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-;;; my-net.el -- Network related extensions for emacs core -*- 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:
-
-;; Network related extensions for emacs core.
-
-;;; Code:
-
-
-;;; net utilities
-(defvar my-download-dir "~/Downloads")
-
-(defun my-make-file-name-from-url (url)
- (file-name-nondirectory
- (directory-file-name
- (car (url-path-and-query (url-generic-parse-url
- (url-unhex-string url)))))))
-
-(defun my-fetch-url (url)
- (interactive "sURL: ")
- (let ((file-name (expand-file-name (my-make-file-name-from-url url)
- my-download-dir)))
- (url-retrieve url 'my-fetch-url-save-and-switch (list file-name))))
-
-(defun my-fetch-url-save-and-switch (status file-name)
- (unless (plist-get status :error)
- (my-delete-http-header)
- (write-file file-name)
- (let ((coding-system-for-read 'utf-8))
- (revert-buffer t t))
- (switch-to-buffer (current-buffer))))
-
-(defun my-kill-http-header ()
- (my-skip-http-header)
- (let ((killed (buffer-substring-no-properties (point-min) (point))))
- (delete-region (point-min) (point))
- killed))
-
-(defun my-parse-http-header (text)
- (let ((status) (fields))
- (with-temp-buffer
- (insert text)
- (goto-char (point-min))
- (re-search-forward "^HTTP.*\\([0-9]\\{3\\}\\).*$")
- (setq status (match-string 1))
- (while (re-search-forward "^\\(.*?\\): \\(.*\\)$" nil t)
- (push (cons (intern (match-string 1)) (match-string 2)) fields)))
- (list (cons 'status status) (cons 'fields fields))))
-
-(defvar my-client-buffer-name "*my-api*")
-
-(defun my-url-fetch-json (url &optional decompression with-header)
- (my-url-fetch-internal
- url
- (lambda ()
- (json-read-from-string (decode-coding-string (buffer-string) 'utf-8)))
- decompression
- with-header))
-
-(defun my-url-fetch-dom (url &optional decompression with-header)
- (my-url-fetch-internal
- url
- (lambda () (libxml-parse-html-region (point) (point-max)))
- decompression
- with-header))
-
-(defun my-url-fetch-internal (url buffer-processor decompression with-header)
- (with-current-buffer (get-buffer-create my-client-buffer-name)
- (goto-char (point-max))
- (insert "[" (current-time-string) "] Request: " url "\n"))
- (with-current-buffer (url-retrieve-synchronously url t)
- (let ((header (my-kill-http-header)) (status) (fields))
- (goto-char (point-min))
- (setq header (my-parse-http-header header)
- status (alist-get 'status header)
- fields (alist-get 'fields header))
- (with-current-buffer my-client-buffer-name
- (insert "[" (current-time-string) "] Response: " status "\n"))
- (when decompression
- (call-process-region (point) (point-max) "gunzip" t t t)
- (goto-char (point-min)))
- (call-interactively 'delete-trailing-whitespace)
- (if (string= status "200")
- (unless (= (point) (point-max))
- (if with-header
- (list
- (cons 'header fields)
- (cons 'json (funcall buffer-processor)))
- (funcall buffer-processor)))
- (error "HTTP error: %s" (buffer-substring (point) (point-max)))))))
-
-(provide 'my-net)
-;;; my-net.el ends here