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Code Issues Releases Activity

Use destructuring in filenotify backend handlers

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* lisp/filenotify.el (file-notify--callback-inotify)
(file-notify--callback-kqueue, file-notify--callback-w32notify)
(file-notify--callback-gfilenotify, file-notify--callback): Use cl-defun.
This commit is contained in:
Mattias Engdegård 2019-07-20 19:45:51 +02:00
parent 27f25d737c
commit 084e8381a7
1 changed files with 22 additions and 31 deletions
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53
lisp/filenotify.el
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@ -120,10 +120,11 @@ It is nil or a `file-notify--rename' where the cookie can be nil.")
(directory-file-name
(expand-file-name file (file-notify--watch-directory watch))))
(defun file-notify--callback-inotify (event)
(cl-defun file-notify--callback-inotify ((desc actions file
&optional file1-or-cookie))
"Notification callback for inotify."
(file-notify--handle-event
(car event)
desc
(delq nil (mapcar (lambda (action)
(cond
((eq action 'create) 'created)
@ -133,14 +134,14 @@ It is nil or a `file-notify--rename' where the cookie can be nil.")
((eq action 'moved-from) 'renamed-from)
((eq action 'moved-to) 'renamed-to)
((eq action 'ignored) 'stopped)))
(nth 1 event)))
(nth 2 event)
(nth 3 event)))
actions))
file file1-or-cookie))
(defun file-notify--callback-kqueue (event)
(cl-defun file-notify--callback-kqueue ((desc actions file
&optional file1-or-cookie))
"Notification callback for kqueue."
(file-notify--handle-event
(car event)
desc
(delq nil (mapcar (lambda (action)
(cond
((eq action 'create) 'created)
@ -148,30 +149,26 @@ It is nil or a `file-notify--rename' where the cookie can be nil.")
((memq action '(attrib link)) 'attribute-changed)
((eq action 'delete) 'deleted)
((eq action 'rename) 'renamed)))
(nth 1 event)))
(nth 2 event)
(nth 3 event)))
actions))
file file1-or-cookie))
(defun file-notify--callback-w32notify (event)
(cl-defun file-notify--callback-w32notify ((desc actions file
&optional file1-or-cookie))
"Notification callback for w32notify."
(let ((action (pcase (nth 1 event)
(let ((action (pcase actions
('added 'created)
('modified 'changed)
('removed 'deleted)
('renamed-from 'renamed-from)
('renamed-to 'renamed-to))))
(when action
(file-notify--handle-event
(car event)
(list action)
(nth 2 event)
(nth 3 event)))))
(file-notify--handle-event desc (list action) file file1-or-cookie))))
(defun file-notify--callback-gfilenotify (event)
(cl-defun file-notify--callback-gfilenotify ((desc actions file
&optional file1-or-cookie))
"Notification callback for gfilenotify."
(let ((actions (nth 1 event)))
(file-notify--handle-event
(car event)
desc
(delq nil (mapcar (lambda (action)
(cond
((memq action
@ -179,17 +176,12 @@ It is nil or a `file-notify--rename' where the cookie can be nil.")
action)
((eq action 'moved) 'renamed)))
(if (consp actions) actions (list actions))))
(nth 2 event)
(nth 3 event))))
file file1-or-cookie))
;; Called by file name handlers to deliver a notification.
(defun file-notify-callback (event)
"Handle an EVENT returned from file notification.
EVENT is the cadr of the event in `file-notify-handle-event'
\(DESCRIPTOR ACTIONS FILE [FILE1-OR-COOKIE])."
(let ((actions (nth 1 event)))
(cl-defun file-notify-callback ((desc actions file &optional file1-or-cookie))
"Notification callback for file name handlers."
(file-notify--handle-event
(car event)
desc
;; File name handlers use gfilenotify or inotify actions.
(delq nil (mapcar
(lambda (action)
@ -207,8 +199,7 @@ EVENT is the cadr of the event in `file-notify-handle-event'
((eq action 'moved-to) 'renamed-to)
((eq action 'ignored) 'stopped)))
(if (consp actions) actions (list actions))))
(nth 2 event)
(nth 3 event))))
file file1-or-cookie))
(defun file-notify--call-handler (watch desc action file file1)
"Call the handler of WATCH with the arguments DESC, ACTION, FILE and FILE1."