;;; jka-cmpr-hook.el --- preloaded code to enable jka-compr.el
-;; Copyright (C) 1993, 1994, 1995, 1997, 1999, 2000, 2002, 2003,
-;; 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; Copyright (C) 1993-1995, 1997, 1999-2000, 2002-2011
+;; Free Software Foundation, Inc.
;; Author: jka@ece.cmu.edu (Jay K. Adams)
;; Maintainer: FSF
;; Keywords: data
+;; Package: emacs
;; This file is part of GNU Emacs.
\f
(defun jka-compr-build-file-regexp ()
- (mapconcat
- 'jka-compr-info-regexp
- jka-compr-compression-info-list
- "\\|"))
+ (purecopy
+ (let ((re-anchored '())
+ (re-free '()))
+ (dolist (e jka-compr-compression-info-list)
+ (let ((re (jka-compr-info-regexp e)))
+ (if (string-match "\\\\'\\'" re)
+ (push (substring re 0 (match-beginning 0)) re-anchored)
+ (push re re-free))))
+ (concat
+ (if re-free (concat (mapconcat 'identity re-free "\\|") "\\|"))
+ "\\(?:"
+ (mapconcat 'identity re-anchored "\\|")
+ "\\)" file-name-version-regexp "?\\'"))))
;; Functions for accessing the return value of jka-compr-get-compression-info
(defun jka-compr-info-regexp (info) (aref info 0))
based on the filename itself and `jka-compr-compression-info-list'."
(catch 'compression-info
(let ((case-fold-search nil))
- (mapc
- (function (lambda (x)
- (and (string-match (jka-compr-info-regexp x) filename)
- (throw 'compression-info x))))
- jka-compr-compression-info-list)
+ (dolist (x jka-compr-compression-info-list)
+ (and (string-match (jka-compr-info-regexp x) filename)
+ (throw 'compression-info x)))
nil)))
(defun jka-compr-install ()
;; compr-message compr-prog compr-args
;; uncomp-message uncomp-prog uncomp-args
;; can-append strip-extension-flag file-magic-bytes]
- '(["\\.Z\\(~\\|\\.~[0-9]+~\\)?\\'"
+ (mapcar 'purecopy
+ '(["\\.Z\\'"
"compressing" "compress" ("-c")
;; gzip is more common than uncompress. It can only read, not write.
"uncompressing" "gzip" ("-c" "-q" "-d")
;; Formerly, these had an additional arg "-c", but that fails with
;; "Version 0.1pl2, 29-Aug-97." (RedHat 5.1 GNU/Linux) and
;; "Version 0.9.0b, 9-Sept-98".
- ["\\.bz2\\(~\\|\\.~[0-9]+~\\)?\\'"
+ ["\\.bz2\\'"
"bzip2ing" "bzip2" nil
"bunzip2ing" "bzip2" ("-d")
nil t "BZh"]
- ["\\.tbz\\'"
+ ["\\.tbz2?\\'"
"bzip2ing" "bzip2" nil
"bunzip2ing" "bzip2" ("-d")
nil nil "BZh"]
- ["\\.\\(?:tgz\\|svgz\\|sifz\\)\\(~\\|\\.~[0-9]+~\\)?\\'"
+ ["\\.\\(?:tgz\\|svgz\\|sifz\\)\\'"
"compressing" "gzip" ("-c" "-q")
"uncompressing" "gzip" ("-c" "-q" "-d")
t nil "\037\213"]
- ["\\.g?z\\(~\\|\\.~[0-9]+~\\)?\\'"
+ ["\\.g?z\\'"
"compressing" "gzip" ("-c" "-q")
"uncompressing" "gzip" ("-c" "-q" "-d")
t t "\037\213"]
+ ["\\.xz\\'"
+ "XZ compressing" "xz" ("-c" "-q")
+ "XZ uncompressing" "xz" ("-c" "-q" "-d")
+ t t "\3757zXZ\0"]
;; dzip is gzip with random access. Its compression program can't
;; read/write stdin/out, so .dz files can only be viewed without
;; saving, having their contents decompressed with gzip.
["\\.dz\\'"
nil nil nil
"uncompressing" "gzip" ("-c" "-q" "-d")
- nil t "\037\213"])
+ nil t "\037\213"]))
"List of vectors that describe available compression techniques.
Each element, which describes a compression technique, is a vector of
:group 'jka-compr)
(defcustom jka-compr-mode-alist-additions
- (list (cons "\\.tgz\\'" 'tar-mode) (cons "\\.tbz\\'" 'tar-mode))
+ (list (cons (purecopy "\\.tgz\\'") 'tar-mode) (cons (purecopy "\\.tbz2?\\'") 'tar-mode))
"List of pairs added to `auto-mode-alist' when installing jka-compr.
Uninstalling jka-compr removes all pairs from `auto-mode-alist' that
installing added.
:set 'jka-compr-set
:group 'jka-compr)
-(defcustom jka-compr-load-suffixes '(".gz")
+(defcustom jka-compr-load-suffixes (list (purecopy ".gz"))
"List of compression related suffixes to try when loading files.
Enabling Auto Compression mode appends this list to `load-file-rep-suffixes',
which see. Disabling Auto Compression mode removes all suffixes
(defmacro with-auto-compression-mode (&rest body)
"Evalute BODY with automatic file compression and uncompression enabled."
+ (declare (indent 0))
(let ((already-installed (make-symbol "already-installed")))
`(let ((,already-installed (jka-compr-installed-p)))
(unwind-protect
,@body)
(unless ,already-installed
(jka-compr-uninstall))))))
-(put 'with-auto-compression-mode 'lisp-indent-function 0)
-
;; This is what we need to know about jka-compr-handler
;; in order to decide when to call it.
(provide 'jka-cmpr-hook)
-;; arch-tag: 4bd73429-f400-45fe-a065-270a113e31a8
;;; jka-cmpr-hook.el ends here