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-
-
-
- ;; ============================================================
- ;; NOTE: crypt.el is a much more complete version of this hack.
- ;; ============================================================
-
-
-
- ;; When we are about to make a backup file,
- ;; uncompress the file we visited
- ;; so that making the backup can work properly.
- ;; This is used as a write-file-hook.
-
- (defun uncompress-backup-file ()
- (and buffer-file-name make-backup-files (not buffer-backed-up)
- (not (file-exists-p buffer-file-name))
- (call-process "uncompress" nil nil nil buffer-file-name))
- nil)
-
- (or (assoc "\\.Z$" auto-mode-alist)
- (setq auto-mode-alist
- (cons '("\\.Z$" . uncompress-while-visiting) auto-mode-alist)))
-
- (defun uncompress-while-visiting ()
- "Temporary \"major mode\" used for .Z files, to uncompress the contents.
- It then selects a major mode from the uncompressed file name and contents."
- (if (and (not (null buffer-file-name))
- (string-match "\\.Z$" buffer-file-name))
- (set-visited-file-name
- (substring buffer-file-name 0 (match-beginning 0))))
- (message "Uncompressing...")
- (let ((buffer-read-only nil))
- (shell-command-on-region (point-min) (point-max) "uncompress" t))
- (message "Uncompressing...done")
- (set-buffer-modified-p nil)
- (make-local-variable 'write-file-hooks)
- (or (memq 'uncompress-backup-file write-file-hooks)
- (setq write-file-hooks (cons 'uncompress-backup-file write-file-hooks)))
- (normal-mode))
-
- (or (memq 'find-compressed-version find-file-not-found-hooks)
- (setq find-file-not-found-hooks
- (cons 'find-compressed-version find-file-not-found-hooks)))
-
- (defun find-compressed-version ()
- "Hook to read and uncompress the compressed version of a file."
- ;; Just pretend we had visited the compressed file,
- ;; and uncompress-while-visiting will do the rest.
- (if (file-exists-p (concat buffer-file-name ".Z"))
- (progn
- (setq buffer-file-name (concat buffer-file-name ".Z"))
- (insert-file-contents buffer-file-name t)
- (goto-char (point-min))
- (setq error nil)
- t)))
-