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  • Committer: Robert Collins
  • Date: 2010-05-06 11:08:10 UTC
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100506110810-h3j07fh5gmw54s25
Cleaner matcher matching revised unlocking protocol.

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1
 
# Copyright (C) 2006-2009 Canonical Ltd
2
 
 
3
 
# Authors: Robert Collins <robert.collins@canonical.com>
4
 
#          Jelmer Vernooij <jelmer@samba.org>
5
 
#          John Carr <john.carr@unrouted.co.uk>
6
 
#
7
 
# This program is free software; you can redistribute it and/or modify
8
 
# it under the terms of the GNU General Public License as published by
9
 
# the Free Software Foundation; either version 2 of the License, or
10
 
# (at your option) any later version.
11
 
#
12
 
# This program is distributed in the hope that it will be useful,
13
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
 
# GNU General Public License for more details.
16
 
#
17
 
# You should have received a copy of the GNU General Public License
18
 
# along with this program; if not, write to the Free Software
19
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20
 
 
21
 
"""Git-specific subcommands for Bazaar."""
22
 
 
23
 
from bzrlib.commands import (
24
 
    Command,
25
 
    display_command,
26
 
    )
27
 
from bzrlib.option import (
28
 
    Option,
29
 
    )
30
 
 
31
 
 
32
 
class cmd_git_import(Command):
33
 
    """Import all branches from a git repository.
34
 
 
35
 
    """
36
 
 
37
 
    takes_args = ["src_location", "dest_location?"]
38
 
 
39
 
    def run(self, src_location, dest_location=None):
40
 
        from collections import defaultdict
41
 
        import os
42
 
        from bzrlib import (
43
 
            controldir,
44
 
            trace,
45
 
            ui,
46
 
            )
47
 
        from bzrlib.bzrdir import (
48
 
            BzrDir,
49
 
            )
50
 
        from bzrlib.errors import (
51
 
            BzrCommandError,
52
 
            NoRepositoryPresent,
53
 
            NotBranchError,
54
 
            )
55
 
        from bzrlib.repository import (
56
 
            InterRepository,
57
 
            Repository,
58
 
            )
59
 
        from bzrlib.transport import get_transport
60
 
        from bzrlib.plugins.git.branch import (
61
 
            GitBranch,
62
 
            extract_tags,
63
 
            )
64
 
        from bzrlib.plugins.git.refs import ref_to_branch_name
65
 
        from bzrlib.plugins.git.repository import GitRepository
66
 
 
67
 
        dest_format = controldir.ControlDirFormat.get_default_format()
68
 
 
69
 
        if dest_location is None:
70
 
            dest_location = os.path.basename(src_location.rstrip("/\\"))
71
 
 
72
 
        dest_transport = get_transport(dest_location)
73
 
 
74
 
        source_repo = Repository.open(src_location)
75
 
        if not isinstance(source_repo, GitRepository):
76
 
            raise BzrCommandError("%r is not a git repository" % src_location)
77
 
        try:
78
 
            target_bzrdir = BzrDir.open_from_transport(dest_transport)
79
 
        except NotBranchError:
80
 
            target_bzrdir = dest_format.initialize_on_transport_ex(
81
 
                dest_transport, shared_repo=True)[1]
82
 
        try:
83
 
            target_repo = target_bzrdir.find_repository()
84
 
        except NoRepositoryPresent:
85
 
            target_repo = target_bzrdir.create_repository(shared=True)
86
 
 
87
 
        if not target_repo.supports_rich_root():
88
 
            raise BzrCommandError("Target repository doesn't support rich roots")
89
 
 
90
 
        interrepo = InterRepository.get(source_repo, target_repo)
91
 
        mapping = source_repo.get_mapping()
92
 
        refs = interrepo.fetch()
93
 
        unpeeled_tags = defaultdict(set)
94
 
        tags = {}
95
 
        for k, (peeled, unpeeled) in extract_tags(refs).iteritems():
96
 
            tags[k] = mapping.revision_id_foreign_to_bzr(peeled)
97
 
            if unpeeled is not None:
98
 
                unpeeled_tags[peeled].add(unpeeled)
99
 
        # FIXME: Store unpeeled tag map
100
 
        pb = ui.ui_factory.nested_progress_bar()
101
 
        try:
102
 
            for i, (name, ref) in enumerate(refs.iteritems()):
103
 
                try:
104
 
                    ref_to_branch_name(name)
105
 
                except ValueError:
106
 
                    # Not a branch, ignore
107
 
                    continue
108
 
                pb.update("creating branches", i, len(refs))
109
 
                head_transport = dest_transport.clone(name)
110
 
                try:
111
 
                    head_bzrdir = BzrDir.open_from_transport(head_transport)
112
 
                except NotBranchError:
113
 
                    head_bzrdir = dest_format.initialize_on_transport_ex(
114
 
                        head_transport, create_prefix=True)[1]
115
 
                try:
116
 
                    head_branch = head_bzrdir.open_branch()
117
 
                except NotBranchError:
118
 
                    head_branch = head_bzrdir.create_branch()
119
 
                revid = mapping.revision_id_foreign_to_bzr(ref)
120
 
                source_branch = GitBranch(source_repo.bzrdir, source_repo,
121
 
                    name, None, tags)
122
 
                source_branch.head = ref
123
 
                if head_branch.last_revision() != revid:
124
 
                    head_branch.generate_revision_history(revid)
125
 
                source_branch.tags.merge_to(head_branch.tags)
126
 
        finally:
127
 
            pb.finished()
128
 
        trace.note("Use 'bzr checkout' to create a working tree in "
129
 
                   "the newly created branches.")
130
 
 
131
 
 
132
 
 
133
 
class cmd_git_object(Command):
134
 
    """List or display Git objects by SHA.
135
 
 
136
 
    Cat a particular object's Git representation if a SHA is specified.
137
 
    List all available SHAs otherwise.
138
 
    """
139
 
 
140
 
    hidden = True
141
 
 
142
 
    aliases = ["git-objects", "git-cat"]
143
 
    takes_args = ["sha1?"]
144
 
    takes_options = [Option('directory',
145
 
        short_name='d',
146
 
        help='Location of repository.', type=unicode),
147
 
        Option('pretty', help='Pretty-print objects.')]
148
 
    encoding_type = 'exact'
149
 
 
150
 
    @display_command
151
 
    def run(self, sha1=None, directory=".", pretty=False):
152
 
        from bzrlib.errors import (
153
 
            BzrCommandError,
154
 
            )
155
 
        from bzrlib.bzrdir import (
156
 
            BzrDir,
157
 
            )
158
 
        bzrdir, _ = BzrDir.open_containing(directory)
159
 
        repo = bzrdir.find_repository()
160
 
        from bzrlib.plugins.git.object_store import (
161
 
            get_object_store,
162
 
            )
163
 
        object_store = get_object_store(repo)
164
 
        object_store.lock_read()
165
 
        try:
166
 
            if sha1 is not None:
167
 
                try:
168
 
                    obj = object_store[str(sha1)]
169
 
                except KeyError:
170
 
                    raise BzrCommandError("Object not found: %s" % sha1)
171
 
                if pretty:
172
 
                    text = obj.as_pretty_string()
173
 
                else:
174
 
                    text = obj.as_raw_string()
175
 
                self.outf.write(text)
176
 
            else:
177
 
                for sha1 in object_store:
178
 
                    self.outf.write("%s\n" % sha1)
179
 
        finally:
180
 
            object_store.unlock()
181
 
 
182
 
 
183
 
class cmd_git_refs(Command):
184
 
    """Output all of the virtual refs for a repository.
185
 
 
186
 
    """
187
 
 
188
 
    hidden = True
189
 
 
190
 
    takes_options = [Option('directory',
191
 
        short_name='d',
192
 
        help='Location of repository.', type=unicode)]
193
 
 
194
 
    @display_command
195
 
    def run(self, directory="."):
196
 
        from bzrlib.bzrdir import (
197
 
            BzrDir,
198
 
            )
199
 
        from bzrlib.plugins.git.refs import (
200
 
            BazaarRefsContainer,
201
 
            )
202
 
        from bzrlib.plugins.git.object_store import (
203
 
            get_object_store,
204
 
            )
205
 
        bzrdir, _ = BzrDir.open_containing(directory)
206
 
        repo = bzrdir.find_repository()
207
 
        object_store = get_object_store(repo)
208
 
        object_store.lock_read()
209
 
        try:
210
 
            refs = BazaarRefsContainer(bzrdir, object_store)
211
 
            for k, v in refs.as_dict().iteritems():
212
 
                self.outf.write("%s -> %s\n" % (k, v))
213
 
        finally:
214
 
            object_store.unlock()
215
 
 
216
 
 
217
 
class cmd_git_apply(Command):
218
 
    """Apply a series of git-am style patches.
219
 
 
220
 
    This command will in the future probably be integrated into 
221
 
    "bzr pull".
222
 
    """
223
 
 
224
 
    takes_options = [
225
 
        Option('signoff', short_name='s', help='Add a Signed-off-by line.'),
226
 
        'force']
227
 
    takes_args = ["patches*"]
228
 
 
229
 
    def _apply_patch(self, wt, f, signoff):
230
 
        """Apply a patch.
231
 
 
232
 
        :param wt: A Bazaar working tree object.
233
 
        :param f: Patch file to read.
234
 
        :param signoff: Add Signed-Off-By flag.
235
 
        """
236
 
        from bzrlib.errors import BzrCommandError
237
 
        from dulwich.patch import git_am_patch_split
238
 
        import subprocess
239
 
        (c, diff, version) = git_am_patch_split(f)
240
 
        # FIXME: Cope with git-specific bits in patch
241
 
        # FIXME: Add new files to working tree
242
 
        p = subprocess.Popen(["patch", "-p1"], stdin=subprocess.PIPE,
243
 
            cwd=wt.basedir)
244
 
        p.communicate(diff)
245
 
        exitcode = p.wait()
246
 
        if exitcode != 0:
247
 
            raise BzrCommandError("error running patch")
248
 
        message = c.message
249
 
        if signoff:
250
 
            signed_off_by = wt.branch.get_config().username()
251
 
            message += "Signed-off-by: %s\n" % signed_off_by.encode('utf-8')
252
 
        wt.commit(authors=[c.author], message=message)
253
 
 
254
 
    def run(self, patches_list=None, signoff=False, force=False):
255
 
        from bzrlib.errors import UncommittedChanges
256
 
        from bzrlib.workingtree import WorkingTree
257
 
        if patches_list is None:
258
 
            patches_list = []
259
 
 
260
 
        tree, _ = WorkingTree.open_containing(".")
261
 
        if tree.basis_tree().changes_from(tree).has_changed() and not force:
262
 
            raise UncommittedChanges(tree)
263
 
        tree.lock_write()
264
 
        try:
265
 
            for patch in patches_list:
266
 
                f = open(patch, 'r')
267
 
                try:
268
 
                    self._apply_patch(tree, f, signoff=signoff)
269
 
                finally:
270
 
                    f.close()
271
 
        finally:
272
 
            tree.unlock()