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# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
#
# This module is part of GitDB and is released under
# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
from git.objects.submodule.base import Submodule
from git.objects.submodule.root import RootModule
from git.db.interface import SubmoduleDB

__all__ = ["PureSubmoduleDB"]

class PureSubmoduleDB(SubmoduleDB):
    """Pure python implementation of submodule functionality"""
    
    @property
    def submodules(self):
        return Submodule.list_items(self)
        
    def submodule(self, name):
        try:
            return self.submodules[name]
        except IndexError:
            raise ValueError("Didn't find submodule named %r" % name)
        # END exception handling
        
    def create_submodule(self, *args, **kwargs):
        return Submodule.add(self, *args, **kwargs)
        
    def iter_submodules(self, *args, **kwargs):
        return RootModule(self).traverse(*args, **kwargs)
        
    def submodule_update(self, *args, **kwargs):
        return RootModule(self).update(*args, **kwargs)