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  • Committer: Robert Collins
  • Date: 2010-05-05 00:05:29 UTC
  • mto: This revision was merged to the branch mainline in revision 5206.
  • Revision ID: robertc@robertcollins.net-20100505000529-ltmllyms5watqj5u
Make 'pydoc bzrlib.tests.build_tree_shape' useful.

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workingtree.py
1
 
# Copyright (C) 2008 Jelmer Vernooij <jelmer@samba.org>
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#
3
 
# 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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#
8
 
# This program is distributed in the hope that it will be useful,
9
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 
# GNU General Public License for more details.
12
 
#
13
 
# You should have received a copy of the GNU General Public License
14
 
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
 
 
17
 
 
18
 
"""An adapter between a Git index and a Bazaar Working Tree"""
19
 
 
20
 
 
21
 
from cStringIO import (
22
 
    StringIO,
23
 
    )
24
 
from dulwich.index import (
25
 
    Index,
26
 
    )
27
 
from dulwich.objects import (
28
 
    Blob,
29
 
    )
30
 
import os
31
 
import stat
32
 
 
33
 
from bzrlib import (
34
 
    errors,
35
 
    ignores,
36
 
    inventory,
37
 
    lockable_files,
38
 
    lockdir,
39
 
    osutils,
40
 
    transport,
41
 
    urlutils,
42
 
    workingtree,
43
 
    )
44
 
from bzrlib.decorators import (
45
 
    needs_read_lock,
46
 
    needs_write_lock,
47
 
    )
48
 
 
49
 
 
50
 
from bzrlib.plugins.git.inventory import (
51
 
    GitIndexInventory,
52
 
    )
53
 
 
54
 
 
55
 
IGNORE_FILENAME = ".gitignore"
56
 
 
57
 
 
58
 
class GitWorkingTree(workingtree.WorkingTree):
59
 
    """A Git working tree."""
60
 
 
61
 
    def __init__(self, bzrdir, repo, branch):
62
 
        self.basedir = bzrdir.root_transport.local_abspath('.')
63
 
        self.bzrdir = bzrdir
64
 
        self.repository = repo
65
 
        self.mapping = self.repository.get_mapping()
66
 
        self._branch = branch
67
 
        self._transport = bzrdir.transport
68
 
 
69
 
        self.controldir = urlutils.join(self.repository._git._controldir, 'bzr')
70
 
 
71
 
        try:
72
 
            os.makedirs(self.controldir)
73
 
            os.makedirs(os.path.join(self.controldir, 'lock'))
74
 
        except OSError:
75
 
            pass
76
 
 
77
 
        self._control_files = lockable_files.LockableFiles(
78
 
            transport.get_transport(self.controldir), 'lock', lockdir.LockDir)
79
 
 
80
 
        self._format = GitWorkingTreeFormat()
81
 
 
82
 
        self.index_path = os.path.join(self.repository._git.controldir(), 
83
 
                                       "index")
84
 
        self.index = Index(self.index_path)
85
 
        self.views = self._make_views()
86
 
        self._detect_case_handling()
87
 
 
88
 
    def unlock(self):
89
 
        # non-implementation specific cleanup
90
 
        self._cleanup()
91
 
 
92
 
        # reverse order of locking.
93
 
        try:
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            return self._control_files.unlock()
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        finally:
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            self.branch.unlock()
97
 
 
98
 
    def is_control_filename(self, path):
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        return os.path.basename(path) == ".git"
100
 
 
101
 
    def _rewrite_index(self):
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        self.index.clear()
103
 
        for path, entry in self._inventory.iter_entries():
104
 
            if entry.kind == "directory":
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                # Git indexes don't contain directories
106
 
                continue
107
 
            if entry.kind == "file":
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                blob = Blob()
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                try:
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                    file, stat_val = self.get_file_with_stat(entry.file_id, path)
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                except (errors.NoSuchFile, IOError):
112
 
                    # TODO: Rather than come up with something here, use the old index
113
 
                    file = StringIO()
114
 
                    stat_val = (0, 0, 0, 0, stat.S_IFREG | 0644, 0, 0, 0, 0, 0)
115
 
                blob._text = file.read()
116
 
            elif entry.kind == "symlink":
117
 
                blob = Blob()
118
 
                stat_val = os.stat(self.abspath(path))
119
 
                blob._text = entry.symlink_target
120
 
            # Add object to the repository if it didn't exist yet
121
 
            if not blob.id in self.repository._git.object_store:
122
 
                self.repository._git.object_store.add_object(blob)
123
 
            # Add an entry to the index or update the existing entry
124
 
            (mode, ino, dev, links, uid, gid, size, atime, mtime, ctime) = stat_val
125
 
            flags = 0
126
 
            self.index[path.encode("utf-8")] = (ctime, mtime, ino, dev, mode, uid, gid, size, blob.id, flags)
127
 
 
128
 
    def flush(self):
129
 
        # TODO: Maybe this should only write on dirty ?
130
 
        if self._control_files._lock_mode != 'w':
131
 
            raise errors.NotWriteLocked(self)
132
 
        self._rewrite_index()           
133
 
        self.index.write()
134
 
        self._inventory_is_modified = False
135
 
 
136
 
    def get_ignore_list(self):
137
 
        ignoreset = getattr(self, '_ignoreset', None)
138
 
        if ignoreset is not None:
139
 
            return ignoreset
140
 
 
141
 
        ignore_globs = set()
142
 
        ignore_globs.update(ignores.get_runtime_ignores())
143
 
        ignore_globs.update(ignores.get_user_ignores())
144
 
        if self.has_filename(IGNORE_FILENAME):
145
 
            f = self.get_file_byname(IGNORE_FILENAME)
146
 
            try:
147
 
                ignore_globs.update(ignores.parse_ignore_file(f))
148
 
            finally:
149
 
                f.close()
150
 
        self._ignoreset = ignore_globs
151
 
        return ignore_globs
152
 
 
153
 
    def _reset_data(self):
154
 
        self._inventory_is_modified = False
155
 
        basis_inv = self.repository.get_inventory(self.mapping.revision_id_foreign_to_bzr(self.repository._git.head()))
156
 
        result = GitIndexInventory(basis_inv, self.mapping, self.index)
157
 
        self._set_inventory(result, dirty=False)
158
 
 
159
 
    @needs_read_lock
160
 
    def get_file_sha1(self, file_id, path=None, stat_value=None):
161
 
        if not path:
162
 
            path = self._inventory.id2path(file_id)
163
 
        return osutils.sha_file_by_name(self.abspath(path).encode(osutils._fs_enc))
164
 
 
165
 
 
166
 
class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):
167
 
 
168
 
    def get_format_description(self):
169
 
        return "Git Working Tree"