Added HostGroup class

ssh_config_utils/config_file.py

@@ -4,6 +4,25 @@ from ssh_config_utils.host import GlobalHost, Host
 from ssh_config_utils.parser import parse_config_text
 
 
+class HostGroup:
+    def __init__(self, name):
+        self.parent = None
+        self.name = name
+        self.children = []
+
+    def add_child_group(self, name):
+        child = HostGroup(name)
+        child.parent = self
+        self.children.append(self)
+        return child
+
+    @property
+    def fullpath(self):
+        if self.parent is None:
+            return ""
+        return ".".join(self.parent.fullpath(), self.name)
+
+
 class ConfigFile:
     def __init__(self, global_host, hosts):
         self.hosts = {}