From 2d1c92a8a9f48f67a585df9f2a86a98e0e6da30d Mon Sep 17 00:00:00 2001 From: Tim Vaughan Date: Sun, 28 Jul 2019 15:17:24 +0200 Subject: [PATCH] Working on switching to URL-based addresses. --- elpher.el | 151 ++++++++++++++++++++++++------------------------------ 1 file changed, 67 insertions(+), 84 deletions(-) diff --git a/elpher.el b/elpher.el index 7220276..18c2495 100644 --- a/elpher.el +++ b/elpher.el @@ -69,26 +69,33 @@ (defconst elpher-margin-width 6 "Width of left-hand margin used when rendering indicies.") - -(defconst elpher-type-map - '((?0 elpher-get-text-node "txt" elpher-text) - (?1 elpher-get-index-node "/" elpher-index) - (?4 elpher-get-node-download "bin" elpher-binary) - (?5 elpher-get-node-download "bin" elpher-binary) - (?7 elpher-get-search-node "?" elpher-search) - (?8 elpher-get-telnet-node "tel" elpher-telnet) - (?9 elpher-get-node-download "bin" elpher-binary) - (?g elpher-get-image-node "img" elpher-image) - (?p elpher-get-image-node "img" elpher-image) - (?I elpher-get-image-node "img" elpher-image) - (?d elpher-get-node-download "doc" elpher-binary) - (?P elpher-get-node-download "doc" elpher-binary) - (?s elpher-get-node-download "snd" elpher-binary) - (?h elpher-get-url-node "url" elpher-url) - (bookmarks elpher-get-bookmarks-node "#" elpher-index) - (start elpher-get-start-node "#" elpher-index)) +(defconst elpher-transport-map + '(("gopher" elpher-get-gopher-selector) + ("gophers" elpher-get-gopher-selector) + ("gemini" elpher-get-gemini-selector))) + +(defconst elpher-gopher-type-map + '((?0 elpher-display-text "txt" elpher-text) + (?1 elpher-display-gophermap "/" elpher-index) + (?4 nil "bin" elpher-binary) + (?5 nil "bin" elpher-binary) + (?7 elpher-display-search-node "?" elpher-search) + (?8 elpher-display-telnet-node "tel" elpher-telnet) + (?9 nil "bin" elpher-binary) + (?g elpher-display-image-node "img" elpher-image) + (?p elpher-display-image-node "img" elpher-image) + (?I elpher-display-image-node "img" elpher-image) + (?d nil "doc" elpher-binary) + (?P nil "doc" elpher-binary) + (?s nil "snd" elpher-binary) + (?h elpher-display-node-html "htm" elpher-html)) "Association list from types to getters, margin codes and index faces.") +(defconst elpher-mime-type-map + '(("text/gemini" elpher-display-node-text) + ("text/html" elpher-display-node-html) + ("text/*" elpher-display-node-text) + ("image/*" elpher-display-image-node))) ;;; Customization group ;; @@ -154,10 +161,6 @@ Otherwise, use the system browser via the BROWSE-URL function." "If non-nil, turns URLs matched in directories into clickable buttons." :type '(boolean)) -(defcustom elpher-cache-images nil - "If non-nil, cache images in memory in the same way as other content." - :type '(boolean)) - (defcustom elpher-use-header t "If non-nil, display current node information in buffer header." :type '(boolean)) @@ -174,63 +177,53 @@ allows switching from an encrypted channel back to plain text without user input ;; Address -(defun elpher-make-address (type &optional selector host port use-tls) - "Create an address of a gopher object with TYPE, SELECTOR, HOST and PORT. -Although selector host and port are optional, they are only omitted for -special address types, such as 'start for the start page. +(defun elpher-make-address-from-url (url) + "Create an elpher address corresponding to the given URL." + (let ((url (url-generic-parse-url url-string))) + (if (and (url-type url) + (url-host url)) + (setf (url-filename url) (url-unhex-string (url-filename url))) + (error "Malformed URL" url)))) + +(defun elpher-address-get-url (address) + "Get URL representation of ADDRESS." + (url-encode-url (url-recreate address))) -Setting the USE-TLS parameter to non-nil causes Elpher to engage TLS mode -before attempting to connect to the server." - (if use-tls - (list type selector host port 'tls) - (list type selector host port))) +(defun elpher-address-gopher-p? (address) + "Return non-nil if ADDRESS specifies a gopher address." + (let ((protocol (url-type address))) + (if (or (string-equal protocol "gopher") + (string-equal protocol "gophers"))))) (defun elpher-address-type (address) - "Retrieve type from ADDRESS." - (elt address 0)) + "Retrieve selector type from ADDRESS." + (let ((filename (url-filename address))) + (if (> (length filename) 0) + (string-to-char filename) + ?1))) (defun elpher-address-selector (address) "Retrieve selector from ADDRESS." - (elt address 1)) + (let ((filename (url-filename address))) + (if (> (length filename) 0) + (substring filename 1) + ""))) (defun elpher-address-host (address) "Retrieve host from ADDRESS." - (elt address 2)) + (url-host address)) (defun elpher-address-port (address) "Retrieve port from ADDRESS." - (elt address 3)) + (url-port address)) (defun elpher-address-use-tls-p (address) "Return non-nil if ADDRESS is marked as needing TLS." - (elt address 4)) + (string-equal (url-type address) "gophers")) (defun elpher-address-special-p (address) "Return non-nil if ADDRESS is special (e.g. start page, bookmarks page)." - (not (elpher-address-host address))) - -(defun elpher-get-address-url (address) - "Get URL representation of ADDRESS." - (let ((type (elpher-address-type address)) - (selector (elpher-address-selector address)) - (bare-host (elpher-address-host address)) - (port (elpher-address-port address))) - (url-encode-url - (let ((host (if (string-match-p ":" bare-host) - (concat "[" bare-host "]") - bare-host))) - (if (and (equal type ?h) - (string-prefix-p "URL:" selector)) - (elt (split-string selector "URL:") 1) - (concat "gopher" - (if (elpher-address-use-tls-p address) "s" "") - "://" - host - (if (equal port 70) - "" - (format ":%d" port)) - "/" (string type) - selector)))))) + (symbolp address)) ;; Node @@ -625,31 +618,21 @@ calls, as is necessary if the match is performed by `string-match'." (defun elpher-get-image-node () "Getter which retrieves the current node contents as an image to view." - (let* ((address (elpher-node-address elpher-current-node)) - (content (elpher-get-cached-content address))) - (if content + (let* ((address (elpher-node-address elpher-current-node))) + (if (display-images-p) (progn (elpher-with-clean-buffer - (insert-image content) - (elpher-restore-pos))) - (if (display-images-p) - (progn - (elpher-with-clean-buffer - (insert "LOADING IMAGE... (use 'u' to cancel)")) - (elpher-get-selector address - (lambda (proc event) - (unless (string-prefix-p "deleted" event) - (let ((image (create-image - elpher-selector-string - nil t))) - (elpher-with-clean-buffer - (insert-image image) - (elpher-restore-pos)) - (if elpher-cache-images - (elpher-cache-content - (elpher-node-address elpher-current-node) - image))))))) - (elpher-get-node-download))))) + (insert "LOADING IMAGE... (use 'u' to cancel)")) + (elpher-get-selector address + (lambda (proc event) + (unless (string-prefix-p "deleted" event) + (let ((image (create-image + elpher-selector-string + nil t))) + (elpher-with-clean-buffer + (insert-image image) + (elpher-restore-pos))))))) + (elpher-get-node-download)))) ;; Search retrieval -- 2.20.1