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- ;; dired-vms.el - VMS support for dired. Revision: 1.17
- ;; Copyright (C) 1990, 1992 Free Software Foundation, Inc.
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free
- ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;; Id: dired-vms.el,v 1.17 1991/09/09 16:54:03 sk RelBeta
-
- ;; You'll need vmsproc.el for this function:
- (autoload 'subprocess-command-to-buffer "vmsproc")
-
- (setq dired-subdir-regexp "^ *Directory \\([][:.A-Z-0-9_$;<>]+\\)\\(\\)[\n\r]")
-
- (defconst dired-vms-filename-regexp
- "\\(\\([_A-Z0-9$]?\\|[_A-Z0-9$][_A-Z0-9$---]*\\)\\.[_A-Z0-9$---]*;+[0-9]*\\)"
- "Regular expression to match for a valid VMS file name in Dired buffer.
- Stupid freaking bug! Position of _ and $ shouldn't matter but they do.
- Having [A-Z0-9$_] bombs on filename _$$CHANGE_LOG$.TXT$ and $CHANGE_LOG$.TX
- Other orders of $ and _ seem to all work just fine.")
-
- (setq dired-re-mark "^[^ \n\t]")
-
- (defvar dired-directory-command
- "DIRECTORY/SIZE/DATE/PROT"
- "Directory command for dired under VMS.")
-
- ;; requires vmsproc.el to work
- (defun dired-ls (file switches &optional wildcard full-directory-p)
- "Insert ls output of FILE,formatted according to SWITCHES.
- Optional third arg WILDCARD means treat FILE as shell wildcard.
- Optional fourth arg FULL-DIRECTORY-P means file is a directory and
- switches do not contain `d'.
-
- SWITCHES default to dired-listing-switches.
-
- This is the VMS version of this UNIX command.
- The SWITCHES and WILDCARD arguments are ignored.
- Uses dired-directory-command."
- (save-restriction;; Must drag point along:
- (narrow-to-region (point) (point))
- (subprocess-command-to-buffer
- (concat dired-directory-command " " file)
- (current-buffer))
- (if full-directory-p
- (goto-char (point-max))
- ;; Just the file line if no full directory required:
- (goto-char (point-min))
- (let ((case-fold-search nil))
- (re-search-forward dired-subdir-regexp)
- (re-search-forward (concat "^" dired-vms-filename-regexp)))
- (beginning-of-line)
- (delete-region (point-min) (point))
- (forward-line 1)
- (delete-region (point) (point-max)))))
-
- (defun dired-insert-headerline (dir) ; redefinition
- ;; VMS dired-ls makes its own headerline, but we must position the
- ;; cursor where dired-insert-subdir expects it.
- ;; This does not check whether the headerline matches DIR.
- (re-search-forward dired-subdir-regexp)
- (goto-char (match-end 1)))
-
-
- (defun dired-make-absolute (file &optional dir)
- ;;"Convert FILE (a pathname relative to DIR) to an absolute pathname."
- ;; This should be good enough for ange-ftp, but might easily be
- ;; redefined (for VMS?).
- ;; It should be reasonably fast, though, as it is called in
- ;; dired-get-filename.
- (concat (or dir
- (dired-current-directory)
- default-directory)
- file))
-
- (defun dired-make-relative (file &optional dir)
- ;; In VMS we don't want relative names at all because of search path
- ;; logical names. Also, we never need to raise an error when a file
- ;; `doesn't belong' in this buffer (like in the Unix case).
- file)
-
- (defun dired-in-this-tree (file dir)
- ;;"Is FILE part of the directory tree starting at DIR?"
- ;; Under VMS, file="DEV:[foo.bar]zod", dir="DEV:[foo]"
- (or (string= (substring dir -1) "\]")
- (string= (substring dir -1) "\:")
- (error "Not a directory: %s" dir))
- (string-match (concat "^" (regexp-quote (substring dir 0 -1)))
- file))
-
- (defun dired-vms-split-filename (file)
- (if (string-match;; "DEV:[DIR]FIL" \1=DEV \2=DIR \3=FIL
- "^\\([.A-Z-0-9_$;]*\\):?[[<]\\([.A-Z-0-9_$;]*\\)[]>]\\([.A-Z-0-9_$;]*\\)$"
- file)
- (mapcar '(lambda (x)
- (substring file (match-beginning x) (match-end x)))
- '(1 2 3))))
-
- ;; Must use this in dired-noselect instead of expand-file-name and
- ;; file-name-as-directory
- ;; Taken from the VMS dired version by
- ;;Roland Roberts BITNET: roberts@uornsrl
- ;; Nuclear Structure Research Lab INTERNET: rbr4@uhura.cc.rochester.edu
- ;; 271 East River Road UUCP: rochester!ur-cc!uhura!rbr4
- ;; Rochester, NY 14267 AT&T: (716) 275-8962
-
-
- (defun dired-noselect (dirname &optional switches)
- "Like M-x dired but returns the dired buffer as value, does not select it."
- (setq dirname (dired-fix-directory dirname))
- (dired-internal-noselect dirname switches))
-
- (defun dired-fix-directory (dirname)
- "Fix up dirname to be a valid directory name and return it"
- (setq dirname
- (expand-file-name (or dirname (setq dirname default-directory))))
- (let ((end (1- (length dirname)))
- bracket colon)
- (if (or (char-equal ?\] (elt dirname end))
- (char-equal ?\: (elt dirname end)))
- dirname
- (setq bracket (string-match "\\]" dirname))
- (setq colon (string-match "\\:" dirname))
- (setq end (string-match "\\.DIR" dirname (or bracket colon)))
- (if end
- (let ((newdir
- (if bracket (concat (substring dirname 0 bracket)
- ".")
- (if colon (concat (substring dirname 0 (1+ colon))
- "[")
- "["))))
- (concat newdir (substring dirname
- (1+ (or bracket colon)) end)
- "]"))
- (if bracket (substring dirname 0 (1+ bracket))
- (if colon (substring dirname 0 (1+ colon))
- default-directory))))))
-
- ;; Versions are not yet supported in dired.el (as of version 4.53):
- ;;(setq dired-file-version-regexp "[.;][0-9]+$")
-
- (defun dired-move-to-filename (&optional raise-error eol)
- "In dired, move to first char of filename on this line.
- Returns position (point) or nil if no filename on this line."
- ;; This is the VMS version.
- (or eol (setq eol (progn (end-of-line) (point))))
- (beginning-of-line)
- (if (re-search-forward (concat " " dired-vms-filename-regexp) eol t)
- (goto-char (match-beginning 1))
- (if raise-error
- (error "No file on this line")
- nil)))
-
- (defun dired-move-to-end-of-filename (&optional no-error eol)
- ;; Assumes point is at beginning of filename,
- ;; thus the rwx bit re-search-backward below will succeed in *this* line.
- ;; So, it should be called only after (dired-move-to-filename t).
- ;; case-fold-search must be nil, at least for VMS.
- ;; On failure, signals an error or returns nil.
- ;; This is the VMS version.
- (let (opoint flag ex sym hidden case-fold-search)
- (setq opoint (point))
- (or eol (setq eol (save-excursion (end-of-line) (point))))
- (setq hidden (and selective-display
- (save-excursion (search-forward "\r" eol t))))
- (if hidden
- nil
- (re-search-forward dired-vms-filename-regexp eol t))
- (or no-error
- (not (eq opoint (point)))
- (error (if hidden
- (substitute-command-keys
- "File line is hidden, type \\[dired-hide-subdir] to unhide")
- "No file on this line")))
- (if (eq opoint (point))
- nil
- (point))))
-
- (defun dired-tree-lessp (dir1 dir2)
- (setq dir1 (substring (file-name-as-directory dir1) 0 -1)
- dir2 (substring (file-name-as-directory dir2) 0 -1))
- (let ((components-1 (dired-split "[:.]" dir1))
- (components-2 (dired-split "[:.]" dir2)))
- (while (and components-1
- components-2
- (equal (car components-1) (car components-2)))
- (setq components-1 (cdr components-1)
- components-2 (cdr components-2)))
- (let ((c1 (car components-1))
- (c2 (car components-2)))
-
- (cond ((and c1 c2)
- (string-lessp c1 c2))
- ((and (null c1) (null c2))
- nil) ; they are equal, not lessp
- ((null c1) ; c2 is a subdir of c1: c1<c2
- t)
- ((null c2) ; c1 is a subdir of c2: c1>c2
- nil)
- (t (error "This can't happen"))))))
-
- (defun dired-insert-subdir-validate (dirname)
- (let ((alist dired-subdir-alist)
- (found nil)
- item)
- (while (and alist (not found))
- (setq item (car alist)
- alist (cdr alist))
- (setq found (dired-in-this-tree dirname (car item))))
- (if (not found)
- (error "%s: directory not in this buffer" dirname))))
-
- (defun dired-insert-subdir-newpos (new-dir)
- ;; Find pos for new subdir, according to tree order.
- (let ((alist (reverse dired-subdir-alist)) elt dir pos new-pos found)
- (while alist
- (setq elt (car alist)
- alist (cdr alist)
- dir (car elt)
- pos (dired-get-subdir-min elt))
- (if (or (and found
- (or (dired-in-this-tree dir found)
- (setq alist nil)))
- (and (dired-in-this-tree new-dir dir)
- (setq found dir)))
- (if (dired-tree-lessp dir new-dir)
- ;; Insert NEW-DIR after DIR
- (setq new-pos (dired-get-subdir-max elt)))))
- (goto-char new-pos))
- ;; want a separating newline between subdirs
- (or (eobp)
- (forward-line -1))
- (insert "\n")
- (point))
-
- (defun dired-between-files ()
- (save-excursion
- (beginning-of-line)
- (or (equal (following-char) 9)
- (progn (forward-char 2)
- (or (looking-at "Total of")
- (equal (following-char) 32))))))
-
- (defun dired-buffers-for-dir (dir)
- ;; Return a list of buffers that dired DIR (top level or in-situ subdir).
- ;; The list is in reverse order of buffer creation, most recent last.
- ;; As a side effect, killed dired buffers for DIR are removed from
- ;; dired-buffers.
- (setq dir (file-name-as-directory dir))
- (let ((alist dired-buffers) result elt)
- (while alist
- (setq elt (car alist))
- ;; In Unix we only looked into the buffer when
- ;; (dired-in-this-tree dir (car elt)) returned non-nil.
- ;; In VMS we have to look into each buffer because it doesn't
- ;; necessarily contain only the tree starting at the top level directory
- (let ((buf (cdr elt)))
- (if (buffer-name buf)
- (if (assoc dir (save-excursion
- (set-buffer buf)
- dired-subdir-alist))
- (setq result (cons buf result)))
- ;; else buffer is killed - clean up:
- (setq dired-buffers (delq elt dired-buffers))))
- (setq alist (cdr alist)))
- result))
-