~bzr-pqm/bzr/bzr.dev

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
# Copyright (C) 2005-2010 Canonical Ltd
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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

"""Helper functions for adding files to working trees."""

from __future__ import absolute_import

import sys
import os

from bzrlib import (
    osutils,
    ui, 
    )
from bzrlib.i18n import gettext

class AddAction(object):
    """A class which defines what action to take when adding a file."""

    def __init__(self, to_file=None, should_print=None):
        """Initialize an action which prints added files to an output stream.

        :param to_file: The stream to write into. This is expected to take
            Unicode paths. If not supplied, it will default to ``sys.stdout``.
        :param should_print: If False, printing will be suppressed.
        """
        self._to_file = to_file
        if to_file is None:
            self._to_file = sys.stdout
        self.should_print = False
        if should_print is not None:
            self.should_print = should_print

    def __call__(self, inv, parent_ie, path, kind, _quote=osutils.quotefn):
        """Add path to inventory.

        The default action does nothing.

        :param inv: The inventory we are working with.
        :param path: The FastPath being added
        :param kind: The kind of the object being added.
        """
        if self.should_print:
            self._to_file.write('adding %s\n' % _quote(path))
        return None

    def skip_file(self, tree, path, kind, stat_value = None):
        """Test whether the given file should be skipped or not.
        
        The default action never skips. Note this is only called during
        recursive adds
        
        :param tree: The tree we are working in
        :param path: The path being added
        :param kind: The kind of object being added.
        :param stat: Stat result for this file, if available already
        :return bool. True if the file should be skipped (not added)
        """
        return False


class AddWithSkipLargeAction(AddAction):
    """A class that can decide to skip a file if it's considered too large"""

    _maxSize = None

    def skip_file(self, tree, path, kind, stat_value = None):
        if kind != 'file':
            return False
        opt_name = 'add.maximum_file_size'
        if self._maxSize is None:
            config = tree.get_config_stack()
            self._maxSize = config.get(opt_name)
        if stat_value is None:
            file_size = os.path.getsize(path);
        else:
            file_size = stat_value.st_size;
        if self._maxSize > 0 and file_size > self._maxSize:
            ui.ui_factory.show_warning(gettext(
                "skipping {0} (larger than {1} of {2} bytes)").format(
                path, opt_name,  self._maxSize))
            return True
        return False


class AddFromBaseAction(AddAction):
    """This class will try to extract file ids from another tree."""

    def __init__(self, base_tree, base_path, to_file=None, should_print=None):
        super(AddFromBaseAction, self).__init__(to_file=to_file,
                                                should_print=should_print)
        self.base_tree = base_tree
        self.base_path = base_path

    def __call__(self, inv, parent_ie, path, kind):
        # Place the parent call
        # Now check to see if we can extract an id for this file
        file_id, base_path = self._get_base_file_id(path, parent_ie)
        if file_id is not None:
            if self.should_print:
                self._to_file.write('adding %s w/ file id from %s\n'
                                    % (path, base_path))
        else:
            # we aren't doing anything special, so let the default
            # reporter happen
            file_id = super(AddFromBaseAction, self).__call__(
                        inv, parent_ie, path, kind)
        return file_id

    def _get_base_file_id(self, path, parent_ie):
        """Look for a file id in the base branch.

        First, if the base tree has the parent directory,
        we look for a file with the same name in that directory.
        Else, we look for an entry in the base tree with the same path.
        """

        if self.base_tree.has_id(parent_ie.file_id):
            # FIXME: Handle nested trees
            base_parent_ie = self.base_tree.root_inventory[parent_ie.file_id]
            base_child_ie = base_parent_ie.children.get(
                osutils.basename(path))
            if base_child_ie is not None:
                return (base_child_ie.file_id,
                        self.base_tree.id2path(base_child_ie.file_id))
        full_base_path = osutils.pathjoin(self.base_path, path)
        # This may return None, but it is our last attempt
        return self.base_tree.path2id(full_base_path), full_base_path