feat: 为 img 标签添加 referrerpolicy 属性，处理裂图问题。

mkdocs.py

@@ -13,11 +13,6 @@ def _main():
     ]
     proxy_url = "http://127.0.0.1:8091/proxy?url={url}"
     proxy_urls = [
-        "https://static001.geekbang.org/resource/image",
-        "https://static001.geekbang.org/resource/avatar",
-        "https://static001-test.geekbang.org/resource/image",
-        "https://static001.infoq.cn/resource/image",
-        "https://static001.geekbang.org/con",
     ]
     all = []
     docs_dir = Path(__file__).parent.joinpath('dist')

mkdocs_template.yml

@@ -68,6 +68,7 @@ extra_css:
 extra_javascript:
   - javascript/extra.js
   - javascript/giscus.js
+  - javascript/referrerpolicy.js
 
 markdown_extensions:
   - admonition

overrides/javascript/referrerpolicy.js

@@ -0,0 +1,21 @@
+const policy = 'no-referrer';
+const noRefererPrefixes = [
+	'https://static001.geekbang.org/resource/image',
+	'https://static001.geekbang.org/resource/avatar',
+	'https://static001-test.geekbang.org/resource/image',
+	'https://static001.infoq.cn/resource/image',
+	'https://static001.geekbang.org/con'
+];
+
+document.querySelectorAll('p>img[src]').forEach((img) => {
+	const src = img.getAttribute('src');
+	if (src) {
+		for (let index = 0; index < noRefererPrefixes.length; index++) {
+			const prefix = noRefererPrefixes[index];
+			if (src.startsWith(prefix)) {
+				img.setAttribute('referrerpolicy', policy);
+				return;
+			}
+		}
+	}
+});