From 093ffa5fbf7143f4668bb0a3dc9659a5cc836e12 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <id@ypei.org>
Date: Sat, 17 Jun 2023 17:20:29 +1000
Subject: Moving things one level deeper

To ease gnu stow usage. Now we can do

stow -t ~ emacs
---
 emacs/.emacs.d/lisp/my/my-net.el | 113 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 emacs/.emacs.d/lisp/my/my-net.el

(limited to 'emacs/.emacs.d/lisp/my/my-net.el')

diff --git a/emacs/.emacs.d/lisp/my/my-net.el b/emacs/.emacs.d/lisp/my/my-net.el
new file mode 100644
index 0000000..7713dba
--- /dev/null
+++ b/emacs/.emacs.d/lisp/my/my-net.el
@@ -0,0 +1,113 @@
+;;; 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
-- 
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