[StGit PATCH 4/6] Refactor crt_series creation

["Karl Hasselström" <kha@treskal.com>]

Instead of hard-coding in main.py which commands do and don't need a
current series, let them speak for themselves.

Signed-off-by: Karl Hasselström <kha@treskal.com>

---

 stgit/commands/clone.py  |    2 +-
 stgit/commands/common.py |    2 ++
 stgit/main.py            |    5 ++---
 3 files changed, 5 insertions(+), 4 deletions(-)


diff --git a/stgit/commands/clone.py b/stgit/commands/clone.py
index a150010..c3b0bbe 100644
--- a/stgit/commands/clone.py
+++ b/stgit/commands/clone.py
@@ -29,7 +29,7 @@ usage = """%prog [options] <repository> <dir>
 Clone a GIT <repository> into the local <dir> and initialise the
 patch stack."""
 
-directory = DirectoryAnywhere()
+directory = DirectoryAnywhere(needs_current_series = False)
 options = []
 
 
diff --git a/stgit/commands/common.py b/stgit/commands/common.py
index 27ef465..652039f 100644
--- a/stgit/commands/common.py
+++ b/stgit/commands/common.py
@@ -497,6 +497,8 @@ class DirectoryException(StgException):
     pass
 
 class _Directory(object):
+    def __init__(self, needs_current_series = True):
+        self.needs_current_series =  needs_current_series
     @readonly_constant_property
     def git_dir(self):
         try:
diff --git a/stgit/main.py b/stgit/main.py
index 8e00217..db327f1 100644
--- a/stgit/main.py
+++ b/stgit/main.py
@@ -271,9 +271,8 @@ def main():
         directory.setup()
         config_setup()
 
-        # 'clone' doesn't expect an already initialised GIT tree. A Series
-        # object will be created after the GIT tree is cloned
-        if cmd != 'clone':
+        # Some commands don't (always) need an initialized series.
+        if directory.needs_current_series:
             if hasattr(options, 'branch') and options.branch:
                 command.crt_series = Series(options.branch)
             else: