From 6c667461b45e93059c6f801e485f7da4bfc3606c Mon Sep 17 00:00:00 2001
From: stardiviner <numbchild@gmail.com>
Date: Fri, 29 May 2020 09:46:15 +0800
Subject: [PATCH] * org-attach.el: add a new command to archive web page

* lisp/org-attach.el (org-attach-url-archive): A new org-attach
dispatcher command to archive web page to a single file.

* lisp/org-agenda.el (org-attach-url-archive-command): A customize
option to specify external command for archiving web page.

* lisp/org-attach.el (org-attach-url-archive-page): A command
invoke external command to offline archive save web page.
---
 lisp/org-attach.el | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/lisp/org-attach.el b/lisp/org-attach.el
index 57d1360fc..80855d147 100644
--- a/lisp/org-attach.el
+++ b/lisp/org-attach.el
@@ -204,6 +204,8 @@ (defcustom org-attach-commands
      "Attach a file using symbolic-link method.")
     ((?u ?\C-u) org-attach-url
      "Attach a file from URL (downloading it).")
+    ((?U) org-attach-url-archive
+     "Attach an offline version of web page URL.")
     ((?b) org-attach-buffer
      "Select a buffer and attach its contents to the task.")
     ((?n ?\C-n) org-attach-new
@@ -467,6 +469,31 @@ (defun org-attach-url (url)
   (let ((org-attach-method 'url))
     (org-attach-attach url)))
 
+(defun org-attach-url-archive (url)
+  (interactive "MURL of the web page be archived to attach: \n")
+  (let ((org-attach-method 'archive))
+    (org-attach-attach url)))
+
+(defcustom org-attach-url-archive-command
+  (file-name-nondirectory (executable-find "monolith"))
+  "The command used to offline archive web page.
+monolith can be found here: https://github.com/Y2Z/monolith."
+  :type 'string
+  :safe #'stringp
+  :group 'org-attach)
+
+(defun org-attach-url-archive-page (url target-file)
+  "Save an offline archive of web page."
+  (pcase org-attach-url-archive-command
+    ("monolith"
+     (make-process
+      :name "org-attach-offline"
+      :command (list org-attach-url-archive-command url "-o" target-file)
+      :sentinel (lambda (proc event) (message "org-attach-offline finished!"))
+      :buffer "*org-attach-url-archive*"))
+    (nil (warn "You must have a command availble for offline save web page!
+Set variable `org-attach-url-archive-command'."))))
+
 (defun org-attach-buffer (buffer-name)
   "Attach BUFFER-NAME's contents to current outline node.
 BUFFER-NAME is a string.  Signals a `file-already-exists' error
@@ -504,7 +531,8 @@ (defun org-attach-attach (file &optional visit-dir method)
        ((eq method 'cp) (copy-file file attach-file))
        ((eq method 'ln) (add-name-to-file file attach-file))
        ((eq method 'lns) (make-symbolic-link file attach-file))
-       ((eq method 'url) (url-copy-file file attach-file)))
+       ((eq method 'url) (url-copy-file file attach-file))
+       ((eq method 'archive) (org-attach-url-archive-page file attach-file)))
       (run-hook-with-args 'org-attach-after-change-hook attach-dir)
       (org-attach-tag)
       (cond ((eq org-attach-store-link-p 'attached)
-- 
2.26.2