(require 'nntp)
(require 'nnheader)
(require 'gnus)
(require 'gnus-score)
(require 'nnoo)
(require 'mm-util)
(eval-when-compile (require 'cl))
(nnoo-declare nnkiboze)
(defvoo nnkiboze-directory (nnheader-concat gnus-directory "kiboze/")
"nnkiboze will put its files in this directory.")
(defvoo nnkiboze-level 9
"The maximum level to be searched for articles.")
(defvoo nnkiboze-remove-read-articles t
"If non-nil, nnkiboze will remove read articles from the kiboze group.")
(defvoo nnkiboze-ephemeral nil
"If non-nil, don't store any data anywhere.")
(defvoo nnkiboze-scores nil
"Score rules for generating the nnkiboze group.")
(defvoo nnkiboze-regexp nil
"Regexp for matching component groups.")
(defvoo nnkiboze-file-coding-system mm-text-coding-system
"Coding system for nnkiboze files.")
(defconst nnkiboze-version "nnkiboze 1.0")
(defvoo nnkiboze-current-group nil)
(defvoo nnkiboze-status-string "")
(defvoo nnkiboze-headers nil)
(nnoo-define-basics nnkiboze)
(deffoo nnkiboze-retrieve-headers (articles &optional group server fetch-old)
(nnkiboze-possibly-change-group group)
(unless gnus-nov-is-evil
(if (stringp (car articles))
'headers
(let ((nov (nnkiboze-nov-file-name)))
(when (file-exists-p nov)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(let ((nnheader-file-coding-system nnkiboze-file-coding-system))
(nnheader-insert-file-contents nov))
(nnheader-nov-delete-outside-range
(car articles) (car (last articles)))
'nov))))))
(deffoo nnkiboze-request-article (article &optional newsgroup server buffer)
(nnkiboze-possibly-change-group newsgroup)
(if (not (numberp article))
(nntp-request-article article newsgroup gnus-nntp-server buffer)
(let* ((header (gnus-summary-article-header article))
(xref (mail-header-xref header))
num group)
(unless xref
(error "nnkiboze: No xref"))
(unless (string-match " \\([^ ]+\\):\\([0-9]+\\)" xref)
(error "nnkiboze: Malformed xref"))
(setq num (string-to-number (match-string 2 xref))
group (match-string 1 xref))
(or (with-current-buffer buffer
(or (and gnus-use-cache (gnus-cache-request-article num group))
(gnus-agent-request-article num group)))
(gnus-request-article num group buffer)))))
(deffoo nnkiboze-request-scan (&optional group server)
(nnkiboze-possibly-change-group group)
(nnkiboze-generate-group (concat "nnkiboze:" group)))
(deffoo nnkiboze-request-group (group &optional server dont-check)
"Make GROUP the current newsgroup."
(nnkiboze-possibly-change-group group)
(if dont-check
t
(let ((nov-file (nnkiboze-nov-file-name))
beg end total)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(unless (file-exists-p nov-file)
(nnkiboze-request-scan group))
(if (not (file-exists-p nov-file))
(nnheader-report 'nnkiboze "Can't select group %s" group)
(let ((nnheader-file-coding-system nnkiboze-file-coding-system))
(nnheader-insert-file-contents nov-file))
(if (zerop (buffer-size))
(nnheader-insert "211 0 0 0 %s\n" group)
(goto-char (point-min))
(when (looking-at "[0-9]+")
(setq beg (read (current-buffer))))
(goto-char (point-max))
(when (re-search-backward "^[0-9]" nil t)
(setq end (read (current-buffer))))
(setq total (count-lines (point-min) (point-max)))
(nnheader-insert "211 %d %d %d %s\n" total beg end group)))))))
(deffoo nnkiboze-close-group (group &optional server)
(nnkiboze-possibly-change-group group)
(when (and (file-exists-p (nnkiboze-nov-file-name))
nnkiboze-remove-read-articles)
(let ((coding-system-for-write nnkiboze-file-coding-system))
(with-temp-file (nnkiboze-nov-file-name)
(let ((cur (current-buffer))
(nnheader-file-coding-system nnkiboze-file-coding-system))
(nnheader-insert-file-contents (nnkiboze-nov-file-name))
(goto-char (point-min))
(while (not (eobp))
(if (not (gnus-article-read-p (read cur)))
(forward-line 1)
(gnus-delete-line))))))
(setq nnkiboze-current-group nil)))
(deffoo nnkiboze-open-server (server &optional defs)
(unless (assq 'nnkiboze-regexp defs)
(push `(nnkiboze-regexp ,server)
defs))
(nnoo-change-server 'nnkiboze server defs))
(deffoo nnkiboze-request-delete-group (group &optional force server)
(nnkiboze-possibly-change-group group)
(when force
(let ((files (nconc
(nnkiboze-score-file group)
(list (nnkiboze-nov-file-name)
(nnkiboze-nov-file-name ".newsrc")))))
(while files
(and (file-exists-p (car files))
(file-writable-p (car files))
(delete-file (car files)))
(setq files (cdr files)))))
(setq nnkiboze-current-group nil)
t)
(nnoo-define-skeleton nnkiboze)
(defun nnkiboze-possibly-change-group (group)
(setq nnkiboze-current-group group))
(defun nnkiboze-prefixed-name (group)
(gnus-group-prefixed-name group '(nnkiboze "")))
(defun nnkiboze-generate-groups ()
"\"Usage: emacs -batch -l nnkiboze -f nnkiboze-generate-groups\".
Finds out what articles are to be part of the nnkiboze groups."
(interactive)
(let ((nnmail-spool-file nil)
(mail-sources nil)
(gnus-use-dribble-file nil)
(gnus-read-active-file t)
(gnus-expert-user t))
(gnus))
(let* ((gnus-newsrc-alist (gnus-copy-sequence gnus-newsrc-alist))
(newsrc (cdr gnus-newsrc-alist))
gnus-newsrc-hashtb info)
(gnus-make-hashtable-from-newsrc-alist)
(while (setq info (pop newsrc))
(when (string-match "nnkiboze" (gnus-info-group info))
(nnkiboze-generate-group (gnus-info-group info) t))))
(save-excursion
(set-buffer gnus-group-buffer)
(gnus-group-list-groups)))
(defun nnkiboze-score-file (group)
(list (expand-file-name
(concat (file-name-as-directory gnus-kill-files-directory)
(nnheader-translate-file-chars
(concat (nnkiboze-prefixed-name nnkiboze-current-group)
"." gnus-score-file-suffix))))))
(defun nnkiboze-generate-group (group &optional inhibit-list-groups)
(let* ((info (nth 2 (gnus-gethash group gnus-newsrc-hashtb)))
(newsrc-file (concat nnkiboze-directory
(nnheader-translate-file-chars
(concat group ".newsrc"))))
(nov-file (concat nnkiboze-directory
(nnheader-translate-file-chars
(concat group ".nov"))))
method nnkiboze-newsrc gname newsrc active
ginfo lowest glevel orig-info nov-buffer
(gnus-expert-user t)
(gnus-large-newsgroup nil)
(gnus-score-find-score-files-function 'nnkiboze-score-file)
(gnus-score-use-all-scores nil)
(gnus-use-scoring t)
(gnus-verbose (min gnus-verbose 3))
gnus-select-group-hook gnus-summary-prepare-hook
gnus-thread-sort-functions gnus-show-threads
gnus-visual gnus-suppress-duplicates num-unread)
(unless info
(error "No such group: %s" group))
(mm-with-unibyte
(when (file-exists-p newsrc-file)
(load newsrc-file))
(let ((coding-system-for-write nnkiboze-file-coding-system))
(gnus-make-directory (file-name-directory nov-file))
(with-temp-file nov-file
(when (file-exists-p nov-file)
(insert-file-contents nov-file))
(setq nov-buffer (current-buffer))
(mapatoms
(lambda (group)
(and (string-match nnkiboze-regexp
(setq gname (symbol-name group))) (not (assoc gname nnkiboze-newsrc)) (numberp (car (symbol-value group))) (or (> nnkiboze-level 7)
(and (setq glevel
(nth 1 (nth 2 (gnus-gethash
gname gnus-newsrc-hashtb))))
(>= nnkiboze-level glevel)))
(not (string-match "^nnkiboze:" gname)) (push (cons gname (1- (car (symbol-value group))))
nnkiboze-newsrc)))
gnus-active-hashtb)
(setq newsrc nnkiboze-newsrc)
(while newsrc
(if (not (setq active (gnus-gethash
(caar newsrc) gnus-active-hashtb)))
(setq nnkiboze-newsrc (delq (car newsrc) nnkiboze-newsrc))
(setq lowest (cdar newsrc))
(switch-to-buffer gnus-group-buffer)
(gnus-group-jump-to-group (caar newsrc))
(gnus-message 3 "nnkiboze: Checking %s..." (caar newsrc))
(setq ginfo (gnus-get-info (gnus-group-group-name))
orig-info (gnus-copy-sequence ginfo)
num-unread (car (gnus-gethash (caar newsrc)
gnus-newsrc-hashtb)))
(unwind-protect
(progn
(when (nth 3 ginfo)
(setcar (nthcdr 3 ginfo) nil))
(when ginfo
(setcar (nthcdr 2 ginfo)
(and (not (= lowest 1)) (cons 1 lowest))))
(when (and (or (not ginfo)
(> (length (gnus-list-of-unread-articles
(car ginfo)))
0))
(progn
(ignore-errors
(gnus-group-select-group nil))
(eq major-mode 'gnus-summary-mode)))
(setq method (gnus-find-method-for-group
gnus-newsgroup-name))
(when (eq method gnus-select-method)
(setq method nil))
(while gnus-newsgroup-scored
(when (> (caar gnus-newsgroup-scored) lowest)
(nnkiboze-enter-nov
nov-buffer
(gnus-summary-article-header
(caar gnus-newsgroup-scored))
gnus-newsgroup-name))
(setq gnus-newsgroup-scored (cdr gnus-newsgroup-scored)))
(when (eq major-mode 'gnus-summary-mode)
(kill-buffer (current-buffer)))))
(when ginfo
(setcdr ginfo (cdr orig-info)))
(setcar (gnus-gethash (caar newsrc) gnus-newsrc-hashtb)
num-unread)))
(setcdr (car newsrc) (cdr active))
(gnus-message 3 "nnkiboze: Checking %s...done" (caar newsrc))
(setq newsrc (cdr newsrc)))))
(gnus-make-directory (file-name-directory newsrc-file))
(with-temp-file newsrc-file
(insert "(setq nnkiboze-newsrc '")
(gnus-prin1 nnkiboze-newsrc)
(insert ")\n")))
(unless inhibit-list-groups
(save-excursion
(set-buffer gnus-group-buffer)
(gnus-group-list-groups)))
t))
(defun nnkiboze-enter-nov (buffer header group)
(save-excursion
(set-buffer buffer)
(goto-char (point-max))
(let ((prefix (gnus-group-real-prefix group))
(oheader (copy-sequence header))
article)
(if (zerop (forward-line -1))
(progn
(setq article (1+ (read (current-buffer))))
(forward-line 1))
(setq article 1))
(mail-header-set-number oheader article)
(with-temp-buffer
(insert (or (mail-header-xref oheader) ""))
(goto-char (point-min))
(if (re-search-forward " [^ ]+:[0-9]+" nil t)
(goto-char (match-beginning 0))
(or (eobp) (forward-char 1)))
(insert " " group ":"
(int-to-string (mail-header-number header)) " ")
(while (re-search-forward " [^ ]+:[0-9]+" nil t)
(goto-char (1+ (match-beginning 0)))
(insert prefix))
(mail-header-set-xref oheader (buffer-string)))
(nnheader-insert-nov oheader))))
(defun nnkiboze-nov-file-name (&optional suffix)
(concat (file-name-as-directory nnkiboze-directory)
(nnheader-translate-file-chars
(concat (nnkiboze-prefixed-name nnkiboze-current-group)
(or suffix ".nov")))))
(provide 'nnkiboze)