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;; -*- lexical-binding: t -*-
(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 tag)
(el-exiftool-command
"-s" "-s" "-s" (format "-%s" tag) filepath))
(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)
(cl-defun el-exiftool-write (filepath (tag . value))
(unless (string-blank-p value)
(el-exiftool-command
"-m" "-overwrite_original"
(format "-%s=%s" tag value) filepath)))
(provide 'el-exiftool)
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