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eec82323 | 1 | ;;; nnheader.el --- header access macros for Gnus and its backends |
16409b0b | 2 | |
e84b4b86 TTN |
3 | ;; Copyright (C) 1987, 1988, 1989, 1990, 1993, 1994, |
4 | ;; 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, | |
5df4f04c | 5 | ;; 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
eec82323 LMI |
6 | |
7 | ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet> | |
23f87bed | 8 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> |
eec82323 LMI |
9 | ;; Keywords: news |
10 | ||
11 | ;; This file is part of GNU Emacs. | |
12 | ||
5e809f55 | 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 14 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
15 | ;; the Free Software Foundation, either version 3 of the License, or |
16 | ;; (at your option) any later version. | |
eec82323 LMI |
17 | |
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
eec82323 LMI |
25 | |
26 | ;;; Commentary: | |
27 | ||
eec82323 LMI |
28 | ;;; Code: |
29 | ||
7df7482d | 30 | (eval-when-compile (require 'cl)) |
6f3b74c6 | 31 | |
03da5d08 | 32 | (defvar nnmail-extra-headers) |
9efa445f DN |
33 | (defvar gnus-newsgroup-name) |
34 | (defvar nnheader-file-coding-system) | |
35 | (defvar jka-compr-compression-info-list) | |
03da5d08 | 36 | |
6f3b74c6 GM |
37 | ;; Requiring `gnus-util' at compile time creates a circular |
38 | ;; dependency between nnheader.el and gnus-util.el. | |
23f87bed | 39 | ;;(eval-when-compile (require 'gnus-util)) |
7df7482d | 40 | |
eec82323 | 41 | (require 'mail-utils) |
16409b0b | 42 | (require 'mm-util) |
23f87bed | 43 | (require 'gnus-util) |
8abf1b22 GM |
44 | ;; FIXME none of these are used explicitly in this file. |
45 | (autoload 'gnus-sorted-intersection "gnus-range") | |
46 | (autoload 'gnus-intersection "gnus-range") | |
47 | (autoload 'gnus-sorted-complement "gnus-range") | |
48 | (autoload 'gnus-sorted-difference "gnus-range") | |
23f87bed MB |
49 | |
50 | (defcustom gnus-verbose-backends 7 | |
51 | "Integer that says how verbose the Gnus backends should be. | |
52 | The higher the number, the more messages the Gnus backends will flash | |
53 | to say what it's doing. At zero, the Gnus backends will be totally | |
54 | mute; at five, they will display most important messages; and at ten, | |
55 | they will keep on jabbering all the time." | |
56 | :group 'gnus-start | |
57 | :type 'integer) | |
58 | ||
59 | (defcustom gnus-nov-is-evil nil | |
60 | "If non-nil, Gnus backends will never output headers in the NOV format." | |
61 | :group 'gnus-server | |
62 | :type 'boolean) | |
eec82323 | 63 | |
f4dd4ae8 | 64 | (defvar nnheader-max-head-length 8192 |
23f87bed MB |
65 | "*Max length of the head of articles. |
66 | ||
67 | Value is an integer, nil, or t. nil means read in chunks of a file | |
68 | indefinitely until a complete head is found\; t means always read the | |
69 | entire file immediately, disregarding `nnheader-head-chop-length'. | |
70 | ||
71 | Integer values will in effect be rounded up to the nearest multiple of | |
72 | `nnheader-head-chop-length'.") | |
eec82323 LMI |
73 | |
74 | (defvar nnheader-head-chop-length 2048 | |
75 | "*Length of each read operation when trying to fetch HEAD headers.") | |
76 | ||
23f87bed MB |
77 | (defvar nnheader-read-timeout |
78 | (if (string-match "windows-nt\\|os/2\\|emx\\|cygwin" | |
79 | (symbol-name system-type)) | |
e62e7654 MB |
80 | ;; http://thread.gmane.org/v9655t3pjo.fsf@marauder.physik.uni-ulm.de |
81 | ;; | |
82 | ;; IIRC, values lower than 1.0 didn't/don't work on Windows/DOS. | |
83 | ;; | |
84 | ;; There should probably be a runtime test to determine the timing | |
85 | ;; resolution, or a primitive to report it. I don't know off-hand | |
86 | ;; what's possible. Perhaps better, maybe the Windows/DOS primitive | |
87 | ;; could round up non-zero timeouts to a minimum of 1.0? | |
88 | 1.0 | |
e3e955fe MB |
89 | ;; 2008-05-19 change by Larsi: |
90 | ;; Change the default timeout from 0.1 seconds to 0.01 seconds. This will | |
91 | ;; make nntp and pop3 article retrieval faster in some cases, but might | |
92 | ;; make CPU usage larger. If this has any bad side effects, we might | |
93 | ;; revert this change. | |
a368801c | 94 | 0.01) |
e3e955fe MB |
95 | ;; When changing this variable, consider changing `pop3-read-timeout' as |
96 | ;; well. | |
23f87bed MB |
97 | "How long nntp should wait between checking for the end of output. |
98 | Shorter values mean quicker response, but are more CPU intensive.") | |
99 | ||
c60ee5e7 | 100 | (defvar nnheader-file-name-translation-alist |
3e7b2fa7 SZ |
101 | (let ((case-fold-search t)) |
102 | (cond | |
23f87bed | 103 | ((string-match "windows-nt\\|os/2\\|emx\\|cygwin" |
3e7b2fa7 SZ |
104 | (symbol-name system-type)) |
105 | (append (mapcar (lambda (c) (cons c ?_)) | |
106 | '(?: ?* ?\" ?< ?> ??)) | |
23f87bed | 107 | (if (string-match "windows-nt\\|cygwin" |
3e7b2fa7 SZ |
108 | (symbol-name system-type)) |
109 | nil | |
110 | '((?+ . ?-))))) | |
111 | (t nil))) | |
eec82323 | 112 | "*Alist that says how to translate characters in file names. |
16409b0b | 113 | For instance, if \":\" is invalid as a file character in file names |
eec82323 LMI |
114 | on your system, you could say something like: |
115 | ||
116 | \(setq nnheader-file-name-translation-alist '((?: . ?_)))") | |
117 | ||
23f87bed MB |
118 | (defvar nnheader-directory-separator-character |
119 | (string-to-char (substring (file-name-as-directory ".") -1)) | |
120 | "*A character used to a directory separator.") | |
121 | ||
8abf1b22 GM |
122 | (autoload 'nnmail-message-id "nnmail") |
123 | (autoload 'mail-position-on-field "sendmail") | |
124 | (autoload 'message-remove-header "message") | |
125 | (autoload 'gnus-buffer-live-p "gnus-util") | |
eec82323 LMI |
126 | |
127 | ;;; Header access macros. | |
128 | ||
16409b0b GM |
129 | ;; These macros may look very much like the ones in GNUS 4.1. They |
130 | ;; are, in a way, but you should note that the indices they use have | |
131 | ;; been changed from the internal GNUS format to the NOV format. The | |
132 | ;; makes it possible to read headers from XOVER much faster. | |
133 | ;; | |
134 | ;; The format of a header is now: | |
135 | ;; [number subject from date id references chars lines xref extra] | |
136 | ;; | |
137 | ;; (That next-to-last entry is defined as "misc" in the NOV format, | |
138 | ;; but Gnus uses it for xrefs.) | |
139 | ||
eec82323 LMI |
140 | (defmacro mail-header-number (header) |
141 | "Return article number in HEADER." | |
142 | `(aref ,header 0)) | |
143 | ||
144 | (defmacro mail-header-set-number (header number) | |
145 | "Set article number of HEADER to NUMBER." | |
146 | `(aset ,header 0 ,number)) | |
147 | ||
148 | (defmacro mail-header-subject (header) | |
149 | "Return subject string in HEADER." | |
150 | `(aref ,header 1)) | |
151 | ||
152 | (defmacro mail-header-set-subject (header subject) | |
153 | "Set article subject of HEADER to SUBJECT." | |
154 | `(aset ,header 1 ,subject)) | |
155 | ||
156 | (defmacro mail-header-from (header) | |
157 | "Return author string in HEADER." | |
158 | `(aref ,header 2)) | |
159 | ||
160 | (defmacro mail-header-set-from (header from) | |
161 | "Set article author of HEADER to FROM." | |
162 | `(aset ,header 2 ,from)) | |
163 | ||
164 | (defmacro mail-header-date (header) | |
165 | "Return date in HEADER." | |
166 | `(aref ,header 3)) | |
167 | ||
168 | (defmacro mail-header-set-date (header date) | |
169 | "Set article date of HEADER to DATE." | |
170 | `(aset ,header 3 ,date)) | |
171 | ||
172 | (defalias 'mail-header-message-id 'mail-header-id) | |
173 | (defmacro mail-header-id (header) | |
174 | "Return Id in HEADER." | |
175 | `(aref ,header 4)) | |
176 | ||
177 | (defalias 'mail-header-set-message-id 'mail-header-set-id) | |
178 | (defmacro mail-header-set-id (header id) | |
179 | "Set article Id of HEADER to ID." | |
180 | `(aset ,header 4 ,id)) | |
181 | ||
182 | (defmacro mail-header-references (header) | |
183 | "Return references in HEADER." | |
184 | `(aref ,header 5)) | |
185 | ||
186 | (defmacro mail-header-set-references (header ref) | |
187 | "Set article references of HEADER to REF." | |
188 | `(aset ,header 5 ,ref)) | |
189 | ||
190 | (defmacro mail-header-chars (header) | |
191 | "Return number of chars of article in HEADER." | |
192 | `(aref ,header 6)) | |
193 | ||
194 | (defmacro mail-header-set-chars (header chars) | |
195 | "Set number of chars in article of HEADER to CHARS." | |
196 | `(aset ,header 6 ,chars)) | |
197 | ||
198 | (defmacro mail-header-lines (header) | |
199 | "Return lines in HEADER." | |
200 | `(aref ,header 7)) | |
201 | ||
202 | (defmacro mail-header-set-lines (header lines) | |
203 | "Set article lines of HEADER to LINES." | |
204 | `(aset ,header 7 ,lines)) | |
205 | ||
206 | (defmacro mail-header-xref (header) | |
207 | "Return xref string in HEADER." | |
208 | `(aref ,header 8)) | |
209 | ||
210 | (defmacro mail-header-set-xref (header xref) | |
16409b0b | 211 | "Set article XREF of HEADER to xref." |
eec82323 LMI |
212 | `(aset ,header 8 ,xref)) |
213 | ||
16409b0b GM |
214 | (defmacro mail-header-extra (header) |
215 | "Return the extra headers in HEADER." | |
216 | `(aref ,header 9)) | |
217 | ||
01c52d31 | 218 | (defun mail-header-set-extra (header extra) |
16409b0b | 219 | "Set the extra headers in HEADER to EXTRA." |
01c52d31 | 220 | (aset header 9 extra)) |
16409b0b GM |
221 | |
222 | (defsubst make-mail-header (&optional init) | |
eec82323 | 223 | "Create a new mail header structure initialized with INIT." |
16409b0b | 224 | (make-vector 10 init)) |
eec82323 | 225 | |
16409b0b GM |
226 | (defsubst make-full-mail-header (&optional number subject from date id |
227 | references chars lines xref | |
228 | extra) | |
eec82323 | 229 | "Create a new mail header structure initialized with the parameters given." |
16409b0b | 230 | (vector number subject from date id references chars lines xref extra)) |
eec82323 LMI |
231 | |
232 | ;; fake message-ids: generation and detection | |
233 | ||
234 | (defvar nnheader-fake-message-id 1) | |
235 | ||
01c52d31 MB |
236 | (defsubst nnheader-generate-fake-message-id (&optional number) |
237 | (if (numberp number) | |
238 | (format "fake+none+%s+%d" gnus-newsgroup-name number) | |
239 | (format "fake+none+%s+%s" | |
240 | gnus-newsgroup-name | |
241 | (int-to-string (incf nnheader-fake-message-id))))) | |
eec82323 LMI |
242 | |
243 | (defsubst nnheader-fake-message-id-p (id) | |
23f87bed | 244 | (save-match-data ; regular message-id's are <.*> |
01c52d31 | 245 | (string-match "\\`fake\\+none\\+.*\\+[0-9]+\\'" id))) |
eec82323 LMI |
246 | |
247 | ;; Parsing headers and NOV lines. | |
248 | ||
23f87bed MB |
249 | (defsubst nnheader-remove-cr-followed-by-lf () |
250 | (goto-char (point-max)) | |
251 | (while (search-backward "\r\n" nil t) | |
252 | (delete-char 1))) | |
253 | ||
eec82323 | 254 | (defsubst nnheader-header-value () |
23f87bed | 255 | (skip-chars-forward " \t") |
01c52d31 | 256 | (buffer-substring (point) (point-at-eol))) |
eec82323 | 257 | |
8867ac54 GM |
258 | (autoload 'ietf-drums-unfold-fws "ietf-drums") |
259 | ||
23f87bed MB |
260 | (defun nnheader-parse-naked-head (&optional number) |
261 | ;; This function unfolds continuation lines in this buffer | |
262 | ;; destructively. When this side effect is unwanted, use | |
263 | ;; `nnheader-parse-head' instead of this function. | |
eec82323 | 264 | (let ((case-fold-search t) |
eec82323 | 265 | (buffer-read-only nil) |
23f87bed MB |
266 | (cur (current-buffer)) |
267 | (p (point-min)) | |
268 | in-reply-to lines ref) | |
269 | (nnheader-remove-cr-followed-by-lf) | |
270 | (ietf-drums-unfold-fws) | |
271 | (subst-char-in-region (point-min) (point-max) ?\t ? ) | |
272 | (goto-char p) | |
273 | (insert "\n") | |
eec82323 | 274 | (prog1 |
23f87bed MB |
275 | ;; This implementation of this function, with nine |
276 | ;; search-forwards instead of the one re-search-forward and a | |
277 | ;; case (which basically was the old function) is actually | |
278 | ;; about twice as fast, even though it looks messier. You | |
279 | ;; can't have everything, I guess. Speed and elegance don't | |
280 | ;; always go hand in hand. | |
281 | (vector | |
282 | ;; Number. | |
283 | (or number 0) | |
284 | ;; Subject. | |
285 | (progn | |
286 | (goto-char p) | |
287 | (if (search-forward "\nsubject:" nil t) | |
288 | (nnheader-header-value) "(none)")) | |
289 | ;; From. | |
290 | (progn | |
291 | (goto-char p) | |
292 | (if (search-forward "\nfrom:" nil t) | |
293 | (nnheader-header-value) "(nobody)")) | |
294 | ;; Date. | |
295 | (progn | |
296 | (goto-char p) | |
297 | (if (search-forward "\ndate:" nil t) | |
298 | (nnheader-header-value) "")) | |
299 | ;; Message-ID. | |
300 | (progn | |
301 | (goto-char p) | |
302 | (if (search-forward "\nmessage-id:" nil t) | |
303 | (buffer-substring | |
01c52d31 | 304 | (1- (or (search-forward "<" (point-at-eol) t) |
23f87bed | 305 | (point))) |
01c52d31 | 306 | (or (search-forward ">" (point-at-eol) t) (point))) |
23f87bed MB |
307 | ;; If there was no message-id, we just fake one to make |
308 | ;; subsequent routines simpler. | |
01c52d31 | 309 | (nnheader-generate-fake-message-id number))) |
23f87bed MB |
310 | ;; References. |
311 | (progn | |
312 | (goto-char p) | |
313 | (if (search-forward "\nreferences:" nil t) | |
314 | (nnheader-header-value) | |
315 | ;; Get the references from the in-reply-to header if | |
316 | ;; there were no references and the in-reply-to header | |
317 | ;; looks promising. | |
318 | (if (and (search-forward "\nin-reply-to:" nil t) | |
319 | (setq in-reply-to (nnheader-header-value)) | |
320 | (string-match "<[^\n>]+>" in-reply-to)) | |
321 | (let (ref2) | |
322 | (setq ref (substring in-reply-to (match-beginning 0) | |
323 | (match-end 0))) | |
324 | (while (string-match "<[^\n>]+>" | |
325 | in-reply-to (match-end 0)) | |
326 | (setq ref2 (substring in-reply-to (match-beginning 0) | |
327 | (match-end 0))) | |
328 | (when (> (length ref2) (length ref)) | |
329 | (setq ref ref2))) | |
330 | ref) | |
331 | nil))) | |
332 | ;; Chars. | |
333 | 0 | |
334 | ;; Lines. | |
335 | (progn | |
336 | (goto-char p) | |
337 | (if (search-forward "\nlines: " nil t) | |
338 | (if (numberp (setq lines (read cur))) | |
339 | lines 0) | |
340 | 0)) | |
341 | ;; Xref. | |
342 | (progn | |
343 | (goto-char p) | |
344 | (and (search-forward "\nxref:" nil t) | |
345 | (nnheader-header-value))) | |
346 | ;; Extra. | |
347 | (when nnmail-extra-headers | |
348 | (let ((extra nnmail-extra-headers) | |
349 | out) | |
350 | (while extra | |
351 | (goto-char p) | |
352 | (when (search-forward | |
353 | (concat "\n" (symbol-name (car extra)) ":") nil t) | |
354 | (push (cons (car extra) (nnheader-header-value)) | |
355 | out)) | |
356 | (pop extra)) | |
357 | out))) | |
358 | (goto-char p) | |
359 | (delete-char 1)))) | |
360 | ||
361 | (defun nnheader-parse-head (&optional naked) | |
362 | (let ((cur (current-buffer)) num beg end) | |
363 | (when (if naked | |
364 | (setq num 0 | |
365 | beg (point-min) | |
366 | end (point-max)) | |
367 | (goto-char (point-min)) | |
368 | ;; Search to the beginning of the next header. Error | |
369 | ;; messages do not begin with 2 or 3. | |
370 | (when (re-search-forward "^[23][0-9]+ " nil t) | |
371 | (end-of-line) | |
372 | (setq num (read cur) | |
373 | beg (point) | |
374 | end (if (search-forward "\n.\n" nil t) | |
375 | (- (point) 2) | |
376 | (point))))) | |
377 | (with-temp-buffer | |
378 | (insert-buffer-substring cur beg end) | |
379 | (nnheader-parse-naked-head num))))) | |
eec82323 LMI |
380 | |
381 | (defmacro nnheader-nov-skip-field () | |
382 | '(search-forward "\t" eol 'move)) | |
383 | ||
384 | (defmacro nnheader-nov-field () | |
385 | '(buffer-substring (point) (if (nnheader-nov-skip-field) (1- (point)) eol))) | |
386 | ||
387 | (defmacro nnheader-nov-read-integer () | |
388 | '(prog1 | |
16409b0b | 389 | (if (eq (char-after) ?\t) |
eec82323 | 390 | 0 |
16409b0b GM |
391 | (let ((num (condition-case nil |
392 | (read (current-buffer)) | |
393 | (error nil)))) | |
eec82323 LMI |
394 | (if (numberp num) num 0))) |
395 | (or (eobp) (forward-char 1)))) | |
396 | ||
16409b0b GM |
397 | (defmacro nnheader-nov-parse-extra () |
398 | '(let (out string) | |
399 | (while (not (memq (char-after) '(?\n nil))) | |
400 | (setq string (nnheader-nov-field)) | |
401 | (when (string-match "^\\([^ :]+\\): " string) | |
402 | (push (cons (intern (match-string 1 string)) | |
403 | (substring string (match-end 0))) | |
404 | out))) | |
405 | out)) | |
406 | ||
01c52d31 MB |
407 | (eval-and-compile |
408 | (defvar nnheader-uniquify-message-id nil)) | |
409 | ||
410 | (defmacro nnheader-nov-read-message-id (&optional number) | |
411 | `(let ((id (nnheader-nov-field))) | |
16409b0b | 412 | (if (string-match "^<[^>]+>$" id) |
01c52d31 MB |
413 | ,(if nnheader-uniquify-message-id |
414 | `(if (string-match "__[^@]+@" id) | |
415 | (concat (substring id 0 (match-beginning 0)) | |
416 | (substring id (1- (match-end 0)))) | |
417 | id) | |
418 | 'id) | |
419 | (nnheader-generate-fake-message-id ,number)))) | |
eec82323 LMI |
420 | |
421 | (defun nnheader-parse-nov () | |
01c52d31 MB |
422 | (let ((eol (point-at-eol)) |
423 | (number (nnheader-nov-read-integer))) | |
eec82323 | 424 | (vector |
01c52d31 | 425 | number ; number |
eec82323 LMI |
426 | (nnheader-nov-field) ; subject |
427 | (nnheader-nov-field) ; from | |
428 | (nnheader-nov-field) ; date | |
01c52d31 | 429 | (nnheader-nov-read-message-id number) ; id |
eec82323 LMI |
430 | (nnheader-nov-field) ; refs |
431 | (nnheader-nov-read-integer) ; chars | |
432 | (nnheader-nov-read-integer) ; lines | |
16409b0b | 433 | (if (eq (char-after) ?\n) |
eec82323 | 434 | nil |
8b93df01 DL |
435 | (if (looking-at "Xref: ") |
436 | (goto-char (match-end 0))) | |
437 | (nnheader-nov-field)) ; Xref | |
16409b0b | 438 | (nnheader-nov-parse-extra)))) ; extra |
eec82323 LMI |
439 | |
440 | (defun nnheader-insert-nov (header) | |
441 | (princ (mail-header-number header) (current-buffer)) | |
16409b0b GM |
442 | (let ((p (point))) |
443 | (insert | |
444 | "\t" | |
445 | (or (mail-header-subject header) "(none)") "\t" | |
446 | (or (mail-header-from header) "(nobody)") "\t" | |
447 | (or (mail-header-date header) "") "\t" | |
448 | (or (mail-header-id header) | |
449 | (nnmail-message-id)) | |
450 | "\t" | |
451 | (or (mail-header-references header) "") "\t") | |
452 | (princ (or (mail-header-chars header) 0) (current-buffer)) | |
453 | (insert "\t") | |
454 | (princ (or (mail-header-lines header) 0) (current-buffer)) | |
455 | (insert "\t") | |
456 | (when (mail-header-xref header) | |
457 | (insert "Xref: " (mail-header-xref header))) | |
458 | (when (or (mail-header-xref header) | |
459 | (mail-header-extra header)) | |
460 | (insert "\t")) | |
461 | (when (mail-header-extra header) | |
462 | (let ((extra (mail-header-extra header))) | |
463 | (while extra | |
464 | (insert (symbol-name (caar extra)) | |
465 | ": " (cdar extra) "\t") | |
466 | (pop extra)))) | |
467 | (insert "\n") | |
468 | (backward-char 1) | |
469 | (while (search-backward "\n" p t) | |
470 | (delete-char 1)) | |
471 | (forward-line 1))) | |
472 | ||
23f87bed MB |
473 | (defun nnheader-parse-overview-file (file) |
474 | "Parse FILE and return a list of headers." | |
475 | (mm-with-unibyte-buffer | |
476 | (nnheader-insert-file-contents file) | |
477 | (goto-char (point-min)) | |
478 | (let (headers) | |
479 | (while (not (eobp)) | |
480 | (push (nnheader-parse-nov) headers) | |
481 | (forward-line 1)) | |
482 | (nreverse headers)))) | |
483 | ||
484 | (defun nnheader-write-overview-file (file headers) | |
485 | "Write HEADERS to FILE." | |
486 | (with-temp-file file | |
487 | (mapcar 'nnheader-insert-nov headers))) | |
488 | ||
16409b0b | 489 | (defun nnheader-insert-header (header) |
eec82323 | 490 | (insert |
16409b0b GM |
491 | "Subject: " (or (mail-header-subject header) "(none)") "\n" |
492 | "From: " (or (mail-header-from header) "(nobody)") "\n" | |
493 | "Date: " (or (mail-header-date header) "") "\n" | |
494 | "Message-ID: " (or (mail-header-id header) (nnmail-message-id)) "\n" | |
495 | "References: " (or (mail-header-references header) "") "\n" | |
496 | "Lines: ") | |
eec82323 | 497 | (princ (or (mail-header-lines header) 0) (current-buffer)) |
16409b0b | 498 | (insert "\n\n")) |
eec82323 LMI |
499 | |
500 | (defun nnheader-insert-article-line (article) | |
501 | (goto-char (point-min)) | |
502 | (insert "220 ") | |
503 | (princ article (current-buffer)) | |
504 | (insert " Article retrieved.\n") | |
505 | (search-forward "\n\n" nil 'move) | |
506 | (delete-region (point) (point-max)) | |
507 | (forward-char -1) | |
508 | (insert ".")) | |
509 | ||
510 | (defun nnheader-nov-delete-outside-range (beg end) | |
511 | "Delete all NOV lines that lie outside the BEG to END range." | |
512 | ;; First we find the first wanted line. | |
513 | (nnheader-find-nov-line beg) | |
514 | (delete-region (point-min) (point)) | |
515 | ;; Then we find the last wanted line. | |
516 | (when (nnheader-find-nov-line end) | |
517 | (forward-line 1)) | |
518 | (delete-region (point) (point-max))) | |
519 | ||
520 | (defun nnheader-find-nov-line (article) | |
521 | "Put point at the NOV line that start with ARTICLE. | |
522 | If ARTICLE doesn't exist, put point where that line | |
523 | would have been. The function will return non-nil if | |
524 | the line could be found." | |
525 | ;; This function basically does a binary search. | |
526 | (let ((max (point-max)) | |
527 | (min (goto-char (point-min))) | |
528 | (cur (current-buffer)) | |
529 | (prev (point-min)) | |
530 | num found) | |
531 | (while (not found) | |
23f87bed | 532 | (goto-char (+ min (/ (- max min) 2))) |
eec82323 LMI |
533 | (beginning-of-line) |
534 | (if (or (= (point) prev) | |
535 | (eobp)) | |
536 | (setq found t) | |
537 | (setq prev (point)) | |
6748645f LMI |
538 | (while (and (not (numberp (setq num (read cur)))) |
539 | (not (eobp))) | |
540 | (gnus-delete-line)) | |
541 | (cond ((> num article) | |
eec82323 LMI |
542 | (setq max (point))) |
543 | ((< num article) | |
544 | (setq min (point))) | |
545 | (t | |
546 | (setq found 'yes))))) | |
547 | ;; We may be at the first line. | |
548 | (when (and (not num) | |
549 | (not (eobp))) | |
550 | (setq num (read cur))) | |
551 | ;; Now we may have found the article we're looking for, or we | |
552 | ;; may be somewhere near it. | |
553 | (when (and (not (eq found 'yes)) | |
554 | (not (eq num article))) | |
555 | (setq found (point)) | |
556 | (while (and (< (point) max) | |
557 | (or (not (numberp num)) | |
558 | (< num article))) | |
559 | (forward-line 1) | |
560 | (setq found (point)) | |
561 | (or (eobp) | |
562 | (= (setq num (read cur)) article))) | |
563 | (unless (eq num article) | |
564 | (goto-char found))) | |
565 | (beginning-of-line) | |
566 | (eq num article))) | |
567 | ||
568 | ;; Various cruft the backends and Gnus need to communicate. | |
569 | ||
570 | (defvar nntp-server-buffer nil) | |
23f87bed | 571 | (defvar nntp-process-response nil) |
eec82323 LMI |
572 | (defvar news-reply-yank-from nil) |
573 | (defvar news-reply-yank-message-id nil) | |
574 | ||
575 | (defvar nnheader-callback-function nil) | |
576 | ||
577 | (defun nnheader-init-server-buffer () | |
578 | "Initialize the Gnus-backend communication buffer." | |
2ec9cf15 SM |
579 | (unless (gnus-buffer-live-p nntp-server-buffer) |
580 | (setq nntp-server-buffer (get-buffer-create " *nntpd*"))) | |
581 | (with-current-buffer nntp-server-buffer | |
eec82323 | 582 | (erase-buffer) |
33e2f72c | 583 | (mm-enable-multibyte) |
eec82323 LMI |
584 | (kill-all-local-variables) |
585 | (setq case-fold-search t) ;Should ignore case. | |
23f87bed | 586 | (set (make-local-variable 'nntp-process-response) nil) |
eec82323 LMI |
587 | t)) |
588 | ||
589 | ;;; Various functions the backends use. | |
590 | ||
591 | (defun nnheader-file-error (file) | |
592 | "Return a string that says what is wrong with FILE." | |
593 | (format | |
594 | (cond | |
595 | ((not (file-exists-p file)) | |
596 | "%s does not exist") | |
597 | ((file-directory-p file) | |
598 | "%s is a directory") | |
599 | ((not (file-readable-p file)) | |
600 | "%s is not readable")) | |
601 | file)) | |
602 | ||
603 | (defun nnheader-insert-head (file) | |
604 | "Insert the head of the article." | |
605 | (when (file-exists-p file) | |
606 | (if (eq nnheader-max-head-length t) | |
607 | ;; Just read the entire file. | |
608 | (nnheader-insert-file-contents file) | |
ebf693f3 MB |
609 | ;; Read blocks of the size specified by `nnheader-head-chop-length' |
610 | ;; until we find a separator. | |
eec82323 | 611 | (let ((beg 0) |
ebf693f3 MB |
612 | (start (point)) |
613 | ;; Use `binary' to prevent the contents from being decoded, | |
614 | ;; or it will change the number of characters that | |
615 | ;; `insert-file-contents' returns. | |
616 | (coding-system-for-read 'binary)) | |
eec82323 | 617 | (while (and (eq nnheader-head-chop-length |
ebf693f3 | 618 | (nth 1 (mm-insert-file-contents |
eec82323 LMI |
619 | file nil beg |
620 | (incf beg nnheader-head-chop-length)))) | |
5ebdc299 | 621 | ;; CRLF or CR might be used for the line-break code. |
ebf693f3 | 622 | (prog1 (not (re-search-forward "\n\r?\n\\|\r\r" nil t)) |
eec82323 LMI |
623 | (goto-char (point-max))) |
624 | (or (null nnheader-max-head-length) | |
ebf693f3 MB |
625 | (< beg nnheader-max-head-length)))) |
626 | ;; Finally decode the contents. | |
627 | (when (mm-coding-system-p nnheader-file-coding-system) | |
628 | (mm-decode-coding-region start (point-max) | |
629 | nnheader-file-coding-system)))) | |
eec82323 LMI |
630 | t)) |
631 | ||
632 | (defun nnheader-article-p () | |
633 | "Say whether the current buffer looks like an article." | |
634 | (goto-char (point-min)) | |
635 | (if (not (search-forward "\n\n" nil t)) | |
636 | nil | |
637 | (narrow-to-region (point-min) (1- (point))) | |
638 | (goto-char (point-min)) | |
16409b0b | 639 | (while (looking-at "[a-zA-Z][^ \t]+:.*\n\\([ \t].*\n\\)*\\|From .*\n") |
eec82323 LMI |
640 | (goto-char (match-end 0))) |
641 | (prog1 | |
642 | (eobp) | |
643 | (widen)))) | |
644 | ||
645 | (defun nnheader-insert-references (references message-id) | |
646 | "Insert a References header based on REFERENCES and MESSAGE-ID." | |
647 | (if (and (not references) (not message-id)) | |
16409b0b GM |
648 | ;; This is invalid, but not all articles have Message-IDs. |
649 | () | |
eec82323 | 650 | (mail-position-on-field "References") |
01c52d31 | 651 | (let ((begin (point-at-bol)) |
eec82323 LMI |
652 | (fill-column 78) |
653 | (fill-prefix "\t")) | |
654 | (when references | |
655 | (insert references)) | |
656 | (when (and references message-id) | |
657 | (insert " ")) | |
658 | (when message-id | |
659 | (insert message-id)) | |
660 | ;; Fold long References lines to conform to RFC1036 (sort of). | |
661 | ;; The region must end with a newline to fill the region | |
662 | ;; without inserting extra newline. | |
663 | (fill-region-as-paragraph begin (1+ (point)))))) | |
664 | ||
665 | (defun nnheader-replace-header (header new-value) | |
666 | "Remove HEADER and insert the NEW-VALUE." | |
667 | (save-excursion | |
668 | (save-restriction | |
669 | (nnheader-narrow-to-headers) | |
670 | (prog1 | |
671 | (message-remove-header header) | |
672 | (goto-char (point-max)) | |
673 | (insert header ": " new-value "\n"))))) | |
674 | ||
675 | (defun nnheader-narrow-to-headers () | |
676 | "Narrow to the head of an article." | |
677 | (widen) | |
678 | (narrow-to-region | |
679 | (goto-char (point-min)) | |
680 | (if (search-forward "\n\n" nil t) | |
681 | (1- (point)) | |
682 | (point-max))) | |
683 | (goto-char (point-min))) | |
684 | ||
01c52d31 MB |
685 | (defun nnheader-get-lines-and-char () |
686 | "Return the number of lines and chars in the article body." | |
687 | (goto-char (point-min)) | |
688 | (if (not (re-search-forward "\n\r?\n" nil t)) | |
689 | (list 0 0) | |
690 | (list (count-lines (point) (point-max)) | |
691 | (- (point-max) (point))))) | |
692 | ||
23f87bed MB |
693 | (defun nnheader-remove-body () |
694 | "Remove the body from an article in this current buffer." | |
695 | (goto-char (point-min)) | |
696 | (when (re-search-forward "\n\r?\n" nil t) | |
697 | (delete-region (point) (point-max)))) | |
698 | ||
eec82323 LMI |
699 | (defun nnheader-set-temp-buffer (name &optional noerase) |
700 | "Set-buffer to an empty (possibly new) buffer called NAME with undo disabled." | |
701 | (set-buffer (get-buffer-create name)) | |
16409b0b | 702 | (buffer-disable-undo) |
eec82323 LMI |
703 | (unless noerase |
704 | (erase-buffer)) | |
705 | (current-buffer)) | |
706 | ||
eec82323 LMI |
707 | (defvar nnheader-numerical-files |
708 | (if (boundp 'jka-compr-compression-info-list) | |
709 | (concat "\\([0-9]+\\)\\(" | |
710 | (mapconcat (lambda (i) (aref i 0)) | |
711 | jka-compr-compression-info-list "\\|") | |
712 | "\\)?") | |
713 | "[0-9]+$") | |
714 | "Regexp that match numerical files.") | |
715 | ||
716 | (defvar nnheader-numerical-short-files (concat "^" nnheader-numerical-files) | |
717 | "Regexp that matches numerical file names.") | |
718 | ||
719 | (defvar nnheader-numerical-full-files (concat "/" nnheader-numerical-files) | |
35ef97a5 | 720 | "Regexp that matches numerical full file names.") |
eec82323 LMI |
721 | |
722 | (defsubst nnheader-file-to-number (file) | |
16409b0b | 723 | "Take a FILE name and return the article number." |
6748645f | 724 | (if (string= nnheader-numerical-short-files "^[0-9]+$") |
e9bd5782 | 725 | (string-to-number file) |
eec82323 | 726 | (string-match nnheader-numerical-short-files file) |
e9bd5782 | 727 | (string-to-number (match-string 0 file)))) |
eec82323 | 728 | |
23f87bed MB |
729 | (defvar nnheader-directory-files-is-safe |
730 | (or (eq system-type 'windows-nt) | |
01c52d31 | 731 | (not (featurep 'xemacs))) |
23f87bed MB |
732 | "If non-nil, Gnus believes `directory-files' is safe. |
733 | It has been reported numerous times that `directory-files' fails with | |
734 | an alarming frequency on NFS mounted file systems. If it is nil, | |
735 | `nnheader-directory-files-safe' is used.") | |
736 | ||
eec82323 | 737 | (defun nnheader-directory-files-safe (&rest args) |
23f87bed | 738 | "Execute `directory-files' twice and returns the longer result." |
eec82323 LMI |
739 | (let ((first (apply 'directory-files args)) |
740 | (second (apply 'directory-files args))) | |
741 | (if (> (length first) (length second)) | |
742 | first | |
743 | second))) | |
744 | ||
745 | (defun nnheader-directory-articles (dir) | |
16409b0b | 746 | "Return a list of all article files in directory DIR." |
eec82323 | 747 | (mapcar 'nnheader-file-to-number |
23f87bed MB |
748 | (if nnheader-directory-files-is-safe |
749 | (directory-files | |
750 | dir nil nnheader-numerical-short-files t) | |
751 | (nnheader-directory-files-safe | |
752 | dir nil nnheader-numerical-short-files t)))) | |
eec82323 LMI |
753 | |
754 | (defun nnheader-article-to-file-alist (dir) | |
755 | "Return an alist of article/file pairs in DIR." | |
756 | (mapcar (lambda (file) (cons (nnheader-file-to-number file) file)) | |
23f87bed MB |
757 | (if nnheader-directory-files-is-safe |
758 | (directory-files | |
759 | dir nil nnheader-numerical-short-files t) | |
760 | (nnheader-directory-files-safe | |
761 | dir nil nnheader-numerical-short-files t)))) | |
eec82323 LMI |
762 | |
763 | (defun nnheader-fold-continuation-lines () | |
764 | "Fold continuation lines in the current buffer." | |
765 | (nnheader-replace-regexp "\\(\r?\n[ \t]+\\)+" " ")) | |
766 | ||
6748645f LMI |
767 | (defun nnheader-translate-file-chars (file &optional full) |
768 | "Translate FILE into something that can be a file name. | |
769 | If FULL, translate everything." | |
eec82323 LMI |
770 | (if (null nnheader-file-name-translation-alist) |
771 | ;; No translation is necessary. | |
772 | file | |
eec82323 LMI |
773 | (let* ((i 0) |
774 | trans leaf path len) | |
6748645f LMI |
775 | (if full |
776 | ;; Do complete translation. | |
777 | (setq leaf (copy-sequence file) | |
16409b0b GM |
778 | path "" |
779 | i (if (and (< 1 (length leaf)) (eq ?: (aref leaf 1))) | |
780 | 2 0)) | |
6748645f LMI |
781 | ;; We translate -- but only the file name. We leave the directory |
782 | ;; alone. | |
df359f6c | 783 | (if (and (featurep 'xemacs) |
23f87bed MB |
784 | (memq system-type '(cygwin32 win32 w32 mswindows windows-nt |
785 | cygwin))) | |
df359f6c DL |
786 | ;; This is needed on NT and stuff, because |
787 | ;; file-name-nondirectory is not enough to split | |
788 | ;; file names, containing ':', e.g. | |
789 | ;; "d:\\Work\\News\\nntp+news.fido7.ru:fido7.ru.gnu.SCORE" | |
c60ee5e7 | 790 | ;; |
df359f6c DL |
791 | ;; we are trying to correctly split such names: |
792 | ;; "d:file.name" -> "a:" "file.name" | |
793 | ;; "aaa:bbb.ccc" -> "" "aaa:bbb.ccc" | |
794 | ;; "d:aaa\\bbb:ccc" -> "d:aaa\\" "bbb:ccc" | |
795 | ;; etc. | |
796 | ;; to translate then only the file name part. | |
797 | (progn | |
798 | (setq leaf file | |
799 | path "") | |
800 | (if (string-match "\\(^\\w:\\|[/\\]\\)\\([^/\\]+\\)$" file) | |
801 | (setq leaf (substring file (match-beginning 2)) | |
802 | path (substring file 0 (match-beginning 2))))) | |
803 | ;; Emacs DTRT, says andrewi. | |
6748645f LMI |
804 | (setq leaf (file-name-nondirectory file) |
805 | path (file-name-directory file)))) | |
eec82323 LMI |
806 | (setq len (length leaf)) |
807 | (while (< i len) | |
808 | (when (setq trans (cdr (assq (aref leaf i) | |
809 | nnheader-file-name-translation-alist))) | |
810 | (aset leaf i trans)) | |
811 | (incf i)) | |
812 | (concat path leaf)))) | |
813 | ||
814 | (defun nnheader-report (backend &rest args) | |
815 | "Report an error from the BACKEND. | |
816 | The first string in ARGS can be a format string." | |
817 | (set (intern (format "%s-status-string" backend)) | |
818 | (if (< (length args) 2) | |
819 | (car args) | |
820 | (apply 'format args))) | |
821 | nil) | |
822 | ||
823 | (defun nnheader-get-report (backend) | |
824 | "Get the most recent report from BACKEND." | |
825 | (condition-case () | |
6748645f | 826 | (nnheader-message 5 "%s" (symbol-value (intern (format "%s-status-string" |
16409b0b | 827 | backend)))) |
6748645f | 828 | (error (nnheader-message 5 "")))) |
eec82323 LMI |
829 | |
830 | (defun nnheader-insert (format &rest args) | |
831 | "Clear the communication buffer and insert FORMAT and ARGS into the buffer. | |
832 | If FORMAT isn't a format string, it and all ARGS will be inserted | |
833 | without formatting." | |
834 | (save-excursion | |
835 | (set-buffer nntp-server-buffer) | |
836 | (erase-buffer) | |
837 | (if (string-match "%" format) | |
838 | (insert (apply 'format format args)) | |
839 | (apply 'insert format args)) | |
840 | t)) | |
841 | ||
23f87bed MB |
842 | (defsubst nnheader-replace-chars-in-string (string from to) |
843 | (mm-subst-char-in-string from to string)) | |
16409b0b GM |
844 | |
845 | (defun nnheader-replace-duplicate-chars-in-string (string from to) | |
eec82323 LMI |
846 | "Replace characters in STRING from FROM to TO." |
847 | (let ((string (substring string 0)) ;Copy string. | |
848 | (len (length string)) | |
16409b0b | 849 | (idx 0) prev i) |
eec82323 LMI |
850 | ;; Replace all occurrences of FROM with TO. |
851 | (while (< idx len) | |
16409b0b GM |
852 | (setq i (aref string idx)) |
853 | (when (and (eq prev from) (= i from)) | |
854 | (aset string (1- idx) to) | |
eec82323 | 855 | (aset string idx to)) |
16409b0b | 856 | (setq prev i) |
eec82323 LMI |
857 | (setq idx (1+ idx))) |
858 | string)) | |
859 | ||
860 | (defun nnheader-file-to-group (file &optional top) | |
861 | "Return a group name based on FILE and TOP." | |
862 | (nnheader-replace-chars-in-string | |
863 | (if (not top) | |
864 | file | |
865 | (condition-case () | |
866 | (substring (expand-file-name file) | |
867 | (length | |
868 | (expand-file-name | |
869 | (file-name-as-directory top)))) | |
870 | (error ""))) | |
23f87bed | 871 | nnheader-directory-separator-character ?.)) |
eec82323 LMI |
872 | |
873 | (defun nnheader-message (level &rest args) | |
874 | "Message if the Gnus backends are talkative." | |
875 | (if (or (not (numberp gnus-verbose-backends)) | |
876 | (<= level gnus-verbose-backends)) | |
01c52d31 MB |
877 | (if gnus-add-timestamp-to-message |
878 | (apply 'gnus-message-with-timestamp args) | |
879 | (apply 'message args)) | |
eec82323 LMI |
880 | (apply 'format args))) |
881 | ||
882 | (defun nnheader-be-verbose (level) | |
883 | "Return whether the backends should be verbose on LEVEL." | |
884 | (or (not (numberp gnus-verbose-backends)) | |
885 | (<= level gnus-verbose-backends))) | |
886 | ||
23f87bed MB |
887 | (defvar nnheader-pathname-coding-system 'iso-8859-1 |
888 | "*Coding system for file name.") | |
e0b8fdf5 | 889 | |
eec82323 | 890 | (defun nnheader-group-pathname (group dir &optional file) |
35ef97a5 | 891 | "Make file name for GROUP." |
eec82323 LMI |
892 | (concat |
893 | (let ((dir (file-name-as-directory (expand-file-name dir)))) | |
894 | ;; If this directory exists, we use it directly. | |
16409b0b GM |
895 | (file-name-as-directory |
896 | (if (file-directory-p (concat dir group)) | |
897 | (expand-file-name group dir) | |
898 | ;; If not, we translate dots into slashes. | |
899 | (expand-file-name (mm-encode-coding-string | |
900 | (nnheader-replace-chars-in-string group ?. ?/) | |
23f87bed | 901 | nnheader-pathname-coding-system) |
16409b0b | 902 | dir)))) |
eec82323 LMI |
903 | (cond ((null file) "") |
904 | ((numberp file) (int-to-string file)) | |
905 | (t file)))) | |
906 | ||
eec82323 | 907 | (defun nnheader-concat (dir &rest files) |
16409b0b | 908 | "Concat DIR as directory to FILES." |
eec82323 LMI |
909 | (apply 'concat (file-name-as-directory dir) files)) |
910 | ||
911 | (defun nnheader-ms-strip-cr () | |
912 | "Strip ^M from the end of all lines." | |
913 | (save-excursion | |
23f87bed | 914 | (nnheader-remove-cr-followed-by-lf))) |
eec82323 LMI |
915 | |
916 | (defun nnheader-file-size (file) | |
917 | "Return the file size of FILE or 0." | |
918 | (or (nth 7 (file-attributes file)) 0)) | |
919 | ||
23f87bed MB |
920 | (defun nnheader-find-etc-directory (package &optional file first) |
921 | "Go through `load-path' and find the \"../etc/PACKAGE\" directory. | |
922 | This function will look in the parent directory of each `load-path' | |
923 | entry, and look for the \"etc\" directory there. | |
924 | If FILE, find the \".../etc/PACKAGE\" file instead. | |
925 | If FIRST is non-nil, return the directory or the file found at the | |
926 | first. Otherwise, find the newest one, though it may take a time." | |
eec82323 | 927 | (let ((path load-path) |
23f87bed | 928 | dir results) |
eec82323 LMI |
929 | ;; We try to find the dir by looking at the load path, |
930 | ;; stripping away the last component and adding "etc/". | |
931 | (while path | |
932 | (if (and (car path) | |
933 | (file-exists-p | |
934 | (setq dir (concat | |
935 | (file-name-directory | |
936 | (directory-file-name (car path))) | |
937 | "etc/" package | |
938 | (if file "" "/")))) | |
939 | (or file (file-directory-p dir))) | |
23f87bed MB |
940 | (progn |
941 | (or (member dir results) | |
942 | (push dir results)) | |
943 | (setq path (if first nil (cdr path)))) | |
eec82323 | 944 | (setq path (cdr path)))) |
23f87bed MB |
945 | (if (or first (not (cdr results))) |
946 | (car results) | |
947 | (car (sort results 'file-newer-than-file-p))))) | |
eec82323 | 948 | |
9efa445f DN |
949 | (defvar ange-ftp-path-format) |
950 | (defvar efs-path-regexp) | |
eec82323 LMI |
951 | (defun nnheader-re-read-dir (path) |
952 | "Re-read directory PATH if PATH is on a remote system." | |
953 | (if (and (fboundp 'efs-re-read-dir) (boundp 'efs-path-regexp)) | |
954 | (when (string-match efs-path-regexp path) | |
955 | (efs-re-read-dir path)) | |
956 | (when (and (fboundp 'ange-ftp-re-read-dir) (boundp 'ange-ftp-path-format)) | |
957 | (when (string-match (car ange-ftp-path-format) path) | |
958 | (ange-ftp-re-read-dir path))))) | |
959 | ||
6748645f LMI |
960 | (defvar nnheader-file-coding-system 'raw-text |
961 | "Coding system used in file backends of Gnus.") | |
962 | ||
eec82323 LMI |
963 | (defun nnheader-insert-file-contents (filename &optional visit beg end replace) |
964 | "Like `insert-file-contents', q.v., but only reads in the file. | |
965 | A buffer may be modified in several ways after reading into the buffer due | |
966 | to advanced Emacs features, such as file-name-handlers, format decoding, | |
967 | find-file-hooks, etc. | |
968 | This function ensures that none of these modifications will take place." | |
16409b0b GM |
969 | (let ((coding-system-for-read nnheader-file-coding-system)) |
970 | (mm-insert-file-contents filename visit beg end replace))) | |
eec82323 | 971 | |
23f87bed MB |
972 | (defun nnheader-insert-nov-file (file first) |
973 | (let ((size (nth 7 (file-attributes file))) | |
974 | (cutoff (* 32 1024))) | |
975 | (when size | |
976 | (if (< size cutoff) | |
977 | ;; If the file is small, we just load it. | |
978 | (nnheader-insert-file-contents file) | |
979 | ;; We start on the assumption that FIRST is pretty recent. If | |
980 | ;; not, we just insert the rest of the file as well. | |
981 | (let (current) | |
982 | (nnheader-insert-file-contents file nil (- size cutoff) size) | |
983 | (goto-char (point-min)) | |
984 | (delete-region (point) (or (search-forward "\n" nil 'move) (point))) | |
985 | (setq current (ignore-errors (read (current-buffer)))) | |
986 | (if (and (numberp current) | |
987 | (< current first)) | |
988 | t | |
989 | (delete-region (point-min) (point-max)) | |
990 | (nnheader-insert-file-contents file))))))) | |
991 | ||
eec82323 | 992 | (defun nnheader-find-file-noselect (&rest args) |
ff4d3926 MB |
993 | "Open a file with some variables bound. |
994 | See `find-file-noselect' for the arguments." | |
14acf2f5 SM |
995 | (letf* ((format-alist nil) |
996 | (auto-mode-alist (mm-auto-mode-alist)) | |
997 | ((default-value 'major-mode) 'fundamental-mode) | |
998 | (enable-local-variables nil) | |
999 | (after-insert-file-functions nil) | |
1000 | (enable-local-eval nil) | |
1001 | (coding-system-for-read nnheader-file-coding-system) | |
1002 | (version-control 'never) | |
1003 | (ffh (if (boundp 'find-file-hook) | |
1004 | 'find-file-hook | |
1005 | 'find-file-hooks)) | |
1006 | (val (symbol-value ffh))) | |
4a43ee9b MB |
1007 | (set ffh nil) |
1008 | (unwind-protect | |
1009 | (apply 'find-file-noselect args) | |
1010 | (set ffh val)))) | |
eec82323 | 1011 | |
eec82323 LMI |
1012 | (defun nnheader-directory-regular-files (dir) |
1013 | "Return a list of all regular files in DIR." | |
1014 | (let ((files (directory-files dir t)) | |
1015 | out) | |
1016 | (while files | |
1017 | (when (file-regular-p (car files)) | |
1018 | (push (car files) out)) | |
1019 | (pop files)) | |
1020 | (nreverse out))) | |
1021 | ||
6748645f LMI |
1022 | (defun nnheader-directory-files (&rest args) |
1023 | "Same as `directory-files', but prune \".\" and \"..\"." | |
1024 | (let ((files (apply 'directory-files args)) | |
1025 | out) | |
1026 | (while files | |
1027 | (unless (member (file-name-nondirectory (car files)) '("." "..")) | |
1028 | (push (car files) out)) | |
1029 | (pop files)) | |
1030 | (nreverse out))) | |
1031 | ||
eec82323 LMI |
1032 | (defmacro nnheader-skeleton-replace (from &optional to regexp) |
1033 | `(let ((new (generate-new-buffer " *nnheader replace*")) | |
1034 | (cur (current-buffer)) | |
1035 | (start (point-min))) | |
eec82323 LMI |
1036 | (set-buffer cur) |
1037 | (goto-char (point-min)) | |
1038 | (while (,(if regexp 're-search-forward 'search-forward) | |
1039 | ,from nil t) | |
1040 | (insert-buffer-substring | |
1041 | cur start (prog1 (match-beginning 0) (set-buffer new))) | |
1042 | (goto-char (point-max)) | |
1043 | ,(when to `(insert ,to)) | |
1044 | (set-buffer cur) | |
1045 | (setq start (point))) | |
1046 | (insert-buffer-substring | |
1047 | cur start (prog1 (point-max) (set-buffer new))) | |
1048 | (copy-to-buffer cur (point-min) (point-max)) | |
1049 | (kill-buffer (current-buffer)) | |
1050 | (set-buffer cur))) | |
1051 | ||
1052 | (defun nnheader-replace-string (from to) | |
16409b0b | 1053 | "Do a fast replacement of FROM to TO from point to `point-max'." |
eec82323 LMI |
1054 | (nnheader-skeleton-replace from to)) |
1055 | ||
1056 | (defun nnheader-replace-regexp (from to) | |
16409b0b | 1057 | "Do a fast regexp replacement of FROM to TO from point to `point-max'." |
eec82323 LMI |
1058 | (nnheader-skeleton-replace from to t)) |
1059 | ||
1060 | (defun nnheader-strip-cr () | |
1061 | "Strip all \r's from the current buffer." | |
1062 | (nnheader-skeleton-replace "\r")) | |
1063 | ||
16409b0b GM |
1064 | (defalias 'nnheader-cancel-timer 'cancel-timer) |
1065 | (defalias 'nnheader-cancel-function-timers 'cancel-function-timers) | |
23f87bed | 1066 | |
e3e955fe MB |
1067 | ;; When changing this function, consider changing `pop3-accept-process-output' |
1068 | ;; as well. | |
23f87bed MB |
1069 | (defun nnheader-accept-process-output (process) |
1070 | (accept-process-output | |
1071 | process | |
1072 | (truncate nnheader-read-timeout) | |
1073 | (truncate (* (- nnheader-read-timeout | |
1074 | (truncate nnheader-read-timeout)) | |
1075 | 1000)))) | |
eec82323 | 1076 | |
df359f6c | 1077 | (when (featurep 'xemacs) |
eec82323 LMI |
1078 | (require 'nnheaderxm)) |
1079 | ||
1080 | (run-hooks 'nnheader-load-hook) | |
1081 | ||
1082 | (provide 'nnheader) | |
1083 | ||
2ec9cf15 | 1084 | ;; arch-tag: a9c4b7d9-52ae-4ec9-b196-dfd93124d202 |
eec82323 | 1085 | ;;; nnheader.el ends here |