procyberian/emacs
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

(uncompress-program): New variable.

Browse source 
(uncompress-backup-file): Use it.
(uncompress-while-visiting): Use that var.  Handle .gz suffix.
(auto-mode-alist): Handle .gz suffix.
(find-compressed-version): Handle .gz suffix.
This commit is contained in:
Richard M. Stallman 1994-04-04 20:48:08 +00:00
parent 399f8dd645
commit baf90b6226
1 changed files with 25 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
lisp/uncompress.el
View file

@ -34,26 +34,36 @@
;; so that making the backup can work properly. ;; so that making the backup can work properly.
;; This is used as a write-file-hook. ;; This is used as a write-file-hook.
(defvar uncompress-program "gunzip"
"Program to use for uncompression.")
(defun uncompress-backup-file () (defun uncompress-backup-file ()
(and buffer-file-name make-backup-files (not buffer-backed-up) (and buffer-file-name make-backup-files (not buffer-backed-up)
(not (file-exists-p buffer-file-name)) (not (file-exists-p buffer-file-name))
(call-process "uncompress" nil nil nil buffer-file-name)) (call-process uncompress-program nil nil nil buffer-file-name))
nil) nil)
(or (assoc "\\.Z$" auto-mode-alist) (or (assoc "\\.Z$" auto-mode-alist)
(setq auto-mode-alist (setq auto-mode-alist
(cons '("\\.Z$" . uncompress-while-visiting) auto-mode-alist))) (cons '("\\.Z$" . uncompress-while-visiting) auto-mode-alist)))
(or (assoc "\\.gz$" auto-mode-alist)
(setq auto-mode-alist
(cons '("\\.gz$" . uncompress-while-visiting) auto-mode-alist)))
(defun uncompress-while-visiting () (defun uncompress-while-visiting ()
"Temporary \"major mode\" used for .Z files, to uncompress the contents. "Temporary \"major mode\" used for .Z and .gz files, to uncompress them.
It then selects a major mode from the uncompressed file name and contents." It then selects a major mode from the uncompressed file name and contents."
(if (and (not (null buffer-file-name)) (if (and (not (null buffer-file-name))
(string-match "\\.Z$" buffer-file-name)) (string-match "\\.Z$" buffer-file-name))
(set-visited-file-name (set-visited-file-name
(substring buffer-file-name 0 (match-beginning 0)))) (substring buffer-file-name 0 (match-beginning 0)))
(if (and (not (null buffer-file-name))
(string-match "\\.gz$" buffer-file-name))
(set-visited-file-name
(substring buffer-file-name 0 (match-beginning 0)))))
(message "Uncompressing...") (message "Uncompressing...")
(let ((buffer-read-only nil)) (let ((buffer-read-only nil))
(shell-command-on-region (point-min) (point-max) "uncompress" t)) (shell-command-on-region (point-min) (point-max) uncompress-program t))
(message "Uncompressing...done") (message "Uncompressing...done")
(set-buffer-modified-p nil) (set-buffer-modified-p nil)
(make-local-variable 'write-file-hooks) (make-local-variable 'write-file-hooks)
@ -69,13 +79,17 @@ It then selects a major mode from the uncompressed file name and contents."
"Hook to read and uncompress the compressed version of a file." "Hook to read and uncompress the compressed version of a file."
;; Just pretend we had visited the compressed file, ;; Just pretend we had visited the compressed file,
;; and uncompress-while-visiting will do the rest. ;; and uncompress-while-visiting will do the rest.
(if (file-exists-p (concat buffer-file-name ".Z")) (let (name)
(progn (if (file-exists-p (setq name (concat buffer-file-name ".Z")))
(setq buffer-file-name (concat buffer-file-name ".Z")) (setq buffer-file-name name)
(insert-file-contents buffer-file-name t) (if (file-exists-p (setq name (concat buffer-file-name ".gz")))
(goto-char (point-min)) (setq buffer-file-name name)))
(setq error nil) (if (eq name buffer-file-name)
t))) (progn
(insert-file-contents buffer-file-name t)
(goto-char (point-min))
(setq error nil)
t))))
(provide 'uncompress) (provide 'uncompress)