;; Author: Tim Vaughan <plugd@thelambdalab.xyz>
;; Created: 11 April 2019
-;; Version: 2.11.0
+;; Version: 3.0.0
;; Keywords: comm gopher
;; Homepage: https://thelambdalab.xyz/elpher
;; Package-Requires: ((emacs "27.1"))
;;; Global constants
;;
-(defconst elpher-version "2.11.0"
+(defconst elpher-version "3.0.0"
"Current version of elpher.")
(defconst elpher-margin-width 6
(finger elpher-get-finger-page elpher-render-text "txt" elpher-text)
(telnet elpher-get-telnet-page nil "tel" elpher-telnet)
(other-url elpher-get-other-url-page nil "url" elpher-other-url)
- ((special start) elpher-get-start-page nil)
- ((special history) elpher-get-history-page nil)
- ((special history-all) elpher-get-history-all-page nil))
+ ((special start) elpher-get-start-page nil "E" elpher-index)
+ ((special history) elpher-get-history-page nil "E" elpher-index)
+ ((special visited-pages) elpher-get-visited-pages-page nil "E" elpher-index))
"Association list from types to getters, renderers, margin codes and index faces.")
(defvar elpher--gemini-page-headings nil
"List of headings on the page.")
+
;;; Declarations to avoid compiler warnings.
;;
Otherwise, the SOCKS proxy is only used for connections to onion services."
:type '(boolean))
-(defcustom elpher-number-links nil
- "If non-nil, number links in pages when rendering.
-Links can be followed numerically by pressing `M' and entering by the link number."
- :type '(boolean))
-
;; Face customizations
(defgroup elpher-faces nil
"The current page for this Elpher buffer.")
(defvar elpher-history nil
- "The local history for this Elpher buffer.
+ "The local history stack for this Elpher buffer.
This variable is used by `elpher-back' and
`elpher-show-history'.")
-(defvar elpher-history-all nil
+(defvar elpher-visited-pages nil
"The global history for all Elpher buffers.
-This variable is used by `elpher-show-history-all'.")
+This variable is used by `elpher-show-visited-pages'.")
(defun elpher-visit-page (page &optional renderer no-history)
"Visit PAGE using its own renderer or RENDERER, if non-nil.
-Additionally, push PAGE onto the stack of previously-visited pages,
-unless NO-HISTORY is non-nil."
+Additionally, push PAGE onto the history stack and the list of
+previously-visited pages,unless NO-HISTORY is non-nil."
(elpher-save-pos)
(elpher-process-cleanup)
- (elpher-reset-link-number-counter)
- (unless (or no-history
- (equal (elpher-page-address elpher-current-page)
- (elpher-page-address page)))
- (push elpher-current-page elpher-history)
- (push elpher-current-page elpher-history-all))
+ (unless no-history
+ (unless (equal (elpher-page-address elpher-current-page)
+ (elpher-page-address page))
+ (push elpher-current-page elpher-history)
+ (unless (or (elpher-address-special-p (elpher-page-address page))
+ (and elpher-visited-pages
+ (equal page (car elpher-visited-pages))))
+ (push page elpher-visited-pages))))
(setq-local elpher-current-page page)
(let* ((address (elpher-page-address page))
(type (elpher-address-type address))
address
(elpher-address-to-url address))))))))
-(defvar elpher--link-number-counter 0
- "Used to number links on elpher pages.")
-(defun elpher-reset-link-number-counter ()
- "Reset the link number counter."
- (setq-local elpher--link-number-counter 0))
-
-(defun elpher--insert-text-button (label &rest properties)
- "Insert a potentially-numbered button into the current buffer.
-The text for the button is provided by LABEL, while the button
-properties in PROPERTIES are as per `insert-text-button'."
-
- (if elpher-number-links
- (setq-local elpher--link-number-counter (+ elpher--link-number-counter 1)))
- (let ((pref (if elpher-number-links
- (concat "[" (number-to-string elpher--link-number-counter) "] ")
- "")))
- (apply #'insert-text-button (cons (concat pref label) properties))))
-
(defun elpher-insert-index-record (display-string &optional address)
"Function to insert an index record into the current buffer.
The contents of the record are dictated by DISPLAY-STRING and ADDRESS.
(filtered-display-string (elpher-color-filter-apply display-string))
(page (elpher-make-page filtered-display-string address)))
(elpher-insert-margin margin-code)
- (elpher--insert-text-button filtered-display-string
- 'face face
- 'elpher-page page
- 'action #'elpher-click-link
- 'follow-link t
- 'help-echo #'elpher--page-button-help))
+ (insert-text-button filtered-display-string
+ 'face face
+ 'elpher-page page
+ 'action #'elpher-click-link
+ 'follow-link t
+ 'help-echo #'elpher--page-button-help))
(pcase type
('nil ;; Information
(elpher-insert-margin)
(defconst elpher-url-regex
"\\([a-zA-Z]+\\)://\\([a-zA-Z0-9.-]*[a-zA-Z0-9-]\\|\\[[a-zA-Z0-9:]+\\]\\)\\(:[0-9]+\\)?\\(/\\([0-9a-zA-Z_~?/@|:.%#=&-]*[0-9a-zA-Z_~?/@|#-]\\)?\\)?"
- "Regexp used to locate and buttinofy URLs in text files loaded by elpher.")
+ "Regexp used to locate and buttonify URLs in text files loaded by elpher.")
(defun elpher-buttonify-urls (string)
"Turn substrings which look like urls in STRING into clickable buttons."
'face 'button)))
(buffer-string)))
-(defconst elpher-ansi-regex "\x1b\\[[^m]*m"
- "Incomplete regexp used to strip out some troublesome ANSI escape sequences.")
-
(defun elpher-process-text-for-display (string)
"Perform any desired processing of STRING prior to display as text.
Currently includes buttonifying URLs and processing ANSI escape codes."
(let* ((face (elt type-map-entry 3))
(filtered-display-string (elpher-color-filter-apply display-string))
(page (elpher-make-page filtered-display-string address)))
- (elpher--insert-text-button filtered-display-string
- 'face face
- 'elpher-page page
- 'action #'elpher-click-link
- 'follow-link t
- 'help-echo #'elpher--page-button-help))
+ (insert-text-button filtered-display-string
+ 'face face
+ 'elpher-page page
+ 'action #'elpher-click-link
+ 'follow-link t
+ 'help-echo #'elpher--page-button-help))
(insert (propertize display-string 'face 'elpher-unknown)))
(insert "\n"))))
(browse-url url)))))
-;; Start page page retrieval
+;; Start page retrieval
(defun elpher-get-start-page (renderer)
"Getter which displays the start page (RENDERER must be nil)."
"\n"
" - TAB/Shift-TAB: next/prev item on current page\n"
" - RET/mouse-1: open item under cursor\n"
- " - m/M: select an item on current page by name (autocompletes) or number\n"
+ " - m: select an item on current page by name (autocompletes)\n"
" - u/mouse-3/U: return to previous page or to the start page\n"
- " - o/O: visit different selector or the root menu of the current server\n"
" - g: go to a particular address (gopher, gemini, finger)\n"
+ " - o/O: open a different address selector or the root menu of the current server\n"
" - d/D: download item under cursor or current page\n"
" - i/I: info on item under cursor or current page\n"
" - c/C: copy URL representation of item under cursor or current page\n"
" - a/A: bookmark the item under cursor or current page\n"
" - B: list all bookmarks\n"
- " - s/S: show history of current buffer or for all buffers\n"
+ " - s/S: show current history stack or all previously visted pages\n"
" - r: redraw current page (using cached contents if available)\n"
" - R: reload current page (regenerates cache)\n"
" - !: set character coding system for gopher (default is to autodetect)\n"
(insert "\n"
"Your bookmarks are stored in your ")
(let ((help-string "RET,mouse-1: Open Emacs bookmark list"))
- (elpher--insert-text-button "Emacs bookmark list"
- 'face 'link
- 'action (lambda (_)
- (interactive)
- (call-interactively #'bookmark-bmenu-list))
- 'follow-link t
- 'help-echo help-string))
+ (insert-text-button "Emacs bookmark list"
+ 'face 'link
+ 'action (lambda (_)
+ (interactive)
+ (call-interactively #'elpher-open-bookmarks))
+ 'follow-link t
+ 'help-echo help-string))
(insert ".\n")
(insert (propertize
"(Bookmarks from legacy elpher-bookmarks files will be automatically imported.)\n"
(insert "\n"
"** Refer to the ")
(let ((help-string "RET,mouse-1: Open Elpher info manual (if available)"))
- (elpher--insert-text-button "Elpher info manual"
- 'face 'link
- 'action (lambda (_)
- (interactive)
- (info "(elpher)"))
- 'follow-link t
- 'help-echo help-string))
+ (insert-text-button "Elpher info manual"
+ 'face 'link
+ 'action (lambda (_)
+ (interactive)
+ (info "(elpher)"))
+ 'follow-link t
+ 'help-echo help-string))
(insert " for the full documentation. **\n")
(insert (propertize
(concat " (This should be available if you have installed Elpher using\n"
;; History page retrieval
-(defun elpher-history ()
- "Show the history of pages leading to the current page in this buffer.
-Use \\[elpher-history-all] to see the entire history.
+(defun elpher-show-history ()
+ "Show the current contents of elpher's history stack.
+Use \\[elpher-show-visited-pages] to see the entire history.
This is rendered using `elpher-get-history-page' via `elpher-type-map'."
(interactive)
(elpher-visit-page
- (elpher-make-page "Elpher History Page"
+ (elpher-make-page "Current History Stack"
(elpher-make-special-address 'history))))
-(defun elpher-history-all ()
+(defun elpher-show-visited-pages ()
"Show the all the pages you've visited using Elpher.
-Use \\[elpher-history] to see just the history for the current buffer.
-This is rendered using `elpher-get-history-all-page' via `elpher-type-map'."
+Use \\[elpher-show-history] to see just the current history stack.
+This is rendered using `elpher-get-visited-pages-page' via `elpher-type-map'."
(interactive)
(elpher-visit-page
- (elpher-make-page "Elpher History Of All Seen Pages"
- (elpher-make-special-address 'history-all))))
+ (elpher-make-page "Elpher Visted Pages"
+ (elpher-make-special-address 'visited-pages))))
(defun elpher-get-history-page (renderer)
"Getter which displays the history page (RENDERER must be nil)."
(when renderer
(elpher-visit-previous-page)
(error "Command not supported for history page"))
- (elpher-show-history elpher-history))
+ (elpher-display-history-links elpher-history "Current history stack"))
-(defun elpher-get-history-all-page (renderer)
- "Getter which displays the history page (RENDERER must be nil)."
+(defun elpher-get-visited-pages-page (renderer)
+ "Getter which displays the list of visited pages (RENDERER must be nil)."
(when renderer
(elpher-visit-previous-page)
(error "Command not supported for history page"))
- (elpher-show-history elpher-history-all))
-
-(defun elpher-show-history (pages)
- "Show all PAGES in the Elpher buffer."
- (elpher-with-clean-buffer
- (insert "---- Visited link history ----\n\n")
- (if pages
- (dolist (page pages)
- (when page
- (let ((display-string (elpher-page-display-string page))
- (address (elpher-page-address page)))
- (elpher-insert-index-record display-string address))))
- (insert "No history items found.\n"))
- (insert "\n----------------------------")))
+ (elpher-display-history-links
+ (seq-filter (lambda (page)
+ (not (elpher-address-special-p (elpher-page-address page))))
+ elpher-visited-pages)
+ "All visited pages"))
+
+(defun elpher-display-history-links (pages title)
+ "Show all PAGES in an Elpher buffer with a given TITLE."
+ (let* ((title-line (concat "---- " title " ----"))
+ (footer-line (make-string (length title-line) ?-)))
+ (elpher-with-clean-buffer
+ (insert title-line "\n\n")
+ (if pages
+ (dolist (page pages)
+ (when page
+ (let ((display-string (elpher-page-display-string page))
+ (address (elpher-page-address page)))
+ (elpher-insert-index-record display-string address))))
+ (insert "No history items found.\n"))
+ (insert "\n" footer-line "\n"
+ "Select and entry or press 'u' to return to the previous page.")
+ (elpher-restore-pos))))
;;; Bookmarks
(let* ((url (cdr (assq 'location bookmark))))
(elpher-go url)))
-(defun elpher-set-bookmark-no-overwrite ()
+(defun elpher-bookmark-link ()
"Bookmark the link at point.
-To bookmark the current page, use \\[bookmark-set-no-overwrite]."
+To bookmark the current page, use \\[elpher-bookmark-current]."
(interactive)
(let ((elpher-bookmark-link t))
(bookmark-set-no-overwrite)))
+(defun elpher-bookmark-current ()
+ "Bookmark the current page.
+To bookmark the link at point use \\[elpher-bookmark-link]."
+ (interactive)
+ (call-interactively #'bookmark-set-no-overwrite))
+
(defun elpher-bookmark-import (file)
- "Import Elpher bookmarks file FILE into Emacs bookmarks."
+ "Import legacy Elpher bookmarks file FILE into Emacs bookmarks."
(interactive (list (if (and (boundp 'elpher-bookmarks-file)
(file-readable-p elpher-bookmarks-file))
elpher-bookmarks-file
(bookmark-store display-string (cdr record) t)))
(bookmark-save))
+(defun elpher-open-bookmarks ()
+ "Display the current list of elpher bookmarks.
+This is just a call to `bookmark-bmenu-list', but we also check for a legacy
+bookmark file and offer to import it."
+ (interactive)
+ (let ((old-bookmarks-file (or (and (boundp 'elpher-bookmarks-file)
+ elpher-bookmarks-file)
+ (locate-user-emacs-file "elpher-bookmarks"))))
+ (when (and (file-readable-p old-bookmarks-file)
+ (y-or-n-p (concat "Legacy elpher-bookmarks file \""
+ old-bookmarks-file
+ "\" found. Import now?")))
+ (elpher-bookmark-import old-bookmarks-file)
+ (rename-file old-bookmarks-file (concat old-bookmarks-file "-legacy"))))
+ (call-interactively #'bookmark-bmenu-list))
+
+
;;; Integrations
;;
#'elpher-render-download
t)))
-(defun elpher-build-link-map ()
+(defun elpher--build-link-map ()
"Build alist mapping link names to destination pages in current buffer."
(let ((link-map nil)
(b (next-button (point-min) t)))
(defun elpher-jump ()
"Select a directory entry by name. Similar to the info browser (m)enu command."
(interactive)
- (let* ((link-map (elpher-build-link-map)))
+ (let* ((link-map (elpher--build-link-map)))
(if link-map
(let ((key (let ((completion-ignore-case t))
(completing-read "Directory item/link: "
(goto-char (button-start b))
(button-activate b)))))))
-(defun elpher-jump-to-number (n)
- "Jump to directory entry number N."
- (interactive "nDirectory item/link number: ")
- (let* ((link-map (reverse (elpher-build-link-map))))
- (if link-map
- (if (<= 1 n (length link-map))
- (let ((b (cdr (elt link-map (- n 1)))))
- (goto-char (button-start b))
- (button-activate b))
- (error "No link with that number")))))
-
(defun elpher-root-dir ()
"Visit root of current server."
(interactive)
(define-key map (kbd "^") 'elpher-back)
(define-key map [mouse-3] 'elpher-back)
(define-key map (kbd "U") 'elpher-back-to-start)
- (define-key map (kbd "O") 'elpher-root-dir)
(define-key map (kbd "g") 'elpher-go)
(define-key map (kbd "o") 'elpher-go-current)
- (define-key map (kbd "s") 'elpher-history)
- (define-key map (kbd "S") 'elpher-history-all)
+ (define-key map (kbd "O") 'elpher-root-dir)
+ (define-key map (kbd "s") 'elpher-show-history)
+ (define-key map (kbd "S") 'elpher-show-visited-pages)
(define-key map (kbd "r") 'elpher-redraw)
(define-key map (kbd "R") 'elpher-reload)
(define-key map (kbd "T") 'elpher-toggle-tls)
(define-key map (kbd "d") 'elpher-download)
(define-key map (kbd "D") 'elpher-download-current)
(define-key map (kbd "m") 'elpher-jump)
- (define-key map (kbd "M") 'elpher-jump-to-number)
(define-key map (kbd "i") 'elpher-info-link)
(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-set-bookmark-no-overwrite)
- (define-key map (kbd "A") 'bookmark-set-no-overwrite)
- (define-key map (kbd "B") 'bookmark-bmenu-list)
+ (define-key map (kbd "a") 'elpher-bookmark-link)
+ (define-key map (kbd "A") 'elpher-bookmark-current)
+ (define-key map (kbd "B") 'elpher-open-bookmarks)
(define-key map (kbd "!") 'elpher-set-gopher-coding-system)
(define-key map (kbd "F") 'elpher-forget-current-certificate)
(when (fboundp 'evil-define-key*)
(kbd "^") 'elpher-back
[mouse-3] 'elpher-back
(kbd "U") 'elpher-back-to-start
- (kbd "o") 'elpher-go
- (kbd "O") 'elpher-go-current
+ (kbd "g") 'elpher-go
+ (kbd "o") 'elpher-go-current
+ (kbd "O") 'elpher-root-dir
+ (kbd "s") 'elpher-show-history
+ (kbd "S") 'elpher-show-visited-pages
(kbd "r") 'elpher-redraw
(kbd "R") 'elpher-reload
(kbd "T") 'elpher-toggle-tls
(kbd "d") 'elpher-download
(kbd "D") 'elpher-download-current
(kbd "m") 'elpher-jump
- (kbd "M") 'elpher-jump-to-number
(kbd "i") 'elpher-info-link
(kbd "I") 'elpher-info-current
(kbd "c") 'elpher-copy-link-url
(kbd "C") 'elpher-copy-current-url
- (kbd "a") 'elpher-set-bookmark-no-overwrite
- (kbd "A") 'bookmark-set-no-overwrite
- (kbd "B") 'bookmark-bmenu-list
+ (kbd "a") 'elpher-bookmark-link
+ (kbd "A") 'elpher-bookmark-current
+ (kbd "B") 'elpher-open-bookmarks
(kbd "!") 'elpher-set-gopher-coding-system
(kbd "F") 'elpher-forget-current-certificate))
map)