From c9f3d21b4115ee01b7fb31d942e265b224c76060 Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@freedombone.net>
Date: Tue, 20 Oct 2020 10:43:30 +0100
Subject: [PATCH] Support xor in hashtag rules

---
 newsdaemon.py | 17 ++++++++++++++++-
 tests.py      |  2 +-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/newsdaemon.py b/newsdaemon.py
index 3b329759..91229b2f 100644
--- a/newsdaemon.py
+++ b/newsdaemon.py
@@ -136,6 +136,21 @@ def hashtagRuleResolve(tree: [], hashtags: [], moderated: bool,
                 if argValue:
                     return True
             return False
+    elif tree[0] == 'xor':
+        if len(tree) >= 3:
+            trueCtr = 0
+            for argIndex in range(1, len(tree)):
+                argValue = False
+                if isinstance(tree[argIndex], str):
+                    argValue = (tree[argIndex] in hashtags)
+                elif isinstance(tree[argIndex], list):
+                    argValue = hashtagRuleResolve(tree[argIndex],
+                                                  hashtags, moderated,
+                                                  content)
+                if argValue:
+                    trueCtr += 1
+            if trueCtr == 1:
+                return True
     elif tree[0].startswith('#') and len(tree) == 1:
         return tree[0] in hashtags
     elif tree[0].startswith('moderated'):
@@ -239,7 +254,7 @@ def newswireHashtagProcessing(session, baseDir: str, postJsonObject: {},
     content = content.lower()
 
     # actionOccurred = False
-    operators = ('not', 'and', 'or', 'contains')
+    operators = ('not', 'and', 'or', 'xor', 'contains')
     for ruleStr in rules:
         if not ruleStr:
             continue
diff --git a/tests.py b/tests.py
index 6e06fd9a..0bc9ea0d 100644
--- a/tests.py
+++ b/tests.py
@@ -2177,7 +2177,7 @@ def testRemoveHtmlTag():
 
 def testHashtagRuleTree():
     print('testHashtagRuleTree')
-    operators = ('not', 'and', 'or', 'contains')
+    operators = ('not', 'and', 'or', 'xor', 'contains')
 
     moderated = True
     conditionsStr = \