ctp@cs.utexas.edu (Clyde T. Poole) (12/15/89)
Sometime awhile back, I believe I saw a posting including some emacs
lisp code to implement the automatic uncompress of .Z files (files
compressed with the unix compress utility). I would appreciate it if
someone would provide me with the code or give me pointers to where I
can find it.
Thanks
ctp
-----
Clyde T. Poole -- Technical Coordinator, Facilities and Equipment
Univ. of Texas at Austin ARPA/CS/NSFnet: ctp@cs.utexas.edu
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Austin, TX 78712-1188 VOICE: (512) 471-9551 FAX: (512) 471-0548graham@r3.cs.man.ac.uk (Graham Gough) (12/15/89)
From article <7365@cs.utexas.edu>, by ctp@cs.utexas.edu (Clyde T. Poole): > Sometime awhile back, I believe I saw a posting including some emacs > lisp code to implement the automatic uncompress of .Z files (files > compressed with the unix compress utility). I would appreciate it if > someone would provide me with the code or give me pointers to where I > can find it. > This isn't the one that was posted then and isn't the most elegant piece of e-lisp I've ever written, but it's served me well for a couple of years. I hope it does what is required, Graham Gough ---------------------------------------------------------- Graham D. Gough, Department of Computer Science, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K. Tel: (+44) 61-275 6277 JANET: graham@uk.ac.man.cs USENET: ..ukc!man.cs.r3!graham ------------------------cut here ------------------------ ;; ;; zcat.el ;; ;;; This file is not part of GNU Emacs, however, GNU copyleft applies ;; ;; Visiting compressed files. ;; ;; Graham Gough (graham@uk.ac.man.cs.ux) 13/5/87 ;; ;; To use just load via .emacs, everything else is automatic ;; (or (assoc "\\.Z$" auto-mode-alist) (setq auto-mode-alist (append auto-mode-alist '(("\\.Z$" . zcat-buffer))))) (defvar delete-compressed-files t "*Non-nil means delete the compressed version of a file when a buffer is saved. Only has effect if original file visited was compressed.") (defun delete-compressed-file () " Deletes (on confirmation) compressed version of file associated with current buffer" (interactive) (let ((fname (concat (buffer-file-name) ".Z")) ret) (if (file-exists-p fname) (progn (setq answer (yes-or-no-p (concat "Delete compressed file (" fname ")? "))) (if answer (condition-case () (delete-file fname) (error (message "Can't delete compressed file.") (setq ret t)))))) nil)) (defun zcat-buffer () " Uncompresses contents of buffer, respecting read-only status. Changes buffer-name, visited-file-name and mode appropriately. If buffer is saved, compressed file is (optionally) deleted. Bug: Doesn't find an existing uncompressed buffer, creates a new one" (interactive) (let ((buf-stat buffer-read-only) ; remember read-only status (new-buf-name (substring (buffer-name) 0 -2)) ; get new buffer name (new-buf-fname (substring (buffer-file-name) 0 -2))) ; and file name (setq buffer-read-only nil) (message "Uncompressing %s .." (buffer-name)) (shell-command-on-region (point-min) (point-max) "zcat" t) (message "Done") (setq buffer-read-only buf-stat) ; reinstate original ; buffer-read-only status (rename-buffer (let ((newbname new-buf-name) (counter 1)) (while (get-buffer newbname) (setq newbname (concat new-buf-name "<" (prin1-to-string counter) ">")) (setq counter (1+ counter))) newbname)) ; generate appropriate name. (set-visited-file-name new-buf-fname) (set-auto-mode) (if (not delete-compressed-files) nil (make-variable-buffer-local 'write-file-hooks) (setq write-file-hooks (append write-file-hooks '(delete-compressed-file)))) (set-buffer-modified-p nil) ; this means that auto-saves ; and saves only take place ; if buffer is really modified (goto-char (point-min))))