;; Full instructions can be found in the Elpher info manual.
;; Elpher is under active development. Any suggestions for
-;; improvements are welcome, and can be made on the official
-;; project page, gopher://thelambdalab.xyz/elpher, or via the
+;; improvements are welcome, and can be made on the official project
+;; page, gopher://thelambdalab.xyz/1/projects/elpher, or via the
;; project mailing list at https://lists.sr.ht/~michel-slm/elpher.
;;; Code:
(require 'gnutls)
(require 'socks)
-;;; ANSI colors or XTerm colors
-
-(or (require 'xterm-color nil t)
- (require 'ansi-color))
-
-(defalias 'elpher-color-filter-apply
- (if (fboundp 'xterm-color-filter)
- (lambda (s)
- (let ((_xterm-color-render nil))
- (xterm-color-filter s)))
- 'ansi-color-filter-apply)
- "A function to filter out ANSI escape sequences.")
-
-(defalias 'elpher-color-apply
- (if (fboundp 'xterm-color-filter)
- 'xterm-color-filter
- 'ansi-color-apply)
- "A function to apply ANSI escape sequences.")
-
;;; Global constants
;;
(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 "E" elpher-index)
+ ((special bookmarks) elpher-get-bookmarks-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.")
;;
(eval-when-compile
- (defvar bookmark-make-record-function)
+ (declare-function ansi-color-filter-apply "ansi-color")
+ (declare-function ansi-color-apply "ansi-color")
(declare-function bookmark-store "bookmark")
(declare-function org-link-store-props "ol")
(declare-function org-link-set-parameters "ol")
- (defvar thing-at-point-uri-schemes)
- (defvar mu4e~view-beginning-of-url-regexp))
+ (defvar ansi-color-context)
+ (defvar bookmark-make-record-function)
+ (defvar mu4e~view-beginning-of-url-regexp)
+ (defvar thing-at-point-uri-schemes))
;;; Customization group
Otherwise, the SOCKS proxy is only used for connections to onion services."
:type '(boolean))
+(defcustom elpher-use-emacs-bookmark-menu nil
+ "If non-nil, elpher will only use the native Emacs bookmark menu.
+Otherwise, \\[elpher-show-bookmarks] will visit a special elpher bookmark
+page within which all of the standard elpher keybindings are active."
+ :type '(boolean))
+
;; Face customizations
(defgroup elpher-faces nil
"Create an ADDRESS object corresponding to the given special address symbol TYPE."
type)
-(defun elpher-make-start-page ()
- "Create the start page."
- (elpher-make-page "Elpher Start Page"
- (elpher-make-special-address 'start)))
-
(defun elpher-address-to-url (address)
"Get string representation of ADDRESS, or nil if ADDRESS is special."
(if (elpher-address-special-p address)
"Create a page with DISPLAY-STRING and ADDRESS."
(list display-string address))
+(defun elpher-make-start-page ()
+ "Create the start page."
+ (elpher-make-page "Elpher Start Page"
+ (elpher-make-special-address 'start)))
+
(defun elpher-page-display-string (page)
"Retrieve the display string corresponding to PAGE."
(elt page 0))
(unless (eq major-mode 'elpher-mode)
;; avoid resetting buffer-local variables
(elpher-mode))
- (let ((inhibit-read-only t))
+ (let ((inhibit-read-only t)
+ (ansi-color-context nil)) ;; clean ansi interpreter state
(setq-local network-security-level
(default-value 'network-security-level))
(erase-buffer)
(elpher-decode (replace-regexp-in-string "\n\\.\n$" "\n"
(replace-regexp-in-string "\r" "" string))))
+;;; Buttonify urls
+
+(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 buttonify URLs in text files loaded by elpher.")
+
+(defun elpher-buttonify-urls (string)
+ "Turn substrings which look like urls in STRING into clickable buttons."
+ (with-temp-buffer
+ (insert string)
+ (goto-char (point-min))
+ (while (re-search-forward elpher-url-regex nil t)
+ (let ((page (elpher-make-page (substring-no-properties (match-string 0))
+ (elpher-address-from-url (match-string 0)))))
+ (make-text-button (match-beginning 0)
+ (match-end 0)
+ 'elpher-page page
+ 'action #'elpher-click-link
+ 'follow-link t
+ 'help-echo #'elpher--page-button-help
+ 'face 'button)))
+ (buffer-string)))
+
+;;; ANSI colors or XTerm colors (application and filtering)
+
+(or (require 'xterm-color nil t)
+ (require 'ansi-color))
+
+(defalias 'elpher-color-filter-apply
+ (if (fboundp 'xterm-color-filter)
+ (lambda (s)
+ (let ((_xterm-color-render nil))
+ (xterm-color-filter s)))
+ #'ansi-color-filter-apply)
+ "A function to filter out ANSI escape sequences.")
+
+(defalias 'elpher-color-apply
+ (if (fboundp 'xterm-color-filter)
+ #'xterm-color-filter
+ #'ansi-color-apply)
+ "A function to apply ANSI escape sequences.")
+
+;;; Processing text for display
+
+(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."
+ (elpher-buttonify-urls (if elpher-filter-ansi-from-text
+ (elpher-color-filter-apply string)
+ (elpher-color-apply string))))
+
;;; Network error reporting
;;
(if (timerp elpher-network-timer)
(cancel-timer elpher-network-timer)))
+(defun elpher-make-network-timer (thunk)
+ "Creates a timer to run the THUNK after `elpher-connection-timeout' seconds.
+This is just a wraper around `run-at-time' which additionally sets the
+buffer-local variable `elpher-network-timer' to allow
+`elpher-process-cleanup' to also clear the timer."
+ (let ((timer (run-at-time elpher-connection-timeout nil thunk)))
+ (setq-local elpher-network-timer timer)
+ timer))
+
(defun elpher-get-host-response (address default-port query-string response-processor
&optional use-tls force-ipv4)
"Generic function for retrieving data from ADDRESS.
:hostname host
:keylist
(elpher-get-current-keylist address)))
- (proc (if socks (socks-open-network-stream "elpher-process" nil host service)
- (make-network-process :name "elpher-process"
- :host host
- :family (and force-ipv4 'ipv4)
- :service service
- :buffer nil
- :nowait t
- :tls-parameters
- (and use-tls
- (cons 'gnutls-x509pki
- (apply #'gnutls-boot-parameters
- gnutls-params))))))
- (timer (run-at-time elpher-connection-timeout nil
+ (timer (elpher-make-network-timer
(lambda ()
(elpher-process-cleanup)
(cond
response-processor
nil force-ipv4))
(t
- (elpher-network-error address "Connection time-out.")))))))
+ (elpher-network-error address "Connection time-out."))))))
+ (proc (if socks (socks-open-network-stream "elpher-process" nil host service)
+ (make-network-process :name "elpher-process"
+ :host host
+ :family (and force-ipv4 'ipv4)
+ :service service
+ :buffer nil
+ :nowait t
+ :tls-parameters
+ (and use-tls
+ (cons 'gnutls-x509pki
+ (apply #'gnutls-boot-parameters
+ gnutls-params)))))))
(setq elpher-network-timer timer)
(set-process-coding-system proc 'binary 'binary)
(set-process-query-on-exit-flag proc nil)
(if use-tls (apply #'gnutls-negotiate :process proc gnutls-params))
(funcall (process-sentinel proc) proc "open\n")))
(error
+ (elpher-process-cleanup)
(error "Error initiating connection to server")))))
;; Text rendering
-(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 buttonify URLs in text files loaded by elpher.")
-
-(defun elpher-buttonify-urls (string)
- "Turn substrings which look like urls in STRING into clickable buttons."
- (with-temp-buffer
- (insert string)
- (goto-char (point-min))
- (while (re-search-forward elpher-url-regex nil t)
- (let ((page (elpher-make-page (substring-no-properties (match-string 0))
- (elpher-address-from-url (match-string 0)))))
- (make-text-button (match-beginning 0)
- (match-end 0)
- 'elpher-page page
- 'action #'elpher-click-link
- 'follow-link t
- 'help-echo #'elpher--page-button-help
- 'face 'button)))
- (buffer-string)))
-
-(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."
- (elpher-buttonify-urls (if elpher-filter-ansi-from-text
- (elpher-color-filter-apply string)
- (elpher-color-apply string))))
-
(defun elpher-render-text (data &optional _mime-type-string)
"Render DATA as text. MIME-TYPE-STRING is unused."
(elpher-with-clean-buffer
(insert (propertize display-string 'face 'elpher-unknown)))
(insert "\n"))))
-;; buffer-local
(defvar elpher--gemini-page-headings nil
"List of headings on the page.")
(elpher-address-from-url "gemini://geminispace.info/search"))
(insert "\n"
"Your bookmarks are stored in your ")
- (let ((help-string "RET,mouse-1: Open Emacs bookmark list"))
+ (let ((help-string "RET,mouse-1: Open bookmark list"))
(insert-text-button "Emacs bookmark list"
'face 'link
'action (lambda (_)
(interactive)
- (call-interactively #'elpher-open-bookmarks))
+ (call-interactively #'elpher-show-bookmarks))
'follow-link t
'help-echo help-string))
(insert ".\n")
"(Bookmarks from legacy elpher-bookmarks files will be automatically imported.)\n"
'face 'shadow))
(insert "\n"
- "For Elpher release news or to leave feedback, visit:\n")
+ "The gopher home of the Elpher project is here:\n")
(elpher-insert-index-record "The Elpher Project Page"
(elpher-make-gopher-address ?1
"/projects/elpher/"
"thelambdalab.xyz"
70))
- (insert "\n"
- "** Refer to the ")
(let ((help-string "RET,mouse-1: Open Elpher info manual (if available)"))
- (insert-text-button "Elpher info manual"
+ (insert "\n"
+ "The following info documentation is available:\n"
+ " - ")
+ (insert-text-button "Elpher Manual"
'face 'link
'action (lambda (_)
(interactive)
(info "(elpher)"))
'follow-link t
- 'help-echo help-string))
- (insert " for the full documentation. **\n")
+ 'help-echo help-string)
+ (insert "\n - ")
+ (insert-text-button "Changes introduced by the latest release"
+ 'face 'link
+ 'action (lambda (_)
+ (interactive)
+ (info "(elpher)News"))
+ 'follow-link t
+ 'help-echo help-string))
+ (insert "\n")
(insert (propertize
- (concat " (This should be available if you have installed Elpher using\n"
- " MELPA. Otherwise you will have to install the manual yourself.)\n")
+ (concat " (These documents should be available if you have installed Elpher \n"
+ " using MELPA. Otherwise you may have to install the manual yourself.)\n")
'face 'shadow))
(elpher-restore-pos)))
(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.")
+ "Select an entry or press 'u' to return to the previous page.")
(elpher-restore-pos))))
;;;###autoload
(defun elpher-bookmark-jump (bookmark)
- "Go to a particular BOOKMARK."
- (let* ((url (cdr (assq 'location bookmark))))
- (elpher-go url)))
+ "Handler used to open a bookmark using elpher.
+The argument BOOKMARK is a bookmark record passed to the function.
+This handler is responsible for loading the bookmark in some buffer,
+then making that buffer the current buffer. It should not switch
+to the buffer."
+ (let* ((url (cdr (assq 'location bookmark)))
+ (cleaned-url (string-trim url))
+ (address (elpher-address-from-url cleaned-url))
+ (page (elpher-make-page cleaned-url address)))
+ (elpher-with-clean-buffer
+ (elpher-visit-page page))
+ (set-buffer (get-buffer elpher-buffer-name))
+ nil))
(defun elpher-bookmark-link ()
"Bookmark the link at point.
(bookmark-store display-string (cdr record) t)))
(bookmark-save))
-(defun elpher-open-bookmarks ()
+(defun elpher-get-bookmarks-page (renderer)
+ "Getter which displays the history page (RENDERER must be nil)."
+ (when renderer
+ (elpher-visit-previous-page)
+ (error "Command not supported for bookmarks page"))
+ (elpher-with-clean-buffer
+ (insert " ---- Elpher Bookmarks ---- \n\n")
+ (bookmark-maybe-load-default-file)
+ (let ((bookmarks (bookmark-maybe-sort-alist)))
+ (if bookmarks
+ (dolist (bookmark bookmarks)
+ (let* ((name (car bookmark))
+ (url (alist-get 'location (cdr bookmark)))
+ (address (elpher-address-from-url url)))
+ (elpher-insert-index-record name address)))
+ (insert "No bookmarked pages found.\n")))
+ (insert "\n --------------------------\n\n"
+ "Select an entry or press 'u' to return to the previous page.\n\n"
+ "Bookmarks can be renamed or deleted via the ")
+ (insert-text-button "Emacs bookmark menu"
+ 'action (lambda (_)
+ (interactive)
+ (call-interactively #'bookmark-bmenu-list))
+ 'follow-link t
+ 'help-echo "RET,mouse-1: open Emacs bookmark menu")
+ (insert (substitute-command-keys
+ ",\nwhich can also be openned from anywhere using '\\[bookmark-bmenu-list]'."))
+ (elpher-restore-pos)))
+
+(defun elpher-show-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."
+This will 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)
"\" found. Import now?")))
(elpher-bookmark-import old-bookmarks-file)
(rename-file old-bookmarks-file (concat old-bookmarks-file "-legacy"))))
- (call-interactively #'bookmark-bmenu-list))
+ (if elpher-use-emacs-bookmark-menu
+ (call-interactively #'bookmark-bmenu-list)
+ (elpher-visit-page
+ (elpher-make-page "Elpher Bookmarks"
+ (elpher-make-special-address 'bookmarks)))))
;;; Integrations
(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 "B") 'elpher-open-bookmarks)
+ (define-key map (kbd "B") 'elpher-show-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 "C") 'elpher-copy-current-url
(kbd "a") 'elpher-bookmark-link
(kbd "A") 'elpher-bookmark-current
- (kbd "B") 'elpher-open-bookmarks
+ (kbd "B") 'elpher-show-bookmarks
(kbd "!") 'elpher-set-gopher-coding-system
(kbd "F") 'elpher-forget-current-certificate))
map)
(setq-local elpher-history nil)
(setq-local elpher-buffer-name (buffer-name))
(setq-local bookmark-make-record-function #'elpher-bookmark-make-record)
- (setq-local imenu-create-index-function (lambda () elpher--gemini-page-headings)))
+ (setq-local imenu-create-index-function (lambda () elpher--gemini-page-headings))
+ (setq-local xterm-color-preserve-properties t))
(when (fboundp 'evil-set-initial-state)
(evil-set-initial-state 'elpher-mode 'motion))
The Lambda Lab / projects / elpher.git / blobdiff