Fix html link transcoder
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louie
parent
fbf45e6df8
commit
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1 changed files with 62 additions and 142 deletions
204
anki-editor.el
204
anki-editor.el
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@ -64,6 +64,7 @@
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(require 'json)
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(require 'org-element)
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(require 'ox)
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(require 'ox-html)
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(require 'request)
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(defconst anki-editor-prop-note-type "ANKI_NOTE_TYPE")
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@ -196,14 +197,16 @@ The result is the path to the newly stored media file."
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(defun anki-editor-setup-minor-mode ()
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"Set up this minor mode."
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(add-hook 'org-property-allowed-value-functions #'anki-editor--get-allowed-values-for-property)
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(advice-add 'org-set-tags :before #'anki-editor--before-set-tags))
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(advice-add 'org-set-tags :before #'anki-editor--before-set-tags)
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(advice-add 'org-html-link :around #'anki-editor--ox-html-link))
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(defun anki-editor-teardown-minor-mode ()
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"Tear down this minor mode."
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(remove-hook 'org-property-allowed-value-functions #'anki-editor--get-allowed-values-for-property)
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(advice-remove 'org-set-tags #'anki-editor--before-set-tags)
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(when (advice-member-p 'anki-editor--get-buffer-tags #'org-get-buffer-tags)
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(advice-remove 'org-get-buffer-tags #'anki-editor--get-buffer-tags)))
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(advice-remove 'org-get-buffer-tags #'anki-editor--get-buffer-tags))
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(advice-remove 'org-html-link #'anki-editor--ox-html-link))
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;;; Commands
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@ -527,8 +530,7 @@ Do nothing when JUST-ALIGN is non-nil."
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(org-export-create-backend
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:parent 'html
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:transcoders '((latex-fragment . anki-editor--ox-latex)
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(latex-environment . anki-editor--ox-latex)
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(link . anki-editor--ox-link))))
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(latex-environment . anki-editor--ox-latex))))
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(defconst anki-editor--anki-latex-syntax-map
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`((,(format "^%s" (regexp-quote "$$")) . "[$$]")
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@ -564,145 +566,63 @@ CONTENTS is nil. INFO is a plist holding contextual information."
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(replace-regexp-in-string "}}" "} } " code)
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code)))
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;; FIXME: since some functions get added and some get removed in
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;; differenct versions of Org, this is going to break
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(defun anki-editor--ox-link (link desc info)
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"Transcode a LINK object from Org to HTML.
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DESC is the description part of the link, or the empty string.
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INFO is a plist holding contextual information. THE
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IMPLEMENTATION IS BASICALLY COPIED AND SIMPLIFIED FROM
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ox-html.el :)"
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(let* ((type (org-element-property :type link))
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(raw-path (org-element-property :path link))
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;; Ensure DESC really exists, or set it to nil.
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(desc (org-string-nw-p desc))
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(path
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(defun anki-editor--ox-html-link (oldfun link desc info)
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"When LINK is a link to local file, transcodes it to html and stores the target file to Anki, otherwise calls OLDFUN for help.
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The implementation is borrowed and simplified from ox-html."
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(or (catch 'giveup
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(let* ((type (org-element-property :type link))
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(raw-path (org-element-property :path link))
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(desc (org-string-nw-p desc))
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(path
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(cond
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((string= type "file")
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;; Possibly append `:html-link-home' to relative file
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;; name.
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(let ((inhibit-message nil)
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(home (and (plist-get info :html-link-home)
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(org-trim (plist-get info :html-link-home)))))
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(when (and home
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(plist-get info :html-link-use-abs-url)
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(file-name-absolute-p raw-path))
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(setq raw-path (concat (file-name-as-directory home) raw-path)))
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(message "Storing media file to Anki for %s..." raw-path)
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;; storing file to Anki and return the modified path
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(anki-editor--anki-connect-store-media-file (expand-file-name (url-unhex-string raw-path)))))
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(t (throw 'giveup nil))))
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(attributes-plist
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(let* ((parent (org-export-get-parent-element link))
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(link (let ((container (org-export-get-parent link)))
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(if (and (eq (org-element-type container) 'link)
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(org-html-inline-image-p link info))
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container
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link))))
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(and (eq (org-element-map parent 'link 'identity info t) link)
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(org-export-read-attribute :attr_html parent))))
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(attributes
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(let ((attr (org-html--make-attribute-string attributes-plist)))
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(if (org-string-nw-p attr) (concat " " attr) ""))))
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(cond
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((member type '("http" "https" "ftp" "mailto" "news"))
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(url-encode-url (org-link-unescape (concat type ":" raw-path))))
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((string= type "file")
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;; Possibly append `:html-link-home' to relative file
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;; name.
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(let ((home (and (plist-get info :html-link-home)
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(org-trim (plist-get info :html-link-home)))))
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(when (and home
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(plist-get info :html-link-use-abs-url)
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(file-name-absolute-p raw-path))
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(setq raw-path (concat (file-name-as-directory home) raw-path)))
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(message "Storing media file to Anki for %s..." raw-path)
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(anki-editor--anki-connect-store-media-file (expand-file-name (url-unhex-string raw-path)))))
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(t raw-path)))
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;; Extract attributes from parent's paragraph. HACK: Only do
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;; this for the first link in parent (inner image link for
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;; inline images). This is needed as long as attributes
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;; cannot be set on a per link basis.
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(attributes-plist
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(let* ((parent (org-export-get-parent-element link))
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(link (let ((container (org-export-get-parent link)))
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(if (and (eq (org-element-type container) 'link)
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(org-html-inline-image-p link info))
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container
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link))))
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(and (eq (org-element-map parent 'link 'identity info t) link)
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(org-export-read-attribute :attr_html parent))))
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(attributes
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(let ((attr (org-html--make-attribute-string attributes-plist)))
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(if (org-string-nw-p attr) (concat " " attr) ""))))
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(cond
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;; Image file.
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((and (plist-get info :html-inline-images)
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(org-export-inline-image-p
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link (plist-get info :html-inline-image-rules)))
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(org-html--format-image path attributes-plist info))
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;; Radio target: Transcode target's contents and use them as
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;; link's description.
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((string= type "radio")
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(let ((destination (org-export-resolve-radio-link link info)))
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(if (not destination) desc
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(format "<a href=\"#%s\"%s>%s</a>"
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(org-export-get-reference destination info)
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attributes
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desc))))
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;; Links pointing to a headline: Find destination and build
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;; appropriate referencing command.
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((member type '("custom-id" "fuzzy" "id"))
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(let ((destination (if (string= type "fuzzy")
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(org-export-resolve-fuzzy-link link info)
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(org-export-resolve-id-link link info))))
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(pcase (org-element-type destination)
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;; ID link points to an external file.
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(`plain-text
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(let ((fragment (concat "ID-" path)))
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(format "<a href=\"%s#%s\"%s>%s</a>"
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destination fragment attributes (or desc destination))))
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;; Fuzzy link points nowhere.
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(`nil
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(format "<i>%s</i>"
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(or desc
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(org-export-data
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(org-element-property :raw-link link) info))))
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;; Link points to a headline.
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(`headline
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(let ((href (or (org-element-property :CUSTOM_ID destination)
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(org-export-get-reference destination info)))
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;; What description to use?
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(desc
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;; Case 1: Headline is numbered and LINK has no
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;; description. Display section number.
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(if (and (org-export-numbered-headline-p destination info)
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(not desc))
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(mapconcat #'number-to-string
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(org-export-get-headline-number
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destination info) ".")
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;; Case 2: Either the headline is un-numbered or
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;; LINK has a custom description. Display LINK's
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;; description or headline's title.
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(or desc
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(org-export-data
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(org-element-property :title destination) info)))))
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(format "<a href=\"#%s\"%s>%s</a>" href attributes desc)))
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;; Fuzzy link points to a target or an element.
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(_
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(let* ((ref (org-export-get-reference destination info))
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(number (cond
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(desc nil)
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((org-html-standalone-image-p destination info)
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(org-export-get-ordinal
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(org-element-map destination 'link
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#'identity info t)
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info 'link 'org-html-standalone-image-p))
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(t (org-export-get-ordinal
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destination info nil 'org-html--has-caption-p))))
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(desc (cond (desc)
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((not number) "No description for this link")
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((numberp number) (number-to-string number))
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(t (mapconcat #'number-to-string number ".")))))
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(format "<a href=\"#%s\"%s>%s</a>" ref attributes desc))))))
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;; Coderef: replace link with the reference name or the
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;; equivalent line number.
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((string= type "coderef")
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(let ((fragment (concat "coderef-" (org-html-encode-plain-text path))))
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(format "<a href=\"#%s\" %s%s>%s</a>"
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fragment
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(format "class=\"coderef\" onmouseover=\"CodeHighlightOn(this, \
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'%s');\" onmouseout=\"CodeHighlightOff(this, '%s');\""
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fragment fragment)
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attributes
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(format (org-export-get-coderef-format path desc)
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(org-export-resolve-coderef path info)))))
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;; External link with a description part.
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((and path desc) (format "<a href=\"%s\"%s>%s</a>"
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(org-html-encode-plain-text path)
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attributes
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desc))
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;; External link without a description part.
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(path (let ((path (org-html-encode-plain-text path)))
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(format "<a href=\"%s\"%s>%s</a>"
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path
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attributes
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(org-link-unescape path))))
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;; No path, only description. Try to do something useful.
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(t (format "<i>%s</i>" desc)))))
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;; Image file.
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((and (plist-get info :html-inline-images)
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(org-export-inline-image-p
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link (plist-get info :html-inline-image-rules)))
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(org-html--format-image path attributes-plist info))
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;; External link with a description part.
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((and path desc) (format "<a href=\"%s\"%s>%s</a>"
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(org-html-encode-plain-text path)
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attributes
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desc))
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;; External link without a description part.
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(path (let ((path (org-html-encode-plain-text path)))
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(format "<a href=\"%s\"%s>%s</a>"
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path
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attributes
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(org-link-unescape path))))
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(t (throw 'giveup nil)))))
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(funcall oldfun link desc info)))
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;;; Utilities
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