lacre.config: Make both enums case-insensitive

Also: use PGPStyle in lacre.core.

lacre/config.py

@@ -152,9 +152,10 @@ class FromStrMixin:
 
     @classmethod
     def from_str(cls, name, *, required=False):
-        # If name conversion is available, use it.
-        if hasattr(cls, 'conv'):
-            name = cls.conv(name)
+        if name is None:
+            return None
+
+        name = name.upper()
 
         if name in cls.__members__:
             return cls.__members__[name]
@@ -167,7 +168,6 @@ class FromStrMixin:
     @classmethod
     def from_config(cls, section, key, *, required=False):
         param = get_item(section, key)
-        # print(f'from config {param}, {section}:{key}*{required}')
         return cls.from_str(param, required=required)
 
 
@@ -185,7 +185,3 @@ class PoolingMode(FromStrMixin, Enum):
     """
     OPTIMISTIC = auto()
     PESSIMISTIC = auto()
-
-    @classmethod
-    def conv(cls, name):
-        return name.upper()

lacre/core.py

@@ -88,17 +88,18 @@ def _sort_gpg_recipients(gpg_to) -> Tuple[recpt.RecipientList, recpt.RecipientLi
 
     for rcpt in gpg_to:
         # Checking pre defined styles in settings first
-        if conf.config_item_equals('pgp_style', rcpt.email(), 'mime'):
+        style = conf.PGPStyle.from_config('pgp_style', rcpt.email())
+        if style is conf.PGPStyle.MIME:
             recipients_mime.append(rcpt.email())
             keys_mime.extend(rcpt.key().split(','))
-        elif conf.config_item_equals('pgp_style', rcpt.email(), 'inline'):
+        elif style is conf.PGPStyle.INLINE:
             recipients_inline.append(rcpt.email())
             keys_inline.extend(rcpt.key().split(','))
         else:
             # Log message only if an unknown style is defined
             if conf.config_item_set('pgp_style', rcpt.email()):
-                LOG.debug("Style %s for recipient %s is not known. Use default as fallback."
-                          % (conf.get_item("pgp_style", rcpt.email()), rcpt.email()))
+                LOG.debug("Style %s for recipient %s is not known. Use default as fallback.",
+                          conf.get_item("pgp_style", rcpt.email()), rcpt.email())
 
             # If no style is in settings defined for recipient, use default from settings
             if default_to_pgp_mime: