MigrationItem: new class representing a single package being migrated.

Signed-off-by: Adam D. Barratt <adam@adam-barratt.org.uk>

migrationitem.py

@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (C) 2011 Adam D. Barratt <adsb@debian.org>
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class MigrationItem:
+    def __init__(self, name = None):
+        self._name = None
+        self._version = None
+        self._architecture = None
+        self._suite = None
+
+        if name:
+            self._set_name(name)
+
+    def _get_name(self):
+        return self._name
+
+    def _set_name(self, value):
+        self._version = None
+        self._name = value
+        if value.startswith('-'):
+            value = value[1:]
+        parts = value.split('/', 3)
+        package = parts[0]
+        if '_' in package:
+            self._package, self._suite = package.split('_', 2)
+        else:
+            self._package, self._suite = (package, 'unstable')
+        if len(parts) == 2:
+            self._architecture = parts[1]
+        else:
+            self._architecture = 'source'
+
+        if '_' in self._architecture:
+            self_architecture, self._suite = \
+               self._architecture.split('_', 2)
+
+        if self.is_removal:
+            self._suite = 'testing'
+	    
+    name = property(_get_name, _set_name)
+
+    @property
+    def is_removal(self):
+        return self._name.startswith('-')
+
+    @property
+    def architecture(self):
+       return self._architecture
+
+    @property
+    def package(self):
+        return self._package
+
+    @property
+    def suite(self):
+        return self._suite
+
+    @property
+    def version(self):
+        return self._version