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8c8b8430 | 1 | ;;; url-util.el --- Miscellaneous helper routines for URL library |
a2fd1462 | 2 | |
71ddfde5 | 3 | ;; Copyright (C) 1996, 1997, 1998, 1999, 2001, 2004, |
12dc447f | 4 | ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
a2fd1462 | 5 | |
8c8b8430 | 6 | ;; Author: Bill Perry <wmperry@gnu.org> |
8c8b8430 SM |
7 | ;; Keywords: comm, data, processes |
8 | ||
a2fd1462 SM |
9 | ;; This file is part of GNU Emacs. |
10 | ;; | |
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
8c0ee52a | 13 | ;; the Free Software Foundation; either version 3, or (at your option) |
a2fd1462 SM |
14 | ;; any later version. |
15 | ;; | |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ;; | |
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
4fc5845f LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
a2fd1462 SM |
25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;;; Code: | |
8c8b8430 SM |
29 | |
30 | (require 'url-parse) | |
26d72be8 | 31 | (eval-when-compile (require 'cl)) |
8c8b8430 SM |
32 | (autoload 'timezone-parse-date "timezone") |
33 | (autoload 'timezone-make-date-arpa-standard "timezone") | |
c6bfe6e7 | 34 | (autoload 'mail-header-extract "mailheader") |
8c8b8430 SM |
35 | |
36 | (defvar url-parse-args-syntax-table | |
37 | (copy-syntax-table emacs-lisp-mode-syntax-table) | |
38 | "A syntax table for parsing sgml attributes.") | |
39 | ||
40 | (modify-syntax-entry ?' "\"" url-parse-args-syntax-table) | |
41 | (modify-syntax-entry ?` "\"" url-parse-args-syntax-table) | |
42 | (modify-syntax-entry ?{ "(" url-parse-args-syntax-table) | |
43 | (modify-syntax-entry ?} ")" url-parse-args-syntax-table) | |
44 | ||
45 | ;;;###autoload | |
46 | (defcustom url-debug nil | |
47 | "*What types of debug messages from the URL library to show. | |
48 | Debug messages are logged to the *URL-DEBUG* buffer. | |
49 | ||
50 | If t, all messages will be logged. | |
51 | If a number, all messages will be logged, as well shown via `message'. | |
52 | If a list, it is a list of the types of messages to be logged." | |
53 | :type '(choice (const :tag "none" nil) | |
54 | (const :tag "all" t) | |
55 | (checklist :tag "custom" | |
56 | (const :tag "HTTP" :value http) | |
57 | (const :tag "DAV" :value dav) | |
58 | (const :tag "General" :value retrieval) | |
59 | (const :tag "Filename handlers" :value handlers) | |
60 | (symbol :tag "Other"))) | |
61 | :group 'url-hairy) | |
62 | ||
63 | ;;;###autoload | |
64 | (defun url-debug (tag &rest args) | |
65 | (if quit-flag | |
66 | (error "Interrupted!")) | |
67 | (if (or (eq url-debug t) | |
68 | (numberp url-debug) | |
69 | (and (listp url-debug) (memq tag url-debug))) | |
a2fd1462 | 70 | (with-current-buffer (get-buffer-create "*URL-DEBUG*") |
8c8b8430 SM |
71 | (goto-char (point-max)) |
72 | (insert (symbol-name tag) " -> " (apply 'format args) "\n") | |
73 | (if (numberp url-debug) | |
74 | (apply 'message args))))) | |
75 | ||
76 | ;;;###autoload | |
77 | (defun url-parse-args (str &optional nodowncase) | |
78 | ;; Return an assoc list of attribute/value pairs from an RFC822-type string | |
79 | (let ( | |
80 | name ; From name= | |
81 | value ; its value | |
82 | results ; Assoc list of results | |
83 | name-pos ; Start of XXXX= position | |
84 | val-pos ; Start of value position | |
85 | st | |
86 | nd | |
87 | ) | |
88 | (save-excursion | |
89 | (save-restriction | |
90 | (set-buffer (get-buffer-create " *urlparse-temp*")) | |
91 | (set-syntax-table url-parse-args-syntax-table) | |
92 | (erase-buffer) | |
93 | (insert str) | |
94 | (setq st (point-min) | |
95 | nd (point-max)) | |
96 | (set-syntax-table url-parse-args-syntax-table) | |
97 | (narrow-to-region st nd) | |
98 | (goto-char (point-min)) | |
99 | (while (not (eobp)) | |
100 | (skip-chars-forward "; \n\t") | |
101 | (setq name-pos (point)) | |
102 | (skip-chars-forward "^ \n\t=;") | |
103 | (if (not nodowncase) | |
104 | (downcase-region name-pos (point))) | |
105 | (setq name (buffer-substring name-pos (point))) | |
106 | (skip-chars-forward " \t\n") | |
107 | (if (/= (or (char-after (point)) 0) ?=) ; There is no value | |
108 | (setq value nil) | |
109 | (skip-chars-forward " \t\n=") | |
110 | (setq val-pos (point) | |
111 | value | |
112 | (cond | |
113 | ((or (= (or (char-after val-pos) 0) ?\") | |
114 | (= (or (char-after val-pos) 0) ?')) | |
115 | (buffer-substring (1+ val-pos) | |
116 | (condition-case () | |
117 | (prog2 | |
118 | (forward-sexp 1) | |
119 | (1- (point)) | |
120 | (skip-chars-forward "\"")) | |
121 | (error | |
122 | (skip-chars-forward "^ \t\n") | |
123 | (point))))) | |
124 | (t | |
125 | (buffer-substring val-pos | |
126 | (progn | |
127 | (skip-chars-forward "^;") | |
128 | (skip-chars-backward " \t") | |
129 | (point))))))) | |
130 | (setq results (cons (cons name value) results)) | |
131 | (skip-chars-forward "; \n\t")) | |
132 | results)))) | |
133 | ||
134 | ;;;###autoload | |
135 | (defun url-insert-entities-in-string (string) | |
136 | "Convert HTML markup-start characters to entity references in STRING. | |
137 | Also replaces the \" character, so that the result may be safely used as | |
138 | an attribute value in a tag. Returns a new string with the result of the | |
139 | conversion. Replaces these characters as follows: | |
140 | & ==> & | |
141 | < ==> < | |
142 | > ==> > | |
143 | \" ==> "" | |
144 | (if (string-match "[&<>\"]" string) | |
145 | (save-excursion | |
146 | (set-buffer (get-buffer-create " *entity*")) | |
147 | (erase-buffer) | |
148 | (buffer-disable-undo (current-buffer)) | |
149 | (insert string) | |
150 | (goto-char (point-min)) | |
151 | (while (progn | |
152 | (skip-chars-forward "^&<>\"") | |
153 | (not (eobp))) | |
154 | (insert (cdr (assq (char-after (point)) | |
155 | '((?\" . """) | |
156 | (?& . "&") | |
157 | (?< . "<") | |
158 | (?> . ">"))))) | |
159 | (delete-char 1)) | |
160 | (buffer-string)) | |
161 | string)) | |
162 | ||
163 | ;;;###autoload | |
164 | (defun url-normalize-url (url) | |
165 | "Return a 'normalized' version of URL. | |
166 | Strips out default port numbers, etc." | |
07e9b3f0 | 167 | (let (type data retval) |
8c8b8430 SM |
168 | (setq data (url-generic-parse-url url) |
169 | type (url-type data)) | |
170 | (if (member type '("www" "about" "mailto" "info")) | |
171 | (setq retval url) | |
d18ec89f | 172 | (setf (url-target data) nil) |
8c8b8430 SM |
173 | (setq retval (url-recreate-url data))) |
174 | retval)) | |
175 | ||
176 | ;;;###autoload | |
177 | (defun url-lazy-message (&rest args) | |
178 | "Just like `message', but is a no-op if called more than once a second. | |
a2fd1462 | 179 | Will not do anything if `url-show-status' is nil." |
8c8b8430 SM |
180 | (if (or (null url-show-status) |
181 | (active-minibuffer-window) | |
182 | (= url-lazy-message-time | |
183 | (setq url-lazy-message-time (nth 1 (current-time))))) | |
184 | nil | |
185 | (apply 'message args))) | |
186 | ||
187 | ;;;###autoload | |
188 | (defun url-get-normalized-date (&optional specified-time) | |
d626f888 TZ |
189 | "Return a 'real' date string that most HTTP servers can understand." |
190 | (let ((system-time-locale "C")) | |
191 | (format-time-string "%a, %d %b %Y %T GMT" | |
192 | (or specified-time (current-time)) t))) | |
8c8b8430 SM |
193 | |
194 | ;;;###autoload | |
195 | (defun url-eat-trailing-space (x) | |
196 | "Remove spaces/tabs at the end of a string." | |
197 | (let ((y (1- (length x))) | |
198 | (skip-chars (list ? ?\t ?\n))) | |
199 | (while (and (>= y 0) (memq (aref x y) skip-chars)) | |
200 | (setq y (1- y))) | |
201 | (substring x 0 (1+ y)))) | |
202 | ||
203 | ;;;###autoload | |
204 | (defun url-strip-leading-spaces (x) | |
205 | "Remove spaces at the front of a string." | |
206 | (let ((y (1- (length x))) | |
207 | (z 0) | |
208 | (skip-chars (list ? ?\t ?\n))) | |
209 | (while (and (<= z y) (memq (aref x z) skip-chars)) | |
210 | (setq z (1+ z))) | |
211 | (substring x z nil))) | |
212 | ||
213 | ;;;###autoload | |
214 | (defun url-pretty-length (n) | |
215 | (cond | |
216 | ((< n 1024) | |
217 | (format "%d bytes" n)) | |
218 | ((< n (* 1024 1024)) | |
219 | (format "%dk" (/ n 1024.0))) | |
220 | (t | |
221 | (format "%2.2fM" (/ n (* 1024 1024.0)))))) | |
222 | ||
223 | ;;;###autoload | |
224 | (defun url-display-percentage (fmt perc &rest args) | |
48d2bac4 MH |
225 | (when url-show-status |
226 | (if (null fmt) | |
227 | (if (fboundp 'clear-progress-display) | |
228 | (clear-progress-display)) | |
229 | (if (and (fboundp 'progress-display) perc) | |
230 | (apply 'progress-display fmt perc args) | |
231 | (apply 'message fmt args))))) | |
8c8b8430 SM |
232 | |
233 | ;;;###autoload | |
234 | (defun url-percentage (x y) | |
235 | (if (fboundp 'float) | |
236 | (round (* 100 (/ x (float y)))) | |
237 | (/ (* x 100) y))) | |
238 | ||
239 | ;;;###autoload | |
76fb5862 RS |
240 | (defun url-file-directory (file) |
241 | "Return the directory part of FILE, for a URL." | |
8c8b8430 SM |
242 | (cond |
243 | ((null file) "") | |
244 | ((string-match (eval-when-compile (regexp-quote "?")) file) | |
76fb5862 | 245 | (file-name-directory (substring file 0 (match-beginning 0)))) |
8c8b8430 SM |
246 | (t (file-name-directory file)))) |
247 | ||
76fb5862 RS |
248 | ;;;###autoload |
249 | (defun url-file-nondirectory (file) | |
250 | "Return the nondirectory part of FILE, for a URL." | |
251 | (cond | |
252 | ((null file) "") | |
253 | ((string-match (eval-when-compile (regexp-quote "?")) file) | |
254 | (file-name-nondirectory (substring file 0 (match-beginning 0)))) | |
255 | (t (file-name-nondirectory file)))) | |
256 | ||
8c8b8430 | 257 | ;;;###autoload |
6fd388f3 | 258 | (defun url-parse-query-string (query &optional downcase allow-newlines) |
8c8b8430 SM |
259 | (let (retval pairs cur key val) |
260 | (setq pairs (split-string query "&")) | |
261 | (while pairs | |
262 | (setq cur (car pairs) | |
263 | pairs (cdr pairs)) | |
264 | (if (not (string-match "=" cur)) | |
265 | nil ; Grace | |
6fd388f3 CY |
266 | (setq key (url-unhex-string (substring cur 0 (match-beginning 0)) |
267 | allow-newlines)) | |
268 | (setq val (url-unhex-string (substring cur (match-end 0) nil) | |
269 | allow-newlines)) | |
8c8b8430 SM |
270 | (if downcase |
271 | (setq key (downcase key))) | |
272 | (setq cur (assoc key retval)) | |
273 | (if cur | |
274 | (setcdr cur (cons val (cdr cur))) | |
275 | (setq retval (cons (list key val) retval))))) | |
276 | retval)) | |
277 | ||
278 | (defun url-unhex (x) | |
279 | (if (> x ?9) | |
280 | (if (>= x ?a) | |
281 | (+ 10 (- x ?a)) | |
282 | (+ 10 (- x ?A))) | |
283 | (- x ?0))) | |
284 | ||
c6bfe6e7 SM |
285 | ;; Fixme: Is this definition better, and does it ever matter? |
286 | ||
287 | ;; (defun url-unhex-string (str &optional allow-newlines) | |
288 | ;; "Remove %XX, embedded spaces, etc in a url. | |
289 | ;; If optional second argument ALLOW-NEWLINES is non-nil, then allow the | |
290 | ;; decoding of carriage returns and line feeds in the string, which is normally | |
291 | ;; forbidden in URL encoding." | |
292 | ;; (setq str (or str "")) | |
293 | ;; (setq str (replace-regexp-in-string "%[[:xdigit:]]\\{2\\}" | |
294 | ;; (lambda (match) | |
295 | ;; (string (string-to-number | |
296 | ;; (substring match 1) 16))) | |
297 | ;; str t t)) | |
298 | ;; (if allow-newlines | |
299 | ;; (replace-regexp-in-string "[\n\r]" (lambda (match) | |
300 | ;; (format "%%%.2X" (aref match 0))) | |
301 | ;; str t t) | |
302 | ;; str)) | |
303 | ||
8c8b8430 SM |
304 | ;;;###autoload |
305 | (defun url-unhex-string (str &optional allow-newlines) | |
c6bfe6e7 | 306 | "Remove %XX embedded spaces, etc in a url. |
8c8b8430 SM |
307 | If optional second argument ALLOW-NEWLINES is non-nil, then allow the |
308 | decoding of carriage returns and line feeds in the string, which is normally | |
309 | forbidden in URL encoding." | |
310 | (setq str (or str "")) | |
311 | (let ((tmp "") | |
312 | (case-fold-search t)) | |
313 | (while (string-match "%[0-9a-f][0-9a-f]" str) | |
314 | (let* ((start (match-beginning 0)) | |
315 | (ch1 (url-unhex (elt str (+ start 1)))) | |
316 | (code (+ (* 16 ch1) | |
317 | (url-unhex (elt str (+ start 2)))))) | |
318 | (setq tmp (concat | |
319 | tmp (substring str 0 start) | |
320 | (cond | |
321 | (allow-newlines | |
322 | (char-to-string code)) | |
323 | ((or (= code ?\n) (= code ?\r)) | |
324 | " ") | |
325 | (t (char-to-string code)))) | |
326 | str (substring str (match-end 0))))) | |
327 | (setq tmp (concat tmp str)) | |
328 | tmp)) | |
329 | ||
330 | (defconst url-unreserved-chars | |
331 | '( | |
332 | ?a ?b ?c ?d ?e ?f ?g ?h ?i ?j ?k ?l ?m ?n ?o ?p ?q ?r ?s ?t ?u ?v ?w ?x ?y ?z | |
333 | ?A ?B ?C ?D ?E ?F ?G ?H ?I ?J ?K ?L ?M ?N ?O ?P ?Q ?R ?S ?T ?U ?V ?W ?X ?Y ?Z | |
334 | ?0 ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9 | |
335 | ?- ?_ ?. ?! ?~ ?* ?' ?\( ?\)) | |
336 | "A list of characters that are _NOT_ reserved in the URL spec. | |
337 | This is taken from RFC 2396.") | |
338 | ||
339 | ;;;###autoload | |
ecfbb488 TTN |
340 | (defun url-hexify-string (string) |
341 | "Return a new string that is STRING URI-encoded. | |
342 | First, STRING is converted to utf-8, if necessary. Then, for each | |
343 | character in the utf-8 string, those found in `url-unreserved-chars' | |
344 | are left as-is, all others are represented as a three-character | |
345 | string: \"%\" followed by two lowercase hex digits." | |
07e9b3f0 SM |
346 | ;; To go faster and avoid a lot of consing, we could do: |
347 | ;; | |
348 | ;; (defconst url-hexify-table | |
349 | ;; (let ((map (make-vector 256 nil))) | |
350 | ;; (dotimes (byte 256) (aset map byte | |
351 | ;; (if (memq byte url-unreserved-chars) | |
352 | ;; (char-to-string byte) | |
353 | ;; (format "%%%02x" byte)))) | |
354 | ;; map)) | |
355 | ;; | |
356 | ;; (mapconcat (curry 'aref url-hexify-table) ...) | |
357 | (mapconcat (lambda (byte) | |
358 | (if (memq byte url-unreserved-chars) | |
359 | (char-to-string byte) | |
360 | (format "%%%02x" byte))) | |
361 | (if (multibyte-string-p string) | |
362 | (encode-coding-string string 'utf-8) | |
363 | string) | |
ecfbb488 | 364 | "")) |
8c8b8430 SM |
365 | |
366 | ;;;###autoload | |
367 | (defun url-file-extension (fname &optional x) | |
368 | "Return the filename extension of FNAME. | |
369 | If optional variable X is t, | |
370 | then return the basename of the file with the extension stripped off." | |
371 | (if (and fname | |
76fb5862 | 372 | (setq fname (url-file-nondirectory fname)) |
8c8b8430 SM |
373 | (string-match "\\.[^./]+$" fname)) |
374 | (if x (substring fname 0 (match-beginning 0)) | |
375 | (substring fname (match-beginning 0) nil)) | |
376 | ;; | |
377 | ;; If fname has no extension, and x then return fname itself instead of | |
378 | ;; nothing. When caching it allows the correct .hdr file to be produced | |
379 | ;; for filenames without extension. | |
380 | ;; | |
381 | (if x | |
382 | fname | |
383 | ""))) | |
384 | ||
385 | ;;;###autoload | |
386 | (defun url-truncate-url-for-viewing (url &optional width) | |
387 | "Return a shortened version of URL that is WIDTH characters or less wide. | |
388 | WIDTH defaults to the current frame width." | |
389 | (let* ((fr-width (or width (frame-width))) | |
390 | (str-width (length url)) | |
8c8b8430 SM |
391 | (fname nil) |
392 | (modified 0) | |
393 | (urlobj nil)) | |
394 | ;; The first thing that can go are the search strings | |
395 | (if (and (>= str-width fr-width) | |
396 | (string-match "?" url)) | |
397 | (setq url (concat (substring url 0 (match-beginning 0)) "?...") | |
07e9b3f0 | 398 | str-width (length url))) |
8c8b8430 SM |
399 | (if (< str-width fr-width) |
400 | nil ; Hey, we are done! | |
401 | (setq urlobj (url-generic-parse-url url) | |
402 | fname (url-filename urlobj) | |
403 | fr-width (- fr-width 4)) | |
404 | (while (and (>= str-width fr-width) | |
405 | (string-match "/" fname)) | |
406 | (setq fname (substring fname (match-end 0) nil) | |
407 | modified (1+ modified)) | |
d18ec89f | 408 | (setf (url-filename urlobj) fname) |
8c8b8430 SM |
409 | (setq url (url-recreate-url urlobj) |
410 | str-width (length url))) | |
411 | (if (> modified 1) | |
412 | (setq fname (concat "/.../" fname)) | |
413 | (setq fname (concat "/" fname))) | |
d18ec89f | 414 | (setf (url-filename urlobj) fname) |
8c8b8430 SM |
415 | (setq url (url-recreate-url urlobj))) |
416 | url)) | |
417 | ||
418 | ;;;###autoload | |
419 | (defun url-view-url (&optional no-show) | |
420 | "View the current document's URL. | |
421 | Optional argument NO-SHOW means just return the URL, don't show it in | |
422 | the minibuffer. | |
423 | ||
424 | This uses `url-current-object', set locally to the buffer." | |
425 | (interactive) | |
426 | (if (not url-current-object) | |
427 | nil | |
428 | (if no-show | |
429 | (url-recreate-url url-current-object) | |
430 | (message "%s" (url-recreate-url url-current-object))))) | |
431 | ||
432 | (eval-and-compile | |
433 | (defvar url-get-url-filename-chars "-%.?@a-zA-Z0-9()_/:~=&" | |
434 | "Valid characters in a URL") | |
435 | ) | |
436 | ||
437 | (defun url-get-url-at-point (&optional pt) | |
438 | "Get the URL closest to point, but don't change position. | |
439 | Has a preference for looking backward when not directly on a symbol." | |
440 | ;; Not at all perfect - point must be right in the name. | |
441 | (save-excursion | |
442 | (if pt (goto-char pt)) | |
443 | (let (start url) | |
444 | (save-excursion | |
445 | ;; first see if you're just past a filename | |
446 | (if (not (eobp)) | |
447 | (if (looking-at "[] \t\n[{}()]") ; whitespace or some parens | |
448 | (progn | |
449 | (skip-chars-backward " \n\t\r({[]})") | |
450 | (if (not (bobp)) | |
451 | (backward-char 1))))) | |
452 | (if (and (char-after (point)) | |
453 | (string-match (eval-when-compile | |
454 | (concat "[" url-get-url-filename-chars "]")) | |
455 | (char-to-string (char-after (point))))) | |
456 | (progn | |
457 | (skip-chars-backward url-get-url-filename-chars) | |
458 | (setq start (point)) | |
459 | (skip-chars-forward url-get-url-filename-chars)) | |
460 | (setq start (point))) | |
461 | (setq url (buffer-substring-no-properties start (point)))) | |
462 | (if (and url (string-match "^(.*)\\.?$" url)) | |
463 | (setq url (match-string 1 url))) | |
464 | (if (and url (string-match "^URL:" url)) | |
465 | (setq url (substring url 4 nil))) | |
466 | (if (and url (string-match "\\.$" url)) | |
467 | (setq url (substring url 0 -1))) | |
468 | (if (and url (string-match "^www\\." url)) | |
469 | (setq url (concat "http://" url))) | |
470 | (if (and url (not (string-match url-nonrelative-link url))) | |
471 | (setq url nil)) | |
472 | url))) | |
473 | ||
474 | (defun url-generate-unique-filename (&optional fmt) | |
475 | "Generate a unique filename in `url-temporary-directory'." | |
476 | (if (not fmt) | |
477 | (let ((base (format "url-tmp.%d" (user-real-uid))) | |
478 | (fname "") | |
479 | (x 0)) | |
480 | (setq fname (format "%s%d" base x)) | |
481 | (while (file-exists-p | |
482 | (expand-file-name fname url-temporary-directory)) | |
483 | (setq x (1+ x) | |
484 | fname (concat base (int-to-string x)))) | |
485 | (expand-file-name fname url-temporary-directory)) | |
486 | (let ((base (concat "url" (int-to-string (user-real-uid)))) | |
487 | (fname "") | |
488 | (x 0)) | |
489 | (setq fname (format fmt (concat base (int-to-string x)))) | |
490 | (while (file-exists-p | |
491 | (expand-file-name fname url-temporary-directory)) | |
492 | (setq x (1+ x) | |
493 | fname (format fmt (concat base (int-to-string x))))) | |
494 | (expand-file-name fname url-temporary-directory)))) | |
495 | ||
496 | (defun url-extract-mime-headers () | |
497 | "Set `url-current-mime-headers' in current buffer." | |
498 | (save-excursion | |
499 | (goto-char (point-min)) | |
500 | (unless url-current-mime-headers | |
501 | (set (make-local-variable 'url-current-mime-headers) | |
502 | (mail-header-extract))))) | |
503 | ||
8703ea53 GM |
504 | (defun url-make-private-file (file) |
505 | "Make FILE only readable and writable by the current user. | |
506 | Creates FILE and its parent directories if they do not exist." | |
507 | (let ((dir (file-name-directory file))) | |
508 | (when dir | |
509 | ;; For historical reasons. | |
510 | (make-directory dir t))) | |
511 | ;; Based on doc-view-make-safe-dir. | |
512 | (condition-case nil | |
513 | (let ((umask (default-file-modes))) | |
514 | (unwind-protect | |
515 | (progn | |
516 | (set-default-file-modes #o0600) | |
517 | (with-temp-buffer | |
518 | (write-region (point-min) (point-max) | |
519 | file nil 'silent nil 'excl))) | |
520 | (set-default-file-modes umask))) | |
521 | (file-already-exists | |
522 | (if (file-symlink-p file) | |
523 | (error "Danger: `%s' is a symbolic link" file)) | |
524 | (set-file-modes file #o0600)))) | |
525 | ||
8c8b8430 | 526 | (provide 'url-util) |
e5566bd5 | 527 | |
a2fd1462 SM |
528 | ;; arch-tag: 24352abc-5a5a-412e-90cd-313b26bed5c9 |
529 | ;;; url-util.el ends here |