Move requests code out of common.py, closes #114

fdroidserver/net.py

@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+#
+# net.py - part of the FDroid server tools
+# Copyright (C) 2015 Hans-Christoph Steiner <hans@eds.org>
+#
+# This program 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.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+
+import requests
+
+
+def download_file(url, local_filename=None, dldir='tmp'):
+    filename = url.split('/')[-1]
+    if local_filename is None:
+        local_filename = os.path.join(dldir, filename)
+    # the stream=True parameter keeps memory usage low
+    r = requests.get(url, stream=True)
+    with open(local_filename, 'wb') as f:
+        for chunk in r.iter_content(chunk_size=1024):
+            if chunk:  # filter out keep-alive new chunks
+                f.write(chunk)
+                f.flush()
+    return local_filename