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-;;; link-gopher.el -- Find and filter urls -*- 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:
-
-;; Find and filter urls.
-
-;;; Code:
-(require 'my-utils)
-
-;;; todo: some of these functions could be unnecessary
-(defun link-gopher-kill-all-links (url filter-regexp)
- (interactive (list (read-string "URL: "
- (thing-at-point-url-at-point))
- (read-string "Regexp: ")))
- (let ((results (link-gopher-get-all-links url filter-regexp)))
- (kill-new (string-join results " "))
- (message "Added %d links to the kill ring!" (length results))))
-(defun link-gopher-kill-all-links-in-buffer (filter-regexp)
- "may not report accurate links e.g. when the link contains special chars like space"
- (interactive "sRegexp: ")
- (let ((links (link-gopher-get-all-links-in-buffer filter-regexp)))
- (kill-new (string-join links " "))
- (message "Added %d links to the kill ring!" (length links))))
-(defun link-gopher-get-all-links (url filter-regexp)
- "get all links satisfying a regexp on url.
-no duplicates."
- (with-current-buffer (url-retrieve-synchronously url)
- (my-skip-http-header)
- (let ((results) (clean-url) (hash (make-hash-table :test 'equal)))
- (while (re-search-forward
- "\\(href\\|HREF\\|src\\|SRC\\)\\ *=\\ *['\"]\\([^\"']+\\)['\"]" nil t)
- (setq clean-url (link-gopher-clean-url (match-string 2) url))
- (when (or (not filter-regexp)
- (string-match filter-regexp clean-url))
- (when (not (gethash clean-url hash))
- (puthash clean-url t hash)
- (push clean-url results))))
- (reverse results))))
-(defun link-gopher-clean-url (url current-url)
- "clean url
- hello - filename: hello
- /hello - type: nil; host: nil; filename: /hello
- //hello - type: nil; host: hello; filename: empty string
-removing frags
-"
- (let* ((current-domain
- (progn (string-match "^\\(.*://[^/]+/\\)" current-url)
- (match-string 1 current-url)))
- (current-domain-dir-path
- (progn (string-match "^\\(.*/\\)" current-url)
- (match-string 1 current-url)))
- (url-no-frags (replace-regexp-in-string "#.*" "" url)))
- (url-encode-url
- (cond ((string-match "://" url-no-frags) url-no-frags)
- ((string-match "^//" url-no-frags) (concat "https:" url-no-frags))
- ((string-match "^/" url-no-frags) (concat current-domain url-no-frags))
- (t (concat current-domain-dir-path url-no-frags))))))
-(defun link-gopher-get-all-links-in-buffer (filter-regexp)
- (let ((results) (hash (make-hash-table :test 'equal)))
- (save-excursion
- (goto-char (point-min))
- (while
- (progn
- (when-let ((url (get-text-property (point) 'shr-url)))
- (when (or (not filter-regexp)
- (string-match filter-regexp url))
- (when (not (gethash url hash))
- (puthash url t hash)
- (push url results))))
- (when-let ((next-change-point
- (next-single-property-change (point) 'shr-url)))
- (goto-char next-change-point)))))
- results))
-
-(defun http-s-links-in-buffer (&optional filter-regexp)
- (save-excursion
- (unless filter-regexp (setq filter-regexp ".*"))
- (let ((results) (url))
- (while (re-search-forward "\\(http\\(s\\)://[^\" \n]+\\)" nil t)
- (setq url (match-string 1))
- (when (and (string-match filter-regexp url)
- (not (member url results)))
- (push url results)))
- (reverse results))))
-
-(defun http-s-media-links-in-buffer ()
- (http-s-links-in-buffer
- "\\.\\(jpg\\|png\\|gif\\|webp\\|mp4\\|flv\\|mkv\\|mov\\|webm\\|ogv\\|avi\\|rmvb\\|mp3\\|ogg\\|opus\\|pdf\\|docx\\|epub\\)$"))
-
-(provide 'link-gopher)
-;;; link-gopher.el ends here
-