code.delx.au - gnu-emacs/blob - lisp/gnus/gnus-uu.el

   1 ;;; gnus-uu.el --- extract (uu)encoded files in Gnus
   2
   3 ;; Copyright (C) 1985-1987, 1993-1998, 2000-2016 Free Software
   4 ;; Foundation, Inc.
   5
   6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   7 ;; Created: 2 Oct 1993
   8 ;; Keyword: news
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (eval-when-compile (require 'cl))
  30
  31 (require 'gnus)
  32 (require 'gnus-art)
  33 (require 'message)
  34 (require 'gnus-msg)
  35 (require 'mm-decode)
  36 (require 'yenc)
  37
  38 (defgroup gnus-extract nil
  39   "Extracting encoded files."
  40   :prefix "gnus-uu-"
  41   :group 'gnus)
  42
  43 (defgroup gnus-extract-view nil
  44   "Viewing extracted files."
  45   :group 'gnus-extract)
  46
  47 (defgroup gnus-extract-archive nil
  48   "Extracting encoded archives."
  49   :group 'gnus-extract)
  50
  51 (defgroup gnus-extract-post nil
  52   "Extracting encoded archives."
  53   :prefix "gnus-uu-post"
  54   :group 'gnus-extract)
  55
  56 ;; Default viewing action rules
  57
  58 (defcustom gnus-uu-default-view-rules
  59   '(("\\.te?xt$\\|\\.doc$\\|read.*me\\|\\.c?$\\|\\.h$\\|\\.bat$\\|\\.asm$\\|makefile" "cat %s | sed 's/\r$//'")
  60     ("\\.pas$" "cat %s | sed 's/\r$//'")
  61     ("\\.[1-9]$" "groff -mandoc -Tascii %s | sed s/\b.//g")
  62     ("\\.\\(jpe?g\\|gif\\|tiff?\\|p[pgb]m\\|xwd\\|xbm\\|pcx\\)$" "display")
  63     ("\\.tga$" "tgatoppm %s | ee -")
  64     ("\\.\\(wav\\|aiff\\|hcom\\|u[blw]\\|s[bfw]\\|voc\\|smp\\)$"
  65      "sox -v .5 %s -t .au -u - > /dev/audio")
  66     ("\\.au$" "cat %s > /dev/audio")
  67     ("\\.midi?$" "playmidi -f")
  68     ("\\.mod$" "str32")
  69     ("\\.ps$" "ghostview")
  70     ("\\.dvi$" "xdvi")
  71     ("\\.html$" "xmosaic")
  72     ("\\.mpe?g$" "mpeg_play")
  73     ("\\.\\(flc\\|fli\\|rle\\|iff\\|pfx\\|avi\\|sme\\|rpza\\|dl\\|qt\\|rsrc\\|mov\\)$" "xanim")
  74     ("\\.\\(tar\\|arj\\|zip\\|zoo\\|arc\\|gz\\|Z\\|lzh\\|ar\\|lha\\)$"
  75      "gnus-uu-archive"))
  76   "*Default actions to be taken when the user asks to view a file.
  77 To change the behavior, you can either edit this variable or set
  78 `gnus-uu-user-view-rules' to something useful.
  79
  80 For example:
  81
  82 To make gnus-uu use `xli' to display JPEG and GIF files, put the
  83 following in your .emacs file:
  84
  85   (setq gnus-uu-user-view-rules \\='((\"jpg$\\\\|gif$\" \"xli\")))
  86
  87 Both these variables are lists of lists with two string elements.  The
  88 first string is a regular expression.  If the file name matches this
  89 regular expression, the command in the second string is executed with
  90 the file as an argument.
  91
  92 If the command string contains \"%s\", the file name will be inserted
  93 at that point in the command string.  If there's no \"%s\" in the
  94 command string, the file name will be appended to the command string
  95 before executing.
  96
  97 There are several user variables to tailor the behavior of gnus-uu to
  98 your needs.  First we have `gnus-uu-user-view-rules', which is the
  99 variable gnus-uu first consults when trying to decide how to view a
 100 file.  If this variable contains no matches, gnus-uu examines the
 101 default rule variable provided in this package.  If gnus-uu finds no
 102 match here, it uses `gnus-uu-user-view-rules-end' to try to make a
 103 match."
 104   :group 'gnus-extract-view
 105   :type '(repeat (group regexp (string :tag "Command"))))
 106
 107 (defcustom gnus-uu-user-view-rules nil
 108   "What actions are to be taken to view a file.
 109 See the documentation on the `gnus-uu-default-view-rules' variable for
 110 details."
 111   :group 'gnus-extract-view
 112   :type '(repeat (group regexp (string :tag "Command"))))
 113
 114 (defcustom gnus-uu-user-view-rules-end
 115   '(("" "file"))
 116   "*What actions are to be taken if no rule matched the file name.
 117 See the documentation on the `gnus-uu-default-view-rules' variable for
 118 details."
 119   :group 'gnus-extract-view
 120   :type '(repeat (group regexp (string :tag "Command"))))
 121
 122 ;; Default unpacking commands
 123
 124 (defcustom gnus-uu-default-archive-rules
 125   '(("\\.tar$" "tar xf")
 126     ("\\.zip$" "unzip -o")
 127     ("\\.ar$" "ar x")
 128     ("\\.arj$" "unarj x")
 129     ("\\.zoo$" "zoo -e")
 130     ("\\.\\(lzh\\|lha\\)$" "lha x")
 131     ("\\.Z$" "uncompress")
 132     ("\\.gz$" "gunzip")
 133     ("\\.arc$" "arc -x"))
 134   "*See `gnus-uu-user-archive-rules'."
 135   :group 'gnus-extract-archive
 136   :type '(repeat (group regexp (string :tag "Command"))))
 137
 138 (defvar gnus-uu-destructive-archivers
 139   (list "uncompress" "gunzip"))
 140
 141 (defcustom gnus-uu-user-archive-rules nil
 142   "A list that can be set to override the default archive unpacking commands.
 143 To use, for instance, `untar' to unpack tar files and `zip -x' to
 144 unpack zip files, say the following:
 145   (setq gnus-uu-user-archive-rules
 146     \\='((\"\\\\.tar$\" \"untar\")
 147       (\"\\\\.zip$\" \"zip -x\")))"
 148   :group 'gnus-extract-archive
 149   :type '(repeat (group regexp (string :tag "Command"))))
 150
 151 (defcustom gnus-uu-ignore-files-by-name nil
 152   "*A regular expression saying what files should not be viewed based on name.
 153 If, for instance, you want gnus-uu to ignore all .au and .wav files,
 154 you could say something like
 155
 156   (setq gnus-uu-ignore-files-by-name \"\\\\.au$\\\\|\\\\.wav$\")
 157
 158 Note that this variable can be used in conjunction with the
 159 `gnus-uu-ignore-files-by-type' variable."
 160   :group 'gnus-extract
 161   :type '(choice (const :tag "off" nil)
 162                  (regexp :format "%v")))
 163
 164 (defcustom gnus-uu-ignore-files-by-type nil
 165   "*A regular expression saying what files that shouldn't be viewed, based on MIME file type.
 166 If, for instance, you want gnus-uu to ignore all audio files and all mpegs,
 167 you could say something like
 168
 169   (setq gnus-uu-ignore-files-by-type \"audio/\\\\|video/mpeg\")
 170
 171 Note that this variable can be used in conjunction with the
 172 `gnus-uu-ignore-files-by-name' variable."
 173   :group 'gnus-extract
 174   :type '(choice (const :tag "off" nil)
 175                  (regexp :format "%v")))
 176
 177 ;; Pseudo-MIME support
 178
 179 (defconst gnus-uu-ext-to-mime-list
 180   '(("\\.gif$" "image/gif")
 181     ("\\.jpe?g$" "image/jpeg")
 182     ("\\.tiff?$" "image/tiff")
 183     ("\\.xwd$" "image/xwd")
 184     ("\\.pbm$" "image/pbm")
 185     ("\\.pgm$" "image/pgm")
 186     ("\\.ppm$" "image/ppm")
 187     ("\\.xbm$" "image/xbm")
 188     ("\\.pcx$" "image/pcx")
 189     ("\\.tga$" "image/tga")
 190     ("\\.ps$" "image/postscript")
 191     ("\\.fli$" "video/fli")
 192     ("\\.wav$" "audio/wav")
 193     ("\\.aiff$" "audio/aiff")
 194     ("\\.hcom$" "audio/hcom")
 195     ("\\.voc$" "audio/voc")
 196     ("\\.smp$" "audio/smp")
 197     ("\\.mod$" "audio/mod")
 198     ("\\.dvi$" "image/dvi")
 199     ("\\.mpe?g$" "video/mpeg")
 200     ("\\.au$" "audio/basic")
 201     ("\\.\\(te?xt\\|doc\\|c\\|h\\)$" "text/plain")
 202     ("\\.\\(c\\|h\\)$" "text/source")
 203     ("read.*me" "text/plain")
 204     ("\\.html$" "text/html")
 205     ("\\.bat$" "text/bat")
 206     ("\\.[1-6]$" "text/man")
 207     ("\\.flc$" "video/flc")
 208     ("\\.rle$" "video/rle")
 209     ("\\.pfx$" "video/pfx")
 210     ("\\.avi$" "video/avi")
 211     ("\\.sme$" "video/sme")
 212     ("\\.rpza$" "video/prza")
 213     ("\\.dl$" "video/dl")
 214     ("\\.qt$" "video/qt")
 215     ("\\.rsrc$" "video/rsrc")
 216     ("\\..*$" "unknown/unknown")))
 217
 218 ;; Various variables users may set
 219
 220 (defcustom gnus-uu-tmp-dir temporary-file-directory
 221   "Variable saying where gnus-uu is to do its work.
 222 Default is \"/tmp/\"."
 223   :group 'gnus-extract
 224   :type 'directory)
 225
 226 (defcustom gnus-uu-do-not-unpack-archives nil
 227   "*Non-nil means that gnus-uu won't peek inside archives looking for files to display.
 228 Default is nil."
 229   :group 'gnus-extract-archive
 230   :type 'boolean)
 231
 232 (defcustom gnus-uu-ignore-default-view-rules nil
 233   "*Non-nil means that gnus-uu will ignore the default viewing rules.
 234 Only the user viewing rules will be consulted.  Default is nil."
 235   :group 'gnus-extract-view
 236   :type 'boolean)
 237
 238 (defcustom gnus-uu-grabbed-file-functions nil
 239   "Functions run on each file after successful decoding.
 240 They will be called with the name of the file as the argument.
 241 Likely functions you can use in this list are `gnus-uu-grab-view'
 242 and `gnus-uu-grab-move'."
 243   :group 'gnus-extract
 244   :options '(gnus-uu-grab-view gnus-uu-grab-move)
 245   :type 'hook)
 246
 247 (defcustom gnus-uu-ignore-default-archive-rules nil
 248   "*Non-nil means that gnus-uu will ignore the default archive unpacking commands.
 249 Only the user unpacking commands will be consulted.  Default is nil."
 250   :group 'gnus-extract-archive
 251   :type 'boolean)
 252
 253 (defcustom gnus-uu-kill-carriage-return t
 254   "*Non-nil means that gnus-uu will strip all carriage returns from articles.
 255 Default is t."
 256   :group 'gnus-extract
 257   :type 'boolean)
 258
 259 (defcustom gnus-uu-view-with-metamail nil
 260   "*Non-nil means that files will be viewed with metamail.
 261 The gnus-uu viewing functions will be ignored and gnus-uu will try
 262 to guess at a content-type based on file name suffixes.  Default
 263 it nil."
 264   :group 'gnus-extract
 265   :type 'boolean)
 266
 267 (defcustom gnus-uu-unmark-articles-not-decoded nil
 268   "*Non-nil means that gnus-uu will mark articles that were unsuccessfully decoded as unread.
 269 Default is nil."
 270   :group 'gnus-extract
 271   :type 'boolean)
 272
 273 (defcustom gnus-uu-correct-stripped-uucode nil
 274   "*Non-nil means that gnus-uu will *try* to fix uuencoded files that have had trailing spaces deleted.
 275 Default is nil."
 276   :group 'gnus-extract
 277   :type 'boolean)
 278
 279 (defcustom gnus-uu-save-in-digest nil
 280   "*Non-nil means that gnus-uu, when asked to save without decoding, will save in digests.
 281 If this variable is nil, gnus-uu will just save everything in a
 282 file without any embellishments.  The digesting almost conforms to RFC1153 -
 283 no easy way to specify any meaningful volume and issue numbers were found,
 284 so I simply dropped them."
 285   :group 'gnus-extract
 286   :type 'boolean)
 287
 288 (defcustom gnus-uu-pre-uudecode-hook nil
 289   "Hook run before sending a message to uudecode."
 290   :group 'gnus-extract
 291   :type 'hook)
 292
 293 (defcustom gnus-uu-digest-headers
 294   '("^Date:" "^From:" "^To:" "^Cc:" "^Subject:" "^Message-ID:" "^Keywords:"
 295     "^Summary:" "^References:" "^Content-Type:" "^Content-Transfer-Encoding:"
 296     "^MIME-Version:" "^Content-Disposition:" "^Content-Description:"
 297     "^Content-ID:")
 298   "*List of regexps to match headers included in digested messages.
 299 The headers will be included in the sequence they are matched.  If nil
 300 include all headers."
 301   :group 'gnus-extract
 302   :type '(repeat regexp))
 303
 304 (defcustom gnus-uu-save-separate-articles nil
 305   "*Non-nil means that gnus-uu will save articles in separate files."
 306   :group 'gnus-extract
 307   :type 'boolean)
 308
 309 (defcustom gnus-uu-be-dangerous 'ask
 310   "*Specifies what to do if unusual situations arise during decoding.
 311 If nil, be as conservative as possible.  If t, ignore things that
 312 didn't work, and overwrite existing files.  Otherwise, ask each time."
 313   :group 'gnus-extract
 314   :type '(choice (const :tag "conservative" nil)
 315                  (const :tag "ask" ask)
 316                  (const :tag "liberal" t)))
 317
 318 ;; Internal variables
 319
 320 (defvar gnus-uu-saved-article-name nil)
 321
 322 (defvar gnus-uu-begin-string "^begin[ \t]+0?[0-7][0-7][0-7][ \t]+\\(.*\\)$")
 323 (defvar gnus-uu-end-string "^end[ \t]*$")
 324
 325 (defvar gnus-uu-body-line "^M")
 326 (let ((i 61))
 327   (while (> (setq i (1- i)) 0)
 328     (setq gnus-uu-body-line (concat gnus-uu-body-line "[^a-z]")))
 329   (setq gnus-uu-body-line (concat gnus-uu-body-line ".?$")))
 330
 331 ;"^M.............................................................?$"
 332
 333 (defvar gnus-uu-shar-begin-string "^#! */bin/sh")
 334
 335 (defvar gnus-uu-shar-name-marker
 336   "begin 0?[0-7][0-7][0-7][ \t]+\\(\\(\\w\\|[.\\:]\\)*\\b\\)")
 337
 338 (defvar gnus-uu-postscript-begin-string "^%!PS-")
 339 (defvar gnus-uu-postscript-end-string "^%%EOF$")
 340
 341 (defvar gnus-uu-file-name nil)
 342 (defvar gnus-uu-uudecode-process nil)
 343 (defvar gnus-uu-binhex-article-name nil)
 344 (defvar gnus-uu-yenc-article-name nil)
 345
 346 (defvar gnus-uu-work-dir nil)
 347
 348 (defvar gnus-uu-output-buffer-name " *Gnus UU Output*")
 349
 350 (defvar gnus-uu-default-dir gnus-article-save-directory)
 351 (defvar gnus-uu-digest-from-subject nil)
 352 (defvar gnus-uu-digest-buffer nil)
 353
 354 ;; Commands.
 355
 356 (defun gnus-uu-decode-uu (&optional n)
 357   "Uudecodes the current article."
 358   (interactive "P")
 359   (gnus-uu-decode-with-method 'gnus-uu-uustrip-article n))
 360
 361 (defun gnus-uu-decode-uu-and-save (n dir)
 362   "Decodes and saves the resulting file."
 363   (interactive
 364    (list current-prefix-arg
 365          (file-name-as-directory
 366           (read-directory-name "Uudecode and save in dir: "
 367                           gnus-uu-default-dir
 368                           gnus-uu-default-dir t))))
 369   (gnus-uu-decode-with-method 'gnus-uu-uustrip-article n dir nil nil t))
 370
 371 (defun gnus-uu-decode-unshar (&optional n)
 372   "Unshars the current article."
 373   (interactive "P")
 374   (gnus-uu-decode-with-method 'gnus-uu-unshar-article n nil nil 'scan t))
 375
 376 (defun gnus-uu-decode-unshar-and-save (n dir)
 377   "Unshars and saves the current article."
 378   (interactive
 379    (list current-prefix-arg
 380          (file-name-as-directory
 381           (read-directory-name "Unshar and save in dir: "
 382                           gnus-uu-default-dir
 383                           gnus-uu-default-dir t))))
 384   (gnus-uu-decode-with-method 'gnus-uu-unshar-article n dir nil 'scan t))
 385
 386 (defun gnus-uu-decode-save (n file)
 387   "Saves the current article."
 388   (interactive
 389    (list current-prefix-arg
 390          (if gnus-uu-save-separate-articles
 391              (read-directory-name
 392               "Save articles in dir: " gnus-uu-default-dir gnus-uu-default-dir)
 393            (read-file-name
 394             "Save article in file: " gnus-uu-default-dir gnus-uu-default-dir))))
 395   (setq gnus-uu-saved-article-name file)
 396   (gnus-uu-decode-with-method 'gnus-uu-save-article n nil t))
 397
 398 (defun gnus-uu-decode-binhex (n dir)
 399   "Unbinhexes the current article."
 400   (interactive
 401    (list current-prefix-arg
 402          (file-name-as-directory
 403           (read-directory-name "Unbinhex and save in dir: "
 404                           gnus-uu-default-dir
 405                           gnus-uu-default-dir))))
 406   (gnus-uu-initialize)
 407   (setq gnus-uu-binhex-article-name
 408         (make-temp-file (expand-file-name "binhex" gnus-uu-work-dir)))
 409   (gnus-uu-decode-with-method 'gnus-uu-binhex-article n dir))
 410
 411 (defun gnus-uu-decode-yenc (n dir)
 412   "Decode the yEnc-encoded current article."
 413   (interactive
 414    (list current-prefix-arg
 415          (file-name-as-directory
 416           (read-directory-name "yEnc decode and save in dir: "
 417                           gnus-uu-default-dir
 418                           gnus-uu-default-dir))))
 419   (setq gnus-uu-yenc-article-name nil)
 420   (gnus-uu-decode-with-method 'gnus-uu-yenc-article n dir nil t))
 421
 422 (defun gnus-uu-decode-uu-view (&optional n)
 423   "Uudecodes and views the current article."
 424   (interactive "P")
 425   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 426     (gnus-uu-decode-uu n)))
 427
 428 (defun gnus-uu-decode-uu-and-save-view (n dir)
 429   "Decodes, views and saves the resulting file."
 430   (interactive
 431    (list current-prefix-arg
 432          (read-file-name "Uudecode, view and save in dir: "
 433                          gnus-uu-default-dir
 434                          gnus-uu-default-dir t)))
 435   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 436     (gnus-uu-decode-uu-and-save n dir)))
 437
 438 (defun gnus-uu-decode-unshar-view (&optional n)
 439   "Unshars and views the current article."
 440   (interactive "P")
 441   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 442     (gnus-uu-decode-unshar n)))
 443
 444 (defun gnus-uu-decode-unshar-and-save-view (n dir)
 445   "Unshars and saves the current article."
 446   (interactive
 447    (list current-prefix-arg
 448          (read-file-name "Unshar, view and save in dir: "
 449                          gnus-uu-default-dir
 450                          gnus-uu-default-dir t)))
 451   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 452     (gnus-uu-decode-unshar-and-save n dir)))
 453
 454 (defun gnus-uu-decode-save-view (n file)
 455   "Saves and views the current article."
 456   (interactive
 457    (list current-prefix-arg
 458          (if gnus-uu-save-separate-articles
 459              (read-directory-name "Save articles in dir: "
 460                                   gnus-uu-default-dir gnus-uu-default-dir)
 461            (read-file-name "Save articles in file: "
 462                            gnus-uu-default-dir gnus-uu-default-dir))))
 463   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 464     (gnus-uu-decode-save n file)))
 465
 466 (defun gnus-uu-decode-binhex-view (n file)
 467   "Unbinhexes and views the current article."
 468   (interactive
 469    (list current-prefix-arg
 470          (read-file-name "Unbinhex, view and save in dir: "
 471                          gnus-uu-default-dir gnus-uu-default-dir)))
 472   (gnus-uu-initialize)
 473   (setq gnus-uu-binhex-article-name
 474         (make-temp-file (expand-file-name "binhex" gnus-uu-work-dir)))
 475   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 476     (gnus-uu-decode-binhex n file)))
 477
 478
 479 ;; Digest and forward articles
 480
 481 (defun gnus-uu-digest-mail-forward (&optional n post)
 482   "Digests and forwards all articles in this series."
 483   (interactive "P")
 484   (gnus-uu-initialize)
 485   (let ((gnus-uu-save-in-digest t)
 486         (file (make-temp-file (nnheader-concat gnus-uu-work-dir "forward")))
 487         (message-forward-as-mime message-forward-as-mime)
 488         (mail-parse-charset gnus-newsgroup-charset)
 489         (mail-parse-ignored-charsets gnus-newsgroup-ignored-charsets)
 490         gnus-uu-digest-buffer subject from)
 491     (if (and n (not (numberp n)))
 492         (setq message-forward-as-mime (not message-forward-as-mime)
 493               n nil))
 494     (let ((gnus-article-reply (gnus-summary-work-articles n)))
 495       (when (and (not n)
 496                  (= (length gnus-article-reply) 1))
 497         ;; The case where neither a number of articles nor a region is
 498         ;; specified.
 499         (gnus-summary-top-thread)
 500         (setq gnus-article-reply (nreverse (gnus-uu-find-articles-matching))))
 501       (gnus-setup-message 'forward
 502         (setq gnus-uu-digest-from-subject nil)
 503         (setq gnus-uu-digest-buffer
 504               (gnus-get-buffer-create " *gnus-uu-forward*"))
 505         ;; Specify articles to be forwarded.  Note that they should be
 506         ;; reversed; see `gnus-uu-get-list-of-articles'.
 507         (let ((gnus-newsgroup-processable (reverse gnus-article-reply)))
 508           (gnus-uu-decode-save n file)
 509           (setq gnus-article-reply gnus-newsgroup-processable))
 510         ;; Restore the value of `gnus-newsgroup-processable' to which
 511         ;; it should be set when it is not `let'-bound.
 512         (setq gnus-newsgroup-processable (reverse gnus-article-reply))
 513         (switch-to-buffer gnus-uu-digest-buffer)
 514         (let ((fs gnus-uu-digest-from-subject))
 515           (when fs
 516             (setq from (caar fs)
 517                   subject (gnus-simplify-subject-fuzzy (cdar fs))
 518                   fs (cdr fs))
 519             (while (and fs (or from subject))
 520               (when from
 521                 (unless (string= from (caar fs))
 522                   (setq from nil)))
 523               (when subject
 524                 (unless (string= (gnus-simplify-subject-fuzzy (cdar fs))
 525                                  subject)
 526                   (setq subject nil)))
 527               (setq fs (cdr fs))))
 528           (unless subject
 529             (setq subject "Digested Articles"))
 530           (unless from
 531             (setq from
 532                   (if (gnus-news-group-p gnus-newsgroup-name)
 533                       gnus-newsgroup-name
 534                     "Various"))))
 535         (goto-char (point-min))
 536         (when (re-search-forward "^Subject: ")
 537           (delete-region (point) (point-at-eol))
 538           (insert subject))
 539         (goto-char (point-min))
 540         (when (re-search-forward "^From:")
 541           (delete-region (point) (point-at-eol))
 542           (insert " " from))
 543         (let ((message-forward-decoded-p t))
 544           (message-forward post t))))
 545     (setq gnus-uu-digest-from-subject nil)))
 546
 547 (defun gnus-uu-digest-post-forward (&optional n)
 548   "Digest and forward to a newsgroup."
 549   (interactive "P")
 550   (gnus-uu-digest-mail-forward n t))
 551
 552 ;; Process marking.
 553
 554 (defun gnus-message-process-mark (unmarkp new-marked)
 555   (let ((old (- (length gnus-newsgroup-processable) (length new-marked))))
 556     (gnus-message 6 "%d mark%s %s%s"
 557                   (length new-marked)
 558                   (if (= (length new-marked) 1) "" "s")
 559                   (if unmarkp "removed" "added")
 560                   (cond
 561                    ((and (zerop old)
 562                          (not unmarkp))
 563                     "")
 564                    (unmarkp
 565                     (format ", %d remain marked"
 566                             (length gnus-newsgroup-processable)))
 567                    (t
 568                     (format ", %d already marked" old))))))
 569
 570 (defun gnus-new-processable (unmarkp articles)
 571   (if unmarkp
 572       (gnus-intersection gnus-newsgroup-processable articles)
 573     (gnus-set-difference articles gnus-newsgroup-processable)))
 574
 575 (defun gnus-uu-mark-by-regexp (regexp &optional unmark)
 576   "Set the process mark on articles whose subjects match REGEXP.
 577 When called interactively, prompt for REGEXP.
 578 Optional UNMARK non-nil means unmark instead of mark."
 579   (interactive "sMark (regexp): \nP")
 580   (save-excursion
 581     (let* ((articles (gnus-uu-find-articles-matching regexp))
 582            (new-marked (gnus-new-processable unmark articles)))
 583       (while articles
 584         (if unmark
 585             (gnus-summary-remove-process-mark (pop articles))
 586           (gnus-summary-set-process-mark (pop articles))))
 587       (gnus-message-process-mark unmark new-marked)))
 588   (gnus-summary-position-point))
 589
 590 (defun gnus-uu-unmark-by-regexp (regexp)
 591   "Remove the process mark from articles whose subjects match REGEXP.
 592 When called interactively, prompt for REGEXP."
 593   (interactive "sUnmark (regexp): ")
 594   (gnus-uu-mark-by-regexp regexp t))
 595
 596 (defun gnus-uu-mark-series (&optional silent)
 597   "Mark the current series with the process mark."
 598   (interactive)
 599   (let* ((articles (gnus-uu-find-articles-matching))
 600          (l (length articles)))
 601     (while articles
 602       (gnus-summary-set-process-mark (car articles))
 603       (setq articles (cdr articles)))
 604     (unless silent
 605       (gnus-message 6 "Marked %d articles" l))
 606     (gnus-summary-position-point)
 607     l))
 608
 609 (defun gnus-uu-mark-region (beg end &optional unmark)
 610   "Set the process mark on all articles between point and mark."
 611   (interactive "r")
 612   (save-excursion
 613     (goto-char beg)
 614     (while (< (point) end)
 615       (if unmark
 616           (gnus-summary-remove-process-mark (gnus-summary-article-number))
 617         (gnus-summary-set-process-mark (gnus-summary-article-number)))
 618       (forward-line 1)))
 619   (gnus-summary-position-point))
 620
 621 (defun gnus-uu-unmark-region (beg end)
 622   "Remove the process mark from all articles between point and mark."
 623   (interactive "r")
 624   (gnus-uu-mark-region beg end t))
 625
 626 (defun gnus-uu-mark-buffer ()
 627   "Set the process mark on all articles in the buffer."
 628   (interactive)
 629   (gnus-uu-mark-region (point-min) (point-max)))
 630
 631 (defun gnus-uu-unmark-buffer ()
 632   "Remove the process mark on all articles in the buffer."
 633   (interactive)
 634   (gnus-uu-mark-region (point-min) (point-max) t))
 635
 636 (defun gnus-uu-mark-thread ()
 637   "Marks all articles downwards in this thread."
 638   (interactive)
 639   (gnus-save-hidden-threads
 640     (let ((level (gnus-summary-thread-level)))
 641       (while (and (gnus-summary-set-process-mark (gnus-summary-article-number))
 642                   (zerop (forward-line 1))
 643                   (not (eobp))
 644                   (> (gnus-summary-thread-level) level)))))
 645   (gnus-summary-position-point))
 646
 647 (defun gnus-uu-unmark-thread ()
 648   "Unmarks all articles downwards in this thread."
 649   (interactive)
 650   (let ((level (gnus-summary-thread-level)))
 651     (while (and (gnus-summary-remove-process-mark
 652                  (gnus-summary-article-number))
 653                 (zerop (forward-line 1))
 654                 (> (gnus-summary-thread-level) level))))
 655   (gnus-summary-position-point))
 656
 657 (defun gnus-uu-invert-processable ()
 658   "Invert the list of process-marked articles."
 659   (interactive)
 660   (let ((data gnus-newsgroup-data)
 661         number)
 662     (save-excursion
 663       (while data
 664         (if (memq (setq number (gnus-data-number (pop data)))
 665                   gnus-newsgroup-processable)
 666             (gnus-summary-remove-process-mark number)
 667           (gnus-summary-set-process-mark number)))))
 668   (gnus-summary-position-point))
 669
 670 (defun gnus-uu-mark-over (&optional score)
 671   "Mark all articles with a score over SCORE (the prefix)."
 672   (interactive "P")
 673   (let ((score (or score gnus-summary-default-score 0))
 674         (data gnus-newsgroup-data))
 675     (save-excursion
 676       (while data
 677         (when (> (or (cdr (assq (gnus-data-number (car data))
 678                                 gnus-newsgroup-scored))
 679                      gnus-summary-default-score 0)
 680                  score)
 681           (gnus-summary-set-process-mark (caar data)))
 682         (setq data (cdr data))))
 683     (gnus-summary-position-point)))
 684
 685 (defun gnus-uu-mark-sparse ()
 686   "Mark all series that have some articles marked."
 687   (interactive)
 688   (let ((marked (nreverse gnus-newsgroup-processable))
 689         subject articles total headers)
 690     (unless marked
 691       (error "No articles marked with the process mark"))
 692     (setq gnus-newsgroup-processable nil)
 693     (save-excursion
 694       (while marked
 695         (and (vectorp (setq headers
 696                             (gnus-summary-article-header (car marked))))
 697              (setq subject (mail-header-subject headers)
 698                    articles (gnus-uu-find-articles-matching
 699                              (gnus-uu-reginize-string subject))
 700                    total (nconc total articles)))
 701         (while articles
 702           (gnus-summary-set-process-mark (car articles))
 703           (setcdr marked (delq (car articles) (cdr marked)))
 704           (setq articles (cdr articles)))
 705         (setq marked (cdr marked)))
 706       (setq gnus-newsgroup-processable (nreverse total)))
 707     (gnus-summary-position-point)))
 708
 709 (defun gnus-uu-mark-all ()
 710   "Mark all articles in \"series\" order."
 711   (interactive)
 712   (setq gnus-newsgroup-processable nil)
 713   (save-excursion
 714     (let ((data gnus-newsgroup-data)
 715           (count 0)
 716           number)
 717       (while data
 718         (when (and (not (memq (setq number (gnus-data-number (car data)))
 719                               gnus-newsgroup-processable))
 720                    (vectorp (gnus-data-header (car data))))
 721           (gnus-summary-goto-subject number)
 722           (setq count (+ count (gnus-uu-mark-series t))))
 723         (setq data (cdr data)))
 724       (gnus-message 6 "Marked %d articles" count)))
 725   (gnus-summary-position-point))
 726
 727 ;; All PostScript functions written by Erik Selberg <speed@cs.washington.edu>.
 728
 729 (defun gnus-uu-decode-postscript (&optional n)
 730   "Gets PostScript of the current article."
 731   (interactive "P")
 732   (gnus-uu-decode-with-method 'gnus-uu-decode-postscript-article n))
 733
 734 (defun gnus-uu-decode-postscript-view (&optional n)
 735   "Gets and views the current article."
 736   (interactive "P")
 737   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 738     (gnus-uu-decode-postscript n)))
 739
 740 (defun gnus-uu-decode-postscript-and-save (n dir)
 741   "Extracts PostScript and saves the current article."
 742   (interactive
 743    (list current-prefix-arg
 744          (file-name-as-directory
 745           (read-directory-name "Save in dir: "
 746                           gnus-uu-default-dir
 747                           gnus-uu-default-dir t))))
 748   (gnus-uu-decode-with-method 'gnus-uu-decode-postscript-article
 749                               n dir nil nil t))
 750
 751 (defun gnus-uu-decode-postscript-and-save-view (n dir)
 752   "Decodes, views and saves the resulting file."
 753   (interactive
 754    (list current-prefix-arg
 755          (read-file-name "Where do you want to save the file(s)? "
 756                          gnus-uu-default-dir
 757                          gnus-uu-default-dir t)))
 758   (let ((gnus-view-pseudos (or gnus-view-pseudos 'automatic)))
 759     (gnus-uu-decode-postscript-and-save n dir)))
 760
 761
 762 ;; Internal functions.
 763
 764 (defun gnus-uu-decode-with-method (method n &optional save not-insert
 765                                           scan cdir)
 766   (gnus-uu-initialize scan)
 767   (when save
 768     (setq gnus-uu-default-dir save))
 769   ;; Create the directory we save to.
 770   (when (and scan cdir save
 771              (not (file-exists-p save)))
 772     (make-directory save t))
 773   (let ((articles (gnus-uu-get-list-of-articles n))
 774         files)
 775     (setq files (gnus-uu-grab-articles articles method t))
 776     (let ((gnus-current-article (car articles)))
 777       (when scan
 778         (setq files (gnus-uu-scan-directory gnus-uu-work-dir))))
 779     (when save
 780       (gnus-uu-save-files files save))
 781     (when (eq gnus-uu-do-not-unpack-archives nil)
 782       (setq files (gnus-uu-unpack-files files)))
 783     (setq files (nreverse (gnus-uu-get-actions files)))
 784     (or not-insert (not gnus-insert-pseudo-articles)
 785         (gnus-summary-insert-pseudos files save))))
 786
 787 (defun gnus-uu-scan-directory (dir &optional rec)
 788   "Return a list of all files under DIR."
 789   (let ((files (directory-files dir t))
 790         out file)
 791     (while (setq file (pop files))
 792       (unless (member (file-name-nondirectory file) '("." ".."))
 793         (push (list (cons 'name file)
 794                     (cons 'article gnus-current-article))
 795               out)
 796         (when (file-directory-p file)
 797           (setq out (nconc (gnus-uu-scan-directory file t) out)))))
 798     (if rec
 799         out
 800       (nreverse out))))
 801
 802 (defun gnus-uu-save-files (files dir)
 803   "Save FILES in DIR."
 804   (let ((len (length files))
 805         (reg (concat "^" (regexp-quote gnus-uu-work-dir)))
 806         to-file file fromdir)
 807     (while (setq file (cdr (assq 'name (pop files))))
 808       (when (file-exists-p file)
 809         (string-match reg file)
 810         (setq fromdir (substring file (match-end 0)))
 811         (if (file-directory-p file)
 812             (gnus-make-directory (concat dir fromdir))
 813           (setq to-file (concat dir fromdir))
 814           (when (or (not (file-exists-p to-file))
 815                     (eq gnus-uu-be-dangerous t)
 816                     (and gnus-uu-be-dangerous
 817                          (gnus-y-or-n-p (format "%s exists; overwrite? "
 818                                                 to-file))))
 819             (copy-file file to-file t t)))))
 820     (gnus-message 5 "Saved %d file%s" len (if (= len 1) "" "s"))))
 821
 822 ;; Functions for saving and possibly digesting articles without
 823 ;; any decoding.
 824
 825 ;; Function called by gnus-uu-grab-articles to treat each article.
 826 (defun gnus-uu-save-article (buffer in-state)
 827   (cond
 828    (gnus-uu-save-separate-articles
 829     (with-current-buffer buffer
 830       (let ((coding-system-for-write mm-text-coding-system))
 831         (gnus-write-buffer
 832          (concat gnus-uu-saved-article-name gnus-current-article)))
 833       (cond ((eq in-state 'first) (list gnus-uu-saved-article-name 'begin))
 834             ((eq in-state 'first-and-last) (list gnus-uu-saved-article-name
 835                                                  'begin 'end))
 836             ((eq in-state 'last) (list 'end))
 837             (t (list 'middle)))))
 838    ((not gnus-uu-save-in-digest)
 839     (with-current-buffer buffer
 840       (write-region (point-min) (point-max) gnus-uu-saved-article-name t)
 841       (cond ((eq in-state 'first) (list gnus-uu-saved-article-name 'begin))
 842             ((eq in-state 'first-and-last) (list gnus-uu-saved-article-name
 843                                                  'begin 'end))
 844             ((eq in-state 'last) (list 'end))
 845             (t (list 'middle)))))
 846    (t
 847     (let ((header (gnus-summary-article-header)))
 848       (push (cons (mail-header-from header)
 849                   (mail-header-subject header))
 850             gnus-uu-digest-from-subject))
 851     (let ((name (file-name-nondirectory gnus-uu-saved-article-name))
 852           beg subj headers headline sorthead body end-string state)
 853       (if (or (eq in-state 'first)
 854               (eq in-state 'first-and-last))
 855           (progn
 856             (setq state (list 'begin))
 857             (with-current-buffer (gnus-get-buffer-create "*gnus-uu-body*")
 858               (erase-buffer))
 859             (with-current-buffer (gnus-get-buffer-create "*gnus-uu-pre*")
 860               (erase-buffer)
 861               (insert (format
 862                        "Date: %s\nFrom: %s\nSubject: %s Digest\n\n"
 863                        (message-make-date) name name))
 864               (when (and message-forward-as-mime gnus-uu-digest-buffer)
 865                 (insert
 866                  "<#mml type=message/rfc822>\nSubject: Topics\n\n<#/mml>\n")
 867                 (forward-line -1))
 868               (insert "Topics:\n")))
 869         (when (not (eq in-state 'end))
 870           (setq state (list 'middle))))
 871       (with-current-buffer "*gnus-uu-body*"
 872         (goto-char (setq beg (point-max)))
 873         (with-current-buffer buffer
 874           (save-restriction
 875             (let ((inhibit-read-only t))
 876               (set-text-properties (point-min) (point-max) nil))
 877             (when (and message-forward-as-mime
 878                        message-forward-show-mml
 879                        gnus-uu-digest-buffer)
 880               (mm-enable-multibyte)
 881               (mime-to-mml))
 882             (goto-char (point-min))
 883             (search-forward "\n\n")
 884             (unless (and message-forward-as-mime gnus-uu-digest-buffer)
 885               ;; Quote all 30-dash lines.
 886               (save-excursion
 887                 (while (re-search-forward "^-" nil t)
 888                   (beginning-of-line)
 889                   (delete-char 1)
 890                   (insert "- "))))
 891             (setq body (buffer-substring (1- (point)) (point-max)))
 892             (narrow-to-region (point-min) (point))
 893             (if (not (setq headers gnus-uu-digest-headers))
 894                 (setq sorthead (buffer-string))
 895               (while headers
 896                 (setq headline (car headers))
 897                 (setq headers (cdr headers))
 898                 (goto-char (point-min))
 899                 (while (re-search-forward headline nil t)
 900                   (setq sorthead
 901                         (concat sorthead
 902                                 (buffer-substring
 903                                  (match-beginning 0)
 904                                  (or (and (re-search-forward "^[^ \t]" nil t)
 905                                           (1- (point)))
 906                                      (progn (forward-line 1) (point)))))))))))
 907         (if (and message-forward-as-mime gnus-uu-digest-buffer)
 908           (if message-forward-show-mml
 909               (progn
 910                 (insert "\n<#mml type=message/rfc822>\n")
 911                 (insert sorthead) (goto-char (point-max))
 912                 (insert body) (goto-char (point-max))
 913                 (insert "\n<#/mml>\n"))
 914             (let ((buf (mml-generate-new-buffer " *mml*")))
 915               (with-current-buffer buf
 916                 (insert sorthead)
 917                 (goto-char (point-min))
 918                 (when (re-search-forward "^Subject: \\(.*\\)$" nil t)
 919                   (setq subj (buffer-substring (match-beginning 1)
 920                                                (match-end 1))))
 921                 (goto-char (point-max))
 922                 (insert body))
 923               (insert "\n<#part type=message/rfc822"
 924                       " buffer=\"" (buffer-name buf) "\">\n")))
 925           (insert sorthead) (goto-char (point-max))
 926           (insert body) (goto-char (point-max))
 927           (insert (concat "\n" (make-string 30 ?-) "\n\n")))
 928         (goto-char beg)
 929         (when (re-search-forward "^Subject: \\(.*\\)$" nil t)
 930           (setq subj (buffer-substring (match-beginning 1) (match-end 1))))
 931         (when subj
 932           (with-current-buffer "*gnus-uu-pre*"
 933             (insert (format "   %s\n" subj)))))
 934       (when (or (eq in-state 'last)
 935                 (eq in-state 'first-and-last))
 936         (if (and message-forward-as-mime gnus-uu-digest-buffer)
 937             (with-current-buffer gnus-uu-digest-buffer
 938               (erase-buffer)
 939               (insert-buffer-substring "*gnus-uu-pre*")
 940               (goto-char (point-max))
 941               (insert-buffer-substring "*gnus-uu-body*"))
 942           (with-current-buffer "*gnus-uu-pre*"
 943             (insert (format "\n\n%s\n\n" (make-string 70 ?-)))
 944             (if gnus-uu-digest-buffer
 945                 (with-current-buffer gnus-uu-digest-buffer
 946                   (erase-buffer)
 947                   (insert-buffer-substring "*gnus-uu-pre*"))
 948               (let ((coding-system-for-write mm-text-coding-system))
 949                 (gnus-write-buffer gnus-uu-saved-article-name))))
 950           (with-current-buffer "*gnus-uu-body*"
 951             (goto-char (point-max))
 952             (insert
 953              (concat (setq end-string (format "End of %s Digest" name))
 954                      "\n"))
 955             (insert (concat (make-string (length end-string) ?*) "\n"))
 956             (if gnus-uu-digest-buffer
 957                 (with-current-buffer gnus-uu-digest-buffer
 958                   (goto-char (point-max))
 959                   (insert-buffer-substring "*gnus-uu-body*"))
 960               (let ((coding-system-for-write mm-text-coding-system)
 961                     (file-name-coding-system nnmail-pathname-coding-system))
 962                 (write-region
 963                  (point-min) (point-max) gnus-uu-saved-article-name t)))))
 964         (gnus-kill-buffer "*gnus-uu-pre*")
 965         (gnus-kill-buffer "*gnus-uu-body*")
 966         (push 'end state))
 967       (if (memq 'begin state)
 968           (cons gnus-uu-saved-article-name state)
 969         state)))))
 970
 971 ;; Binhex treatment - not very advanced.
 972
 973 (defvar gnus-uu-binhex-body-line
 974   "^[^:]...............................................................$")
 975 (defvar gnus-uu-binhex-begin-line
 976   "^:...............................................................$")
 977 (defvar gnus-uu-binhex-end-line
 978   ":$")
 979
 980 (defun gnus-uu-binhex-article (buffer in-state)
 981   (let (state start-char)
 982     (with-current-buffer buffer
 983       (widen)
 984       (goto-char (point-min))
 985       (when (not (re-search-forward gnus-uu-binhex-begin-line nil t))
 986         (when (not (re-search-forward gnus-uu-binhex-body-line nil t))
 987           (setq state (list 'wrong-type))))
 988
 989       (if (memq 'wrong-type state)
 990           ()
 991         (beginning-of-line)
 992         (setq start-char (point))
 993         (if (looking-at gnus-uu-binhex-begin-line)
 994             (progn
 995               (setq state (list 'begin))
 996               (write-region (point-min) (point-min)
 997                             gnus-uu-binhex-article-name))
 998           (setq state (list 'middle)))
 999         (goto-char (point-max))
1000         (re-search-backward (concat gnus-uu-binhex-body-line "\\|"
1001                                     gnus-uu-binhex-end-line)
1002                             nil t)
1003         (when (looking-at gnus-uu-binhex-end-line)
1004           (setq state (if (memq 'begin state)
1005                           (cons 'end state)
1006                         (list 'end))))
1007         (beginning-of-line)
1008         (forward-line 1)
1009         (when (file-exists-p gnus-uu-binhex-article-name)
1010           (mm-append-to-file start-char (point) gnus-uu-binhex-article-name))))
1011     (if (memq 'begin state)
1012         (cons gnus-uu-binhex-article-name state)
1013       state)))
1014
1015 ;; yEnc
1016
1017 (defun gnus-uu-yenc-article (buffer in-state)
1018   (with-current-buffer gnus-original-article-buffer
1019     (widen)
1020     (let ((file-name (yenc-extract-filename))
1021           state start-char)
1022       (when (not file-name)
1023         (setq state (list 'wrong-type)))
1024
1025       (if (memq 'wrong-type state)
1026           ()
1027         (when (yenc-first-part-p)
1028           (setq gnus-uu-yenc-article-name
1029                 (expand-file-name file-name gnus-uu-work-dir))
1030           (push 'begin state))
1031         (when (yenc-last-part-p)
1032           (push 'end state))
1033         (unless state
1034           (push 'middle state))
1035         (mm-with-unibyte-buffer
1036           (insert-buffer-substring gnus-original-article-buffer)
1037           (yenc-decode-region (point-min) (point-max))
1038           (when (and (member 'begin state)
1039                      (file-exists-p gnus-uu-yenc-article-name))
1040             (delete-file gnus-uu-yenc-article-name))
1041           (mm-append-to-file (point-min) (point-max)
1042                              gnus-uu-yenc-article-name)))
1043       (if (memq 'begin state)
1044           (cons file-name state)
1045         state))))
1046
1047 ;; PostScript
1048
1049 (defun gnus-uu-decode-postscript-article (process-buffer in-state)
1050   (let ((state (list 'ok))
1051         start-char end-char file-name)
1052     (with-current-buffer process-buffer
1053       (goto-char (point-min))
1054       (if (not (re-search-forward gnus-uu-postscript-begin-string nil t))
1055           (setq state (list 'wrong-type))
1056         (beginning-of-line)
1057         (setq start-char (point))
1058         (if (not (re-search-forward gnus-uu-postscript-end-string nil t))
1059             (setq state (list 'wrong-type))
1060           (setq end-char (point))
1061           (set-buffer (gnus-get-buffer-create gnus-uu-output-buffer-name))
1062           (insert-buffer-substring process-buffer start-char end-char)
1063           (setq file-name (concat gnus-uu-work-dir
1064                                   (cdr gnus-article-current) ".ps"))
1065           (write-region (point-min) (point-max) file-name)
1066           (setq state (list file-name 'begin 'end)))))
1067     state))
1068
1069
1070 ;; Find actions.
1071
1072 (defun gnus-uu-get-actions (files)
1073   (let ((ofiles files)
1074         action name)
1075     (while files
1076       (setq name (cdr (assq 'name (car files))))
1077       (and
1078        (setq action (gnus-uu-get-action name))
1079        (setcar files (nconc (list (if (string= action "gnus-uu-archive")
1080                                       (cons 'action "file")
1081                                     (cons 'action action))
1082                                   (cons 'execute (gnus-uu-command
1083                                                   action name)))
1084                             (car files))))
1085       (setq files (cdr files)))
1086     ofiles))
1087
1088 (defun gnus-uu-get-action (file-name)
1089   (let (action)
1090     (setq action
1091           (gnus-uu-choose-action
1092            file-name
1093            (append
1094             gnus-uu-user-view-rules
1095             (if gnus-uu-ignore-default-view-rules
1096                 nil
1097               gnus-uu-default-view-rules)
1098             gnus-uu-user-view-rules-end)))
1099     (when (and (not (string= (or action "") "gnus-uu-archive"))
1100                gnus-uu-view-with-metamail)
1101       (when (setq action
1102                   (gnus-uu-choose-action file-name gnus-uu-ext-to-mime-list))
1103         (setq action (format "metamail -d -b -c \"%s\"" action))))
1104     action))
1105
1106
1107 ;; Functions for treating subjects and collecting series.
1108
1109 (defun gnus-uu-reginize-string (string)
1110   ;; Takes a string and puts a \ in front of every special character;
1111   ;; replaces the last thing that looks like "2/3" with "[0-9]+/3"
1112   ;; or, if it can't find something like that, tries "2 of 3", then
1113   ;; finally just replaces the next to last number with "[0-9]+".
1114   (with-current-buffer (gnus-get-buffer-create gnus-uu-output-buffer-name)
1115     (buffer-disable-undo)
1116     (erase-buffer)
1117     (insert (regexp-quote string))
1118
1119     (setq case-fold-search nil)
1120
1121     (end-of-line)
1122     (if (re-search-backward "\\([^0-9]\\)[0-9]+/\\([0-9]+\\)" nil t)
1123         (replace-match "\\1[0-9]+/\\2")
1124
1125       (end-of-line)
1126       (if (re-search-backward "\\([^0-9]\\)[0-9]+[ \t]*of[ \t]*\\([0-9]+\\)"
1127                               nil t)
1128           (replace-match "\\1[0-9]+ of \\2")
1129
1130         (end-of-line)
1131         (if (re-search-backward "\\([^0-9]\\)[0-9]+\\([^0-9]+\\)[0-9]+"
1132                                 nil t)
1133             (replace-match "\\1[0-9]+\\2[0-9]+" t nil nil nil))))
1134
1135     (goto-char (point-min))
1136     (while (re-search-forward "[ \t]+" nil t)
1137       (replace-match "[ \t]+" t t))
1138
1139     (buffer-string)))
1140
1141 (defun gnus-uu-get-list-of-articles (n)
1142   ;; If N is non-nil, the article numbers of the N next articles
1143   ;; will be returned.
1144   ;; If any articles have been marked as processable, they will be
1145   ;; returned.
1146   ;; Failing that, articles that have subjects that are part of the
1147   ;; same "series" as the current will be returned.
1148   (let (articles)
1149     (cond
1150      (n
1151       (setq n (prefix-numeric-value n))
1152       (let ((backward (< n 0))
1153             (n (abs n)))
1154         (save-excursion
1155           (while (and (> n 0)
1156                       (push (gnus-summary-article-number)
1157                             articles)
1158                       (gnus-summary-search-forward nil nil backward))
1159             (setq n (1- n))))
1160         (nreverse articles)))
1161      (gnus-newsgroup-processable
1162       (reverse gnus-newsgroup-processable))
1163      (t
1164       (gnus-uu-find-articles-matching)))))
1165
1166 (defun gnus-uu-string< (l1 l2)
1167   (string< (car l1) (car l2)))
1168
1169 (defun gnus-uu-find-articles-matching
1170   (&optional subject only-unread do-not-translate)
1171   ;; Finds all articles that matches the regexp SUBJECT.  If it is
1172   ;; nil, the current article name will be used.  If ONLY-UNREAD is
1173   ;; non-nil, only unread articles are chosen.  If DO-NOT-TRANSLATE is
1174   ;; non-nil, article names are not equalized before sorting.
1175   (let ((subject (or subject
1176                      (gnus-uu-reginize-string (gnus-summary-article-subject))))
1177         list-of-subjects)
1178     (save-excursion
1179       (when subject
1180         ;; Collect all subjects matching subject.
1181         (let ((case-fold-search t)
1182               (data gnus-newsgroup-data)
1183               subj mark d)
1184           (while data
1185             (setq d (pop data))
1186             (and (not (gnus-data-pseudo-p d))
1187                  (or (not only-unread)
1188                      (= (setq mark (gnus-data-mark d))
1189                         gnus-unread-mark)
1190                      (= mark gnus-ticked-mark)
1191                      (= mark gnus-dormant-mark))
1192                  (setq subj (mail-header-subject (gnus-data-header d)))
1193                  (string-match subject subj)
1194                  (push (cons subj (gnus-data-number d))
1195                        list-of-subjects))))
1196
1197         ;; Expand numbers, sort, and return the list of article
1198         ;; numbers.
1199         (mapcar 'cdr
1200                 (sort (gnus-uu-expand-numbers
1201                        list-of-subjects
1202                        (not do-not-translate))
1203                       'gnus-uu-string<))))))
1204
1205 (defun gnus-uu-expand-numbers (string-list &optional translate)
1206   ;; Takes a list of strings and "expands" all numbers in all the
1207   ;; strings.  That is, this function makes all numbers equal length by
1208   ;; prepending lots of zeroes before each number.  This is to ease later
1209   ;; sorting to find out what sequence the articles are supposed to be
1210   ;; decoded in.  Returns the list of expanded strings.
1211   (let ((out-list string-list)
1212         string)
1213     (with-current-buffer (gnus-get-buffer-create gnus-uu-output-buffer-name)
1214       (buffer-disable-undo)
1215       (while string-list
1216         (erase-buffer)
1217         (insert (caar string-list))
1218         ;; Translate multiple spaces to one space.
1219         (goto-char (point-min))
1220         (while (re-search-forward "[ \t]+" nil t)
1221           (replace-match " "))
1222         ;; Translate all characters to "a".
1223         (goto-char (point-min))
1224         (when translate
1225           (while (re-search-forward "[A-Za-z]" nil t)
1226             (replace-match "a" t t)))
1227         ;; Expand numbers.
1228         (goto-char (point-min))
1229         (while (re-search-forward "[0-9]+" nil t)
1230           (ignore-errors
1231             (replace-match
1232              (format "%06d"
1233                      (string-to-number (buffer-substring
1234                                      (match-beginning 0) (match-end 0)))))))
1235         (setq string (buffer-substring (point-min) (point-max)))
1236         (setcar (car string-list) string)
1237         (setq string-list (cdr string-list))))
1238     out-list))
1239
1240
1241 ;; `gnus-uu-grab-articles' is the general multi-article treatment
1242 ;; function.  It takes a list of articles to be grabbed and a function
1243 ;; to apply to each article.
1244 ;;
1245 ;; The function to be called should take two parameters.  The first
1246 ;; parameter is the article buffer.  The function should leave the
1247 ;; result, if any, in this buffer.  Most treatment functions will just
1248 ;; generate files...
1249 ;;
1250 ;; The second parameter is the state of the list of articles, and can
1251 ;; have four values: `first', `middle', `last' and `first-and-last'.
1252 ;;
1253 ;; The function should return a list.  The list may contain the
1254 ;; following symbols:
1255 ;; `error' if an error occurred
1256 ;; `begin' if the beginning of an encoded file has been received
1257 ;;   If the list returned contains a `begin', the first element of
1258 ;;   the list *must* be a string with the file name of the decoded
1259 ;;   file.
1260 ;; `end' if the end of an encoded file has been received
1261 ;; `middle' if the article was a body part of an encoded file
1262 ;; `wrong-type' if the article was not a part of an encoded file
1263 ;; `ok', which can be used everything is ok
1264
1265 (defvar gnus-uu-has-been-grabbed nil)
1266
1267 (defun gnus-uu-unmark-list-of-grabbed (&optional dont-unmark-last-article)
1268   (let (art)
1269     (if (not (and gnus-uu-has-been-grabbed
1270                   gnus-uu-unmark-articles-not-decoded))
1271         ()
1272       (when dont-unmark-last-article
1273         (setq art (car gnus-uu-has-been-grabbed))
1274         (setq gnus-uu-has-been-grabbed (cdr gnus-uu-has-been-grabbed)))
1275       (while gnus-uu-has-been-grabbed
1276         (gnus-summary-tick-article (car gnus-uu-has-been-grabbed) t)
1277         (setq gnus-uu-has-been-grabbed (cdr gnus-uu-has-been-grabbed)))
1278       (when dont-unmark-last-article
1279         (setq gnus-uu-has-been-grabbed (list art))))))
1280
1281 ;; This function takes a list of articles and a function to apply to
1282 ;; each article grabbed.
1283 ;;
1284 ;; This function returns a list of files decoded if the grabbing and
1285 ;; the process-function has been successful and nil otherwise.
1286 (defun gnus-uu-grab-articles (articles process-function
1287                                        &optional sloppy limit no-errors)
1288   (require 'gnus-async)
1289   (let ((state 'first)
1290         (gnus-asynchronous nil)
1291         (gnus-inhibit-treatment t)
1292         has-been-begin article result-file result-files process-state
1293         gnus-summary-display-article-function
1294         gnus-article-prepare-hook gnus-display-mime-function
1295         article-series files)
1296
1297     (while (and articles
1298                 (not (memq 'error process-state))
1299                 (or sloppy
1300                     (not (memq 'end process-state))))
1301
1302       (setq article (pop articles))
1303       (when (vectorp (gnus-summary-article-header article))
1304         (push article article-series)
1305
1306         (unless articles
1307           (if (eq state 'first)
1308               (setq state 'first-and-last)
1309             (setq state 'last)))
1310
1311         (let ((part (gnus-uu-part-number article)))
1312           (gnus-message 6 "Getting article %d%s..."
1313                         article (if (string= part "") "" (concat ", " part))))
1314         (gnus-summary-display-article article)
1315
1316         ;; Push the article to the processing function.
1317         (with-current-buffer gnus-original-article-buffer
1318           (let ((buffer-read-only nil))
1319             (with-current-buffer gnus-summary-buffer
1320               (setq process-state
1321                     (funcall process-function
1322                              gnus-original-article-buffer state)))))
1323
1324         (gnus-summary-remove-process-mark article)
1325
1326         ;; If this is the beginning of a decoded file, we push it
1327         ;; on to a list.
1328         (when (or (memq 'begin process-state)
1329                   (and (or (eq state 'first)
1330                            (eq state 'first-and-last))
1331                        (memq 'ok process-state)))
1332           (when has-been-begin
1333             ;; If there is a `result-file' here, that means that the
1334             ;; file was unsuccessfully decoded, so we delete it.
1335             (when (and result-file
1336                        (file-exists-p result-file)
1337                        (not gnus-uu-be-dangerous)
1338                        (or (eq gnus-uu-be-dangerous t)
1339                            (gnus-y-or-n-p
1340                             (format "Delete unsuccessfully decoded file %s? "
1341                                     result-file))))
1342               (delete-file result-file)))
1343           (when (memq 'begin process-state)
1344             (setq result-file (car process-state)))
1345           (setq has-been-begin t))
1346
1347         ;; Check whether we have decoded one complete file.
1348         (when (memq 'end process-state)
1349           (setq article-series nil)
1350           (setq has-been-begin nil)
1351           (if (stringp result-file)
1352               (setq files (list result-file))
1353             (setq files result-file))
1354           (setq result-file (car files))
1355           (while files
1356             (push (list (cons 'name (pop files))
1357                         (cons 'article article))
1358                   result-files))
1359           ;; Allow user-defined functions to be run on this file.
1360           (when gnus-uu-grabbed-file-functions
1361             (let ((funcs gnus-uu-grabbed-file-functions))
1362               (unless (listp funcs)
1363                 (setq funcs (list funcs)))
1364               (while funcs
1365                 (funcall (pop funcs) result-file))))
1366           (setq result-file nil)
1367           ;; Check whether we have decoded enough articles.
1368           (and limit (= (length result-files) limit)
1369                (setq articles nil)))
1370
1371         ;; If this is the last article to be decoded, and
1372         ;; we still haven't reached the end, then we delete
1373         ;; the partially decoded file.
1374         (and (or (eq state 'last) (eq state 'first-and-last))
1375              (not (memq 'end process-state))
1376              result-file
1377              (file-exists-p result-file)
1378              (not gnus-uu-be-dangerous)
1379              (or (eq gnus-uu-be-dangerous t)
1380                  (gnus-y-or-n-p
1381                   (format "Delete incomplete file %s? " result-file)))
1382              (delete-file result-file))
1383
1384         ;; If this was a file of the wrong sort, then
1385         (when (and (or (memq 'wrong-type process-state)
1386                        (memq 'error process-state))
1387                    gnus-uu-unmark-articles-not-decoded)
1388           (gnus-summary-tick-article article t))
1389
1390         ;; Set the new series state.
1391         (if (and (not has-been-begin)
1392                  (not sloppy)
1393                  (or (memq 'end process-state)
1394                      (memq 'middle process-state)))
1395             (progn
1396               (setq process-state (list 'error))
1397               (gnus-message 2 "No begin part at the beginning")
1398               (sleep-for 2))
1399           (setq state 'middle))))
1400
1401       ;; When there are no result-files, then something must be wrong.
1402     (if result-files
1403         (message "")
1404       (cond
1405        ((not has-been-begin)
1406         (gnus-message 2 "Wrong type file"))
1407        ((memq 'error process-state)
1408         (gnus-message 2 "An error occurred during decoding"))
1409        ((not (or (memq 'ok process-state)
1410                  (memq 'end process-state)))
1411         (gnus-message 2 "End of articles reached before end of file")))
1412       ;; Make unsuccessfully decoded articles unread.
1413       (when gnus-uu-unmark-articles-not-decoded
1414         (while article-series
1415           (gnus-summary-tick-article (pop article-series) t))))
1416
1417     ;; The original article buffer is hosed, shoot it down.
1418     (gnus-kill-buffer gnus-original-article-buffer)
1419     (setq gnus-current-article nil)
1420     result-files))
1421
1422 (defun gnus-uu-grab-view (file)
1423   "View FILE using the gnus-uu methods."
1424   (let ((action (gnus-uu-get-action file)))
1425     (gnus-execute-command
1426      (if (string-match "%" action)
1427          (format action file)
1428        (concat action " " file))
1429      (eq gnus-view-pseudos 'not-confirm))))
1430
1431 (defun gnus-uu-grab-move (file)
1432   "Move FILE to somewhere."
1433   (when gnus-uu-default-dir
1434     (let ((to-file (concat (file-name-as-directory gnus-uu-default-dir)
1435                            (file-name-nondirectory file))))
1436       (rename-file file to-file)
1437       (unless (file-exists-p file)
1438         (make-symbolic-link to-file file)))))
1439
1440 (defun gnus-uu-part-number (article)
1441   (let* ((header (gnus-summary-article-header article))
1442          (subject (and header (mail-header-subject header)))
1443          (part nil))
1444     (if subject
1445         (while (string-match "[0-9]+/[0-9]+\\|[0-9]+[ \t]+of[ \t]+[0-9]+"
1446                              subject)
1447           (setq part (match-string 0 subject))
1448           (setq subject (substring subject (match-end 0)))))
1449     (or part
1450         (while (string-match "[0-9]+[^0-9]+[0-9]+" subject)
1451           (setq part (match-string 0 subject))
1452           (setq subject (substring subject (match-end 0)))))
1453     (or part "")))
1454
1455 (defun gnus-uu-uudecode-sentinel (process event)
1456   (delete-process (get-process process)))
1457
1458 (defun gnus-uu-uustrip-article (process-buffer in-state)
1459   ;; Uudecodes a file asynchronously.
1460   (with-current-buffer process-buffer
1461     (let ((state (list 'wrong-type))
1462           process-connection-type case-fold-search buffer-read-only
1463           files start-char)
1464       (goto-char (point-min))
1465
1466       ;; Deal with ^M at the end of the lines.
1467       (when gnus-uu-kill-carriage-return
1468         (save-excursion
1469           (while (search-forward "\r" nil t)
1470             (delete-char -1))))
1471
1472       (while (or (re-search-forward gnus-uu-begin-string nil t)
1473                  (re-search-forward gnus-uu-body-line nil t))
1474         (setq state (list 'ok))
1475         ;; Ok, we are at the first uucoded line.
1476         (beginning-of-line)
1477         (setq start-char (point))
1478
1479         (if (not (looking-at gnus-uu-begin-string))
1480             (setq state (list 'middle))
1481           ;; This is the beginning of a uuencoded article.
1482           ;; We replace certain characters that could make things messy.
1483           (setq gnus-uu-file-name
1484                 (gnus-map-function
1485                  mm-file-name-rewrite-functions
1486                  (file-name-nondirectory (match-string 1))))
1487           (replace-match (concat "begin 644 " gnus-uu-file-name) t t)
1488
1489           ;; Remove any non gnus-uu-body-line right after start.
1490           (forward-line 1)
1491           (while (and (not (eobp))
1492                       (not (looking-at gnus-uu-body-line)))
1493             (gnus-delete-line))
1494
1495           ;; If a process is running, we kill it.
1496           (when (and gnus-uu-uudecode-process
1497                      (memq (process-status gnus-uu-uudecode-process)
1498                            '(run stop)))
1499             (delete-process gnus-uu-uudecode-process)
1500             (gnus-uu-unmark-list-of-grabbed t))
1501
1502           ;; Start a new uudecoding process.
1503           (let ((cdir default-directory))
1504             (unwind-protect
1505                 (progn
1506                   (cd gnus-uu-work-dir)
1507                   (setq gnus-uu-uudecode-process
1508                         (start-process
1509                          "*uudecode*"
1510                          (gnus-get-buffer-create gnus-uu-output-buffer-name)
1511                          shell-file-name shell-command-switch
1512                          (format "cd %s %s uudecode" gnus-uu-work-dir
1513                                  gnus-shell-command-separator))))
1514               (cd cdir)))
1515           (set-process-sentinel
1516            gnus-uu-uudecode-process 'gnus-uu-uudecode-sentinel)
1517           (setq state (list 'begin))
1518           (push (concat gnus-uu-work-dir gnus-uu-file-name) files))
1519
1520         ;; We look for the end of the thing to be decoded.
1521         (if (re-search-forward gnus-uu-end-string nil t)
1522             (push 'end state)
1523           (goto-char (point-max))
1524           (re-search-backward gnus-uu-body-line nil t))
1525
1526         (forward-line 1)
1527
1528         (when gnus-uu-uudecode-process
1529           (when (memq (process-status gnus-uu-uudecode-process) '(run stop))
1530             ;; Try to correct mishandled uucode.
1531             (when gnus-uu-correct-stripped-uucode
1532               (gnus-uu-check-correct-stripped-uucode start-char (point)))
1533             (gnus-run-hooks 'gnus-uu-pre-uudecode-hook)
1534
1535             ;; Send the text to the process.
1536             (condition-case nil
1537                 (process-send-region
1538                  gnus-uu-uudecode-process start-char (point))
1539               (error
1540                (progn
1541                  (delete-process gnus-uu-uudecode-process)
1542                  (gnus-message 2 "gnus-uu: Couldn't uudecode")
1543                  (setq state (list 'wrong-type)))))
1544
1545             (if (memq 'end state)
1546                 (progn
1547                   ;; Send an EOF, just in case.
1548                   (ignore-errors
1549                     (process-send-eof gnus-uu-uudecode-process))
1550                   (while (memq (process-status gnus-uu-uudecode-process)
1551                                '(open run))
1552                     (accept-process-output gnus-uu-uudecode-process 1)))
1553               (when (or (not gnus-uu-uudecode-process)
1554                         (not (memq (process-status gnus-uu-uudecode-process)
1555                                    '(run stop))))
1556                 (setq state (list 'wrong-type)))))))
1557
1558       (if (memq 'begin state)
1559           (cons (if (= (length files) 1) (car files) files) state)
1560         state))))
1561
1562 (defvar gnus-uu-unshar-warning
1563   "*** WARNING ***
1564
1565 Shell archives are an archaic method of bundling files for distribution
1566 across computer networks.  During the unpacking process, arbitrary commands
1567 are executed on your system, and all kinds of nasty things can happen.
1568 Please examine the archive very carefully before you instruct Emacs to
1569 unpack it.  You can browse the archive buffer using \\[scroll-other-window].
1570
1571 If you are unsure what to do, please answer \"no\"."
1572   "Text of warning message displayed by `gnus-uu-unshar-article'.
1573 Make sure that this text consists only of few text lines.  Otherwise,
1574 Gnus might fail to display all of it.")
1575
1576
1577 ;; This function is used by `gnus-uu-grab-articles' to treat
1578 ;; a shared article.
1579 (defun gnus-uu-unshar-article (process-buffer in-state)
1580   (let ((state (list 'ok))
1581         start-char)
1582     (with-current-buffer process-buffer
1583       (goto-char (point-min))
1584       (if (not (re-search-forward gnus-uu-shar-begin-string nil t))
1585           (setq state (list 'wrong-type))
1586         (save-window-excursion
1587           (save-excursion
1588             (switch-to-buffer (current-buffer))
1589             (delete-other-windows)
1590             (let ((buffer (get-buffer-create (generate-new-buffer-name
1591                                               "*Warning*"))))
1592               (unless
1593                   (unwind-protect
1594                       (with-current-buffer buffer
1595                         (insert (substitute-command-keys
1596                                  gnus-uu-unshar-warning))
1597                         (goto-char (point-min))
1598                         (display-buffer buffer)
1599                         (yes-or-no-p "This is a shell archive, unshar it? "))
1600                     (kill-buffer buffer))
1601                 (setq state (list 'error))))))
1602         (unless (memq 'error state)
1603           (beginning-of-line)
1604           (setq start-char (point))
1605           (call-process-region
1606            start-char (point-max) shell-file-name nil
1607            (gnus-get-buffer-create gnus-uu-output-buffer-name) nil
1608            shell-command-switch
1609            (concat "cd " gnus-uu-work-dir " "
1610                    gnus-shell-command-separator  " sh")))))
1611     state))
1612
1613 ;; `gnus-uu-choose-action' chooses what action to perform given the name
1614 ;; and `gnus-uu-file-action-list'.  Returns either nil if no action is
1615 ;; found, or the name of the command to run if such a rule is found.
1616 (defun gnus-uu-choose-action (file-name file-action-list &optional no-ignore)
1617   (let ((action-list (copy-sequence file-action-list))
1618         (case-fold-search t)
1619         rule action)
1620     (and
1621      (unless no-ignore
1622        (and (not
1623              (and gnus-uu-ignore-files-by-name
1624                   (string-match gnus-uu-ignore-files-by-name file-name)))
1625             (not
1626              (and gnus-uu-ignore-files-by-type
1627                   (string-match gnus-uu-ignore-files-by-type
1628                                 (or (gnus-uu-choose-action
1629                                      file-name gnus-uu-ext-to-mime-list t)
1630                                     ""))))))
1631      (while (not (or (eq action-list ()) action))
1632        (setq rule (car action-list))
1633        (setq action-list (cdr action-list))
1634        (when (string-match (car rule) file-name)
1635          (setq action (cadr rule)))))
1636     action))
1637
1638 (defun gnus-uu-treat-archive (file-path)
1639   ;; Unpacks an archive.  Returns t if unpacking is successful.
1640   (let ((did-unpack t)
1641         action command dir)
1642     (setq action (gnus-uu-choose-action
1643                   file-path (append gnus-uu-user-archive-rules
1644                                     (if gnus-uu-ignore-default-archive-rules
1645                                         nil
1646                                       gnus-uu-default-archive-rules))))
1647
1648     (when (not action)
1649       (error "No unpackers for the file %s" file-path))
1650
1651     (string-match "/[^/]*$" file-path)
1652     (setq dir (substring file-path 0 (match-beginning 0)))
1653
1654     (when (member action gnus-uu-destructive-archivers)
1655       (copy-file file-path (concat file-path "~") t))
1656
1657     (setq command (format "cd %s ; %s" dir (gnus-uu-command action file-path)))
1658
1659     (with-current-buffer (gnus-get-buffer-create gnus-uu-output-buffer-name)
1660       (erase-buffer))
1661
1662     (gnus-message 5 "Unpacking: %s..." (gnus-uu-command action file-path))
1663
1664     (if (eq 0 (call-process shell-file-name nil
1665                            (gnus-get-buffer-create gnus-uu-output-buffer-name)
1666                            nil shell-command-switch command))
1667         (message "")
1668       (gnus-message 2 "Error during unpacking of archive")
1669       (setq did-unpack nil))
1670
1671     (when (member action gnus-uu-destructive-archivers)
1672       (rename-file (concat file-path "~") file-path t))
1673
1674     did-unpack))
1675
1676 (defun gnus-uu-dir-files (dir)
1677   (let ((dirs (directory-files dir t "[^/][^\\.][^\\.]?$"))
1678         files file)
1679     (while dirs
1680       (if (file-directory-p (setq file (car dirs)))
1681           (setq files (append files (gnus-uu-dir-files file)))
1682         (push file files))
1683       (setq dirs (cdr dirs)))
1684     files))
1685
1686 (defun gnus-uu-unpack-files (files &optional ignore)
1687   ;; Go through FILES and look for files to unpack.
1688   (let* ((totfiles (gnus-uu-ls-r gnus-uu-work-dir))
1689          (ofiles files)
1690          file did-unpack)
1691     (while files
1692       (setq file (cdr (assq 'name (car files))))
1693       (when (and (not (member file ignore))
1694                  (equal (gnus-uu-get-action (file-name-nondirectory file))
1695                         "gnus-uu-archive"))
1696         (push file did-unpack)
1697         (unless (gnus-uu-treat-archive file)
1698           (gnus-message 2 "Error during unpacking of %s" file))
1699         (let* ((newfiles (gnus-uu-ls-r gnus-uu-work-dir))
1700                (nfiles newfiles))
1701           (while nfiles
1702             (unless (member (car nfiles) totfiles)
1703               (push (list (cons 'name (car nfiles))
1704                           (cons 'original file))
1705                     ofiles))
1706             (setq nfiles (cdr nfiles)))
1707           (setq totfiles newfiles)))
1708       (setq files (cdr files)))
1709     (if did-unpack
1710         (gnus-uu-unpack-files ofiles (append did-unpack ignore))
1711       ofiles)))
1712
1713 (defun gnus-uu-ls-r (dir)
1714   (let* ((files (gnus-uu-directory-files dir t))
1715          (ofiles files))
1716     (while files
1717       (when (file-directory-p (car files))
1718         (setq ofiles (delete (car files) ofiles))
1719         (setq ofiles (append ofiles (gnus-uu-ls-r (car files)))))
1720       (setq files (cdr files)))
1721     ofiles))
1722
1723 ;; Various stuff
1724
1725 (defun gnus-uu-directory-files (dir &optional full)
1726   (let (files out file)
1727     (setq files (directory-files dir full))
1728     (while files
1729       (setq file (car files))
1730       (setq files (cdr files))
1731       (unless (member (file-name-nondirectory file) '("." ".."))
1732         (push file out)))
1733     (setq out (nreverse out))
1734     out))
1735
1736 (defun gnus-uu-check-correct-stripped-uucode (start end)
1737   (save-excursion
1738     (let (found beg length)
1739       (unless gnus-uu-correct-stripped-uucode
1740         (goto-char start)
1741
1742         (if (re-search-forward " \\|`" end t)
1743             (progn
1744               (goto-char start)
1745               (while (not (eobp))
1746                 (progn
1747                   (when (looking-at "\n")
1748                     (replace-match ""))
1749                   (forward-line 1))))
1750
1751           (while (not (eobp))
1752             (unless (looking-at (concat gnus-uu-begin-string "\\|"
1753                                         gnus-uu-end-string))
1754               (when (not found)
1755                 (setq length (- (point-at-eol) (point-at-bol))))
1756               (setq found t)
1757               (beginning-of-line)
1758               (setq beg (point))
1759               (end-of-line)
1760               (unless (= length (- (point) beg))
1761                 (insert (make-string (- length (- (point) beg)) ? ))))
1762             (forward-line 1)))))))
1763
1764 (defvar gnus-uu-tmp-alist nil)
1765
1766 (defun gnus-uu-initialize (&optional scan)
1767   (let (entry)
1768     (if (and (not scan)
1769              (when (setq entry (assoc gnus-newsgroup-name gnus-uu-tmp-alist))
1770                (if (file-exists-p (cdr entry))
1771                    (setq gnus-uu-work-dir (cdr entry))
1772                  (setq gnus-uu-tmp-alist (delq entry gnus-uu-tmp-alist))
1773                  nil)))
1774         t
1775       (setq gnus-uu-tmp-dir (file-name-as-directory
1776                              (expand-file-name gnus-uu-tmp-dir)))
1777       (if (not (file-directory-p gnus-uu-tmp-dir))
1778           (error "Temp directory %s doesn't exist" gnus-uu-tmp-dir)
1779         (when (not (file-writable-p gnus-uu-tmp-dir))
1780           (error "Temp directory %s can't be written to"
1781                  gnus-uu-tmp-dir)))
1782
1783       (setq gnus-uu-work-dir
1784             (make-temp-file (concat gnus-uu-tmp-dir "gnus") 'dir))
1785       (gnus-set-file-modes gnus-uu-work-dir 448)
1786       (setq gnus-uu-work-dir (file-name-as-directory gnus-uu-work-dir))
1787       (push (cons gnus-newsgroup-name gnus-uu-work-dir)
1788             gnus-uu-tmp-alist))))
1789
1790
1791 ;; Kills the temporary uu buffers, kills any processes, etc.
1792 (defun gnus-uu-clean-up ()
1793   (let (buf)
1794     (and gnus-uu-uudecode-process
1795          (memq (process-status (or gnus-uu-uudecode-process "nevair"))
1796                '(stop run))
1797          (delete-process gnus-uu-uudecode-process))
1798     (when (setq buf (get-buffer gnus-uu-output-buffer-name))
1799       (kill-buffer buf))))
1800
1801 ;; Inputs an action and a filename and returns a full command, making sure
1802 ;; that the filename will be treated as a single argument when the shell
1803 ;; executes the command.
1804 (defun gnus-uu-command (action file)
1805   (let ((quoted-file (shell-quote-argument file)))
1806     (if (string-match "%s" action)
1807         (format action quoted-file)
1808       (concat action " " quoted-file))))
1809
1810 (defun gnus-uu-delete-work-dir (&optional dir)
1811   "Delete recursively all files and directories under `gnus-uu-work-dir'."
1812   (if dir
1813       (gnus-message 7 "Deleting directory %s..." dir)
1814     (setq dir gnus-uu-work-dir))
1815   (when (and dir
1816              (file-exists-p dir))
1817     (let ((files (directory-files dir t nil t))
1818           file)
1819       (while (setq file (pop files))
1820         (unless (member (file-name-nondirectory file) '("." ".."))
1821           (if (file-directory-p file)
1822               (gnus-uu-delete-work-dir file)
1823             (gnus-message 9 "Deleting file %s..." file)
1824             (condition-case err
1825                 (delete-file file)
1826               (error (gnus-message 3 "Deleting file %s failed... %s" file err))))))
1827       (condition-case err
1828           (delete-directory dir)
1829         (error (gnus-message 3 "Deleting directory %s failed... %s" file err))))
1830     (gnus-message 7 "")))
1831
1832 ;; Initializing
1833
1834 (add-hook 'gnus-summary-prepare-exit-hook 'gnus-uu-clean-up)
1835 (add-hook 'gnus-summary-prepare-exit-hook 'gnus-uu-delete-work-dir)
1836
1837 \f
1838
1839 ;;;
1840 ;;; uuencoded posting
1841 ;;;
1842
1843 ;; Any function that is to be used as and encoding method will take two
1844 ;; parameters: PATH-NAME and FILE-NAME.  (E.g. "/home/gaga/spiral.jpg"
1845 ;; and "spiral.jpg", respectively.) The function should return nil if
1846 ;; the encoding wasn't successful.
1847 (defcustom gnus-uu-post-encode-method 'gnus-uu-post-encode-uuencode
1848   "Function used for encoding binary files.
1849 There are three functions supplied with gnus-uu for encoding files:
1850 `gnus-uu-post-encode-uuencode', which does straight uuencoding;
1851 `gnus-uu-post-encode-mime', which encodes with base64 and adds MIME
1852 headers; and `gnus-uu-post-encode-mime-uuencode', which encodes with
1853 uuencode and adds MIME headers."
1854   :group 'gnus-extract-post
1855   :type '(radio (function-item gnus-uu-post-encode-uuencode)
1856                 (function-item gnus-uu-post-encode-mime)
1857                 (function-item gnus-uu-post-encode-mime-uuencode)
1858                 (function :tag "Other")))
1859
1860 (defcustom gnus-uu-post-include-before-composing nil
1861   "Non-nil means that gnus-uu will ask for a file to encode before you compose the article.
1862 If this variable is t, you can either include an encoded file with
1863 \\[gnus-uu-post-insert-binary-in-article] or have one included for you when you post the article."
1864   :group 'gnus-extract-post
1865   :type 'boolean)
1866
1867 (defcustom gnus-uu-post-length 990
1868   "Maximum length of an article.
1869 The encoded file will be split into how many articles it takes to
1870 post the entire file."
1871   :group 'gnus-extract-post
1872   :type 'integer)
1873
1874 (defcustom gnus-uu-post-threaded nil
1875   "Non-nil means that gnus-uu will post the encoded file in a thread.
1876 This may not be smart, as no other decoder I have seen are able to
1877 follow threads when collecting uuencoded articles.  (Well, I have seen
1878 one package that does that - gnus-uu, but somehow, I don't think that
1879 counts...)  The default is nil."
1880   :group 'gnus-extract-post
1881   :type 'boolean)
1882
1883 (defcustom gnus-uu-post-separate-description t
1884   "Non-nil means that the description will be posted in a separate article.
1885 The first article will typically be numbered (0/x).  If this variable
1886 is nil, the description the user enters will be included at the
1887 beginning of the first article, which will be numbered (1/x).  Default
1888 is t."
1889   :group 'gnus-extract-post
1890   :type 'boolean)
1891
1892 (defvar gnus-uu-post-binary-separator "--binary follows this line--")
1893 (defvar gnus-uu-post-message-id nil)
1894 (defvar gnus-uu-post-inserted-file-name nil)
1895 (defvar gnus-uu-winconf-post-news nil)
1896
1897 (defun gnus-uu-post-news ()
1898   "Compose an article and post an encoded file."
1899   (interactive)
1900   (setq gnus-uu-post-inserted-file-name nil)
1901   (setq gnus-uu-winconf-post-news (current-window-configuration))
1902
1903   (gnus-summary-post-news)
1904
1905   (let ((map (make-sparse-keymap)))
1906     (set-keymap-parent map (current-local-map))
1907     (use-local-map map))
1908   ;;(local-set-key "\C-c\C-c" 'gnus-summary-edit-article-done)
1909   (local-set-key "\C-c\C-c" 'gnus-uu-post-news-inews)
1910   (local-set-key "\C-c\C-s" 'gnus-uu-post-news-inews)
1911   (local-set-key "\C-c\C-i" 'gnus-uu-post-insert-binary-in-article)
1912
1913   (when gnus-uu-post-include-before-composing
1914     (save-excursion (setq gnus-uu-post-inserted-file-name
1915                           (gnus-uu-post-insert-binary)))))
1916
1917 (defun gnus-uu-post-insert-binary-in-article ()
1918   "Inserts an encoded file in the buffer.
1919 The user will be asked for a file name."
1920   (interactive)
1921   (save-excursion
1922     (setq gnus-uu-post-inserted-file-name (gnus-uu-post-insert-binary))))
1923
1924 ;; Encodes with uuencode and substitutes all spaces with backticks.
1925 (defun gnus-uu-post-encode-uuencode (path file-name)
1926   (when (gnus-uu-post-encode-file "uuencode" path file-name)
1927     (goto-char (point-min))
1928     (forward-line 1)
1929     (while (search-forward " " nil t)
1930       (replace-match "`"))
1931     t))
1932
1933 ;; Encodes with uuencode and adds MIME headers.
1934 (defun gnus-uu-post-encode-mime-uuencode (path file-name)
1935   (when (gnus-uu-post-encode-uuencode path file-name)
1936     (gnus-uu-post-make-mime file-name "x-uue")
1937     t))
1938
1939 ;; Encodes with base64 and adds MIME headers
1940 (defun gnus-uu-post-encode-mime (path file-name)
1941   (when (eq 0 (call-process shell-file-name nil t nil shell-command-switch
1942                             (format "%s %s -o %s" "mmencode" path file-name)))
1943     (gnus-uu-post-make-mime file-name "base64")
1944     t))
1945
1946 ;; Adds MIME headers.
1947 (defun gnus-uu-post-make-mime (file-name encoding)
1948   (goto-char (point-min))
1949   (insert (format "Content-Type: %s; name=\"%s\"\n"
1950                   (gnus-uu-choose-action file-name gnus-uu-ext-to-mime-list)
1951                   file-name))
1952   (insert (format "Content-Transfer-Encoding: %s\n\n" encoding))
1953   (save-restriction
1954     (set-buffer gnus-message-buffer)
1955     (goto-char (point-min))
1956     (re-search-forward (concat "^" (regexp-quote mail-header-separator) "$"))
1957     (forward-line -1)
1958     (narrow-to-region (point-min) (point))
1959     (unless (mail-fetch-field "mime-version")
1960       (widen)
1961       (insert "MIME-Version: 1.0\n"))
1962     (widen)))
1963
1964 ;; Encodes a file PATH with COMMAND, leaving the result in the
1965 ;; current buffer.
1966 (defun gnus-uu-post-encode-file (command path file-name)
1967   (eq 0 (call-process shell-file-name nil t nil shell-command-switch
1968                       (format "%s %s %s" command path file-name))))
1969
1970 (defun gnus-uu-post-news-inews ()
1971   "Posts the composed news article and encoded file.
1972 If no file has been included, the user will be asked for a file."
1973   (interactive)
1974
1975   (let (file-name)
1976
1977     (if gnus-uu-post-inserted-file-name
1978         (setq file-name gnus-uu-post-inserted-file-name)
1979       (setq file-name (gnus-uu-post-insert-binary)))
1980
1981     (gnus-uu-post-encoded file-name gnus-uu-post-threaded))
1982   (setq gnus-uu-post-inserted-file-name nil)
1983   (when gnus-uu-winconf-post-news
1984     (set-window-configuration gnus-uu-winconf-post-news)))
1985
1986 ;; Asks for a file to encode, encodes it and inserts the result in
1987 ;; the current buffer.  Returns the file name the user gave.
1988 (defun gnus-uu-post-insert-binary ()
1989   (let ((uuencode-buffer-name "*uuencode buffer*")
1990         file-path uubuf file-name)
1991
1992     (setq file-path (read-file-name
1993                      "What file do you want to encode? "))
1994     (when (not (file-exists-p file-path))
1995       (error "%s: No such file" file-path))
1996
1997     (goto-char (point-max))
1998     (insert (format "\n%s\n" gnus-uu-post-binary-separator))
1999
2000     ;; #### Unix-specific?
2001     (when (string-match "^~/" file-path)
2002       (setq file-path (concat "$HOME" (substring file-path 1))))
2003     ;; #### Unix-specific?
2004     (if (string-match "/[^/]*$" file-path)
2005         (setq file-name (substring file-path (1+ (match-beginning 0))))
2006       (setq file-name file-path))
2007
2008     (unwind-protect
2009         (if (with-current-buffer
2010                 (setq uubuf (gnus-get-buffer-create uuencode-buffer-name))
2011               (erase-buffer)
2012               (funcall gnus-uu-post-encode-method file-path file-name))
2013             (insert-buffer-substring uubuf)
2014           (error "Encoding unsuccessful"))
2015       (kill-buffer uubuf))
2016     file-name))
2017
2018 ;; Posts the article and all of the encoded file.
2019 (defun gnus-uu-post-encoded (file-name &optional threaded)
2020   (let ((send-buffer-name "*uuencode send buffer*")
2021         (encoded-buffer-name "*encoded buffer*")
2022         (top-string "[ cut here %s (%s %d/%d) %s gnus-uu ]")
2023         (separator (concat mail-header-separator "\n\n"))
2024         uubuf length parts header i end beg
2025         beg-line minlen post-buf whole-len beg-binary end-binary)
2026
2027     (setq post-buf (current-buffer))
2028
2029     (goto-char (point-min))
2030     (when (not (re-search-forward
2031                 (if gnus-uu-post-separate-description
2032                     (concat "^" (regexp-quote gnus-uu-post-binary-separator)
2033                             "$")
2034                   (concat "^" (regexp-quote mail-header-separator) "$"))
2035                 nil t))
2036       (error "Internal error: No binary/header separator"))
2037     (beginning-of-line)
2038     (forward-line 1)
2039     (setq beg-binary (point))
2040     (setq end-binary (point-max))
2041
2042     (with-current-buffer
2043         (setq uubuf (gnus-get-buffer-create encoded-buffer-name))
2044       (erase-buffer)
2045       (insert-buffer-substring post-buf beg-binary end-binary)
2046       (goto-char (point-min))
2047       (setq length (count-lines (point-min) (point-max)))
2048       (setq parts (/ length gnus-uu-post-length))
2049       (unless (< (% length gnus-uu-post-length) 4)
2050         (incf parts)))
2051
2052     (when gnus-uu-post-separate-description
2053       (forward-line -1))
2054     (delete-region (point) (point-max))
2055
2056     (goto-char (point-min))
2057     (re-search-forward
2058      (concat "^" (regexp-quote mail-header-separator) "$") nil t)
2059     (setq header (buffer-substring (point-min) (point-at-bol)))
2060
2061     (goto-char (point-min))
2062     (when gnus-uu-post-separate-description
2063       (when (re-search-forward "^Subject: " nil t)
2064         (end-of-line)
2065         (insert (format " (0/%d)" parts)))
2066       (save-excursion
2067         (message-send))
2068       (setq gnus-uu-post-message-id (message-fetch-field "message-id")))
2069
2070     (save-excursion
2071       (setq i 1)
2072       (setq beg 1)
2073       (while (not (> i parts))
2074         (set-buffer (gnus-get-buffer-create send-buffer-name))
2075         (erase-buffer)
2076         (insert header)
2077         (when (and threaded gnus-uu-post-message-id)
2078           (insert "References: " gnus-uu-post-message-id "\n"))
2079         (insert separator)
2080         (setq whole-len
2081               (- 62 (length (format top-string "" file-name i parts ""))))
2082         (when (> 1 (setq minlen (/ whole-len 2)))
2083           (setq minlen 1))
2084         (setq
2085          beg-line
2086          (format top-string
2087                  (make-string minlen ?-)
2088                  file-name i parts
2089                  (make-string
2090                   (if (= 0 (% whole-len 2)) (1- minlen) minlen) ?-)))
2091
2092         (goto-char (point-min))
2093         (when (re-search-forward "^Subject: " nil t)
2094           (end-of-line)
2095           (insert (format " (%d/%d)" i parts)))
2096
2097         (goto-char (point-max))
2098         (with-current-buffer uubuf
2099           (goto-char beg)
2100           (if (= i parts)
2101               (goto-char (point-max))
2102             (forward-line gnus-uu-post-length))
2103           (when (and (= (1+ i) parts) (< (count-lines (point) (point-max)) 4))
2104             (forward-line -4))
2105           (setq end (point)))
2106         (insert-buffer-substring uubuf beg end)
2107         (insert beg-line "\n")
2108         (setq beg end)
2109         (incf i)
2110         (goto-char (point-min))
2111         (re-search-forward
2112          (concat "^" (regexp-quote mail-header-separator) "$") nil t)
2113         (beginning-of-line)
2114         (forward-line 2)
2115         (when (re-search-forward
2116                (concat "^" (regexp-quote gnus-uu-post-binary-separator) "$")
2117                nil t)
2118           (replace-match "")
2119           (forward-line 1))
2120         (insert beg-line)
2121         (insert "\n")
2122         (let (message-sent-message-via)
2123           (save-excursion
2124             (message-send))
2125           (setq gnus-uu-post-message-id
2126                 (concat (message-fetch-field "references") " "
2127                         (message-fetch-field "message-id"))))))
2128
2129     (gnus-kill-buffer send-buffer-name)
2130     (gnus-kill-buffer encoded-buffer-name)
2131
2132     (when (not gnus-uu-post-separate-description)
2133       (set-buffer-modified-p nil)
2134       (bury-buffer))))
2135
2136 (provide 'gnus-uu)
2137
2138 ;;; gnus-uu.el ends here