"i - g: go to a particular menu or item\tfake\tfake\t1"
"i - i/I: info on item under cursor or current page\tfake\tfake\t1"
"i - c/C: copy URL representation of item under cursor or current page\tfake\tfake\t1"
+ "i - a/A: bookmark the item under cursor or current page\tfake\tfake\t1"
+ "i - x/X: remove bookmark for item under cursor or current page\tfake\tfake\t1"
+ "i - B: visit the bookmarks page\tfake\tfake\t1"
"i - r: redraw current page (using cached contents if available)\tfake\tfake\t1"
"i - R: reload current page (regenerates cache)\tfake\tfake\t1"
"i - d: download directory entry under cursor\tfake\tfake\t1"
"i - w: display the raw server response for the current page\tfake\tfake\t1"
"i\tfake\tfake\t1"
- "iPlaces to start exploring Gopherspace:\tfake\tfake\t1"
+ "iWhere to start exploring Gopherspace:\tfake\tfake\t1"
"i\tfake\tfake\t1"
- "1Floodgap Systems Gopher Server\t\tgopher.floodgap.com\t70"
+ "1Floodgap Systems Gopher Server\t/\tgopher.floodgap.com\t70"
"i\tfake\tfake\t1"
"iAlternatively, select the following item and enter some\tfake\tfake\t1"
"isearch terms:\tfake\tfake\t1"
"If non-nil, cache images in memory in the same way as other content."
:type '(boolean))
-(defcustom elpher-start-address nil
- "If nil, the default start directory is shown when Elpher is started.
-Otherwise, a list containing the selector, host and port of a directory to
-use as the start page."
- :type '(list string string integer))
-
(defcustom elpher-use-header t
"If non-nil, display current node information in buffer header."
:type '(boolean))
;; Node
-(defun elpher-make-node (display-string parent address &optional content pos)
+(defun elpher-make-node (display-string parent address)
"Create a node in the gopher page hierarchy.
DISPLAY-STRING records the display string used for the page.
PARENT specifies the parent of the node, and ADDRESS specifies the
-address of the gopher page.
-
-The optional arguments CONTENT and POS can be used to fill the cached
-content and cursor position fields of the node."
- (list display-string parent address content pos))
+address of the gopher page."
+ (list display-string parent address))
(defun elpher-node-display-string (node)
"Retrieve the display string of NODE."
"Retrieve the address of NODE."
(elt node 2))
-(defun elpher-node-content (node)
- "Retrieve the cached content of NODE, or nil if none exists."
- (elt node 3))
+;; Cache
+
+(defvar elpher-content-cache (make-hash-table :test 'equal))
+(defvar elpher-pos-cache (make-hash-table :test 'equal))
-(defun elpher-node-pos (node)
- "Retrieve the cached cursor position for NODE, or nil if none exists."
- (elt node 4))
+(defun elpher-get-cached-content (address)
+ "Retrieve the cached content for ADDRESS, or nil if none exists."
+ (gethash address elpher-content-cache))
-(defun elpher-set-node-content (node content)
- "Set the content cache of NODE to CONTENT."
- (setcar (nthcdr 3 node) content))
+(defun elpher-cache-content (address content)
+ "Set the content cache for ADDRESS to CONTENT."
+ (puthash address content elpher-content-cache))
-(defun elpher-set-node-pos (node pos)
- "Set the cursor position cache of NODE to POS."
- (setcar (nthcdr 4 node) pos))
+(defun elpher-get-cached-pos (address)
+ "Retrieve the cached cursor position for ADDRESS, or nil if none exists."
+ (gethash address elpher-pos-cache))
+
+(defun elpher-cache-pos (address pos)
+ "Set the cursor position cache for ADDRESS to POS."
+ (puthash address pos elpher-pos-cache))
;; Node graph traversal
(defun elpher-reload-current-node ()
"Reload the current node, discarding any existing cached content."
- (elpher-set-node-content elpher-current-node nil)
+ (elpher-cache-content (elpher-node-address elpher-current-node) nil)
(elpher-visit-node elpher-current-node))
(defun elpher-save-pos ()
"Save the current position of point to the current node."
(when elpher-current-node
- (elpher-set-node-pos elpher-current-node (point))))
+ (elpher-cache-pos (elpher-node-address elpher-current-node) (point))))
(defun elpher-restore-pos ()
"Restore the position of point to that cached in the current node."
- (let ((pos (elpher-node-pos elpher-current-node)))
+ (let ((pos (elpher-get-cached-pos (elpher-node-address elpher-current-node))))
(if pos
(goto-char pos)
(goto-char (point-min)))))
(defun elpher-get-index-node ()
"Getter which retrieves the current node contents as an index."
- (let ((content (elpher-node-content elpher-current-node))
- (address (elpher-node-address elpher-current-node)))
+ (let* ((address (elpher-node-address elpher-current-node))
+ (content (elpher-get-cached-content address)))
(if content
(progn
(elpher-with-clean-buffer
(elpher-with-clean-buffer
(elpher-insert-index elpher-selector-string)
(elpher-restore-pos)
- (elpher-set-node-content elpher-current-node
- (buffer-string)))))))))
+ (elpher-cache-content
+ (elpher-node-address elpher-current-node)
+ (buffer-string)))))))))
;; Text retrieval
(defun elpher-get-text-node ()
"Getter which retrieves the current node contents as a text document."
- (let ((content (elpher-node-content elpher-current-node))
- (address (elpher-node-address elpher-current-node)))
+ (let* ((address (elpher-node-address elpher-current-node))
+ (content (elpher-get-cached-content address)))
(if content
(progn
(elpher-with-clean-buffer
(elpher-preprocess-text-response
elpher-selector-string)))
(elpher-restore-pos)
- (elpher-set-node-content elpher-current-node
- (buffer-string))))))))))
+ (elpher-cache-content
+ (elpher-node-address elpher-current-node)
+ (buffer-string))))))))))
;; Image retrieval
(defun elpher-get-image-node ()
"Getter which retrieves the current node contents as an image to view."
- (let ((content (elpher-node-content elpher-current-node))
- (address (elpher-node-address elpher-current-node)))
+ (let* ((address (elpher-node-address elpher-current-node))
+ (content (elpher-get-cached-content address)))
(if content
(progn
(elpher-with-clean-buffer
(insert-image image)
(elpher-restore-pos))
(if elpher-cache-images
- (elpher-set-node-content elpher-current-node
- image)))))))
+ (elpher-cache-content
+ (elpher-node-address elpher-current-node)
+ image)))))))
(elpher-get-node-download)))))
;; Search retrieval
(defun elpher-get-search-node ()
"Getter which submits a search query to the address of the current node."
- (let ((content (elpher-node-content elpher-current-node))
- (address (elpher-node-address elpher-current-node))
- (aborted t))
+ (let* ((address (elpher-node-address elpher-current-node))
+ (content (elpher-get-cached-content address))
+ (aborted t))
(if content
(progn
(elpher-with-clean-buffer
(elpher-with-clean-buffer
(elpher-insert-index elpher-selector-string))
(goto-char (point-min))
- (elpher-set-node-content elpher-current-node
- (buffer-string))))))
+ (elpher-cache-content
+ (elpher-node-address elpher-current-node)
+ (buffer-string))))))
(if aborted
(elpher-visit-parent-node))))))
(defun elpher-get-node-raw ()
"Getter which retrieves the raw server response for the current node."
- (let* ((content (elpher-node-content elpher-current-node))
- (address (elpher-node-address elpher-current-node)))
+ (let ((address (elpher-node-address elpher-current-node)))
(elpher-with-clean-buffer
(insert "LOADING RAW SERVER RESPONSE..."))
(if address
(elpher-visit-parent-node)
(telnet host port)))
-;; Start node retrieval
+;; Start page node retrieval
(defun elpher-get-start-node ()
"Getter which displays the start page."
(elpher-with-clean-buffer
(elpher-insert-index elpher-start-index)
(elpher-restore-pos)))
+
+;; Bookmarks page node retrieval
+
+(defun elpher-get-bookmarks-node ()
+ "Getter which loads and displays the current bookmark list."
+ (elpher-with-clean-buffer
+ (insert "Use 'u' to return to the previous page.\n\n"
+ "---- Bookmark list ----\n\n")
+ (let ((bookmarks (elpher-load-bookmarks)))
+ (if bookmarks
+ (dolist (bookmark bookmarks)
+ (let ((display-string (elpher-bookmark-display-string bookmark))
+ (address (elpher-bookmark-address bookmark)))
+ (elpher-insert-index-record display-string
+ (elpher-address-type address)
+ (elpher-address-selector address)
+ (elpher-address-host address)
+ (elpher-address-port address))))
+ (insert "No bookmarks found.\n")))
+ (insert "\n-----------------------")
+ (elpher-restore-pos)))
;;; Bookmarks
(not (equal bookmark this-bookmark)))
(elpher-load-bookmarks)))))
-(defun elpher-display-bookmarks ()
- "Display saved bookmark list."
- (interactive)
- (elpher-with-clean-buffer
- (insert "Use 'r' to return to the previous page.\n\n"
- "---- Bookmark list ----\n\n")
- (let ((bookmarks (elpher-load-bookmarks)))
- (if bookmarks
- (dolist (bookmark bookmarks)
- (let ((display-string (elpher-bookmark-display-string bookmark))
- (address (elpher-bookmark-address bookmark)))
- (elpher-insert-index-record display-string
- (elpher-address-type address)
- (elpher-address-selector address)
- (elpher-address-host address)
- (elpher-address-port address))))
- (insert "No bookmarks found.\n")))
- (insert "\n-----------------------")
- (goto-char (point-min))
- (elpher-next-link)))
-
-(defun elpher-bookmark-current ()
- "Bookmark the current node."
- (interactive)
- (elpher-add-node-bookmark elpher-current-node))
-
-(defun elpher-bookmark-link ()
- "Bookmark the link at point."
- (interactive)
- (let ((button (button-at (point))))
- (if button
- (elpher-add-node-bookmark (button-get button 'elpher-node))
- (error "No link selected"))))
-(defun elpher-unbookmark-current ()
- "Remove bookmark for the current node."
- (interactive)
- (elpher-remove-node-bookmark elpher-current-node))
-
-(defun elpher-unbookmark-link ()
- "Remove bookmark for the link at point."
- (interactive)
- (let ((button (button-at (point))))
- (if button
- (elpher-remove-node-bookmark (button-get button 'elpher-node))
- (error "No link selected"))))
-
-;;; Interactive navigation procedures
+;;; Interactive procedures
;;
(defun elpher-next-link ()
(error "Already at root directory of current server")))
(error "Command invalid for this page"))))
+(defun elpher-bookmarks-current-p ()
+ "Return true if current node is a bookmarks page."
+ (eq (elpher-address-type (elpher-node-address elpher-current-node)) 'bookmarks))
+
+(defun elpher-reload-bookmarks ()
+ "Reload bookmarks if current node is a bookmarks page."
+ (if (elpher-bookmarks-current-p)
+ (elpher-reload-current-node)))
+
+(defun elpher-bookmark-current ()
+ "Bookmark the current node."
+ (interactive)
+ (if (not (elpher-bookmarks-current-p))
+ (elpher-add-node-bookmark elpher-current-node)))
+
+(defun elpher-bookmark-link ()
+ "Bookmark the link at point."
+ (interactive)
+ (let ((button (button-at (point))))
+ (if button
+ (progn
+ (elpher-add-node-bookmark (button-get button 'elpher-node))
+ (elpher-reload-bookmarks))
+ (error "No link selected"))))
+
+(defun elpher-unbookmark-current ()
+ "Remove bookmark for the current node."
+ (interactive)
+ (if (not (elpher-bookmarks-current-p))
+ (elpher-remove-node-bookmark elpher-current-node)))
+
+(defun elpher-unbookmark-link ()
+ "Remove bookmark for the link at point."
+ (interactive)
+ (let ((button (button-at (point))))
+ (if button
+ (progn
+ (elpher-remove-node-bookmark (button-get button 'elpher-node))
+ (elpher-reload-bookmarks))
+ (error "No link selected"))))
+
+(defun elpher-bookmarks ()
+ "Visit bookmarks."
+ (interactive)
+ (elpher-visit-node
+ (elpher-make-node "Bookmarks"
+ elpher-current-node
+ (elpher-make-address 'bookmarks))))
+
(defun elpher-info-node (node)
"Display information on NODE."
(let ((display-string (elpher-node-display-string node))
(define-key map (kbd "I") 'elpher-info-current)
(define-key map (kbd "c") 'elpher-copy-link-url)
(define-key map (kbd "C") 'elpher-copy-current-url)
+ (define-key map (kbd "a") 'elpher-bookmark-link)
+ (define-key map (kbd "A") 'elpher-bookmark-current)
+ (define-key map (kbd "x") 'elpher-unbookmark-link)
+ (define-key map (kbd "X") 'elpher-unbookmark-current)
+ (define-key map (kbd "B") 'elpher-bookmarks)
(when (fboundp 'evil-define-key)
(evil-define-key 'motion map
(kbd "TAB") 'elpher-next-link
(kbd "A") 'elpher-bookmark-current
(kbd "x") 'elpher-unbookmark-link
(kbd "X") 'elpher-unbookmark-current
- (kbd "B") 'elpher-display-bookmarks))
+ (kbd "B") 'elpher-bookmarks))
map)
"Keymap for gopher client.")
The Lambda Lab / projects / elpher.git / blobdiff