diff options
Diffstat (limited to 'lib/net/nnnm.el')
| -rw-r--r-- | lib/net/nnnm.el | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/lib/net/nnnm.el b/lib/net/nnnm.el new file mode 100644 index 0000000..173c975 --- /dev/null +++ b/lib/net/nnnm.el @@ -0,0 +1,269 @@ +;;; nnnm.el --- Gnus backend for notmuch -*- lexical-binding: t; -*- + +;; Copyright (C) 2021 jao + +;; Author: jao <mail@jao.io> +;; Keywords: mail + +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see <https://www.gnu.org/licenses/>. + +;;; Commentary: + +;; A Gnus mail backend using notmuch. + +;;; Code: + +(require 'gnus) +(require 'nnheader) +(require 'nnmail) +(require 'nnoo) +(require 'notmuch) + +(nnoo-declare nnnm) + +(defvoo nnnm-directory message-directory + "Spool directory for the nnnm mail backend.") + +(defvoo nnnm-inhibit-expiry nil + "If non-nil, inhibit expiry.") + +(defvoo nnnm-saved-searches nil) + + + +;;; Interface functions. + +(nnoo-define-basics nnnm) + +(deffoo nnnm-open-server (server &optional defs) + (nnoo-change-server 'nnnm server defs) + (setq nnnm-article-files nil) + (cond + ((not (file-exists-p nnnm-directory)) + (nnnm-close-server) + (nnheader-report 'nnnm "Directory doesn't exist: %s" nnnm-directory)) + ((not (file-directory-p (file-truename nnnm-directory))) + (nnnm-close-server) + (nnheader-report 'nnnm "Not a directory: %s" nnnm-directory)) + (t + (nnheader-report 'nnnm "Opened server %s using directory %s" + server nnnm-directory) + t))) + +(deffoo nnnm-close-server (server) + (setq nnnm-article-files nil)) + +(deffoo nnnm-request-regenerate (server) + (setq nnnm-article-files nil) + (nnnm--tag "*" "-nnnm") + t) + +(deffoo nnnm-request-list (&optional _server) + (with-current-buffer nntp-server-buffer + (erase-buffer) + (dolist (s nnnm-saved-searches) + (when-let (q (plist-get s :query)) + (let ((name (plist-get s :name)) + (total (nnnm--count q))) + (insert (format "%s %d 1 y\n" name total)))))) + t) + +(deffoo nnnm-retrieve-headers (sequence &optional group server _fetch-old) + (message "retrieving headers for sequence %s" sequence) + (when (nnnm-set-group-context group server) + (with-current-buffer nntp-server-buffer + (erase-buffer) + (let* ((file nil) + (number (length sequence)) + (count 0) + (file-name-coding-system nnmail-pathname-coding-system) + beg article) + (if (stringp (car sequence)) + 'headers + (while sequence + (setq article (car sequence)) + (setq file (nnnm-article-to-file article group)) + (when (and file + (file-exists-p file) + (not (file-directory-p file))) + (insert (format "221 %d Article retrieved.\n" article)) + (setq beg (point)) + (nnheader-insert-head file) + (goto-char beg) + (if (re-search-forward "\n\r?\n" nil t) + (forward-char -1) + (goto-char (point-max)) + (insert "\n\n")) + (insert ".\n") + (delete-region (point) (point-max))) + (setq sequence (cdr sequence)) + (setq count (1+ count)) + (and (numberp nnmail-large-newsgroup) + (> number nnmail-large-newsgroup) + (zerop (% count 20)) + (nnheader-message 6 "nnnm: Receiving headers... %d%%" + (floor (* count 100.0) number)))) + (and (numberp nnmail-large-newsgroup) + (> number nnmail-large-newsgroup) + (nnheader-message 6 "nnml: Receiving headers...done")) + (nnheader-fold-continuation-lines) + 'headers))))) + +(deffoo nnnm-request-article (id &optional group _server buffer) + ;; (nnnm-set-group-context group server) + (let* ((nntp-server-buffer (or buffer nntp-server-buffer)) + (file-name-coding-system nnmail-pathname-coding-system) + (d (nnnm--article-data id group)) + (id (car d)) + (file (or (cadr d) (nnnm--find-message-file id)))) + (cond + ((not file) + (nnheader-report 'nnnm "No such article: %s" id)) + ((not (file-exists-p file)) + (nnheader-report 'nnnm "No such file: %s" file)) + ((file-directory-p file) + (nnheader-report 'nnnm "File is a directory: %s" file)) + ((not (save-excursion (nnmail-find-file file))) + (nnheader-report 'nnnm "Couldn't read file: %s" file)) + (t + (nnnm--tag id "+nnnm") + (nnheader-report 'nnnm "Article %s retrieved" id) + (cons group id))))) + +(deffoo nnnm-request-expire-articles (articles group &optional _server _force) + (let ((excluded) (ids)) + (dolist (a articles) + (if-let (id (car (nnnm--article-data a group))) + (push id ids) + (push a excluded))) + (when ids + (nnnm--tag (mapconcat #'identity ids " OR ") "+deleted +nnnm")) + excluded)) + +;; (deffoo nnnm-request-move-article +;; (article group server accept-form &optional last _move-is-internal) +;; (error "Not implemented yet")) + +(deffoo nnnm-request-group (group &optional server _dont-check _info) + (message "opening %s" group) + (if (nnnm-set-group-context group server) + (let ((n (length (cdr (assoc group nnnm-article-files))))) + (message "we found here %s articles" n) + (with-current-buffer nntp-server-buffer + (erase-buffer) + (nnheader-insert "211 %d %d %d %s\n" n 1 n group) + n)) + (message "we didn't find anything!!") + (nnheader-report 'nnnm "Invalid group"))) + +(deffoo nnnm-request-group-scan (group &optional server _info) + (nnnm-set-group-context group server)) + +(deffoo nnnm-request-scan (&optional group server) + (nnnm-set-group-context group server)) + +(deffoo nnnm-close-group (_group &optional _server) + t) + +(deffoo nnnm-request-create-group (group &optional _server _args) + (let ((query (read-string "Query: "))) + (add-to-list 'nnnm-saved-searches `(:name ,group :query ,query)))) + +(deffoo nnnm-request-newgroups (_date &optional server) + (nnnm-request-list server)) + +;; (deffoo nnnm-request-rename-group (group new-name &optional _server) +;; (error "Not implemented yet")) + + + +(defvar nnnm-article-files nil) + +(defun nnnm--find-query (name) + (when-let (s (seq-find (lambda (s) (string= (plist-get s :name) name)) + nnnm-saved-searches)) + (plist-get s :query))) + +(defun nnnm--find-message-file (id) + (car (split-string + (shell-command-to-string + (format "notmuch search --output=files %s" + (if (string-prefix-p "id:" id) id (concat "id:" id))))))) + +(defun nnnm--article-data (article group) + (cond ((stringp article) (list article)) + ((numberp article) + (when-let (data (cdr (assoc group nnnm-article-files))) + (elt data (1- article)))))) + +(defun nnnm-article-to-file (article group) + (when-let (d (nnnm--article-data article group)) + (or (cadr d) (nnnm--find-message-file (car d))))) + +(defun nnnm--count (query &optional context) + (let ((cmd (format "notmuch count -- '(%s)%s'" + query + (if context (concat " AND " context) "")))) + (string-to-number (shell-command-to-string cmd)))) + +(defun nnnm--search (query &optional context) + (let ((cmd (format "notmuch search --sort=oldest-first --output=messages -- %s%s" + (shell-quote-argument (format "(%s)" query)) + (if context (concat " AND " context) "")))) + (split-string (shell-command-to-string cmd)))) + +(defun nnnm--tag (query tags) + (let ((cmd (format "notmuch tag %s -- '(%s)'" tags query))) + (shell-command-to-string cmd))) + +(defun nnnm--ids-query (ids) (mapconcat #'identity ids " OR ")) + +(defun nnnm--init-data (full-group query) + (nnnm--tag (concat query " AND NOT tag:new AND not tag:nnnm") + "+nnnm") + (let* ((ids (nnnm--search query "tag:nnnm")) + (info (gnus-get-info full-group)) + (read (when (> (length ids) 0) (list (cons 1 (length ids))))) + (marks (list (cons 'seen read)))) + (gnus-info-set-marks info marks) + (setf (gnus-info-read info) read) + (gnus-set-info full-group info) + (message "group %s - %s" full-group (gnus-get-info full-group)) + (mapcar #'list ids))) + +(defun nnnm--set-group-data (group data) + (setf (alist-get group nnnm-article-files nil t #'string=) data)) + +(defun nnnm-set-group-context (group &optional server) + (when (and server (not (nnnm-server-opened server))) + (nnnm-open-server server)) + (when-let (query (nnnm--find-query group)) + (setq nnnm-current-group group) + (let* ((full-group (gnus-group-prefixed-name group `(nnnm ,server))) + (data (or (cdr (assoc group nnnm-article-files)) + (nnnm--init-data full-group query))) + (ids (nnnm--search query "tag:new AND NOT tag:nnnm")) + (new-data (mapcar (lambda (id) + (list id (nnnm--find-message-file id))) + ids))) + (when (> (length ids) 0) + (nnnm--tag (nnnm--ids-query ids) "-new")) + (nnnm--set-group-data group (append data new-data)) + (gnus-set-active (gnus-group-prefixed-name group `(nnnm ,server)) + (cons 1 (+ (length new-data) (length data))))))) + + + +(provide 'nnnm) +;;; nnnm.el ends here |