/brz/remove-bazaar

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  • Committer: Martin Pool
  • Date: 2005-08-04 22:04:40 UTC
  • Revision ID: mbp@sourcefrog.net-20050804220440-99562df8151d1ac5
- add pending merge from aaron

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# Copyright (C) 2007 Canonical Ltd
2
 
#
3
 
# This program is free software; you can redistribute it and/or modify
4
 
# it under the terms of the GNU General Public License as published by
5
 
# the Free Software Foundation; either version 2 of the License, or
6
 
# (at your option) any later version.
7
 
#
8
 
# This program is distributed in the hope that it will be useful,
9
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 
# 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
 
"""An adapter between a Git control dir and a Bazaar BzrDir."""
18
 
 
19
 
from bzrlib import (
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    bzrdir,
21
 
    errors as bzr_errors,
22
 
    lockable_files,
23
 
    urlutils,
24
 
    version_info as bzrlib_version,
25
 
    )
26
 
 
27
 
LockWarner = getattr(lockable_files, "_LockWarner", None)
28
 
 
29
 
from bzrlib.plugins.git import (
30
 
    LocalGitBzrDirFormat,
31
 
    get_rich_root_format,
32
 
    )
33
 
 
34
 
 
35
 
class GitLock(object):
36
 
    """A lock that thunks through to Git."""
37
 
 
38
 
    def lock_write(self, token=None):
39
 
        pass
40
 
 
41
 
    def lock_read(self):
42
 
        pass
43
 
 
44
 
    def unlock(self):
45
 
        pass
46
 
 
47
 
    def peek(self):
48
 
        pass
49
 
 
50
 
    def validate_token(self, token):
51
 
        pass
52
 
 
53
 
    def break_lock(self):
54
 
        pass
55
 
 
56
 
 
57
 
class GitLockableFiles(lockable_files.LockableFiles):
58
 
    """Git specific lockable files abstraction."""
59
 
 
60
 
    def __init__(self, transport, lock):
61
 
        self._lock = lock
62
 
        self._transaction = None
63
 
        self._lock_mode = None
64
 
        self._transport = transport
65
 
        if LockWarner is None:
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            # Bzr 1.13
67
 
            self._lock_count = 0
68
 
        else:
69
 
            self._lock_warner = LockWarner(repr(self))
70
 
 
71
 
 
72
 
class GitDir(bzrdir.BzrDir):
73
 
    """An adapter to the '.git' dir used by git."""
74
 
 
75
 
    def is_supported(self):
76
 
        return True
77
 
 
78
 
    def cloning_metadir(self, stacked=False):
79
 
        return get_rich_root_format(stacked)
80
 
 
81
 
    def _branch_name_to_ref(self, name):
82
 
        from bzrlib.plugins.git.branch import branch_name_to_ref
83
 
        return branch_name_to_ref(name)
84
 
 
85
 
    if bzrlib_version >= (2, 2):
86
 
        def open_branch(self, name=None, ignore_fallbacks=None,
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            unsupported=False):
88
 
            return self._open_branch(name=name,
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                ignore_fallbacks=ignore_fallbacks, unsupported=unsupported)
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    else:
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        def open_branch(self, ignore_fallbacks=None, unsupported=False):
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            return self._open_branch(name=None,
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                ignore_fallbacks=ignore_fallbacks, unsupported=unsupported)
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95
 
 
96
 
class LocalGitDir(GitDir):
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    """An adapter to the '.git' dir used by git."""
98
 
 
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    def _get_gitrepository_class(self):
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        from bzrlib.plugins.git.repository import LocalGitRepository
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        return LocalGitRepository
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    _gitrepository_class = property(_get_gitrepository_class)
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    def __init__(self, transport, lockfiles, gitrepo, format):
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        self._format = format
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        self.root_transport = transport
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        self._git = gitrepo
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        if gitrepo.bare:
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            self.transport = transport
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        else:
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            self.transport = transport.clone('.git')
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        self._lockfiles = lockfiles
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        self._mode_check_done = None
115
 
 
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    def is_control_filename(self, filename):
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        return filename == '.git' or filename.startswith('.git/')
118
 
 
119
 
    def get_branch_transport(self, branch_format):
120
 
        if branch_format is None:
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            return self.transport
122
 
        if isinstance(branch_format, LocalGitBzrDirFormat):
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            return self.transport
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        raise bzr_errors.IncompatibleFormat(branch_format, self._format)
125
 
 
126
 
    get_repository_transport = get_branch_transport
127
 
    get_workingtree_transport = get_branch_transport
128
 
 
129
 
    def _open_branch(self, name=None, ignore_fallbacks=None, unsupported=False):
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        """'create' a branch for this dir."""
131
 
        repo = self.open_repository()
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        from bzrlib.plugins.git.branch import LocalGitBranch
133
 
        return LocalGitBranch(self, repo, self._branch_name_to_ref(name),
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            self._lockfiles)
135
 
 
136
 
    def destroy_branch(self, name=None):
137
 
        del self._git.refs[self._branch_name_to_ref(name)]
138
 
 
139
 
    def list_branches(self):
140
 
        ret = []
141
 
        for name in self._git.get_refs():
142
 
            if name.startswith("refs/heads/") or name == "HEAD":
143
 
                ret.append(self.open_branch(name=name))
144
 
        return ret
145
 
 
146
 
    def open_repository(self, shared=False):
147
 
        """'open' a repository for this dir."""
148
 
        return self._gitrepository_class(self, self._lockfiles)
149
 
 
150
 
    def open_workingtree(self, recommend_upgrade=True):
151
 
        if not self._git.bare:
152
 
            from dulwich.errors import NoIndexPresent
153
 
            repo = self.open_repository()
154
 
            try:
155
 
                index = repo._git.open_index()
156
 
            except NoIndexPresent:
157
 
                pass
158
 
            else:
159
 
                from bzrlib.plugins.git.workingtree import GitWorkingTree
160
 
                return GitWorkingTree(self, repo, self.open_branch(), index)
161
 
        loc = urlutils.unescape_for_display(self.root_transport.base, 'ascii')
162
 
        raise bzr_errors.NoWorkingTree(loc)
163
 
 
164
 
    def create_repository(self, shared=False):
165
 
        return self.open_repository()
166
 
 
167
 
    def create_branch(self, name=None):
168
 
        refname = self._branch_name_to_ref(name)
169
 
        self._git.refs[refname] = "0" * 40
170
 
        return self.open_branch(name)
171
 
 
172
 
    def backup_bzrdir(self):
173
 
        if self._git.bare:
174
 
            self.root_transport.copy_tree(".git", ".git.backup")
175
 
            return (self.root_transport.abspath(".git"),
176
 
                    self.root_transport.abspath(".git.backup"))
177
 
        else:
178
 
            raise bzr_errors.BzrError("Unable to backup bare repositories")
179
 
 
180
 
    def create_workingtree(self, revision_id=None, from_branch=None,
181
 
        accelerator_tree=None, hardlink=False):
182
 
        if self._git.bare:
183
 
            raise bzr_errors.BzrError("Can't create working tree in a bare repo")
184
 
        from dulwich.index import write_index
185
 
        from dulwich.pack import SHA1Writer
186
 
        f = open(self.transport.local_abspath("index"), 'w+')
187
 
        try:
188
 
            f = SHA1Writer(f)
189
 
            write_index(f, [])
190
 
        finally:
191
 
            f.close()
192
 
        return self.open_workingtree()