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121 lines
4.7 KiB
121 lines
4.7 KiB
(require 'slime)
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(require 'tramp)
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(eval-when-compile (require 'cl)) ; lexical-let
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(define-slime-contrib slime-tramp
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"Filename translations for tramp"
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(:authors "Marco Baringer <mb@bese.it>")
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(:license "GPL")
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(:on-load
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(setq slime-to-lisp-filename-function #'slime-tramp-to-lisp-filename)
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(setq slime-from-lisp-filename-function #'slime-tramp-from-lisp-filename)))
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(defcustom slime-filename-translations nil
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"Assoc list of hostnames and filename translation functions.
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Each element is of the form (HOSTNAME-REGEXP TO-LISP FROM-LISP).
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HOSTNAME-REGEXP is a regexp which is applied to the connection's
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slime-machine-instance. If HOSTNAME-REGEXP maches then the
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corresponding TO-LISP and FROM-LISP functions will be used to
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translate emacs filenames and lisp filenames.
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TO-LISP will be passed the filename of an emacs buffer and must
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return a string which the underlying lisp understandas as a
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pathname. FROM-LISP will be passed a pathname as returned by the
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underlying lisp and must return something that emacs will
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understand as a filename (this string will be passed to
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find-file).
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This list will be traversed in order, so multiple matching
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regexps are possible.
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Example:
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Assuming you run emacs locally and connect to slime running on
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the machine 'soren' and you can connect with the username
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'animaliter':
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(push (list \"^soren$\"
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(lambda (emacs-filename)
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(subseq emacs-filename (length \"/ssh:animaliter@soren:\")))
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(lambda (lisp-filename)
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(concat \"/ssh:animaliter@soren:\" lisp-filename)))
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slime-filename-translations)
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See also `slime-create-filename-translator'."
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:type '(repeat (list :tag "Host description"
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(regexp :tag "Hostname regexp")
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(function :tag "To lisp function")
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(function :tag "From lisp function")))
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:group 'slime-lisp)
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(defun slime-find-filename-translators (hostname)
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(cond ((cdr (cl-assoc-if (lambda (regexp) (string-match regexp hostname))
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slime-filename-translations)))
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(t (list #'identity #'identity))))
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(defun slime-make-tramp-file-name (username remote-host lisp-filename)
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"Tramp compatability function.
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Handles the signature of `tramp-make-tramp-file-name' changing
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over time."
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(cond
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((>= emacs-major-version 26)
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;; Emacs 26 requires the method to be provided and the signature of
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;; `tramp-make-tramp-file-name' has changed.
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(tramp-make-tramp-file-name (tramp-find-method nil username remote-host)
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username
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nil
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remote-host
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nil
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lisp-filename))
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((boundp 'tramp-multi-methods)
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(tramp-make-tramp-file-name nil nil
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username
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remote-host
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lisp-filename))
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(t
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(tramp-make-tramp-file-name nil
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username
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remote-host
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lisp-filename))))
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(cl-defun slime-create-filename-translator (&key machine-instance
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remote-host
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username)
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"Creates a three element list suitable for push'ing onto
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slime-filename-translations which uses Tramp to load files on
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hostname using username. MACHINE-INSTANCE is a required
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parameter, REMOTE-HOST defaults to MACHINE-INSTANCE and USERNAME
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defaults to (user-login-name).
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MACHINE-INSTANCE is the value returned by slime-machine-instance,
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which is just the value returned by cl:machine-instance on the
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remote lisp. REMOTE-HOST is the fully qualified domain name (or
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just the IP) of the remote machine. USERNAME is the username we
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should login with.
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The functions created here expect your tramp-default-method or
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tramp-default-method-alist to be setup correctly."
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(lexical-let ((remote-host (or remote-host machine-instance))
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(username (or username (user-login-name))))
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(list (concat "^" machine-instance "$")
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(lambda (emacs-filename)
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(tramp-file-name-localname
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(tramp-dissect-file-name emacs-filename)))
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`(lambda (lisp-filename)
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(slime-make-tramp-file-name
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,username
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,remote-host
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lisp-filename)))))
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(defun slime-tramp-to-lisp-filename (filename)
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(funcall (if (slime-connected-p)
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(first (slime-find-filename-translators (slime-machine-instance)))
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'identity)
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(expand-file-name filename)))
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(defun slime-tramp-from-lisp-filename (filename)
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(funcall (second (slime-find-filename-translators (slime-machine-instance)))
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filename))
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(provide 'slime-tramp)
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