--- /dev/null
+;;; arc-mode.el --- simple editing of archives
+
+;;; Copyright (C) 1995 Free Software Foundation, Inc.
+
+;; Author: Morten Welinder (terra@diku.dk)
+;; Version: 0,31
+;; 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, 675 Mass Ave, Cambridge, MA 02139, 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 <wbrodie@panix.com> 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.
+;;
+;; 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.
+;; -------------------------------------
+;; SETUP: .emacs fodder:
+;;
+;; (setq auto-mode-alist
+;; (cons '("\\.\\(arc\\|zip\\|lzh\\|zoo\\)\\'" . archive-mode)
+;; auto-mode-alist))
+;; (autoload 'archive-mode "arc-mode" "Major mode for editing archives." t)
+;;
+;; Furthermore, for msdog, you need to make sure that the archives are loaded
+;; as binary files. For arc/zip/pak/lzh/zoo this is the default.
+;; -------------------------------------
+;; HOOKS: `foo' means one the the supported archive types.
+;;
+;; archive-mode-hook
+;; archive-foo-mode-hook
+;; archive-extract-hooks
+
+;;; Code:
+
+;; -------------------------------------------------------------------------
+;; Section: Configuration.
+
+(defvar archive-dos-members t
+ "*If non-nil then recognize member files using ^M^J as line terminator
+and do The Right Thing.")
+
+(defvar archive-tmpdir
+ (expand-file-name
+ (make-temp-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")
+
+(defvar archive-remote-regexp "^/[^/:]*[^/:]:"
+ "*Regexp recognizing archive files names that are not local (i.e., are
+not proper file names outside Emacs). A local copy a the archive will
+be used when updating.")
+
+(defvar archive-extract-hooks nil
+ "*Hooks to run when an archive member has been extracted.")
+;; ------------------------------
+;; 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.
+(defvar archive-arc-extract
+ '("arc" "x")
+ "*Program and its options to run in order to extract an arc file member
+to the current directory. Archive and member name will be added.")
+
+(defvar 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.")
+
+(defvar 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.")
+;; ------------------------------
+;; Lzh archive configuration
+
+(defvar archive-lzh-extract
+ '("lha" "pq")
+ "*Program and its options to run in order to extract an lzh file member
+to standard output. Archive and member name will be added.")
+
+(defvar 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.")
+
+(defvar 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.")
+;; ------------------------------
+;; Zip archive configuration
+
+(defvar archive-zip-use-pkzip (memq system-type '(ms-dos windows-nt))
+ "*If non-nil then all zip options default to values suitable when using
+pkzip and pkunzip. Only set to true for msdog systems!")
+
+(defvar archive-zip-extract
+ (if archive-zip-use-pkzip '("pkunzip" "-e") '("unzip" "-qq" "-c"))
+ "*Program and its options to run in order to extract a zip file member
+to standard output. Archive and member name will be added.\n
+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.")
+
+;; For several reasons the latter behaviour is not desireable 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.
+
+(defvar archive-zip-expunge
+ (if archive-zip-use-pkzip '("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.")
+
+(defvar archive-zip-update
+ (if archive-zip-use-pkzip '("pkzip" "-u") '("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.")
+
+(defvar archive-zip-update-case
+ (if archive-zip-use-pkzip archive-zip-update '("zip" "-q" "-k"))
+ "*Program and its options to run in order to update a case fiddled
+zip file member. Options should ensure that specified directory will
+be put into the zip file. Archive and member name will be added.")
+
+(defvar archive-zip-case-fiddle t
+ "*If non-nil then zip file members are mapped to lower case if created
+by a system that under single case file names.")
+;; ------------------------------
+;; Zoo archive configuration
+
+(defvar archive-zoo-extract
+ '("zoo" "xpq")
+ "*Program and its options to run in order to extract a zoo file member
+to standard output. Archive and member name will be added.")
+
+(defvar 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.")
+
+(defvar 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.")
+;; -------------------------------------------------------------------------
+;; 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-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-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)
+
+;; buffer-file-type is a per-buffer variable in the msdog configuration
+(if (boundp 'buffer-file-type) nil
+ (defvar buffer-file-type nil
+ "*Nil for dos-style text file, non-nil otherwise.")
+ (make-variable-buffer-local 'buffer-file-type)
+ (put 'buffer-file-type 'permanent-local t)
+ (setq-default buffer-file-type nil))
+
+(defvar archive-subfile-dos nil
+ "Negation of `buffer-file-type' which see.")
+(make-variable-buffer-local 'archive-subfile-dos)
+(put 'archive-subfile-dos 'permanent-local t)
+
+(defvar archive-files nil "Vector of file descriptors. Each descriptor is
+a vector of [ext-file-name int-file-name case-fiddled mode ...]")
+(make-variable-buffer-local 'archive-files)
+;; -------------------------------------------------------------------------
+;; Section: Support functions.
+
+(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 arguemnt, length, should be supplied."
+ (if (stringp str)
+ (setq len (length str))
+ (setq str (buffer-substring str (+ str len))))
+ (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------"
+ (let ((str (make-string 10 ?-)))
+ (or (zerop (logand 16384 mode)) (aset str 0 ?d))
+ (or (zerop (logand 8192 mode)) (aset str 0 ?c)) ; completeness
+ (or (zerop (logand 256 mode)) (aset str 1 ?r))
+ (or (zerop (logand 128 mode)) (aset str 2 ?w))
+ (or (zerop (logand 64 mode)) (aset str 3 ?x))
+ (or (zerop (logand 32 mode)) (aset str 4 ?r))
+ (or (zerop (logand 16 mode)) (aset str 5 ?w))
+ (or (zerop (logand 8 mode)) (aset str 6 ?x))
+ (or (zerop (logand 4 mode)) (aset str 7 ?r))
+ (or (zerop (logand 2 mode)) (aset str 8 ?w))
+ (or (zerop (logand 1 mode)) (aset str 9 ?x))
+ (or (zerop (logand 1024 mode)) (aset str 3 (if (zerop (logand 64 mode))
+ ?S ?s)))
+ (or (zerop (logand 2048 mode)) (aset str 6 (if (zerop (logand 8 mode))
+ ?S ?s)))
+ str))
+
+(defun archive-calc-mode (oldmode newmode &optional error)
+ "From the integer OLDMODE and the string NEWMODE calculate a new file
+mode.\n
+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) 53))
+ (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 9)
+;; (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. Do 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
+
+(defun archive-mode (&optional force)
+ "Major mode for viewing an archive file as a dired-like listing of its
+contents. 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 (copy-sequence (symbol-name type))))
+ (aset typename 0 (upcase (aref typename 0)))
+ (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)
+ (make-local-variable 'local-write-file-hooks)
+ (add-hook 'local-write-file-hooks 'archive-write-file)
+
+ ;; Real file contents is binary
+ (make-local-variable 'require-final-newline)
+ (setq require-final-newline nil)
+ (make-local-variable 'enable-local-variables)
+ (setq enable-local-variables nil)
+ (setq buffer-file-type t)
+
+ (make-local-variable 'archive-read-only)
+ (setq archive-read-only (not (file-writable-p (buffer-file-name))))
+
+ ;; 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)))
+
+ (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)
+ (archive-summarize)
+ (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 [mouse-2] 'archive-mouse-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 "\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)
+ (substitute-key-definition 'undo 'archive-undo archive-mode-map global-map)
+
+ ;; Get rid of the Edit menu bar item to save space.
+ (define-key archive-mode-map [menu-bar edit] 'undefined)
+
+ (define-key archive-mode-map [menu-bar immediate]
+ (cons "Immediate" (make-sparse-keymap "Immediate")))
+ (define-key archive-mode-map [menu-bar immediate alternate]
+ '("Alternate Display" . archive-alternate-display))
+ (put 'archive-alternate-display 'menu-enable
+ '(boundp (archive-name "alternate-display")))
+ (define-key archive-mode-map [menu-bar immediate view]
+ '("View This File" . archive-view))
+ (define-key archive-mode-map [menu-bar immediate display]
+ '("Display in Other Window" . archive-display-other-window))
+ (define-key archive-mode-map [menu-bar immediate find-file-other-window]
+ '("Find in Other Window" . archive-extract-other-window))
+ (define-key archive-mode-map [menu-bar immediate find-file]
+ '("Find This File" . archive-extract))
+
+ (define-key archive-mode-map [menu-bar mark]
+ (cons "Mark" (make-sparse-keymap "Mark")))
+ (define-key archive-mode-map [menu-bar mark unmark-all]
+ '("Unmark All" . archive-unmark-all-files))
+ (define-key archive-mode-map [menu-bar mark deletion]
+ '("Flag" . archive-flag-deleted))
+ (define-key archive-mode-map [menu-bar mark unmark]
+ '("Unflag" . archive-unflag))
+ (define-key archive-mode-map [menu-bar mark mark]
+ '("Mark" . archive-mark))
+
+ (define-key archive-mode-map [menu-bar operate]
+ (cons "Operate" (make-sparse-keymap "Operate")))
+ (define-key archive-mode-map [menu-bar operate chown]
+ '("Change Owner..." . archive-chown-entry))
+ (put 'archive-chown-entry 'menu-enable
+ '(fboundp (archive-name "chown-entry")))
+ (define-key archive-mode-map [menu-bar operate chgrp]
+ '("Change Group..." . archive-chgrp-entry))
+ (put 'archive-chgrp-entry 'menu-enable
+ '(fboundp (archive-name "chgrp-entry")))
+ (define-key archive-mode-map [menu-bar operate chmod]
+ '("Change Mode..." . archive-chmod-entry))
+ (put 'archive-chmod-entry 'menu-enable
+ '(fboundp (archive-name "chmod-entry")))
+ (define-key archive-mode-map [menu-bar operate rename]
+ '("Rename to..." . archive-rename-entry))
+ (put 'archive-rename-entry 'menu-enable
+ '(fboundp (archive-name "rename-entry")))
+ ;;(define-key archive-mode-map [menu-bar operate copy]
+ ;; '("Copy to..." . archive-copy))
+ (define-key archive-mode-map [menu-bar operate expunge]
+ '("Expunge Marked Files" . archive-expunge))
+ )
+
+(let* ((item1 '(archive-subfile-mode " Archive"))
+ (item2 '(archive-subfile-dos " Dos"))
+ (items (if (memq system-type '(ms-dos windows-nt))
+ (list item1) ; msdog has its own indicator
+ (list item1 item2))))
+ (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][0-9]-") '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 ()
+ "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)."
+ (widen)
+ (let (buffer-read-only)
+ (message "Parsing archive file...")
+ (buffer-disable-undo (current-buffer))
+ (setq archive-files (funcall (archive-name "summarize")))
+ (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)
+ (set-buffer-modified-p modified)
+ (goto-char archive-file-list-start)
+ (archive-next-line no)))
+
+(defun archive-summarize-files (files)
+ "Insert a desciption 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
+ (lambda (fil)
+ ;; Using `concat' here copies the text also, so we can add
+ ;; properties without problems.
+ (let ((text (concat (aref fil 0) "\n")))
+ (put-text-property (aref fil 1) (aref fil 2)
+ 'mouse-face 'highlight
+ 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-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))
+
+(defun archive-maybe-update (unchanged)
+ (if archive-remote
+ (let ((name archive-local-name)
+ (modified (buffer-modified-p))
+ buffer-read-only)
+ (if unchanged nil
+ (erase-buffer)
+ (insert-file-contents name)
+ (archive-mode t))
+ (archive-delete-local name)
+ (if (not unchanged)
+ (message "Archive file must be saved for changes to take effect"))
+ (set-buffer-modified-p (or modified (not unchanged))))))
+
+(defun archive-delete-local (name)
+ "Delete (robust) the file NAME and its parents up to and including the
+value of `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-mouse-extract (event)
+ "Extract a file whose name you click on."
+ (interactive "e")
+ (save-excursion
+ (set-buffer (window-buffer (posn-window (event-end event))))
+ (save-excursion
+ (goto-char (posn-point (event-end event)))
+ ;; Just make sure this doesn't get an error.
+ (archive-get-descr)))
+ (select-window (posn-window (event-end event)))
+ (goto-char (posn-point (event-end event)))
+ (archive-extract))
+
+(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"))
+ (read-only-p (or archive-read-only view-p))
+ (buffer (get-buffer bufname))
+ (just-created nil))
+ (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-subfile-dos nil
+ buffer-file-type t)
+ (if (fboundp extractor)
+ (funcall extractor archive ename)
+ (archive-*-extract archive ename (symbol-value extractor)))
+ (if archive-dos-members (archive-check-dos))
+ (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)
+ (setq archive-remote t))
+ (run-hooks 'archive-extract-hooks))
+ (archive-maybe-update t))
+ (if view-p
+ (progn
+ (view-buffer buffer)
+ (and just-created (setq view-exit-action '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)))
+ (make-directory (directory-file-name default-directory) t)
+ (apply 'call-process
+ (car command)
+ nil
+ nil
+ nil
+ (append (cdr command) (list archive name)))
+ (insert-file-contents tmpfile)
+ (archive-delete-local tmpfile)))
+
+(defun archive-extract-by-stdout (archive name command)
+ (let ((binary-process-output t)) ; for Ms-Dos
+ (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 the file in the 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-check-dos (&optional force)
+ "*If this looks like a buffer with ^M^J as line terminator then remove
+those ^Ms and set archive-subfile-dos."
+ (save-restriction
+ (widen)
+ (save-excursion
+ (goto-char (point-min))
+ (setq archive-subfile-dos
+ (or force (not (search-forward-regexp "[^\r]\n" nil t))))
+ (setq buffer-file-type (not archive-subfile-dos))
+ (if archive-subfile-dos
+ (let ((modified (buffer-modified-p)))
+ (buffer-disable-undo (current-buffer))
+ (goto-char (point-min))
+ (while (search-forward "\r\n" nil t)
+ (replace-match "\n"))
+ (buffer-enable-undo)
+ (set-buffer-modified-p modified))))))
+
+(defun archive-write-file-member ()
+ (if archive-subfile-dos
+ (save-restriction
+ (widen)
+ (save-excursion
+ (goto-char (point-min))
+ ;; We don't want our ^M^J <--> ^J changes to show in the undo list
+ (let ((undo-list buffer-undo-list))
+ (unwind-protect
+ (progn
+ (setq buffer-undo-list t)
+ (while (search-forward "\n" nil t)
+ (replace-match "\r\n"))
+ (setq archive-subfile-dos nil)
+ (setq buffer-file-type t)
+ ;; OK, we're now have explicit ^M^Js -- save and re-unixfy
+ (archive-write-file-member))
+ (progn
+ (archive-check-dos t)
+ (setq buffer-undo-list undo-list))))
+ t))
+ (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)
+ (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)
+ (revert-buffer)
+ 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)
+ (write-region (point-min) (point-max) tmpfile nil 'nomessage)
+ (if (aref descr 3)
+ ;; Set the file modes, but make sure we can read it.
+ (set-file-modes tmpfile (logior ?\400 (aref descr 3))))
+ (let ((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 ()
+ (save-excursion
+ (write-region archive-proper-file-start (point-max) 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
+in the archive.\n\
+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) newname 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-autosave no-confirm)
+ (let ((no (archive-get-lineno)))
+ (setq archive-files nil)
+ (let ((revert-buffer-function nil))
+ (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))
+ (= (char-after p) ?\C-z)
+ (> (char-after (1+ p)) 0))
+ (let* ((namefld (buffer-substring (+ p 2) (+ p 2 13)))
+ (fnlen (or (string-match "\0" namefld) 13))
+ (efnname (substring namefld 0 fnlen))
+ (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 may not contain a path"))
+ (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 name)))))
+;; -------------------------------------------------------------------------
+;; Section: Lzh Archives
+
+(defun archive-lzh-summarize ()
+ (let ((p 1)
+ (totalsize 0)
+ (maxlen 8)
+ files
+ visual)
+ (while (progn (goto-char p) (looking-at "..-l[hz][0-9]-"))
+ (let* ((hsize (char-after p))
+ (csize (archive-l-e (+ p 7) 4))
+ (ucsize (archive-l-e (+ p 11) 4))
+ (modtime (archive-l-e (+ p 15) 2))
+ (moddate (archive-l-e (+ p 17) 2))
+ (fnlen (char-after (+ p 21)))
+ (efnname (buffer-substring (+ p 22) (+ p 22 fnlen)))
+ (fiddle (string= efnname (upcase efnname)))
+ (ifnname (if fiddle (downcase efnname) efnname))
+ (p2 (+ p 22 fnlen))
+ (creator (if (>= (- hsize fnlen) 24) (char-after (+ p2 2)) 0))
+ (mode (if (= creator ?U) (archive-l-e (+ p2 8) 2) ?\666))
+ (modestr (if mode (archive-int-to-mode mode) "??????????"))
+ (uid (if (= creator ?U) (archive-l-e (+ p2 10) 2)))
+ (gid (if (= creator ?U) (archive-l-e (+ p2 12) 2)))
+ (text (if archive-alternate-display
+ (format " %8d %5S %5S %s"
+ ucsize
+ (or uid "?")
+ (or gid "?")
+ ifnname)
+ (format " %10s %8d %-11s %-8s %s"
+ modestr
+ 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 mode (1- p))
+ files)
+ p (+ p hsize 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 (char-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 (char-after p))
+ (oldfnlen (char-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 newfnlen newname)
+ (goto-char p)
+ (delete-char 2)
+ (insert 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 (char-after p))
+ (fnlen (char-after (+ p 21)))
+ (p2 (+ p 22 fnlen))
+ (creator (if (>= (- hsize fnlen) 24) (char-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 (logand newval 255) (lsh newval -8))
+ (goto-char (1+ p))
+ (delete-char 1)
+ (insert (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.
+ (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 (1+ (archive-l-e (+ (point) 16) 4)))
+ (maxlen 8)
+ (totalsize 0)
+ files
+ visual)
+ (while (string= "PK\001\002" (buffer-substring p (+ p 4)))
+ (let* ((creator (char-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))
+ (lheader (archive-l-e (+ p 42) 4))
+ (efnname (buffer-substring (+ p 46) (+ p 46 fnlen)))
+ (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)) ; Dos etc.
+ (logior ?\444
+ (if isdir (logior 16384 ?\111) 0)
+ (if (zerop
+ (logand 1 (char-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))))))
+ (ifnname (if fiddle (downcase efnname) efnname))
+ (text (format " %10s %8d %-11s %-8s %s"
+ modestr
+ 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 (if isdir
+ nil
+ (vector efnname ifnname fiddle mode
+ (list (1- p) lheader)))
+ files)
+ p (+ p 46 fnlen exlen))))
+ (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 archive-zip-use-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 (char-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 (logand newval 255) (lsh newval -8)))
+ ((memq creator '(0 5 6 7 10 11)) ; Dos etc.
+ (goto-char (+ p 38))
+ (insert (logior (logand (char-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)))
+ (fnlen (or (string-match "\0" namefld) 13))
+ (efnname (substring namefld 0 fnlen))
+ (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 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))
+;; -------------------------------------------------------------------------
+(provide 'archive-mode)
+
+;; arc-mode.el ends here.
projects / emacs.git / commitdiff