From f472ad829c3ac4a836f9606e622b0d25759f8c0d Mon Sep 17 00:00:00 2001
From: Rafael Ortiz <rafael@activitycentral.com>
Date: Fri, 15 Jul 2011 17:14:02 +0000
Subject: Remove unfinished downloads

When Browse starts removes all files in the instance directory that where not modified in a long time(1 day).
Since there is no way to pause a download and continue later, this files are failed downloads that should be eliminated.
this is the ''cache'' case of an already fixed issue, by Jose Prous joseprous@gmail.com
---
diff --git a/downloadmanager.py b/downloadmanager.py
index 4eab726..4adf98d 100644
--- a/downloadmanager.py
+++ b/downloadmanager.py
@@ -56,6 +56,8 @@ DS_DBUS_PATH = '/org/laptop/sugar/DataStore'
 _MIN_TIME_UPDATE = 5        # In seconds
 _MIN_PERCENT_UPDATE = 10
 
+_MAX_DELTA_CACHE_TIME = 86400 # In seconds
+
 _active_downloads = []
 _dest_to_window = {}
 
@@ -75,6 +77,15 @@ def remove_all_downloads():
             datastore.delete(download.dl_jobject.object_id)
         download.cleanup()
 
+def remove_old_parts():
+    temp_path = os.path.join(activity.get_activity_root(), 'instance')
+    if os.path.exists(temp_path):
+        for file in os.listdir(temp_path):
+            file_full_path = os.path.join(temp_path, file)
+            modification_time = os.path.getmtime(file_full_path)
+            if(time.time() - modification_time > _MAX_DELTA_CACHE_TIME):
+                logging.debug('removing %s' % file_full_path)
+                os.remove(file_full_path)
 
 class HelperAppLauncherDialog:
     _com_interfaces_ = interfaces.nsIHelperAppLauncherDialog
diff --git a/webactivity.py b/webactivity.py
index 865cbb6..bf20265 100644
--- a/webactivity.py
+++ b/webactivity.py
@@ -200,6 +200,8 @@ class WebActivity(activity.Activity):
 
         _logger.debug('Starting the web activity')
 
+        downloadmanager.remove_old_parts()
+        
         self._force_close = False
         self._tabbed_view = TabbedView()
 
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