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comparison lisp/efs/efs-vos.el @ 98:0d2f883870bc r20-1b1

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Import from CVS: tag r20-1b1
author cvs
date Mon, 13 Aug 2007 09:13:56 +0200
parents 8fc7fe29b841
children 8b8b7f3559a2
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97:498bf5da1c90 98:0d2f883870bc
1 ;; -*-Emacs-Lisp-*-
2 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3 ;;
4 ;; File: efs-vos.el
5 ;; Description: VOS support for efs
6 ;; Release: $efs release: 1.15 $
7 ;; Version: $Revision: 1.1 $
8 ;; RCS:
9 ;; Author: Sandy Rutherford <sandy@ibm550.sissa.it>
10 ;; Created: Sat Apr 3 03:05:00 1993 by sandy on ibm550
11 ;; Modified: Sun Nov 27 18:45:24 1994 by sandy on gandalf
12 ;; Language: Emacs-Lisp
13 ;;
14 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
15
16 ;;; This file is part of efs. See efs.el for copyright
17 ;;; (it's copylefted) and warrranty (there isn't one) information.
18
19 ;;; The original ange-ftp VOS support was written by Joe Wells <jbw@cs.bu.edu>
20
21 ;;; Thank you to Jim Franklin <jimf%shared@uunet.uu.net> for providing
22 ;;; information on the VOS operating system.
23
24 (provide 'efs-vos)
25 (require 'efs)
26
27 (defconst efs-vos-version
28 (concat (substring "$efs release: 1.15 $" 14 -2)
29 "/"
30 (substring "$Revision: 1.1 $" 11 -2)))
31
32 ;;;;---------------------------------------------------------------
33 ;;;; VOS support for efs
34 ;;;;---------------------------------------------------------------
35
36 ;;; A legal VOS pathname is of the form:
37 ;;; %systemname#diskname>dirname>dirname>dir-or-filename
38 ;;;
39 ;;; Each of systemname, diskname, dirname, dir-or-filename can be
40 ;;; at most 32 characters.
41 ;;; Valid characters are all alpha, upper and lower case, all digits,
42 ;;; plus: @[]\^`{|}~"$+,-./:_
43 ;;; restrictions: name cannot begin with hyphen (-) or period (.)
44 ;;; name must not end with a period (.)
45 ;;; name must not contain two adjacent periods (.)
46 ;;;
47 ;;; Invalid characters are:
48 ;;; non-printing control characters
49 ;;; SPACE and DEL
50 ;;; !#%&'()*;<=>?
51 ;;; all other ascii chars
52 ;;;
53 ;;; The full pathname must be less than or equal to 256 characters.
54 ;;; VOS pathnames are CASE-SENSITIVE.
55 ;;; The may be a directory depth limitation of 10 (newer versions may have
56 ;;; eliminated this).
57
58 ;;; entry points
59
60 (efs-defun efs-fix-path vos (path &optional reverse)
61 ;; Convert PATH from UNIX-ish to VOS.
62 ;; If REVERSE given then convert from VOS to UNIX-ish.
63 ;; Does crude checking for valid path syntax, but is by no means exhaustive.
64 (efs-save-match-data
65 (if reverse
66 (if (string-match "^\\(\\(%[^#>%]+\\)?#[^>#%]+\\)?>[^>#%]" path)
67 (let ((marker (1- (match-end 0)))
68 (result "/")
69 system drive)
70 (if (match-beginning 1)
71 (if (match-beginning 2)
72 (setq system (substring path 1 (match-end 2))
73 drive (substring path (1+ (match-end 2))
74 (match-end 1)))
75 (setq drive (substring 1 (match-end 1)))))
76 (while (string-match ">" path marker)
77 (setq result (concat result
78 (substring path marker
79 (match-beginning 0))
80 "/")
81 marker (match-end 0)))
82 (if drive
83 (if system
84 (concat "/" system "/" drive result
85 (substring path marker))
86 (concat "/" drive result (substring path marker)))
87 (concat result (substring path marker))))
88 (error "Invalid VOS pathname %s" path))
89 (if (string-match "^/\\([^/]+\\)/\\([^/]+\\)/[^/]" path)
90 (let ((marker (1- (match-end 0)))
91 (result (concat "%"
92 (substring path
93 (match-beginning 1)
94 (match-end 1))
95 "#"
96 (substring path
97 (match-beginning 2)
98 (match-end 2))
99 ">")))
100 ;; I'm guessing that VOS doesn't have a directory syntax.
101 (setq path (efs-internal-directory-file-name path))
102 (while (string-match "/" path marker)
103 (setq result
104 (concat result
105 (substring path marker
106 (match-beginning 0))
107 ">")
108 marker (match-end 0)))
109 (concat result (substring path marker)))
110 (error "Cannot convert path %s to VOS." path)))))
111
112 (efs-defun efs-fix-dir-path vos (dir-path)
113 ;; Convert path from UNIX-ish to VMS ready for a DIRectory listing.
114 (cond ((string-equal dir-path "/")
115 (error "Cannot gork VOS system names"))
116 ((string-match "^/[^/]/$" dir-path)
117 (error "Cannot grok VOS devices"))
118 ((efs-fix-path 'vos dir-path))))
119
120 (defconst efs-vos-date-and-time-regexp
121 (concat
122 "\\(^\\| \\)" ; For links, this must match at the beginning of the line.
123 "[678901][0-9]-[01][0-9]-[0-3][0-9] [012][0-9]:[0-6][0-9]:[0-6][0-9] "))
124 ;; Regexp to match a VOS file line. The end of the regexp must correspond
125 ;; to the start of the filename.
126
127 (defmacro efs-vos-parse-filename ()
128 ;; Return the VOS filename on the current line of a listing.
129 ;; Assumes that the point is at the beginning of the line.
130 ;; Return nil if no filename is found.
131 (` (let ((eol (save-excursion (end-of-line) (point))))
132 (and (re-search-forward efs-vos-date-and-time-regexp eol t)
133 (buffer-substring (point) eol)))))
134
135 (efs-defun efs-parse-listing vos
136 (host user dir path &optional switches)
137 ;; Parse the current buffer which is assumed to be in MultiNet FTP dir
138 ;; format, and return a hashtable as the result. SWITCHES are never used,
139 ;; but they must be specified in the argument list for compatibility
140 ;; with the unix version of this function.
141 ;; HOST = remote host name
142 ;; USER = user name
143 ;; DIR = directory in as a full remote path
144 ;; PATH = directory in full efs path syntax
145 ;; SWITCHES = ls switches (not relevant here)
146 (goto-char (point-min))
147 (efs-save-match-data
148 (let (tbl file)
149 ;; Look file files.
150 (if (search-forward "\nFiles: " nil t)
151 (progn
152 (setq tbl (efs-make-hashtable))
153 (forward-line 1)
154 (skip-chars-forward "\n")
155 (while (setq file (efs-vos-parse-filename))
156 (efs-put-hash-entry file '(nil) tbl)
157 (forward-line 1))))
158 ;; Look for directories.
159 (if (search-forward "\nDirs: " nil t)
160 (progn
161 (or tbl (setq tbl (efs-make-hashtable)))
162 (forward-line 1)
163 (skip-chars-forward "\n")
164 (while (setq file (efs-vos-parse-filename))
165 (efs-put-hash-entry file '(t) tbl)
166 (forward-line 1))))
167 ;; Look for links
168 (if (search-forward "\nLinks: " nil t)
169 (let (link)
170 (or tbl (setq tbl (efs-make-hashtable)))
171 (forward-line 1)
172 (skip-chars-forward "\n")
173 (while (setq file (efs-vos-parse-filename))
174 (if (string-match " -> \\([^ ]+\\)" file)
175 ;; VOS puts a trailing blank after the name of a symlink
176 ;; target. Go figure...
177 (setq link (substring file (match-beginning 1) (match-end 1))
178 file (substring file 0 (match-beginning 0)))
179 (setq link "")) ; weird?
180 (efs-put-hash-entry file (list link) tbl)
181 (forward-line 1))))
182 ;; This returns nil if no headings for files, dirs, or links
183 ;; are found. In this case, we're assuming that it isn't a valid
184 ;; listing.
185 (if tbl
186 (progn
187 (efs-put-hash-entry "." '(t) tbl)
188 (efs-put-hash-entry ".." '(t) tbl)))
189 tbl)))
190
191 (efs-defun efs-allow-child-lookup vos (host user dir file)
192 ;; Returns t if FILE in directory DIR could possibly be a subdir
193 ;; according to its file-name syntax, and therefore a child listing should
194 ;; be attempted.
195 ;; Directoried don't have a size.
196 (string-match ": not a file\\.$"
197 (cdr (efs-send-size host user (concat dir file)))))
198
199 ;;; Tree Dired Support
200
201 (defconst efs-dired-vos-re-exe
202 "^. +e ")
203
204 (or (assq 'vos efs-dired-re-exe-alist)
205 (setq efs-dired-re-exe-alist
206 (cons (cons 'vos efs-dired-vos-re-exe)
207 efs-dired-re-exe-alist)))
208
209 (defconst efs-dired-vos-re-dir
210 "^. +[nsm] +[0-9]+ +[678901][0-9]-")
211
212 (or (assq 'vos efs-dired-re-dir-alist)
213 (setq efs-dired-re-dir-alist
214 (cons (cons 'vos efs-dired-vos-re-dir)
215 efs-dired-re-dir-alist)))
216
217 (efs-defun efs-dired-manual-move-to-filename vos
218 (&optional raise-error bol eol)
219 ;; In dired, move to the first char of filename on this line, where
220 ;; line can be delimited by either \r or \n.
221 ;; Returns (point) or nil if raise-error is nil and there is no
222 ;; filename on this line. In the later case, leaves the point at the
223 ;; beginning of the line.
224 ;; This version is for VOS.
225 (or eol (setq eol (save-excursion (skip-chars-forward "^\r\n") (point))))
226 (let (case-fold-search)
227 (if bol
228 (goto-char bol)
229 (skip-chars-backward "^\n\r"))
230 (if (re-search-forward efs-vos-date-and-time-regexp eol t)
231 (point)
232 (and raise-error (error "No file on this line")))))
233
234 (efs-defun efs-dired-manual-move-to-end-of-filename vos
235 (&optional no-error bol eol)
236 ;; Assumes point is at the beginning of filename.
237 ;; So, it should be called only after (dired-move-to-filename t)
238 ;; On failure signals an error, or returns nil.
239 ;; This is the VOS version.
240 (let ((opoint (point)))
241 (and selective-display
242 (null no-error)
243 (eq (char-after
244 (1- (or bol (save-excursion
245 (skip-chars-backward "^\r\n")
246 (point)))))
247 ?\r)
248 ;; File is hidden or omitted.
249 (cond
250 ((dired-subdir-hidden-p (dired-current-directory))
251 (error
252 (substitute-command-keys
253 "File line is hidden. Type \\[dired-hide-subdir] to unhide.")))
254 ((error
255 (substitute-command-keys
256 "File line is omitted. Type \\[dired-omit-toggle] to un-omit."
257 )))))
258 (skip-chars-forward "-a-zA-Z0-9@[]\\^`{|}~\"$+,./:_")
259 (if (or (= opoint (point)) (not (memq (following-char) '(?\n ?\r ?\ ))))
260 (if no-error
261 nil
262 (error "No file on this line"))
263 (point))))
264
265 (efs-defun efs-dired-fixup-listing vos (file path &optional switches wildcard)
266 ;; VOS listing contain some empty lines, which is inconvenient for dired.
267 (goto-char (point-min))
268 (skip-chars-forward "\n")
269 (delete-region (point-min) (point))
270 (while (search-forward "\n\n" nil t)
271 (forward-char -2)
272 (delete-char 1)))
273
274 (efs-defun efs-dired-ls-trim vos ()
275 ;; Trims VOS dir listings for single files, so that they are exactly one line
276 ;; long.
277 (goto-char (point-min))
278 (let (case-fold-search)
279 (re-search-forward efs-vos-date-and-time-regexp))
280 (beginning-of-line)
281 (delete-region (point-min) (point))
282 (forward-line 1)
283 (delete-region (point) (point-max)))
284
285 ;;; end of efs-vos.el