(require 'nnheader)
(require 'nnmail)
(require 'gnus-start)
(require 'nnoo)
(eval-when-compile (require 'cl))
(nnoo-declare nnmh)
(defvoo nnmh-directory message-directory
"Mail spool directory.")
(defvoo nnmh-get-new-mail t
"If non-nil, nnmh will check the incoming mail file and split the mail.")
(defvoo nnmh-prepare-save-mail-hook nil
"Hook run narrowed to an article before saving.")
(defvoo nnmh-be-safe nil
"If non-nil, nnmh will check all articles to make sure whether they are new or not.
Go through the .nnmh-articles file and compare with the actual
articles in this folder. The articles that are \"new\" will be marked
as unread by Gnus.")
(defconst nnmh-version "nnmh 1.0"
"nnmh version.")
(defvoo nnmh-current-directory nil
"Current news group directory.")
(defvoo nnmh-status-string "")
(defvoo nnmh-group-alist nil)
(defvar nnmh-allow-delete-final nil)
(nnoo-define-basics nnmh)
(deffoo nnmh-retrieve-headers (articles &optional newsgroup server fetch-old)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(let* ((file nil)
(number (length articles))
(large (and (numberp nnmail-large-newsgroup)
(> number nnmail-large-newsgroup)))
(count 0)
(file-name-coding-system nnmail-pathname-coding-system)
beg article)
(nnmh-possibly-change-directory newsgroup server)
(if (stringp (car articles))
'headers
(while articles
(when (and (file-exists-p
(setq file (concat (file-name-as-directory
nnmh-current-directory)
(int-to-string
(setq article (pop articles))))))
(not (file-directory-p file)))
(insert (format "221 %d Article retrieved.\n" article))
(setq beg (point))
(nnheader-insert-head file)
(goto-char beg)
(if (search-forward "\n\n" nil t)
(forward-char -1)
(goto-char (point-max))
(insert "\n\n"))
(insert ".\n")
(delete-region (point) (point-max)))
(setq count (1+ count))
(and large
(zerop (% count 20))
(nnheader-message 5 "nnmh: Receiving headers... %d%%"
(/ (* count 100) number))))
(when large
(nnheader-message 5 "nnmh: Receiving headers...done"))
(nnheader-fold-continuation-lines)
'headers))))
(deffoo nnmh-open-server (server &optional defs)
(nnoo-change-server 'nnmh server defs)
(when (not (file-exists-p nnmh-directory))
(condition-case ()
(make-directory nnmh-directory t)
(error t)))
(cond
((not (file-exists-p nnmh-directory))
(nnmh-close-server)
(nnheader-report 'nnmh "Couldn't create directory: %s" nnmh-directory))
((not (file-directory-p (file-truename nnmh-directory)))
(nnmh-close-server)
(nnheader-report 'nnmh "Not a directory: %s" nnmh-directory))
(t
(nnheader-report 'nnmh "Opened server %s using directory %s"
server nnmh-directory)
t)))
(deffoo nnmh-request-article (id &optional newsgroup server buffer)
(nnmh-possibly-change-directory newsgroup server)
(let ((file (if (stringp id)
nil
(concat nnmh-current-directory (int-to-string id))))
(file-name-coding-system nnmail-pathname-coding-system)
(nntp-server-buffer (or buffer nntp-server-buffer)))
(and (stringp file)
(file-exists-p file)
(not (file-directory-p file))
(save-excursion (nnmail-find-file file))
(string-to-number (file-name-nondirectory file)))))
(deffoo nnmh-request-group (group &optional server dont-check)
(nnheader-init-server-buffer)
(nnmh-possibly-change-directory group server)
(let ((pathname (nnmail-group-pathname group nnmh-directory))
(file-name-coding-system nnmail-pathname-coding-system)
dir)
(cond
((not (file-directory-p pathname))
(nnheader-report
'nnmh "Can't select group (no such directory): %s" group))
(t
(setq nnmh-current-directory pathname)
(and nnmh-get-new-mail
nnmh-be-safe
(nnmh-update-gnus-unreads group))
(cond
(dont-check
(nnheader-report 'nnmh "Selected group %s" group)
t)
(t
(nnheader-re-read-dir pathname)
(setq dir
(sort
(mapcar (lambda (name) (string-to-number name))
(directory-files pathname nil "^[0-9]+$" t))
'<))
(cond
(dir
(setq nnmh-group-alist
(delq (assoc group nnmh-group-alist) nnmh-group-alist))
(push (list group (cons (car dir) (car (last dir))))
nnmh-group-alist)
(nnheader-report 'nnmh "Selected group %s" group)
(nnheader-insert
"211 %d %d %d %s\n" (length dir) (car dir)
(car (last dir)) group))
(t
(nnheader-report 'nnmh "Empty group %s" group)
(nnheader-insert (format "211 0 1 0 %s\n" group))))))))))
(deffoo nnmh-request-scan (&optional group server)
(nnmail-get-new-mail 'nnmh nil nnmh-directory group))
(deffoo nnmh-request-list (&optional server dir)
(nnheader-insert "")
(nnmh-possibly-change-directory nil server)
(let ((file-name-coding-system nnmail-pathname-coding-system)
(nnmh-toplev
(file-truename (or dir (file-name-as-directory nnmh-directory)))))
(nnmh-request-list-1 nnmh-toplev))
(setq nnmh-group-alist (nnmail-get-active))
t)
(defvar nnmh-toplev)
(defun nnmh-request-list-1 (dir)
(setq dir (expand-file-name dir))
(let ((dirs (and (file-readable-p dir)
(> (nth 1 (file-attributes (file-chase-links dir))) 2)
(nnheader-directory-files dir t nil t)))
rdir)
(while (setq rdir (pop dirs))
(when (and (file-directory-p rdir)
(file-readable-p rdir)
(not (equal (file-truename rdir)
(file-truename dir))))
(nnmh-request-list-1 rdir))))
(unless (string= (expand-file-name nnmh-toplev) dir)
(let ((files (mapcar
(lambda (name) (string-to-number name))
(directory-files dir nil "^[0-9]+$" t))))
(when files
(save-excursion
(set-buffer nntp-server-buffer)
(goto-char (point-max))
(insert
(format
"%s %.0f %.0f y\n"
(progn
(string-match
(regexp-quote
(file-truename (file-name-as-directory
(expand-file-name nnmh-toplev))))
dir)
(mm-string-as-multibyte
(mm-encode-coding-string
(nnheader-replace-chars-in-string
(substring dir (match-end 0))
?/ ?.)
nnmail-pathname-coding-system)))
(apply 'max files)
(apply 'min files)))))))
t)
(deffoo nnmh-request-newgroups (date &optional server)
(nnmh-request-list server))
(deffoo nnmh-request-expire-articles (articles newsgroup
&optional server force)
(nnmh-possibly-change-directory newsgroup server)
(let* ((is-old t)
article rest mod-time)
(nnheader-init-server-buffer)
(while (and articles is-old)
(setq article (concat nnmh-current-directory
(int-to-string (car articles))))
(when (setq mod-time (nth 5 (file-attributes article)))
(if (and (nnmh-deletable-article-p newsgroup (car articles))
(setq is-old
(nnmail-expired-article-p newsgroup mod-time force)))
(progn
(unless (eq nnmail-expiry-target 'delete)
(with-temp-buffer
(nnmh-request-article (car articles)
newsgroup server (current-buffer))
(nnmail-expiry-target-group
nnmail-expiry-target newsgroup)))
(nnheader-message 5 "Deleting article %s in %s..."
article newsgroup)
(condition-case ()
(funcall nnmail-delete-file-function article)
(file-error
(nnheader-message 1 "Couldn't delete article %s in %s"
article newsgroup)
(push (car articles) rest))))
(push (car articles) rest)))
(setq articles (cdr articles)))
(nnheader-message 5 "")
(nconc rest articles)))
(deffoo nnmh-close-group (group &optional server)
t)
(deffoo nnmh-request-move-article (article group server
accept-form &optional last)
(let ((buf (get-buffer-create " *nnmh move*"))
result)
(and
(nnmh-deletable-article-p group article)
(nnmh-request-article article group server)
(save-excursion
(set-buffer buf)
(erase-buffer)
(insert-buffer-substring nntp-server-buffer)
(setq result (eval accept-form))
(kill-buffer (current-buffer))
result)
(progn
(nnmh-possibly-change-directory group server)
(condition-case ()
(funcall nnmail-delete-file-function
(concat nnmh-current-directory (int-to-string article)))
(file-error nil))))
result))
(deffoo nnmh-request-accept-article (group &optional server last noinsert)
(nnmh-possibly-change-directory group server)
(nnmail-check-syntax)
(when nnmail-cache-accepted-message-ids
(nnmail-cache-insert (nnmail-fetch-field "message-id")
group
(nnmail-fetch-field "subject")
(nnmail-fetch-field "from")))
(nnheader-init-server-buffer)
(prog1
(if (stringp group)
(if noinsert
(nnmh-active-number group)
(car (nnmh-save-mail
(list (cons group (nnmh-active-number group)))
noinsert)))
(let ((res (nnmail-article-group 'nnmh-active-number)))
(if (and (null res)
(yes-or-no-p "Moved to `junk' group; delete article? "))
'junk
(car (nnmh-save-mail res noinsert)))))
(when (and last nnmail-cache-accepted-message-ids)
(nnmail-cache-close))))
(deffoo nnmh-request-replace-article (article group buffer)
(nnmh-possibly-change-directory group)
(save-excursion
(set-buffer buffer)
(nnmh-possibly-create-directory group)
(ignore-errors
(nnmail-write-region
(point-min) (point-max)
(concat nnmh-current-directory (int-to-string article))
nil (if (nnheader-be-verbose 5) nil 'nomesg))
t)))
(deffoo nnmh-request-create-group (group &optional server args)
(nnheader-init-server-buffer)
(unless (assoc group nnmh-group-alist)
(let (active)
(push (list group (setq active (cons 1 0)))
nnmh-group-alist)
(nnmh-possibly-create-directory group)
(nnmh-possibly-change-directory group server)
(let ((articles (mapcar
(lambda (file)
(string-to-number file))
(directory-files
nnmh-current-directory nil "^[0-9]+$"))))
(when articles
(setcar active (apply 'min articles))
(setcdr active (apply 'max articles))))))
t)
(deffoo nnmh-request-delete-group (group &optional force server)
(nnmh-possibly-change-directory group server)
(if (not force)
() (let ((articles (directory-files nnmh-current-directory t "^[0-9]+$")))
(while articles
(when (file-writable-p (car articles))
(nnheader-message 5 "Deleting article %s in %s..."
(car articles) group)
(funcall nnmail-delete-file-function (car articles)))
(setq articles (cdr articles))))
(ignore-errors
(delete-directory nnmh-current-directory)))
(setq nnmh-group-alist
(delq (assoc group nnmh-group-alist) nnmh-group-alist)
nnmh-current-directory nil)
t)
(deffoo nnmh-request-rename-group (group new-name &optional server)
(nnmh-possibly-change-directory group server)
(let ((new-dir (nnmail-group-pathname new-name nnmh-directory))
(old-dir (nnmail-group-pathname group nnmh-directory)))
(when (ignore-errors
(make-directory new-dir t)
t)
(let ((files (nnheader-article-to-file-alist old-dir)))
(while files
(rename-file
(concat old-dir (cdar files))
(concat new-dir (cdar files)))
(pop files)))
(when (<= (length (directory-files old-dir)) 2)
(ignore-errors
(delete-directory old-dir)))
(let ((entry (assoc group nnmh-group-alist)))
(when entry
(setcar entry new-name))
(setq nnmh-current-directory nil)
t))))
(nnoo-define-skeleton nnmh)
(defun nnmh-possibly-change-directory (newsgroup &optional server)
(when (and server
(not (nnmh-server-opened server)))
(nnmh-open-server server))
(when newsgroup
(let ((pathname (nnmail-group-pathname newsgroup nnmh-directory))
(file-name-coding-system nnmail-pathname-coding-system))
(if (file-directory-p pathname)
(setq nnmh-current-directory pathname)
(nnheader-report 'nnmh "Not a directory: %s" nnmh-directory)))))
(defun nnmh-possibly-create-directory (group)
(let (dir dirs)
(setq dir (nnmail-group-pathname group nnmh-directory))
(while (not (file-directory-p dir))
(push dir dirs)
(setq dir (file-name-directory (directory-file-name dir))))
(while dirs
(when (make-directory (directory-file-name (car dirs)))
(error "Could not create directory %s" (car dirs)))
(nnheader-message 5 "Creating mail directory %s" (car dirs))
(setq dirs (cdr dirs)))))
(defun nnmh-save-mail (group-art &optional noinsert)
"Called narrowed to an article."
(unless noinsert
(nnmail-insert-lines)
(nnmail-insert-xref group-art))
(run-hooks 'nnmail-prepare-save-mail-hook)
(run-hooks 'nnmh-prepare-save-mail-hook)
(goto-char (point-min))
(while (looking-at "From ")
(replace-match "X-From-Line: ")
(forward-line 1))
(let ((ga group-art)
first)
(while ga
(nnmh-possibly-create-directory (caar ga))
(let ((file (concat (nnmail-group-pathname
(caar ga) nnmh-directory)
(int-to-string (cdar ga)))))
(if first
(funcall nnmail-crosspost-link-function first file t)
(nnmail-write-region (point-min) (point-max) file nil nil)
(setq first file)))
(setq ga (cdr ga))))
group-art)
(defun nnmh-active-number (group)
"Compute the next article number in GROUP."
(let ((active (cadr (assoc group nnmh-group-alist)))
(dir (nnmail-group-pathname group nnmh-directory))
(file-name-coding-system nnmail-pathname-coding-system)
file)
(unless active
(setq active (cons 1 0))
(push (list group active) nnmh-group-alist)
(unless (file-exists-p dir)
(gnus-make-directory dir))
(let ((files (sort
(mapcar
(lambda (f)
(string-to-number f))
(directory-files dir nil "^[0-9]+$"))
'>)))
(when files
(setcdr active (car files)))))
(setcdr active (1+ (cdr active)))
(while (or
(file-exists-p
(setq file (concat (nnmail-group-pathname group nnmh-directory)
(int-to-string (cdr active)))))
(get-file-buffer file))
(setcdr active (1+ (cdr active))))
(cdr active)))
(defun nnmh-update-gnus-unreads (group)
(let* ((dir nnmh-current-directory)
(files (sort (mapcar (function (lambda (name) (string-to-number name)))
(directory-files nnmh-current-directory
nil "^[0-9]+$" t))
'<))
(nnmh-file (concat dir ".nnmh-articles"))
new articles)
(when (file-exists-p nnmh-file)
(setq articles
(let (nnmh-newsgroup-articles)
(ignore-errors (load nnmh-file nil t t))
nnmh-newsgroup-articles)))
(let ((art files))
(while art
(unless (assq (car art) articles)
(push (car art) new))
(setq art (cdr art))))
(let ((art articles))
(while art
(unless (memq (caar art) files)
(setq articles (delq (car art) articles)))
(setq art (cdr art))))
(let ((arts articles)
art)
(while (setq art (pop arts))
(when (not (equal
(nth 5 (file-attributes
(concat dir (int-to-string (car art)))))
(cdr art)))
(setq articles (delq art articles))
(push (car art) new))))
(setq articles
(nconc articles
(mapcar
(lambda (art)
(cons art
(nth 5 (file-attributes
(concat dir (int-to-string art))))))
new)))
(when new
(gnus-make-articles-unread
(gnus-group-prefixed-name group (list 'nnmh ""))
(setq new (sort new '<))))
(setq articles (sort articles (lambda (art1 art2)
(> (car art1) (car art2)))))
(with-temp-file nnmh-file
(insert ";; Gnus article active file for " group "\n\n")
(insert "(setq nnmh-newsgroup-articles '")
(gnus-prin1 articles)
(insert ")\n"))))
(defun nnmh-deletable-article-p (group article)
"Say whether ARTICLE in GROUP can be deleted."
(let ((path (concat nnmh-current-directory (int-to-string article))))
(and (file-writable-p path)
(or
(not (eq (cdr (nth 1 (assoc group nnmh-group-alist)))
article))
nnmh-allow-delete-final))))
(provide 'nnmh)