| blob | 5f001ad977b43f177030e8d9c0904c9811236d55 |
1 ;;; arc-mode.el --- simple editing of archives
3 ;; Copyright (C) 1995, 1997-1998, 2001-2013 Free Software Foundation,
4 ;; Inc.
6 ;; Author: Morten Welinder <terra@gnu.org>
7 ;; Keywords: files archives msdog editing major-mode
8 ;; Favorite-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"
29 ;;
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
37 ;;
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.
43 ;;
44 ;; * dos-fns.el: (Part of Emacs 19). You get automatic ^M^J <--> ^J
45 ;; conversion.
46 ;;
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.
54 ;;
55 ;; Arc Lzh Zip Zoo Rar 7z
56 ;; --------------------------------------------
57 ;; View listing Intern Intern Intern Intern Y Y
58 ;; Extract member Y Y Y Y Y Y
59 ;; Save changed member Y Y Y Y N Y
60 ;; Add new member N N N N N N
61 ;; Delete member Y Y Y Y N Y
62 ;; Rename member Y Y N N N N
63 ;; Chmod - Y Y - N N
64 ;; Chown - Y - - N N
65 ;; Chgrp - Y - - N N
66 ;;
67 ;; Special thanks to Bill Brodie <wbrodie@panix.com> for very useful tips
68 ;; on the first released version of this package.
69 ;;
70 ;; This code is partly based on tar-mode.el from Emacs.
71 ;; -------------------------------------
72 ;; ARCHIVE STRUCTURES:
73 ;; (This is mostly for myself.)
74 ;;
75 ;; ARC A series of (header,file). No interactions among members.
76 ;;
77 ;; LZH A series of (header,file). Headers are checksummed. No
78 ;; interaction among members.
79 ;; Headers come in three flavors 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
85 ;;
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.
91 ;;
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.
97 ;;
98 ;; archive-mode-hook
99 ;; archive-foo-mode-hook
100 ;; archive-extract-hook
102 ;;; Code:
104 ;; -------------------------------------------------------------------------
105 ;;; Section: Configuration.
108 "Simple editing of archives."
112 "ARC-specific options to archive."
116 "LZH-specific options to archive."
120 "ZIP-specific options to archive."
124 "ZOO-specific options to archive."
128 ;; make-temp-name is safe here because we use this name
129 ;; to create a directory.
132 temporary-file-directory))
133 "Directory for temporary files made by `arc-mode.el'."
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."
147 "Hook run when an archive member has been extracted."
150 ;; ------------------------------
151 ;; Arc archive configuration
153 ;; We always go via a local file since there seems to be no reliable way
154 ;; to extract to stdout without junk getting added.
157 "Program and its options to run in order to extract an arc file member.
158 Extraction should happen to the current directory. Archive and member
159 name will be added."
162 :inline t
168 "Program and its options to run in order to delete arc file members.
169 Archive and member names will be added."
172 :inline t
178 "Program and its options to run in order to update an arc file member.
179 Archive and member name will be added."
182 :inline t
185 ;; ------------------------------
186 ;; Lzh archive configuration
190 "Program and its options to run in order to extract an lzh file member.
191 Extraction should happen to standard output. Archive and member name will
192 be added."
195 :inline t
201 "Program and its options to run in order to delete lzh file members.
202 Archive and member names will be added."
205 :inline t
211 "Program and its options to run in order to update an lzh file member.
212 Archive and member name will be added."
215 :inline t
218 ;; ------------------------------
219 ;; Zip archive configuration
226 "Program and its options to run in order to extract a zip file member.
227 Extraction should happen to standard output. Archive and member name will
228 be added."
231 :inline t
235 ;; For several reasons the latter behavior is not desirable in general.
236 ;; (1) It uses more disk space. (2) Error checking is worse or non-
237 ;; existent. (3) It tends to do funny things with other systems' file
238 ;; names.
245 "Program and its options to run in order to delete zip file members.
246 Archive and member names will be added."
249 :inline t
258 "Program and its options to run in order to update a zip file member.
259 Options should ensure that specified directory will be put into the zip
260 file. Archive and member name will be added."
263 :inline t
272 "Program and its options to run in order to update a case fiddled zip member.
273 Options should ensure that specified directory will be put into the zip file.
274 Archive and member name will be added."
277 :inline t
282 "If non-nil then zip file members may be down-cased.
283 This case fiddling will only happen for members created by a system
284 that uses caseless file names."
287 ;; ------------------------------
288 ;; Zoo archive configuration
292 "Program and its options to run in order to extract a zoo file member.
293 Extraction should happen to standard output. Archive and member name will
294 be added."
297 :inline t
303 "Program and its options to run in order to delete zoo file members.
304 Archive and member names will be added."
307 :inline t
313 "Program and its options to run in order to update a zoo file member.
314 Archive and member name will be added."
317 :inline t
320 ;; ------------------------------
321 ;; 7z archive configuration
325 "Program and its options to run in order to extract a 7z file member.
326 Extraction should happen to standard output. Archive and member name will
327 be added."
331 :inline t
337 "Program and its options to run in order to delete 7z file members.
338 Archive and member names will be added."
342 :inline t
348 "Program and its options to run in order to update a 7z file member.
349 Options should ensure that specified directory will be put into the 7z
350 file. Archive and member name will be added."
354 :inline t
358 ;; -------------------------------------------------------------------------
359 ;;; Section: Variables
372 ;;(define-key map "c" 'archive-copy)
382 (define-key map "o" 'archive-extract-other-window)
383 (define-key map "p" 'archive-previous-line)
384 (define-key map "\C-p" 'archive-previous-line)
385 (define-key map [up] 'archive-previous-line)
386 (define-key map "r" 'archive-rename-entry)
387 (define-key map "u" 'archive-unflag)
388 (define-key map "\M-\C-?" 'archive-unmark-all-files)
389 (define-key map "v" 'archive-view)
390 (define-key map "x" 'archive-expunge)
392 (define-key map "E" 'archive-extract-other-window)
393 (define-key map "M" 'archive-chmod-entry)
394 (define-key map "G" 'archive-chgrp-entry)
395 (define-key map "O" 'archive-chown-entry)
396 ;; Let mouse-1 follow the link.
397 (define-key map [follow-link] 'mouse-face)
399 (if (fboundp 'command-remapping)
400 (progn
401 (define-key map [remap advertised-undo] 'archive-undo)
402 (define-key map [remap undo] 'archive-undo))
403 (substitute-key-definition 'advertised-undo 'archive-undo map global-map)
404 (substitute-key-definition 'undo 'archive-undo map global-map))
406 (define-key map
407 (if (featurep 'xemacs) 'button2 [mouse-2]) 'archive-extract)
409 (if (featurep 'xemacs)
410 () ; out of luck
412 (define-key map [menu-bar immediate]
413 (cons "Immediate" (make-sparse-keymap "Immediate")))
414 (define-key map [menu-bar immediate alternate]
415 '(menu-item "Alternate Display" archive-alternate-display
416 :enable (boundp (archive-name "alternate-display"))
417 :help "Toggle alternate file info display"))
418 (define-key map [menu-bar immediate view]
419 '(menu-item "View This File" archive-view
420 :help "Display file at cursor in View Mode"))
421 (define-key map [menu-bar immediate display]
422 '(menu-item "Display in Other Window" archive-display-other-window
423 :help "Display file at cursor in another window"))
424 (define-key map [menu-bar immediate find-file-other-window]
425 '(menu-item "Find in Other Window" archive-extract-other-window
426 :help "Edit file at cursor in another window"))
427 (define-key map [menu-bar immediate find-file]
428 '(menu-item "Find This File" archive-extract
429 :help "Extract file at cursor and edit it"))
431 (define-key map [menu-bar mark]
432 (cons "Mark" (make-sparse-keymap "Mark")))
433 (define-key map [menu-bar mark unmark-all]
434 '(menu-item "Unmark All" archive-unmark-all-files
435 :help "Unmark all marked files"))
436 (define-key map [menu-bar mark deletion]
437 '(menu-item "Flag" archive-flag-deleted
438 :help "Flag file at cursor for deletion"))
439 (define-key map [menu-bar mark unmark]
440 '(menu-item "Unflag" archive-unflag
441 :help "Unmark file at cursor"))
442 (define-key map [menu-bar mark mark]
443 '(menu-item "Mark" archive-mark
444 :help "Mark file at cursor"))
446 (define-key map [menu-bar operate]
447 (cons "Operate" (make-sparse-keymap "Operate")))
448 (define-key map [menu-bar operate chown]
449 '(menu-item "Change Owner..." archive-chown-entry
450 :enable (fboundp (archive-name "chown-entry"))
451 :help "Change owner of marked files"))
452 (define-key map [menu-bar operate chgrp]
453 '(menu-item "Change Group..." archive-chgrp-entry
454 :enable (fboundp (archive-name "chgrp-entry"))
455 :help "Change group ownership of marked files"))
456 (define-key map [menu-bar operate chmod]
457 '(menu-item "Change Mode..." archive-chmod-entry
458 :enable (fboundp (archive-name "chmod-entry"))
459 :help "Change mode (permissions) of marked files"))
460 (define-key map [menu-bar operate rename]
461 '(menu-item "Rename to..." archive-rename-entry
462 :enable (fboundp (archive-name "rename-entry"))
463 :help "Rename marked files"))
464 ;;(define-key map [menu-bar operate copy]
465 ;; '(menu-item "Copy to..." archive-copy))
466 (define-key map [menu-bar operate expunge]
467 '(menu-item "Expunge Marked Files" archive-expunge
468 :help "Delete all flagged files from archive"))
469 map))
470 "Local keymap for archive mode listings.")
471 (defvar archive-file-name-indent nil "Column where file names start.")
473 (defvar archive-remote nil "Non-nil if the archive is outside file system.")
474 (make-variable-buffer-local 'archive-remote)
475 (put 'archive-remote 'permanent-local t)
477 (defvar archive-member-coding-system nil "Coding-system of archive member.")
478 (make-variable-buffer-local 'archive-member-coding-system)
480 (defvar archive-alternate-display nil
481 "Non-nil when alternate information is shown.")
482 (make-variable-buffer-local 'archive-alternate-display)
483 (put 'archive-alternate-display 'permanent-local t)
485 (defvar archive-superior-buffer nil "In archive members, points to archive.")
486 (put 'archive-superior-buffer 'permanent-local t)
488 (defvar archive-subfile-mode nil "Non-nil in archive member buffers.")
489 (make-variable-buffer-local 'archive-subfile-mode)
490 (put 'archive-subfile-mode 'permanent-local t)
492 (defvar archive-file-name-coding-system nil)
493 (make-variable-buffer-local 'archive-file-name-coding-system)
494 (put 'archive-file-name-coding-system 'permanent-local t)
496 (defvar archive-files nil
497 "Vector of file descriptors.
498 Each descriptor is a vector of the form
499 [EXT-FILE-NAME INT-FILE-NAME CASE-FIDDLED MODE ...]")
500 (make-variable-buffer-local 'archive-files)
502 ;; -------------------------------------------------------------------------
503 ;;; Section: Support functions.
505 (eval-when-compile
506 (defsubst byte-after (pos)
507 "Like char-after but an eight-bit char is converted to unibyte."
508 (multibyte-char-to-unibyte (char-after pos)))
509 (defsubst insert-unibyte (&rest args)
510 "Like insert but don't make unibyte string and eight-bit char multibyte."
511 (dolist (elt args)
512 (if (integerp elt)
513 (insert (if (< elt 128) elt (decode-char 'eight-bit elt)))
514 (insert (string-to-multibyte elt)))))
515 )
517 (defsubst archive-name (suffix)
518 (intern (concat "archive-" (symbol-name archive-subtype) "-" suffix)))
520 (defun archive-l-e (str &optional len float)
521 "Convert little endian string/vector STR to integer.
522 Alternatively, STR may be a buffer position in the current buffer
523 in which case a second argument, length LEN, should be supplied.
524 FLOAT, if non-nil, means generate and return a float instead of an integer
525 \(use this for numbers that can overflow the Emacs integer)."
526 (if (stringp str)
527 (setq len (length str))
528 (setq str (buffer-substring str (+ str len))))
529 (setq str (string-as-unibyte str))
530 (let ((result 0)
531 (i 0))
532 (while (< i len)
533 (setq i (1+ i)
534 result (+ (if float (* result 256.0) (ash result 8))
535 (aref str (- len i)))))
536 result))
538 (defun archive-int-to-mode (mode)
539 "Turn an integer like 0700 (i.e., 448) into a mode string like -rwx------."
540 ;; FIXME: merge with tar-grind-file-mode.
541 (string
542 (if (zerop (logand 8192 mode))
543 (if (zerop (logand 16384 mode)) ?- ?d)
544 ?c) ; completeness
545 (if (zerop (logand 256 mode)) ?- ?r)
546 (if (zerop (logand 128 mode)) ?- ?w)
547 (if (zerop (logand 64 mode))
548 (if (zerop (logand 1024 mode)) ?- ?S)
549 (if (zerop (logand 1024 mode)) ?x ?s))
550 (if (zerop (logand 32 mode)) ?- ?r)
551 (if (zerop (logand 16 mode)) ?- ?w)
552 (if (zerop (logand 8 mode))
553 (if (zerop (logand 2048 mode)) ?- ?S)
554 (if (zerop (logand 2048 mode)) ?x ?s))
555 (if (zerop (logand 4 mode)) ?- ?r)
556 (if (zerop (logand 2 mode)) ?- ?w)
557 (if (zerop (logand 1 mode)) ?- ?x)))
559 (defun archive-calc-mode (oldmode newmode &optional error)
560 "From the integer OLDMODE and the string NEWMODE calculate a new file mode.
561 NEWMODE may be an octal number including a leading zero in which case it
565 If optional third argument ERROR is non-nil an error will be signaled if
566 the mode is invalid. If ERROR is nil then nil will be returned."
567 (cond ((string-match "^0[0-7]*$" newmode)
568 (let ((result 0)
569 (len (length newmode))
570 (i 1))
571 (while (< i len)
572 (setq result (+ (lsh result 3) (aref newmode i) (- ?0))
573 i (1+ i)))
574 (logior (logand oldmode 65024) result)))
576 (let ((who 0)
577 (result oldmode)
578 (op (aref newmode (match-beginning 2)))
579 (bits 0)
580 (i (match-beginning 3)))
581 (while (< i (match-end 3))
582 (let ((rwx (aref newmode i)))
583 (setq bits (logior bits (cond ((= rwx ?r) 292)
584 ((= rwx ?w) 146)
585 ((= rwx ?x) 73)
586 ((= rwx ?s) 3072)
587 ((= rwx ?t) 512)))
588 i (1+ i))))
589 (while (< who (match-end 1))
590 (let* ((whoc (aref newmode who))
591 (whomask (cond ((= whoc ?a) 4095)
592 ((= whoc ?u) 1472)
593 ((= whoc ?g) 2104)
594 ((= whoc ?o) 7))))
595 (if (= op ?=)
596 (setq result (logand result (lognot whomask))))
597 (if (= op ?-)
598 (setq result (logand result (lognot (logand whomask bits))))
599 (setq result (logior result (logand whomask bits)))))
600 (setq who (1+ who)))
601 result))
602 (t
603 (if error
604 (error "Invalid mode specification: %s" newmode)))))
606 (defun archive-dosdate (date)
607 "Stringify dos packed DATE record."
608 (let ((year (+ 1980 (logand (ash date -9) 127)))
609 (month (logand (ash date -5) 15))
610 (day (logand date 31)))
611 (if (or (> month 12) (< month 1))
612 ""
613 (format "%2d-%s-%d"
614 day
615 (aref ["Jan" "Feb" "Mar" "Apr" "May" "Jun"
616 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"] (1- month))
617 year))))
619 (defun archive-dostime (time)
620 "Stringify dos packed TIME record."
621 (let ((hour (logand (ash time -11) 31))
622 (minute (logand (ash time -5) 63))
623 (second (* 2 (logand time 31)))) ; 2 seconds resolution
624 (format "%02d:%02d:%02d" hour minute second)))
626 (defun archive-unixdate (low high)
627 "Stringify Unix (LOW HIGH) date."
628 (let* ((time (cons high low))
629 (str (current-time-string time)))
630 (format "%s-%s-%s"
631 (substring str 8 10)
632 (substring str 4 7)
633 (format-time-string "%Y" time))))
635 (defun archive-unixtime (low high)
636 "Stringify Unix (LOW HIGH) time."
637 (let ((str (current-time-string (cons high low))))
638 (substring str 11 19)))
640 (defun archive-get-lineno ()
641 (if (>= (point) archive-file-list-start)
642 (count-lines archive-file-list-start
643 (line-beginning-position))
644 0))
646 (defun archive-get-descr (&optional noerror)
647 "Return the descriptor vector for file at point.
648 Does not signal an error if optional argument NOERROR is non-nil."
649 (let ((no (archive-get-lineno)))
650 (if (and (>= (point) archive-file-list-start)
651 (< no (length archive-files)))
652 (let ((item (aref archive-files no)))
653 (if (vectorp item)
654 item
655 (if (not noerror)
656 (error "Entry is not a regular member of the archive"))))
657 (if (not noerror)
658 (error "Line does not describe a member of the archive")))))
659 ;; -------------------------------------------------------------------------
660 ;;; Section: the mode definition
662 ;;;###autoload
663 (defun archive-mode (&optional force)
664 "Major mode for viewing an archive file in a dired-like way.
665 You can move around using the usual cursor motion commands.
666 Letters no longer insert themselves.
667 Type `e' to pull a file out of the archive and into its own buffer;
668 or click mouse-2 on the file's line in the archive mode buffer.
670 If you edit a sub-file of this archive (as with the `e' command) and
671 save it, the contents of that buffer will be saved back into the
672 archive.
675 ;; This is not interactive because you shouldn't be turning this
676 ;; mode on and off. You can corrupt things that way.
677 (if (zerop (buffer-size))
678 ;; At present we cannot create archives from scratch
679 (funcall (or (default-value 'major-mode) 'fundamental-mode))
680 (if (and (not force) archive-files) nil
681 (let* ((type (archive-find-type))
682 (typename (capitalize (symbol-name type))))
683 (kill-all-local-variables)
684 (make-local-variable 'archive-subtype)
685 (setq archive-subtype type)
687 ;; Buffer contains treated image of file before the file contents
688 (make-local-variable 'revert-buffer-function)
689 (setq revert-buffer-function 'archive-mode-revert)
690 (auto-save-mode 0)
692 (add-hook 'write-contents-functions 'archive-write-file nil t)
694 (make-local-variable 'require-final-newline)
695 (setq require-final-newline nil)
696 (make-local-variable 'local-enable-local-variables)
697 (setq local-enable-local-variables nil)
699 ;; Prevent loss of data when saving the file.
700 (make-local-variable 'file-precious-flag)
701 (setq file-precious-flag t)
703 (make-local-variable 'archive-read-only)
704 ;; Archives which are inside other archives and whose
705 ;; names are invalid for this OS, can't be written.
706 (setq archive-read-only
707 (or (not (file-writable-p (buffer-file-name)))
708 (and archive-subfile-mode
709 (string-match file-name-invalid-regexp
710 (aref archive-subfile-mode 0)))))
712 ;; Should we use a local copy when accessing from outside Emacs?
713 (make-local-variable 'archive-local-name)
715 ;; An archive can contain another archive whose name is invalid
716 ;; on local filesystem. Treat such archives as remote.
717 (or archive-remote
718 (setq archive-remote
719 (or (string-match archive-remote-regexp (buffer-file-name))
720 (string-match file-name-invalid-regexp
721 (buffer-file-name)))))
723 (setq major-mode 'archive-mode)
724 (setq mode-name (concat typename "-Archive"))
725 ;; Run archive-foo-mode-hook and archive-mode-hook
726 (run-mode-hooks (archive-name "mode-hook") 'archive-mode-hook)
727 (use-local-map archive-mode-map))
729 (make-local-variable 'archive-proper-file-start)
730 (make-local-variable 'archive-file-list-start)
731 (make-local-variable 'archive-file-list-end)
732 (make-local-variable 'archive-file-name-indent)
733 (setq archive-file-name-coding-system
734 (or file-name-coding-system
735 default-file-name-coding-system
736 locale-coding-system))
737 (if (default-value 'enable-multibyte-characters)
738 (set-buffer-multibyte 'to))
739 (archive-summarize nil)
740 (setq buffer-read-only t))))
742 ;; Archive mode is suitable only for specially formatted data.
743 (put 'archive-mode 'mode-class 'special)
745 (let ((item1 '(archive-subfile-mode " Archive")))
746 (or (member item1 minor-mode-alist)
747 (setq minor-mode-alist (cons item1 minor-mode-alist))))
748 ;; -------------------------------------------------------------------------
749 (defun archive-find-type ()
750 (widen)
751 (goto-char (point-min))
752 ;; The funny [] here make it unlikely that the .elc file will be treated
753 ;; as an archive by other software.
754 (let (case-fold-search)
756 ((looking-at "..-l[hz][0-9ds]-") 'lzh)
758 ((and (looking-at "\C-z") ; signature too simple, IMHO
760 (or buffer-file-name (buffer-name))))
761 'arc)
762 ;; This pattern modeled on the BSD/GNU+Linux `file' command.
763 ;; Have seen capital "LHA's", and file has lower case "LHa's" too.
764 ;; Note this regexp is also in archive-exe-p.
766 ((looking-at "Rar!") 'rar)
768 ((and (looking-at "MZ")
769 (re-search-forward "Rar!" (+ (point) 100000) t))
770 'rar-exe)
772 (t (error "Buffer format not recognized")))))
773 ;; -------------------------------------------------------------------------
775 (defun archive-desummarize ()
776 (let ((inhibit-read-only t)
777 (modified (buffer-modified-p)))
778 (widen)
779 (delete-region (point-min) archive-proper-file-start)
780 (restore-buffer-modified-p modified)))
783 (defun archive-summarize (&optional shut-up)
784 "Parse the contents of the archive file in the current buffer.
785 Place a dired-like listing on the front;
786 then narrow to it, so that only that listing
787 is visible (and the real data of the buffer is hidden).
788 Optional argument SHUT-UP, if non-nil, means don't print messages
789 when parsing the archive."
790 (widen)
791 (let ((buffer-file-truename nil) ; avoid changing dir mtime by lock_file
792 (inhibit-read-only t))
793 (setq archive-proper-file-start (copy-marker (point-min) t))
794 (set (make-local-variable 'change-major-mode-hook) 'archive-desummarize)
795 (or shut-up
796 (message "Parsing archive file..."))
797 (buffer-disable-undo (current-buffer))
798 (setq archive-files (funcall (archive-name "summarize")))
799 (or shut-up
800 (message "Parsing archive file...done."))
801 (setq archive-proper-file-start (point-marker))
802 (narrow-to-region (point-min) (point))
803 (set-buffer-modified-p nil)
804 (buffer-enable-undo))
805 (goto-char archive-file-list-start)
806 (archive-next-line 0))
808 (defun archive-resummarize ()
809 "Recreate the contents listing of an archive."
810 (let ((no (archive-get-lineno)))
811 (archive-desummarize)
812 (archive-summarize t)
813 (goto-char archive-file-list-start)
814 (archive-next-line no)))
816 (defun archive-summarize-files (files)
817 "Insert a description of a list of files annotated with proper mouse face."
818 (setq archive-file-list-start (point-marker))
819 (setq archive-file-name-indent (if files (aref (car files) 1) 0))
820 ;; We don't want to do an insert for each element since that takes too
821 ;; long when the archive -- which has to be moved in memory -- is large.
822 (insert
823 (apply
824 (function concat)
825 (mapcar
826 (lambda (fil)
827 ;; Using `concat' here copies the text also, so we can add
828 ;; properties without problems.
830 (if (featurep 'xemacs)
831 () ; out of luck
832 (add-text-properties
833 (aref fil 1) (aref fil 2)
834 '(mouse-face highlight
835 help-echo "mouse-2: extract this file into a buffer")
836 text))
837 text))
838 files)))
839 (setq archive-file-list-end (point-marker)))
841 (defun archive-alternate-display ()
842 "Toggle alternative display.
843 To avoid very long lines archive mode does not show all information.
844 This function changes the set of information shown for each files."
845 (interactive)
846 (setq archive-alternate-display (not archive-alternate-display))
847 (archive-resummarize))
848 ;; -------------------------------------------------------------------------
849 ;;; Section: Local archive copy handling
851 (defun archive-unique-fname (fname dir)
852 "Make sure a file FNAME can be created uniquely in directory DIR.
854 If FNAME can be uniquely created in DIR, it is returned unaltered.
855 If FNAME is something our underlying filesystem can't grok, or if another
856 file by that name already exists in DIR, a unique new name is generated
857 using `make-temp-file', and the generated name is returned."
858 (let ((fullname (expand-file-name fname dir))
859 (alien (string-match file-name-invalid-regexp fname))
860 (tmpfile
861 (expand-file-name
862 (if (if (fboundp 'msdos-long-file-names)
863 (not (msdos-long-file-names)))
864 "am"
865 "arc-mode.")
866 dir)))
867 (if (or alien (file-exists-p fullname))
868 (progn
869 ;; Make sure all the leading directories in
870 ;; archive-local-name exist under archive-tmpdir, so that
871 ;; the directory structure recorded in the archive is
872 ;; reconstructed in the temporary directory.
873 (make-directory (file-name-directory tmpfile) t)
874 (make-temp-file tmpfile))
875 ;; Make sure all the leading directories in `fullname' exist
876 ;; under archive-tmpdir. This is necessary for nested archives
877 ;; (`archive-extract' sets `archive-remote' to t in case
878 ;; an archive occurs inside another archive).
879 (make-directory (file-name-directory fullname) t)
880 fullname)))
882 (defun archive-maybe-copy (archive)
883 (let ((coding-system-for-write 'no-conversion))
884 (if archive-remote
885 (let ((start (point-max))
886 ;; Sometimes ARCHIVE is invalid while its actual name, as
887 ;; recorded in its parent archive, is not. For example, an
888 ;; archive bar.zip inside another archive foo.zip gets a name
889 ;; "foo.zip:bar.zip", which is invalid on DOS/Windows.
890 ;; So use the actual name if available.
891 (archive-name
892 (or (and archive-subfile-mode (aref archive-subfile-mode 0))
893 archive)))
894 (setq archive-local-name
895 (archive-unique-fname archive-name archive-tmpdir))
896 (save-restriction
897 (widen)
898 (write-region start (point-max) archive-local-name nil 'nomessage))
899 archive-local-name)
900 (if (buffer-modified-p) (save-buffer))
901 archive)))
903 (defun archive-maybe-update (unchanged)
904 (if archive-remote
905 (let ((name archive-local-name)
906 (modified (buffer-modified-p))
907 (coding-system-for-read 'no-conversion)
908 (lno (archive-get-lineno))
909 (inhibit-read-only t))
910 (if unchanged nil
911 (setq archive-files nil)
912 (erase-buffer)
913 (insert-file-contents name)
914 (archive-mode t)
915 (goto-char archive-file-list-start)
916 (archive-next-line lno))
917 (archive-delete-local name)
918 (if (not unchanged)
919 (message
920 "Buffer `%s' must be saved for changes to take effect"
921 (buffer-name (current-buffer))))
922 (set-buffer-modified-p (or modified (not unchanged))))))
924 (defun archive-delete-local (name)
925 "Delete file NAME and its parents up to and including `archive-tmpdir'."
926 (let ((again t)
927 (top (directory-file-name (file-name-as-directory archive-tmpdir))))
928 (condition-case nil
929 (delete-file name)
930 (error nil))
931 (while again
932 (setq name (directory-file-name (file-name-directory name)))
933 (condition-case nil
934 (delete-directory name)
935 (error nil))
936 (if (string= name top) (setq again nil)))))
937 ;; -------------------------------------------------------------------------
938 ;;; Section: Member extraction
940 (defun archive-try-jka-compr ()
941 (when (and auto-compression-mode
942 (jka-compr-get-compression-info buffer-file-name))
943 (let* ((basename (file-name-nondirectory buffer-file-name))
945 (match-string 1 basename) basename))
946 (tmpfile (make-temp-file (file-name-sans-extension tmpname)
947 nil
948 (file-name-extension tmpname 'period))))
949 (unwind-protect
950 (progn
951 (let ((coding-system-for-write 'no-conversion)
952 ;; Don't re-compress this data just before decompressing it.
953 (jka-compr-inhibit t))
954 (write-region (point-min) (point-max) tmpfile nil 'quiet))
955 (erase-buffer)
956 (let ((coding-system-for-read 'no-conversion))
957 (insert-file-contents tmpfile)))
958 (delete-file tmpfile)))))
960 (defun archive-file-name-handler (op &rest args)
961 (or (eq op 'file-exists-p)
962 (let ((file-name-handler-alist nil))
963 (apply op args))))
965 (defun archive-set-buffer-as-visiting-file (filename)
966 "Set the current buffer as if it were visiting FILENAME."
967 (save-excursion
968 (goto-char (point-min))
969 (let ((buffer-undo-list t)
970 (coding
971 (or coding-system-for-read
972 (and set-auto-coding-function
973 (save-excursion
974 (funcall set-auto-coding-function
975 filename (- (point-max) (point-min)))))
976 ;; The following let-binding of file-name-handler-alist forces
977 ;; find-file-not-found-set-buffer-file-coding-system to ignore
978 ;; the file's name (see dos-w32.el).
979 (let ((file-name-handler-alist
980 '(("" . archive-file-name-handler))))
981 (car (find-operation-coding-system
982 'insert-file-contents
983 (cons filename (current-buffer)) t))))))
984 (unless (or coding-system-for-read
985 enable-multibyte-characters)
986 (setq coding
987 (coding-system-change-text-conversion coding 'raw-text)))
988 (unless (memq coding '(nil no-conversion))
989 (decode-coding-region (point-min) (point-max) coding)
990 (setq last-coding-system-used coding))
991 (set-buffer-modified-p nil)
992 (kill-local-variable 'buffer-file-coding-system)
993 (after-insert-file-set-coding (- (point-max) (point-min))))))
995 (define-obsolete-function-alias 'archive-mouse-extract 'archive-extract "22.1")
997 (defun archive-extract (&optional other-window-p event)
998 "In archive mode, extract this entry of the archive into its own buffer."
999 (interactive (list nil last-input-event))
1000 (if event (posn-set-point (event-end event)))
1001 (let* ((view-p (eq other-window-p 'view))
1002 (descr (archive-get-descr))
1003 (ename (aref descr 0))
1004 (iname (aref descr 1))
1005 (archive-buffer (current-buffer))
1006 (arcdir default-directory)
1007 (archive (buffer-file-name))
1008 (arcname (file-name-nondirectory archive))
1009 (bufname (concat (file-name-nondirectory iname) " (" arcname ")"))
1010 (extractor (archive-name "extract"))
1011 ;; Members with file names which aren't valid for the
1012 ;; underlying filesystem, are treated as read-only.
1013 (read-only-p (or archive-read-only
1014 view-p
1015 (string-match file-name-invalid-regexp ename)))
1016 (arcfilename (expand-file-name (concat arcname ":" iname)))
1017 (buffer (get-buffer bufname))
1018 (just-created nil)
1019 (file-name-coding archive-file-name-coding-system))
1020 (if (and buffer
1021 (string= (buffer-file-name buffer) arcfilename))
1022 nil
1023 (setq archive (archive-maybe-copy archive))
1024 (setq bufname (generate-new-buffer-name bufname))
1025 (setq buffer (get-buffer-create bufname))
1026 (setq just-created t)
1027 (with-current-buffer buffer
1028 (setq buffer-file-name arcfilename)
1029 (setq buffer-file-truename
1030 (abbreviate-file-name buffer-file-name))
1031 ;; Set the default-directory to the dir of the superior buffer.
1032 (setq default-directory arcdir)
1033 (make-local-variable 'archive-superior-buffer)
1034 (setq archive-superior-buffer archive-buffer)
1035 (add-hook 'write-file-functions 'archive-write-file-member nil t)
1036 (setq archive-subfile-mode descr)
1037 (setq archive-file-name-coding-system file-name-coding)
1038 (if (and
1039 (null
1040 (let (;; We may have to encode the file name argument for
1041 ;; external programs.
1042 (coding-system-for-write
1043 (and enable-multibyte-characters
1044 archive-file-name-coding-system))
1045 ;; We read an archive member by no-conversion at
1046 ;; first, then decode appropriately by calling
1047 ;; archive-set-buffer-as-visiting-file later.
1048 (coding-system-for-read 'no-conversion))
1049 (condition-case err
1050 (if (fboundp extractor)
1051 (funcall extractor archive ename)
1052 (archive-*-extract archive ename
1053 (symbol-value extractor)))
1054 (error
1055 (ding (message "%s" (error-message-string err)))
1056 nil))))
1057 just-created)
1058 (progn
1059 (set-buffer-modified-p nil)
1060 (kill-buffer buffer))
1061 (archive-try-jka-compr) ;Pretty ugly hack :-(
1062 (archive-set-buffer-as-visiting-file ename)
1063 (goto-char (point-min))
1064 (rename-buffer bufname)
1065 (setq buffer-read-only read-only-p)
1066 (setq buffer-undo-list nil)
1067 (set-buffer-modified-p nil)
1068 (setq buffer-saved-size (buffer-size))
1069 (normal-mode)
1070 ;; Just in case an archive occurs inside another archive.
1071 (when (derived-mode-p 'archive-mode)
1072 (setq archive-remote t)
1073 (if read-only-p (setq archive-read-only t))
1074 ;; We will write out the archive ourselves if it is
1075 ;; part of another archive.
1076 (remove-hook 'write-contents-functions 'archive-write-file t))
1077 (run-hooks 'archive-extract-hook)
1078 (if archive-read-only
1079 (message "Note: altering this archive is not implemented."))))
1080 (archive-maybe-update t))
1081 (or (not (buffer-name buffer))
1082 (cond
1083 (view-p
1084 (view-buffer buffer (and just-created 'kill-buffer-if-not-modified)))
1085 ((eq other-window-p 'display) (display-buffer buffer))
1086 (other-window-p (switch-to-buffer-other-window buffer))
1087 (t (switch-to-buffer buffer))))))
1089 (defun archive-*-extract (archive name command)
1090 (let* ((default-directory (file-name-as-directory archive-tmpdir))
1091 (tmpfile (expand-file-name (file-name-nondirectory name)
1092 default-directory))
1093 exit-status success)
1094 (make-directory (directory-file-name default-directory) t)
1095 (setq exit-status
1096 (apply 'call-process
1097 (car command)
1098 nil
1099 nil
1100 nil
1101 (append (cdr command) (list archive name))))
1102 (cond ((and (numberp exit-status) (zerop exit-status))
1103 (if (not (file-exists-p tmpfile))
1104 (ding (message "`%s': no such file or directory" tmpfile))
1105 (insert-file-contents tmpfile)
1106 (setq success t)))
1107 ((numberp exit-status)
1108 (ding
1109 (message "`%s' exited with status %d" (car command) exit-status)))
1110 ((stringp exit-status)
1111 (ding (message "`%s' aborted: %s" (car command) exit-status)))
1112 (t
1113 (ding (message "`%s' failed" (car command)))))
1114 (archive-delete-local tmpfile)
1115 success))
1117 (defun archive-extract-by-stdout (archive name command &optional stderr-test)
1118 (let ((stderr-file (make-temp-file "arc-stderr")))
1119 (unwind-protect
1120 (prog1
1121 (apply 'call-process
1122 (car command)
1123 nil
1124 (if stderr-file (list t stderr-file) t)
1125 nil
1126 (append (cdr command) (list archive name)))
1127 (with-temp-buffer
1128 (insert-file-contents stderr-file)
1129 (goto-char (point-min))
1130 (when (if (stringp stderr-test)
1131 (not (re-search-forward stderr-test nil t))
1132 (> (buffer-size) 0))
1133 (message "%s" (buffer-string)))))
1134 (if (file-exists-p stderr-file)
1135 (delete-file stderr-file)))))
1137 (defun archive-extract-by-file (archive name command &optional stdout-test)
1138 (let ((dest (make-temp-file "arc-dir" 'dir))
1139 (stdout-file (make-temp-file "arc-stdout")))
1140 (unwind-protect
1141 (prog1
1142 (apply 'call-process
1143 (car command)
1144 nil
1145 `(:file ,stdout-file)
1146 nil
1147 (append (cdr command) (list archive name dest)))
1148 (with-temp-buffer
1149 (insert-file-contents stdout-file)
1150 (goto-char (point-min))
1151 (when (if (stringp stdout-test)
1152 (not (re-search-forward stdout-test nil t))
1153 (> (buffer-size) 0))
1154 (message "%s" (buffer-string))))
1155 (if (file-exists-p (expand-file-name name dest))
1156 (insert-file-contents-literally (expand-file-name name dest))))
1157 (if (file-exists-p stdout-file)
1158 (delete-file stdout-file))
1159 (if (file-exists-p (expand-file-name name dest))
1160 (delete-file (expand-file-name name dest)))
1161 (while (file-name-directory name)
1162 (setq name (directory-file-name (file-name-directory name)))
1163 (delete-directory (expand-file-name name dest)))
1164 (delete-directory dest))))
1166 (defun archive-extract-other-window ()
1167 "In archive mode, find this member in another window."
1168 (interactive)
1169 (archive-extract t))
1171 (defun archive-display-other-window ()
1172 "In archive mode, display this member in another window."
1173 (interactive)
1174 (archive-extract 'display))
1176 (defun archive-view ()
1177 "In archive mode, view the member on this line."
1178 (interactive)
1179 (archive-extract 'view))
1181 (defun archive-add-new-member (arcbuf name)
1182 "Add current buffer to the archive in ARCBUF naming it NAME."
1183 (interactive
1184 (list (get-buffer
1185 (read-buffer "Buffer containing archive: "
1186 ;; Find first archive buffer and suggest that
1187 (let ((bufs (buffer-list)))
1188 (while (and bufs
1189 (not (with-current-buffer (car bufs)
1190 (derived-mode-p 'archive-mode))))
1191 (setq bufs (cdr bufs)))
1192 (if bufs
1193 (car bufs)
1194 (error "There are no archive buffers")))
1195 t))
1196 (read-string "File name in archive: "
1197 (if buffer-file-name
1198 (file-name-nondirectory buffer-file-name)
1199 ""))))
1200 (with-current-buffer arcbuf
1201 (or (derived-mode-p 'archive-mode)
1202 (error "Buffer is not an archive buffer"))
1203 (if archive-read-only
1204 (error "Archive is read-only")))
1205 (if (eq arcbuf (current-buffer))
1206 (error "An archive buffer cannot be added to itself"))
1207 (if (string= name "")
1208 (error "Archive members may not be given empty names"))
1209 (let ((func (with-current-buffer arcbuf
1210 (archive-name "add-new-member")))
1211 (membuf (current-buffer)))
1212 (if (fboundp func)
1213 (with-current-buffer arcbuf
1214 (funcall func buffer-file-name membuf name))
1215 (error "Adding a new member is not supported for this archive type"))))
1216 ;; -------------------------------------------------------------------------
1217 ;;; Section: IO stuff
1219 (defun archive-write-file-member ()
1220 (save-excursion
1221 (save-restriction
1222 (message "Updating archive...")
1223 (widen)
1224 (let ((writer (with-current-buffer archive-superior-buffer
1225 (archive-name "write-file-member")))
1226 (archive (with-current-buffer archive-superior-buffer
1227 (archive-maybe-copy (buffer-file-name)))))
1228 (if (fboundp writer)
1229 (funcall writer archive archive-subfile-mode)
1230 (archive-*-write-file-member archive
1231 archive-subfile-mode
1232 (symbol-value writer)))
1233 (set-buffer-modified-p nil)
1234 (message "Updating archive...done"))
1235 (set-buffer archive-superior-buffer)
1236 (if (not archive-remote) (revert-buffer) (archive-maybe-update nil))))
1237 ;; Restore the value of last-coding-system-used, so that basic-save-buffer
1238 ;; won't reset the coding-system of this archive member.
1239 (if (local-variable-p 'archive-member-coding-system)
1240 (setq last-coding-system-used archive-member-coding-system))
1241 t)
1243 (defun archive-*-write-file-member (archive descr command)
1244 (let* ((ename (aref descr 0))
1245 (tmpfile (expand-file-name ename archive-tmpdir))
1246 (top (directory-file-name (file-name-as-directory archive-tmpdir)))
1247 (default-directory (file-name-as-directory top)))
1248 (unwind-protect
1249 (progn
1250 (make-directory (file-name-directory tmpfile) t)
1251 ;; If the member is itself an archive, write it without
1252 ;; the dired-like listing we created.
1253 (if (eq major-mode 'archive-mode)
1254 (archive-write-file tmpfile)
1255 (write-region nil nil tmpfile nil 'nomessage))
1256 ;; basic-save-buffer needs last-coding-system-used to have
1257 ;; the value used to write the file, so save it before any
1258 ;; further processing clobbers it (we restore it in
1259 ;; archive-write-file-member, above).
1260 (setq archive-member-coding-system last-coding-system-used)
1261 (if (aref descr 3)
1262 ;; Set the file modes, but make sure we can read it.
1264 (setq ename
1265 (encode-coding-string ename archive-file-name-coding-system))
1266 (let* ((coding-system-for-write 'no-conversion)
1267 (exitcode (apply 'call-process
1268 (car command)
1269 nil
1270 nil
1271 nil
1272 (append (cdr command)
1273 (list archive ename)))))
1274 (or (zerop exitcode)
1275 (error "Updating was unsuccessful (%S)" exitcode))))
1276 (archive-delete-local tmpfile))))
1278 (defun archive-write-file (&optional file)
1279 (save-excursion
1280 (let ((coding-system-for-write 'no-conversion))
1281 (write-region archive-proper-file-start (point-max)
1282 (or file buffer-file-name) nil t)
1283 (set-buffer-modified-p nil))
1284 t))
1285 ;; -------------------------------------------------------------------------
1286 ;;; Section: Marking and unmarking.
1288 (defun archive-flag-deleted (p &optional type)
1289 "In archive mode, mark this member to be deleted from the archive.
1290 With a prefix argument, mark that many files."
1291 (interactive "p")
1292 (or type (setq type ?D))
1293 (beginning-of-line)
1294 (let ((sign (if (>= p 0) +1 -1))
1295 (modified (buffer-modified-p))
1296 (inhibit-read-only t))
1297 (while (not (zerop p))
1298 (if (archive-get-descr t)
1299 (progn
1300 (delete-char 1)
1301 (insert type)))
1302 (forward-line sign)
1303 (setq p (- p sign)))
1304 (restore-buffer-modified-p modified))
1305 (archive-next-line 0))
1307 (defun archive-unflag (p)
1308 "In archive mode, un-mark this member if it is marked to be deleted.
1309 With a prefix argument, un-mark that many files forward."
1310 (interactive "p")
1311 (archive-flag-deleted p ?\s))
1313 (defun archive-unflag-backwards (p)
1314 "In archive mode, un-mark this member if it is marked to be deleted.
1315 With a prefix argument, un-mark that many members backward."
1316 (interactive "p")
1317 (archive-flag-deleted (- p) ?\s))
1319 (defun archive-unmark-all-files ()
1320 "Remove all marks."
1321 (interactive)
1322 (let ((modified (buffer-modified-p))
1323 (inhibit-read-only t))
1324 (save-excursion
1325 (goto-char archive-file-list-start)
1326 (while (< (point) archive-file-list-end)
1327 (or (= (following-char) ?\s)
1328 (progn (delete-char 1) (insert ?\s)))
1329 (forward-line 1)))
1330 (restore-buffer-modified-p modified)))
1332 (defun archive-mark (p)
1333 "In archive mode, mark this member for group operations.
1334 With a prefix argument, mark that many members.
1336 (interactive "p")
1337 (archive-flag-deleted p ?*))
1339 (defun archive-get-marked (mark &optional default)
1340 (let (files)
1341 (save-excursion
1342 (goto-char archive-file-list-start)
1343 (while (< (point) archive-file-list-end)
1344 (if (= (following-char) mark)
1345 (setq files (cons (archive-get-descr) files)))
1346 (forward-line 1)))
1347 (or (nreverse files)
1348 (and default
1349 (list (archive-get-descr))))))
1350 ;; -------------------------------------------------------------------------
1351 ;;; Section: Operate
1353 (defun archive-next-line (p)
1354 (interactive "p")
1355 (forward-line p)
1356 (or (eobp)
1357 (forward-char archive-file-name-indent)))
1359 (defun archive-previous-line (p)
1360 (interactive "p")
1361 (archive-next-line (- p)))
1363 (defun archive-chmod-entry (new-mode)
1364 "Change the protection bits associated with all marked or this member.
1365 The new protection bits can either be specified as an octal number or
1367 (interactive "sNew mode (octal or relative): ")
1368 (if archive-read-only (error "Archive is read-only"))
1369 (let ((func (archive-name "chmod-entry")))
1370 (if (fboundp func)
1371 (progn
1372 (funcall func new-mode (archive-get-marked ?* t))
1373 (archive-resummarize))
1374 (error "Setting mode bits is not supported for this archive type"))))
1376 (defun archive-chown-entry (new-uid)
1377 "Change the owner of all marked or this member."
1378 (interactive "nNew uid: ")
1379 (if archive-read-only (error "Archive is read-only"))
1380 (let ((func (archive-name "chown-entry")))
1381 (if (fboundp func)
1382 (progn
1383 (funcall func new-uid (archive-get-marked ?* t))
1384 (archive-resummarize))
1385 (error "Setting owner is not supported for this archive type"))))
1387 (defun archive-chgrp-entry (new-gid)
1388 "Change the group of all marked or this member."
1389 (interactive "nNew gid: ")
1390 (if archive-read-only (error "Archive is read-only"))
1391 (let ((func (archive-name "chgrp-entry")))
1392 (if (fboundp func)
1393 (progn
1394 (funcall func new-gid (archive-get-marked ?* t))
1395 (archive-resummarize))
1396 (error "Setting group is not supported for this archive type"))))
1398 (defun archive-expunge ()
1399 "Do the flagged deletions."
1400 (interactive)
1401 (let (files)
1402 (save-excursion
1403 (goto-char archive-file-list-start)
1404 (while (< (point) archive-file-list-end)
1405 (if (= (following-char) ?D)
1406 (setq files (cons (aref (archive-get-descr) 0) files)))
1407 (forward-line 1)))
1408 (setq files (nreverse files))
1409 (and files
1410 (or (not archive-read-only)
1411 (error "Archive is read-only"))
1412 (or (yes-or-no-p (format "Really delete %d member%s? "
1413 (length files)
1414 (if (null (cdr files)) "" "s")))
1415 (error "Operation aborted"))
1416 (let ((archive (archive-maybe-copy (buffer-file-name)))
1417 (expunger (archive-name "expunge")))
1418 (if (fboundp expunger)
1419 (funcall expunger archive files)
1420 (archive-*-expunge archive files (symbol-value expunger)))
1421 (archive-maybe-update nil)
1422 (if archive-remote
1423 (archive-resummarize)
1424 (revert-buffer))))))
1426 (defun archive-*-expunge (archive files command)
1427 (apply 'call-process
1428 (car command)
1429 nil
1430 nil
1431 nil
1432 (append (cdr command) (cons archive files))))
1434 (defun archive-rename-entry (newname)
1435 "Change the name associated with this entry in the archive file."
1436 (interactive "sNew name: ")
1437 (if archive-read-only (error "Archive is read-only"))
1438 (if (string= newname "")
1439 (error "Archive members may not be given empty names"))
1440 (let ((func (archive-name "rename-entry"))
1441 (descr (archive-get-descr)))
1442 (if (fboundp func)
1443 (progn
1444 (funcall func
1445 (encode-coding-string newname
1446 archive-file-name-coding-system)
1447 descr)
1448 (archive-resummarize))
1449 (error "Renaming is not supported for this archive type"))))
1451 ;; Revert the buffer and recompute the dired-like listing.
1452 (defun archive-mode-revert (&optional _no-auto-save _no-confirm)
1453 (let ((no (archive-get-lineno)))
1454 (setq archive-files nil)
1455 (let ((revert-buffer-function nil)
1456 (coding-system-for-read 'no-conversion))
1457 (revert-buffer t t))
1458 (archive-mode)
1459 (goto-char archive-file-list-start)
1460 (archive-next-line no)))
1462 (defun archive-undo ()
1463 "Undo in an archive buffer.
1464 This doesn't recover lost files, it just undoes changes in the buffer itself."
1465 (interactive)
1466 (let ((inhibit-read-only t))
1467 (undo)))
1468 ;; -------------------------------------------------------------------------
1469 ;;; Section: Arc Archives
1471 (defun archive-arc-summarize ()
1472 (let ((p 1)
1473 (totalsize 0)
1474 (maxlen 8)
1475 files
1476 visual)
1477 (while (and (< (+ p 29) (point-max))
1478 (= (byte-after p) ?\C-z)
1479 (> (byte-after (1+ p)) 0))
1480 (let* ((namefld (buffer-substring (+ p 2) (+ p 2 13)))
1481 (fnlen (or (string-match "\0" namefld) 13))
1482 (efnname (decode-coding-string (substring namefld 0 fnlen)
1483 archive-file-name-coding-system))
1484 ;; Convert to float to avoid overflow for very large files.
1485 (csize (archive-l-e (+ p 15) 4 'float))
1486 (moddate (archive-l-e (+ p 19) 2))
1487 (modtime (archive-l-e (+ p 21) 2))
1488 (ucsize (archive-l-e (+ p 25) 4 'float))
1489 (fiddle (string= efnname (upcase efnname)))
1490 (ifnname (if fiddle (downcase efnname) efnname))
1491 (text (format " %8.0f %-11s %-8s %s"
1492 ucsize
1493 (archive-dosdate moddate)
1494 (archive-dostime modtime)
1495 ifnname)))
1496 (setq maxlen (max maxlen fnlen)
1497 totalsize (+ totalsize ucsize)
1498 visual (cons (vector text
1499 (- (length text) (length ifnname))
1500 (length text))
1501 visual)
1502 files (cons (vector efnname ifnname fiddle nil (1- p))
1503 files)
1504 ;; p needs to stay an integer, since we use it in char-after
1505 ;; above. Passing through `round' limits the compressed size
1506 ;; to most-positive-fixnum, but if the compressed size exceeds
1507 ;; that, we cannot visit the archive anyway.
1508 p (+ p 29 (round csize)))))
1509 (goto-char (point-min))
1510 (let ((dash (concat "- -------- ----------- -------- "
1511 (make-string maxlen ?-)
1514 dash)
1515 (archive-summarize-files (nreverse visual))
1516 (insert dash
1517 (format " %8.0f %d file%s"
1518 totalsize
1519 (length files)
1520 (if (= 1 (length files)) "" "s"))
1522 (apply 'vector (nreverse files))))
1524 (defun archive-arc-rename-entry (newname descr)
1526 (error "File names in arc files must not contain a directory component"))
1527 (if (> (length newname) 12)
1528 (error "File names in arc files are limited to 12 characters"))
1529 (let ((name (concat newname (substring "\0\0\0\0\0\0\0\0\0\0\0\0\0"
1530 (length newname))))
1531 (inhibit-read-only t))
1532 (save-restriction
1533 (save-excursion
1534 (widen)
1535 (goto-char (+ archive-proper-file-start (aref descr 4) 2))
1536 (delete-char 13)
1537 (insert-unibyte name)))))
1538 ;; -------------------------------------------------------------------------
1539 ;;; Section: Lzh Archives
1541 (defun archive-lzh-summarize (&optional start)
1542 (let ((p (or start 1)) ;; 1 for .lzh, something further on for .exe
1543 (totalsize 0)
1544 (maxlen 8)
1545 files
1546 visual)
1547 (while (progn (goto-char p) ;beginning of a base header.
1549 (let* ((hsize (byte-after p)) ;size of the base header (level 0 and 1)
1550 ;; Convert to float to avoid overflow for very large files.
1551 (csize (archive-l-e (+ p 7) 4 'float)) ;size of a compressed file to follow (level 0 and 2),
1552 ;size of extended headers + the compressed file to follow (level 1).
1553 (ucsize (archive-l-e (+ p 11) 4 'float)) ;size of an uncompressed file.
1554 (time1 (archive-l-e (+ p 15) 2)) ;date/time (MSDOS format in level 0, 1 headers
1555 (time2 (archive-l-e (+ p 17) 2)) ;and UNIX format in level 2 header.)
1556 (hdrlvl (byte-after (+ p 20))) ;header level
1557 thsize ;total header size (base + extensions)
1558 fnlen efnname osid fiddle ifnname width p2
1559 neh ;beginning of next extension header (level 1 and 2)
1560 mode modestr uid gid text dir prname
1561 gname uname modtime moddate)
1562 (if (= hdrlvl 3) (error "can't handle lzh level 3 header type"))
1563 (when (or (= hdrlvl 0) (= hdrlvl 1))
1564 (setq fnlen (byte-after (+ p 21))) ;filename length
1565 (setq efnname (let ((str (buffer-substring (+ p 22) (+ p 22 fnlen)))) ;filename from offset 22
1566 (decode-coding-string
1567 str archive-file-name-coding-system)))
1568 (setq p2 (+ p 22 fnlen))) ;
1569 (if (= hdrlvl 1)
1570 (setq neh (+ p2 3)) ;specific to level 1 header
1571 (if (= hdrlvl 2)
1572 (setq neh (+ p 24)))) ;specific to level 2 header
1573 (if neh ;if level 1 or 2 we expect extension headers to follow
1574 (let* ((ehsize (archive-l-e neh 2)) ;size of the extension header
1575 (etype (byte-after (+ neh 2)))) ;extension type
1576 (while (not (= ehsize 0))
1577 (cond
1578 ((= etype 1) ;file name
1579 (let ((i (+ neh 3)))
1580 (while (< i (+ neh ehsize))
1581 (setq efnname (concat efnname (char-to-string (byte-after i))))
1582 (setq i (1+ i)))))
1583 ((= etype 2) ;directory name
1584 (let ((i (+ neh 3)))
1585 (while (< i (+ neh ehsize))
1586 (setq dir (concat dir
1587 (if (= (byte-after i)
1588 255)
1589 "/"
1590 (char-to-string
1591 (char-after i)))))
1592 (setq i (1+ i)))))
1593 ((= etype 80) ;Unix file permission
1594 (setq mode (archive-l-e (+ neh 3) 2)))
1595 ((= etype 81) ;UNIX file group/user ID
1596 (progn (setq uid (archive-l-e (+ neh 3) 2))
1597 (setq gid (archive-l-e (+ neh 5) 2))))
1598 ((= etype 82) ;UNIX file group name
1599 (let ((i (+ neh 3)))
1600 (while (< i (+ neh ehsize))
1601 (setq gname (concat gname (char-to-string (char-after i))))
1602 (setq i (1+ i)))))
1603 ((= etype 83) ;UNIX file user name
1604 (let ((i (+ neh 3)))
1605 (while (< i (+ neh ehsize))
1606 (setq uname (concat uname (char-to-string (char-after i))))
1607 (setq i (1+ i)))))
1608 )
1609 (setq neh (+ neh ehsize))
1610 (setq ehsize (archive-l-e neh 2))
1611 (setq etype (byte-after (+ neh 2))))
1612 ;;get total header size for level 1 and 2 headers
1613 (setq thsize (- neh p))))
1614 (if (= hdrlvl 0) ;total header size
1615 (setq thsize hsize))
1616 ;; OS ID field not present in level 0 header, use code 0 "generic"
1617 ;; in that case as per lha program header.c get_header()
1618 (setq osid (cond ((= hdrlvl 0) 0)
1619 ((= hdrlvl 1) (char-after (+ p 22 fnlen 2)))
1620 ((= hdrlvl 2) (char-after (+ p 23)))))
1621 ;; Filename fiddling must follow the lha program, otherwise the name
1622 ;; passed to "lha pq" etc won't match (which for an extract silently
1623 ;; results in no output). As of version 1.14i it goes from the OS ID,
1624 ;; - For 'M' MSDOS: msdos_to_unix_filename() downcases always, and
1626 ;; - For 0 generic: generic_to_unix_filename() downcases if there's
1628 ;; - For 'm' MacOS: macos_to_unix_filename() changes "/" to ":" and
1629 ;; ":" to "/"
1630 (setq fiddle (cond ((= ?M osid) t)
1631 ((= 0 osid) (string= efnname (upcase efnname)))))
1632 (setq ifnname (if fiddle (downcase efnname) efnname))
1633 (setq prname (if dir (concat dir ifnname) ifnname))
1634 (setq width (if prname (string-width prname) 0))
1635 (setq modestr (if mode (archive-int-to-mode mode) "??????????"))
1636 (setq moddate (if (= hdrlvl 2)
1637 (archive-unixdate time1 time2) ;level 2 header in UNIX format
1638 (archive-dosdate time2))) ;level 0 and 1 header in DOS format
1639 (setq modtime (if (= hdrlvl 2)
1640 (archive-unixtime time1 time2)
1641 (archive-dostime time1)))
1642 (setq text (if archive-alternate-display
1643 (format " %8.0f %5S %5S %s"
1644 ucsize
1645 (or uid "?")
1646 (or gid "?")
1647 ifnname)
1648 (format " %10s %8.0f %-11s %-8s %s"
1649 modestr
1650 ucsize
1651 moddate
1652 modtime
1653 prname)))
1654 (setq maxlen (max maxlen width)
1655 totalsize (+ totalsize ucsize)
1656 visual (cons (vector text
1657 (- (length text) (length prname))
1658 (length text))
1659 visual)
1660 files (cons (vector prname ifnname fiddle mode (1- p))
1661 files))
1662 (cond ((= hdrlvl 1)
1663 ;; p needs to stay an integer, since we use it in goto-char
1664 ;; above. Passing through `round' limits the compressed size
1665 ;; to most-positive-fixnum, but if the compressed size exceeds
1666 ;; that, we cannot visit the archive anyway.
1667 (setq p (+ p hsize 2 (round csize))))
1668 ((or (= hdrlvl 2) (= hdrlvl 0))
1669 (setq p (+ p thsize 2 (round csize)))))
1670 ))
1671 (goto-char (point-min))
1672 (let ((dash (concat (if archive-alternate-display
1673 "- -------- ----- ----- "
1674 "- ---------- -------- ----------- -------- ")
1675 (make-string maxlen ?-)
1677 (header (if archive-alternate-display
1680 (sumline (if archive-alternate-display
1681 " %8.0f %d file%s"
1682 " %8.0f %d file%s")))
1683 (insert header dash)
1684 (archive-summarize-files (nreverse visual))
1685 (insert dash
1686 (format sumline
1687 totalsize
1688 (length files)
1689 (if (= 1 (length files)) "" "s"))
1691 (apply 'vector (nreverse files))))
1693 (defconst archive-lzh-alternate-display t)
1695 (defun archive-lzh-extract (archive name)
1696 (archive-extract-by-stdout archive name archive-lzh-extract))
1698 (defun archive-lzh-resum (p count)
1699 (let ((sum 0))
1700 (while (> count 0)
1701 (setq count (1- count)
1702 sum (+ sum (byte-after p))
1703 p (1+ p)))
1704 (logand sum 255)))
1706 (defun archive-lzh-rename-entry (newname descr)
1707 (save-restriction
1708 (save-excursion
1709 (widen)
1710 (let* ((p (+ archive-proper-file-start (aref descr 4)))
1711 (oldhsize (byte-after p))
1712 (oldfnlen (byte-after (+ p 21)))
1713 (newfnlen (length newname))
1714 (newhsize (+ oldhsize newfnlen (- oldfnlen)))
1715 (inhibit-read-only t))
1716 (if (> newhsize 255)
1717 (error "The file name is too long"))
1718 (goto-char (+ p 21))
1719 (delete-char (1+ oldfnlen))
1720 (insert-unibyte newfnlen newname)
1721 (goto-char p)
1722 (delete-char 2)
1723 (insert-unibyte newhsize (archive-lzh-resum p newhsize))))))
1725 (defun archive-lzh-ogm (newval files errtxt ofs)
1726 (save-excursion
1727 (save-restriction
1728 (widen)
1729 (dolist (fil files)
1730 (let* ((p (+ archive-proper-file-start (aref fil 4)))
1731 (hsize (byte-after p))
1732 (fnlen (byte-after (+ p 21)))
1733 (p2 (+ p 22 fnlen))
1734 (creator (if (>= (- hsize fnlen) 24) (byte-after (+ p2 2)) 0))
1735 (inhibit-read-only t))
1736 (if (= creator ?U)
1737 (progn
1738 (or (numberp newval)
1739 (setq newval (funcall newval (archive-l-e (+ p2 ofs) 2))))
1740 (goto-char (+ p2 ofs))
1741 (delete-char 2)
1742 (insert-unibyte (logand newval 255) (lsh newval -8))
1743 (goto-char (1+ p))
1744 (delete-char 1)
1745 (insert-unibyte (archive-lzh-resum (1+ p) hsize)))
1746 (message "Member %s does not have %s field"
1747 (aref fil 1) errtxt)))))))
1749 (defun archive-lzh-chown-entry (newuid files)
1750 (archive-lzh-ogm newuid files "an uid" 10))
1752 (defun archive-lzh-chgrp-entry (newgid files)
1753 (archive-lzh-ogm newgid files "a gid" 12))
1755 (defun archive-lzh-chmod-entry (newmode files)
1756 (archive-lzh-ogm
1757 ;; This should work even though newmode will be dynamically accessed.
1758 (lambda (old) (archive-calc-mode old newmode t))
1759 files "a unix-style mode" 8))
1761 ;; -------------------------------------------------------------------------
1762 ;;; Section: Lzh Self-Extracting .exe Archives
1763 ;;
1764 ;; No support for modifying these files. It looks like the lha for unix
1765 ;; program (as of version 1.14i) can't create or retain the DOS exe part.
1766 ;; If you do an "lha a" on a .exe for instance it renames and writes to a
1767 ;; plain .lzh.
1769 (defun archive-lzh-exe-summarize ()
1770 "Summarize the contents of an LZH self-extracting exe, for `archive-mode'."
1772 ;; Skip the initial executable code part and apply archive-lzh-summarize
1773 ;; to the archive part proper. The "-lh5-" etc regexp here for the start
1774 ;; is the same as in archive-find-type.
1775 ;;
1776 ;; The lha program (version 1.14i) does this in skip_msdos_sfx1_code() by
1777 ;; a similar scan. It looks for "..-l..-" plus for level 0 or 1 a test of
1778 ;; the header checksum, or level 2 a test of the "attribute" and size.
1779 ;;
1780 (re-search-forward "..-l[hz][0-9ds]-" nil)
1781 (archive-lzh-summarize (match-beginning 0)))
1783 ;; `archive-lzh-extract' runs "lha pq", and that works for .exe as well as
1784 ;; .lzh files
1785 (defalias 'archive-lzh-exe-extract 'archive-lzh-extract
1786 "Extract a member from an LZH self-extracting exe, for `archive-mode'.")
1788 ;; -------------------------------------------------------------------------
1789 ;;; Section: Zip Archives
1791 (defun archive-zip-summarize ()
1792 (goto-char (- (point-max) (- 22 18)))
1794 (let ((p (+ (point-min) (archive-l-e (+ (point) 16) 4)))
1795 (maxlen 8)
1796 (totalsize 0)
1797 files
1798 visual)
1800 (let* ((creator (byte-after (+ p 5)))
1801 ;; (method (archive-l-e (+ p 10) 2))
1802 (modtime (archive-l-e (+ p 12) 2))
1803 (moddate (archive-l-e (+ p 14) 2))
1804 ;; Convert to float to avoid overflow for very large files.
1805 (ucsize (archive-l-e (+ p 24) 4 'float))
1806 (fnlen (archive-l-e (+ p 28) 2))
1807 (exlen (archive-l-e (+ p 30) 2))
1808 (fclen (archive-l-e (+ p 32) 2))
1809 (lheader (archive-l-e (+ p 42) 4))
1810 (efnname (let ((str (buffer-substring (+ p 46) (+ p 46 fnlen))))
1811 (decode-coding-string
1812 str archive-file-name-coding-system)))
1813 (isdir (and (= ucsize 0)
1814 (string= (file-name-nondirectory efnname) "")))
1815 (mode (cond ((memq creator '(2 3)) ; Unix
1816 (archive-l-e (+ p 40) 2))
1817 ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
1820 (if (zerop
1821 (logand 1 (byte-after (+ p 38))))
1823 (t nil)))
1824 (modestr (if mode (archive-int-to-mode mode) "??????????"))
1825 (fiddle (and archive-zip-case-fiddle
1826 (not (not (memq creator '(0 2 4 5 9))))
1827 (string= (upcase efnname) efnname)))
1828 (ifnname (if fiddle (downcase efnname) efnname))
1829 (width (string-width ifnname))
1830 (text (format " %10s %8.0f %-11s %-8s %s"
1831 modestr
1832 ucsize
1833 (archive-dosdate moddate)
1834 (archive-dostime modtime)
1835 ifnname)))
1836 (setq maxlen (max maxlen width)
1837 totalsize (+ totalsize ucsize)
1838 visual (cons (vector text
1839 (- (length text) (length ifnname))
1840 (length text))
1841 visual)
1842 files (cons (if isdir
1843 nil
1844 (vector efnname ifnname fiddle mode
1845 (list (1- p) lheader)))
1846 files)
1847 p (+ p 46 fnlen exlen fclen))))
1848 (goto-char (point-min))
1849 (let ((dash (concat "- ---------- -------- ----------- -------- "
1850 (make-string maxlen ?-)
1853 dash)
1854 (archive-summarize-files (nreverse visual))
1855 (insert dash
1856 (format " %8.0f %d file%s"
1857 totalsize
1858 (length files)
1859 (if (= 1 (length files)) "" "s"))
1861 (apply 'vector (nreverse files))))
1863 (defun archive-zip-extract (archive name)
1864 (cond
1865 ((member-ignore-case (car archive-zip-extract) '("pkunzip" "pkzip"))
1866 (archive-*-extract archive name archive-zip-extract))
1867 ((equal (car archive-zip-extract) "7z")
1868 (let ((archive-7z-extract archive-zip-extract))
1869 (archive-7z-extract archive name)))
1870 (t
1871 (archive-extract-by-stdout
1872 archive
1873 ;; unzip expands wildcards in NAME, so we need to quote it. But
1874 ;; not on DOS/Windows, since that fails extraction on those
1875 ;; systems (unless w32-quote-process-args is nil), and file names
1876 ;; with wildcards in zip archives don't work there anyway.
1877 ;; FIXME: Does pkunzip need similar treatment?
1878 (if (and (or (not (memq system-type '(windows-nt ms-dos)))
1879 (and (boundp 'w32-quote-process-args)
1880 (null w32-quote-process-args)))
1881 (equal (car archive-zip-extract) "unzip"))
1882 (shell-quote-argument name)
1883 name)
1884 archive-zip-extract))))
1886 (defun archive-zip-write-file-member (archive descr)
1887 (archive-*-write-file-member
1888 archive
1889 descr
1890 (if (aref descr 2) archive-zip-update-case archive-zip-update)))
1892 (defun archive-zip-chmod-entry (newmode files)
1893 (save-restriction
1894 (save-excursion
1895 (widen)
1896 (dolist (fil files)
1897 (let* ((p (+ archive-proper-file-start (car (aref fil 4))))
1898 (creator (byte-after (+ p 5)))
1899 (oldmode (aref fil 3))
1900 (newval (archive-calc-mode oldmode newmode t))
1901 (inhibit-read-only t))
1902 (cond ((memq creator '(2 3)) ; Unix
1903 (goto-char (+ p 40))
1904 (delete-char 2)
1905 (insert-unibyte (logand newval 255) (lsh newval -8)))
1906 ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
1907 (goto-char (+ p 38))
1908 (insert-unibyte (logior (logand (byte-after (point)) 254)
1909 (logand (logxor 1 (lsh newval -7)) 1)))
1910 (delete-char 1))
1911 (t (message "Don't know how to change mode for this member"))))
1912 ))))
1913 ;; -------------------------------------------------------------------------
1914 ;;; Section: Zoo Archives
1916 (defun archive-zoo-summarize ()
1917 (let ((p (1+ (archive-l-e 25 4)))
1918 (maxlen 8)
1919 (totalsize 0)
1920 files
1921 visual)
1923 (> (archive-l-e (+ p 6) 4) 0))
1924 (let* ((next (1+ (archive-l-e (+ p 6) 4)))
1925 (moddate (archive-l-e (+ p 14) 2))
1926 (modtime (archive-l-e (+ p 16) 2))
1927 ;; Convert to float to avoid overflow for very large files.
1928 (ucsize (archive-l-e (+ p 20) 4 'float))
1929 (namefld (buffer-substring (+ p 38) (+ p 38 13)))
1930 (dirtype (byte-after (+ p 4)))
1931 (lfnlen (if (= dirtype 2) (byte-after (+ p 56)) 0))
1932 (ldirlen (if (= dirtype 2) (byte-after (+ p 57)) 0))
1933 (fnlen (or (string-match "\0" namefld) 13))
1934 (efnname (let ((str
1935 (concat
1936 (if (> ldirlen 0)
1937 (concat (buffer-substring
1938 (+ p 58 lfnlen)
1939 (+ p 58 lfnlen ldirlen -1))
1940 "/")
1941 "")
1942 (if (> lfnlen 0)
1943 (buffer-substring (+ p 58)
1944 (+ p 58 lfnlen -1))
1945 (substring namefld 0 fnlen)))))
1946 (decode-coding-string
1947 str archive-file-name-coding-system)))
1948 (fiddle (and (= lfnlen 0) (string= efnname (upcase efnname))))
1949 (ifnname (if fiddle (downcase efnname) efnname))
1950 (width (string-width ifnname))
1951 (text (format " %8.0f %-11s %-8s %s"
1952 ucsize
1953 (archive-dosdate moddate)
1954 (archive-dostime modtime)
1955 ifnname)))
1956 (setq maxlen (max maxlen width)
1957 totalsize (+ totalsize ucsize)
1958 visual (cons (vector text
1959 (- (length text) (length ifnname))
1960 (length text))
1961 visual)
1962 files (cons (vector efnname ifnname fiddle nil (1- p))
1963 files)
1964 p next)))
1965 (goto-char (point-min))
1966 (let ((dash (concat "- -------- ----------- -------- "
1967 (make-string maxlen ?-)
1970 dash)
1971 (archive-summarize-files (nreverse visual))
1972 (insert dash
1973 (format " %8.0f %d file%s"
1974 totalsize
1975 (length files)
1976 (if (= 1 (length files)) "" "s"))
1978 (apply 'vector (nreverse files))))
1980 (defun archive-zoo-extract (archive name)
1981 (archive-extract-by-stdout archive name archive-zoo-extract))
1983 ;; -------------------------------------------------------------------------
1984 ;;; Section: Rar Archives
1986 (defun archive-rar-summarize (&optional file)
1987 ;; File is used internally for `archive-rar-exe-summarize'.
1988 (unless file (setq file buffer-file-name))
1989 (let* ((copy (file-local-copy file))
1990 (maxname 10)
1991 (maxsize 5)
1992 (files ()))
1993 (with-temp-buffer
1994 (call-process "unrar-free" nil t nil "--list" (or file copy))
1995 (if copy (delete-file copy))
1996 (goto-char (point-min))
1999 ;; Size ; Packed.
2001 ;; Ratio ; Date'
2003 ;; Time ; Attr.
2005 ;; CRC; Meth ; Var.
2007 (goto-char (match-end 0))
2008 (let ((name (match-string 1))
2009 (size (match-string 2)))
2010 (if (> (length name) maxname) (setq maxname (length name)))
2011 (if (> (length size) maxsize) (setq maxsize (length size)))
2012 (push (vector name name nil nil
2013 ;; Size, Ratio.
2014 size (match-string 3)
2015 ;; Date, Time.
2016 (match-string 4) (match-string 5))
2017 files))))
2018 (setq files (nreverse files))
2019 (goto-char (point-min))
2020 (let* ((format (format " %%s %%s %%%ds %%5s %%s" maxsize))
2021 (sep (format format "--------" "-----" (make-string maxsize ?-)
2022 "-----" ""))
2023 (column (length sep)))
2026 (archive-summarize-files (mapcar (lambda (desc)
2027 (let ((text
2028 (format format
2029 (aref desc 6)
2030 (aref desc 7)
2031 (aref desc 4)
2032 (aref desc 5)
2033 (aref desc 1))))
2034 (vector text
2035 column
2036 (length text))))
2037 files))
2039 (apply 'vector files))))
2041 (defun archive-rar-extract (archive name)
2042 ;; unrar-free seems to have no way to extract to stdout or even to a file.
2043 (if (file-name-absolute-p name)
2044 ;; The code below assumes the name is relative and may do undesirable
2045 ;; things otherwise.
2046 (error "Can't extract files with non-relative names")
2047 (archive-extract-by-file archive name '("unrar-free" "--extract") "All OK")))
2049 ;;; Section: Rar self-extracting .exe archives.
2051 (defun archive-rar-exe-summarize ()
2052 (let ((tmpfile (make-temp-file "rarexe")))
2053 (unwind-protect
2054 (progn
2055 (goto-char (point-min))
2056 (re-search-forward "Rar!")
2057 (write-region (match-beginning 0) (point-max) tmpfile)
2058 (archive-rar-summarize tmpfile))
2059 (delete-file tmpfile))))
2061 (defun archive-rar-exe-extract (archive name)
2062 (let* ((tmpfile (make-temp-file "rarexe"))
2063 (buf (find-buffer-visiting archive))
2064 (tmpbuf (unless buf (generate-new-buffer " *rar-exe*"))))
2065 (unwind-protect
2066 (progn
2067 (with-current-buffer (or buf tmpbuf)
2068 (save-excursion
2069 (save-restriction
2070 (if buf
2071 ;; point-max unwidened is assumed to be the end of the
2072 ;; summary text and the beginning of the actual file data.
2073 (progn (goto-char (point-max)) (widen))
2074 (insert-file-contents-literally archive)
2075 (goto-char (point-min)))
2076 (re-search-forward "Rar!")
2077 (write-region (match-beginning 0) (point-max) tmpfile))))
2078 (archive-rar-extract tmpfile name))
2079 (if tmpbuf (kill-buffer tmpbuf))
2080 (delete-file tmpfile))))
2082 ;; -------------------------------------------------------------------------
2083 ;;; Section: 7z Archives
2085 (defun archive-7z-summarize ()
2086 (let ((maxname 10)
2087 (maxsize 5)
2088 (file buffer-file-name)
2089 (files ()))
2090 (with-temp-buffer
2091 (call-process "7z" nil t nil "l" "-slt" file)
2092 (goto-char (point-min))
2093 ;; Four dashes start the meta info section that should be skipped.
2094 ;; Archive members start with more than four dashes.
2097 (goto-char (match-end 0))
2098 (let ((name (match-string 1))
2099 (size (save-excursion
2101 (match-string 1))))
2102 (time (save-excursion
2104 (match-string 1)))))
2105 (if (> (length name) maxname) (setq maxname (length name)))
2106 (if (> (length size) maxsize) (setq maxsize (length size)))
2107 (push (vector name name nil nil time nil nil size)
2108 files))))
2109 (setq files (nreverse files))
2110 (goto-char (point-min))
2111 (let* ((format (format " %%%ds %%s %%s" maxsize))
2112 (sep (format format (make-string maxsize ?-) "-------------------" ""))
2113 (column (length sep)))
2116 (archive-summarize-files (mapcar (lambda (desc)
2117 (let ((text
2118 (format format
2119 (aref desc 7)
2120 (aref desc 4)
2121 (aref desc 1))))
2122 (vector text
2123 column
2124 (length text))))
2125 files))
2127 (apply 'vector files))))
2129 (defun archive-7z-extract (archive name)
2130 ;; 7z doesn't provide a `quiet' option to suppress non-essential
2131 ;; stderr messages. So redirect stderr to a temp file and display it
2132 ;; in the echo area when it contains no message indicating success.
2133 (archive-extract-by-stdout
2134 archive name archive-7z-extract "Everything is Ok"))
2136 (defun archive-7z-write-file-member (archive descr)
2137 (archive-*-write-file-member
2138 archive
2139 descr
2140 archive-7z-update))
2142 ;; -------------------------------------------------------------------------
2143 ;;; Section `ar' archives.
2145 ;; TODO: we currently only handle the basic format of ar archives,
2146 ;; not the GNU nor the BSD extensions. As it turns out, this is sufficient
2147 ;; for .deb packages.
2149 (autoload 'tar-grind-file-mode "tar-mode")
2151 (defconst archive-ar-file-header-re
2152 "\\(.\\{16\\}\\)\\([ 0-9]\\{12\\}\\)\\([ 0-9]\\{6\\}\\)\\([ 0-9]\\{6\\}\\)\\([ 0-7]\\{8\\}\\)\\([ 0-9]\\{10\\}\\)`\n")
2154 (defun archive-ar-summarize ()
2155 ;; File is used internally for `archive-rar-exe-summarize'.
2156 (let* ((maxname 10)
2157 (maxtime 16)
2158 (maxuser 5)
2159 (maxgroup 5)
2160 (maxmode 8)
2161 (maxsize 5)
2162 (files ()))
2163 (goto-char (point-min))
2165 (while (looking-at archive-ar-file-header-re)
2166 (let ((name (match-string 1))
2167 extname
2168 ;; Emacs will automatically use float here because those
2169 ;; timestamps don't fit in our ints.
2170 (time (string-to-number (match-string 2)))
2171 (user (match-string 3))
2172 (group (match-string 4))
2173 (mode (string-to-number (match-string 5) 8))
2174 (size (string-to-number (match-string 6))))
2175 ;; Move to the beginning of the data.
2176 (goto-char (match-end 0))
2177 (setq time
2178 (format-time-string
2179 "%Y-%m-%d %H:%M"
2180 (let ((high (truncate (/ time 65536))))
2181 (list high (truncate (- time (* 65536.0 high)))))))
2182 (setq extname
2183 (cond ((equal name "// ")
2184 (propertize ".<ExtNamesTable>." 'face 'italic))
2185 ((equal name "/ ")
2186 (propertize ".<LookupTable>." 'face 'italic))
2188 (substring name 0 (match-beginning 0)))))
2191 (setq mode (tar-grind-file-mode mode))
2192 ;; Move to the end of the data.
2194 (setq size (number-to-string size))
2195 (if (> (length name) maxname) (setq maxname (length name)))
2196 (if (> (length time) maxtime) (setq maxtime (length time)))
2197 (if (> (length user) maxuser) (setq maxuser (length user)))
2198 (if (> (length group) maxgroup) (setq maxgroup (length group)))
2199 (if (> (length mode) maxmode) (setq maxmode (length mode)))
2200 (if (> (length size) maxsize) (setq maxsize (length size)))
2201 (push (vector name extname nil mode
2202 time user group size)
2203 files)))
2204 (setq files (nreverse files))
2205 (goto-char (point-min))
2206 (let* ((format (format "%%%ds %%%ds/%%-%ds %%%ds %%%ds %%s"
2207 maxmode maxuser maxgroup maxsize maxtime))
2208 (sep (format format (make-string maxmode ?-)
2209 (make-string maxuser ?-)
2210 (make-string maxgroup ?-)
2211 (make-string maxsize ?-)
2212 (make-string maxtime ?-) ""))
2213 (column (length sep)))
2214 (insert (format format " Mode " "User" "Group" " Size "
2215 " Date " "Filename")
2218 (archive-summarize-files (mapcar (lambda (desc)
2219 (let ((text
2220 (format format
2221 (aref desc 3)
2222 (aref desc 5)
2223 (aref desc 6)
2224 (aref desc 7)
2225 (aref desc 4)
2226 (aref desc 1))))
2227 (vector text
2228 column
2229 (length text))))
2230 files))
2232 (apply 'vector files))))
2234 (defun archive-ar-extract (archive name)
2235 (let ((destbuf (current-buffer))
2236 (archivebuf (find-file-noselect archive))
2237 (from nil) size)
2238 (with-current-buffer archivebuf
2239 (save-restriction
2240 ;; We may be in archive-mode or not, so either with or without
2241 ;; narrowing and with or without a prepended summary.
2242 (save-excursion
2243 (widen)
2245 (while (and (not from) (looking-at archive-ar-file-header-re))
2246 (let ((this (match-string 1)))
2247 (setq size (string-to-number (match-string 6)))
2248 (goto-char (match-end 0))
2249 (if (equal name this)
2250 (setq from (point))
2251 ;; Move to the end of the data.
2253 (when from
2254 (set-buffer-multibyte nil)
2255 (with-current-buffer destbuf
2256 ;; Do it within the `widen'.
2257 (insert-buffer-substring archivebuf from (+ from size)))
2258 (set-buffer-multibyte 'to)
2259 ;; Inform the caller that the call succeeded.
2260 t))))))
2262 ;; -------------------------------------------------------------------------
2263 ;; This line was a mistake; it is kept now for compatibility.
2264 ;; rms 15 Oct 98
2265 (provide 'archive-mode)
2267 (provide 'arc-mode)
2269 ;;; arc-mode.el ends here