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c2f3710a78
Initially this file provides one main function
notmuch-query-get-threads, which takes a set of search terms, and
returns a parsed set of matching threads as a lisp data structure.
A set of notmuch-query-map-* functions are provided to help map
functions over the data structure.
The function notmuch-query-get-message-ids uses this machinery to get
the set of message-ids matching a query.
Edited-by: Carl Worth <cworth@cworth.org>: Change comment syntax,
(";;" rather than ";" to make emacs-lisp mode happy), and eliminate
some excess whitespace, as suggested by David Edmonson.
81 lines
2.8 KiB
EmacsLisp
81 lines
2.8 KiB
EmacsLisp
;; notmuch-query.el --- provide an emacs api to query notmuch
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;;
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;; Copyright © David Bremner
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;;
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;; This file is part of Notmuch.
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;;
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;; Notmuch is free software: you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;;
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;; Notmuch is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with Notmuch. If not, see <http://www.gnu.org/licenses/>.
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;;
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;; Authors: David Bremner <david@tethera.net>
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(require 'notmuch-lib)
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(require 'json)
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(defun notmuch-query-get-threads (search-terms &rest options)
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"Return a list of threads of messages matching SEARCH-TERMS.
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A thread is a forest or list of trees. A tree is a two element
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list where the first element is a message, and the second element
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is a possibly empty forest of replies.
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"
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(let ((args (append '("show" "--format=json") search-terms))
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(json-object-type 'plist)
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(json-array-type 'list)
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(json-false 'nil))
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(with-temp-buffer
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(progn
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(apply 'call-process (append (list notmuch-command nil t nil) args))
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(goto-char (point-min))
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(json-read)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Mapping functions across collections of messages.
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(defun notmuch-query-map-aux (mapper function seq)
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"private function to do the actual mapping and flattening"
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(apply 'append
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(mapcar
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(lambda (tree)
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(funcall mapper fn tree))
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seq)))
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(defun notmuch-query-map-threads (fn threads)
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"apply FN to every thread in THREADS. Flatten results to a list.
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See the function notmuch-query-get-threads for more information."
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(notmuch-query-map-aux 'notmuch-query-map-forest fn threads))
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(defun notmuch-query-map-forest (fn forest)
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"apply function to every message in a forest. Flatten results to a list.
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See the function notmuch-query-get-threads for more information.
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"
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(notmuch-query-map-aux 'notmuch-query-map-tree fn forest))
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(defun notmuch-query-map-tree (fn tree)
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"Apply function FN to every message in TREE. Flatten results to a list
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See the function notmuch-query-get-threads for more information."
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(cons (funcall fn (car tree)) (notmuch-query-map-forest fn (cadr tree))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Predefined queries
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(defun notmuch-query-get-message-ids (&rest search-terms)
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"Return a list of message-ids of messages that match SEARCH-TERMS"
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(notmuch-query-map-threads
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(lambda (msg) (plist-get msg :id))
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(notmuch-query-get-threads search-terms)))
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(provide 'notmuch-query)
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