Fix download via HTTP/2

update.py

@@ -20,17 +20,17 @@
 def download_svd_data():
     url  = "https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/"
     url += "stm32-32-bit-arm-cortex-mcus.cxst-rs-grid.html/CL1734.cad_models_and_symbols.svd.json"
-    with urlopen(Request(url, headers=_hdr)) as data:
-        json_data = data.read().decode(encoding="utf-8", errors="ignore")
+    cmd = f"curl '{url}' -X 'GET' -s --max-time 60 -o - " + " ".join(f"-H '{k}: {v}'" for k,v in _hdr.items())
+    data = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE).stdout
+    json_data = data.decode(encoding="utf-8", errors="ignore")
     rows = json.loads(json_data)["rows"]
     return [(row["localizedDescriptions"]["en"].split(" ")[0], row["version"],
              "https://www.st.com" + row["localizedLinks"]["en"]) for row in rows]
 
 def download_zip(url, path):
     if path.exists(): path.unlink()
-    with tempfile.NamedTemporaryFile() as outfile:
-        os.system(f'wget -q --user-agent="{_hdr["User-Agent"]}" "{url}" -O {outfile.name}')
-        shutil.copy(outfile.name, str(path))
+    cmd = f"curl '{url}' -X 'GET' --max-time 120 -o {path} " + " ".join(f"-H '{k}: {v}'" for k,v in _hdr.items())
+    assert subprocess.call(cmd, shell=True) == 0
 
 
 def download_families(download = True):