HCoop / bpt / emacs.git / blame
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| 596e5f72 | 1 | ;;; nndiary.el --- A diary back end for Gnus |
| 23f87bed | 2 | |
| 73b0cd50 | 3 | ;; Copyright (C) 1999-2011 Free Software Foundation, Inc. |
| 23f87bed MB |
4 | |
| 5 | ;; Author: Didier Verna <didier@xemacs.org> | |
| 6 | ;; Maintainer: Didier Verna <didier@xemacs.org> | |
| 7 | ;; Created: Fri Jul 16 18:55:42 1999 | |
| 8 | ;; Keywords: calendar mail news | |
| 9 | ||
| 10 | ;; This file is part of GNU Emacs. | |
| 11 | ||
| 5e809f55 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 23f87bed | 13 | ;; it under the terms of the GNU General Public License as published by |
| 5e809f55 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
| 15 | ;; (at your option) any later version. | |
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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 | |
| 5e809f55 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
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24 | |
| 25 | ||
| 26 | ;;; Commentary: | |
| 27 | ||
| 28 | ;; Contents management by FCM version 0.1. | |
| 29 | ||
| 30 | ;; Description: | |
| 31 | ;; =========== | |
| 32 | ||
| 596e5f72 RS |
33 | ;; nndiary is a mail back end designed to handle mails as diary event |
| 34 | ;; reminders. It is now fully documented in the Gnus manual. | |
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35 | |
| 36 | ||
| 37 | ;; Bugs / Todo: | |
| 38 | ;; =========== | |
| 39 | ||
| 40 | ;; * Respooling doesn't work because contrary to the request-scan function, | |
| 41 | ;; Gnus won't allow me to override the split methods when calling the | |
| 596e5f72 | 42 | ;; respooling back end functions. |
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43 | ;; * There's a bug in the time zone mechanism with variable TZ locations. |
| 44 | ;; * We could allow a keyword like `ask' in X-Diary-* headers, that would mean | |
| 45 | ;; "ask for value upon reception of the message". | |
| 46 | ;; * We could add an optional header X-Diary-Reminders to specify a special | |
| 47 | ;; reminders value for this message. Suggested by Jody Klymak. | |
| 48 | ;; * We should check messages validity in other circumstances than just | |
| 596e5f72 RS |
49 | ;; moving an article from somewhere else (request-accept). For instance, |
| 50 | ;; when editing / saving and so on. | |
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51 | |
| 52 | ||
| 53 | ;; Remarks: | |
| 54 | ;; ======= | |
| 55 | ||
| 596e5f72 RS |
56 | ;; * nnoo. NNDiary is very similar to nnml. This makes the idea of using nnoo |
| 57 | ;; (to derive nndiary from nnml) natural. However, my experience with nnoo | |
| e1dbe924 | 58 | ;; is that for reasonably complex back ends like this one, nnoo is a burden |
| 596e5f72 RS |
59 | ;; rather than an help. It's tricky to use, not everything can be inherited, |
| 60 | ;; what can be inherited and when is not very clear, and you've got to be | |
| 61 | ;; very careful because a little mistake can fuck up your other back ends, | |
| 62 | ;; especially because their variables will be use instead of your real ones. | |
| 63 | ;; Finally, I found it easier to just clone the needed parts of nnml, and | |
| 64 | ;; tracking nnml updates is not a big deal. | |
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65 | |
| 66 | ;; IMHO, nnoo is actually badly designed. A much simpler, and yet more | |
| 67 | ;; powerful one would be to make *real* functions and variables for a new | |
| 596e5f72 | 68 | ;; back end based on another. Lisp is a reflexive language so that's a very |
| 5a89f0a7 | 69 | ;; easy thing to do: inspect the function's form, replace occurrences of |
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70 | ;; <nnfrom> (even in strings) with <nnto>, and you're done. |
| 71 | ||
| 72 | ;; * nndiary-get-new-mail, nndiary-mail-source and nndiary-split-methods: | |
| 73 | ;; NNDiary has some experimental parts, in the sense Gnus normally uses only | |
| 9858f6c3 | 74 | ;; one mail back ends for mail retrieval and splitting. This back end is |
| 4c36be58 | 75 | ;; also an attempt to make it behave differently. For Gnus developers: as |
| 596e5f72 RS |
76 | ;; you can see if you snarf into the code, that was not a very difficult |
| 77 | ;; thing to do. Something should be done about the respooling breakage | |
| 78 | ;; though. | |
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79 | |
| 80 | ||
| 81 | ;;; Code: | |
| 82 | ||
| 83 | (require 'nnoo) | |
| 84 | (require 'nnheader) | |
| 85 | (require 'nnmail) | |
| 86 | (eval-when-compile (require 'cl)) | |
| 87 | ||
| 88 | (require 'gnus-start) | |
| 89 | (require 'gnus-sum) | |
| 90 | ||
| 91 | ;; Compatibility Functions ================================================= | |
| 92 | ||
| 93 | (eval-and-compile | |
| 94 | (if (fboundp 'signal-error) | |
| 95 | (defun nndiary-error (&rest args) | |
| 96 | (apply #'signal-error 'nndiary args)) | |
| 97 | (defun nndiary-error (&rest args) | |
| 98 | (apply #'error args)))) | |
| 99 | ||
| 100 | ||
| 596e5f72 | 101 | ;; Back End behavior customization =========================================== |
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102 | |
| 103 | (defgroup nndiary nil | |
| 596e5f72 | 104 | "The Gnus Diary back end." |
| bf247b6e | 105 | :version "22.1" |
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106 | :group 'gnus-diary) |
| 107 | ||
| 108 | (defcustom nndiary-mail-sources | |
| 109 | `((file :path ,(expand-file-name "~/.nndiary"))) | |
| 110 | "*NNDiary specific mail sources. | |
| 111 | This variable is used by nndiary in place of the standard `mail-sources' | |
| 112 | variable when `nndiary-get-new-mail' is set to non-nil. These sources | |
| 113 | must contain diary messages ONLY." | |
| 114 | :group 'nndiary | |
| 115 | :group 'mail-source | |
| 116 | :type 'sexp) | |
| 117 | ||
| 118 | (defcustom nndiary-split-methods '(("diary" "")) | |
| 119 | "*NNDiary specific split methods. | |
| 120 | This variable is used by nndiary in place of the standard | |
| 121 | `nnmail-split-methods' variable when `nndiary-get-new-mail' is set to | |
| 122 | non-nil." | |
| 123 | :group 'nndiary | |
| 124 | :group 'nnmail-split | |
| 125 | :type '(choice (repeat :tag "Alist" (group (string :tag "Name") regexp)) | |
| 126 | (function-item nnmail-split-fancy) | |
| 127 | (function :tag "Other"))) | |
| 128 | ||
| 129 | ||
| 130 | (defcustom nndiary-reminders '((0 . day)) | |
| 3e3dc2c3 | 131 | "*Different times when you want to be reminded of your appointments. |
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132 | Diary articles will appear again, as if they'd been just received. |
| 133 | ||
| 134 | Entries look like (3 . day) which means something like \"Please | |
| 135 | Hortense, would you be so kind as to remind me of my appointments 3 days | |
| 136 | before the date, thank you very much. Anda, hmmm... by the way, are you | |
| 137 | doing anything special tonight ?\". | |
| 138 | ||
| 139 | The units of measure are 'minute 'hour 'day 'week 'month and 'year (no, | |
| 140 | not 'century, sorry). | |
| 141 | ||
| 142 | NOTE: the units of measure actually express dates, not durations: if you | |
| 143 | use 'week, messages will pop up on Sundays at 00:00 (or Mondays if | |
| 67cb63df | 144 | `nndiary-week-starts-on-monday' is non-nil) and *not* 7 days before the |
| 3e3dc2c3 | 145 | appointment, if you use 'month, messages will pop up on the first day of |
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146 | each months, at 00:00 and so on. |
| 147 | ||
| 148 | If you really want to specify a duration (like 24 hours exactly), you can | |
| 149 | use the equivalent in minutes (the smallest unit). A fuzz of 60 seconds | |
| 150 | maximum in the reminder is not that painful, I think. Although this | |
| 151 | scheme might appear somewhat weird at a first glance, it is very powerful. | |
| 152 | In order to make this clear, here are some examples: | |
| 153 | ||
| 154 | - '(0 . day): this is the default value of `nndiary-reminders'. It means | |
| 3e3dc2c3 | 155 | pop up the appointments of the day each morning at 00:00. |
| 23f87bed | 156 | |
| 3e3dc2c3 | 157 | - '(1 . day): this means pop up the appointments the day before, at 00:00. |
| 23f87bed | 158 | |
| 3e3dc2c3 JB |
159 | - '(6 . hour): for an appointment at 18:30, this would pop up the |
| 160 | appointment message at 12:00. | |
| 23f87bed | 161 | |
| 3e3dc2c3 JB |
162 | - '(360 . minute): for an appointment at 18:30 and 15 seconds, this would |
| 163 | pop up the appointment message at 12:30." | |
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164 | :group 'nndiary |
| 165 | :type '(repeat (cons :format "%v\n" | |
| 166 | (integer :format "%v") | |
| 167 | (choice :format "%[%v(s)%] before...\n" | |
| 168 | :value day | |
| 169 | (const :format "%v" minute) | |
| 170 | (const :format "%v" hour) | |
| 171 | (const :format "%v" day) | |
| 172 | (const :format "%v" week) | |
| 173 | (const :format "%v" month) | |
| 174 | (const :format "%v" year))))) | |
| 175 | ||
| 176 | (defcustom nndiary-week-starts-on-monday nil | |
| 177 | "*Whether a week starts on monday (otherwise, sunday)." | |
| 178 | :type 'boolean | |
| 179 | :group 'nndiary) | |
| 180 | ||
| 181 | ||
| 182 | (defcustom nndiary-request-create-group-hooks nil | |
| 183 | "*Hooks to run after `nndiary-request-create-group' is executed. | |
| 184 | The hooks will be called with the full group name as argument." | |
| 185 | :group 'nndiary | |
| 186 | :type 'hook) | |
| 187 | ||
| 188 | (defcustom nndiary-request-update-info-hooks nil | |
| 189 | "*Hooks to run after `nndiary-request-update-info-group' is executed. | |
| 190 | The hooks will be called with the full group name as argument." | |
| 191 | :group 'nndiary | |
| 192 | :type 'hook) | |
| 193 | ||
| 194 | (defcustom nndiary-request-accept-article-hooks nil | |
| 195 | "*Hooks to run before accepting an article. | |
| 196 | Executed near the beginning of `nndiary-request-accept-article'. | |
| 197 | The hooks will be called with the article in the current buffer." | |
| 198 | :group 'nndiary | |
| 199 | :type 'hook) | |
| 200 | ||
| 201 | (defcustom nndiary-check-directory-twice t | |
| 202 | "*If t, check directories twice to avoid NFS failures." | |
| 203 | :group 'nndiary | |
| 204 | :type 'boolean) | |
| 205 | ||
| 206 | ||
| 596e5f72 | 207 | ;; Back End declaration ====================================================== |
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208 | |
| 209 | ;; Well, most of this is nnml clonage. | |
| 210 | ||
| 211 | (nnoo-declare nndiary) | |
| 212 | ||
| 213 | (defvoo nndiary-directory (nnheader-concat gnus-directory "diary/") | |
| 596e5f72 | 214 | "Spool directory for the nndiary back end.") |
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215 | |
| 216 | (defvoo nndiary-active-file | |
| 217 | (expand-file-name "active" nndiary-directory) | |
| 596e5f72 | 218 | "Active file for the nndiary back end.") |
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219 | |
| 220 | (defvoo nndiary-newsgroups-file | |
| 221 | (expand-file-name "newsgroups" nndiary-directory) | |
| 596e5f72 | 222 | "Newsgroups description file for the nndiary back end.") |
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223 | |
| 224 | (defvoo nndiary-get-new-mail nil | |
| 225 | "Whether nndiary gets new mail and split it. | |
| 596e5f72 | 226 | Contrary to traditional mail back ends, this variable can be set to t |
| 9858f6c3 | 227 | even if your primary mail back end also retrieves mail. In such a case, |
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228 | NDiary uses its own mail-sources and split-methods.") |
| 229 | ||
| 230 | (defvoo nndiary-nov-is-evil nil | |
| 231 | "If non-nil, Gnus will never use nov databases for nndiary groups. | |
| 232 | Using nov databases will speed up header fetching considerably. | |
| 233 | This variable shouldn't be flipped much. If you have, for some reason, | |
| 234 | set this to t, and want to set it to nil again, you should always run | |
| 235 | the `nndiary-generate-nov-databases' command. The function will go | |
| 236 | through all nnml directories and generate nov databases for them | |
| 237 | all. This may very well take some time.") | |
| 238 | ||
| 239 | (defvoo nndiary-prepare-save-mail-hook nil | |
| 240 | "*Hook run narrowed to an article before saving.") | |
| 241 | ||
| 242 | (defvoo nndiary-inhibit-expiry nil | |
| 243 | "If non-nil, inhibit expiry.") | |
| 244 | ||
| 245 | \f | |
| 246 | ||
| 247 | (defconst nndiary-version "0.2-b14" | |
| 596e5f72 | 248 | "Current Diary back end version.") |
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249 | |
| 250 | (defun nndiary-version () | |
| 596e5f72 | 251 | "Current Diary back end version." |
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252 | (interactive) |
| 253 | (message "NNDiary version %s" nndiary-version)) | |
| 254 | ||
| 255 | (defvoo nndiary-nov-file-name ".overview") | |
| 256 | ||
| 257 | (defvoo nndiary-current-directory nil) | |
| 258 | (defvoo nndiary-current-group nil) | |
| 259 | (defvoo nndiary-status-string "" ) | |
| 260 | (defvoo nndiary-nov-buffer-alist nil) | |
| 261 | (defvoo nndiary-group-alist nil) | |
| 262 | (defvoo nndiary-active-timestamp nil) | |
| 263 | (defvoo nndiary-article-file-alist nil) | |
| 264 | ||
| 265 | (defvoo nndiary-generate-active-function 'nndiary-generate-active-info) | |
| 266 | (defvoo nndiary-nov-buffer-file-name nil) | |
| 267 | (defvoo nndiary-file-coding-system nnmail-file-coding-system) | |
| 268 | ||
| 269 | (defconst nndiary-headers | |
| 270 | '(("Minute" 0 59) | |
| 271 | ("Hour" 0 23) | |
| 272 | ("Dom" 1 31) | |
| 273 | ("Month" 1 12) | |
| 274 | ("Year" 1971) | |
| 275 | ("Dow" 0 6) | |
| 276 | ("Time-Zone" (("Y" -43200) | |
| 277 | ||
| 278 | ("X" -39600) | |
| 279 | ||
| 280 | ("W" -36000) | |
| 281 | ||
| 282 | ("V" -32400) | |
| 283 | ||
| 284 | ("U" -28800) | |
| 285 | ("PST" -28800) | |
| 286 | ||
| 287 | ("T" -25200) | |
| 288 | ("MST" -25200) | |
| 289 | ("PDT" -25200) | |
| 290 | ||
| 291 | ("S" -21600) | |
| 292 | ("CST" -21600) | |
| 293 | ("MDT" -21600) | |
| 294 | ||
| 295 | ("R" -18000) | |
| 296 | ("EST" -18000) | |
| 297 | ("CDT" -18000) | |
| 298 | ||
| 299 | ("Q" -14400) | |
| 300 | ("AST" -14400) | |
| 301 | ("EDT" -14400) | |
| 302 | ||
| 303 | ("P" -10800) | |
| 304 | ("ADT" -10800) | |
| 305 | ||
| 306 | ("O" -7200) | |
| 307 | ||
| 308 | ("N" -3600) | |
| 309 | ||
| 310 | ("Z" 0) | |
| 311 | ("GMT" 0) | |
| 312 | ("UT" 0) | |
| 313 | ("UTC" 0) | |
| 314 | ("WET" 0) | |
| 315 | ||
| 316 | ("A" 3600) | |
| 317 | ("CET" 3600) | |
| 318 | ("MET" 3600) | |
| 319 | ("MEZ" 3600) | |
| 320 | ("BST" 3600) | |
| 321 | ("WEST" 3600) | |
| 322 | ||
| 323 | ("B" 7200) | |
| 324 | ("EET" 7200) | |
| 325 | ("CEST" 7200) | |
| 326 | ("MEST" 7200) | |
| 327 | ("MESZ" 7200) | |
| 328 | ||
| 329 | ("C" 10800) | |
| 330 | ||
| 331 | ("D" 14400) | |
| 332 | ||
| 333 | ("E" 18000) | |
| 334 | ||
| 335 | ("F" 21600) | |
| 336 | ||
| 337 | ("G" 25200) | |
| 338 | ||
| 339 | ("H" 28800) | |
| 340 | ||
| 341 | ("I" 32400) | |
| 342 | ("JST" 32400) | |
| 343 | ||
| 344 | ("K" 36000) | |
| 345 | ("GST" 36000) | |
| 346 | ||
| 347 | ("L" 39600) | |
| 348 | ||
| 349 | ("M" 43200) | |
| 350 | ("NZST" 43200) | |
| 351 | ||
| 352 | ("NZDT" 46800)))) | |
| 353 | ;; List of NNDiary headers that specify the time spec. Each header name is | |
| 354 | ;; followed by either two integers (specifying a range of possible values | |
| 355 | ;; for this header) or one list (specifying all the possible values for this | |
| c80e3b4a | 356 | ;; header). In the latter case, the list does NOT include the unspecified |
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357 | ;; spec (*). |
| 358 | ;; For time zone values, we have symbolic time zone names associated with | |
| 359 | ;; the (relative) number of seconds ahead GMT. | |
| 360 | ) | |
| 361 | ||
| 362 | (defsubst nndiary-schedule () | |
| 363 | (let (head) | |
| 364 | (condition-case arg | |
| 365 | (mapcar | |
| 366 | (lambda (elt) | |
| 367 | (setq head (nth 0 elt)) | |
| 368 | (nndiary-parse-schedule (nth 0 elt) (nth 1 elt) (nth 2 elt))) | |
| 369 | nndiary-headers) | |
| 63348d24 | 370 | (error |
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371 | (nnheader-report 'nndiary "X-Diary-%s header parse error: %s." |
| 372 | head (cdr arg)) | |
| 373 | nil)) | |
| 374 | )) | |
| 375 | ||
| 376 | ;;; Interface functions ===================================================== | |
| 377 | ||
| 378 | (nnoo-define-basics nndiary) | |
| 379 | ||
| 380 | (deffoo nndiary-retrieve-headers (sequence &optional group server fetch-old) | |
| 381 | (when (nndiary-possibly-change-directory group server) | |
| 20a673b2 | 382 | (with-current-buffer nntp-server-buffer |
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383 | (erase-buffer) |
| 384 | (let* ((file nil) | |
| 385 | (number (length sequence)) | |
| 386 | (count 0) | |
| 387 | (file-name-coding-system nnmail-pathname-coding-system) | |
| 388 | beg article | |
| 389 | (nndiary-check-directory-twice | |
| 390 | (and nndiary-check-directory-twice | |
| 391 | ;; To speed up, disable it in some case. | |
| 392 | (or (not (numberp nnmail-large-newsgroup)) | |
| 393 | (<= number nnmail-large-newsgroup))))) | |
| 394 | (if (stringp (car sequence)) | |
| 395 | 'headers | |
| 396 | (if (nndiary-retrieve-headers-with-nov sequence fetch-old) | |
| 397 | 'nov | |
| 398 | (while sequence | |
| 399 | (setq article (car sequence)) | |
| 400 | (setq file (nndiary-article-to-file article)) | |
| 401 | (when (and file | |
| 402 | (file-exists-p file) | |
| 403 | (not (file-directory-p file))) | |
| 404 | (insert (format "221 %d Article retrieved.\n" article)) | |
| 405 | (setq beg (point)) | |
| 406 | (nnheader-insert-head file) | |
| 407 | (goto-char beg) | |
| 408 | (if (search-forward "\n\n" nil t) | |
| 409 | (forward-char -1) | |
| 410 | (goto-char (point-max)) | |
| 411 | (insert "\n\n")) | |
| 412 | (insert ".\n") | |
| 413 | (delete-region (point) (point-max))) | |
| 414 | (setq sequence (cdr sequence)) | |
| 415 | (setq count (1+ count)) | |
| 416 | (and (numberp nnmail-large-newsgroup) | |
| 417 | (> number nnmail-large-newsgroup) | |
| 418 | (zerop (% count 20)) | |
| 419 | (nnheader-message 6 "nndiary: Receiving headers... %d%%" | |
| 420 | (/ (* count 100) number)))) | |
| 421 | ||
| 422 | (and (numberp nnmail-large-newsgroup) | |
| 423 | (> number nnmail-large-newsgroup) | |
| 424 | (nnheader-message 6 "nndiary: Receiving headers...done")) | |
| 425 | ||
| 426 | (nnheader-fold-continuation-lines) | |
| 427 | 'headers)))))) | |
| 428 | ||
| 429 | (deffoo nndiary-open-server (server &optional defs) | |
| 430 | (nnoo-change-server 'nndiary server defs) | |
| 431 | (when (not (file-exists-p nndiary-directory)) | |
| 432 | (ignore-errors (make-directory nndiary-directory t))) | |
| 433 | (cond | |
| 434 | ((not (file-exists-p nndiary-directory)) | |
| 435 | (nndiary-close-server) | |
| 436 | (nnheader-report 'nndiary "Couldn't create directory: %s" | |
| 437 | nndiary-directory)) | |
| 438 | ((not (file-directory-p (file-truename nndiary-directory))) | |
| 439 | (nndiary-close-server) | |
| 440 | (nnheader-report 'nndiary "Not a directory: %s" nndiary-directory)) | |
| 441 | (t | |
| 442 | (nnheader-report 'nndiary "Opened server %s using directory %s" | |
| 443 | server nndiary-directory) | |
| 444 | t))) | |
| 445 | ||
| 446 | (deffoo nndiary-request-regenerate (server) | |
| 447 | (nndiary-possibly-change-directory nil server) | |
| 448 | (nndiary-generate-nov-databases server) | |
| 449 | t) | |
| 450 | ||
| 451 | (deffoo nndiary-request-article (id &optional group server buffer) | |
| 452 | (nndiary-possibly-change-directory group server) | |
| 453 | (let* ((nntp-server-buffer (or buffer nntp-server-buffer)) | |
| 454 | (file-name-coding-system nnmail-pathname-coding-system) | |
| 455 | path gpath group-num) | |
| 456 | (if (stringp id) | |
| 457 | (when (and (setq group-num (nndiary-find-group-number id)) | |
| 458 | (cdr | |
| 459 | (assq (cdr group-num) | |
| 460 | (nnheader-article-to-file-alist | |
| 461 | (setq gpath | |
| 462 | (nnmail-group-pathname | |
| 463 | (car group-num) | |
| 464 | nndiary-directory)))))) | |
| 465 | (setq path (concat gpath (int-to-string (cdr group-num))))) | |
| 466 | (setq path (nndiary-article-to-file id))) | |
| 467 | (cond | |
| 468 | ((not path) | |
| 469 | (nnheader-report 'nndiary "No such article: %s" id)) | |
| 470 | ((not (file-exists-p path)) | |
| 471 | (nnheader-report 'nndiary "No such file: %s" path)) | |
| 472 | ((file-directory-p path) | |
| 473 | (nnheader-report 'nndiary "File is a directory: %s" path)) | |
| 474 | ((not (save-excursion (let ((nnmail-file-coding-system | |
| 475 | nndiary-file-coding-system)) | |
| 476 | (nnmail-find-file path)))) | |
| 477 | (nnheader-report 'nndiary "Couldn't read file: %s" path)) | |
| 478 | (t | |
| 479 | (nnheader-report 'nndiary "Article %s retrieved" id) | |
| 480 | ;; We return the article number. | |
| 481 | (cons (if group-num (car group-num) group) | |
| e9bd5782 | 482 | (string-to-number (file-name-nondirectory path))))))) |
| 23f87bed | 483 | |
| 286c4fc2 | 484 | (deffoo nndiary-request-group (group &optional server dont-check info) |
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485 | (let ((file-name-coding-system nnmail-pathname-coding-system)) |
| 486 | (cond | |
| 487 | ((not (nndiary-possibly-change-directory group server)) | |
| 488 | (nnheader-report 'nndiary "Invalid group (no such directory)")) | |
| 489 | ((not (file-exists-p nndiary-current-directory)) | |
| 490 | (nnheader-report 'nndiary "Directory %s does not exist" | |
| 491 | nndiary-current-directory)) | |
| 492 | ((not (file-directory-p nndiary-current-directory)) | |
| 493 | (nnheader-report 'nndiary "%s is not a directory" | |
| 494 | nndiary-current-directory)) | |
| 495 | (dont-check | |
| 496 | (nnheader-report 'nndiary "Group %s selected" group) | |
| 497 | t) | |
| 498 | (t | |
| 499 | (nnheader-re-read-dir nndiary-current-directory) | |
| 500 | (nnmail-activate 'nndiary) | |
| 501 | (let ((active (nth 1 (assoc group nndiary-group-alist)))) | |
| 502 | (if (not active) | |
| 503 | (nnheader-report 'nndiary "No such group: %s" group) | |
| 504 | (nnheader-report 'nndiary "Selected group %s" group) | |
| 505 | (nnheader-insert "211 %d %d %d %s\n" | |
| 506 | (max (1+ (- (cdr active) (car active))) 0) | |
| 507 | (car active) (cdr active) group))))))) | |
| 508 | ||
| 509 | (deffoo nndiary-request-scan (&optional group server) | |
| 510 | ;; Use our own mail sources and split methods while Gnus doesn't let us have | |
| 596e5f72 | 511 | ;; multiple back ends for retrieving mail. |
| 23f87bed MB |
512 | (let ((mail-sources nndiary-mail-sources) |
| 513 | (nnmail-split-methods nndiary-split-methods)) | |
| 514 | (setq nndiary-article-file-alist nil) | |
| 515 | (nndiary-possibly-change-directory group server) | |
| 516 | (nnmail-get-new-mail 'nndiary 'nndiary-save-nov nndiary-directory group))) | |
| 517 | ||
| 518 | (deffoo nndiary-close-group (group &optional server) | |
| 519 | (setq nndiary-article-file-alist nil) | |
| 520 | t) | |
| 521 | ||
| 522 | (deffoo nndiary-request-create-group (group &optional server args) | |
| 523 | (nndiary-possibly-change-directory nil server) | |
| 524 | (nnmail-activate 'nndiary) | |
| 525 | (cond | |
| 526 | ((assoc group nndiary-group-alist) | |
| 527 | t) | |
| 528 | ((and (file-exists-p (nnmail-group-pathname group nndiary-directory)) | |
| 529 | (not (file-directory-p (nnmail-group-pathname | |
| 530 | group nndiary-directory)))) | |
| 531 | (nnheader-report 'nndiary "%s is a file" | |
| 532 | (nnmail-group-pathname group nndiary-directory))) | |
| 533 | (t | |
| 534 | (let (active) | |
| 535 | (push (list group (setq active (cons 1 0))) | |
| 536 | nndiary-group-alist) | |
| 537 | (nndiary-possibly-create-directory group) | |
| 538 | (nndiary-possibly-change-directory group server) | |
| 539 | (let ((articles (nnheader-directory-articles nndiary-current-directory))) | |
| 540 | (when articles | |
| 541 | (setcar active (apply 'min articles)) | |
| 542 | (setcdr active (apply 'max articles)))) | |
| 543 | (nnmail-save-active nndiary-group-alist nndiary-active-file) | |
| 544 | (run-hook-with-args 'nndiary-request-create-group-hooks | |
| 545 | (gnus-group-prefixed-name group | |
| 546 | (list "nndiary" server))) | |
| 547 | t)) | |
| 548 | )) | |
| 549 | ||
| 550 | (deffoo nndiary-request-list (&optional server) | |
| 551 | (save-excursion | |
| 552 | (let ((nnmail-file-coding-system nnmail-active-file-coding-system) | |
| 553 | (file-name-coding-system nnmail-pathname-coding-system)) | |
| 554 | (nnmail-find-file nndiary-active-file)) | |
| 555 | (setq nndiary-group-alist (nnmail-get-active)) | |
| 556 | t)) | |
| 557 | ||
| 558 | (deffoo nndiary-request-newgroups (date &optional server) | |
| 559 | (nndiary-request-list server)) | |
| 560 | ||
| 561 | (deffoo nndiary-request-list-newsgroups (&optional server) | |
| 562 | (save-excursion | |
| 563 | (nnmail-find-file nndiary-newsgroups-file))) | |
| 564 | ||
| 565 | (deffoo nndiary-request-expire-articles (articles group &optional server force) | |
| 566 | (nndiary-possibly-change-directory group server) | |
| 567 | (let ((active-articles | |
| 568 | (nnheader-directory-articles nndiary-current-directory)) | |
| 569 | article rest number) | |
| 570 | (nnmail-activate 'nndiary) | |
| 571 | ;; Articles not listed in active-articles are already gone, | |
| 572 | ;; so don't try to expire them. | |
| 573 | (setq articles (gnus-intersection articles active-articles)) | |
| 574 | (while articles | |
| 575 | (setq article (nndiary-article-to-file (setq number (pop articles)))) | |
| 576 | (if (and (nndiary-deletable-article-p group number) | |
| 577 | ;; Don't use nnmail-expired-article-p. Our notion of expiration | |
| 578 | ;; is a bit peculiar ... | |
| 579 | (or force (nndiary-expired-article-p article))) | |
| 580 | (progn | |
| 581 | ;; Allow a special target group. | |
| 582 | (unless (eq nnmail-expiry-target 'delete) | |
| 583 | (with-temp-buffer | |
| 584 | (nndiary-request-article number group server (current-buffer)) | |
| 585 | (let ((nndiary-current-directory nil)) | |
| 586 | (nnmail-expiry-target-group nnmail-expiry-target group))) | |
| 587 | (nndiary-possibly-change-directory group server)) | |
| 588 | (nnheader-message 5 "Deleting article %s in %s" number group) | |
| 589 | (condition-case () | |
| 590 | (funcall nnmail-delete-file-function article) | |
| 591 | (file-error (push number rest))) | |
| 592 | (setq active-articles (delq number active-articles)) | |
| 593 | (nndiary-nov-delete-article group number)) | |
| 594 | (push number rest))) | |
| 595 | (let ((active (nth 1 (assoc group nndiary-group-alist)))) | |
| 596 | (when active | |
| 597 | (setcar active (or (and active-articles | |
| 598 | (apply 'min active-articles)) | |
| 599 | (1+ (cdr active))))) | |
| 600 | (nnmail-save-active nndiary-group-alist nndiary-active-file)) | |
| 601 | (nndiary-save-nov) | |
| 602 | (nconc rest articles))) | |
| 603 | ||
| 604 | (deffoo nndiary-request-move-article | |
| 01c52d31 | 605 | (article group server accept-form &optional last move-is-internal) |
| 23f87bed MB |
606 | (let ((buf (get-buffer-create " *nndiary move*")) |
| 607 | result) | |
| 608 | (nndiary-possibly-change-directory group server) | |
| 609 | (nndiary-update-file-alist) | |
| 610 | (and | |
| 611 | (nndiary-deletable-article-p group article) | |
| 612 | (nndiary-request-article article group server) | |
| 613 | (let (nndiary-current-directory | |
| 614 | nndiary-current-group | |
| 615 | nndiary-article-file-alist) | |
| 20a673b2 | 616 | (with-current-buffer buf |
| 23f87bed MB |
617 | (insert-buffer-substring nntp-server-buffer) |
| 618 | (setq result (eval accept-form)) | |
| 619 | (kill-buffer (current-buffer)) | |
| 620 | result)) | |
| 621 | (progn | |
| 622 | (nndiary-possibly-change-directory group server) | |
| 623 | (condition-case () | |
| 624 | (funcall nnmail-delete-file-function | |
| 625 | (nndiary-article-to-file article)) | |
| 626 | (file-error nil)) | |
| 627 | (nndiary-nov-delete-article group article) | |
| 628 | (when last | |
| 629 | (nndiary-save-nov) | |
| 630 | (nnmail-save-active nndiary-group-alist nndiary-active-file)))) | |
| 631 | result)) | |
| 632 | ||
| 633 | (deffoo nndiary-request-accept-article (group &optional server last) | |
| 634 | (nndiary-possibly-change-directory group server) | |
| 635 | (nnmail-check-syntax) | |
| 636 | (run-hooks 'nndiary-request-accept-article-hooks) | |
| 637 | (when (nndiary-schedule) | |
| 638 | (let (result) | |
| 639 | (when nnmail-cache-accepted-message-ids | |
| bf247b6e | 640 | (nnmail-cache-insert (nnmail-fetch-field "message-id") |
| 23f87bed MB |
641 | group |
| 642 | (nnmail-fetch-field "subject"))) | |
| 643 | (if (stringp group) | |
| 644 | (and | |
| 645 | (nnmail-activate 'nndiary) | |
| 646 | (setq result | |
| 647 | (car (nndiary-save-mail | |
| 648 | (list (cons group (nndiary-active-number group)))))) | |
| 649 | (progn | |
| 650 | (nnmail-save-active nndiary-group-alist nndiary-active-file) | |
| 651 | (and last (nndiary-save-nov)))) | |
| 652 | (and | |
| 653 | (nnmail-activate 'nndiary) | |
| 654 | (if (and (not (setq result | |
| 655 | (nnmail-article-group 'nndiary-active-number))) | |
| 656 | (yes-or-no-p "Moved to `junk' group; delete article? ")) | |
| 657 | (setq result 'junk) | |
| 658 | (setq result (car (nndiary-save-mail result)))) | |
| 659 | (when last | |
| 660 | (nnmail-save-active nndiary-group-alist nndiary-active-file) | |
| 661 | (when nnmail-cache-accepted-message-ids | |
| 662 | (nnmail-cache-close)) | |
| 663 | (nndiary-save-nov)))) | |
| 664 | result)) | |
| 665 | ) | |
| 666 | ||
| 667 | (deffoo nndiary-request-post (&optional server) | |
| 668 | (nnmail-do-request-post 'nndiary-request-accept-article server)) | |
| 669 | ||
| 670 | (deffoo nndiary-request-replace-article (article group buffer) | |
| 671 | (nndiary-possibly-change-directory group) | |
| 20a673b2 | 672 | (with-current-buffer buffer |
| 23f87bed MB |
673 | (nndiary-possibly-create-directory group) |
| 674 | (let ((chars (nnmail-insert-lines)) | |
| 675 | (art (concat (int-to-string article) "\t")) | |
| 676 | headers) | |
| 677 | (when (ignore-errors | |
| 678 | (nnmail-write-region | |
| 679 | (point-min) (point-max) | |
| 680 | (or (nndiary-article-to-file article) | |
| 681 | (expand-file-name (int-to-string article) | |
| 682 | nndiary-current-directory)) | |
| 683 | nil (if (nnheader-be-verbose 5) nil 'nomesg)) | |
| 684 | t) | |
| 685 | (setq headers (nndiary-parse-head chars article)) | |
| 686 | ;; Replace the NOV line in the NOV file. | |
| 20a673b2 | 687 | (with-current-buffer (nndiary-open-nov group) |
| 23f87bed MB |
688 | (goto-char (point-min)) |
| 689 | (if (or (looking-at art) | |
| 690 | (search-forward (concat "\n" art) nil t)) | |
| 691 | ;; Delete the old NOV line. | |
| 692 | (delete-region (progn (beginning-of-line) (point)) | |
| 693 | (progn (forward-line 1) (point))) | |
| 694 | ;; The line isn't here, so we have to find out where | |
| 695 | ;; we should insert it. (This situation should never | |
| 696 | ;; occur, but one likes to make sure...) | |
| 697 | (while (and (looking-at "[0-9]+\t") | |
| e9bd5782 | 698 | (< (string-to-number |
| 23f87bed MB |
699 | (buffer-substring |
| 700 | (match-beginning 0) (match-end 0))) | |
| 701 | article) | |
| 702 | (zerop (forward-line 1))))) | |
| 703 | (beginning-of-line) | |
| 704 | (nnheader-insert-nov headers) | |
| 705 | (nndiary-save-nov) | |
| 706 | t))))) | |
| 707 | ||
| 708 | (deffoo nndiary-request-delete-group (group &optional force server) | |
| 709 | (nndiary-possibly-change-directory group server) | |
| 710 | (when force | |
| 711 | ;; Delete all articles in GROUP. | |
| 712 | (let ((articles | |
| 713 | (directory-files | |
| 714 | nndiary-current-directory t | |
| 715 | (concat nnheader-numerical-short-files | |
| 716 | "\\|" (regexp-quote nndiary-nov-file-name) "$"))) | |
| 717 | article) | |
| 718 | (while articles | |
| 719 | (setq article (pop articles)) | |
| 720 | (when (file-writable-p article) | |
| 721 | (nnheader-message 5 "Deleting article %s in %s..." article group) | |
| 722 | (funcall nnmail-delete-file-function article)))) | |
| 723 | ;; Try to delete the directory itself. | |
| 724 | (ignore-errors (delete-directory nndiary-current-directory))) | |
| 725 | ;; Remove the group from all structures. | |
| 726 | (setq nndiary-group-alist | |
| 727 | (delq (assoc group nndiary-group-alist) nndiary-group-alist) | |
| 728 | nndiary-current-group nil | |
| 729 | nndiary-current-directory nil) | |
| 730 | ;; Save the active file. | |
| 731 | (nnmail-save-active nndiary-group-alist nndiary-active-file) | |
| 732 | t) | |
| 733 | ||
| 734 | (deffoo nndiary-request-rename-group (group new-name &optional server) | |
| 735 | (nndiary-possibly-change-directory group server) | |
| 736 | (let ((new-dir (nnmail-group-pathname new-name nndiary-directory)) | |
| 737 | (old-dir (nnmail-group-pathname group nndiary-directory))) | |
| 738 | (when (ignore-errors | |
| 739 | (make-directory new-dir t) | |
| 740 | t) | |
| 741 | ;; We move the articles file by file instead of renaming | |
| 742 | ;; the directory -- there may be subgroups in this group. | |
| 743 | ;; One might be more clever, I guess. | |
| 744 | (let ((files (nnheader-article-to-file-alist old-dir))) | |
| 745 | (while files | |
| 746 | (rename-file | |
| 747 | (concat old-dir (cdar files)) | |
| 748 | (concat new-dir (cdar files))) | |
| 749 | (pop files))) | |
| 750 | ;; Move .overview file. | |
| 751 | (let ((overview (concat old-dir nndiary-nov-file-name))) | |
| 752 | (when (file-exists-p overview) | |
| 753 | (rename-file overview (concat new-dir nndiary-nov-file-name)))) | |
| 754 | (when (<= (length (directory-files old-dir)) 2) | |
| 755 | (ignore-errors (delete-directory old-dir))) | |
| 756 | ;; That went ok, so we change the internal structures. | |
| 757 | (let ((entry (assoc group nndiary-group-alist))) | |
| 758 | (when entry | |
| 759 | (setcar entry new-name)) | |
| 760 | (setq nndiary-current-directory nil | |
| 761 | nndiary-current-group nil) | |
| 762 | ;; Save the new group alist. | |
| 763 | (nnmail-save-active nndiary-group-alist nndiary-active-file) | |
| 764 | t)))) | |
| 765 | ||
| 766 | (deffoo nndiary-set-status (article name value &optional group server) | |
| 767 | (nndiary-possibly-change-directory group server) | |
| 768 | (let ((file (nndiary-article-to-file article))) | |
| 769 | (cond | |
| 770 | ((not (file-exists-p file)) | |
| 771 | (nnheader-report 'nndiary "File %s does not exist" file)) | |
| 772 | (t | |
| 773 | (with-temp-file file | |
| 774 | (nnheader-insert-file-contents file) | |
| 775 | (nnmail-replace-status name value)) | |
| 776 | t)))) | |
| 777 | ||
| 778 | \f | |
| 779 | ;;; Interface optional functions ============================================ | |
| 780 | ||
| 781 | (deffoo nndiary-request-update-info (group info &optional server) | |
| 782 | (nndiary-possibly-change-directory group) | |
| 783 | (let ((timestamp (gnus-group-parameter-value (gnus-info-params info) | |
| 784 | 'timestamp t))) | |
| 785 | (if (not timestamp) | |
| 786 | (nnheader-report 'nndiary "Group %s doesn't have a timestamp" group) | |
| 787 | ;; else | |
| 788 | ;; Figure out which articles should be re-new'ed | |
| 789 | (let ((articles (nndiary-flatten (gnus-info-read info) 0)) | |
| 790 | article file unread buf) | |
| 791 | (save-excursion | |
| 792 | (setq buf (nnheader-set-temp-buffer " *nndiary update*")) | |
| 793 | (while (setq article (pop articles)) | |
| 794 | (setq file (concat nndiary-current-directory | |
| 795 | (int-to-string article))) | |
| 796 | (and (file-exists-p file) | |
| 797 | (nndiary-renew-article-p file timestamp) | |
| 798 | (push article unread))) | |
| 799 | ;;(message "unread: %s" unread) | |
| 800 | (sit-for 1) | |
| 801 | (kill-buffer buf)) | |
| 802 | (setq unread (sort unread '<)) | |
| 803 | (and unread | |
| 804 | (gnus-info-set-read info (gnus-update-read-articles | |
| 805 | (gnus-info-group info) unread t))) | |
| 806 | )) | |
| 807 | (run-hook-with-args 'nndiary-request-update-info-hooks | |
| 808 | (gnus-info-group info)) | |
| 809 | t)) | |
| 810 | ||
| 811 | ||
| 812 | \f | |
| 813 | ;;; Internal functions ====================================================== | |
| 814 | ||
| 815 | (defun nndiary-article-to-file (article) | |
| 816 | (nndiary-update-file-alist) | |
| 817 | (let (file) | |
| 818 | (if (setq file (cdr (assq article nndiary-article-file-alist))) | |
| 819 | (expand-file-name file nndiary-current-directory) | |
| 820 | ;; Just to make sure nothing went wrong when reading over NFS -- | |
| 821 | ;; check once more. | |
| 822 | (if nndiary-check-directory-twice | |
| 823 | (when (file-exists-p | |
| 824 | (setq file (expand-file-name (number-to-string article) | |
| 825 | nndiary-current-directory))) | |
| 826 | (nndiary-update-file-alist t) | |
| 827 | file))))) | |
| 828 | ||
| 829 | (defun nndiary-deletable-article-p (group article) | |
| 830 | "Say whether ARTICLE in GROUP can be deleted." | |
| 831 | (let (path) | |
| 832 | (when (setq path (nndiary-article-to-file article)) | |
| 833 | (when (file-writable-p path) | |
| 834 | (or (not nnmail-keep-last-article) | |
| 835 | (not (eq (cdr (nth 1 (assoc group nndiary-group-alist))) | |
| 836 | article))))))) | |
| 837 | ||
| 838 | ;; Find an article number in the current group given the Message-ID. | |
| 839 | (defun nndiary-find-group-number (id) | |
| 20a673b2 | 840 | (with-current-buffer (get-buffer-create " *nndiary id*") |
| 23f87bed MB |
841 | (let ((alist nndiary-group-alist) |
| 842 | number) | |
| 843 | ;; We want to look through all .overview files, but we want to | |
| 844 | ;; start with the one in the current directory. It seems most | |
| 845 | ;; likely that the article we are looking for is in that group. | |
| 846 | (if (setq number (nndiary-find-id nndiary-current-group id)) | |
| 847 | (cons nndiary-current-group number) | |
| 848 | ;; It wasn't there, so we look through the other groups as well. | |
| 849 | (while (and (not number) | |
| 850 | alist) | |
| 851 | (or (string= (caar alist) nndiary-current-group) | |
| 852 | (setq number (nndiary-find-id (caar alist) id))) | |
| 853 | (or number | |
| 854 | (setq alist (cdr alist)))) | |
| 855 | (and number | |
| 856 | (cons (caar alist) number)))))) | |
| 857 | ||
| 858 | (defun nndiary-find-id (group id) | |
| 859 | (erase-buffer) | |
| 860 | (let ((nov (expand-file-name nndiary-nov-file-name | |
| 861 | (nnmail-group-pathname group | |
| 862 | nndiary-directory))) | |
| 863 | number found) | |
| 864 | (when (file-exists-p nov) | |
| 865 | (nnheader-insert-file-contents nov) | |
| 866 | (while (and (not found) | |
| 867 | (search-forward id nil t)) ; We find the ID. | |
| 868 | ;; And the id is in the fourth field. | |
| 869 | (if (not (and (search-backward "\t" nil t 4) | |
| 01c52d31 | 870 | (not (search-backward"\t" (point-at-bol) t)))) |
| 23f87bed MB |
871 | (forward-line 1) |
| 872 | (beginning-of-line) | |
| 873 | (setq found t) | |
| 874 | ;; We return the article number. | |
| 875 | (setq number | |
| 876 | (ignore-errors (read (current-buffer)))))) | |
| 877 | number))) | |
| 878 | ||
| 879 | (defun nndiary-retrieve-headers-with-nov (articles &optional fetch-old) | |
| 880 | (if (or gnus-nov-is-evil nndiary-nov-is-evil) | |
| 881 | nil | |
| 882 | (let ((nov (expand-file-name nndiary-nov-file-name | |
| 883 | nndiary-current-directory))) | |
| 884 | (when (file-exists-p nov) | |
| 20a673b2 | 885 | (with-current-buffer nntp-server-buffer |
| 23f87bed MB |
886 | (erase-buffer) |
| 887 | (nnheader-insert-file-contents nov) | |
| 888 | (if (and fetch-old | |
| 889 | (not (numberp fetch-old))) | |
| 890 | t ; Don't remove anything. | |
| 891 | (nnheader-nov-delete-outside-range | |
| 892 | (if fetch-old (max 1 (- (car articles) fetch-old)) | |
| 893 | (car articles)) | |
| 894 | (car (last articles))) | |
| 895 | t)))))) | |
| 896 | ||
| 897 | (defun nndiary-possibly-change-directory (group &optional server) | |
| 898 | (when (and server | |
| 899 | (not (nndiary-server-opened server))) | |
| 900 | (nndiary-open-server server)) | |
| 901 | (if (not group) | |
| 902 | t | |
| 903 | (let ((pathname (nnmail-group-pathname group nndiary-directory)) | |
| 904 | (file-name-coding-system nnmail-pathname-coding-system)) | |
| 905 | (when (not (equal pathname nndiary-current-directory)) | |
| 906 | (setq nndiary-current-directory pathname | |
| 907 | nndiary-current-group group | |
| 908 | nndiary-article-file-alist nil)) | |
| 909 | (file-exists-p nndiary-current-directory)))) | |
| 910 | ||
| 911 | (defun nndiary-possibly-create-directory (group) | |
| 912 | (let ((dir (nnmail-group-pathname group nndiary-directory))) | |
| 913 | (unless (file-exists-p dir) | |
| 914 | (make-directory (directory-file-name dir) t) | |
| 915 | (nnheader-message 5 "Creating mail directory %s" dir)))) | |
| 916 | ||
| 917 | (defun nndiary-save-mail (group-art) | |
| 918 | "Called narrowed to an article." | |
| 919 | (let (chars headers) | |
| 920 | (setq chars (nnmail-insert-lines)) | |
| 921 | (nnmail-insert-xref group-art) | |
| 922 | (run-hooks 'nnmail-prepare-save-mail-hook) | |
| 923 | (run-hooks 'nndiary-prepare-save-mail-hook) | |
| 924 | (goto-char (point-min)) | |
| 925 | (while (looking-at "From ") | |
| 926 | (replace-match "X-From-Line: ") | |
| 927 | (forward-line 1)) | |
| 928 | ;; We save the article in all the groups it belongs in. | |
| 929 | (let ((ga group-art) | |
| 930 | first) | |
| 931 | (while ga | |
| 932 | (nndiary-possibly-create-directory (caar ga)) | |
| 933 | (let ((file (concat (nnmail-group-pathname | |
| 934 | (caar ga) nndiary-directory) | |
| 935 | (int-to-string (cdar ga))))) | |
| 936 | (if first | |
| 937 | ;; It was already saved, so we just make a hard link. | |
| 938 | (funcall nnmail-crosspost-link-function first file t) | |
| 939 | ;; Save the article. | |
| 940 | (nnmail-write-region (point-min) (point-max) file nil | |
| 941 | (if (nnheader-be-verbose 5) nil 'nomesg)) | |
| 942 | (setq first file))) | |
| 943 | (setq ga (cdr ga)))) | |
| 944 | ;; Generate a nov line for this article. We generate the nov | |
| 945 | ;; line after saving, because nov generation destroys the | |
| 946 | ;; header. | |
| 947 | (setq headers (nndiary-parse-head chars)) | |
| 948 | ;; Output the nov line to all nov databases that should have it. | |
| 949 | (let ((ga group-art)) | |
| 950 | (while ga | |
| 951 | (nndiary-add-nov (caar ga) (cdar ga) headers) | |
| 952 | (setq ga (cdr ga)))) | |
| 953 | group-art)) | |
| 954 | ||
| 955 | (defun nndiary-active-number (group) | |
| 956 | "Compute the next article number in GROUP." | |
| 957 | (let ((active (cadr (assoc group nndiary-group-alist)))) | |
| 958 | ;; The group wasn't known to nndiary, so we just create an active | |
| 959 | ;; entry for it. | |
| 960 | (unless active | |
| 961 | ;; Perhaps the active file was corrupt? See whether | |
| 962 | ;; there are any articles in this group. | |
| 963 | (nndiary-possibly-create-directory group) | |
| 964 | (nndiary-possibly-change-directory group) | |
| 965 | (unless nndiary-article-file-alist | |
| 966 | (setq nndiary-article-file-alist | |
| 967 | (sort | |
| 968 | (nnheader-article-to-file-alist nndiary-current-directory) | |
| 969 | 'car-less-than-car))) | |
| 970 | (setq active | |
| 971 | (if nndiary-article-file-alist | |
| 972 | (cons (caar nndiary-article-file-alist) | |
| 973 | (caar (last nndiary-article-file-alist))) | |
| 974 | (cons 1 0))) | |
| 975 | (push (list group active) nndiary-group-alist)) | |
| 976 | (setcdr active (1+ (cdr active))) | |
| 977 | (while (file-exists-p | |
| 978 | (expand-file-name (int-to-string (cdr active)) | |
| 979 | (nnmail-group-pathname group nndiary-directory))) | |
| 980 | (setcdr active (1+ (cdr active)))) | |
| 981 | (cdr active))) | |
| 982 | ||
| 983 | (defun nndiary-add-nov (group article headers) | |
| 984 | "Add a nov line for the GROUP base." | |
| 20a673b2 | 985 | (with-current-buffer (nndiary-open-nov group) |
| 23f87bed MB |
986 | (goto-char (point-max)) |
| 987 | (mail-header-set-number headers article) | |
| 988 | (nnheader-insert-nov headers))) | |
| 989 | ||
| 990 | (defsubst nndiary-header-value () | |
| 991 | (buffer-substring (match-end 0) (progn (end-of-line) (point)))) | |
| 992 | ||
| 993 | (defun nndiary-parse-head (chars &optional number) | |
| 994 | "Parse the head of the current buffer." | |
| 995 | (save-excursion | |
| 996 | (save-restriction | |
| 997 | (unless (zerop (buffer-size)) | |
| 998 | (narrow-to-region | |
| 999 | (goto-char (point-min)) | |
| 1000 | (if (search-forward "\n\n" nil t) (1- (point)) (point-max)))) | |
| 1001 | (let ((headers (nnheader-parse-naked-head))) | |
| 1002 | (mail-header-set-chars headers chars) | |
| 1003 | (mail-header-set-number headers number) | |
| 1004 | headers)))) | |
| 1005 | ||
| 1006 | (defun nndiary-open-nov (group) | |
| 1007 | (or (cdr (assoc group nndiary-nov-buffer-alist)) | |
| 1008 | (let ((buffer (get-buffer-create (format " *nndiary overview %s*" | |
| 1009 | group)))) | |
| 20a673b2 | 1010 | (with-current-buffer buffer |
| 23f87bed MB |
1011 | (set (make-local-variable 'nndiary-nov-buffer-file-name) |
| 1012 | (expand-file-name | |
| 1013 | nndiary-nov-file-name | |
| 1014 | (nnmail-group-pathname group nndiary-directory))) | |
| 1015 | (erase-buffer) | |
| 1016 | (when (file-exists-p nndiary-nov-buffer-file-name) | |
| 1017 | (nnheader-insert-file-contents nndiary-nov-buffer-file-name))) | |
| 1018 | (push (cons group buffer) nndiary-nov-buffer-alist) | |
| 1019 | buffer))) | |
| 1020 | ||
| 1021 | (defun nndiary-save-nov () | |
| 1022 | (save-excursion | |
| 1023 | (while nndiary-nov-buffer-alist | |
| 1024 | (when (buffer-name (cdar nndiary-nov-buffer-alist)) | |
| 1025 | (set-buffer (cdar nndiary-nov-buffer-alist)) | |
| 1026 | (when (buffer-modified-p) | |
| 1027 | (nnmail-write-region 1 (point-max) nndiary-nov-buffer-file-name | |
| 1028 | nil 'nomesg)) | |
| 1029 | (set-buffer-modified-p nil) | |
| 1030 | (kill-buffer (current-buffer))) | |
| 1031 | (setq nndiary-nov-buffer-alist (cdr nndiary-nov-buffer-alist))))) | |
| 1032 | ||
| 1033 | ;;;###autoload | |
| 1034 | (defun nndiary-generate-nov-databases (&optional server) | |
| 1035 | "Generate NOV databases in all nndiary directories." | |
| 1036 | (interactive (list (or (nnoo-current-server 'nndiary) ""))) | |
| 1037 | ;; Read the active file to make sure we don't re-use articles | |
| 1038 | ;; numbers in empty groups. | |
| 1039 | (nnmail-activate 'nndiary) | |
| 1040 | (unless (nndiary-server-opened server) | |
| 1041 | (nndiary-open-server server)) | |
| 1042 | (setq nndiary-directory (expand-file-name nndiary-directory)) | |
| 1043 | ;; Recurse down the directories. | |
| 1044 | (nndiary-generate-nov-databases-1 nndiary-directory nil t) | |
| 1045 | ;; Save the active file. | |
| 1046 | (nnmail-save-active nndiary-group-alist nndiary-active-file)) | |
| 1047 | ||
| 1048 | (defun nndiary-generate-nov-databases-1 (dir &optional seen no-active) | |
| 1049 | "Regenerate the NOV database in DIR." | |
| 1050 | (interactive "DRegenerate NOV in: ") | |
| 1051 | (setq dir (file-name-as-directory dir)) | |
| 1052 | ;; Only scan this sub-tree if we haven't been here yet. | |
| 1053 | (unless (member (file-truename dir) seen) | |
| 1054 | (push (file-truename dir) seen) | |
| 1055 | ;; We descend recursively | |
| 1056 | (let ((dirs (directory-files dir t nil t)) | |
| 1057 | dir) | |
| 1058 | (while (setq dir (pop dirs)) | |
| 1059 | (when (and (not (string-match "^\\." (file-name-nondirectory dir))) | |
| 1060 | (file-directory-p dir)) | |
| 1061 | (nndiary-generate-nov-databases-1 dir seen)))) | |
| 1062 | ;; Do this directory. | |
| 73ab9865 | 1063 | (let ((nndiary-files (sort (nnheader-article-to-file-alist dir) |
| 23f87bed | 1064 | 'car-less-than-car))) |
| 73ab9865 | 1065 | (if (not nndiary-files) |
| 23f87bed MB |
1066 | (let* ((group (nnheader-file-to-group |
| 1067 | (directory-file-name dir) nndiary-directory)) | |
| 1068 | (info (cadr (assoc group nndiary-group-alist)))) | |
| 1069 | (when info | |
| 1070 | (setcar info (1+ (cdr info))))) | |
| 1071 | (funcall nndiary-generate-active-function dir) | |
| 1072 | ;; Generate the nov file. | |
| 73ab9865 | 1073 | (nndiary-generate-nov-file dir nndiary-files) |
| 23f87bed MB |
1074 | (unless no-active |
| 1075 | (nnmail-save-active nndiary-group-alist nndiary-active-file)))))) | |
| 1076 | ||
| 73ab9865 | 1077 | (defvar nndiary-files) ; dynamically bound in nndiary-generate-nov-databases-1 |
| 23f87bed MB |
1078 | (defun nndiary-generate-active-info (dir) |
| 1079 | ;; Update the active info for this group. | |
| 1080 | (let* ((group (nnheader-file-to-group | |
| 1081 | (directory-file-name dir) nndiary-directory)) | |
| 1082 | (entry (assoc group nndiary-group-alist)) | |
| 1083 | (last (or (caadr entry) 0))) | |
| 1084 | (setq nndiary-group-alist (delq entry nndiary-group-alist)) | |
| 1085 | (push (list group | |
| 73ab9865 | 1086 | (cons (or (caar nndiary-files) (1+ last)) |
| 23f87bed | 1087 | (max last |
| 73ab9865 | 1088 | (or (caar (last nndiary-files)) |
| 23f87bed MB |
1089 | 0)))) |
| 1090 | nndiary-group-alist))) | |
| 1091 | ||
| 1092 | (defun nndiary-generate-nov-file (dir files) | |
| 1093 | (let* ((dir (file-name-as-directory dir)) | |
| 1094 | (nov (concat dir nndiary-nov-file-name)) | |
| 1095 | (nov-buffer (get-buffer-create " *nov*")) | |
| 1096 | chars file headers) | |
| 20a673b2 KY |
1097 | ;; Init the nov buffer. |
| 1098 | (with-current-buffer nov-buffer | |
| 23f87bed MB |
1099 | (buffer-disable-undo) |
| 1100 | (erase-buffer) | |
| 1101 | (set-buffer nntp-server-buffer) | |
| 1102 | ;; Delete the old NOV file. | |
| 1103 | (when (file-exists-p nov) | |
| 1104 | (funcall nnmail-delete-file-function nov)) | |
| 1105 | (while files | |
| 1106 | (unless (file-directory-p (setq file (concat dir (cdar files)))) | |
| 1107 | (erase-buffer) | |
| 1108 | (nnheader-insert-file-contents file) | |
| 1109 | (narrow-to-region | |
| 1110 | (goto-char (point-min)) | |
| 1111 | (progn | |
| 1112 | (search-forward "\n\n" nil t) | |
| 1113 | (setq chars (- (point-max) (point))) | |
| 1114 | (max 1 (1- (point))))) | |
| 1115 | (unless (zerop (buffer-size)) | |
| 1116 | (goto-char (point-min)) | |
| 1117 | (setq headers (nndiary-parse-head chars (caar files))) | |
| 20a673b2 | 1118 | (with-current-buffer nov-buffer |
| 23f87bed MB |
1119 | (goto-char (point-max)) |
| 1120 | (nnheader-insert-nov headers))) | |
| 1121 | (widen)) | |
| 1122 | (setq files (cdr files))) | |
| 20a673b2 | 1123 | (with-current-buffer nov-buffer |
| 23f87bed MB |
1124 | (nnmail-write-region 1 (point-max) nov nil 'nomesg) |
| 1125 | (kill-buffer (current-buffer)))))) | |
| 1126 | ||
| 1127 | (defun nndiary-nov-delete-article (group article) | |
| 20a673b2 | 1128 | (with-current-buffer (nndiary-open-nov group) |
| 23f87bed MB |
1129 | (when (nnheader-find-nov-line article) |
| 1130 | (delete-region (point) (progn (forward-line 1) (point))) | |
| 1131 | (when (bobp) | |
| 1132 | (let ((active (cadr (assoc group nndiary-group-alist))) | |
| 1133 | num) | |
| 1134 | (when active | |
| 1135 | (if (eobp) | |
| 1136 | (setf (car active) (1+ (cdr active))) | |
| 1137 | (when (and (setq num (ignore-errors (read (current-buffer)))) | |
| 1138 | (numberp num)) | |
| 1139 | (setf (car active) num))))))) | |
| 1140 | t)) | |
| 1141 | ||
| 1142 | (defun nndiary-update-file-alist (&optional force) | |
| 1143 | (when (or (not nndiary-article-file-alist) | |
| 1144 | force) | |
| 1145 | (setq nndiary-article-file-alist | |
| 1146 | (nnheader-article-to-file-alist nndiary-current-directory)))) | |
| 1147 | ||
| 1148 | ||
| e9bd5782 MB |
1149 | (defun nndiary-string-to-number (str min &optional max) |
| 1150 | ;; Like `string-to-number' but barf if STR is not exactly an integer, and not | |
| 23f87bed MB |
1151 | ;; within the specified bounds. |
| 1152 | ;; Signals are caught by `nndiary-schedule'. | |
| 1153 | (if (not (string-match "^[ \t]*[0-9]+[ \t]*$" str)) | |
| 1154 | (nndiary-error "not an integer value") | |
| 1155 | ;; else | |
| e9bd5782 | 1156 | (let ((val (string-to-number str))) |
| 23f87bed MB |
1157 | (and (or (< val min) |
| 1158 | (and max (> val max))) | |
| 1159 | (nndiary-error "value out of range")) | |
| 1160 | val))) | |
| 1161 | ||
| 1162 | (defun nndiary-parse-schedule-value (str min-or-values max) | |
| 1163 | ;; Parse the schedule string STR, or signal an error. | |
| 6196cffe | 1164 | ;; Signals are caught by `nndiary-schedule'. |
| 23f87bed | 1165 | (if (string-match "[ \t]*\\*[ \t]*" str) |
| c80e3b4a | 1166 | ;; unspecified |
| 23f87bed | 1167 | nil |
| c80e3b4a | 1168 | ;; specified |
| 23f87bed MB |
1169 | (if (listp min-or-values) |
| 1170 | ;; min-or-values is values | |
| 1171 | ;; #### NOTE: this is actually only a hack for time zones. | |
| 1172 | (let ((val (and (string-match "[ \t]*\\([^ \t]+\\)[ \t]*" str) | |
| 1173 | (match-string 1 str)))) | |
| 1174 | (if (and val (setq val (assoc val min-or-values))) | |
| 1175 | (list (cadr val)) | |
| 1176 | (nndiary-error "invalid syntax"))) | |
| 1177 | ;; min-or-values is min | |
| 1178 | (mapcar | |
| 1179 | (lambda (val) | |
| 1180 | (let ((res (split-string val "-"))) | |
| 1181 | (cond | |
| 1182 | ((= (length res) 1) | |
| e9bd5782 | 1183 | (nndiary-string-to-number (car res) min-or-values max)) |
| 23f87bed MB |
1184 | ((= (length res) 2) |
| 1185 | ;; don't know if crontab accepts this, but ensure | |
| 1186 | ;; that BEG is <= END | |
| e9bd5782 MB |
1187 | (let ((beg (nndiary-string-to-number (car res) min-or-values max)) |
| 1188 | (end (nndiary-string-to-number (cadr res) min-or-values max))) | |
| 23f87bed MB |
1189 | (cond ((< beg end) |
| 1190 | (cons beg end)) | |
| 1191 | ((= beg end) | |
| 1192 | beg) | |
| 1193 | (t | |
| 1194 | (cons end beg))))) | |
| 1195 | (t | |
| 1196 | (nndiary-error "invalid syntax"))) | |
| 1197 | )) | |
| 1198 | (split-string str ","))) | |
| 1199 | )) | |
| 1200 | ||
| 1201 | ;; ### FIXME: remove this function if it's used only once. | |
| 1202 | (defun nndiary-parse-schedule (head min-or-values max) | |
| 1203 | ;; Parse the cron-like value of header X-Diary-HEAD in current buffer. | |
| 1204 | ;; - Returns nil if `*' | |
| 1205 | ;; - Otherwise returns a list of integers and/or ranges (BEG . END) | |
| 1206 | ;; The exception is the Timze-Zone value which is always of the form (STR). | |
| 6196cffe | 1207 | ;; Signals are caught by `nndiary-schedule'. |
| 23f87bed MB |
1208 | (let ((header (format "^X-Diary-%s: \\(.*\\)$" head))) |
| 1209 | (goto-char (point-min)) | |
| 1210 | (if (not (re-search-forward header nil t)) | |
| 1211 | (nndiary-error "header missing") | |
| 1212 | ;; else | |
| 1213 | (nndiary-parse-schedule-value (match-string 1) min-or-values max)) | |
| 1214 | )) | |
| 1215 | ||
| 1216 | (defun nndiary-max (spec) | |
| 1217 | ;; Returns the max of specification SPEC, or nil for permanent schedules. | |
| 1218 | (unless (null spec) | |
| 1219 | (let ((elts spec) | |
| 1220 | (max 0) | |
| 1221 | elt) | |
| 1222 | (while (setq elt (pop elts)) | |
| 1223 | (if (integerp elt) | |
| 1224 | (and (> elt max) (setq max elt)) | |
| 1225 | (and (> (cdr elt) max) (setq max (cdr elt))))) | |
| 1226 | max))) | |
| 1227 | ||
| 1228 | (defun nndiary-flatten (spec min &optional max) | |
| 1229 | ;; flatten the spec by expanding ranges to all possible values. | |
| 1230 | (let (flat n) | |
| 1231 | (cond ((null spec) | |
| 1232 | ;; this happens when I flatten something else than one of my | |
| 1233 | ;; schedules (a list of read articles for instance). | |
| 1234 | (unless (null max) | |
| 1235 | (setq n min) | |
| 1236 | (while (<= n max) | |
| 1237 | (push n flat) | |
| 1238 | (setq n (1+ n))))) | |
| 1239 | (t | |
| 1240 | (let ((elts spec) | |
| 1241 | elt) | |
| 1242 | (while (setq elt (pop elts)) | |
| 1243 | (if (integerp elt) | |
| 1244 | (push elt flat) | |
| 1245 | ;; else | |
| 1246 | (setq n (car elt)) | |
| 1247 | (while (<= n (cdr elt)) | |
| 1248 | (push n flat) | |
| 1249 | (setq n (1+ n)))))))) | |
| 1250 | flat)) | |
| 1251 | ||
| 1252 | (defun nndiary-unflatten (spec) | |
| 1253 | ;; opposite of flatten: build ranges if possible | |
| 1254 | (setq spec (sort spec '<)) | |
| 1255 | (let (min max res) | |
| 1256 | (while (setq min (pop spec)) | |
| 1257 | (setq max min) | |
| 1258 | (while (and (car spec) (= (car spec) (1+ max))) | |
| 1259 | (setq max (1+ max)) | |
| 1260 | (pop spec)) | |
| 1261 | (if (= max min) | |
| 1262 | (setq res (append res (list min))) | |
| 1263 | (setq res (append res (list (cons min max)))))) | |
| 1264 | res)) | |
| 1265 | ||
| 1266 | (defun nndiary-compute-reminders (date) | |
| 1267 | ;; Returns a list of times corresponding to the reminders of date DATE. | |
| 1268 | ;; See the comment in `nndiary-reminders' about rounding. | |
| 1269 | (let* ((reminders nndiary-reminders) | |
| 1270 | (date-elts (decode-time date)) | |
| 1271 | ;; ### NOTE: out-of-range values are accepted by encode-time. This | |
| 1272 | ;; makes our life easier. | |
| 1273 | (monday (- (nth 3 date-elts) | |
| 1274 | (if nndiary-week-starts-on-monday | |
| 1275 | (if (zerop (nth 6 date-elts)) | |
| 1276 | 6 | |
| 1277 | (- (nth 6 date-elts) 1)) | |
| 1278 | (nth 6 date-elts)))) | |
| 1279 | reminder res) | |
| 1280 | ;; remove the DOW and DST entries | |
| 1281 | (setcdr (nthcdr 5 date-elts) (nthcdr 8 date-elts)) | |
| 1282 | (while (setq reminder (pop reminders)) | |
| 1283 | (push | |
| 1284 | (cond ((eq (cdr reminder) 'minute) | |
| 1285 | (subtract-time | |
| 1286 | (apply 'encode-time 0 (nthcdr 1 date-elts)) | |
| 1287 | (seconds-to-time (* (car reminder) 60.0)))) | |
| 1288 | ((eq (cdr reminder) 'hour) | |
| 1289 | (subtract-time | |
| 1290 | (apply 'encode-time 0 0 (nthcdr 2 date-elts)) | |
| 1291 | (seconds-to-time (* (car reminder) 3600.0)))) | |
| 1292 | ((eq (cdr reminder) 'day) | |
| 1293 | (subtract-time | |
| 1294 | (apply 'encode-time 0 0 0 (nthcdr 3 date-elts)) | |
| 1295 | (seconds-to-time (* (car reminder) 86400.0)))) | |
| 1296 | ((eq (cdr reminder) 'week) | |
| 1297 | (subtract-time | |
| 1298 | (apply 'encode-time 0 0 0 monday (nthcdr 4 date-elts)) | |
| 1299 | (seconds-to-time (* (car reminder) 604800.0)))) | |
| 1300 | ((eq (cdr reminder) 'month) | |
| 1301 | (subtract-time | |
| 1302 | (apply 'encode-time 0 0 0 1 (nthcdr 4 date-elts)) | |
| 1303 | (seconds-to-time (* (car reminder) 18748800.0)))) | |
| 1304 | ((eq (cdr reminder) 'year) | |
| 1305 | (subtract-time | |
| 1306 | (apply 'encode-time 0 0 0 1 1 (nthcdr 5 date-elts)) | |
| 1307 | (seconds-to-time (* (car reminder) 400861056.0))))) | |
| 1308 | res)) | |
| 1309 | (sort res 'time-less-p))) | |
| 1310 | ||
| 1311 | (defun nndiary-last-occurence (sched) | |
| 5a89f0a7 | 1312 | ;; Returns the last occurrence of schedule SCHED as an Emacs time struct, or |
| 23f87bed MB |
1313 | ;; nil for permanent schedule or errors. |
| 1314 | (let ((minute (nndiary-max (nth 0 sched))) | |
| 1315 | (hour (nndiary-max (nth 1 sched))) | |
| 1316 | (year (nndiary-max (nth 4 sched))) | |
| 1317 | (time-zone (or (and (nth 6 sched) (car (nth 6 sched))) | |
| 1318 | (current-time-zone)))) | |
| 1319 | (when year | |
| 1320 | (or minute (setq minute 59)) | |
| 1321 | (or hour (setq hour 23)) | |
| 1322 | ;; I'll just compute all possible values and test them by decreasing | |
| e1dbe924 | 1323 | ;; order until one succeeds. This is probably quite rude, but I got |
| 23f87bed MB |
1324 | ;; bored in finding a good algorithm for doing that ;-) |
| 1325 | ;; ### FIXME: remove identical entries. | |
| 1326 | (let ((dom-list (nth 2 sched)) | |
| 1327 | (month-list (sort (nndiary-flatten (nth 3 sched) 1 12) '>)) | |
| 1328 | (year-list (sort (nndiary-flatten (nth 4 sched) 1971) '>)) | |
| 1329 | (dow-list (nth 5 sched))) | |
| 1330 | ;; Special case: an asterisk in one of the days specifications means | |
| 1331 | ;; that only the other should be taken into account. If both are | |
| 1332 | ;; unspecified, you would get all possible days in both. | |
| 1333 | (cond ((null dow-list) | |
| 1334 | ;; this gets all days if dom-list is nil | |
| 1335 | (setq dom-list (nndiary-flatten dom-list 1 31))) | |
| 1336 | ((null dom-list) | |
| 1337 | ;; this also gets all days if dow-list is nil | |
| 1338 | (setq dow-list (nndiary-flatten dow-list 0 6))) | |
| 1339 | (t | |
| 1340 | (setq dom-list (nndiary-flatten dom-list 1 31)) | |
| 1341 | (setq dow-list (nndiary-flatten dow-list 0 6)))) | |
| 1342 | (or | |
| 1343 | (catch 'found | |
| 1344 | (while (setq year (pop year-list)) | |
| 1345 | (let ((months month-list) | |
| 1346 | month) | |
| 1347 | (while (setq month (pop months)) | |
| 1348 | ;; Now we must merge the Dows with the Doms. To do that, we | |
| 1349 | ;; have to know which day is the 1st one for this month. | |
| 1350 | ;; Maybe there's simpler, but decode-time(encode-time) will | |
| 1351 | ;; give us the answer. | |
| 1352 | (let ((first (nth 6 (decode-time | |
| 1353 | (encode-time 0 0 0 1 month year | |
| 1354 | time-zone)))) | |
| 1355 | (max (cond ((= month 2) | |
| 1356 | (if (date-leap-year-p year) 29 28)) | |
| 1357 | ((<= month 7) | |
| 1358 | (if (zerop (% month 2)) 30 31)) | |
| 1359 | (t | |
| 1360 | (if (zerop (% month 2)) 31 30)))) | |
| 1361 | (doms dom-list) | |
| 1362 | (dows dow-list) | |
| 1363 | day days) | |
| 1364 | ;; first, review the doms to see if they are valid. | |
| 1365 | (while (setq day (pop doms)) | |
| 1366 | (and (<= day max) | |
| 1367 | (push day days))) | |
| 1368 | ;; second add all possible dows | |
| 1369 | (while (setq day (pop dows)) | |
| 1370 | ;; days start at 1. | |
| 1371 | (setq day (1+ (- day first))) | |
| 1372 | (and (< day 0) (setq day (+ 7 day))) | |
| 1373 | (while (<= day max) | |
| 1374 | (push day days) | |
| 1375 | (setq day (+ 7 day)))) | |
| 1376 | ;; Finally, if we have some days, they are valid | |
| 1377 | (when days | |
| 1378 | (sort days '>) | |
| 1379 | (throw 'found | |
| 1380 | (encode-time 0 minute hour | |
| 1381 | (car days) month year time-zone))) | |
| 1382 | ))))) | |
| 5a89f0a7 | 1383 | ;; There's an upper limit, but we didn't find any last occurrence. |
| 23f87bed MB |
1384 | ;; This means that the schedule is undecidable. This can happen if |
| 1385 | ;; you happen to say something like "each Feb 31 until 2038". | |
| 1386 | (progn | |
| 1387 | (nnheader-report 'nndiary "Undecidable schedule") | |
| 1388 | nil)) | |
| 1389 | )))) | |
| 1390 | ||
| 1391 | (defun nndiary-next-occurence (sched now) | |
| 5a89f0a7 JB |
1392 | ;; Returns the next occurrence of schedule SCHED, starting from time NOW. |
| 1393 | ;; If there's no next occurrence, returns the last one (if any) which is then | |
| 23f87bed MB |
1394 | ;; in the past. |
| 1395 | (let* ((today (decode-time now)) | |
| 1396 | (this-minute (nth 1 today)) | |
| 1397 | (this-hour (nth 2 today)) | |
| 1398 | (this-day (nth 3 today)) | |
| 1399 | (this-month (nth 4 today)) | |
| 1400 | (this-year (nth 5 today)) | |
| 1401 | (minute-list (sort (nndiary-flatten (nth 0 sched) 0 59) '<)) | |
| 1402 | (hour-list (sort (nndiary-flatten (nth 1 sched) 0 23) '<)) | |
| 1403 | (dom-list (nth 2 sched)) | |
| 1404 | (month-list (sort (nndiary-flatten (nth 3 sched) 1 12) '<)) | |
| 1405 | (years (if (nth 4 sched) | |
| 1406 | (sort (nndiary-flatten (nth 4 sched) 1971) '<) | |
| 1407 | t)) | |
| 1408 | (dow-list (nth 5 sched)) | |
| 1409 | (year (1- this-year)) | |
| 1410 | (time-zone (or (and (nth 6 sched) (car (nth 6 sched))) | |
| 1411 | (current-time-zone)))) | |
| 1412 | ;; Special case: an asterisk in one of the days specifications means that | |
| 1413 | ;; only the other should be taken into account. If both are unspecified, | |
| 1414 | ;; you would get all possible days in both. | |
| 1415 | (cond ((null dow-list) | |
| 1416 | ;; this gets all days if dom-list is nil | |
| 1417 | (setq dom-list (nndiary-flatten dom-list 1 31))) | |
| 1418 | ((null dom-list) | |
| 1419 | ;; this also gets all days if dow-list is nil | |
| 1420 | (setq dow-list (nndiary-flatten dow-list 0 6))) | |
| 1421 | (t | |
| 1422 | (setq dom-list (nndiary-flatten dom-list 1 31)) | |
| 1423 | (setq dow-list (nndiary-flatten dow-list 0 6)))) | |
| 1424 | ;; Remove past years. | |
| 1425 | (unless (eq years t) | |
| 1426 | (while (and (car years) (< (car years) this-year)) | |
| 1427 | (pop years))) | |
| 1428 | (if years | |
| 1429 | ;; Because we might not be limited in years, we must guard against | |
| 1430 | ;; infinite loops. Appart from cases like Feb 31, there are probably | |
| 1431 | ;; other ones, (no monday XXX 2nd etc). I don't know any algorithm to | |
| 1432 | ;; decide this, so I assume that if we reach 10 years later, the | |
| 1433 | ;; schedule is undecidable. | |
| 1434 | (or | |
| 1435 | (catch 'found | |
| 1436 | (while (if (eq years t) | |
| 1437 | (and (setq year (1+ year)) | |
| 1438 | (<= year (+ 10 this-year))) | |
| 1439 | (setq year (pop years))) | |
| 1440 | (let ((months month-list) | |
| 1441 | month) | |
| 1442 | ;; Remove past months for this year. | |
| 1443 | (and (= year this-year) | |
| 1444 | (while (and (car months) (< (car months) this-month)) | |
| 1445 | (pop months))) | |
| 1446 | (while (setq month (pop months)) | |
| 1447 | ;; Now we must merge the Dows with the Doms. To do that, we | |
| 1448 | ;; have to know which day is the 1st one for this month. | |
| 1449 | ;; Maybe there's simpler, but decode-time(encode-time) will | |
| 1450 | ;; give us the answer. | |
| 1451 | (let ((first (nth 6 (decode-time | |
| 1452 | (encode-time 0 0 0 1 month year | |
| 1453 | time-zone)))) | |
| 1454 | (max (cond ((= month 2) | |
| 1455 | (if (date-leap-year-p year) 29 28)) | |
| 1456 | ((<= month 7) | |
| 1457 | (if (zerop (% month 2)) 30 31)) | |
| 1458 | (t | |
| 1459 | (if (zerop (% month 2)) 31 30)))) | |
| 1460 | (doms dom-list) | |
| 1461 | (dows dow-list) | |
| 1462 | day days) | |
| 1463 | ;; first, review the doms to see if they are valid. | |
| 1464 | (while (setq day (pop doms)) | |
| 1465 | (and (<= day max) | |
| 1466 | (push day days))) | |
| 1467 | ;; second add all possible dows | |
| 1468 | (while (setq day (pop dows)) | |
| 1469 | ;; days start at 1. | |
| 1470 | (setq day (1+ (- day first))) | |
| 1471 | (and (< day 0) (setq day (+ 7 day))) | |
| 1472 | (while (<= day max) | |
| 1473 | (push day days) | |
| 1474 | (setq day (+ 7 day)))) | |
| 1475 | ;; Aaaaaaall right. Now we have a valid list of DAYS for | |
| 1476 | ;; this month and this year. | |
| 1477 | (when days | |
| 1478 | (setq days (sort days '<)) | |
| 1479 | ;; Remove past days for this year and this month. | |
| 1480 | (and (= year this-year) | |
| 1481 | (= month this-month) | |
| 1482 | (while (and (car days) (< (car days) this-day)) | |
| 1483 | (pop days))) | |
| 1484 | (while (setq day (pop days)) | |
| 1485 | (let ((hours hour-list) | |
| 1486 | hour) | |
| 1487 | ;; Remove past hours for this year, this month and | |
| 1488 | ;; this day. | |
| 1489 | (and (= year this-year) | |
| 1490 | (= month this-month) | |
| 1491 | (= day this-day) | |
| 1492 | (while (and (car hours) | |
| 1493 | (< (car hours) this-hour)) | |
| 1494 | (pop hours))) | |
| 1495 | (while (setq hour (pop hours)) | |
| 1496 | (let ((minutes minute-list) | |
| 1497 | minute) | |
| 1498 | ;; Remove past hours for this year, this month, | |
| 1499 | ;; this day and this hour. | |
| 1500 | (and (= year this-year) | |
| 1501 | (= month this-month) | |
| 1502 | (= day this-day) | |
| 1503 | (= hour this-hour) | |
| 1504 | (while (and (car minutes) | |
| 1505 | (< (car minutes) this-minute)) | |
| 1506 | (pop minutes))) | |
| 1507 | (while (setq minute (pop minutes)) | |
| 1508 | ;; Ouch! Here, we've got a complete valid | |
| 1509 | ;; schedule. It's a good one if it's in the | |
| 1510 | ;; future. | |
| 1511 | (let ((time (encode-time 0 minute hour day | |
| 1512 | month year | |
| 1513 | time-zone))) | |
| 1514 | (and (time-less-p now time) | |
| 1515 | (throw 'found time))) | |
| 1516 | )))) | |
| 1517 | )) | |
| 1518 | ))) | |
| 1519 | )) | |
| 1520 | (nndiary-last-occurence sched)) | |
| 1521 | ;; else | |
| 1522 | (nndiary-last-occurence sched)) | |
| 1523 | )) | |
| 1524 | ||
| 1525 | (defun nndiary-expired-article-p (file) | |
| 1526 | (with-temp-buffer | |
| 1527 | (if (nnheader-insert-head file) | |
| 1528 | (let ((sched (nndiary-schedule))) | |
| 1529 | ;; An article has expired if its last schedule (if any) is in the | |
| 1530 | ;; past. A permanent schedule never expires. | |
| 1531 | (and sched | |
| 1532 | (setq sched (nndiary-last-occurence sched)) | |
| 1533 | (time-less-p sched (current-time)))) | |
| 1534 | ;; else | |
| 1535 | (nnheader-report 'nndiary "Could not read file %s" file) | |
| 1536 | nil) | |
| 1537 | )) | |
| 1538 | ||
| 1539 | (defun nndiary-renew-article-p (file timestamp) | |
| 1540 | (erase-buffer) | |
| 1541 | (if (nnheader-insert-head file) | |
| 1542 | (let ((now (current-time)) | |
| 1543 | (sched (nndiary-schedule))) | |
| 1544 | ;; The article should be re-considered as unread if there's a reminder | |
| 1545 | ;; between the group timestamp and the current time. | |
| 1546 | (when (and sched (setq sched (nndiary-next-occurence sched now))) | |
| 5a89f0a7 | 1547 | (let ((reminders ;; add the next occurrence itself at the end. |
| 23f87bed MB |
1548 | (append (nndiary-compute-reminders sched) (list sched)))) |
| 1549 | (while (and reminders (time-less-p (car reminders) timestamp)) | |
| 1550 | (pop reminders)) | |
| 1551 | ;; The reminders might be empty if the last date is in the past, | |
| 5a89f0a7 | 1552 | ;; or we've got at least the next occurrence itself left. All past |
| 23f87bed MB |
1553 | ;; dates are renewed. |
| 1554 | (or (not reminders) | |
| 1555 | (time-less-p (car reminders) now))) | |
| 1556 | )) | |
| 1557 | ;; else | |
| 1558 | (nnheader-report 'nndiary "Could not read file %s" file) | |
| 1559 | nil)) | |
| 1560 | ||
| 1561 | ;; The end... =============================================================== | |
| 1562 | ||
| 01c52d31 MB |
1563 | (dolist (header nndiary-headers) |
| 1564 | (setq header (intern (format "X-Diary-%s" (car header)))) | |
| 1565 | ;; Required for building NOV databases and some other stuff. | |
| 1566 | (add-to-list 'gnus-extra-headers header) | |
| 1567 | (add-to-list 'nnmail-extra-headers header)) | |
| 23f87bed MB |
1568 | |
| 1569 | (unless (assoc "nndiary" gnus-valid-select-methods) | |
| 1570 | (gnus-declare-backend "nndiary" 'post-mail 'respool 'address)) | |
| 1571 | ||
| 1572 | (provide 'nndiary) | |
| 1573 | ||
| 23f87bed | 1574 | ;;; nndiary.el ends here |