start RuleSet class

Signed-off-by: Doug Hellmann <doug@doughellmann.com>

whereto/rules.py

@@ -70,3 +70,20 @@ class RedirectMatch(Rule):
         if m:
             return (self.code, self.regex.sub(self.target_repl, path))
         return None
+
+
+class RuleSet(object):
+    "An ordered collection of rules."
+
+    _factories = {
+        'redirect': Redirect,
+        'redirectmatch': RedirectMatch,
+    }
+
+    def __init__(self):
+        self._rules = []
+
+    def add(self, linenum, *params):
+        rule_type = params[0].lower()
+        rule = self._factories[rule_type](linenum, *params)
+        self._rules.append(rule)

whereto/tests/test_rules.py

@@ -132,3 +132,26 @@ class TestRedirectMatch(base.TestCase):
             (1, 'redirectmatch', '301', '/the/path', '/new/path',
              'extra-value'),
         )
+
+
+class TestRuleSet(base.TestCase):
+
+    def setUp(self):
+        super(TestRuleSet, self).setUp()
+        self.ruleset = rules.RuleSet()
+
+    def test_add_redirect(self):
+        self.ruleset.add(
+            1,
+            'redirect', '301', '/path', '/new/path',
+        )
+        self.assertEqual(1, len(self.ruleset._rules))
+        self.assertIsInstance(self.ruleset._rules[0], rules.Redirect)
+
+    def test_add_redirectmatch(self):
+        self.ruleset.add(
+            1,
+            'redirectmatch', '301', '/path', '/new/path',
+        )
+        self.assertEqual(1, len(self.ruleset._rules))
+        self.assertIsInstance(self.ruleset._rules[0], rules.RedirectMatch)