new method 'delete' in storage and config

weboob/tools/application/base.py

@@ -44,6 +44,10 @@ class ApplicationStorage(object):
         if self.storage:
             return self.storage.set('applications', self.name, *args)
 
+    def delete(self, *args):
+        if self.storage:
+            return self.storage.delete('applications', self.name, *args)
+
     def get(self, *args, **kwargs):
         if self.storage:
             return self.storage.get('applications', self.name, *args, **kwargs)

weboob/tools/backend.py

@@ -40,6 +40,10 @@ class BackendStorage(object):
         if self.storage:
             return self.storage.set('backends', self.name, *args)
 
+    def delete(self, *args):
+        if self.storage:
+            return self.storage.delete('backends', self.name, *args)
+
     def get(self, *args, **kwargs):
         if self.storage:
             return self.storage.get('backends', self.name, *args, **kwargs)

weboob/tools/config/iconfig.py

@@ -30,5 +30,8 @@ class IConfig:
     def set(self, *args):
         raise NotImplementedError()
 
+    def delete(self, *args):
+        raise NotImplementedError()
+
     def get(self, *args, **kwargs):
         raise NotImplementedError()

weboob/tools/config/iniconfig.py

@@ -98,3 +98,11 @@ class INIConfig(IConfig):
                 v[k] = {}
             v = v[k]
         v[args[-2]] = args[-1]
+
+    def delete(self, *args):
+        v = self.values
+        for k in args[:-1]:
+            if k not in v:
+                return
+            v = v[k]
+        v.pop(args[-1], None)

weboob/tools/config/yamlconfig.py

@@ -93,3 +93,15 @@ class YamlConfig(IConfig):
                 raise ConfigError()
 
         v[args[-2]] = args[-1]
+
+    def delete(self, *args):
+        v = self.values
+        for a in args[:-1]:
+            try:
+                v = v[a]
+            except KeyError:
+                return
+            except TypeError:
+                raise ConfigError()
+
+        v.pop(args[-1], None)

weboob/tools/storage.py

@@ -31,6 +31,9 @@ class IStorage:
     def set(self, what, name, *args):
         raise NotImplementedError()
 
+    def delete(self, what, name, *args):
+        raise NotImplementedError()
+
     def get(self, what, name, *args, **kwargs):
         raise NotImplementedError()
 
@@ -56,5 +59,8 @@ class StandardStorage(IStorage):
     def set(self, what, name, *args):
         self.config.set(what, name, *args)
 
+    def delete(self, what, name, *args):
+        self.config.delete(what, name, *args)
+
     def get(self, what, name, *args, **kwargs):
         return self.config.get(what, name, *args, **kwargs)