(require 'tramp)
(eval-when-compile
(require 'cl)
(require 'custom)
(or (>= emacs-major-version 20)
(load "cl-seq")))
(defun tramp-disable-ange-ftp ()
"Turn Ange-FTP off.
This is useful for unified remoting. See
`tramp-file-name-structure-unified' and
`tramp-file-name-structure-separate' for details. Requests suitable
for Ange-FTP will be forwarded to Ange-FTP. Also see the variables
`tramp-ftp-method', `tramp-default-method', and
`tramp-default-method-alist'.
This function is not needed in Emacsen which include Tramp, but is
present for backward compatibility."
(let ((a1 (rassq 'ange-ftp-hook-function file-name-handler-alist))
(a2 (rassq 'ange-ftp-completion-hook-function file-name-handler-alist)))
(setq file-name-handler-alist
(delete a1 (delete a2 file-name-handler-alist)))))
(eval-after-load "ange-ftp"
'(when (functionp 'tramp-disable-ange-ftp)
(tramp-disable-ange-ftp)))
(defun tramp-ftp-enable-ange-ftp ()
(or (assoc "^/[^/:]*[^/:.]:" file-name-handler-alist)
(setq file-name-handler-alist
(cons '("^/[^/:]*[^/:.]:" . ange-ftp-hook-function)
file-name-handler-alist)))
(or (assoc "^/[^/:]*\\'" file-name-handler-alist)
(setq file-name-handler-alist
(cons '("^/[^/:]*\\'" . ange-ftp-completion-hook-function)
file-name-handler-alist)))
(and (memq system-type '(ms-dos windows-nt))
(or (assoc "^[a-zA-Z]:/[^/:]*\\'" file-name-handler-alist)
(setq file-name-handler-alist
(cons '("^[a-zA-Z]:/[^/:]*\\'" .
ange-ftp-completion-hook-function)
file-name-handler-alist)))))
(add-hook 'tramp-ftp-unload-hook 'tramp-ftp-enable-ange-ftp)
(defcustom tramp-ftp-method "ftp"
"*When this method name is used, forward all calls to Ange-FTP."
:group 'tramp
:type 'string)
(add-to-list 'tramp-methods (cons tramp-ftp-method nil))
(add-to-list 'tramp-default-method-alist
(list "\\`ftp\\." "" tramp-ftp-method))
(add-to-list 'tramp-default-method-alist
(list "" "\\`\\(anonymous\\|ftp\\)\\'" tramp-ftp-method))
(unless (memq system-type '(windows-nt))
(tramp-set-completion-function
tramp-ftp-method
'((tramp-parse-netrc "~/.netrc"))))
(defun tramp-ftp-file-name-handler (operation &rest args)
"Invoke the Ange-FTP handler for OPERATION.
First arg specifies the OPERATION, second arg is a list of arguments to
pass to the OPERATION."
(save-match-data
(or (boundp 'ange-ftp-name-format)
(require 'ange-ftp))
(let ((ange-ftp-name-format
(list (nth 0 tramp-file-name-structure)
(nth 3 tramp-file-name-structure)
(nth 2 tramp-file-name-structure)
(nth 4 tramp-file-name-structure)))
(ange-ftp-ftp-name-arg "")
(ange-ftp-ftp-name-res nil))
(cond
((memq operation '(file-directory-p file-exists-p))
(apply 'ange-ftp-hook-function operation args))
(t (let* ((inhibit-file-name-handlers
(list 'tramp-file-name-handler
'tramp-completion-file-name-handler
(and (eq inhibit-file-name-operation operation)
inhibit-file-name-handlers)))
(inhibit-file-name-operation operation))
(apply 'ange-ftp-hook-function operation args)))))))
(defun tramp-ftp-file-name-p (filename)
"Check if it's a filename that should be forwarded to Ange-FTP."
(let ((v (tramp-dissect-file-name filename)))
(string=
(tramp-find-method
(tramp-file-name-multi-method v)
(tramp-file-name-method v)
(tramp-file-name-user v)
(tramp-file-name-host v))
tramp-ftp-method)))
(add-to-list 'tramp-foreign-file-name-handler-alist
(cons 'tramp-ftp-file-name-p 'tramp-ftp-file-name-handler))
(provide 'tramp-ftp)