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comparison lisp/url/url-file.el @ 70:131b0175ea99 r20-0b30

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date Mon, 13 Aug 2007 09:02:59 +0200
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69:804d1389bcd6 70:131b0175ea99
1 ;;; url-file.el,v --- File retrieval code
2 ;; Author: wmperry
3 ;; Created: 1996/05/28 02:46:51
4 ;; Version: 1.12
5 ;; Keywords: comm, data, processes
6
7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
8 ;;; Copyright (c) 1993, 1994, 1995 by William M. Perry (wmperry@spry.com)
9 ;;;
10 ;;; This file is not part of GNU Emacs, but the same permissions apply.
11 ;;;
12 ;;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;;; it under the terms of the GNU General Public License as published by
14 ;;; the Free Software Foundation; either version 2, or (at your option)
15 ;;; any later version.
16 ;;;
17 ;;; GNU Emacs is distributed in the hope that it will be useful,
18 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;;; GNU General Public License for more details.
21 ;;;
22 ;;; You should have received a copy of the GNU General Public License
23 ;;; along with GNU Emacs; see the file COPYING. If not, write to
24 ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
25 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
26
27 (require 'url-vars)
28 (require 'url-parse)
29
30 (defun url-insert-possibly-compressed-file (fname &rest args)
31 ;; Insert a file into a buffer, checking for compressed versions.
32 (let ((compressed nil)
33 ;;
34 ;; F*** *U** **C* ***K!!!
35 ;; We cannot just use insert-file-contents-literally here, because
36 ;; then we would lose big time with ange-ftp. *sigh*
37 (crypt-encoding-alist nil)
38 (jka-compr-compression-info-list nil)
39 (jam-zcat-filename-list nil)
40 (file-coding-system-for-read
41 (if (featurep 'mule)
42 *noconv*)))
43 (setq compressed
44 (cond
45 ((file-exists-p fname) nil)
46 ((file-exists-p (concat fname ".Z"))
47 (setq fname (concat fname ".Z")))
48 ((file-exists-p (concat fname ".gz"))
49 (setq fname (concat fname ".gz")))
50 ((file-exists-p (concat fname ".z"))
51 (setq fname (concat fname ".z")))
52 (t
53 (error "File not found %s" fname))))
54 (if (or (not compressed) url-inhibit-uncompression)
55 (apply 'insert-file-contents fname args)
56 (let* ((extn (url-file-extension fname))
57 (code (cdr-safe (assoc extn url-uncompressor-alist)))
58 (decoder (cdr-safe (assoc code mm-content-transfer-encodings))))
59 (cond
60 ((null decoder)
61 (apply 'insert-file-contents fname args))
62 ((stringp decoder)
63 (apply 'insert-file-contents fname args)
64 (message "Decoding...")
65 (call-process-region (point-min) (point-max) decoder t t nil)
66 (message "Decoding... done."))
67 ((listp decoder)
68 (apply 'call-process-region (point-min) (point-max)
69 (car decoder) t t t (cdr decoder)))
70 ((and (symbolp decoder) (fboundp decoder))
71 (apply 'insert-file-contents fname args)
72 (message "Decoding...")
73 (funcall decoder (point-min) (point-max))
74 (message "Decoding... done."))
75 (t
76 (error "Malformed entry for %s in `mm-content-transfer-encodings'"
77 code))))))
78 (set-buffer-modified-p nil))
79
80 (defun url-format-directory (dir)
81 ;; Format the files in DIR into hypertext
82 (let ((files (directory-files dir nil)) file
83 div attr mod-time size typ title)
84 (if (and url-directory-index-file
85 (file-exists-p (expand-file-name url-directory-index-file dir))
86 (file-readable-p (expand-file-name url-directory-index-file dir)))
87 (save-excursion
88 (set-buffer url-working-buffer)
89 (erase-buffer)
90 (insert-file-contents-literally
91 (expand-file-name url-directory-index-file dir)))
92 (save-excursion
93 (if (string-match "/\\([^/]+\\)/$" dir)
94 (setq title (concat ".../" (url-match dir 1) "/"))
95 (setq title "/"))
96 (setq div (1- (length files)))
97 (set-buffer url-working-buffer)
98 (erase-buffer)
99 (insert "<html>\n"
100 " <head>\n"
101 " <title>" title "</title>\n"
102 " </head>\n"
103 " <body>\n"
104 " <div>\n"
105 " <h1 align=center> Index of " title "</h1>\n"
106 (if url-forms-based-ftp
107 " <form method=mget enctype=application/batch-fetch>\n"
108 "")
109 " <pre>\n"
110 " Name Last modified Size\n</pre>"
111 "<hr>\n <pre>\n")
112 (while files
113 (url-lazy-message "Building directory list... (%d%%)"
114 (/ (* 100 (- div (length files))) div))
115 (setq file (expand-file-name (car files) dir)
116 attr (file-attributes file)
117 file (car files)
118 mod-time (nth 5 attr)
119 size (nth 7 attr)
120 typ (or (mm-extension-to-mime (url-file-extension file)) ""))
121 (setq file (url-hexify-string file))
122 (if (equal '(0 0) mod-time) ; Set to null if unknown or
123 (setq mod-time "Unknown ")
124 (setq mod-time (current-time-string mod-time)))
125 (if (or (equal size 0) (equal size -1) (null size))
126 (setq size " -")
127 (setq size
128 (cond
129 ((< size 1024) (concat " " "1K"))
130 ((< size 1048576) (concat " "
131 (int-to-string
132 (max 1 (/ size 1024))) "K"))
133 (t
134 (let* ((megs (max 1 (/ size 1048576)))
135 (kilo (/ (- size (* megs 1048576)) 1024)))
136 (concat " " (int-to-string megs)
137 (if (> kilo 0)
138 (concat "." (int-to-string kilo))
139 "") "M"))))))
140 (cond
141 ((or (equal "." (car files))
142 (equal "/.." (car files)))
143 nil)
144 ((equal ".." (car files))
145 (if (not (= ?/ (aref file (1- (length file)))))
146 (setq file (concat file "/")))
147 (insert (if url-forms-based-ftp " " "")
148 "[DIR] <a href=\"" file "\">Parent directory</a>\n"))
149 ((stringp (nth 0 attr)) ; Symbolic link handling
150 (insert (if url-forms-based-ftp " " "")
151 "[LNK] <a href=\"./" file "\">" (car files) "</a>"
152 (make-string (max 0 (- 25 (length (car files)))) ? )
153 mod-time size "\n"))
154 ((nth 0 attr) ; Directory handling
155 (insert (if url-forms-based-ftp " " "")
156 "[DIR] <a href=\"./" file "/\">" (car files) "</a>"
157 (make-string (max 0 (- 25 (length (car files)))) ? )
158 mod-time size "\n"))
159 ((string-match "image" typ)
160 (insert (if url-forms-based-ftp
161 (concat "<input type=checkbox name=file value=\""
162 (car files) "\">")
163 "")
164 "[IMG] <a href=\"./" file "\">" (car files) "</a>"
165 (make-string (max 0 (- 25 (length (car files)))) ? )
166 mod-time size "\n"))
167 ((string-match "application" typ)
168 (insert (if url-forms-based-ftp
169 (concat "<input type=checkbox name=file value=\""
170 (car files) "\">")
171 "")
172 "[APP] <a href=\"./" file "\">" (car files) "</a>"
173 (make-string (max 0 (- 25 (length (car files)))) ? )
174 mod-time size "\n"))
175 ((string-match "text" typ)
176 (insert (if url-forms-based-ftp
177 (concat "<input type=checkbox name=file value=\""
178 (car files) "\">")
179 "")
180 "[TXT] <a href=\"./" file "\">" (car files) "</a>"
181 (make-string (max 0 (- 25 (length (car files)))) ? )
182 mod-time size "\n"))
183 (t
184 (insert (if url-forms-based-ftp
185 (concat "<input type=checkbox name=file value=\""
186 (car files) "\">")
187 "")
188 "[UNK] <a href=\"./" file "\">" (car files) "</a>"
189 (make-string (max 0 (- 25 (length (car files)))) ? )
190 mod-time size "\n")))
191 (setq files (cdr files)))
192 (insert " </pre>\n"
193 (if url-forms-based-ftp
194 (concat " <input type=submit value=\"Copy files\">\n"
195 " </form>\n")
196 "")
197 " </div>\n"
198 " </body>\n"
199 "</html>\n"
200 "<!-- Automatically generated by URL v" url-version
201 " -->\n")))))
202
203 (defun url-host-is-local-p (host)
204 "Return t iff HOST references our local machine."
205 (let ((case-fold-search t))
206 (or
207 (null host)
208 (string= "" host)
209 (equal (downcase host) (downcase (system-name)))
210 (and (string-match "^localhost$" host) t)
211 (and (not (string-match (regexp-quote ".") host))
212 (equal (downcase host) (if (string-match (regexp-quote ".")
213 (system-name))
214 (substring (system-name) 0
215 (match-beginning 0))
216 (system-name)))))))
217
218 (defun url-file (url)
219 ;; Find a file
220 (let* ((urlobj (url-generic-parse-url url))
221 (user (url-user urlobj))
222 (site (url-host urlobj))
223 (file (url-unhex-string (url-filename urlobj)))
224 (dest (url-target urlobj))
225 (filename (if (or user (not (url-host-is-local-p site)))
226 (concat "/" (or user "anonymous") "@" site ":" file)
227 file)))
228
229 (if (and file (url-host-is-local-p site)
230 (memq system-type '(ms-windows ms-dos windows-nt os2)))
231 (let ((x (1- (length file)))
232 (y 0))
233 (while (<= y x)
234 (if (= (aref file y) ?\\ )
235 (aset file y ?/))
236 (setq y (1+ y)))))
237
238 (url-clear-tmp-buffer)
239 (cond
240 ((file-directory-p filename)
241 (if url-use-hypertext-dired
242 (progn
243 (if (string-match "/$" filename)
244 nil
245 (setq filename (concat filename "/")))
246 (if (string-match "/$" file)
247 nil
248 (setq file (concat file "/")))
249 (url-set-filename urlobj file)
250 (url-format-directory filename))
251 (progn
252 (if (get-buffer url-working-buffer)
253 (kill-buffer url-working-buffer))
254 (find-file filename))))
255 ((and (boundp 'w3-dump-to-disk) (symbol-value 'w3-dump-to-disk))
256 (cond
257 ((file-exists-p filename) nil)
258 ((file-exists-p (concat filename ".Z"))
259 (setq filename (concat filename ".Z")))
260 ((file-exists-p (concat filename ".gz"))
261 (setq filename (concat filename ".gz")))
262 ((file-exists-p (concat filename ".z"))
263 (setq filename (concat filename ".z")))
264 (t
265 (error "File not found %s" filename)))
266 (cond
267 ((url-host-is-local-p site)
268 (copy-file
269 filename
270 (read-file-name "Save to: " nil (url-basepath filename t)) t))
271 ((featurep 'ange-ftp)
272 (ange-ftp-copy-file-internal
273 filename
274 (expand-file-name
275 (read-file-name "Save to: " nil (url-basepath filename t))) t
276 nil t nil t))
277 ((or (featurep 'efs) (featurep 'efs-auto))
278 (let ((new (expand-file-name
279 (read-file-name "Save to: " nil
280 (url-basepath filename t)))))
281 (efs-copy-file-internal filename (efs-ftp-path filename)
282 new (efs-ftp-path new)
283 t nil 0 nil 0 nil)))
284 (t (copy-file
285 filename
286 (read-file-name "Save to: " nil (url-basepath filename t)) t)))
287 (if (get-buffer url-working-buffer)
288 (kill-buffer url-working-buffer)))
289 (t
290 (let ((viewer (mm-mime-info
291 (mm-extension-to-mime (url-file-extension file))))
292 (errobj nil))
293 (if (or url-source ; Need it in a buffer
294 (and (symbolp viewer)
295 (not (eq viewer 'w3-default-local-file)))
296 (stringp viewer))
297 (condition-case errobj
298 (url-insert-possibly-compressed-file filename t)
299 (error
300 (url-save-error errobj)
301 (url-retrieve (concat "www://error/nofile/" file))))))))
302 (setq url-current-type (if site "ftp" "file")
303 url-current-object urlobj
304 url-find-this-link dest
305 url-current-user user
306 url-current-server site
307 url-current-mime-type (mm-extension-to-mime
308 (url-file-extension file))
309 url-current-file file)))
310
311 (fset 'url-ftp 'url-file)
312
313 (provide 'url-file)