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;; -*- lexical-binding: t -*-
;; This file is part of el-exiftool.
;; el-exiftool 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.
;; el-exiftool 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 el-exiftool. If not, see <http://www.gnu.org/licenses/>.
(require 'subr)
(require 'subr-x)
(require 'cl)
(defun el-exiftool--tq-sync-query (tq question regexp &optional closure)
(let ((response))
(tq-enqueue tq question regexp closure
(lambda (closure answer) (setq response answer)))
(while (not response)
(accept-process-output))
response))
(defun el-exiftool-run ()
(when-let (exiftool (get-process "exiftool"))
(delete-process exiftool))
(start-process "exiftool" "exiftool" "exiftool" "-stay_open" "True" "-@" "-"))
(let ((tq (tq-create (el-exiftool-run))))
(defun el-exiftool-command (&rest args)
(string-trim
(let ((suffix "{ready}\n"))
(string-remove-suffix
suffix (el-exiftool--tq-sync-query
tq (concat (string-join args "\n")
"\n-execute\n")
suffix))))))
(defun el-exiftool-read (filepath &rest tags)
(mapcar
(lambda (line)
(apply 'cons (split-string line ": ")))
(split-string
(apply 'el-exiftool-command
"-s" "-s"
(append
(mapcar (apply-partially 'format "-%s") tags)
(list filepath)))
"\n+")))
(defun el-exiftool-copy (source destination)
(el-exiftool-command "-overwrite_original"
"-tagsFromFile" source
"-all:all" destination)
(message "Tags from %s copied to %s" source destination)
destination)
(defun el-exiftool-write (filepath &rest tag-value-alist)
(apply 'el-exiftool-command
"-m" "-overwrite_original"
(append
(mapcar
(cl-function
(lambda ((tag . value))
(format "-%s=%s" tag value)))
tag-value-alist)
(list filepath))))
(provide 'el-exiftool)
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