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socyl-backend.el
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socyl-backend.el
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;;; socyl-backend.el --- Socyl backend
;; Copyright (C) 2016, 2017 Nicolas Lamirault <[email protected]>
;; 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 2
;; 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, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
;; 02110-1301, USA.
;;; Commentary:
;;; Code:
(require 'cl-lib)
(defvar socyl-backends '()
"List of available search backends.")
(defvar socyl-backend nil
"The currently search backend.")
(defmacro socyl--define-backend (name &rest options)
"Macro which define a new search backend.
`NAME' is for display
`OPTIONS' specify backend arguments."
(let* ((search (plist-get options :search)))
`(progn
(add-to-list 'socyl-backends
(cons ',name
(list (cons 'search ,search)))))))
(defun socyl--get-backend ()
"Search for search backene"
(assoc socyl-backend socyl-backends))
(defmacro socyl--with-backend (backend &rest body)
`(if socyl-backend
(progn
(let ((,backend (socyl--get-backend)))
(if (null (cdr ,backend))
(message "Socyl: error with backend: %s=%s" socyl-backend backend)
,@body)))
(message "Socyl: no backend specify.")))
(defun socyl-backend-search ()
(socyl--with-backend backend
(cl-cdadr backend)))
(defun socyl-search-regexp (regexp directory &optional args)
(interactive
(list (read-from-minibuffer "Socyl search for: " (thing-at-point 'symbol))
(read-directory-name "Directory: ")))
(socyl--with-backend
backend
(funcall (cl-cdadr backend) regexp directory args)))
(provide 'socyl-backend)
;;; socyl-backend.el ends here