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|
;;; my-hnreader.el -- Extensions to hnreader -*- lexical-binding: t -*-
;; Copyright (C) 2023 Free Software Foundation.
;; Author: Yuchen Pei <id@ypei.org>
;; Package-Requires: ((emacs "28.2"))
;; This file is part of dotfiles.
;; dotfiles is free software: you can redistribute it and/or modify it under
;; the terms of the GNU Affero General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; dotfiles is distributed in the hope that it will be useful, but WITHOUT
;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
;; Public License for more details.
;; You should have received a copy of the GNU Affero General Public
;; License along with dotfiles. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Extensions to hnreader.
;;; Code:
;; To override `hnreader--print-frontpage-item'
(defun my-hnreader--print-frontpage-item (thing subtext)
"Print THING dom and SUBTEXT dom."
(let* ((url (format "https://news.ycombinator.com/item?id=%s" (dom-attr thing 'id)))
(a-node (dom-child-by-tag (dom-by-class thing "^titleline$") 'a))
(title-link (dom-attr a-node 'href)))
(insert (format "\n* %s [[%s][%s]] (%s) [[elisp:(hnreader-comment \"%s\")][%s]]"
;; rank
(dom-text (dom-by-class thing "^rank$"))
title-link
;; title
(dom-text a-node)
;; points
(dom-text (dom-by-class subtext "^score$"))
;; comments
url
(dom-text (last (dom-by-tag subtext 'a)))))
))
;; To override `hnreader--print-frontpage'
(defun my-hnreader--print-frontpage (dom buf url)
"Print raw DOM and URL on BUF."
(let ((things (dom-by-class dom "^athing$"))
(subtexts (dom-by-class dom "^subtext$")))
(with-current-buffer buf
(read-only-mode -1)
(erase-buffer)
(insert "#+STARTUP: overview indent\n")
(hnreader--print-header)
(insert (hnreader--get-route-top-info dom))
(cl-mapcar #'hnreader--print-frontpage-item things subtexts)
;; (setq-local org-confirm-elisp-link-function nil)
(if hnreader--history
(insert "\n* "(format "[[elisp:(hnreader-back)][< Back]]" ) " | ")
(insert "\n* "))
(insert (hnreader--get-morelink dom) " | ")
(insert (format "[[elisp:(hnreader-read-page-back \"%s\")][Reload]]" url) )
(org-mode)
(goto-char (point-min))
(forward-line 2))))
;; To override `hnreader--get-title'
(defun my-hnreader--get-title (dom)
"Get title and link from DOM comment page."
(let ((a-link (dom-by-tag (dom-by-class dom "^titleline$") 'a)))
(cons (dom-text a-link) (dom-attr a-link 'href))))
;; To override `hnreader--print-comments'
(defun my-hnreader--print-comments (dom url)
"Print DOM comment and URL to buffer."
(let ((comments (dom-by-class dom "^athing comtr$"))
(title (hnreader--get-title dom))
(info (hnreader--get-post-info dom))
(more-link (dom-by-class dom "morelink"))
(buffer (my-hnreader-buffer url)))
(with-current-buffer buffer
(read-only-mode -1)
(erase-buffer)
(insert "-*- org -*-\n")
(insert "#+TITLE: " (car title))
(insert (format "\n%s\n" (cdr title)))
(insert (car info))
(when (cdr info)
(insert "\n")
(shr-insert-document (cdr info)))
(dolist (comment comments)
(insert (format "%s %s\n"
(hnreader--get-indent
(hnreader--get-img-tag-width comment))
(hnreader--get-comment-owner comment)))
(shr-insert-document (hnreader--get-comment comment)))
(when more-link
(insert "\n* " (format "[[elisp:(hnreader-comment \"%s\")][More]]" (concat "https://news.ycombinator.com/"
(dom-attr more-link 'href)))))
(insert "\n* " (format "[[elisp:(hnreader-comment \"%s\")][Reload]]" url))
(goto-char (point-min))
(forward-line 2)
(save-buffer))
(switch-to-buffer buffer)))
(defvar my-hnreader-save-dir (locate-user-emacs-file "hn-archive")
"The directory to save hnreader org files.")
(defun my-hnreader-buffer (url)
"Return file name to save to for URL."
(if (string-match
"https://news\\.ycombinator\\.com/item\\?id=\\([0-9]+\\)" url)
(find-file-noselect
(expand-file-name (format "%s.org" (match-string 1 url))
my-hnreader-save-dir))
(error "URL %s not supported." url)))
(provide 'my-hnreader)
;;; my-hnreader.el ends here
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