Add script to update the Ada single header package

Author: bbayles

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["cffi", "setuptools", "wheel"]
+requires = ["cffi", "setuptools", "urllib3>=2.0.2", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.black]

update_ada.py

@@ -0,0 +1,28 @@
+"""
+update_ada.py
+
+Run this script to pull in the latest version of `ada-url/ada` single
+header package.
+"""
+from io import BytesIO
+from os.path import dirname, join
+from zipfile import ZipFile
+
+from certifi import where
+from urllib3 import PoolManager
+
+
+RELEASE_URL = 'https://github.com/ada-url/ada/releases/latest/download/singleheader.zip'
+TARGET_DIR = join(dirname(__file__), 'ada_url/')
+
+
+def main():
+    http_client = PoolManager(cert_reqs='CERT_REQUIRED', ca_certs=where())
+    resp = http_client.request('GET', RELEASE_URL)
+    with BytesIO(resp.data) as f, ZipFile(f) as z:
+        for file_name in ('ada.cpp', 'ada.h', 'ada_c.h'):
+            z.extract(file_name, TARGET_DIR)
+
+
+if __name__ == '__main__':
+    main()