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;;; sx-tag.el --- retrieving list of tags and handling tags -*- lexical-binding: t; -*-
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(eval-when-compile
'(require 'cl-lib))
(require 'sx)
(require 'sx-method)
;;; Getting the list from a site
(defconst sx-tag-filter
(sx-filter-from-nil
(tag.name
tag.synonyms))
"Filter used when querying tags.")
(defun sx-tag--get-all (site &optional no-synonyms)
"Retrieve all tags for SITE.
If NO-SYNONYMS is non-nil, don't return synonyms."
(cl-reduce
(lambda (so-far tag)
(let-alist tag
(cons .name
(if no-synonyms so-far
(append .synonyms so-far)))))
(sx-method-call 'tags
:get-all t
:filter sx-tag-filter
:site site)
:initial-value nil))
(defun sx-tag--get-some-tags-containing (site string)
"Return at most 100 tags for SITE containing STRING.
Returns an array."
(sx-method-call 'tags
:auth nil
:filter sx-tag-filter
:site site
:keywords `((inname . ,string))))
(defun sx-tag--get-some-tag-names-containing (site string)
"Return at most 100 tag names for SITE containing STRING.
Returns a list."
(mapcar (lambda (x) (cdr (assoc 'name x)))
(sx-tag--get-some-tags-containing site string)))
;;; Check tag validity
(defun sx-tag--invalid-name-p (site tags)
"Nil if TAGS exist in SITE.
TAGS can be a string (the tag name) or a list of strings.
Fails if TAGS is a list with more than 100 items.
Return the list of invalid tags in TAGS."
(and (listp tags) (> (length tags) 100)
(error "Invalid argument. TAG has more than 100 items"))
(let ((result
(mapcar
(lambda (x) (cdr (assoc 'name x)))
(sx-method-call 'tags
:id (sx--thing-as-string tags)
:submethod 'info
:auth nil
:filter sx-tag-filter
:site site))))
(cl-remove-if (lambda (x) (member x result)) tags)))
(provide 'sx-tag)
;;; sx-tag.el ends here
;; Local Variables:
;; indent-tabs-mode: nil
;; End:
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