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simple-mpc-query.el
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simple-mpc-query.el
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;;; simple-mpc-query.el --- part of simple-mpc
;;
;; Copyright (C) 2015,2016 Joren Van Onder <joren@jvo.sh>
;; Copyright (C) 2020 Sean Farley <sean@farley.io>
;; Author: Joren Van Onder <joren@jvo.sh>
;; Maintainer: Joren Van Onder <joren@jvo.sh>
;; Keywords: multimedia, mpd, mpc
;; Version: 1.0
;; This file is not part of GNU Emacs.
;;
;; 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:
(require 's)
(require 'simple-mpc-mode)
(require 'simple-mpc-vars)
(require 'simple-mpc-utils)
(defvar simple-mpc-query-current-result-alist nil
"A list containing a pair for every result in the latest query.
The list is an association list of the
form (`simple-mpc-playlist-format'. %file%).")
(define-minor-mode simple-mpc-query-mode
"Minor mode for the simple-mpc-query screen.
\\{simple-mpc-query-mode-map}."
:lighter " simple-mpc-query-mode"
:keymap (let ((map (make-sparse-keymap)))
(define-key map "q" 'simple-mpc-query-quit)
(define-key map "S" 'simple-mpc-query-sort)
(define-key map (kbd "<return>") 'simple-mpc-query-add)
(define-key map (kbd "<S-return>") 'simple-mpc-query-add-and-play)
map)
(set (make-local-variable 'require-final-newline) nil))
(defun simple-mpc-query-quit ()
"Quit the current playlist mode and go back to main."
(interactive)
(kill-buffer simple-mpc-query-buffer-name)
(simple-mpc-switch-to-main-buffer))
(defun simple-mpc-query-get-%file%-for-result (result)
"Helper function to get the %file% from RESULT."
(cdr (assoc result simple-mpc-query-current-result-alist)))
(defun simple-mpc-query-build-result-alist (search-type search-query)
"Builds a list according to SEARCH-TYPE and SEARCH-QUERY.
The list is stored in `simple-mpc-query-current-result-alist'."
(setq simple-mpc-query-current-result-alist
(let* ((file-metadata-delimiter "(simple-mpc)")
(query-format (concat (simple-mpc-get-playlist-format) file-metadata-delimiter "%file%" file-metadata-delimiter)))
(mapcar (lambda (mpc-result)
(let* ((matches (s-match (format "^\\(.*\\)%s\\(.*\\)%s" file-metadata-delimiter file-metadata-delimiter) mpc-result))
(full-match (nth 0 matches))
(user-specified-format (nth 1 matches))
(file (nth 2 matches)))
(cons user-specified-format file)))
(split-string
(simple-mpc-format-as-table (simple-mpc-call-mpc-string
(list "--format" query-format "search" search-type search-query)))
"\n" t)))))
(defun simple-mpc-query (search-type search-query)
"Perform an mpc search.
SEARCH-TYPE is a tag type, SEARCH-QUERY is the actual query."
(interactive
(list
(completing-read "Search type: " '("artist" "album" "title" "track"
"name" "genre" "date" "composer"
"performer" "comment" "disc" "filename"
"any") nil t)
(read-string "Query: ")))
(simple-mpc-query-build-result-alist search-type search-query)
(let ((buf (get-buffer-create simple-mpc-query-buffer-name)))
(with-current-buffer buf
(read-only-mode -1)
(erase-buffer)
(insert (mapconcat (lambda (result) (car result)) simple-mpc-query-current-result-alist "\n"))
(goto-char (point-max))
(goto-char (point-min))
(simple-mpc-mode)
(simple-mpc-query-mode)
(hl-line-mode)
(switch-to-buffer buf))))
(defun simple-mpc-query-add-and-play ()
"Wrapper for (`simple-mpc-query-add' t)."
(interactive)
(simple-mpc-query-add t))
(defun simple-mpc-query-add (&optional play)
"Add the song on the current line to the current playlist.
When a region is active, add all the songs in the region to the
current playlist. When PLAY is non-nil, immediately play them."
(interactive)
(let ((playlist-length 0))
(when (simple-mpc-extract-status 'playlist-length)
(setq playlist-length (string-to-number (simple-mpc-extract-status 'playlist-length))))
(if (use-region-p)
(let ((first-line-region (line-number-at-pos (region-beginning)))
(last-line-region (if (eq (region-end) (point-max))
(line-number-at-pos (region-end))
(1- (line-number-at-pos (region-end))))) ; usually point is on the next line so 1-
(beginning-first-line-region)
(end-last-line-region))
(save-excursion
(simple-mpc-goto-line first-line-region)
(setq beginning-first-line-region (line-beginning-position))
(simple-mpc-goto-line last-line-region)
(setq end-last-line-region (line-end-position)))
(simple-mpc-call-mpc nil (cons "add" (mapcar (lambda (result)
(simple-mpc-query-get-%file%-for-result result))
(split-string (buffer-substring-no-properties beginning-first-line-region
end-last-line-region)
"\n" t))))
(deactivate-mark))
(simple-mpc-call-mpc nil (list "add" (simple-mpc-query-get-%file%-for-result
(buffer-substring-no-properties (line-beginning-position) (line-end-position)))))
(forward-line))
(if play
(simple-mpc-call-mpc nil (list "play" (number-to-string (1+ playlist-length)))))))
(defun simple-mpc-query-sort (&optional reverse)
"Sort all query results alphabetically.
REVERSE means descending order."
(interactive)
(read-only-mode -1)
(sort-lines reverse (point-min) (point-max))
(read-only-mode 1))
(provide 'simple-mpc-query)
;;; simple-mpc-query.el ends here