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date Mon, 13 Aug 2007 08:50:29 +0200
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1 ;; -*-Emacs-Lisp-*-
2 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3 ;;
4 ;; File: efs-mvs.el
5 ;; Release: $efs release: 1.15 $
6 ;; Version: $Revision: 1.1 $
7 ;; RCS:
8 ;; Description: MVS support for efs
9 ;; Author: Sandy Rutherford <sandy@math.ubc.ca, sandy@itp.ethz.ch>
10 ;; Created: Sat Nov 14 02:04:54 1992
11 ;; Modified: Sun Nov 27 18:37:54 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 ;;; --------------------------------------------------------
20 ;;; MVS support
21 ;;; --------------------------------------------------------
22
23 (provide 'efs-mvs)
24 (require 'efs)
25
26 (defconst efs-mvs-version
27 (concat (substring "$efs release: 1.15 $" 14 -2)
28 "/"
29 (substring "$Revision: 1.1 $" 11 -2)))
30
31 ;; What's the MVS character set for valid partitioned data sets?
32 ;; I'll guess [-A-Z0-9_$+]
33
34 ;; The top level directory in MVS contains partitioned data sets.
35 ;; We will view these as directories. The data sets within each
36 ;; partitioned data set will be viewed as files.
37 ;;
38 ;; In MVS an entry for a "sub-dir" may have the same name as a plain
39 ;; file. This is impossible in unix, so we retain the "dots" at the
40 ;; end of subdir names, to distinuguish.
41 ;; i.e. FOO.BAR --> /FOO./BAR
42
43 (efs-defun efs-send-pwd mvs (host user &optional xpwd)
44 ;; Broken quoting for PWD output on some MVS servers.
45 (let* ((result (efs-send-cmd host user '(pwd) "Getting EXPLORER PWD"))
46 (line (nth 1 result))
47 dir)
48 (and (car result)
49 (efs-save-match-data
50 (and (string-match " \"'?\\([0-9A-Z]+\\)'?\"" line)
51 (setq dir (substring line (match-beginning 1)
52 (match-end 1))))))
53 (cons dir line)))
54
55 (efs-defun efs-fix-path mvs (path &optional reverse)
56 ;; Convert PATH from UNIX-ish to MVS.
57 (efs-save-match-data
58 (if reverse
59 (let ((start 0)
60 (res "/"))
61 ;; MVS has only files, some of which are partitioned
62 ;; into smaller files (partitioned data sets). We will
63 ;; assume that path starts with a partitioned dataset.
64 (while (string-match "\\." path)
65 ;; grab the dot too, because in mvs prefixes and plain
66 ;; files can have the same name.
67 (setq res (concat res (substring path start (match-end 0)) "/")
68 start (match-end 0)))
69 (concat res (substring path start)))
70 (let ((start 1)
71 res)
72 (while (string-match "/" path start)
73 (setq res (concat res (substring path start (match-beginning 0)))
74 start (match-end 0)))
75 (concat res (substring path start))))))
76
77 (efs-defun efs-fix-dir-path mvs (dir-path)
78 ;; Convert path from UNIX-ish to MVS for a DIR listing.
79 (cond
80 ((string-equal "/" dir-path)
81 " ")
82 (t (concat (efs-fix-path 'mvs dir-path) "*"))))
83
84 (efs-defun efs-allow-child-lookup mvs (host user dir file)
85 ;; Returns t if FILE in directory DIR could possibly be a subdir
86 ;; according to its file-name syntax, and therefore a child listing should
87 ;; be attempted.
88 ;; MVS file system is flat. Only partitioned data sets are "subdirs".
89 (efs-save-match-data
90 (string-match "\\.$" file)))
91
92 (efs-defun efs-parse-listing mvs (host user dir path &optional switches)
93 ;; Guesses the type of mvs listings.
94 (efs-save-match-data
95 (goto-char (point-min))
96 (cond
97 ((looking-at "Volume ")
98 (efs-add-listing-type 'mvs:tcp host user)
99 (efs-parse-listing 'mvs:tcp host user dir path switches))
100
101 ((looking-at "[-A-Z0-9_$.+]+ ")
102 (efs-add-listing-type 'mvs:nih host user)
103 (efs-parse-listing 'mvs:nih host user dir path switches))
104
105 (t
106 ;; Since MVS works on a template system, return an empty hashtable.
107 (let ((tbl (efs-make-hashtable)))
108 (efs-put-hash-entry "." '(t) tbl)
109 (efs-put-hash-entry ".." '(t) tbl)
110 tbl)))))
111
112 (efs-defun efs-ls-dumb-check mvs (line host file path lsargs msg noparse
113 noerror nowait cont)
114 ;; Because of the template structure of the MVS file system, empty
115 ;; directories are the same as non-existent. It's better for us to treat
116 ;; them as empty.
117 (and (string-match "^550 " line)
118 (let ((parse (or (null noparse) (eq noparse 'parse)
119 (efs-parsable-switches-p lsargs t))))
120 (efs-add-to-ls-cache file lsargs "\n" parse)
121 (if parse
122 (efs-set-files file (let ((tbl (efs-make-hashtable)))
123 (efs-put-hash-entry "." '(t) tbl)
124 (efs-put-hash-entry ".." '(t) tbl)
125 tbl)))
126 (if nowait
127 (progn
128 (if cont
129 (efs-call-cont cont "\n"))
130 t)
131 (if cont
132 (efs-call-cont cont "\n"))
133 "\n"))))
134
135 ;;;; ----------------------------------------------------
136 ;;;; Support for the NIH FTP server.
137 ;;;; ----------------------------------------------------
138
139 (efs-defun efs-parse-listing mvs:nih
140 (host user dir path &optional switches)
141 ;; Parse the current buffer which is assumed to be an MVS listing
142 ;; Based on the listing format of the NIH server. Hope that this format
143 ;; is widespread. If a directory doesn't exist, get a 426 ftp error.
144 ;; HOST = remote host name
145 ;; USER = user name
146 ;; DIR = directory as a remote full path
147 ;; PATH = directory in full efs-syntax
148 (let ((tbl (efs-make-hashtable))
149 (top-p (string-equal "/" dir))
150 ;; assume that everything top-level is a partitioned data set
151 )
152 (goto-char (point-min))
153 (efs-save-match-data
154 (while (re-search-forward "^[-A-Z0-9_$.+]+" nil t)
155 (efs-put-hash-entry
156 (concat (buffer-substring (match-beginning 0) (match-end 0))
157 (and top-p "."))
158 (list top-p) tbl)
159 (forward-line 1))
160 (efs-put-hash-entry "." '(t) tbl)
161 (or top-p (efs-put-hash-entry ".." '(t) tbl)))
162 tbl))
163
164 ;;; Tree dired support
165
166 (defconst efs-dired-mvs-re-exe
167 "^. [-A-Z0-9_$+]+\\.EXE "
168 "Regular expression to use to search for MVS executables.")
169
170 (or (assq 'mvs:nih efs-dired-re-exe-alist)
171 (setq efs-dired-re-exe-alist
172 (cons (cons 'mvs:nih efs-dired-mvs-re-exe)
173 efs-dired-re-exe-alist)))
174
175 (efs-defun efs-dired-insert-headerline mvs:nih (dir)
176 ;; MVS has no total line, so we insert a blank line for
177 ;; aesthetics.
178 (insert "\n")
179 (forward-char -1)
180 (efs-real-dired-insert-headerline dir))
181
182 (efs-defun efs-dired-manual-move-to-filename mvs:nih
183 (&optional raise-error bol eol)
184 ;; In dired, move to the first char of the filename on this line.
185 ;; This is the MVS version.
186 (or eol (setq eol (save-excursion (skip-chars-forward "^\n\r") (point))))
187 (let (case-fold-search)
188 (if bol
189 (goto-char bol)
190 (skip-chars-backward "^\n\r")
191 (setq bol (point)))
192 ;; MVS listings are pretty loose. Tough to tell when we've got a file line.
193 (if (and
194 (> (- eol bol) 2)
195 (progn
196 (forward-char 2)
197 (skip-chars-forward " \t")
198 (looking-at "[-A-Z0-9$_.+]+[ \n\r]")))
199 (point)
200 (goto-char bol)
201 (and raise-error (error "No file on this line")))))
202
203 (efs-defun efs-dired-manual-move-to-end-of-filename mvs:nih
204 (&optional no-error bol eol)
205 ;; Assumes point is at the beginning of filename.
206 ;; So, it should be called only after (dired-move-to-filename t).
207 ;; case-fold-search must be nil, at least for VMS.
208 ;; On failure, signals an error or returns nil.
209 ;; This is the MVS version.
210 (let ((opoint (point)))
211 (and selective-display
212 (null no-error)
213 (eq (char-after
214 (1- (or bol (save-excursion
215 (skip-chars-backward "^\r\n")
216 (point)))))
217 ?\r)
218 ;; File is hidden or omitted.
219 (cond
220 ((dired-subdir-hidden-p (dired-current-directory))
221 (error
222 (substitute-command-keys
223 "File line is hidden. Type \\[dired-hide-subdir] to unhide.")))
224 ((error
225 (substitute-command-keys
226 "File line is omitted. Type \\[dired-omit-toggle] to un-omit."
227 )))))
228 (skip-chars-forward "-A-Z0-9$_.+" eol)
229 (if (or (= opoint (point)) (not (memq (following-char) '(?\n ?\r ?\ ))))
230 (if no-error
231 nil
232 (error "No file on this line"))
233 (point))))
234
235 (efs-defun efs-dired-get-filename mvs:nih
236 (&optional localp no-error-if-not-filep)
237 (let ((name (efs-real-dired-get-filename localp no-error-if-not-filep))
238 (parsed (efs-ftp-path (dired-current-directory))))
239 (if (and name (string-equal "/" (nth 2 parsed)))
240 (concat name ".")
241 name)))
242
243 (efs-defun efs-dired-fixup-listing mvs:nih
244 (file path &optional switches wildcard)
245 ;; MVS listings have trailing spaces to 80 columns.
246 ;; Can lead to a mess after indentation.
247 (goto-char (point-min))
248 (while (re-search-forward " +$" nil t)
249 (replace-match "")))
250
251 ;;;; -------------------------------------------------------
252 ;;;; Support for the TCPFTP MVS server
253 ;;;; -------------------------------------------------------
254 ;;;
255 ;;; For TCPFTP IBM MVS V2R2.1 Does it really work?
256
257 (efs-defun efs-parse-listing mvs:tcp
258 (host user dir path &optional switches)
259 ;; Parse the current buffer which is assumed to be an MVS listing
260 ;; Based on the listing format of the NIH server. Hope that this format
261 ;; is widespread. If a directory doesn't exist, get a 426 ftp error.
262 ;; HOST = remote host name
263 ;; USER = user name
264 ;; DIR = directory as a remote full path
265 ;; PATH = directory in full efs-syntax
266 (efs-save-match-data
267 (goto-char (point-min))
268 (and (looking-at "Volume ")
269 (let ((top-tbl (efs-make-hashtable))
270 (case-fold (memq 'mvs efs-case-insensitive-host-types))
271 tbl-list file dn fn tbl dir-p)
272 (forward-line 1)
273 (while (not (eobp))
274 (end-of-line)
275 (setq file (buffer-substring (point)
276 (progn (skip-chars-backward "^ ")
277 (point)))
278 dn path
279 dir-p (string-match "\\." file))
280 (efs-put-hash-entry file '(nil) top-tbl)
281 (if dir-p
282 (progn
283 (setq dir-p (1+ dir-p)
284 fn (substring file 0 dir-p))
285 (efs-put-hash-entry fn '(t) top-tbl)
286 (while dir-p
287 (setq dn (efs-internal-file-name-as-directory nil
288 (concat dn fn))
289 file (substring file dir-p)
290 tbl (cdr (assoc dn tbl-list)))
291 (or tbl (setq tbl (efs-make-hashtable)
292 tbl-list (cons (cons dn tbl) tbl-list)))
293 (efs-put-hash-entry file '(nil) tbl)
294 (setq dir-p (string-match "\\." file))
295 (if dir-p
296 (progn
297 (setq dir-p (1+ dir-p)
298 fn (substring file 0 dir-p))
299 (efs-put-hash-entry fn '(t) tbl))))))
300 (forward-line 1))
301 (while tbl-list
302 (efs-put-hash-entry (car (car tbl-list)) (cdr (car tbl-list))
303 efs-files-hashtable case-fold)
304 (setq tbl-list (cdr tbl-list)))
305 top-tbl))))
306
307 ;;; Tree Dired
308
309 (efs-defun efs-dired-manual-move-to-filename mvs:tcp
310 (&optional raise-error bol eol)
311 ;; In dired, move to the first char of the filename on this line.
312 ;; This is the MVS version.
313 (or eol (setq eol (save-excursion (skip-chars-forward "^\n\r") (point))))
314 (let (case-fold-search)
315 (if bol
316 (goto-char bol)
317 (skip-chars-backward "^\n\r")
318 (setq bol (point)))
319 (if (and (re-search-forward " [0-9][0-9]/[0-9][0-9]/[0-9][0-9] " eol t)
320 (progn
321 (goto-char eol)
322 (skip-chars-backward "-A-Z0-9$_.")
323 (char-equal (preceding-char) ?\ ))
324 (/= eol (point)))
325 (point)
326 (goto-char bol)
327 (and raise-error (error "No file on this line")))))
328
329 (efs-defun efs-dired-manual-move-to-end-of-filename mvs:tcp
330 (&optional no-error bol eol)
331 ;; Assumes point is at the beginning of filename.
332 ;; So, it should be called only after (dired-move-to-filename t).
333 ;; case-fold-search must be nil, at least for VMS.
334 ;; On failure, signals an error or returns nil.
335 ;; This is the MVS version.
336 (let ((opoint (point)))
337 (and selective-display
338 (null no-error)
339 (eq (char-after
340 (1- (or bol (save-excursion
341 (skip-chars-backward "^\r\n")
342 (point)))))
343 ?\r)
344 ;; File is hidden or omitted.
345 (cond
346 ((dired-subdir-hidden-p (dired-current-directory))
347 (error
348 (substitute-command-keys
349 "File line is hidden. Type \\[dired-hide-subdir] to unhide.")))
350 ((error
351 (substitute-command-keys
352 "File line is omitted. Type \\[dired-omit-toggle] to un-omit."
353 )))))
354 (skip-chars-forward "-A-Z0-9$_.+" eol)
355 (if (or (= opoint (point)) (not (memq (following-char) '(?\n ?\r ?\ ))))
356 (if no-error
357 nil
358 (error "No file on this line"))
359 (point))))
360
361 ;;; end of efs-mvs.el