sq: adding '-~' op - No tests yet

fmf/base.py

@@ -204,6 +204,33 @@ def _merge_regexp(self, data, key, value):
                     "MergeError: Key '{0}' in {1} (wrong type).".format(
                         key, self.name))
 
+    import pysnooper
+
+    @pysnooper.snoop()
+    def _merge_minus_regexp(self, data, key, value):
+        """ Handle removing current values if they match regexp """
+        # A bit faster but essentially `any`
+        def lazy_any_search(item, patterns):
+            for p in patterns:
+                if re.search(p, item):
+                    return True
+            return False
+        if isinstance(value, str):
+            value = [value]
+        if isinstance(data[key], list):
+            data[key] = [item for item in data[key] if not lazy_any_search(item, value)]
+        elif isinstance(data[key], str):
+            if lazy_any_search(data[key], value):
+                data[key] = ''
+        elif isinstance(data[key], dict):
+            for k in list(data.keys()):
+                if lazy_any_search(k, value):
+                    data[key].pop(k, None)
+        else:
+            raise utils.MergeError(
+                "MergeError: Key '{0}' in {1} (wrong type).".format(
+                    key, self.name))
+
     def _merge_minus(self, data, key, value):
         """ Handle reducing attributes using the '-' suffix """
         # Cannot reduce attribute if key is not present in parent
@@ -238,6 +265,8 @@ def _merge_special(self, data, source):
                 self._merge_plus(data, key.rstrip('+'), value)
             elif key.endswith('+<'):
                 self._merge_plus(data, key.rstrip('+<'), value, prepend=True)
+            elif key.endswith('-~'):
+                self._merge_minus_regexp(data, key.rstrip('-~'), value)
             elif key.endswith('-'):
                 self._merge_minus(data, key.rstrip('-'), value)
             elif key.endswith('~'):