1 files changed, 58 insertions, 0 deletions
diff --git a/lib/thandy/packagesys/PackageSystem.py b/lib/thandy/packagesys/PackageSystem.py
new file mode 100644
index 0000000..ad1e221
--- /dev/null
+++ b/lib/thandy/packagesys/PackageSystem.py
@@ -0,0 +1,58 @@
+# Copyright 2008 The Tor Project, Inc.  See LICENSE for licensing information.
+
+class PackageSystem:
+    def getName(self):
+        raise NotImplemented()
+
+    def packageHandleFromJSON(self, json):
+        raise NotImplemented()
+
+    def canBeAutomatic(self):
+        return True
+
+    def canHaveUI(self):
+        return False
+
+    def getTransaction(self):
+        return PackageTransaction()
+
+class PackageTransaction:
+    def __init__(self):
+        self._transactions = []
+
+    def _start(self):
+        pass
+
+    def _commit(self):
+        pass
+
+    def run(self):
+        self._start()
+        for cb in self._transactions:
+            cb(self)
+        self._commit()
+
+    def addInstall(self, packageHandle):
+        self._transactions.append(packageHandle.install)
+
+    def addRemove(self, packageHandle):
+        self._transactions.append(packageHandle.remove)
+
+class PackageHandle:
+    def isInstalled(self, transaction=None):
+        raise NotImplemented()
+
+    def anyVersionInstalled(self, transaction=None):
+        raise NotImplemented()
+
+    def getInstalledVersion(self, transaction=None):
+        raise NotImplemented()
+
+    def install(self, transaction):
+        raise NotImplemented()
+
+    def remove(self, transaction):
+        raise NotImplemented()
+
+    def checkInstall(self, transaction=None):
+        raise NotImplemented()