updated libs to fix guessit and subliminal. Fixes #1080

libs/rebulk/validators.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+Validator functions to use in patterns.
+
+All those function have last argument as match, so it's possible to use functools.partial to bind previous arguments.
+"""
+
+
+def chars_before(chars, match):
+    """
+    Validate the match if left character is in a given sequence.
+
+    :param chars:
+    :type chars:
+    :param match:
+    :type match:
+    :return:
+    :rtype:
+    """
+    if match.start <= 0:
+        return True
+    return match.input_string[match.start - 1] in chars
+
+
+def chars_after(chars, match):
+    """
+    Validate the match if right character is in a given sequence.
+
+    :param chars:
+    :type chars:
+    :param match:
+    :type match:
+    :return:
+    :rtype:
+    """
+    if match.end >= len(match.input_string):
+        return True
+    return match.input_string[match.end] in chars
+
+
+def chars_surround(chars, match):
+    """
+    Validate the match if surrounding characters are in a given sequence.
+
+    :param chars:
+    :type chars:
+    :param match:
+    :type match:
+    :return:
+    :rtype:
+    """
+    return chars_before(chars, match) and chars_after(chars, match)
+
+
+def validators(*chained_validators):
+    """
+    Creates a validator chain from several validator functions.
+
+    :param chained_validators:
+    :type chained_validators:
+    :return:
+    :rtype:
+    """
+    def validator_chain(match):  # pylint:disable=missing-docstring
+        for chained_validator in chained_validators:
+            if not chained_validator(match):
+                return False
+        return True
+    return validator_chain