Function: vc-dir-refresh

vc-dir-refresh is an interactive and byte-compiled function defined in vc-dir.el.gz.

Signature

(vc-dir-refresh)

Documentation

Refresh the contents of the *VC-dir* buffer.

Throw an error if another update process is in progress.

Key Bindings

Source Code

;; Defined in /usr/src/emacs/lisp/vc/vc-dir.el.gz
(defun vc-dir-refresh ()
  "Refresh the contents of the *VC-dir* buffer.
Throw an error if another update process is in progress."
  (interactive)
  (if (vc-dir-busy)
      (error "Another update process is in progress, cannot run two at a time")
    (let ((def-dir default-directory)
	  (backend vc-dir-backend))
      (vc-set-mode-line-busy-indicator)
      ;; Call the `dir-status' backend function.
      ;; `dir-status' is supposed to be asynchronous.
      ;; It should compute the results, and then call the function
      ;; passed as an argument in order to update the vc-dir buffer
      ;; with the results.

      ;; Create a buffer that can be used by `dir-status' and call
      ;; `dir-status' with this buffer as the current buffer.  Use
      ;; `vc-dir-process-buffer' to remember this buffer, so that
      ;; it can be used later to kill the update process in case it
      ;; takes too long.
      (unless (buffer-live-p vc-dir-process-buffer)
        (setq vc-dir-process-buffer
              (generate-new-buffer (format " *VC-%s* tmp status" backend))))
      ;; set the needs-update flag on all non-directory entries
      (ewoc-map (lambda (info)
		  (unless (vc-dir-fileinfo->directory info)
		    (setf (vc-dir-fileinfo->needs-update info) t) nil))
                vc-ewoc)
      ;; Bzr has serious locking problems, so setup the headers first (this is
      ;; synchronous) rather than doing it while dir-status is running.
      (ewoc-set-hf vc-ewoc (vc-dir-headers backend def-dir) "")
      (let ((buffer (current-buffer)))
        (with-current-buffer vc-dir-process-buffer
          (setq default-directory def-dir)
          (erase-buffer)
          (vc-call-backend
           backend 'dir-status-files def-dir nil
           (lambda (entries &optional more-to-come)
             ;; ENTRIES is a list of (FILE VC_STATE EXTRA) items.
             ;; If MORE-TO-COME is true, then more updates will come from
             ;; the asynchronous process.
             (with-current-buffer buffer
               (vc-dir-update entries buffer)
               (unless more-to-come
                 (let ((remaining
                        (ewoc-collect
                         vc-ewoc 'vc-dir-fileinfo->needs-update)))
                   (if remaining
                       (vc-dir-refresh-files
                        (mapcar #'vc-dir-fileinfo->name remaining))
                     (setq mode-line-process nil)
                     (run-hooks 'vc-dir-refresh-hook))))))))))))