;;; arc-mode.el --- simple editing of archives
-;; Copyright (C) 1995, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
;; Author: Morten Welinder <terra@diku.dk>
;; Keywords: archives msdog editing major-mode
:group 'archive)
(defcustom archive-tmpdir
- (expand-file-name
- (make-temp-name (if (eq system-type 'ms-dos) "ar" "archive.tmp"))
- (or (getenv "TMPDIR") (getenv "TMP") "/tmp"))
+ (make-temp-name
+ (expand-file-name (if (eq system-type 'ms-dos) "ar" "archive.tmp")
+ (or (getenv "TMPDIR") (getenv "TMP") "/tmp")))
"*Directory for temporary files made by arc-mode.el"
:type 'directory
:group 'archive)
+(defvar archive-file-name-invalid-regexp
+ (cond ((and (eq system-type 'ms-dos) (not (msdos-long-file-names)))
+ (concat "\\(^\\([A-z]:\\)?/?.*:\\)\\|" ; colon except after drive
+ "[+, ;=|<>\"?*]\\|\\[\\|\\]\\|" ; invalid characters
+ "\\(/\\.\\.?[^/]\\)\\|" ; leading dots
+ "\\(/[^/.]+\\.[^/.]*\\.\\)")) ; more than a single dot
+ ((memq system-type '(ms-dos windows-nt))
+ (concat "\\(^\\([A-z]:\\)?/?.*:\\)\\|" ; colon except after drive
+ "[|<>\"?*]")) ; invalid characters
+ (t "[\000]"))
+ "Regexp recognizing file names which aren't allowed by the filesystem.")
+
(defcustom archive-remote-regexp "^/[^/:]*[^/:.]:"
"*Regexp recognizing archive files names that are not local.
A non-local file is one whose file name is not proper outside Emacs.
:group 'archive-zip)
(defcustom archive-zip-case-fiddle t
- "*If non-nil then zip file members are case fiddled.
-Case fiddling will only happen for members created by a system that
-uses caseless file names."
+ "*If non-nil then zip file members may be down-cased.
+This case fiddling will only happen for members created by a system
+that uses caseless file names."
:type 'boolean
:group 'archive-zip)
;; ------------------------------
(defvar archive-file-list-end nil "*Position just after last contents line.")
(defvar archive-proper-file-start nil "*Position of real archive's start.")
(defvar archive-read-only nil "*Non-nil if the archive is read-only on disk.")
-(defvar archive-remote nil "*Non-nil if the archive is outside file system.")
(defvar archive-local-name nil "*Name of local copy of remote archive.")
(defvar archive-mode-map nil "*Local keymap for archive mode listings.")
(defvar archive-file-name-indent nil "*Column where file names start.")
+(defvar archive-remote nil "*Non-nil if the archive is outside file system.")
+(make-variable-buffer-local 'archive-remote)
+(put 'archive-remote 'permanent-local t)
+
+(defvar archive-member-coding-system nil "Coding-system of archive member.")
+(make-variable-buffer-local 'archive-member-coding-system)
+
(defvar archive-alternate-display nil
"*Non-nil when alternate information is shown.")
(make-variable-buffer-local 'archive-alternate-display)
(make-local-variable 'revert-buffer-function)
(setq revert-buffer-function 'archive-mode-revert)
(auto-save-mode 0)
- (make-local-variable 'write-contents-hooks)
- (add-hook 'write-contents-hooks 'archive-write-file)
- ;; Real file contents is binary
+ ;; Remote archives are not written by a hook.
+ (if archive-remote nil
+ (make-local-variable 'write-contents-hooks)
+ (add-hook 'write-contents-hooks 'archive-write-file))
+
(make-local-variable 'require-final-newline)
(setq require-final-newline nil)
(make-local-variable 'enable-local-variables)
(setq enable-local-variables nil)
(make-local-variable 'archive-read-only)
- (setq archive-read-only (not (file-writable-p (buffer-file-name))))
+ ;; Archives which are inside other archives and whose
+ ;; names are invalid for this OS, can't be written.
+ (setq archive-read-only
+ (or (not (file-writable-p (buffer-file-name)))
+ (and archive-subfile-mode
+ (string-match archive-file-name-invalid-regexp
+ (aref archive-subfile-mode 0)))))
;; Should we use a local copy when accessing from outside Emacs?
(make-local-variable 'archive-local-name)
- (make-local-variable 'archive-remote)
- (setq archive-remote (string-match archive-remote-regexp
- (buffer-file-name)))
+
+ ;; An archive can contain another archive whose name is invalid
+ ;; on local filesystem. Treat such archives as remote.
+ (or archive-remote
+ (setq archive-remote
+ (or (string-match archive-remote-regexp (buffer-file-name))
+ (string-match archive-file-name-invalid-regexp
+ (buffer-file-name)))))
(setq major-mode 'archive-mode)
(setq mode-name (concat typename "-Archive"))
(make-local-variable 'archive-file-list-start)
(make-local-variable 'archive-file-list-end)
(make-local-variable 'archive-file-name-indent)
- (archive-summarize)
+ (archive-summarize nil)
(setq buffer-read-only t))))
;; Archive mode is suitable only for specially formatted data.
'arc)
(t (error "Buffer format not recognized.")))))
;; -------------------------------------------------------------------------
-(defun archive-summarize ()
+(defun archive-summarize (&optional shut-up)
"Parse the contents of the archive file in the current buffer.
Place a dired-like listing on the front;
then narrow to it, so that only that listing
-is visible (and the real data of the buffer is hidden)."
+is visible (and the real data of the buffer is hidden).
+Optional argument SHUT-UP, if non-nil, means don't print messages
+when parsing the archive."
(widen)
(let (buffer-read-only)
- (message "Parsing archive file...")
+ (or shut-up
+ (message "Parsing archive file..."))
(buffer-disable-undo (current-buffer))
(setq archive-files (funcall (archive-name "summarize")))
- (message "Parsing archive file...done.")
+ (or shut-up
+ (message "Parsing archive file...done."))
(setq archive-proper-file-start (point-marker))
(narrow-to-region (point-min) (point))
(set-buffer-modified-p nil)
buffer-read-only)
(widen)
(delete-region (point-min) archive-proper-file-start)
- (archive-summarize)
+ (archive-summarize t)
(set-buffer-modified-p modified)
(goto-char archive-file-list-start)
(archive-next-line no)))
;; -------------------------------------------------------------------------
;; Section: Local archive copy handling
+(defun archive-unique-fname (fname dir)
+ "Make sure a file FNAME can be created uniquely in directory DIR.
+
+If FNAME can be uniquely created in DIR, it is returned unaltered.
+If FNAME is something our underlying filesystem can't grok, or if another
+file by that name already exists in DIR, a unique new name is generated
+using `make-temp-name', and the generated name is returned."
+ (let ((fullname (expand-file-name fname dir))
+ (alien (string-match archive-file-name-invalid-regexp fname)))
+ (if (or alien (file-exists-p fullname))
+ (make-temp-name
+ (expand-file-name
+ (if (and (eq system-type 'ms-dos) (not (msdos-long-file-names)))
+ "am"
+ "arc-mode.")
+ dir))
+ fullname)))
+
(defun archive-maybe-copy (archive)
- (if archive-remote
- (let ((start (point-max)))
- (setq archive-local-name (expand-file-name
- (file-name-nondirectory archive)
- archive-tmpdir))
- (make-directory archive-tmpdir t)
- (save-restriction
- (widen)
- (write-region start (point-max) archive-local-name nil 'nomessage))
- archive-local-name)
- (if (buffer-modified-p) (save-buffer))
- archive))
+ (let ((coding-system-for-write 'no-conversion))
+ (if archive-remote
+ (let ((start (point-max))
+ ;; Sometimes ARCHIVE is invalid while its actual name, as
+ ;; recorded in its parent archive, is not. For example, an
+ ;; archive bar.zip inside another archive foo.zip gets a name
+ ;; "foo.zip:bar.zip", which is invalid on DOS/Windows.
+ ;; So use the actual name if available.
+ (archive-name
+ (or (and archive-subfile-mode (aref archive-subfile-mode 0))
+ archive)))
+ (make-directory archive-tmpdir t)
+ (setq archive-local-name
+ (archive-unique-fname archive-name archive-tmpdir))
+ (save-restriction
+ (widen)
+ (write-region start (point-max) archive-local-name nil 'nomessage))
+ archive-local-name)
+ (if (buffer-modified-p) (save-buffer))
+ archive)))
(defun archive-maybe-update (unchanged)
(if archive-remote
(let ((name archive-local-name)
(modified (buffer-modified-p))
+ (coding-system-for-read 'no-conversion)
+ (lno (archive-get-lineno))
buffer-read-only)
(if unchanged nil
+ (setq archive-files nil)
(erase-buffer)
(insert-file-contents name)
- (archive-mode t))
+ (archive-mode t)
+ (goto-char archive-file-list-start)
+ (archive-next-line lno))
(archive-delete-local name)
(if (not unchanged)
- (message "Archive file must be saved for changes to take effect"))
+ (message
+ "Buffer `%s' must be saved for changes to take effect"
+ (buffer-name (current-buffer))))
(set-buffer-modified-p (or modified (not unchanged))))))
(defun archive-delete-local (name)
(arcname (file-name-nondirectory archive))
(bufname (concat (file-name-nondirectory iname) " (" arcname ")"))
(extractor (archive-name "extract"))
- (read-only-p (or archive-read-only view-p))
+ ;; Members with file names which aren't valid for the
+ ;; underlying filesystem, are treated as read-only.
+ (read-only-p (or archive-read-only
+ view-p
+ (string-match archive-file-name-invalid-regexp ename)))
(buffer (get-buffer bufname))
(just-created nil))
(if buffer
(make-local-variable 'local-write-file-hooks)
(add-hook 'local-write-file-hooks 'archive-write-file-member)
(setq archive-subfile-mode descr)
-; (if (boundp 'default-buffer-file-type)
-; (setq buffer-file-type t))
(if (and
(null
(if (fboundp extractor)
(normal-mode)
;; Just in case an archive occurs inside another archive.
(if (eq major-mode 'archive-mode)
- (setq archive-remote t))
- (run-hooks 'archive-extract-hooks))
- (archive-maybe-update t)))
+ (progn
+ (setq archive-remote t)
+ (if read-only-p (setq archive-read-only t))
+ ;; We will write out the archive ourselves if it is
+ ;; part of another archive.
+ (remove-hook 'write-contents-hooks 'archive-write-file t)))
+ (run-hooks 'archive-extract-hooks)
+ (if archive-read-only
+ (message "Note: altering this archive is not implemented."))))
+ (archive-maybe-update t))
(or (not (buffer-name buffer))
(progn
(if view-p
(let ((writer (save-excursion (set-buffer archive-superior-buffer)
(archive-name "write-file-member")))
(archive (save-excursion (set-buffer archive-superior-buffer)
- (buffer-file-name))))
+ (archive-maybe-copy (buffer-file-name)))))
(if (fboundp writer)
(funcall writer archive archive-subfile-mode)
(archive-*-write-file-member archive
archive-subfile-mode
- (symbol-value writer))))
- (set-buffer-modified-p nil)
- (message "Updating archive...done")
+ (symbol-value writer)))
+ (set-buffer-modified-p nil)
+ (message "Updating archive...done"))
(set-buffer archive-superior-buffer)
- (revert-buffer)
- t)))
+ (if (not archive-remote) (revert-buffer) (archive-maybe-update nil))))
+ ;; Restore the value of last-coding-system-used, so that basic-save-buffer
+ ;; won't reset the coding-system of this archive member.
+ (if (local-variable-p 'archive-member-coding-system)
+ (setq last-coding-system-used archive-member-coding-system))
+ t)
(defun archive-*-write-file-member (archive descr command)
(let* ((ename (aref descr 0))
(unwind-protect
(progn
(make-directory (file-name-directory tmpfile) t)
- (write-region (point-min) (point-max) tmpfile nil 'nomessage)
+ ;; If the member is itself an archive, write it without
+ ;; the dired-like listing we created.
+ (if (eq major-mode 'archive-mode)
+ (archive-write-file tmpfile)
+ (write-region (point-min) (point-max) tmpfile nil 'nomessage))
+ ;; basic-save-buffer needs last-coding-system-used to have
+ ;; the value used to write the file, so save it before any
+ ;; further processing clobbers it (we restore it in
+ ;; archive-write-file-member, above).
+ (setq archive-member-coding-system last-coding-system-used)
(if (aref descr 3)
;; Set the file modes, but make sure we can read it.
(set-file-modes tmpfile (logior ?\400 (aref descr 3))))
(error "Updating was unsuccessful (%S)" exitcode))))
(archive-delete-local tmpfile))))
-(defun archive-write-file ()
+(defun archive-write-file (&optional file)
(save-excursion
- (write-region archive-proper-file-start (point-max) buffer-file-name nil t)
- (set-buffer-modified-p nil)
+ (let ((coding-system-for-write 'no-conversion))
+ (write-region archive-proper-file-start (point-max)
+ (or file buffer-file-name) nil t)
+ (set-buffer-modified-p nil))
t))
;; -------------------------------------------------------------------------
;; Section: Marking and unmarking.
(defun archive-mode-revert (&optional no-autosave no-confirm)
(let ((no (archive-get-lineno)))
(setq archive-files nil)
- (let ((revert-buffer-function nil))
+ (let ((revert-buffer-function nil)
+ (coding-system-for-read 'no-conversion))
(revert-buffer t t))
(archive-mode)
(goto-char archive-file-list-start)
(string= (file-name-nondirectory efnname) "")))
(mode (cond ((memq creator '(2 3)) ; Unix + VMS
(archive-l-e (+ p 40) 2))
- ((memq creator '(0 5 6 7 10 11)) ; Dos etc.
+ ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
(logior ?\444
(if isdir (logior 16384 ?\111) 0)
(if (zerop
(t nil)))
(modestr (if mode (archive-int-to-mode mode) "??????????"))
(fiddle (and archive-zip-case-fiddle
- (not (not (memq creator '(0 2 4 5 9))))))
+ (not (not (memq creator '(0 2 4 5 9))))
+ (string= (upcase efnname) efnname)))
(ifnname (if fiddle (downcase efnname) efnname))
(text (format " %10s %8d %-11s %-8s %s"
modestr
(goto-char (+ p 40))
(delete-char 2)
(insert (logand newval 255) (lsh newval -8)))
- ((memq creator '(0 5 6 7 10 11)) ; Dos etc.
+ ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
(goto-char (+ p 38))
(insert (logior (logand (char-after (point)) 254)
(logand (logxor 1 (lsh newval -7)) 1)))
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