119 lines
4.0 KiB
EmacsLisp
119 lines
4.0 KiB
EmacsLisp
;;; sxiv.el --- Run the sxiv image viewer -*- lexical-binding: t; -*-
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;; Author: contrapunctus <xmpp:contrapunctus@jabber.fr>
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;; Maintainer: contrapunctus <xmpp:contrapunctus@jabber.fr>
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;; Keywords: multimedia
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;; Homepage: https://notabug.org/contrapunctus/sxiv.el/src/master/sxiv.el
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;; Package-Requires: ((dash "2.16.0") (emacs "25.1"))
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;; Version: 0.2.0
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;;; Commentary:
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;;
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(require 'dash)
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;;; Code:
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(defgroup sxiv nil
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"Run the Simple X Image Viewer."
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:group 'multimedia)
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(defcustom sxiv-arguments '("-a" "-f" "-o")
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"Arguments to be passed to the sxiv process.
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It must contain \"-o\" for marking in Dired buffers to function."
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:type '(repeat string))
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(defcustom sxiv-exclude-strings '()
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"Exclude files whose paths match these strings."
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:type '(repeat string))
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(defvar sxiv--directory nil
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"Directory `sxiv' was called from.
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Used by `sxiv-filter' to know where to mark files.")
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(defun sxiv-dired-marked-files-p ()
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"Return t if there are marked files in the current Dired buffer.
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With no marked files, or if not in a Dired buffer, return nil."
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(if (equal major-mode 'dired-mode)
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(if (save-excursion
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(goto-char (point-min))
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(re-search-forward dired-re-mark nil t))
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t
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nil)
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nil))
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(defun sxiv-filter (_process output)
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"Open a `dired' buffer and mark any files marked by the user in `sxiv'.
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Used as process filter for `sxiv'.
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OUTPUT is the output of the sxiv process as a string."
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(find-file sxiv--directory)
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(--> output
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(split-string it "\n")
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(-drop-last 1 it)
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(sxiv-dired-mark-files it)))
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(defun sxiv-dired-mark-files (files)
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"Mark FILES in the current (dired) buffer."
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(dired-mark-if
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(and (not (looking-at-p dired-re-dot))
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(not (eolp))
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(let ((fn (dired-get-filename t t)))
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(and fn (--find (equal fn it) files))))
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"file"))
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(defun sxiv (&optional prefix)
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"Run sxiv(1), the Simple X Image Viewer.
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By default, when run in a Dired buffer, open all files in the
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current directory. Files marked in sxiv will be marked in Dired.
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If run from a Dired buffer with marked files, open only those
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files.
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With prefix argument PREFIX, or when only provided directories,
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run recursively (-r).
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If run from a text file containing one file name per line, open
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the files listed."
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(interactive "P")
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(let* ((paths (cond ((sxiv-dired-marked-files-p)
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(dired-get-marked-files))
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((derived-mode-p 'text-mode)
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(--> (buffer-substring-no-properties (point-min)
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(point-max))
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(split-string it "\n")))
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(t (directory-files default-directory))))
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(paths (--remove (or (equal it ".")
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(equal it "..")
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(-find (lambda (exclude)
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(string-match-p exclude it))
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sxiv-exclude-strings))
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paths))
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;; recurse with prefix arg, or if every path is a directory
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(recurse (or prefix
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(-every? #'file-directory-p paths)))
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;; remove directories if not running recursively
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(paths (if recurse
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paths
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(seq-remove #'file-directory-p paths)))
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(recurse (if recurse "-r" ""))
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(proc (make-process :name "sxiv"
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:buffer "sxiv"
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:command
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(append '("sxiv")
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sxiv-arguments
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`(,recurse "--")
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paths)
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:connection-type 'pipe
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:stderr "sxiv-errors")))
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(setq sxiv--directory default-directory)
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(set-process-filter proc #'sxiv-filter)))
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;; Local Variables:
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;; nameless-current-name: "sxiv"
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;; End:
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(provide 'sxiv)
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;;; sxiv.el ends here
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