Add save_directory parameter to backup comment in JSON format.

shreddit.cfg.example

@@ -57,7 +57,9 @@ nuke_hours = 0
 
 # Only delete comments with this score or less, or delete all comments
 # if this is not set.
-
 max_score =
 
+# Save JSON encoded comment to this directory before deleting it.
+save_directory = 
+
 # vim: syntax=config

shreddit.py

@@ -60,10 +60,14 @@ try:
     max_score = config.getint('main', 'max_score')
 except ValueError:
     max_score = None
+save_directory = config.get('main', 'save_directory')
+
 _user = config.get('main', 'username')
 _pass = config.get('main', 'password')
 
 r = praw.Reddit(user_agent="shreddit/3.3")
+if save_directory:
+    r.config.store_json_result = True
 
 def login(user=None, password=None):
     try:
@@ -140,6 +144,12 @@ for thing in things:
                 thing=thing.id, content=thing))
         continue
 
+    if save_directory:
+        if not os.path.exists(save_directory):
+            os.makedirs(save_directory)
+        with open("%s/%s.json" % (save_directory, thing.id), "w") as fh:
+            json.dump(thing.json_dict, fh)
+
     if clear_vote:
         thing.clear_vote()