add FileOption

tiramisu/option.py

@@ -1031,6 +1031,7 @@ class DomainnameOption(Option):
 
 class EmailOption(DomainnameOption):
     __slots__ = tuple()
+    _opt_type = 'email'
     username_re = re.compile(r"^[\w!#$%&'*+\-/=?^`{|}~.]+$")
 
     def __init__(self, *args, **kwargs):
@@ -1053,6 +1054,7 @@ class EmailOption(DomainnameOption):
 
 class URLOption(DomainnameOption):
     __slots__ = tuple()
+    _opt_type = 'url'
     proto_re = re.compile(r'(http|https)://')
     path_re = re.compile(r"^[a-z0-9\-\._~:/\?#\[\]@!%\$&\'\(\)\*\+,;=]+$")
 
@@ -1093,6 +1095,17 @@ class URLOption(DomainnameOption):
                                ' {0}').format(self._name))
 
 
+class FileOption(Option):
+    __slots__ = tuple()
+    _opt_type = 'file'
+    path_re = re.compile(r"^[a-zA-Z0-9\-\._~/+]+$")
+
+    def _validate(self, value):
+        match = self.path_re.search(value)
+        if not match:
+            raise ValueError(_('invalid filename for {0}').format(self._name))
+
+
 class OptionDescription(BaseOption):
     """Config's schema (organisation, group) and container of Options
     The `OptionsDescription` objects lives in the `tiramisu.config.Config`.