[emacs][bashrc] Various web changes

- emacs as web browser
- libfic download
- fix pdf-merge

3 files changed, 203 insertions, 2 deletions

diff --git a/emacs/.emacs.d/lisp/my/my-libgen.el b/emacs/.emacs.d/lisp/my/my-libgen.el
index 6b65eb1..67e0071 100644
--- a/emacs/.emacs.d/lisp/my/my-libgen.el
+++ b/emacs/.emacs.d/lisp/my/my-libgen.el
@@ -251,5 +251,121 @@
       (filesize-human . ,filesize-human)
       (extension . ,extension))))
 
+(defvar my-libfic-download-dir "~/Downloads")
+(defun my-libfic-search (query)
+  (interactive "sQuery: ")
+  (generic-search-open
+   (mapcar 'my-libfic-search-parse-tr
+           (cdr
+            (dom-by-tag
+             (my-url-fetch-dom
+              (format "%s/fiction/?q=%s"
+                      my-libgen-host query))
+             'tr)))
+   (format "libfic-query:%s" query)
+   `((formatter . my-libfic-search-format-result)
+     (default-action . my-grok-libfic-action)
+     (keymap . ,my-libfic-button-keymap))))
+
+(defun my-libfic-search-parse-tr (tr)
+  (let* ((tds (dom-by-tag tr 'td))
+         (author (string-trim (dom-texts (pop tds) "")))
+         (series (dom-text (pop tds)))
+         (title-id (pop tds))
+         (title-md5 (car (dom-by-tag title-id 'a)))
+         (title (dom-text title-md5))
+         (md5 (elt (split-string (or (dom-attr title-md5 'href) "") "/") 2))
+         (identifier (dom-text (dom-by-class title-id "catalog_identifier")))
+         (language (dom-text (pop tds)))
+         (extension-filesize-human (split-string (dom-text (pop tds)) " / "))
+         (extension (downcase (car extension-filesize-human)))
+         (filesize-human (cadr extension-filesize-human))
+         )
+    `((author . ,author)
+      (series . ,series)
+      (md5 . ,md5)
+      (title . ,title)
+      (identifier . ,identifier)
+      (language . ,language)
+      (filesize-human . ,filesize-human)
+      (extension . ,extension))))
+
+(defun my-libfic-search-format-result (info)
+  (format
+   "%s [%s]  %s"
+   (my-libfic-format-filename info)
+   (alist-get 'language info)
+   (alist-get 'filesize-human info)))
+
+(defun my-libfic-format-filename (info)
+  (replace-regexp-in-string "[:;]" "_"
+                            (format
+                             "%s - %s (%s) [%s].%s"
+                             (alist-get 'author info)
+                             (alist-get 'title info)
+                             (alist-get 'series info)
+                             (alist-get 'identifier info)
+                             (alist-get 'extension info))))
+
+(defun my-grok-libfic-action (info)
+  (interactive)
+  (my-org-create-node
+   (my-grok-libfic-make-info
+    (my-libfic-update-info info))
+   t))
+
+(defun my-libfic-update-info (info)
+  (when-let ((tr-id
+              (seq-find
+               (lambda (tr)
+                 (equal "ID:" (dom-text (car (dom-by-tag tr 'td)))))
+               (dom-by-tag
+                (my-url-fetch-dom
+                 (format "%s/fiction/%s" my-libgen-host (alist-get 'md5 info)))
+                'tr))))
+    `((id . ,(dom-text (cadr (dom-by-tag tr-id 'td)))) . ,info)))
+
+;;; todo: description; publisher; cover
+(defun my-grok-libfic-make-info (info)
+  (list
+   (cons "libfic-id" (alist-get 'id info))
+   (cons "Title" (alist-get 'title info))
+   (cons "Series" (alist-get 'series info))
+   (cons "Authors" (alist-get 'author info))
+   (cons "ISBN" (alist-get 'identifier info))
+   (cons "Language" (alist-get 'language info))
+   (cons "Filesize-human" (alist-get 'filesize-human info))
+   (cons "Extension" (alist-get 'extension info))
+   (cons "md5" (alist-get 'md5 info))))
+
+(defvar my-libfic-button-keymap
+  (let ((kmap (make-sparse-keymap)))
+    (set-keymap-parent kmap button-map)
+    (define-key kmap "d" 'my-libfic-download-action)
+    (define-key kmap "p" 'my-libfic-show-more-info)
+    kmap))
+
+(defun my-libfic-show-more-info ()
+  (interactive)
+  (let ((info (get-text-property (point) 'button-data)))
+    (pp (my-grok-libfic-make-info (my-libfic-update-info info)))))
+
+(defun my-libfic-download-action ()
+  (interactive)
+  (let ((info (get-text-property (point) 'button-data)))
+    (my-wget-async
+     (my-libfic-make-download-link-onion
+      (my-libfic-update-info info))
+     (format "%s/%s" (expand-file-name my-libfic-download-dir)
+             (my-libfic-format-filename info)))))
+
+(defun my-libfic-make-download-link-onion (info)
+  (let ((id-head (substring (alist-get 'id info) 0 -3)))
+    (format "%s/FF/%s%s/%s"
+            my-libgen-onion-host
+            (make-string (- 4 (length id-head)) ?0)
+            id-head
+            (downcase (alist-get 'md5 info)))))
+
 (provide 'my-libgen)
 ;;; my-libgen.el ends here
diff --git a/emacs/.emacs.d/lisp/my/my-web.el b/emacs/.emacs.d/lisp/my/my-web.el
index 3aaddb8..95592fd 100644
--- a/emacs/.emacs.d/lisp/my/my-web.el
+++ b/emacs/.emacs.d/lisp/my/my-web.el
@@ -150,7 +150,6 @@
 
 ;;; webgetter
 (require 'my-net)
-(require 'luwak)
 (defun my-open-spectator-au (url &optional no-overwrite)
   (interactive "sspectator.com.au link: ")
   (let ((url-request-extra-headers '(("X-Forwarded-For" . "66.249.66.1")))
@@ -164,7 +163,40 @@
               (my-make-file-name-from-url url)
               my-download-dir))))
       (url-copy-file url file-name (not no-overwrite))
-      (luwak-open (format "file://%s" file-name)))))
+      (browse-url-firefox (format "file://%s" file-name)))))
+
+(defun my-mastodon-url-p (url)
+  "Guess if a url is a mastodon post.
+e.g. https://hostux.social/@fsf/113709722998924141
+"
+  (pcase-let* ((urlobj (url-generic-parse-url url))
+               (`(,path . _) (url-path-and-query urlobj)))
+    (string-match-p "^/@[^/]+/[0-9]\\{18\\}$" path)))
+
+(defun my-hacker-news-url-p (url)
+  "Check if a url is a hacker news post.
+e.g. https://news.ycombinator.com/item?id=42505454"
+  (let ((urlobj (url-generic-parse-url url)))
+    (and (equal "news.ycombinator.com" (url-host urlobj))
+         (string-match-p "^/item\\?id=[0-9]+$" (url-filename urlobj)))))
+
+(defun my-stack-overflow-url-p (url)
+  "Guess whether a url stack overflow question
+e.g.
+https://emacs.stackexchange.com/questions/40887/in-org-mode-how-do-i-link-to-internal-documentation"
+  (pcase-let* ((urlobj (url-generic-parse-url url))
+               (`(,path . _) (url-path-and-query urlobj)))
+    (string-match-p "^/questions/[0-9]+/.+$" path))  )
+
+(advice-add 'server-visit-files :around #'my-ec-handle-http)
+(defun my-ec-handle-http (orig-fun files client &rest args)
+  ;; (message "GOT %s" files)
+  (dolist (var files)
+    (let ((fname (expand-file-name (car var))))
+      (when (string-match ".*/\\(https?:/\\)" fname)
+        (browse-url (replace-match "\\1/" nil nil fname))
+        (setq files (delq var files)))))
+  (apply orig-fun files client args))
 
 (provide 'my-web)
 ;;; my-web.el ends here
diff --git a/emacs/.emacs.d/lisp/my/reddio.el b/emacs/.emacs.d/lisp/my/reddio.el
new file mode 100644
index 0000000..2198e43
--- /dev/null
+++ b/emacs/.emacs.d/lisp/my/reddio.el
@@ -0,0 +1,53 @@
+;;; reddio.el -- reddit client through reddio -*- lexical-binding: t -*-
+
+;; Copyright (C) 2024  Free Software Foundation, Inc.
+
+;; Author: Yuchen Pei <id@ypei.org>
+;; Package-Requires: ((emacs "29.4"))
+
+;; This file is part of dotted.
+
+;; dotted 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.
+
+;; dotted 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 dotted.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; reddit client through reddio.
+
+;;; Code:
+
+(defvar reddio-buffer "*reddio*")
+
+(defun reddio-open-url (url)
+  (interactive "sReddit link: ")
+  (when (string-match "/\\(comments/[^/]+\\)/" url)
+    (with-current-buffer (get-buffer-create reddio-buffer)
+      (let ((inhibit-read-only t))
+        (erase-buffer)
+        (when (= 0 (call-process "reddio" nil reddio-buffer nil "print"
+                                 (match-string 1 url)))
+          (goto-char (point-min)))
+        (delete-trailing-whitespace))
+      (text-mode)
+      (view-mode))
+    (display-buffer reddio-buffer)))
+
+(defun reddio-reddit-url-p (url)
+  "e.g.
+https://www.reddit.com/r/linux/comments/cs3os6/introducing_reddio_a_commandline_interface_for/"
+  (let ((urlobj (url-generic-parse-url url)))
+    (and (string-match-p "^.*\\<reddit.com$" (url-host urlobj))
+         (string-match-p "^/r/[^/]+/comments/[^/]+/.+$" (url-filename urlobj)))))
+
+(provide 'reddio)
+;;; reddio.el ends here