buffer-local 'archive-files)
465 ;; -------------------------------------------------------------------------
466 ;;; Section: Support functions.
468 (eval-when-compile
469 (defsubst byte-after (pos)
470 "Like char-after but an eight-bit char is converted to unibyte."
471 (multibyte-char-to-unibyte (char-after pos)))
472 (defsubst insert-unibyte (&rest args)
473 "Like insert but don't make unibyte string and eight-bit char multibyte."
474 (dolist (elt args)
475 (if (integerp elt)
476 (insert (if (< elt 128) elt (decode-char 'eight-bit elt)))
477 (insert (string-to-multibyte elt)))))
480 (defsubst archive-name (suffix)
481 (intern (concat "archive-" (symbol-name archive-subtype) "-" suffix)))
483 (defun archive-l-e (str &optional len float)
484 "Convert little endian string/vector STR to integer.
485 Alternatively, STR may be a buffer position in the current buffer
486 in which case a second argument, length LEN, should be supplied.
487 FLOAT, if non-nil, means generate and return a float instead of an integer
488 \(use this for numbers that can overflow the Emacs integer)."
489 (if (stringp str)
490 (setq len (length str))
491 (setq str (buffer-substring str (+ str len))))
492 (setq str (string-as-unibyte str))
493 (let ((result 0)
494 (i 0))
495 (while (< i len)
496 (setq i (1+ i)
497 result (+ (if float (* result 256.0) (ash result 8))
498 (aref str (- len i)))))
499 result))
501 (defun archive-int-to-mode (mode)
502 "Turn an integer like 0700 (i.e., 448) into a mode string like -rwx------."
503 ;; FIXME: merge with tar-grind-file-mode.
504 (string
505 (if (zerop (logand 8192 mode))
506 (if (zerop (logand 16384 mode)) ?- ?d)
507 ?c) ; completeness
508 (if (zerop (logand 256 mode)) ?- ?r)
509 (if (zerop (logand 128 mode)) ?- ?w)
510 (if (zerop (logand 64 mode))
511 (if (zerop (logand 1024 mode)) ?- ?S)
512 (if (zerop (logand 1024 mode)) ?x ?s))
513 (if (zerop (logand 32 mode)) ?- ?r)
514 (if (zerop (logand 16 mode)) ?- ?w)
515 (if (zerop (logand 8 mode))
516 (if (zerop (logand 2048 mode)) ?- ?S)
517 (if (zerop (logand 2048 mode)) ?x ?s))
518 (if (zerop (logand 4 mode)) ?- ?r)
519 (if (zerop (logand 2 mode)) ?- ?w)
520 (if (zerop (logand 1 mode)) ?- ?x)))
522 (defun archive-calc-mode (oldmode newmode &optional error)
523 "From the integer OLDMODE and the string NEWMODE calculate a new file mode.
524 NEWMODE may be an octal number including a leading zero in which case it
525 will become the new mode.\n
526 NEWMODE may also be a relative specification like \"og-rwx\" in which case
527 OLDMODE will be modified accordingly just like chmod(2) would have done.\n
528 If optional third argument ERROR is non-nil an error will be signaled if
529 the mode is invalid. If ERROR is nil then nil will be returned."
530 (cond ((string-match "^0[0-7]*$" newmode)
531 (let ((result 0)
532 (len (length newmode))
533 (i 1))
534 (while (< i len)
535 (setq result (+ (lsh result 3) (aref newmode i) (- ?0))
536 i (1+ i)))
537 (logior (logand oldmode 65024) result)))
538 ((string-match "^\\([agou]+\\)\\([---+=]\\)\\([rwxst]+\\)$" newmode)
539 (let ((who 0)
540 (result oldmode)
541 (op (aref newmode (match-beginning 2)))
542 (bits 0)
543 (i (match-beginning 3)))
544 (while (< i (match-end 3))
545 (let ((rwx (aref newmode i)))
546 (setq bits (logior bits (cond ((= rwx ?r) 292)
547 ((= rwx ?w) 146)
548 ((= rwx ?x) 73)
549 ((= rwx ?s) 3072)
550 ((= rwx ?t) 512)))
551 i (1+ i))))
552 (while (< who (match-end 1))
553 (let* ((whoc (aref newmode who))
554 (whomask (cond ((= whoc ?a) 4095)
555 ((= whoc ?u) 1472)
556 ((= whoc ?g) 2104)
557 ((= whoc ?o) 7))))
558 (if (= op ?=)
559 (setq result (logand result (lognot whomask))))
560 (if (= op ?-)
561 (setq result (logand result (lognot (logand whomask bits))))
562 (setq result (logior result (logand whomask bits)))))
563 (setq who (1+ who)))
564 result))
566 (if error
567 (error "Invalid mode specification: %s" newmode)))))
569 (defun archive-dosdate (date)
570 "Stringify dos packed DATE record."
571 (let ((year (+ 1980 (logand (ash date -9) 127)))
572 (month (logand (ash date -5) 15))
573 (day (logand date 31)))
574 (if (or (> month 12) (< month 1))
576 (format "%2d-%s-%d"
578 (aref ["Jan" "Feb" "Mar" "Apr" "May" "Jun"
579 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"] (1- month))
580 year))))
582 (defun archive-dostime (time)
583 "Stringify dos packed TIME record."
584 (let ((hour (logand (ash time -11) 31))
585 (minute (logand (ash time -5) 63))
586 (second (* 2 (logand time 31)))) ; 2 seconds resolution
587 (format "%02d:%02d:%02d" hour minute second)))
589 (defun archive-unixdate (low high)
590 "Stringify Unix (LOW HIGH) date."
591 (let ((str (current-time-string (cons high low))))
592 (format "%s-%s-%s"
593 (substring str 8 10)
594 (substring str 4 7)
595 (substring str 20 24))))
597 (defun archive-unixtime (low high)
598 "Stringify Unix (LOW HIGH) time."
599 (let ((str (current-time-string (cons high low))))
600 (substring str 11 19)))
602 (defun archive-get-lineno ()
603 (if (>= (point) archive-file-list-start)
604 (count-lines archive-file-list-start
605 (save-excursion (beginning-of-line) (point)))
608 (defun archive-get-descr (&optional noerror)
609 "Return the descriptor vector for file at point.
610 Does not signal an error if optional argument NOERROR is non-nil."
611 (let ((no (archive-get-lineno)))
612 (if (and (>= (point) archive-file-list-start)
613 (< no (length archive-files)))
614 (let ((item (aref archive-files no)))
615 (if (vectorp item)
616 item
617 (if (not noerror)
618 (error "Entry is not a regular member of the archive"))))
619 (if (not noerror)
620 (error "Line does not describe a member of the archive")))))
621 ;; -------------------------------------------------------------------------
622 ;;; Section: the mode definition
624 ;;;###autoload
625 (defun archive-mode (&optional force)
626 "Major mode for viewing an archive file in a dired-like way.
627 You can move around using the usual cursor motion commands.
628 Letters no longer insert themselves.
629 Type `e' to pull a file out of the archive and into its own buffer;
630 or click mouse-2 on the file's line in the archive mode buffer.
632 If you edit a sub-file of this archive (as with the `e' command) and
633 save it, the contents of that buffer will be saved back into the
634 archive.
636 \\{archive-mode-map}"
637 ;; This is not interactive because you shouldn't be turning this
638 ;; mode on and off. You can corrupt things that way.
639 (if (zerop (buffer-size))
640 ;; At present we cannot create archives from scratch
641 (funcall (or (default-value 'major-mode) 'fundamental-mode))
642 (if (and (not force) archive-files) nil
643 (let* ((type (archive-find-type))
644 (typename (capitalize (symbol-name type))))
645 (kill-all-local-variables)
646 (make-local-variable 'archive-subtype)
647 (setq archive-subtype type)
649 ;; Buffer contains treated image of file before the file contents
650 (make-local-variable 'revert-buffer-function)
651 (setq revert-buffer-function 'archive-mode-revert)
652 (auto-save-mode 0)
654 ;; Remote archives are not written by a hook.
655 (if archive-remote nil
656 (add-hook 'write-contents-functions 'archive-write-file nil t))
658 (make-local-variable 'require-final-newline)
659 (setq require-final-newline nil)
660 (make-local-variable 'local-enable-local-variables)
661 (setq local-enable-local-variables nil)
663 ;; Prevent loss of data when saving the file.
664 (make-local-variable 'file-precious-flag)
665 (setq file-precious-flag t)
667 (make-local-variable 'archive-read-only)
668 ;; Archives which are inside other archives and whose
669 ;; names are invalid for this OS, can't be written.
670 (setq archive-read-only
671 (or (not (file-writable-p (buffer-file-name)))
672 (and archive-subfile-mode
673 (string-match file-name-invalid-regexp
674 (aref archive-subfile-mode 0)))))
676 ;; Should we use a local copy when accessing from outside Emacs?
677 (make-local-variable 'archive-local-name)
679 ;; An archive can contain another archive whose name is invalid
680 ;; on local filesystem. Treat such archives as remote.
681 (or archive-remote
682 (setq archive-remote
683 (or (string-match archive-remote-regexp (buffer-file-name))
684 (string-match file-name-invalid-regexp
685 (buffer-file-name)))))
687 (setq major-mode 'archive-mode)
688 (setq mode-name (concat typename "-Archive"))
689 ;; Run archive-foo-mode-hook and archive-mode-hook
690 (run-mode-hooks (archive-name "mode-hook") 'archive-mode-hook)
691 (use-local-map archive-mode-map))
693 (make-local-variable 'archive-proper-file-start)
694 (make-local-variable 'archive-file-list-start)
695 (make-local-variable 'archive-file-list-end)
696 (make-local-variable 'archive-file-name-indent)
697 (setq archive-file-name-coding-system
698 (or file-name-coding-system
699 default-file-name-coding-system
700 locale-coding-system))
701 (if (default-value 'enable-multibyte-characters)
702 (set-buffer-multibyte 'to))
703 (archive-summarize nil)
704 (setq buffer-read-only t))))
706 ;; Archive mode is suitable only for specially formatted data.
707 (put 'archive-mode 'mode-class 'special)
709 (let ((item1 '(archive-subfile-mode " Archive")))
710 (or (member item1 minor-mode-alist)
711 (setq minor-mode-alist (cons item1 minor-mode-alist))))
712 ;; -------------------------------------------------------------------------
713 (defun archive-find-type ()
714 (widen)
715 (goto-char (point-min))
716 ;; The funny [] here make it unlikely that the .elc file will be treated
717 ;; as an archive by other software.
718 (let (case-fold-search)
719 (cond ((looking-at "\\(PK00\\)?[P]K\003\004") 'zip)
720 ((looking-at "..-l[hz][0-9ds]-") 'lzh)
721 ((looking-at "....................[\334]\247\304\375") 'zoo)
722 ((and (looking-at "\C-z") ; signature too simple, IMHO
723 (string-match "\\.[aA][rR][cC]$"
724 (or buffer-file-name (buffer-name))))
725 'arc)
726 ;; This pattern modeled on the BSD/GNU+Linux `file' command.
727 ;; Have seen capital "LHA's", and file has lower case "LHa's" too.
728 ;; Note this regexp is also in archive-exe-p.
729 ((looking-at "MZ\\(.\\|\n\\)\\{34\\}LH[aA]'s SFX ") 'lzh-exe)
730 ((looking-at "Rar!") 'rar)
731 ((looking-at "!<arch>\n") 'ar)
732 ((and (looking-at "MZ")
733 (re-search-forward "Rar!" (+ (point) 100000) t))
734 'rar-exe)
735 (t (error "Buffer format not recognized")))))
736 ;; -------------------------------------------------------------------------
738 (defun archive-desummarize ()
739 (let ((inhibit-read-only t)
740 (modified (buffer-modified-p)))
741 (widen)
742 (delete-region (point-min) archive-proper-file-start)
743 (restore-buffer-modified-p modified)))
746 (defun archive-summarize (&optional shut-up)
747 "Parse the contents of the archive file in the current buffer.
748 Place a dired-like listing on the front;
749 then narrow to it, so that only that listing
750 is visible (and the real data of the buffer is hidden).
751 Optional argument SHUT-UP, if non-nil, means don't print messages
752 when parsing the archive."
753 (widen)
754 (let ((inhibit-read-only t))
755 (setq archive-proper-file-start (copy-marker (point-min) t))
756 (set (make-local-variable 'change-major-mode-hook) 'archive-desummarize)
757 (or shut-up
758 (message "Parsing archive file..."))
759 (buffer-disable-undo (current-buffer))
760 (setq archive-files (funcall (archive-name "summarize")))
761 (or shut-up
762 (message "Parsing archive file...done."))
763 (setq archive-proper-file-start (point-marker))
764 (narrow-to-region (point-min) (point))
765 (set-buffer-modified-p nil)
766 (buffer-enable-undo))
767 (goto-char archive-file-list-start)
768 (archive-next-line 0))
770 (defun archive-resummarize ()
771 "Recreate the contents listing of an archive."
772 (let ((no (archive-get-lineno)))
773 (archive-desummarize)
774 (archive-summarize t)
775 (goto-char archive-file-list-start)
776 (archive-next-line no)))
778 (defun archive-summarize-files (files)
779 "Insert a description of a list of files annotated with proper mouse face."
780 (setq archive-file-list-start (point-marker))
781 (setq archive-file-name-indent (if files (aref (car files) 1) 0))
782 ;; We don't want to do an insert for each element since that takes too
783 ;; long when the archive -- which has to be moved in memory -- is large.
784 (insert
785 (apply
786 (function concat)
787 (mapcar
788 (lambda (fil)
789 ;; Using `concat' here copies the text also, so we can add
790 ;; properties without problems.
791 (let ((text (concat (aref fil 0) "\n")))
792 (if (featurep 'xemacs)
793 () ; out of luck
794 (add-text-properties
795 (aref fil 1) (aref fil 2)
796 '(mouse-face highlight
797 help-echo "mouse-2: extract this file into a buffer")
798 text))
799 text))
800 files)))
801 (setq archive-file-list-end (point-marker)))
803 (defun archive-alternate-display ()
804 "Toggle alternative display.
805 To avoid very long lines archive mode does not show all information.
806 This function changes the set of information shown for each files."
807 (interactive)
808 (setq archive-alternate-display (not archive-alternate-display))
809 (archive-resummarize))
810 ;; -------------------------------------------------------------------------
811 ;;; Section: Local archive copy handling
813 (defun archive-unique-fname (fname dir)
814 "Make sure a file FNAME can be created uniquely in directory DIR.
816 If FNAME can be uniquely created in DIR, it is returned unaltered.
817 If FNAME is something our underlying filesystem can't grok, or if another
818 file by that name already exists in DIR, a unique new name is generated
819 using `make-temp-file', and the generated name is returned."
820 (let ((fullname (expand-file-name fname dir))
821 (alien (string-match file-name-invalid-regexp fname))
822 (tmpfile
823 (expand-file-name
824 (if (if (fboundp 'msdos-long-file-names)
825 (not (msdos-long-file-names)))
826 "am"
827 "arc-mode.")
828 dir)))
829 (if (or alien (file-exists-p fullname))
830 (progn
831 ;; Maked sure all the leading directories in
832 ;; archive-local-name exist under archive-tmpdir, so that
833 ;; the directory structure recorded in the archive is
834 ;; reconstructed in the temporary directory.
835 (make-directory (file-name-directory tmpfile) t)
836 (make-temp-file tmpfile))
837 ;; Maked sure all the leading directories in `fullname' exist
838 ;; under archive-tmpdir. This is necessary for nested archives
839 ;; (`archive-extract' sets `archive-remote' to t in case
840 ;; an archive occurs inside another archive).
841 (make-directory (file-name-directory fullname) t)
842 fullname)))
844 (defun archive-maybe-copy (archive)
845 (let ((coding-system-for-write 'no-conversion))
846 (if archive-remote
847 (let ((start (point-max))
848 ;; Sometimes ARCHIVE is invalid while its actual name, as
849 ;; recorded in its parent archive, is not. For example, an
850 ;; archive bar.zip inside another archive foo.zip gets a name
851 ;; "foo.zip:bar.zip", which is invalid on DOS/Windows.
852 ;; So use the actual name if available.
853 (archive-name
854 (or (and archive-subfile-mode (aref archive-subfile-mode 0))
855 archive)))
856 (setq archive-local-name
857 (archive-unique-fname archive-name archive-tmpdir))
858 (save-restriction
859 (widen)
860 (write-region start (point-max) archive-local-name nil 'nomessage))
861 archive-local-name)
862 (if (buffer-modified-p) (save-buffer))
863 archive)))
865 (defun archive-maybe-update (unchanged)
866 (if archive-remote
867 (let ((name archive-local-name)
868 (modified (buffer-modified-p))
869 (coding-system-for-read 'no-conversion)
870 (lno (archive-get-lineno))
871 (inhibit-read-only t))
872 (if unchanged nil
873 (setq archive-files nil)
874 (erase-buffer)
875 (insert-file-contents name)
876 (archive-mode t)
877 (goto-char archive-file-list-start)
878 (archive-next-line lno))
879 (archive-delete-local name)
880 (if (not unchanged)
881 (message
882 "Buffer `%s' must be saved for changes to take effect"
883 (buffer-name (current-buffer))))
884 (set-buffer-modified-p (or modified (not unchanged))))))
886 (defun archive-delete-local (name)
887 "Delete file NAME and its parents up to and including `archive-tmpdir'."
888 (let ((again t)
889 (top (directory-file-name (file-name-as-directory archive-tmpdir))))
890 (condition-case nil
891 (delete-file name)
892 (error nil))
893 (while again
894 (setq name (directory-file-name (file-name-directory name)))
895 (condition-case nil
896 (delete-directory name)
897 (error nil))
898 (if (string= name top) (setq again nil)))))
899 ;; -------------------------------------------------------------------------
900 ;;; Section: Member extraction
902 (defun archive-try-jka-compr ()
903 (when (and auto-compression-mode
904 (jka-compr-get-compression-info buffer-file-name))
905 (let* ((basename (file-name-nondirectory buffer-file-name))
906 (tmpname (if (string-match ":\\([^:]+\\)\\'" basename)
907 (match-string 1 basename) basename))
908 (tmpfile (make-temp-file (file-name-sans-extension tmpname)
910 (file-name-extension tmpname 'period))))
911 (unwind-protect
912 (progn
913 (let ((coding-system-for-write 'no-conversion)
914 ;; Don't re-compress this data just before decompressing it.
915 (jka-compr-inhibit t))
916 (write-region (point-min) (point-max) tmpfile nil 'quiet))
917 (erase-buffer)
918 (let ((coding-system-for-read 'no-conversion))
919 (insert-file-contents tmpfile)))
920 (delete-file tmpfile)))))
922 (defun archive-file-name-handler (op &rest args)
923 (or (eq op 'file-exists-p)
924 (let ((file-name-handler-alist nil))
925 (apply op args))))
927 (defun archive-set-buffer-as-visiting-file (filename)
928 "Set the current buffer as if it were visiting FILENAME."
929 (save-excursion
930 (goto-char (point-min))
931 (let ((buffer-undo-list t)
932 (coding
933 (or coding-system-for-read
934 (and set-auto-coding-function
935 (save-excursion
936 (funcall set-auto-coding-function
937 filename (- (point-max) (point-min)))))
938 ;; dos-w32.el defines the function
939 ;; find-buffer-file-type-coding-system for DOS/Windows
940 ;; systems which preserves the coding-system of existing files.
941 ;; (That function is called via file-coding-system-alist.)
942 ;; Here, we want it to act as if the extracted file existed.
943 ;; The following let-binding of file-name-handler-alist forces
944 ;; find-file-not-found-set-buffer-file-coding-system to ignore
945 ;; the file's name (see dos-w32.el).
946 (let ((file-name-handler-alist
947 '(("" . archive-file-name-handler))))
948 (car (find-operation-coding-system
949 'insert-file-contents
950 (cons filename (current-buffer)) t))))))
951 (unless (or coding-system-for-read
952 enable-multibyte-characters)
953 (setq coding
954 (coding-system-change-text-conversion coding 'raw-text)))
955 (unless (memq coding '(nil no-conversion))
956 (decode-coding-region (point-min) (point-max) coding)
957 (setq last-coding-system-used coding))
958 (set-buffer-modified-p nil)
959 (kill-local-variable 'buffer-file-coding-system)
960 (after-insert-file-set-coding (- (point-max) (point-min))))))
962 (define-obsolete-function-alias 'archive-mouse-extract 'archive-extract "22.1")
964 (defun archive-extract (&optional other-window-p event)
965 "In archive mode, extract this entry of the archive into its own buffer."
966 (interactive (list nil last-input-event))
967 (if event (posn-set-point (event-end event)))
968 (let* ((view-p (eq other-window-p 'view))
969 (descr (archive-get-descr))
970 (ename (aref descr 0))
971 (iname (aref descr 1))
972 (archive-buffer (current-buffer))
973 (arcdir default-directory)
974 (archive (buffer-file-name))
975 (arcname (file-name-nondirectory archive))
976 (bufname (concat (file-name-nondirectory iname) " (" arcname ")"))
977 (extractor (archive-name "extract"))
978 ;; Members with file names which aren't valid for the
979 ;; underlying filesystem, are treated as read-only.
980 (read-only-p (or archive-read-only
981 view-p
982 (string-match file-name-invalid-regexp ename)))
983 (arcfilename (expand-file-name (concat arcname ":" iname)))
984 (buffer (get-buffer bufname))
985 (just-created nil)
986 (file-name-coding archive-file-name-coding-system))
987 (if (and buffer
988 (string= (buffer-file-name buffer) arcfilename))
990 (setq archive (archive-maybe-copy archive))
991 (setq bufname (generate-new-buffer-name bufname))
992 (setq buffer (get-buffer-create bufname))
993 (setq just-created t)
994 (with-current-buffer buffer
995 (setq buffer-file-name arcfilename)
996 (setq buffer-file-truename
997 (abbreviate-file-name buffer-file-name))
998 ;; Set the default-directory to the dir of the superior buffer.
999 (setq default-directory arcdir)
1000 (make-local-variable 'archive-superior-buffer)
1001 (setq archive-superior-buffer archive-buffer)
1002 (add-hook 'write-file-functions 'archive-write-file-member nil t)
1003 (setq archive-subfile-mode descr)
1004 (setq archive-file-name-coding-system file-name-coding)
1005 (if (and
1006 (null
1007 (let (;; We may have to encode file name arguement for
1008 ;; external programs.
1009 (coding-system-for-write
1010 (and enable-multibyte-characters
1011 archive-file-name-coding-system))
1012 ;; We read an archive member by no-conversion at
1013 ;; first, then decode appropriately by calling
1014 ;; archive-set-buffer-as-visiting-file later.
1015 (coding-system-for-read 'no-conversion))
1016 (condition-case err
1017 (if (fboundp extractor)
1018 (funcall extractor archive ename)
1019 (archive-*-extract archive ename
1020 (symbol-value extractor)))
1021 (error
1022 (ding (message "%s" (error-message-string err)))
1023 nil))))
1024 just-created)
1025 (progn
1026 (set-buffer-modified-p nil)
1027 (kill-buffer buffer))
1028 (archive-try-jka-compr) ;Pretty ugly hack :-(
1029 (archive-set-buffer-as-visiting-file ename)
1030 (goto-char (point-min))
1031 (rename-buffer bufname)
1032 (setq buffer-read-only read-only-p)
1033 (setq buffer-undo-list nil)
1034 (set-buffer-modified-p nil)
1035 (setq buffer-saved-size (buffer-size))
1036 (normal-mode)
1037 ;; Just in case an archive occurs inside another archive.
1038 (when (derived-mode-p 'archive-mode)
1039 (setq archive-remote t)
1040 (if read-only-p (setq archive-read-only t))
1041 ;; We will write out the archive ourselves if it is
1042 ;; part of another archive.
1043 (remove-hook 'write-contents-functions 'archive-write-file t))
1044 (run-hooks 'archive-extract-hooks)
1045 (if archive-read-only
1046 (message "Note: altering this archive is not implemented."))))
1047 (archive-maybe-update t))
1048 (or (not (buffer-name buffer))
1049 (cond
1050 (view-p (view-buffer
1051 buffer (and just-created 'kill-buffer-if-not-modified)))
1052 ((eq other-window-p 'display) (display-buffer buffer))
1053 (other-window-p (switch-to-buffer-other-window buffer))
1054 (t (switch-to-buffer buffer))))))
1056 (defun archive-*-extract (archive name command)
1057 (let* ((default-directory (file-name-as-directory archive-tmpdir))
1058 (tmpfile (expand-file-name (file-name-nondirectory name)
1059 default-directory))
1060 exit-status success)
1061 (make-directory (directory-file-name default-directory) t)
1062 (setq exit-status
1063 (apply 'call-process
1064 (car command)
1068 (append (cdr command) (list archive name))))
1069 (cond ((and (numberp exit-status) (zerop exit-status))
1070 (if (not (file-exists-p tmpfile))
1071 (ding (message "`%s': no such file or directory" tmpfile))
1072 (insert-file-contents tmpfile)
1073 (setq success t)))
1074 ((numberp exit-status)
1075 (ding
1076 (message "`%s' exited with status %d" (car command) exit-status)))
1077 ((stringp exit-status)
1078 (ding (message "`%s' aborted: %s" (car command) exit-status)))
1080 (ding (message "`%s' failed" (car command)))))
1081 (archive-delete-local tmpfile)
1082 success))
1084 (defun archive-extract-by-stdout (archive name command)
1085 (apply 'call-process
1086 (car command)
1090 (append (cdr command) (list archive name))))
1092 (defun archive-extract-other-window ()
1093 "In archive mode, find this member in another window."
1094 (interactive)
1095 (archive-extract t))
1097 (defun archive-display-other-window ()
1098 "In archive mode, display this member in another window."
1099 (interactive)
1100 (archive-extract 'display))
1102 (defun archive-view ()
1103 "In archive mode, view the member on this line."
1104 (interactive)
1105 (archive-extract 'view))
1107 (defun archive-add-new-member (arcbuf name)
1108 "Add current buffer to the archive in ARCBUF naming it NAME."
1109 (interactive
1110 (list (get-buffer
1111 (read-buffer "Buffer containing archive: "
1112 ;; Find first archive buffer and suggest that
1113 (let ((bufs (buffer-list)))
1114 (while (and bufs
1115 (not (with-current-buffer (car bufs)
1116 (derived-mode-p 'archive-mode))))
1117 (setq bufs (cdr bufs)))
1118 (if bufs
1119 (car bufs)
1120 (error "There are no archive buffers")))
1122 (read-string "File name in archive: "
1123 (if buffer-file-name
1124 (file-name-nondirectory buffer-file-name)
1125 ""))))
1126 (with-current-buffer arcbuf
1127 (or (derived-mode-p 'archive-mode)
1128 (error "Buffer is not an archive buffer"))
1129 (if archive-read-only
1130 (error "Archive is read-only")))
1131 (if (eq arcbuf (current-buffer))
1132 (error "An archive buffer cannot be added to itself"))
1133 (if (string= name "")
1134 (error "Archive members may not be given empty names"))
1135 (let ((func (with-current-buffer arcbuf
1136 (archive-name "add-new-member")))
1137 (membuf (current-buffer)))
1138 (if (fboundp func)
1139 (with-current-buffer arcbuf
1140 (funcall func buffer-file-name membuf name))
1141 (error "Adding a new member is not supported for this archive type"))))
1142 ;; -------------------------------------------------------------------------
1143 ;;; Section: IO stuff
1145 (defun archive-write-file-member ()
1146 (save-excursion
1147 (save-restriction
1148 (message "Updating archive...")
1149 (widen)
1150 (let ((writer (with-current-buffer archive-superior-buffer
1151 (archive-name "write-file-member")))
1152 (archive (with-current-buffer archive-superior-buffer
1153 (archive-maybe-copy (buffer-file-name)))))
1154 (if (fboundp writer)
1155 (funcall writer archive archive-subfile-mode)
1156 (archive-*-write-file-member archive
1157 archive-subfile-mode
1158 (symbol-value writer)))
1159 (set-buffer-modified-p nil)
1160 (message "Updating archive...done"))
1161 (set-buffer archive-superior-buffer)
1162 (if (not archive-remote) (revert-buffer) (archive-maybe-update nil))))
1163 ;; Restore the value of last-coding-system-used, so that basic-save-buffer
1164 ;; won't reset the coding-system of this archive member.
1165 (if (local-variable-p 'archive-member-coding-system)
1166 (setq last-coding-system-used archive-member-coding-system))
1169 (defun archive-*-write-file-member (archive descr command)
1170 (let* ((ename (aref descr 0))
1171 (tmpfile (expand-file-name ename archive-tmpdir))
1172 (top (directory-file-name (file-name-as-directory archive-tmpdir)))
1173 (default-directory (file-name-as-directory top)))
1174 (unwind-protect
1175 (progn
1176 (make-directory (file-name-directory tmpfile) t)
1177 ;; If the member is itself an archive, write it without
1178 ;; the dired-like listing we created.
1179 (if (eq major-mode 'archive-mode)
1180 (archive-write-file tmpfile)
1181 (write-region nil nil tmpfile nil 'nomessage))
1182 ;; basic-save-buffer needs last-coding-system-used to have
1183 ;; the value used to write the file, so save it before any
1184 ;; further processing clobbers it (we restore it in
1185 ;; archive-write-file-member, above).
1186 (setq archive-member-coding-system last-coding-system-used)
1187 (if (aref descr 3)
1188 ;; Set the file modes, but make sure we can read it.
1189 (set-file-modes tmpfile (logior ?\400 (aref descr 3))))
1190 (setq ename
1191 (encode-coding-string ename archive-file-name-coding-system))
1192 (let* ((coding-system-for-write 'no-conversion)
1193 (exitcode (apply 'call-process
1194 (car command)
1198 (append (cdr command)
1199 (list archive ename)))))
1200 (or (zerop exitcode)
1201 (error "Updating was unsuccessful (%S)" exitcode))))
1202 (archive-delete-local tmpfile))))
1204 (defun archive-write-file (&optional file)
1205 (save-excursion
1206 (let ((coding-system-for-write 'no-conversion))
1207 (write-region archive-proper-file-start (point-max)
1208 (or file buffer-file-name) nil t)
1209 (set-buffer-modified-p nil))
1211 ;; -------------------------------------------------------------------------
1212 ;;; Section: Marking and unmarking.
1214 (defun archive-flag-deleted (p &optional type)
1215 "In archive mode, mark this member to be deleted from the archive.
1216 With a prefix argument, mark that many files."
1217 (interactive "p")
1218 (or type (setq type ?D))
1219 (beginning-of-line)
1220 (let ((sign (if (>= p 0) +1 -1))
1221 (modified (buffer-modified-p))
1222 (inhibit-read-only t))
1223 (while (not (zerop p))
1224 (if (archive-get-descr t)
1225 (progn
1226 (delete-char 1)
1227 (insert type)))
1228 (forward-line sign)
1229 (setq p (- p sign)))
1230 (restore-buffer-modified-p modified))
1231 (archive-next-line 0))
1233 (defun archive-unflag (p)
1234 "In archive mode, un-mark this member if it is marked to be deleted.
1235 With a prefix argument, un-mark that many files forward."
1236 (interactive "p")
1237 (archive-flag-deleted p ?\s))
1239 (defun archive-unflag-backwards (p)
1240 "In archive mode, un-mark this member if it is marked to be deleted.
1241 With a prefix argument, un-mark that many members backward."
1242 (interactive "p")
1243 (archive-flag-deleted (- p) ?\s))
1245 (defun archive-unmark-all-files ()
1246 "Remove all marks."
1247 (interactive)
1248 (let ((modified (buffer-modified-p))
1249 (inhibit-read-only t))
1250 (save-excursion
1251 (goto-char archive-file-list-start)
1252 (while (< (point) archive-file-list-end)
1253 (or (= (following-char) ?\s)
1254 (progn (delete-char 1) (insert ?\s)))
1255 (forward-line 1)))
1256 (restore-buffer-modified-p modified)))
1258 (defun archive-mark (p)
1259 "In archive mode, mark this member for group operations.
1260 With a prefix argument, mark that many members.
1261 Use \\[archive-unmark-all-files] to remove all marks."
1262 (interactive "p")
1263 (archive-flag-deleted p ?*))
1265 (defun archive-get-marked (mark &optional default)
1266 (let (files)
1267 (save-excursion
1268 (goto-char archive-file-list-start)
1269 (while (< (point) archive-file-list-end)
1270 (if (= (following-char) mark)
1271 (setq files (cons (archive-get-descr) files)))
1272 (forward-line 1)))
1273 (or (nreverse files)
1274 (and default
1275 (list (archive-get-descr))))))
1276 ;; -------------------------------------------------------------------------
1277 ;;; Section: Operate
1279 (defun archive-next-line (p)
1280 (interactive "p")
1281 (forward-line p)
1282 (or (eobp)
1283 (forward-char archive-file-name-indent)))
1285 (defun archive-previous-line (p)
1286 (interactive "p")
1287 (archive-next-line (- p)))
1289 (defun archive-chmod-entry (new-mode)
1290 "Change the protection bits associated with all marked or this member.
1291 The new protection bits can either be specified as an octal number or
1292 as a relative change like \"g+rw\" as for chmod(2)."
1293 (interactive "sNew mode (octal or relative): ")
1294 (if archive-read-only (error "Archive is read-only"))
1295 (let ((func (archive-name "chmod-entry")))
1296 (if (fboundp func)
1297 (progn
1298 (funcall func new-mode (archive-get-marked ?* t))
1299 (archive-resummarize))
1300 (error "Setting mode bits is not supported for this archive type"))))
1302 (defun archive-chown-entry (new-uid)
1303 "Change the owner of all marked or this member."
1304 (interactive "nNew uid: ")
1305 (if archive-read-only (error "Archive is read-only"))
1306 (let ((func (archive-name "chown-entry")))
1307 (if (fboundp func)
1308 (progn
1309 (funcall func new-uid (archive-get-marked ?* t))
1310 (archive-resummarize))
1311 (error "Setting owner is not supported for this archive type"))))
1313 (defun archive-chgrp-entry (new-gid)
1314 "Change the group of all marked or this member."
1315 (interactive "nNew gid: ")
1316 (if archive-read-only (error "Archive is read-only"))
1317 (let ((func (archive-name "chgrp-entry")))
1318 (if (fboundp func)
1319 (progn
1320 (funcall func new-gid (archive-get-marked ?* t))
1321 (archive-resummarize))
1322 (error "Setting group is not supported for this archive type"))))
1324 (defun archive-expunge ()
1325 "Do the flagged deletions."
1326 (interactive)
1327 (let (files)
1328 (save-excursion
1329 (goto-char archive-file-list-start)
1330 (while (< (point) archive-file-list-end)
1331 (if (= (following-char) ?D)
1332 (setq files (cons (aref (archive-get-descr) 0) files)))
1333 (forward-line 1)))
1334 (setq files (nreverse files))
1335 (and files
1336 (or (not archive-read-only)
1337 (error "Archive is read-only"))
1338 (or (yes-or-no-p (format "Really delete %d member%s? "
1339 (length files)
1340 (if (null (cdr files)) "" "s")))
1341 (error "Operation aborted"))
1342 (let ((archive (archive-maybe-copy (buffer-file-name)))
1343 (expunger (archive-name "expunge")))
1344 (if (fboundp expunger)
1345 (funcall expunger archive files)
1346 (archive-*-expunge archive files (symbol-value expunger)))
1347 (archive-maybe-update nil)
1348 (if archive-remote
1349 (archive-resummarize)
1350 (revert-buffer))))))
1352 (defun archive-*-expunge (archive files command)
1353 (apply 'call-process
1354 (car command)
1358 (append (cdr command) (cons archive files))))
1360 (defun archive-rename-entry (newname)
1361 "Change the name associated with this entry in the archive file."
1362 (interactive "sNew name: ")
1363 (if archive-read-only (error "Archive is read-only"))
1364 (if (string= newname "")
1365 (error "Archive members may not be given empty names"))
1366 (let ((func (archive-name "rename-entry"))
1367 (descr (archive-get-descr)))
1368 (if (fboundp func)
1369 (progn
1370 (funcall func
1371 (encode-coding-string newname
1372 archive-file-name-coding-system)
1373 descr)
1374 (archive-resummarize))
1375 (error "Renaming is not supported for this archive type"))))
1377 ;; Revert the buffer and recompute the dired-like listing.
1378 (defun archive-mode-revert (&optional no-auto-save no-confirm)
1379 (let ((no (archive-get-lineno)))
1380 (setq archive-files nil)
1381 (let ((revert-buffer-function nil)
1382 (coding-system-for-read 'no-conversion))
1383 (revert-buffer t t))
1384 (archive-mode)
1385 (goto-char archive-file-list-start)
1386 (archive-next-line no)))
1388 (defun archive-undo ()
1389 "Undo in an archive buffer.
1390 This doesn't recover lost files, it just undoes changes in the buffer itself."
1391 (interactive)
1392 (let ((inhibit-read-only t))
1393 (undo)))
1394 ;; -------------------------------------------------------------------------
1395 ;;; Section: Arc Archives
1397 (defun archive-arc-summarize ()
1398 (let ((p 1)
1399 (totalsize 0)
1400 (maxlen 8)
1401 files
1402 visual)
1403 (while (and (< (+ p 29) (point-max))
1404 (= (byte-after p) ?\C-z)
1405 (> (byte-after (1+ p)) 0))
1406 (let* ((namefld (buffer-substring (+ p 2) (+ p 2 13)))
1407 (fnlen (or (string-match "\0" namefld) 13))
1408 (efnname (decode-coding-string (substring namefld 0 fnlen)
1409 archive-file-name-coding-system))
1410 ;; Convert to float to avoid overflow for very large files.
1411 (csize (archive-l-e (+ p 15) 4 'float))
1412 (moddate (archive-l-e (+ p 19) 2))
1413 (modtime (archive-l-e (+ p 21) 2))
1414 (ucsize (archive-l-e (+ p 25) 4 'float))
1415 (fiddle (string= efnname (upcase efnname)))
1416 (ifnname (if fiddle (downcase efnname) efnname))
1417 (text (format " %8.0f %-11s %-8s %s"
1418 ucsize
1419 (archive-dosdate moddate)
1420 (archive-dostime modtime)
1421 ifnname)))
1422 (setq maxlen (max maxlen fnlen)
1423 totalsize (+ totalsize ucsize)
1424 visual (cons (vector text
1425 (- (length text) (length ifnname))
1426 (length text))
1427 visual)
1428 files (cons (vector efnname ifnname fiddle nil (1- p))
1429 files)
1430 ;; p needs to stay an integer, since we use it in char-after
1431 ;; above. Passing through `round' limits the compressed size
1432 ;; to most-positive-fixnum, but if the compressed size exceeds
1433 ;; that, we cannot visit the archive anyway.
1434 p (+ p 29 (round csize)))))
1435 (goto-char (point-min))
1436 (let ((dash (concat "- -------- ----------- -------- "
1437 (make-string maxlen ?-)
1438 "\n")))
1439 (insert "M Length Date Time File\n"
1440 dash)
1441 (archive-summarize-files (nreverse visual))
1442 (insert dash
1443 (format " %8.0f %d file%s"
1444 totalsize
1445 (length files)
1446 (if (= 1 (length files)) "" "s"))
1447 "\n"))
1448 (apply 'vector (nreverse files))))
1450 (defun archive-arc-rename-entry (newname descr)
1451 (if (string-match "[:\\\\/]" newname)
1452 (error "File names in arc files must not contain a directory component"))
1453 (if (> (length newname) 12)
1454 (error "File names in arc files are limited to 12 characters"))
1455 (let ((name (concat newname (substring "\0\0\0\0\0\0\0\0\0\0\0\0\0"
1456 (length newname))))
1457 (inhibit-read-only t))
1458 (save-restriction
1459 (save-excursion
1460 (widen)
1461 (goto-char (+ archive-proper-file-start (aref descr 4) 2))
1462 (delete-char 13)
1463 (insert-unibyte name)))))
1464 ;; -------------------------------------------------------------------------
1465 ;;; Section: Lzh Archives
1467 (defun archive-lzh-summarize (&optional start)
1468 (let ((p (or start 1)) ;; 1 for .lzh, something further on for .exe
1469 (totalsize 0)
1470 (maxlen 8)
1471 files
1472 visual)
1473 (while (progn (goto-char p) ;beginning of a base header.
1474 (looking-at "\\(.\\|\n\\)\\(.\\|\n\\)-l[hz][0-9ds]-"))
1475 (let* ((hsize (byte-after p)) ;size of the base header (level 0 and 1)
1476 ;; Convert to float to avoid overflow for very large files.
1477 (csize (archive-l-e (+ p 7) 4 'float)) ;size of a compressed file to follow (level 0 and 2),
1478 ;size of extended headers + the compressed file to follow (level 1).
1479 (ucsize (archive-l-e (+ p 11) 4 'float)) ;size of an uncompressed file.
1480 (time1 (archive-l-e (+ p 15) 2)) ;date/time (MSDOS format in level 0, 1 headers
1481 (time2 (archive-l-e (+ p 17) 2)) ;and UNIX format in level 2 header.)
1482 (hdrlvl (byte-after (+ p 20))) ;header level
1483 thsize ;total header size (base + extensions)
1484 fnlen efnname osid fiddle ifnname width p2
1485 neh ;beginning of next extension header (level 1 and 2)
1486 mode modestr uid gid text dir prname
1487 gname uname modtime moddate)
1488 (if (= hdrlvl 3) (error "can't handle lzh level 3 header type"))
1489 (when (or (= hdrlvl 0) (= hdrlvl 1))
1490 (setq fnlen (byte-after (+ p 21))) ;filename length
1491 (setq efnname (let ((str (buffer-substring (+ p 22) (+ p 22 fnlen)))) ;filename from offset 22
1492 (decode-coding-string
1493 str archive-file-name-coding-system)))
1494 (setq p2 (+ p 22 fnlen))) ;
1495 (if (= hdrlvl 1)
1496 (setq neh (+ p2 3)) ;specific to level 1 header
1497 (if (= hdrlvl 2)
1498 (setq neh (+ p 24)))) ;specific to level 2 header
1499 (if neh ;if level 1 or 2 we expect extension headers to follow
1500 (let* ((ehsize (archive-l-e neh 2)) ;size of the extension header
1501 (etype (byte-after (+ neh 2)))) ;extension type
1502 (while (not (= ehsize 0))
1503 (cond
1504 ((= etype 1) ;file name
1505 (let ((i (+ neh 3)))
1506 (while (< i (+ neh ehsize))
1507 (setq efnname (concat efnname (char-to-string (byte-after i))))
1508 (setq i (1+ i)))))
1509 ((= etype 2) ;directory name
1510 (let ((i (+ neh 3)))
1511 (while (< i (+ neh ehsize))
1512 (setq dir (concat dir
1513 (if (= (byte-after i)
1514 255)
1516 (char-to-string
1517 (char-after i)))))
1518 (setq i (1+ i)))))
1519 ((= etype 80) ;Unix file permission
1520 (setq mode (archive-l-e (+ neh 3) 2)))
1521 ((= etype 81) ;UNIX file group/user ID
1522 (progn (setq uid (archive-l-e (+ neh 3) 2))
1523 (setq gid (archive-l-e (+ neh 5) 2))))
1524 ((= etype 82) ;UNIX file group name
1525 (let ((i (+ neh 3)))
1526 (while (< i (+ neh ehsize))
1527 (setq gname (concat gname (char-to-string (char-after i))))
1528 (setq i (1+ i)))))
1529 ((= etype 83) ;UNIX file user name
1530 (let ((i (+ neh 3)))
1531 (while (< i (+ neh ehsize))
1532 (setq uname (concat uname (char-to-string (char-after i))))
1533 (setq i (1+ i)))))
1535 (setq neh (+ neh ehsize))
1536 (setq ehsize (archive-l-e neh 2))
1537 (setq etype (byte-after (+ neh 2))))
1538 ;;get total header size for level 1 and 2 headers
1539 (setq thsize (- neh p))))
1540 (if (= hdrlvl 0) ;total header size
1541 (setq thsize hsize))
1542 ;; OS ID field not present in level 0 header, use code 0 "generic"
1543 ;; in that case as per lha program header.c get_header()
1544 (setq osid (cond ((= hdrlvl 0) 0)
1545 ((= hdrlvl 1) (char-after (+ p 22 fnlen 2)))
1546 ((= hdrlvl 2) (char-after (+ p 23)))))
1547 ;; Filename fiddling must follow the lha program, otherwise the name
1548 ;; passed to "lha pq" etc won't match (which for an extract silently
1549 ;; results in no output). As of version 1.14i it goes from the OS ID,
1550 ;; - For 'M' MSDOS: msdos_to_unix_filename() downcases always, and
1551 ;; converts "\" to "/".
1552 ;; - For 0 generic: generic_to_unix_filename() downcases if there's
1553 ;; no lower case already present, and converts "\" to "/".
1554 ;; - For 'm' MacOS: macos_to_unix_filename() changes "/" to ":" and
1555 ;; ":" to "/"
1556 (setq fiddle (cond ((= ?M osid) t)
1557 ((= 0 osid) (string= efnname (upcase efnname)))))
1558 (setq ifnname (if fiddle (downcase efnname) efnname))
1559 (setq prname (if dir (concat dir ifnname) ifnname))
1560 (setq width (if prname (string-width prname) 0))
1561 (setq modestr (if mode (archive-int-to-mode mode) "??????????"))
1562 (setq moddate (if (= hdrlvl 2)
1563 (archive-unixdate time1 time2) ;level 2 header in UNIX format
1564 (archive-dosdate time2))) ;level 0 and 1 header in DOS format
1565 (setq modtime (if (= hdrlvl 2)
1566 (archive-unixtime time1 time2)
1567 (archive-dostime time1)))
1568 (setq text (if archive-alternate-display
1569 (format " %8.0f %5S %5S %s"
1570 ucsize
1571 (or uid "?")
1572 (or gid "?")
1573 ifnname)
1574 (format " %10s %8.0f %-11s %-8s %s"
1575 modestr
1576 ucsize
1577 moddate
1578 modtime
1579 prname)))
1580 (setq maxlen (max maxlen width)
1581 totalsize (+ totalsize ucsize)
1582 visual (cons (vector text
1583 (- (length text) (length prname))
1584 (length text))
1585 visual)
1586 files (cons (vector prname ifnname fiddle mode (1- p))
1587 files))
1588 (cond ((= hdrlvl 1)
1589 ;; p needs to stay an integer, since we use it in goto-char
1590 ;; above. Passing through `round' limits the compressed size
1591 ;; to most-positive-fixnum, but if the compressed size exceeds
1592 ;; that, we cannot visit the archive anyway.
1593 (setq p (+ p hsize 2 (round csize))))
1594 ((or (= hdrlvl 2) (= hdrlvl 0))
1595 (setq p (+ p thsize 2 (round csize)))))
1597 (goto-char (point-min))
1598 (let ((dash (concat (if archive-alternate-display
1599 "- -------- ----- ----- "
1600 "- ---------- -------- ----------- -------- ")
1601 (make-string maxlen ?-)
1602 "\n"))
1603 (header (if archive-alternate-display
1604 "M Length Uid Gid File\n"
1605 "M Filemode Length Date Time File\n"))
1606 (sumline (if archive-alternate-display
1607 " %8.0f %d file%s"
1608 " %8.0f %d file%s")))
1609 (insert header dash)
1610 (archive-summarize-files (nreverse visual))
1611 (insert dash
1612 (format sumline
1613 totalsize
1614 (length files)
1615 (if (= 1 (length files)) "" "s"))
1616 "\n"))
1617 (apply 'vector (nreverse files))))
1619 (defconst archive-lzh-alternate-display t)
1621 (defun archive-lzh-extract (archive name)
1622 (archive-extract-by-stdout archive name archive-lzh-extract))
1624 (defun archive-lzh-resum (p count)
1625 (let ((sum 0))
1626 (while (> count 0)
1627 (setq count (1- count)
1628 sum (+ sum (byte-after p))
1629 p (1+ p)))
1630 (logand sum 255)))
1632 (defun archive-lzh-rename-entry (newname descr)
1633 (save-restriction
1634 (save-excursion
1635 (widen)
1636 (let* ((p (+ archive-proper-file-start (aref descr 4)))
1637 (oldhsize (byte-after p))
1638 (oldfnlen (byte-after (+ p 21)))
1639 (newfnlen (length newname))
1640 (newhsize (+ oldhsize newfnlen (- oldfnlen)))
1641 (inhibit-read-only t))
1642 (if (> newhsize 255)
1643 (error "The file name is too long"))
1644 (goto-char (+ p 21))
1645 (delete-char (1+ oldfnlen))
1646 (insert-unibyte newfnlen newname)
1647 (goto-char p)
1648 (delete-char 2)
1649 (insert-unibyte newhsize (archive-lzh-resum p newhsize))))))
1651 (defun archive-lzh-ogm (newval files errtxt ofs)
1652 (save-excursion
1653 (save-restriction
1654 (widen)
1655 (dolist (fil files)
1656 (let* ((p (+ archive-proper-file-start (aref fil 4)))
1657 (hsize (byte-after p))
1658 (fnlen (byte-after (+ p 21)))
1659 (p2 (+ p 22 fnlen))
1660 (creator (if (>= (- hsize fnlen) 24) (byte-after (+ p2 2)) 0))
1661 (inhibit-read-only t))
1662 (if (= creator ?U)
1663 (progn
1664 (or (numberp newval)
1665 (setq newval (funcall newval (archive-l-e (+ p2 ofs) 2))))
1666 (goto-char (+ p2 ofs))
1667 (delete-char 2)
1668 (insert-unibyte (logand newval 255) (lsh newval -8))
1669 (goto-char (1+ p))
1670 (delete-char 1)
1671 (insert-unibyte (archive-lzh-resum (1+ p) hsize)))
1672 (message "Member %s does not have %s field"
1673 (aref fil 1) errtxt)))))))
1675 (defun archive-lzh-chown-entry (newuid files)
1676 (archive-lzh-ogm newuid files "an uid" 10))
1678 (defun archive-lzh-chgrp-entry (newgid files)
1679 (archive-lzh-ogm newgid files "a gid" 12))
1681 (defun archive-lzh-chmod-entry (newmode files)
1682 (archive-lzh-ogm
1683 ;; This should work even though newmode will be dynamically accessed.
1684 (lambda (old) (archive-calc-mode old newmode t))
1685 files "a unix-style mode" 8))
1687 ;; -------------------------------------------------------------------------
1688 ;;; Section: Lzh Self-Extracting .exe Archives
1690 ;; No support for modifying these files. It looks like the lha for unix
1691 ;; program (as of version 1.14i) can't create or retain the DOS exe part.
1692 ;; If you do an "lha a" on a .exe for instance it renames and writes to a
1693 ;; plain .lzh.
1695 (defun archive-lzh-exe-summarize ()
1696 "Summarize the contents of an LZH self-extracting exe, for `archive-mode'."
1698 ;; Skip the initial executable code part and apply archive-lzh-summarize
1699 ;; to the archive part proper. The "-lh5-" etc regexp here for the start
1700 ;; is the same as in archive-find-type.
1702 ;; The lha program (version 1.14i) does this in skip_msdos_sfx1_code() by
1703 ;; a similar scan. It looks for "..-l..-" plus for level 0 or 1 a test of
1704 ;; the header checksum, or level 2 a test of the "attribute" and size.
1706 (re-search-forward "..-l[hz][0-9ds]-" nil)
1707 (archive-lzh-summarize (match-beginning 0)))
1709 ;; `archive-lzh-extract' runs "lha pq", and that works for .exe as well as
1710 ;; .lzh files
1711 (defalias 'archive-lzh-exe-extract 'archive-lzh-extract
1712 "Extract a member from an LZH self-extracting exe, for `archive-mode'.")
1714 ;; -------------------------------------------------------------------------
1715 ;;; Section: Zip Archives
1717 (defun archive-zip-summarize ()
1718 (goto-char (- (point-max) (- 22 18)))
1719 (search-backward-regexp "[P]K\005\006")
1720 (let ((p (+ (point-min) (archive-l-e (+ (point) 16) 4)))
1721 (maxlen 8)
1722 (totalsize 0)
1723 files
1724 visual)
1725 (while (string= "PK\001\002" (buffer-substring p (+ p 4)))
1726 (let* ((creator (byte-after (+ p 5)))
1727 ;; (method (archive-l-e (+ p 10) 2))
1728 (modtime (archive-l-e (+ p 12) 2))
1729 (moddate (archive-l-e (+ p 14) 2))
1730 ;; Convert to float to avoid overflow for very large files.
1731 (ucsize (archive-l-e (+ p 24) 4 'float))
1732 (fnlen (archive-l-e (+ p 28) 2))
1733 (exlen (archive-l-e (+ p 30) 2))
1734 (fclen (archive-l-e (+ p 32) 2))
1735 (lheader (archive-l-e (+ p 42) 4))
1736 (efnname (let ((str (buffer-substring (+ p 46) (+ p 46 fnlen))))
1737 (decode-coding-string
1738 str archive-file-name-coding-system)))
1739 (isdir (and (= ucsize 0)
1740 (string= (file-name-nondirectory efnname) "")))
1741 (mode (cond ((memq creator '(2 3)) ; Unix
1742 (archive-l-e (+ p 40) 2))
1743 ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
1744 (logior ?\444
1745 (if isdir (logior 16384 ?\111) 0)
1746 (if (zerop
1747 (logand 1 (byte-after (+ p 38))))
1748 ?\222 0)))
1749 (t nil)))
1750 (modestr (if mode (archive-int-to-mode mode) "??????????"))
1751 (fiddle (and archive-zip-case-fiddle
1752 (not (not (memq creator '(0 2 4 5 9))))
1753 (string= (upcase efnname) efnname)))
1754 (ifnname (if fiddle (downcase efnname) efnname))
1755 (width (string-width ifnname))
1756 (text (format " %10s %8.0f %-11s %-8s %s"
1757 modestr
1758 ucsize
1759 (archive-dosdate moddate)
1760 (archive-dostime modtime)
1761 ifnname)))
1762 (setq maxlen (max maxlen width)
1763 totalsize (+ totalsize ucsize)
1764 visual (cons (vector text
1765 (- (length text) (length ifnname))
1766 (length text))
1767 visual)
1768 files (cons (if isdir
1770 (vector efnname ifnname fiddle mode
1771 (list (1- p) lheader)))
1772 files)
1773 p (+ p 46 fnlen exlen fclen))))
1774 (goto-char (point-min))
1775 (let ((dash (concat "- ---------- -------- ----------- -------- "
1776 (make-string maxlen ?-)
1777 "\n")))
1778 (insert "M Filemode Length Date Time File\n"
1779 dash)
1780 (archive-summarize-files (nreverse visual))
1781 (insert dash
1782 (format " %8.0f %d file%s"
1783 totalsize
1784 (length files)
1785 (if (= 1 (length files)) "" "s"))
1786 "\n"))
1787 (apply 'vector (nreverse files))))
1789 (defun archive-zip-extract (archive name)
1790 (if (member-ignore-case (car archive-zip-extract) '("pkunzip" "pkzip"))
1791 (archive-*-extract archive name archive-zip-extract)
1792 (archive-extract-by-stdout
1793 archive
1794 ;; unzip expands wildcards in NAME, so we need to quote it. But
1795 ;; not on DOS/Windows, since that fails extraction on those
1796 ;; systems, and file names with wildcards in zip archives don't
1797 ;; work there anyway.
1798 ;; FIXME: Does pkunzip need similar treatment?
1799 (if (and (not (memq system-type '(windows-nt ms-dos)))
1800 (equal (car archive-zip-extract) "unzip"))
1801 (shell-quote-argument name)
1802 name)
1803 archive-zip-extract)))
1805 (defun archive-zip-write-file-member (archive descr)
1806 (archive-*-write-file-member
1807 archive
1808 descr
1809 (if (aref descr 2) archive-zip-update-case archive-zip-update)))
1811 (defun archive-zip-chmod-entry (newmode files)
1812 (save-restriction
1813 (save-excursion
1814 (widen)
1815 (dolist (fil files)
1816 (let* ((p (+ archive-proper-file-start (car (aref fil 4))))
1817 (creator (byte-after (+ p 5)))
1818 (oldmode (aref fil 3))
1819 (newval (archive-calc-mode oldmode newmode t))
1820 (inhibit-read-only t))
1821 (cond ((memq creator '(2 3)) ; Unix
1822 (goto-char (+ p 40))
1823 (delete-char 2)
1824 (insert-unibyte (logand newval 255) (lsh newval -8)))
1825 ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
1826 (goto-char (+ p 38))
1827 (insert-unibyte (logior (logand (byte-after (point)) 254)
1828 (logand (logxor 1 (lsh newval -7)) 1)))
1829 (delete-char 1))
1830 (t (message "Don't know how to change mode for this member"))))
1831 ))))
1832 ;; -------------------------------------------------------------------------
1833 ;;; Section: Zoo Archives
1835 (defun archive-zoo-summarize ()
1836 (let ((p (1+ (archive-l-e 25 4)))
1837 (maxlen 8)
1838 (totalsize 0)
1839 files
1840 visual)
1841 (while (and (string= "\334\247\304\375" (buffer-substring p (+ p 4)))
1842 (> (archive-l-e (+ p 6) 4) 0))
1843 (let* ((next (1+ (archive-l-e (+ p 6) 4)))
1844 (moddate (archive-l-e (+ p 14) 2))
1845 (modtime (archive-l-e (+ p 16) 2))
1846 ;; Convert to float to avoid overflow for very large files.
1847 (ucsize (archive-l-e (+ p 20) 4 'float))
1848 (namefld (buffer-substring (+ p 38) (+ p 38 13)))
1849 (dirtype (byte-after (+ p 4)))
1850 (lfnlen (if (= dirtype 2) (byte-after (+ p 56)) 0))
1851 (ldirlen (if (= dirtype 2) (byte-after (+ p 57)) 0))
1852 (fnlen (or (string-match "\0" namefld) 13))
1853 (efnname (let ((str
1854 (concat
1855 (if (> ldirlen 0)
1856 (concat (buffer-substring
1857 (+ p 58 lfnlen)
1858 (+ p 58 lfnlen ldirlen -1))
1859 "/")
1861 (if (> lfnlen 0)
1862 (buffer-substring (+ p 58)
1863 (+ p 58 lfnlen -1))
1864 (substring namefld 0 fnlen)))))
1865 (decode-coding-string
1866 str archive-file-name-coding-system)))
1867 (fiddle (and (= lfnlen 0) (string= efnname (upcase efnname))))
1868 (ifnname (if fiddle (downcase efnname) efnname))
1869 (width (string-width ifnname))
1870 (text (format " %8.0f %-11s %-8s %s"
1871 ucsize
1872 (archive-dosdate moddate)
1873 (archive-dostime modtime)
1874 ifnname)))
1875 (setq maxlen (max maxlen width)
1876 totalsize (+ totalsize ucsize)
1877 visual (cons (vector text
1878 (- (length text) (length ifnname))
1879 (length text))
1880 visual)
1881 files (cons (vector efnname ifnname fiddle nil (1- p))
1882 files)
1883 p next)))
1884 (goto-char (point-min))
1885 (let ((dash (concat "- -------- ----------- -------- "
1886 (make-string maxlen ?-)
1887 "\n")))
1888 (insert "M Length Date Time File\n"
1889 dash)
1890 (archive-summarize-files (nreverse visual))
1891 (insert dash
1892 (format " %8.0f %d file%s"
1893 totalsize
1894 (length files)
1895 (if (= 1 (length files)) "" "s"))
1896 "\n"))
1897 (apply 'vector (nreverse files))))
1899 (defun archive-zoo-extract (archive name)
1900 (archive-extract-by-stdout archive name archive-zoo-extract))
1902 ;; -------------------------------------------------------------------------
1903 ;;; Section: Rar Archives
1905 (defun archive-rar-summarize (&optional file)
1906 ;; File is used internally for `archive-rar-exe-summarize'.
1907 (unless file (setq file buffer-file-name))
1908 (let* ((copy (file-local-copy file))
1909 (maxname 10)
1910 (maxsize 5)
1911 (files ()))
1912 (with-temp-buffer
1913 (call-process "unrar-free" nil t nil "--list" (or file copy))
1914 (if copy (delete-file copy))
1915 (goto-char (point-min))
1916 (re-search-forward "^-+\n")
1917 (while (looking-at (concat " \\(.*\\)\n" ;Name.
1918 ;; Size ; Packed.
1919 " +\\([0-9]+\\) +[0-9]+"
1920 ;; Ratio ; Date'
1921 " +\\([0-9%]+\\) +\\([-0-9]+\\)"
1922 ;; Time ; Attr.
1923 " +\\([0-9:]+\\) +[^ \n]\\{6,10\\}"
1924 ;; CRC; Meth ; Var.
1925 " +[0-9A-F]+ +[^ \n]+ +[0-9.]+\n"))
1926 (goto-char (match-end 0))
1927 (let ((name (match-string 1))
1928 (size (match-string 2)))
1929 (if (> (length name) maxname) (setq maxname (length name)))
1930 (if (> (length size) maxsize) (setq maxsize (length size)))
1931 (push (vector name name nil nil
1932 ;; Size, Ratio.
1933 size (match-string 3)
1934 ;; Date, Time.
1935 (match-string 4) (match-string 5))
1936 files))))
1937 (setq files (nreverse files))
1938 (goto-char (point-min))
1939 (let* ((format (format " %%s %%s %%%ds %%5s %%s" maxsize))
1940 (sep (format format "--------" "-----" (make-string maxsize ?-)
1941 "-----" ""))
1942 (column (length sep)))
1943 (insert (format format " Date " "Time " "Size " "Ratio" " Filename") "\n")
1944 (insert sep (make-string maxname ?-) "\n")
1945 (archive-summarize-files (mapcar (lambda (desc)
1946 (let ((text
1947 (format format
1948 (aref desc 6)
1949 (aref desc 7)
1950 (aref desc 4)
1951 (aref desc 5)
1952 (aref desc 1))))
1953 (vector text
1954 column
1955 (length text))))
1956 files))
1957 (insert sep (make-string maxname ?-) "\n")
1958 (apply 'vector files))))
1960 (defun archive-rar-extract (archive name)
1961 ;; unrar-free seems to have no way to extract to stdout or even to a file.
1962 (if (file-name-absolute-p name)
1963 ;; The code below assumes the name is relative and may do undesirable
1964 ;; things otherwise.
1965 (error "Can't extract files with non-relative names")
1966 (let ((dest (make-temp-file "arc-rar" 'dir)))
1967 (unwind-protect
1968 (progn
1969 (call-process "unrar-free" nil nil nil
1970 "--extract" archive name dest)
1971 (insert-file-contents-literally (expand-file-name name dest)))
1972 (delete-file (expand-file-name name dest))
1973 (while (file-name-directory name)
1974 (setq name (directory-file-name (file-name-directory name)))
1975 (delete-directory (expand-file-name name dest)))
1976 (delete-directory dest)))))
1978 ;;; Section: Rar self-extracting .exe archives.
1980 (defun archive-rar-exe-summarize ()
1981 (let ((tmpfile (make-temp-file "rarexe")))
1982 (unwind-protect
1983 (progn
1984 (goto-char (point-min))
1985 (re-search-forward "Rar!")
1986 (write-region (match-beginning 0) (point-max) tmpfile)
1987 (archive-rar-summarize tmpfile))
1988 (delete-file tmpfile))))
1990 (defun archive-rar-exe-extract (archive name)
1991 (let* ((tmpfile (make-temp-file "rarexe"))
1992 (buf (find-buffer-visiting archive))
1993 (tmpbuf (unless buf (generate-new-buffer " *rar-exe*"))))
1994 (unwind-protect
1995 (progn
1996 (with-current-buffer (or buf tmpbuf)
1997 (save-excursion
1998 (save-restriction
1999 (if buf
2000 ;; point-max unwidened is assumed to be the end of the
2001 ;; summary text and the beginning of the actual file data.
2002 (progn (goto-char (point-max)) (widen))
2003 (insert-file-contents-literally archive)
2004 (goto-char (point-min)))
2005 (re-search-forward "Rar!")
2006 (write-region (match-beginning 0) (point-max) tmpfile))))
2007 (archive-rar-extract tmpfile name))
2008 (if tmpbuf (kill-buffer tmpbuf))
2009 (delete-file tmpfile))))
2012 ;;; Section `ar' archives.
2014 ;; TODO: we currently only handle the basic format of ar archives,
2015 ;; not the GNU nor the BSD extensions. As it turns out, this is sufficient
2016 ;; for .deb packages.
2018 (autoload 'tar-grind-file-mode "tar-mode")
2020 (defconst archive-ar-file-header-re
2021 "\\(.\\{16\\}\\)\\([ 0-9]\\{12\\}\\)\\([ 0-9]\\{6\\}\\)\\([ 0-9]\\{6\\}\\)\\([ 0-7]\\{8\\}\\)\\([ 0-9]\\{10\\}\\)`\n")
2023 (defun archive-ar-summarize ()
2024 ;; File is used internally for `archive-rar-exe-summarize'.
2025 (let* ((maxname 10)
2026 (maxtime 16)
2027 (maxuser 5)
2028 (maxgroup 5)
2029 (maxmode 8)
2030 (maxsize 5)
2031 (files ()))
2032 (goto-char (point-min))
2033 (search-forward "!<arch>\n")
2034 (while (looking-at archive-ar-file-header-re)
2035 (let ((name (match-string 1))
2036 extname
2037 ;; Emacs will automatically use float here because those
2038 ;; timestamps don't fit in our ints.
2039 (time (string-to-number (match-string 2)))
2040 (user (match-string 3))
2041 (group (match-string 4))
2042 (mode (string-to-number (match-string 5) 8))
2043 (size (string-to-number (match-string 6))))
2044 ;; Move to the beginning of the data.
2045 (goto-char (match-end 0))
2046 (setq time
2047 (format-time-string
2048 "%Y-%m-%d %H:%M"
2049 (let ((high (truncate (/ time 65536))))
2050 (list high (truncate (- time (* 65536.0 high)))))))
2051 (setq extname
2052 (cond ((equal name "// ")
2053 (propertize ".<ExtNamesTable>." 'face 'italic))
2054 ((equal name "/ ")
2055 (propertize ".<LookupTable>." 'face 'italic))
2056 ((string-match "/? *\\'" name)
2057 (substring name 0 (match-beginning 0)))))
2058 (setq user (substring user 0 (string-match " +\\'" user)))
2059 (setq group (substring group 0 (string-match " +\\'" group)))
2060 (setq mode (tar-grind-file-mode mode))
2061 ;; Move to the end of the data.
2062 (forward-char size) (if (eq ?\n (char-after)) (forward-char 1))
2063 (setq size (number-to-string size))
2064 (if (> (length name) maxname) (setq maxname (length name)))
2065 (if (> (length time) maxtime) (setq maxtime (length time)))
2066 (if (> (length user) maxuser) (setq maxuser (length user)))
2067 (if (> (length group) maxgroup) (setq maxgroup (length group)))
2068 (if (> (length mode) maxmode) (setq maxmode (length mode)))
2069 (if (> (length size) maxsize) (setq maxsize (length size)))
2070 (push (vector name extname nil mode
2071 time user group size)
2072 files)))
2073 (setq files (nreverse files))
2074 (goto-char (point-min))
2075 (let* ((format (format "%%%ds %%%ds/%%-%ds %%%ds %%%ds %%s"
2076 maxmode maxuser maxgroup maxsize maxtime))
2077 (sep (format format (make-string maxmode ?-)
2078 (make-string maxuser ?-)
2079 (make-string maxgroup ?-)
2080 (make-string maxsize ?-)
2081 (make-string maxtime ?-) ""))
2082 (column (length sep)))
2083 (insert (format format " Mode " "User" "Group" " Size "
2084 " Date " "Filename")
2085 "\n")
2086 (insert sep (make-string maxname ?-) "\n")
2087 (archive-summarize-files (mapcar (lambda (desc)
2088 (let ((text
2089 (format format
2090 (aref desc 3)
2091 (aref desc 5)
2092 (aref desc 6)
2093 (aref desc 7)
2094 (aref desc 4)
2095 (aref desc 1))))
2096 (vector text
2097 column
2098 (length text))))
2099 files))
2100 (insert sep (make-string maxname ?-) "\n")
2101 (apply 'vector files))))
2103 (defun archive-ar-extract (archive name)
2104 (let ((destbuf (current-buffer))
2105 (archivebuf (find-file-noselect archive))
2106 (from nil) size)
2107 (with-current-buffer archivebuf
2108 (save-restriction
2109 ;; We may be in archive-mode or not, so either with or without
2110 ;; narrowing and with or without a prepended summary.
2111 (save-excursion
2112 (widen)
2113 (search-forward "!<arch>\n")
2114 (while (and (not from) (looking-at archive-ar-file-header-re))
2115 (let ((this (match-string 1)))
2116 (setq size (string-to-number (match-string 6)))
2117 (goto-char (match-end 0))
2118 (if (equal name this)
2119 (setq from (point))
2120 ;; Move to the end of the data.
2121 (forward-char size) (if (eq ?\n (char-after)) (forward-char 1)))))
2122 (when from
2123 (set-buffer-multibyte nil)
2124 (with-current-buffer destbuf
2125 ;; Do it within the `widen'.
2126 (insert-buffer-substring archivebuf from (+ from size)))
2127 (set-buffer-multibyte 'to)
2128 ;; Inform the caller that the call succeeded.
2129 t))))))
2131 ;; -------------------------------------------------------------------------
2132 ;; This line was a mistake; it is kept now for compatibility.
2133 ;; rms 15 Oct 98
2134 (provide 'archive-mode)
2136 (provide 'arc-mode)
2138 ;; arch-tag: e5966a01-35ec-4f27-8095-a043a79b457b
2139 ;;; arc-mode.el ends here