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  • Committer: Martin
  • Date: 2010-05-03 20:57:39 UTC
  • mto: This revision was merged to the branch mainline in revision 5204.
  • Revision ID: gzlist@googlemail.com-20100503205739-n326zdvevv0rmruh
Retain original stack and error message when translating to ValueError in bencode

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bzrlib/treebuilder.py
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""TreeBuilder helper class.
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TreeBuilders are used to build trees of various shapres or properties. This 
 
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TreeBuilders are used to build trees of various shapres or properties. This
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can be extremely useful in testing for instance.
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"""
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    def __init__(self):
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        """Construct a TreeBuilder."""
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        self._tree = None
 
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        self._root_done = False
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    def build(self, recipe):
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        """Build recipe into the current tree.
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            '/' then a directory is added, otherwise a regular file is added.
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        """
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        self._ensure_building()
 
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        if not self._root_done:
 
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            self._tree.add('', 'root-id', 'directory')
 
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            self._root_done = True
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        for name in recipe:
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            assert isinstance(name, basestring)
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            if name[-1] == '/':
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                self._tree.mkdir(name[:-1])
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            else:
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        """Raise NotBuilding if there is no current tree being built."""
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        if self._tree is None:
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            raise errors.NotBuilding
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    def finish_tree(self):
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        """Finish building the current tree."""
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        self._ensure_building()
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    def start_tree(self, tree):
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        """Start building on tree.
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        :param tree: A tree to start building on. It must provide the 
 
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        :param tree: A tree to start building on. It must provide the
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            MutableTree interface.
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        """
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        if self._tree is not None:
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            raise errors.AlreadyBuilding
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        self._tree = tree
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        self._tree.lock_tree_write()
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