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;;; init-tramp.el --- configure tramp -*- lexical-binding:t -*-
;;; Commentary:
;;; Code:
(defun mpolden/sudo-prefix-p (prefix)
"Return non-nil if PREFIX is a sudo prefix."
(member prefix '("/sudo" "/sudo:")))
(defun mpolden/ssh-prefix-p (prefix)
"Return non-nil if PREFIX is a ssh prefix."
(string-equal prefix "/ssh"))
(defun mpolden/sudo-file-name (filename)
"Return FILENAME with a sudo prefix.
If FILENAME already has a sudo prefix, do nothing. If FILENAME is
accessed over SSH, prefix it with \"/sudo:\". Otherwise, assume
FILENAME is a local path and prefix it with \"/sudo::\"."
(let* ((splitname (split-string filename ":"))
(prefix (car splitname)))
(if (mpolden/sudo-prefix-p prefix)
filename
(let* ((ssh (mpolden/ssh-prefix-p prefix))
(sudo-prefix (if ssh "/sudo" "/sudo:"))
(components (if ssh (cdr splitname) splitname)))
(mapconcat 'identity (cons sudo-prefix components) ":")))))
(defun mpolden/sudo-find-file (&optional arg)
"Find file and open it with sudo.
With a prefix ARG prompt edit currently visited file using sudo."
(interactive "P")
(if arg
(find-alternate-file (mpolden/sudo-file-name buffer-file-name))
(find-file (mpolden/sudo-file-name (read-file-name "Find file with sudo: ")))))
(defun mpolden/sudo-current-file ()
"Open current file with sudo."
(interactive)
(mpolden/sudo-find-file t))
(use-package tramp
:bind
(("C-x +" . mpolden/sudo-find-file)
("C-x !" . mpolden/sudo-current-file))
:config
;; make sudo:remote-host work as expected
(add-to-list 'tramp-default-proxies-alist '(nil "\\`root\\'" "/ssh:%h:"))
(add-to-list 'tramp-default-proxies-alist
'((regexp-quote (system-name)) nil nil))
;; use path configured by remote host
(add-to-list 'tramp-remote-path 'tramp-own-remote-path))
(provide 'init-tramp)
;;; init-tramp.el ends here
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