;; (define-derived-mode elopher-mode special-mode "elopher"
;; "Major mode for elopher, an elisp gopher client.")
-(defun )
+;; (global-set-key (kbd "C-c C-b") 'eval-buffer)
-(defun elopher-filter (proc string)
+(defvar elopher-type-margin-width 5)
+
+(defvar elopher-history '())
+
+(defun elopher-type-margin (&optional type-name)
+ (if type-name
+ (insert (propertize
+ (format (concat "%" (number-to-string elopher-type-margin-width) "s")
+ (concat "[" type-name "] "))
+ 'face '(foreground-color . "yellow")))
+ (insert (make-string elopher-type-margin-width ?\s))))
+
+(defun elopher-make-clickable (string link-function mouse-help)
+ (let ((map (make-sparse-keymap)))
+ (define-key map [mouse-1] link-function)
+ (define-key map (kbd "RET") link-function)
+ (propertize string
+ 'mouse-face 'highlight
+ 'help-echo (concat "mouse-1: " mouse-help)
+ 'keymap map)))
+
+(defun elopher-format-i (display-string)
+ (elopher-type-margin)
+ (insert (propertize display-string 'face '(foreground-color . "white")))
+ (insert "\n"))
+
+(defun elopher-format-0 (display-string selector hostname port)
+ (elopher-type-margin "T")
+ (insert (propertize
+ (elopher-make-clickable display-string
+ `(lambda () (interactive)
+ (elopher-get-text ,hostname ,port ,selector))
+ (format "open \"%s\" on %s port %s"
+ selector hostname port))
+ 'face '(foreground-color . "gray")))
+ (insert "\n"))
+
+(defun elopher-format-1 (display-string selector hostname port)
+ (elopher-type-margin "/")
+ (insert (propertize
+ (elopher-make-clickable display-string
+ `(lambda () (interactive)
+ (elopher-get-index ,hostname ,port ,selector))
+ (format "follow link to \"%s\" on %s port %s"
+ selector hostname port))
+ 'face '(foreground-color . "cyan")))
+ (insert "\n"))
+
+(defun elopher-process-record (line)
+ (let* ((type (elt line 0))
+ (fields (split-string (substring line 1) "\t"))
+ (g-display-string (elt fields 0))
+ (g-selector (elt fields 1))
+ (g-hostname (elt fields 2))
+ (g-port (elt fields 3)))
+ (pcase type
+ (?i (elopher-format-i g-display-string))
+ (?0 (elopher-format-0 g-display-string g-selector g-hostname g-port))
+ (?1 (elopher-format-1 g-display-string g-selector g-hostname g-port)))))
+
+(defvar elopher-incomplete-record "")
+
+(defun elopher-process-complete-records (string)
+ (let* ((til-now (string-join (list elopher-incomplete-record string)))
+ (lines (split-string til-now "\r\n")))
+ (dotimes (idx (length lines))
+ (if (< idx (- (length lines) 1))
+ (elopher-process-record (elt lines idx))
+ (setq elopher-incomplete-record (elt lines idx))))))
+
+(defun elopher-index-filter (proc string)
(with-current-buffer (get-buffer "*elopher*")
(let ((marker (process-mark proc)))
(if (not (marker-position marker))
(set-marker marker 0 (current-buffer)))
(save-excursion
(goto-char marker)
- (insert (propertize string 'face '(foreground-color . "magenta")))
+ (elopher-process-complete-records string)
(set-marker marker (point))))))
(defun elopher-get-index (host &optional port path)
- (switch-to-buffer-other-window "*elopher*")
+ (switch-to-buffer "*elopher*")
(erase-buffer)
(make-network-process
:name "elopher-process"
:host host
:service (if port port 70)
- :filter #'elopher-filter)
- (process-send-string "elopher-process" (format "%s\n" (if path path ""))))
+ :filter #'elopher-index-filter)
+ (process-send-string "elopher-process" (concat path "\n")))
+
+(defun elopher-text-filter (proc string)
+ (with-current-buffer (get-buffer "*elopher*")
+ (let ((marker (process-mark proc)))
+ (if (not (marker-position marker))
+ (set-marker marker 0 (current-buffer)))
+ (save-excursion
+ (goto-char marker)
+ (insert string)
+ (set-marker marker (point))))))
+
+(defun elopher-get-text (host port selector)
+ (switch-to-buffer "*elopher*")
+ (erase-buffer)
+ (make-network-process
+ :name "elopher-process"
+ :host host
+ :service port
+ :filter #'elopher-text-filter)
+ (process-send-string "elopher-process" (concat selector "\n")))
(defun elopher ()
"Start gopher client."
(elopher-get-index (read-from-minibuffer "Gopher host: ") 70))
(elopher-get-index "cosmic.voyage")
-
-(format "%s\n" nil)
-
-(delete-process "elopher-process")
-
- ;; (address (read-from-minibuffer "Address of gopher server: ")))
- ;; (message "Connecting to '%s' ..." address)
- ;; (erase-buffer)
- ;; (insert (propertize "Hello, world." 'face '(foreground-color . "red")))
- ;; (newline)
- ;; (insert (propertize "Hello, Tim." 'face '(foreground-color . "yellow"))))
+;; (elopher-get-index "gopher.floodgap.com")
+;; (elopher-get-index "maurits.id.au")
(defun elopher-quit ()
(interactive)
(kill-buffer "*elopher*"))
-(start-process "ls" "*elopher*" "/bin/date")
-
;;; elopher.el ends here
-
-(list-processes)