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[Emacs-diffs] Changes to emacs/lisp/arc-mode.el [emacs-unicode-2]
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From: |
Kenichi Handa |
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Subject: |
[Emacs-diffs] Changes to emacs/lisp/arc-mode.el [emacs-unicode-2] |
|
Date: |
Mon, 08 Sep 2003 08:53:44 -0400 |
Index: emacs/lisp/arc-mode.el
diff -c /dev/null emacs/lisp/arc-mode.el:1.56.4.1
*** /dev/null Mon Sep 8 08:53:44 2003
--- emacs/lisp/arc-mode.el Mon Sep 8 08:53:36 2003
***************
*** 0 ****
--- 1,1820 ----
+ ;;; arc-mode.el --- simple editing of archives
+
+ ;; Copyright (C) 1995, 1997, 1998, 2003 Free Software Foundation, Inc.
+
+ ;; Author: Morten Welinder <address@hidden>
+ ;; Keywords: archives msdog editing major-mode
+ ;; Favourite-brand-of-beer: None, I hate beer.
+
+ ;; This file is part of GNU Emacs.
+
+ ;; GNU Emacs is free software; you can redistribute it and/or modify
+ ;; it under the terms of the GNU General Public License as published by
+ ;; the Free Software Foundation; either version 2, or (at your option)
+ ;; any later version.
+
+ ;; GNU Emacs is distributed in the hope that it will be useful,
+ ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ ;; GNU General Public License for more details.
+
+ ;; You should have received a copy of the GNU General Public License
+ ;; along with GNU Emacs; see the file COPYING. If not, write to the
+ ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ ;; Boston, MA 02111-1307, USA.
+
+ ;;; Commentary:
+
+ ;; NAMING: "arc" is short for "archive" and does not refer specifically
+ ;; to files whose name end in ".arc"
+ ;;
+ ;; This code does not decode any files internally, although it does
+ ;; understand the directory level of the archives. For this reason,
+ ;; you should expect this code to need more fiddling than tar-mode.el
+ ;; (although it at present has fewer bugs :-) In particular, I have
+ ;; not tested this under Ms-Dog myself.
+ ;; -------------------------------------
+ ;; INTERACTION: arc-mode.el should play together with
+ ;;
+ ;; * ange-ftp.el: Remote archives (i.e., ones that ange-ftp has brought
+ ;; to you) are handled by doing all updates on a local
+ ;; copy. When you make changes to a remote file the
+ ;; changes will first take effect when the archive buffer
+ ;; is saved. You will be warned about this.
+ ;;
+ ;; * dos-fns.el: (Part of Emacs 19). You get automatic ^M^J <--> ^J
+ ;; conversion.
+ ;;
+ ;; arc-mode.el does not work well with crypt++.el; for the archives as
+ ;; such this could be fixed (but wouldn't be useful) by declaring such
+ ;; archives to be "remote". For the members this is a general Emacs
+ ;; problem that 19.29's file formats may fix.
+ ;; -------------------------------------
+ ;; ARCHIVE TYPES: Currently only the archives below are handled, but the
+ ;; structure for handling just about anything is in place.
+ ;;
+ ;; Arc Lzh Zip Zoo
+ ;; --------------------------------
+ ;; View listing Intern Intern Intern Intern
+ ;; Extract member Y Y Y Y
+ ;; Save changed member Y Y Y Y
+ ;; Add new member N N N N
+ ;; Delete member Y Y Y Y
+ ;; Rename member Y Y N N
+ ;; Chmod - Y Y -
+ ;; Chown - Y - -
+ ;; Chgrp - Y - -
+ ;;
+ ;; Special thanks to Bill Brodie <address@hidden> for very useful tips
+ ;; on the first released version of this package.
+ ;;
+ ;; This code is partly based on tar-mode.el from Emacs.
+ ;; -------------------------------------
+ ;; ARCHIVE STRUCTURES:
+ ;; (This is mostly for myself.)
+ ;;
+ ;; ARC A series of (header,file). No interactions among members.
+ ;;
+ ;; LZH A series of (header,file). Headers are checksummed. No
+ ;; interaction among members.
+ ;; Headers come in three flavours called level 0, 1 and 2 headers.
+ ;; Level 2 header is free of DOS specific restrictions and most
+ ;; prevalently used. Also level 1 and 2 headers consist of base
+ ;; and extension headers. For more details see
+ ;;
http://homepage1.nifty.com/dangan/en/Content/Program/Java/jLHA/Notes/Notes.html
+ ;; http://www.osirusoft.com/joejared/lzhformat.html
+ ;;
+ ;; ZIP A series of (lheader,fil) followed by a "central directory"
+ ;; which is a series of (cheader) followed by an end-of-
+ ;; central-dir record possibly followed by junk. The e-o-c-d
+ ;; links to c-d. cheaders link to lheaders which are basically
+ ;; cut-down versions of the cheaders.
+ ;;
+ ;; ZOO An archive header followed by a series of (header,file).
+ ;; Each member header points to the next. The archive is
+ ;; terminated by a bogus header with a zero next link.
+ ;; -------------------------------------
+ ;; HOOKS: `foo' means one of the supported archive types.
+ ;;
+ ;; archive-mode-hook
+ ;; archive-foo-mode-hook
+ ;; archive-extract-hooks
+
+ ;;; Code:
+
+ ;; -------------------------------------------------------------------------
+ ;; Section: Configuration.
+
+ (defgroup archive nil
+ "Simple editing of archives."
+ :group 'data)
+
+ (defgroup archive-arc nil
+ "ARC-specific options to archive."
+ :group 'archive)
+
+ (defgroup archive-lzh nil
+ "LZH-specific options to archive."
+ :group 'archive)
+
+ (defgroup archive-zip nil
+ "ZIP-specific options to archive."
+ :group 'archive)
+
+ (defgroup archive-zoo nil
+ "ZOO-specific options to archive."
+ :group 'archive)
+
+ (defcustom archive-tmpdir
+ ;; make-temp-name is safe here because we use this name
+ ;; to create a directory.
+ (make-temp-name
+ (expand-file-name (if (eq system-type 'ms-dos) "ar" "archive.tmp")
+ temporary-file-directory))
+ "*Directory for temporary files made by arc-mode.el"
+ :type 'directory
+ :group 'archive)
+
+ (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.
+ A local copy of the archive will be used when updating."
+ :type 'regexp
+ :group 'archive)
+
+ (defcustom archive-extract-hooks nil
+ "*Hooks to run when an archive member has been extracted."
+ :type 'hook
+ :group 'archive)
+ ;; ------------------------------
+ ;; Arc archive configuration
+
+ ;; We always go via a local file since there seems to be no reliable way
+ ;; to extract to stdout without junk getting added.
+ (defcustom archive-arc-extract
+ '("arc" "x")
+ "*Program and its options to run in order to extract an arc file member.
+ Extraction should happen to the current directory. Archive and member
+ name will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-arc)
+
+ (defcustom archive-arc-expunge
+ '("arc" "d")
+ "*Program and its options to run in order to delete arc file members.
+ Archive and member names will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-arc)
+
+ (defcustom archive-arc-write-file-member
+ '("arc" "u")
+ "*Program and its options to run in order to update an arc file member.
+ Archive and member name will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-arc)
+ ;; ------------------------------
+ ;; Lzh archive configuration
+
+ (defcustom archive-lzh-extract
+ '("lha" "pq")
+ "*Program and its options to run in order to extract an lzh file member.
+ Extraction should happen to standard output. Archive and member name will
+ be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-lzh)
+
+ (defcustom archive-lzh-expunge
+ '("lha" "d")
+ "*Program and its options to run in order to delete lzh file members.
+ Archive and member names will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-lzh)
+
+ (defcustom archive-lzh-write-file-member
+ '("lha" "a")
+ "*Program and its options to run in order to update an lzh file member.
+ Archive and member name will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-lzh)
+ ;; ------------------------------
+ ;; Zip archive configuration
+
+ (defcustom archive-zip-extract
+ (if (locate-file "unzip" nil 'file-executable-p)
+ '("unzip" "-qq" "-c")
+ (if (locate-file "pkunzip" nil 'file-executable-p)
+ '("pkunzip" "-e" "-o-")
+ '("unzip" "-qq" "-c")))
+ "*Program and its options to run in order to extract a zip file member.
+ Extraction should happen to standard output. Archive and member name will
+ be added. If `archive-zip-use-pkzip' is non-nil then this program is
+ expected to extract to a file junking the directory part of the name."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zip)
+
+ ;; For several reasons the latter behaviour is not desirable in general.
+ ;; (1) It uses more disk space. (2) Error checking is worse or non-
+ ;; existent. (3) It tends to do funny things with other systems' file
+ ;; names.
+
+ (defcustom archive-zip-expunge
+ (if (locate-file "zip" nil 'file-executable-p)
+ '("zip" "-d" "-q")
+ (if (locate-file "pkzip" nil 'file-executable-p)
+ '("pkzip" "-d")
+ '("zip" "-d" "-q")))
+ "*Program and its options to run in order to delete zip file members.
+ Archive and member names will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zip)
+
+ (defcustom archive-zip-update
+ (if (locate-file "zip" nil 'file-executable-p)
+ '("zip" "-q")
+ (if (locate-file "pkzip" nil 'file-executable-p)
+ '("pkzip" "-u" "-P")
+ '("zip" "-q")))
+ "*Program and its options to run in order to update a zip file member.
+ Options should ensure that specified directory will be put into the zip
+ file. Archive and member name will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zip)
+
+ (defcustom archive-zip-update-case
+ (if (locate-file "zip" nil 'file-executable-p)
+ '("zip" "-q" "-k")
+ (if (locate-file "pkzip" nil 'file-executable-p)
+ '("pkzip" "-u" "-P")
+ '("zip" "-q" "-k")))
+ "*Program and its options to run in order to update a case fiddled zip
member.
+ Options should ensure that specified directory will be put into the zip file.
+ Archive and member name will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zip)
+
+ (defcustom archive-zip-case-fiddle t
+ "*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)
+ ;; ------------------------------
+ ;; Zoo archive configuration
+
+ (defcustom archive-zoo-extract
+ '("zoo" "xpq")
+ "*Program and its options to run in order to extract a zoo file member.
+ Extraction should happen to standard output. Archive and member name will
+ be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zoo)
+
+ (defcustom archive-zoo-expunge
+ '("zoo" "DqPP")
+ "*Program and its options to run in order to delete zoo file members.
+ Archive and member names will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zoo)
+
+ (defcustom archive-zoo-write-file-member
+ '("zoo" "a")
+ "*Program and its options to run in order to update a zoo file member.
+ Archive and member name will be added."
+ :type '(list (string :tag "Program")
+ (repeat :tag "Options"
+ :inline t
+ (string :format "%v")))
+ :group 'archive-zoo)
+ ;; -------------------------------------------------------------------------
+ ;; Section: Variables
+
+ (defvar archive-subtype nil "Symbol describing archive type.")
+ (defvar archive-file-list-start nil "Position of first contents line.")
+ (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-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)
+ (put 'archive-alternate-display 'permanent-local t)
+
+ (defvar archive-superior-buffer nil "In archive members, points to archive.")
+ (put 'archive-superior-buffer 'permanent-local t)
+
+ (defvar archive-subfile-mode nil "Non-nil in archive member buffers.")
+ (make-variable-buffer-local 'archive-subfile-mode)
+ (put 'archive-subfile-mode 'permanent-local t)
+
+ (defvar archive-file-name-coding-system nil)
+ (make-variable-buffer-local 'archive-file-name-coding-system)
+ (put 'archive-file-name-coding-system 'permanent-local t)
+
+ (defvar archive-files nil
+ "Vector of file descriptors.
+ Each descriptor is a vector of the form
+ [EXT-FILE-NAME INT-FILE-NAME CASE-FIDDLED MODE ...]")
+ (make-variable-buffer-local 'archive-files)
+
+ (defvar archive-lemacs
+ (string-match "\\(Lucid\\|Xemacs\\)" emacs-version)
+ "*Non-nil when running under under Lucid Emacs or Xemacs.")
+ ;; -------------------------------------------------------------------------
+ ;; Section: Support functions.
+
+ (eval-when-compile
+ (defsubst byte-after (pos)
+ "Like char-after but an eight-bit char is converted to unibyte."
+ (multibyte-char-to-unibyte (char-after pos)))
+ (defsubst insert-unibyte (&rest args)
+ "Like insert but don't make unibyte string and eight-bit char multibyte."
+ (dolist (elt args)
+ (if (integerp elt)
+ (insert (if (< elt 128) elt (decode-char 'eight-bit elt)))
+ (insert (string-to-multibyte elt)))))
+ )
+
+ (defsubst archive-name (suffix)
+ (intern (concat "archive-" (symbol-name archive-subtype) "-" suffix)))
+
+ (defun archive-l-e (str &optional len)
+ "Convert little endian string/vector to integer.
+ Alternatively, first argument may be a buffer position in the current buffer
+ in which case a second argument, length, should be supplied."
+ (if (stringp str)
+ (setq len (length str))
+ (setq str (buffer-substring str (+ str len))))
+ (setq str (string-as-unibyte str))
+ (let ((result 0)
+ (i 0))
+ (while (< i len)
+ (setq i (1+ i)
+ result (+ (ash result 8) (aref str (- len i)))))
+ result))
+
+ (defun archive-int-to-mode (mode)
+ "Turn an integer like 0700 (i.e., 448) into a mode string like -rwx------."
+ ;; FIXME: merge with tar-grind-file-mode.
+ (string
+ (if (zerop (logand 8192 mode))
+ (if (zerop (logand 16384 mode)) ?- ?d)
+ ?c) ; completeness
+ (if (zerop (logand 256 mode)) ?- ?r)
+ (if (zerop (logand 128 mode)) ?- ?w)
+ (if (zerop (logand 64 mode))
+ (if (zerop (logand 1024 mode)) ?- ?S)
+ (if (zerop (logand 1024 mode)) ?x ?s))
+ (if (zerop (logand 32 mode)) ?- ?r)
+ (if (zerop (logand 16 mode)) ?- ?w)
+ (if (zerop (logand 8 mode))
+ (if (zerop (logand 2048 mode)) ?- ?S)
+ (if (zerop (logand 2048 mode)) ?x ?s))
+ (if (zerop (logand 4 mode)) ?- ?r)
+ (if (zerop (logand 2 mode)) ?- ?w)
+ (if (zerop (logand 1 mode)) ?- ?x)))
+
+ (defun archive-calc-mode (oldmode newmode &optional error)
+ "From the integer OLDMODE and the string NEWMODE calculate a new file mode.
+ NEWMODE may be an octal number including a leading zero in which case it
+ will become the new mode.\n
+ NEWMODE may also be a relative specification like \"og-rwx\" in which case
+ OLDMODE will be modified accordingly just like chmod(2) would have done.\n
+ If optional third argument ERROR is non-nil an error will be signaled if
+ the mode is invalid. If ERROR is nil then nil will be returned."
+ (cond ((string-match "^0[0-7]*$" newmode)
+ (let ((result 0)
+ (len (length newmode))
+ (i 1))
+ (while (< i len)
+ (setq result (+ (lsh result 3) (aref newmode i) (- ?0))
+ i (1+ i)))
+ (logior (logand oldmode 65024) result)))
+ ((string-match "^\\([agou]+\\)\\([---+=]\\)\\([rwxst]+\\)$" newmode)
+ (let ((who 0)
+ (result oldmode)
+ (op (aref newmode (match-beginning 2)))
+ (bits 0)
+ (i (match-beginning 3)))
+ (while (< i (match-end 3))
+ (let ((rwx (aref newmode i)))
+ (setq bits (logior bits (cond ((= rwx ?r) 292)
+ ((= rwx ?w) 146)
+ ((= rwx ?x) 73)
+ ((= rwx ?s) 3072)
+ ((= rwx ?t) 512)))
+ i (1+ i))))
+ (while (< who (match-end 1))
+ (let* ((whoc (aref newmode who))
+ (whomask (cond ((= whoc ?a) 4095)
+ ((= whoc ?u) 1472)
+ ((= whoc ?g) 2104)
+ ((= whoc ?o) 7))))
+ (if (= op ?=)
+ (setq result (logand result (lognot whomask))))
+ (if (= op ?-)
+ (setq result (logand result (lognot (logand whomask bits))))
+ (setq result (logior result (logand whomask bits)))))
+ (setq who (1+ who)))
+ result))
+ (t
+ (if error
+ (error "Invalid mode specification: %s" newmode)))))
+
+ (defun archive-dosdate (date)
+ "Stringify dos packed DATE record."
+ (let ((year (+ 1980 (logand (ash date -9) 127)))
+ (month (logand (ash date -5) 15))
+ (day (logand date 31)))
+ (if (or (> month 12) (< month 1))
+ ""
+ (format "%2d-%s-%d"
+ day
+ (aref ["Jan" "Feb" "Mar" "Apr" "May" "Jun"
+ "Jul" "Aug" "Sep" "Oct" "Nov" "Dec"] (1- month))
+ year))))
+
+ (defun archive-dostime (time)
+ "Stringify dos packed TIME record."
+ (let ((hour (logand (ash time -11) 31))
+ (minute (logand (ash time -5) 63))
+ (second (* 2 (logand time 31)))) ; 2 seconds resolution
+ (format "%02d:%02d:%02d" hour minute second)))
+
+ (defun archive-unixdate (low high)
+ "Stringify unix (LOW HIGH) date."
+ (let ((str (current-time-string (cons high low))))
+ (format "%s-%s-%s"
+ (substring str 8 10)
+ (substring str 4 7)
+ (substring str 20 24))))
+
+ (defun archive-unixtime (low high)
+ "Stringify unix (LOW HIGH) time."
+ (let ((str (current-time-string (cons high low))))
+ (substring str 11 19)))
+
+ (defun archive-get-lineno ()
+ (if (>= (point) archive-file-list-start)
+ (count-lines archive-file-list-start
+ (save-excursion (beginning-of-line) (point)))
+ 0))
+
+ (defun archive-get-descr (&optional noerror)
+ "Return the descriptor vector for file at point.
+ Does not signal an error if optional second argument NOERROR is non-nil."
+ (let ((no (archive-get-lineno)))
+ (if (and (>= (point) archive-file-list-start)
+ (< no (length archive-files)))
+ (let ((item (aref archive-files no)))
+ (if (vectorp item)
+ item
+ (if (not noerror)
+ (error "Entry is not a regular member of the archive"))))
+ (if (not noerror)
+ (error "Line does not describe a member of the archive")))))
+ ;; -------------------------------------------------------------------------
+ ;; Section: the mode definition
+
+ ;;;###autoload
+ (defun archive-mode (&optional force)
+ "Major mode for viewing an archive file in a dired-like way.
+ You can move around using the usual cursor motion commands.
+ Letters no longer insert themselves.
+ Type `e' to pull a file out of the archive and into its own buffer;
+ or click mouse-2 on the file's line in the archive mode buffer.
+
+ If you edit a sub-file of this archive (as with the `e' command) and
+ save it, the contents of that buffer will be saved back into the
+ archive.
+
+ \\{archive-mode-map}"
+ ;; This is not interactive because you shouldn't be turning this
+ ;; mode on and off. You can corrupt things that way.
+ (if (zerop (buffer-size))
+ ;; At present we cannot create archives from scratch
+ (funcall default-major-mode)
+ (if (and (not force) archive-files) nil
+ (let* ((type (archive-find-type))
+ (typename (capitalize (symbol-name type))))
+ (kill-all-local-variables)
+ (make-local-variable 'archive-subtype)
+ (setq archive-subtype type)
+
+ ;; Buffer contains treated image of file before the file contents
+ (make-local-variable 'revert-buffer-function)
+ (setq revert-buffer-function 'archive-mode-revert)
+ (auto-save-mode 0)
+
+ ;; 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 'local-enable-local-variables)
+ (setq local-enable-local-variables nil)
+
+ ;; Prevent loss of data when saving the file.
+ (make-local-variable 'file-precious-flag)
+ (setq file-precious-flag t)
+
+ (make-local-variable 'archive-read-only)
+ ;; 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 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)
+
+ ;; 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 file-name-invalid-regexp
+ (buffer-file-name)))))
+
+ (setq major-mode 'archive-mode)
+ (setq mode-name (concat typename "-Archive"))
+ ;; Run archive-foo-mode-hook and archive-mode-hook
+ (run-hooks (archive-name "mode-hook") 'archive-mode-hook)
+ (use-local-map archive-mode-map))
+
+ (make-local-variable 'archive-proper-file-start)
+ (make-local-variable 'archive-file-list-start)
+ (make-local-variable 'archive-file-list-end)
+ (make-local-variable 'archive-file-name-indent)
+ (setq archive-file-name-coding-system
+ (or file-name-coding-system
+ default-file-name-coding-system
+ locale-coding-system))
+ (if default-enable-multibyte-characters
+ (set-buffer-multibyte 'to))
+ (archive-summarize nil)
+ (setq buffer-read-only t))))
+
+ ;; Archive mode is suitable only for specially formatted data.
+ (put 'archive-mode 'mode-class 'special)
+ ;; -------------------------------------------------------------------------
+ ;; Section: Key maps
+
+ (if archive-mode-map nil
+ (setq archive-mode-map (make-keymap))
+ (suppress-keymap archive-mode-map)
+ (define-key archive-mode-map " " 'archive-next-line)
+ (define-key archive-mode-map "a" 'archive-alternate-display)
+ ;;(define-key archive-mode-map "c" 'archive-copy)
+ (define-key archive-mode-map "d" 'archive-flag-deleted)
+ (define-key archive-mode-map "\C-d" 'archive-flag-deleted)
+ (define-key archive-mode-map "e" 'archive-extract)
+ (define-key archive-mode-map "f" 'archive-extract)
+ (define-key archive-mode-map "\C-m" 'archive-extract)
+ (define-key archive-mode-map "g" 'revert-buffer)
+ (define-key archive-mode-map "h" 'describe-mode)
+ (define-key archive-mode-map "m" 'archive-mark)
+ (define-key archive-mode-map "n" 'archive-next-line)
+ (define-key archive-mode-map "\C-n" 'archive-next-line)
+ (define-key archive-mode-map [down] 'archive-next-line)
+ (define-key archive-mode-map "o" 'archive-extract-other-window)
+ (define-key archive-mode-map "p" 'archive-previous-line)
+ (define-key archive-mode-map "q" 'quit-window)
+ (define-key archive-mode-map "\C-p" 'archive-previous-line)
+ (define-key archive-mode-map [up] 'archive-previous-line)
+ (define-key archive-mode-map "r" 'archive-rename-entry)
+ (define-key archive-mode-map "u" 'archive-unflag)
+ (define-key archive-mode-map "\M-\C-?" 'archive-unmark-all-files)
+ (define-key archive-mode-map "v" 'archive-view)
+ (define-key archive-mode-map "x" 'archive-expunge)
+ (define-key archive-mode-map "\177" 'archive-unflag-backwards)
+ (define-key archive-mode-map "E" 'archive-extract-other-window)
+ (define-key archive-mode-map "M" 'archive-chmod-entry)
+ (define-key archive-mode-map "G" 'archive-chgrp-entry)
+ (define-key archive-mode-map "O" 'archive-chown-entry)
+
+ (if archive-lemacs
+ (progn
+ ;; Not a nice "solution" but it'll have to do
+ (define-key archive-mode-map "\C-xu" 'archive-undo)
+ (define-key archive-mode-map "\C-_" 'archive-undo))
+ (define-key archive-mode-map [remap advertised-undo] 'archive-undo)
+ (define-key archive-mode-map [remap undo] 'archive-undo))
+
+ (define-key archive-mode-map
+ (if archive-lemacs 'button2 [mouse-2]) 'archive-mouse-extract)
+
+ (if archive-lemacs
+ () ; out of luck
+
+ (define-key archive-mode-map [menu-bar immediate]
+ (cons "Immediate" (make-sparse-keymap "Immediate")))
+ (define-key archive-mode-map [menu-bar immediate alternate]
+ '(menu-item "Alternate Display" archive-alternate-display
+ :enable (boundp (archive-name "alternate-display"))
+ :help "Toggle alternate file info display"))
+ (define-key archive-mode-map [menu-bar immediate view]
+ '(menu-item "View This File" archive-view
+ :help "Display file at cursor in View Mode"))
+ (define-key archive-mode-map [menu-bar immediate display]
+ '(menu-item "Display in Other Window" archive-display-other-window
+ :help "Display file at cursor in another window"))
+ (define-key archive-mode-map [menu-bar immediate find-file-other-window]
+ '(menu-item "Find in Other Window" archive-extract-other-window
+ :help "Edit file at cursor in another window"))
+ (define-key archive-mode-map [menu-bar immediate find-file]
+ '(menu-item "Find This File" archive-extract
+ :help "Extract file at cursor and edit it"))
+
+ (define-key archive-mode-map [menu-bar mark]
+ (cons "Mark" (make-sparse-keymap "Mark")))
+ (define-key archive-mode-map [menu-bar mark unmark-all]
+ '(menu-item "Unmark All" archive-unmark-all-files
+ :help "Unmark all marked files"))
+ (define-key archive-mode-map [menu-bar mark deletion]
+ '(menu-item "Flag" archive-flag-deleted
+ :help "Flag file at cursor for deletion"))
+ (define-key archive-mode-map [menu-bar mark unmark]
+ '(menu-item "Unflag" archive-unflag
+ :help "Unmark file at cursor"))
+ (define-key archive-mode-map [menu-bar mark mark]
+ '(menu-item "Mark" archive-mark
+ :help "Mark file at cursor"))
+
+ (define-key archive-mode-map [menu-bar operate]
+ (cons "Operate" (make-sparse-keymap "Operate")))
+ (define-key archive-mode-map [menu-bar operate chown]
+ '(menu-item "Change Owner..." archive-chown-entry
+ :enable (fboundp (archive-name "chown-entry"))
+ :help "Change owner of marked files"))
+ (define-key archive-mode-map [menu-bar operate chgrp]
+ '(menu-item "Change Group..." archive-chgrp-entry
+ :enable (fboundp (archive-name "chgrp-entry"))
+ :help "Change group ownership of marked files"))
+ (define-key archive-mode-map [menu-bar operate chmod]
+ '(menu-item "Change Mode..." archive-chmod-entry
+ :enable (fboundp (archive-name "chmod-entry"))
+ :help "Change mode (permissions) of marked files"))
+ (define-key archive-mode-map [menu-bar operate rename]
+ '(menu-item "Rename to..." archive-rename-entry
+ :enable (fboundp (archive-name "rename-entry"))
+ :help "Rename marked files"))
+ ;;(define-key archive-mode-map [menu-bar operate copy]
+ ;; '(menu-item "Copy to..." archive-copy))
+ (define-key archive-mode-map [menu-bar operate expunge]
+ '(menu-item "Expunge Marked Files" archive-expunge
+ :help "Delete all flagged files from archive"))
+ ))
+
+ (let* ((item1 '(archive-subfile-mode " Archive"))
+ (items (list item1)))
+ (or (member item1 minor-mode-alist)
+ (setq minor-mode-alist (append items minor-mode-alist))))
+ ;; -------------------------------------------------------------------------
+ (defun archive-find-type ()
+ (widen)
+ (goto-char (point-min))
+ ;; The funny [] here make it unlikely that the .elc file will be treated
+ ;; as an archive by other software.
+ (let (case-fold-search)
+ (cond ((looking-at "[P]K\003\004") 'zip)
+ ((looking-at "..-l[hz][0-9ds]-") 'lzh)
+ ((looking-at "....................[\334]\247\304\375") 'zoo)
+ ((and (looking-at "\C-z") ; signature too simple, IMHO
+ (string-match "\\.[aA][rR][cC]$"
+ (or buffer-file-name (buffer-name))))
+ 'arc)
+ (t (error "Buffer format not recognized")))))
+ ;; -------------------------------------------------------------------------
+ (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).
+ Optional argument SHUT-UP, if non-nil, means don't print messages
+ when parsing the archive."
+ (widen)
+ (let (buffer-read-only)
+ (or shut-up
+ (message "Parsing archive file..."))
+ (buffer-disable-undo (current-buffer))
+ (setq archive-files (funcall (archive-name "summarize")))
+ (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-enable-undo))
+ (goto-char archive-file-list-start)
+ (archive-next-line 0))
+
+ (defun archive-resummarize ()
+ "Recreate the contents listing of an archive."
+ (let ((modified (buffer-modified-p))
+ (no (archive-get-lineno))
+ buffer-read-only)
+ (widen)
+ (delete-region (point-min) archive-proper-file-start)
+ (archive-summarize t)
+ (set-buffer-modified-p modified)
+ (goto-char archive-file-list-start)
+ (archive-next-line no)))
+
+ (defun archive-summarize-files (files)
+ "Insert a description of a list of files annotated with proper mouse face."
+ (setq archive-file-list-start (point-marker))
+ (setq archive-file-name-indent (if files (aref (car files) 1) 0))
+ ;; We don't want to do an insert for each element since that takes too
+ ;; long when the archive -- which has to be moved in memory -- is large.
+ (insert
+ (apply
+ (function concat)
+ (mapcar
+ (function
+ (lambda (fil)
+ ;; Using `concat' here copies the text also, so we can add
+ ;; properties without problems.
+ (let ((text (concat (aref fil 0) "\n")))
+ (if archive-lemacs
+ () ; out of luck
+ (add-text-properties
+ (aref fil 1) (aref fil 2)
+ '(mouse-face highlight
+ help-echo "mouse-2: extract this file into a buffer")
+ text))
+ text)))
+ files)))
+ (setq archive-file-list-end (point-marker)))
+
+ (defun archive-alternate-display ()
+ "Toggle alternative display.
+ To avoid very long lines some archive mode don't show all information.
+ This function changes the set of information shown for each files."
+ (interactive)
+ (setq archive-alternate-display (not archive-alternate-display))
+ (archive-resummarize))
+ ;; -------------------------------------------------------------------------
+ ;; 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-file', and the generated name is returned."
+ (let ((fullname (expand-file-name fname dir))
+ (alien (string-match file-name-invalid-regexp fname)))
+ (if (or alien (file-exists-p fullname))
+ (make-temp-file
+ (expand-file-name
+ (if (if (fboundp 'msdos-long-file-names)
+ (not (msdos-long-file-names)))
+ "am"
+ "arc-mode.")
+ dir))
+ fullname)))
+
+ (defun archive-maybe-copy (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)
+ (goto-char archive-file-list-start)
+ (archive-next-line lno))
+ (archive-delete-local name)
+ (if (not unchanged)
+ (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)
+ "Delete file NAME and its parents up to and including `archive-tmpdir'."
+ (let ((again t)
+ (top (directory-file-name (file-name-as-directory archive-tmpdir))))
+ (condition-case nil
+ (delete-file name)
+ (error nil))
+ (while again
+ (setq name (directory-file-name (file-name-directory name)))
+ (condition-case nil
+ (delete-directory name)
+ (error nil))
+ (if (string= name top) (setq again nil)))))
+ ;; -------------------------------------------------------------------------
+ ;; Section: Member extraction
+
+ (defun archive-file-name-handler (op &rest args)
+ (or (eq op 'file-exists-p)
+ (let ((file-name-handler-alist nil))
+ (apply op args))))
+
+ (defun archive-set-buffer-as-visiting-file (filename)
+ "Set the current buffer as if it were visiting FILENAME."
+ (save-excursion
+ (goto-char (point-min))
+ (let ((coding
+ (or coding-system-for-read
+ (and set-auto-coding-function
+ (save-excursion
+ (funcall set-auto-coding-function
+ filename (- (point-max) (point-min)))))
+ ;; dos-w32.el defines find-operation-coding-system for
+ ;; DOS/Windows systems which preserves the coding-system
+ ;; of existing files. We want it to act here as if the
+ ;; extracted file existed.
+ (let ((file-name-handler-alist
+ '(("" . archive-file-name-handler))))
+ (car (find-operation-coding-system 'insert-file-contents
+ filename t))))))
+ (if (and (not coding-system-for-read)
+ (not enable-multibyte-characters))
+ (setq coding
+ (coding-system-change-text-conversion coding 'raw-text)))
+ (if (and coding
+ (not (eq coding 'no-conversion)))
+ (decode-coding-region (point-min) (point-max) coding)
+ (setq last-coding-system-used coding))
+ (set-buffer-modified-p nil)
+ (kill-local-variable 'buffer-file-coding-system)
+ (after-insert-file-set-coding (- (point-max) (point-min))))))
+
+ (defun archive-mouse-extract (event)
+ "Extract a file whose name you click on."
+ (interactive "e")
+ (mouse-set-point event)
+ (switch-to-buffer
+ (save-excursion
+ (archive-extract)
+ (current-buffer))))
+
+ (defun archive-extract (&optional other-window-p)
+ "In archive mode, extract this entry of the archive into its own buffer."
+ (interactive)
+ (let* ((view-p (eq other-window-p 'view))
+ (descr (archive-get-descr))
+ (ename (aref descr 0))
+ (iname (aref descr 1))
+ (archive-buffer (current-buffer))
+ (arcdir default-directory)
+ (archive (buffer-file-name))
+ (arcname (file-name-nondirectory archive))
+ (bufname (concat (file-name-nondirectory iname) " (" arcname ")"))
+ (extractor (archive-name "extract"))
+ ;; 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 file-name-invalid-regexp ename)))
+ (buffer (get-buffer bufname))
+ (just-created nil)
+ (file-name-coding archive-file-name-coding-system))
+ (if buffer
+ nil
+ (setq archive (archive-maybe-copy archive))
+ (setq buffer (get-buffer-create bufname))
+ (setq just-created t)
+ (save-excursion
+ (set-buffer buffer)
+ (setq buffer-file-name
+ (expand-file-name (concat arcname ":" iname)))
+ (setq buffer-file-truename
+ (abbreviate-file-name buffer-file-name))
+ ;; Set the default-directory to the dir of the superior buffer.
+ (setq default-directory arcdir)
+ (make-local-variable 'archive-superior-buffer)
+ (setq archive-superior-buffer archive-buffer)
+ (make-local-variable 'local-write-file-hooks)
+ (add-hook 'local-write-file-hooks 'archive-write-file-member)
+ (setq archive-subfile-mode descr)
+ (setq archive-file-name-coding-system file-name-coding)
+ (if (and
+ (null
+ (let (;; We may have to encode file name arguement for
+ ;; external programs.
+ (coding-system-for-write
+ (and enable-multibyte-characters
+ archive-file-name-coding-system))
+ ;; We read an archive member by no-conversion at
+ ;; first, then decode appropriately by calling
+ ;; archive-set-buffer-as-visiting-file later.
+ (coding-system-for-read 'no-conversion))
+ (condition-case err
+ (if (fboundp extractor)
+ (funcall extractor archive ename)
+ (archive-*-extract archive ename
+ (symbol-value extractor)))
+ (error
+ (ding (message "%s" (error-message-string err)))
+ nil))))
+ just-created)
+ (progn
+ (set-buffer-modified-p nil)
+ (kill-buffer buffer))
+ (archive-set-buffer-as-visiting-file ename)
+ (goto-char (point-min))
+ (rename-buffer bufname)
+ (setq buffer-read-only read-only-p)
+ (setq buffer-undo-list nil)
+ (set-buffer-modified-p nil)
+ (setq buffer-saved-size (buffer-size))
+ (normal-mode)
+ ;; Just in case an archive occurs inside another archive.
+ (if (eq major-mode 'archive-mode)
+ (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
+ (view-buffer buffer (and just-created 'kill-buffer))
+ (if (eq other-window-p 'display)
+ (display-buffer buffer)
+ (if other-window-p
+ (switch-to-buffer-other-window buffer)
+ (switch-to-buffer buffer))))))))
+
+ (defun archive-*-extract (archive name command)
+ (let* ((default-directory (file-name-as-directory archive-tmpdir))
+ (tmpfile (expand-file-name (file-name-nondirectory name)
+ default-directory))
+ exit-status success)
+ (make-directory (directory-file-name default-directory) t)
+ (setq exit-status
+ (apply 'call-process
+ (car command)
+ nil
+ nil
+ nil
+ (append (cdr command) (list archive name))))
+ (cond ((and (numberp exit-status) (= exit-status 0))
+ (if (not (file-exists-p tmpfile))
+ (ding (message "`%s': no such file or directory" tmpfile))
+ (insert-file-contents tmpfile)
+ (setq success t)))
+ ((numberp exit-status)
+ (ding
+ (message "`%s' exited with status %d" (car command) exit-status)))
+ ((stringp exit-status)
+ (ding (message "`%s' aborted: %s" (car command) exit-status)))
+ (t
+ (ding (message "`%s' failed" (car command)))))
+ (archive-delete-local tmpfile)
+ success))
+
+ (defun archive-extract-by-stdout (archive name command)
+ (apply 'call-process
+ (car command)
+ nil
+ t
+ nil
+ (append (cdr command) (list archive name))))
+
+ (defun archive-extract-other-window ()
+ "In archive mode, find this member in another window."
+ (interactive)
+ (archive-extract t))
+
+ (defun archive-display-other-window ()
+ "In archive mode, display this member in another window."
+ (interactive)
+ (archive-extract 'display))
+
+ (defun archive-view ()
+ "In archive mode, view the member on this line."
+ (interactive)
+ (archive-extract 'view))
+
+ (defun archive-add-new-member (arcbuf name)
+ "Add current buffer to the archive in ARCBUF naming it NAME."
+ (interactive
+ (list (get-buffer
+ (read-buffer "Buffer containing archive: "
+ ;; Find first archive buffer and suggest that
+ (let ((bufs (buffer-list)))
+ (while (and bufs (not (eq (save-excursion
+ (set-buffer (car bufs))
+ major-mode)
+ 'archive-mode)))
+ (setq bufs (cdr bufs)))
+ (if bufs
+ (car bufs)
+ (error "There are no archive buffers")))
+ t))
+ (read-string "File name in archive: "
+ (if buffer-file-name
+ (file-name-nondirectory buffer-file-name)
+ ""))))
+ (save-excursion
+ (set-buffer arcbuf)
+ (or (eq major-mode 'archive-mode)
+ (error "Buffer is not an archive buffer"))
+ (if archive-read-only
+ (error "Archive is read-only")))
+ (if (eq arcbuf (current-buffer))
+ (error "An archive buffer cannot be added to itself"))
+ (if (string= name "")
+ (error "Archive members may not be given empty names"))
+ (let ((func (save-excursion (set-buffer arcbuf)
+ (archive-name "add-new-member")))
+ (membuf (current-buffer)))
+ (if (fboundp func)
+ (save-excursion
+ (set-buffer arcbuf)
+ (funcall func buffer-file-name membuf name))
+ (error "Adding a new member is not supported for this archive type"))))
+ ;; -------------------------------------------------------------------------
+ ;; Section: IO stuff
+
+ (defun archive-write-file-member ()
+ (save-excursion
+ (save-restriction
+ (message "Updating archive...")
+ (widen)
+ (let ((writer (save-excursion (set-buffer archive-superior-buffer)
+ (archive-name "write-file-member")))
+ (archive (save-excursion (set-buffer archive-superior-buffer)
+ (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"))
+ (set-buffer archive-superior-buffer)
+ (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))
+ (tmpfile (expand-file-name ename archive-tmpdir))
+ (top (directory-file-name (file-name-as-directory archive-tmpdir)))
+ (default-directory (file-name-as-directory top)))
+ (unwind-protect
+ (progn
+ (make-directory (file-name-directory tmpfile) t)
+ ;; 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))))
+ (setq ename
+ (encode-coding-string ename archive-file-name-coding-system))
+ (let* ((coding-system-for-write 'no-conversion)
+ (exitcode (apply 'call-process
+ (car command)
+ nil
+ nil
+ nil
+ (append (cdr command)
+ (list archive ename)))))
+ (if (equal exitcode 0)
+ nil
+ (error "Updating was unsuccessful (%S)" exitcode))))
+ (archive-delete-local tmpfile))))
+
+ (defun archive-write-file (&optional file)
+ (save-excursion
+ (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-flag-deleted (p &optional type)
+ "In archive mode, mark this member to be deleted from the archive.
+ With a prefix argument, mark that many files."
+ (interactive "p")
+ (or type (setq type ?D))
+ (beginning-of-line)
+ (let ((sign (if (>= p 0) +1 -1))
+ (modified (buffer-modified-p))
+ buffer-read-only)
+ (while (not (zerop p))
+ (if (archive-get-descr t)
+ (progn
+ (delete-char 1)
+ (insert type)))
+ (forward-line sign)
+ (setq p (- p sign)))
+ (set-buffer-modified-p modified))
+ (archive-next-line 0))
+
+ (defun archive-unflag (p)
+ "In archive mode, un-mark this member if it is marked to be deleted.
+ With a prefix argument, un-mark that many files forward."
+ (interactive "p")
+ (archive-flag-deleted p ? ))
+
+ (defun archive-unflag-backwards (p)
+ "In archive mode, un-mark this member if it is marked to be deleted.
+ With a prefix argument, un-mark that many members backward."
+ (interactive "p")
+ (archive-flag-deleted (- p) ? ))
+
+ (defun archive-unmark-all-files ()
+ "Remove all marks."
+ (interactive)
+ (let ((modified (buffer-modified-p))
+ buffer-read-only)
+ (save-excursion
+ (goto-char archive-file-list-start)
+ (while (< (point) archive-file-list-end)
+ (or (= (following-char) ? )
+ (progn (delete-char 1) (insert ? )))
+ (forward-line 1)))
+ (set-buffer-modified-p modified)))
+
+ (defun archive-mark (p)
+ "In archive mode, mark this member for group operations.
+ With a prefix argument, mark that many members.
+ Use \\[archive-unmark-all-files] to remove all marks."
+ (interactive "p")
+ (archive-flag-deleted p ?*))
+
+ (defun archive-get-marked (mark &optional default)
+ (let (files)
+ (save-excursion
+ (goto-char archive-file-list-start)
+ (while (< (point) archive-file-list-end)
+ (if (= (following-char) mark)
+ (setq files (cons (archive-get-descr) files)))
+ (forward-line 1)))
+ (or (nreverse files)
+ (and default
+ (list (archive-get-descr))))))
+ ;; -------------------------------------------------------------------------
+ ;; Section: Operate
+
+ (defun archive-next-line (p)
+ (interactive "p")
+ (forward-line p)
+ (or (eobp)
+ (forward-char archive-file-name-indent)))
+
+ (defun archive-previous-line (p)
+ (interactive "p")
+ (archive-next-line (- p)))
+
+ (defun archive-chmod-entry (new-mode)
+ "Change the protection bits associated with all marked or this member.
+ The new protection bits can either be specified as an octal number or
+ as a relative change like \"g+rw\" as for chmod(2)"
+ (interactive "sNew mode (octal or relative): ")
+ (if archive-read-only (error "Archive is read-only"))
+ (let ((func (archive-name "chmod-entry")))
+ (if (fboundp func)
+ (progn
+ (funcall func new-mode (archive-get-marked ?* t))
+ (archive-resummarize))
+ (error "Setting mode bits is not supported for this archive type"))))
+
+ (defun archive-chown-entry (new-uid)
+ "Change the owner of all marked or this member."
+ (interactive "nNew uid: ")
+ (if archive-read-only (error "Archive is read-only"))
+ (let ((func (archive-name "chown-entry")))
+ (if (fboundp func)
+ (progn
+ (funcall func new-uid (archive-get-marked ?* t))
+ (archive-resummarize))
+ (error "Setting owner is not supported for this archive type"))))
+
+ (defun archive-chgrp-entry (new-gid)
+ "Change the group of all marked or this member."
+ (interactive "nNew gid: ")
+ (if archive-read-only (error "Archive is read-only"))
+ (let ((func (archive-name "chgrp-entry")))
+ (if (fboundp func)
+ (progn
+ (funcall func new-gid (archive-get-marked ?* t))
+ (archive-resummarize))
+ (error "Setting group is not supported for this archive type"))))
+
+ (defun archive-expunge ()
+ "Do the flagged deletions."
+ (interactive)
+ (let (files)
+ (save-excursion
+ (goto-char archive-file-list-start)
+ (while (< (point) archive-file-list-end)
+ (if (= (following-char) ?D)
+ (setq files (cons (aref (archive-get-descr) 0) files)))
+ (forward-line 1)))
+ (setq files (nreverse files))
+ (and files
+ (or (not archive-read-only)
+ (error "Archive is read-only"))
+ (or (yes-or-no-p (format "Really delete %d member%s? "
+ (length files)
+ (if (null (cdr files)) "" "s")))
+ (error "Operation aborted"))
+ (let ((archive (archive-maybe-copy (buffer-file-name)))
+ (expunger (archive-name "expunge")))
+ (if (fboundp expunger)
+ (funcall expunger archive files)
+ (archive-*-expunge archive files (symbol-value expunger)))
+ (archive-maybe-update nil)
+ (if archive-remote
+ (archive-resummarize)
+ (revert-buffer))))))
+
+ (defun archive-*-expunge (archive files command)
+ (apply 'call-process
+ (car command)
+ nil
+ nil
+ nil
+ (append (cdr command) (cons archive files))))
+
+ (defun archive-rename-entry (newname)
+ "Change the name associated with this entry in the tar file."
+ (interactive "sNew name: ")
+ (if archive-read-only (error "Archive is read-only"))
+ (if (string= newname "")
+ (error "Archive members may not be given empty names"))
+ (let ((func (archive-name "rename-entry"))
+ (descr (archive-get-descr)))
+ (if (fboundp func)
+ (progn
+ (funcall func (buffer-file-name)
+ (encode-coding-string newname
+ archive-file-name-coding-system)
+ descr)
+ (archive-resummarize))
+ (error "Renaming is not supported for this archive type"))))
+
+ ;; Revert the buffer and recompute the dired-like listing.
+ (defun archive-mode-revert (&optional no-auto-save no-confirm)
+ (let ((no (archive-get-lineno)))
+ (setq archive-files nil)
+ (let ((revert-buffer-function nil)
+ (coding-system-for-read 'no-conversion))
+ (revert-buffer t t))
+ (archive-mode)
+ (goto-char archive-file-list-start)
+ (archive-next-line no)))
+
+ (defun archive-undo ()
+ "Undo in an archive buffer.
+ This doesn't recover lost files, it just undoes changes in the buffer itself."
+ (interactive)
+ (let (buffer-read-only)
+ (undo)))
+ ;; -------------------------------------------------------------------------
+ ;; Section: Arc Archives
+
+ (defun archive-arc-summarize ()
+ (let ((p 1)
+ (totalsize 0)
+ (maxlen 8)
+ files
+ visual)
+ (while (and (< (+ p 29) (point-max))
+ (= (byte-after p) ?\C-z)
+ (> (byte-after (1+ p)) 0))
+ (let* ((namefld (buffer-substring (+ p 2) (+ p 2 13)))
+ (fnlen (or (string-match "\0" namefld) 13))
+ (efnname (decode-coding-string (substring namefld 0 fnlen)
+ archive-file-name-coding-system))
+ (csize (archive-l-e (+ p 15) 4))
+ (moddate (archive-l-e (+ p 19) 2))
+ (modtime (archive-l-e (+ p 21) 2))
+ (ucsize (archive-l-e (+ p 25) 4))
+ (fiddle (string= efnname (upcase efnname)))
+ (ifnname (if fiddle (downcase efnname) efnname))
+ (text (format " %8d %-11s %-8s %s"
+ ucsize
+ (archive-dosdate moddate)
+ (archive-dostime modtime)
+ ifnname)))
+ (setq maxlen (max maxlen fnlen)
+ totalsize (+ totalsize ucsize)
+ visual (cons (vector text
+ (- (length text) (length ifnname))
+ (length text))
+ visual)
+ files (cons (vector efnname ifnname fiddle nil (1- p))
+ files)
+ p (+ p 29 csize))))
+ (goto-char (point-min))
+ (let ((dash (concat "- -------- ----------- -------- "
+ (make-string maxlen ?-)
+ "\n")))
+ (insert "M Length Date Time File\n"
+ dash)
+ (archive-summarize-files (nreverse visual))
+ (insert dash
+ (format " %8d %d file%s"
+ totalsize
+ (length files)
+ (if (= 1 (length files)) "" "s"))
+ "\n"))
+ (apply 'vector (nreverse files))))
+
+ (defun archive-arc-rename-entry (archive newname descr)
+ (if (string-match "[:\\\\/]" newname)
+ (error "File names in arc files must not contain a directory
component"))
+ (if (> (length newname) 12)
+ (error "File names in arc files are limited to 12 characters"))
+ (let ((name (concat newname (substring "\0\0\0\0\0\0\0\0\0\0\0\0\0"
+ (length newname))))
+ buffer-read-only)
+ (save-restriction
+ (save-excursion
+ (widen)
+ (goto-char (+ archive-proper-file-start (aref descr 4) 2))
+ (delete-char 13)
+ (insert-unibyte name)))))
+ ;; -------------------------------------------------------------------------
+ ;; Section: Lzh Archives
+
+ (defun archive-lzh-summarize ()
+ (let ((p 1)
+ (totalsize 0)
+ (maxlen 8)
+ files
+ visual)
+ (while (progn (goto-char p) ;beginning of a base header.
+ (looking-at "\\(.\\|\n\\)\\(.\\|\n\\)-l[hz][0-9ds]-"))
+ (let* ((hsize (byte-after p)) ;size of the base header (level 0 and 1)
+ (csize (archive-l-e (+ p 7) 4)) ;size of a compressed file to
follow (level 0 and 2),
+ ;size of extended headers + the
compressed file to follow (level 1).
+ (ucsize (archive-l-e (+ p 11) 4)) ;size of an
uncompressed file.
+ (time1 (archive-l-e (+ p 15) 2)) ;date/time (MSDOS format in
level 0, 1 headers
+ (time2 (archive-l-e (+ p 17) 2)) ;and UNIX format in level 2
header.)
+ (hdrlvl (byte-after (+ p 20))) ;header level
+ thsize ;total header size (base + extensions)
+ fnlen efnname fiddle ifnname width p2 creator
+ neh ;beginning of next extension header (level 1 and 2)
+ mode modestr uid gid text dir prname
+ gname uname modtime moddate)
+ (if (= hdrlvl 3) (error "can't handle lzh level 3 header type"))
+ (when (or (= hdrlvl 0) (= hdrlvl 1))
+ (setq fnlen (byte-after (+ p 21))) ;filename length
+ (setq efnname (let ((str (buffer-substring (+ p 22) (+ p 22 fnlen))))
;filename from offset 22
+ (decode-coding-string
+ str archive-file-name-coding-system)))
+ (setq p2 (+ p 22 fnlen))) ;
+ (if (= hdrlvl 1)
+ (progn ;specific to level 1 header
+ (setq creator (if (>= (- hsize fnlen) 24) (byte-after (+ p2 2))
0))
+ (setq neh (+ p2 3)))
+ (if (= hdrlvl 2)
+ (progn ;specific to level 2 header
+ (setq creator (byte-after (+ p 23)) )
+ (setq neh (+ p 24)))))
+ (if neh ;if level 1 or 2 we expect extension headers to follow
+ (let* ((ehsize (archive-l-e neh 2)) ;size of the extension header
+ (etype (byte-after (+ neh 2)))) ;extension type
+ (while (not (= ehsize 0))
+ (cond
+ ((= etype 1) ;file name
+ (let ((i (+ neh 3)))
+ (while (< i (+ neh ehsize))
+ (setq efnname (concat efnname (char-to-string (byte-after
i))))
+ (setq i (1+ i)))))
+ ((= etype 2) ;directory name
+ (let ((i (+ neh 3)))
+ (while (< i (+ neh ehsize))
+ (setq dir (concat dir
+ (if (= (byte-after i)
+ 255)
+ "/"
+ (char-to-string
+ (char-after i)))))
+ (setq i (1+ i)))))
+ ((= etype 80) ;Unix file permission
+ (setq mode (archive-l-e (+ neh 3) 2)))
+ ((= etype 81) ;UNIX file group/user ID
+ (progn (setq uid (archive-l-e (+ neh 3) 2))
+ (setq gid (archive-l-e (+ neh 5) 2))))
+ ((= etype 82) ;UNIX file group name
+ (let ((i (+ neh 3)))
+ (while (< i (+ neh ehsize))
+ (setq gname (concat gname (char-to-string (char-after
i))))
+ (setq i (1+ i)))))
+ ((= etype 83) ;UNIX file user name
+ (let ((i (+ neh 3)))
+ (while (< i (+ neh ehsize))
+ (setq uname (concat uname (char-to-string (char-after
i))))
+ (setq i (1+ i)))))
+ )
+ (setq neh (+ neh ehsize))
+ (setq ehsize (archive-l-e neh 2))
+ (setq etype (byte-after (+ neh 2))))
+ ;;get total header size for level 1 and 2 headers
+ (setq thsize (- neh p))))
+ (if (= hdrlvl 0) ;total header size
+ (setq thsize hsize))
+ (setq fiddle (if efnname (string= efnname (upcase efnname))))
+ (setq ifnname (if fiddle (downcase efnname) efnname))
+ (setq prname (if dir (concat dir ifnname) ifnname))
+ (setq width (if prname (string-width prname) 0))
+ (setq modestr (if mode (archive-int-to-mode mode) "??????????"))
+ (setq moddate (if (= hdrlvl 2)
+ (archive-unixdate time1 time2) ;level 2 header in
UNIX format
+ (archive-dosdate time2))) ;level 0 and 1 header in DOS
format
+ (setq modtime (if (= hdrlvl 2)
+ (archive-unixtime time1 time2)
+ (archive-dostime time1)))
+ (setq text (if archive-alternate-display
+ (format " %8d %5S %5S %s"
+ ucsize
+ (or uid "?")
+ (or gid "?")
+ ifnname)
+ (format " %10s %8d %-11s %-8s %s"
+ modestr
+ ucsize
+ moddate
+ modtime
+ prname)))
+ (setq maxlen (max maxlen width)
+ totalsize (+ totalsize ucsize)
+ visual (cons (vector text
+ (- (length text) (length prname))
+ (length text))
+ visual)
+ files (cons (vector prname ifnname fiddle mode (1- p))
+ files))
+ (cond ((= hdrlvl 1)
+ (setq p (+ p hsize 2 csize)))
+ ((or (= hdrlvl 2) (= hdrlvl 0))
+ (setq p (+ p thsize 2 csize))))
+ ))
+ (goto-char (point-min))
+ (let ((dash (concat (if archive-alternate-display
+ "- -------- ----- ----- "
+ "- ---------- -------- ----------- -------- ")
+ (make-string maxlen ?-)
+ "\n"))
+ (header (if archive-alternate-display
+ "M Length Uid Gid File\n"
+ "M Filemode Length Date Time File\n"))
+ (sumline (if archive-alternate-display
+ " %8d %d file%s"
+ " %8d %d file%s")))
+ (insert header dash)
+ (archive-summarize-files (nreverse visual))
+ (insert dash
+ (format sumline
+ totalsize
+ (length files)
+ (if (= 1 (length files)) "" "s"))
+ "\n"))
+ (apply 'vector (nreverse files))))
+
+ (defconst archive-lzh-alternate-display t)
+
+ (defun archive-lzh-extract (archive name)
+ (archive-extract-by-stdout archive name archive-lzh-extract))
+
+ (defun archive-lzh-resum (p count)
+ (let ((sum 0))
+ (while (> count 0)
+ (setq count (1- count)
+ sum (+ sum (byte-after p))
+ p (1+ p)))
+ (logand sum 255)))
+
+ (defun archive-lzh-rename-entry (archive newname descr)
+ (save-restriction
+ (save-excursion
+ (widen)
+ (let* ((p (+ archive-proper-file-start (aref descr 4)))
+ (oldhsize (byte-after p))
+ (oldfnlen (byte-after (+ p 21)))
+ (newfnlen (length newname))
+ (newhsize (+ oldhsize newfnlen (- oldfnlen)))
+ buffer-read-only)
+ (if (> newhsize 255)
+ (error "The file name is too long"))
+ (goto-char (+ p 21))
+ (delete-char (1+ oldfnlen))
+ (insert-unibyte newfnlen newname)
+ (goto-char p)
+ (delete-char 2)
+ (insert-unibyte newhsize (archive-lzh-resum p newhsize))))))
+
+ (defun archive-lzh-ogm (newval files errtxt ofs)
+ (save-restriction
+ (save-excursion
+ (widen)
+ (while files
+ (let* ((fil (car files))
+ (p (+ archive-proper-file-start (aref fil 4)))
+ (hsize (byte-after p))
+ (fnlen (byte-after (+ p 21)))
+ (p2 (+ p 22 fnlen))
+ (creator (if (>= (- hsize fnlen) 24) (byte-after (+ p2 2)) 0))
+ buffer-read-only)
+ (if (= creator ?U)
+ (progn
+ (or (numberp newval)
+ (setq newval (funcall newval (archive-l-e (+ p2 ofs) 2))))
+ (goto-char (+ p2 ofs))
+ (delete-char 2)
+ (insert-unibyte (logand newval 255) (lsh newval -8))
+ (goto-char (1+ p))
+ (delete-char 1)
+ (insert-unibyte (archive-lzh-resum (1+ p) hsize)))
+ (message "Member %s does not have %s field"
+ (aref fil 1) errtxt)))
+ (setq files (cdr files))))))
+
+ (defun archive-lzh-chown-entry (newuid files)
+ (archive-lzh-ogm newuid files "an uid" 10))
+
+ (defun archive-lzh-chgrp-entry (newgid files)
+ (archive-lzh-ogm newgid files "a gid" 12))
+
+ (defun archive-lzh-chmod-entry (newmode files)
+ (archive-lzh-ogm
+ ;; This should work even though newmode will be dynamically accessed.
+ (function (lambda (old) (archive-calc-mode old newmode t)))
+ files "a unix-style mode" 8))
+ ;; -------------------------------------------------------------------------
+ ;; Section: Zip Archives
+
+ (defun archive-zip-summarize ()
+ (goto-char (- (point-max) (- 22 18)))
+ (search-backward-regexp "[P]K\005\006")
+ (let ((p (+ (point-min) (archive-l-e (+ (point) 16) 4)))
+ (maxlen 8)
+ (totalsize 0)
+ files
+ visual)
+ (while (string= "PK\001\002" (buffer-substring p (+ p 4)))
+ (let* ((creator (byte-after (+ p 5)))
+ (method (archive-l-e (+ p 10) 2))
+ (modtime (archive-l-e (+ p 12) 2))
+ (moddate (archive-l-e (+ p 14) 2))
+ (ucsize (archive-l-e (+ p 24) 4))
+ (fnlen (archive-l-e (+ p 28) 2))
+ (exlen (archive-l-e (+ p 30) 2))
+ (fclen (archive-l-e (+ p 32) 2))
+ (lheader (archive-l-e (+ p 42) 4))
+ (efnname (let ((str (buffer-substring (+ p 46) (+ p 46 fnlen))))
+ (decode-coding-string
+ str archive-file-name-coding-system)))
+ (isdir (and (= ucsize 0)
+ (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 15)) ; Dos etc.
+ (logior ?\444
+ (if isdir (logior 16384 ?\111) 0)
+ (if (zerop
+ (logand 1 (byte-after (+ p 38))))
+ ?\222 0)))
+ (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))))
+ (string= (upcase efnname) efnname)))
+ (ifnname (if fiddle (downcase efnname) efnname))
+ (width (string-width ifnname))
+ (text (format " %10s %8d %-11s %-8s %s"
+ modestr
+ ucsize
+ (archive-dosdate moddate)
+ (archive-dostime modtime)
+ ifnname)))
+ (setq maxlen (max maxlen width)
+ totalsize (+ totalsize ucsize)
+ visual (cons (vector text
+ (- (length text) (length ifnname))
+ (length text))
+ visual)
+ files (cons (if isdir
+ nil
+ (vector efnname ifnname fiddle mode
+ (list (1- p) lheader)))
+ files)
+ p (+ p 46 fnlen exlen fclen))))
+ (goto-char (point-min))
+ (let ((dash (concat "- ---------- -------- ----------- -------- "
+ (make-string maxlen ?-)
+ "\n")))
+ (insert "M Filemode Length Date Time File\n"
+ dash)
+ (archive-summarize-files (nreverse visual))
+ (insert dash
+ (format " %8d %d file%s"
+ totalsize
+ (length files)
+ (if (= 1 (length files)) "" "s"))
+ "\n"))
+ (apply 'vector (nreverse files))))
+
+ (defun archive-zip-extract (archive name)
+ (if (equal (car archive-zip-extract) "pkzip")
+ (archive-*-extract archive name archive-zip-extract)
+ (archive-extract-by-stdout archive name archive-zip-extract)))
+
+ (defun archive-zip-write-file-member (archive descr)
+ (archive-*-write-file-member
+ archive
+ descr
+ (if (aref descr 2) archive-zip-update-case archive-zip-update)))
+
+ (defun archive-zip-chmod-entry (newmode files)
+ (save-restriction
+ (save-excursion
+ (widen)
+ (while files
+ (let* ((fil (car files))
+ (p (+ archive-proper-file-start (car (aref fil 4))))
+ (creator (byte-after (+ p 5)))
+ (oldmode (aref fil 3))
+ (newval (archive-calc-mode oldmode newmode t))
+ buffer-read-only)
+ (cond ((memq creator '(2 3)) ; Unix + VMS
+ (goto-char (+ p 40))
+ (delete-char 2)
+ (insert-unibyte (logand newval 255) (lsh newval -8)))
+ ((memq creator '(0 5 6 7 10 11 15)) ; Dos etc.
+ (goto-char (+ p 38))
+ (insert-unibyte (logior (logand (byte-after (point)) 254)
+ (logand (logxor 1 (lsh newval -7)) 1)))
+ (delete-char 1))
+ (t (message "Don't know how to change mode for this member"))))
+ (setq files (cdr files))))))
+ ;; -------------------------------------------------------------------------
+ ;; Section: Zoo Archives
+
+ (defun archive-zoo-summarize ()
+ (let ((p (1+ (archive-l-e 25 4)))
+ (maxlen 8)
+ (totalsize 0)
+ files
+ visual)
+ (while (and (string= "\334\247\304\375" (buffer-substring p (+ p 4)))
+ (> (archive-l-e (+ p 6) 4) 0))
+ (let* ((next (1+ (archive-l-e (+ p 6) 4)))
+ (moddate (archive-l-e (+ p 14) 2))
+ (modtime (archive-l-e (+ p 16) 2))
+ (ucsize (archive-l-e (+ p 20) 4))
+ (namefld (buffer-substring (+ p 38) (+ p 38 13)))
+ (dirtype (byte-after (+ p 4)))
+ (lfnlen (if (= dirtype 2) (byte-after (+ p 56)) 0))
+ (ldirlen (if (= dirtype 2) (byte-after (+ p 57)) 0))
+ (fnlen (or (string-match "\0" namefld) 13))
+ (efnname (let ((str
+ (concat
+ (if (> ldirlen 0)
+ (concat (buffer-substring
+ (+ p 58 lfnlen)
+ (+ p 58 lfnlen ldirlen -1))
+ "/")
+ "")
+ (if (> lfnlen 0)
+ (buffer-substring (+ p 58)
+ (+ p 58 lfnlen -1))
+ (substring namefld 0 fnlen)))))
+ (decode-coding-string
+ str archive-file-name-coding-system)))
+ (fiddle (and (= lfnlen 0) (string= efnname (upcase efnname))))
+ (ifnname (if fiddle (downcase efnname) efnname))
+ (width (string-width ifnname))
+ (text (format " %8d %-11s %-8s %s"
+ ucsize
+ (archive-dosdate moddate)
+ (archive-dostime modtime)
+ ifnname)))
+ (setq maxlen (max maxlen width)
+ totalsize (+ totalsize ucsize)
+ visual (cons (vector text
+ (- (length text) (length ifnname))
+ (length text))
+ visual)
+ files (cons (vector efnname ifnname fiddle nil (1- p))
+ files)
+ p next)))
+ (goto-char (point-min))
+ (let ((dash (concat "- -------- ----------- -------- "
+ (make-string maxlen ?-)
+ "\n")))
+ (insert "M Length Date Time File\n"
+ dash)
+ (archive-summarize-files (nreverse visual))
+ (insert dash
+ (format " %8d %d file%s"
+ totalsize
+ (length files)
+ (if (= 1 (length files)) "" "s"))
+ "\n"))
+ (apply 'vector (nreverse files))))
+
+ (defun archive-zoo-extract (archive name)
+ (archive-extract-by-stdout archive name archive-zoo-extract))
+ ;; -------------------------------------------------------------------------
+ ;; This line was a mistake; it is kept now for compatibility.
+ ;; rms 15 Oct 98
+ (provide 'archive-mode)
+
+ (provide 'arc-mode)
+
+ ;;; arc-mode.el ends here
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