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Diffstat (limited to '.config/nyxt/unpdf.lisp')
| -rw-r--r-- | .config/nyxt/unpdf.lisp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/.config/nyxt/unpdf.lisp b/.config/nyxt/unpdf.lisp new file mode 100644 index 0000000..8b46457 --- /dev/null +++ b/.config/nyxt/unpdf.lisp @@ -0,0 +1,86 @@ +(in-package #:nyxt-user) + +;; I'm definining a new scheme to redirect PDF requests to. What it does is: +;; - Get the original file (if the URL is a filesystem path, simply use it). +;; - Save it to disk (if remote). +;; - Run pdftotext over the file. +;; - Display pdftotext output in a nice HTML page with interlinkable +;; page numbers and page contents as <pre> tags. +(define-internal-scheme "unpdf" + (lambda (url buffer) + (let* ((url (quri:uri url)) + (original-url (quri:uri (quri:url-decode (quri:uri-path url)))) + (local-p (or (null (quri:uri-scheme original-url)) + (string= "file" (quri:uri-scheme original-url)))) + (original-content (unless local-p + (dex:get (quri:render-uri original-url) :force-binary t)))) + (flet ((display-pdf-contents (file) + (if (uiop:file-exists-p file) + (let ((pages (ignore-errors + (uiop:split-string + (uiop:run-program `("pdftotext" "-nodiag" ,(uiop:native-namestring file) "-") + :output '(:string :stripped t)) + :separator '(#\Page))))) + (spinneret:with-html-string + (:head + (:style (style buffer)) + ;; A class to override the <pre> colors. + (:style (theme:themed-css (theme *browser*) + #+(or nyxt-2 nyxt-3-pre-release-1) + (.override + :background-color theme:background + :color theme:on-background + :font-size "150%" + :line-height "150%") + #+(and nyxt-3 (not (or nyxt-2 nyxt-3-pre-release-1))) + `(.override + :background-color ,theme:background + :color ,theme:on-background + :font-size "150%" + :line-height "150%")))) + (loop for page in pages + for number from 1 + unless (uiop:emptyp page) + do (:section + :id (princ-to-string number) + (:h2.override (:a :href (format nil "#~d" number) + (princ-to-string number))) + (:pre.override (or page "")))))) + ""))) + (if local-p + (display-pdf-contents (pathname (quri:uri-path original-url))) + (uiop:with-temporary-file (:pathname path :type "pdf" :keep t) + (log:debug "Temp file for ~a is ~a" url path) + (alexandria:write-byte-vector-into-file + (coerce original-content '(vector (unsigned-byte 8))) path :if-exists :supersede) + (display-pdf-contents path)))))) + :local-p t) + +(define-command-global unpdf-download-this () + "A helper for unpdf: pages to download the original PDF to the regular destination. + +Unpdf redirects all requests, even those that you need to read +elsewhere, thus I need this command." + (let* ((buffer (current-buffer)) + (url (url buffer))) + (if (string= "unpdf" (quri:uri-scheme url)) + (ffi-buffer-download buffer (quri:uri-path url)) + ;; I need to turn it into a mode someday... + (echo-warning "This command is for unpdf: pages only, it's useless elsewhere!")))) + +(defun redirect-pdf (request-data) + (if (and (toplevel-p request-data) + (uiop:string-prefix-p "application/pdf" (mime-type request-data))) + ;; I should somehow prompt about downloading instead... + (progn + (echo "Redirecting to the unpdf URL...") + (make-buffer-focus :url (quri:uri (str:concat "unpdf:" (render-url (url request-data))))) + ;; Return nil to prevent Nyxt from downloading this PDF. + nil) + request-data)) + +(define-configuration :web-buffer + ((request-resource-hook (hooks:add-hook %slot-value% 'redirect-pdf)))) + +(define-configuration nyxt/mode/file-manager:file-source + ((supported-media-types `("pdf" ,@%slot-value%)))) |