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# Copyright (C) 2005-2010 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Helper functions for adding files to working trees."""
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class AddAction(object):
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"""A class which defines what action to take when adding a file."""
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def __init__(self, to_file=None, should_print=None):
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"""Initialize an action which prints added files to an output stream.
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:param to_file: The stream to write into. This is expected to take
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Unicode paths. If not supplied, it will default to ``sys.stdout``.
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:param should_print: If False, printing will be suppressed.
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self._to_file = to_file
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self._to_file = sys.stdout
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self.should_print = False
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if should_print is not None:
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self.should_print = should_print
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def __call__(self, inv, parent_ie, path, kind, _quote=osutils.quotefn):
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"""Add path to inventory.
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The default action does nothing.
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:param inv: The inventory we are working with.
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:param path: The FastPath being added
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:param kind: The kind of the object being added.
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self._to_file.write('adding %s\n' % _quote(path))
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def skip_file(self, tree, path, kind, stat_value = None):
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"""Test whether the given file should be skipped or not.
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The default action never skips. Note this is only called during
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:param tree: The tree we are working in
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:param path: The path being added
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:param kind: The kind of object being added.
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:param stat: Stat result for this file, if available already
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:return bool. True if the file should be skipped (not added)
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class AddWithSkipLargeAction(AddAction):
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"""A class that can decide to skip a file if it's considered too large"""
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_DEFAULT_MAX_FILE_SIZE = 20000000
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_optionName = 'add.maximum_file_size'
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def skip_file(self, tree, path, kind, stat_value = None):
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if self._maxSize is None:
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config = tree.branch.get_config()
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self._maxSize = config.get_user_option_as_int_from_SI(
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self._DEFAULT_MAX_FILE_SIZE)
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if stat_value is None:
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file_size = os.path.getsize(path);
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file_size = stat_value.st_size;
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if self._maxSize > 0 and file_size > self._maxSize:
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ui.ui_factory.show_warning(
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"skipping %s (larger than %s of %d bytes)" %
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(path, self._optionName, self._maxSize))
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class AddFromBaseAction(AddAction):
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"""This class will try to extract file ids from another tree."""
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def __init__(self, base_tree, base_path, to_file=None, should_print=None):
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super(AddFromBaseAction, self).__init__(to_file=to_file,
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should_print=should_print)
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self.base_tree = base_tree
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self.base_path = base_path
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def __call__(self, inv, parent_ie, path, kind):
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# Place the parent call
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# Now check to see if we can extract an id for this file
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file_id, base_path = self._get_base_file_id(path, parent_ie)
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if file_id is not None:
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if self.should_print:
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self._to_file.write('adding %s w/ file id from %s\n'
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# we aren't doing anything special, so let the default
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file_id = super(AddFromBaseAction, self).__call__(
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inv, parent_ie, path, kind)
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def _get_base_file_id(self, path, parent_ie):
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"""Look for a file id in the base branch.
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First, if the base tree has the parent directory,
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we look for a file with the same name in that directory.
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Else, we look for an entry in the base tree with the same path.
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if self.base_tree.has_id(parent_ie.file_id):
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base_parent_ie = self.base_tree.inventory[parent_ie.file_id]
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base_child_ie = base_parent_ie.children.get(
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osutils.basename(path))
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if base_child_ie is not None:
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return (base_child_ie.file_id,
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self.base_tree.id2path(base_child_ie.file_id))
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full_base_path = osutils.pathjoin(self.base_path, path)
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# This may return None, but it is our last attempt
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return self.base_tree.path2id(full_base_path), full_base_path