webdl: Allow XDG_CACHE_HOME to override default of ~/.cache

diff --git a/common.py b/common.py
index 2a5e378ad54ed906afb19b3250862858ed22853d..214e0159b77e11025da3bb4560b62898cc47a572 100644 (file)
--- a/common.py
+++ b/common.py
@@ -24,7 +24,7 @@ try:
 except ImportError:
     pass
 
-CACHE_DIR = os.path.expanduser("~/.cache/webdl")
+CACHE_DIR = os.path.join(os.environ.get("XDG_CACHE_HOME", os.path.expanduser("~/.cache")), "webdl")
 USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:21.0) Gecko/20100101 Firefox/21.0"
 
 class Node(object):