Re-implement "morph init" using the new Workspace class

Move "morph init" into a plugin, and remove it from the previously
existing plugin. This keeps all the old, tricky code in the old
plugin, and moves new, clean code into a new plugin. Eventually the
old plugin can be removed, since it'll be empty.

1 files changed, 63 insertions, 0 deletions

diff --git a/morphlib/plugins/branch_and_merge_new_plugin.py b/morphlib/plugins/branch_and_merge_new_plugin.py
new file mode 100644
index 00000000..2c92156f
--- /dev/null
+++ b/morphlib/plugins/branch_and_merge_new_plugin.py
@@ -0,0 +1,63 @@
+# Copyright (C) 2012,2013  Codethink Limited
+#
+# 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; version 2 of the License.
+#
+# 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.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+import cliapp
+
+import morphlib
+
+
+class SimpleBranchAndMergePlugin(cliapp.Plugin):
+
+    '''Add subcommands for handling workspaces and system branches.'''
+
+    def enable(self):
+        self.app.add_subcommand('init', self.init, arg_synopsis='[DIR]')
+
+    def disable(self):
+        pass
+
+    def init(self, args):
+        '''Initialize a workspace directory.
+
+        Command line argument:
+
+        * `DIR` is the directory to use as a workspace, and defaults to
+          the current directory.
+
+        This creates a workspace, either in the current working directory,
+        or if `DIR` is given, in that directory. If the directory doesn't
+        exist, it is created. If it does exist, it must be empty.
+
+        You need to run `morph init` to initialise a workspace, or none
+        of the other system branching tools will work: they all assume
+        an existing workspace. Note that a workspace only exists on your
+        machine, not on the git server.
+
+        Example:
+
+            morph init /src/workspace
+            cd /src/workspace
+
+        '''
+
+        if not args:
+            args = ['.']
+        elif len(args) > 1:
+            raise morphlib.Error('init must get at most one argument')
+
+        ws = morphlib.workspace.create(args[0])
+        self.app.status(msg='Initialized morph workspace', chatty=True)
+