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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) 2009-2010 Jelmer Vernooij <jelmer@samba.org>
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
 
 
18
 
"""Support for committing in native Git working trees."""
19
 
 
20
 
 
21
 
from dulwich.index import (
22
 
    commit_tree,
23
 
    )
24
 
import stat
25
 
 
26
 
from bzrlib import (
27
 
    revision as _mod_revision,
28
 
    )
29
 
from bzrlib.errors import (
30
 
    RootMissing,
31
 
    )
32
 
from bzrlib.repository import (
33
 
    CommitBuilder,
34
 
    )
35
 
 
36
 
from dulwich.objects import (
37
 
    S_IFGITLINK,
38
 
    Blob,
39
 
    Commit,
40
 
    )
41
 
 
42
 
 
43
 
from bzrlib.plugins.git.mapping import (
44
 
    entry_mode,
45
 
    )
46
 
from bzrlib.plugins.git.roundtrip import (
47
 
    CommitSupplement,
48
 
    inject_bzr_metadata,
49
 
    )
50
 
 
51
 
 
52
 
class GitCommitBuilder(CommitBuilder):
53
 
    """Commit builder for Git repositories."""
54
 
 
55
 
    supports_record_entry_contents = False
56
 
 
57
 
    def __init__(self, *args, **kwargs):
58
 
        super(GitCommitBuilder, self).__init__(*args, **kwargs)
59
 
        self._validate_revprops(self._revprops)
60
 
        self.store = self.repository._git.object_store
61
 
        self._blobs = {}
62
 
        self._any_changes = False
63
 
        self._will_record_deletes = False
64
 
        self._override_fileids = {}
65
 
        self._mapping = self.repository.get_mapping()
66
 
 
67
 
    def any_changes(self):
68
 
        return self._any_changes
69
 
 
70
 
    def record_entry_contents(self, ie, parent_invs, path, tree,
71
 
        content_summary):
72
 
        raise NotImplementedError(self.record_entry_contents)
73
 
 
74
 
    def record_delete(self, path, file_id):
75
 
        self._override_fileids[path] = None
76
 
        self._blobs[path] = None
77
 
        self._any_changes = True
78
 
 
79
 
    def record_iter_changes(self, workingtree, basis_revid, iter_changes):
80
 
        index = getattr(workingtree, "index", None)
81
 
        if index is not None:
82
 
            def index_sha1(path, file_id):
83
 
                return index.get_sha1(path.encode("utf-8"))
84
 
            text_sha1 = link_sha1 = index_sha1
85
 
        else:
86
 
            def link_sha1(path, file_id):
87
 
                blob = Blob()
88
 
                blob.data = workingtree.get_symlink_target(file_id, path)
89
 
                return blob.id
90
 
            def text_sha1(path, file_id):
91
 
                blob = Blob()
92
 
                blob.data = workingtree.get_file_text(file_id, path)
93
 
                return blob.id
94
 
        seen_root = False
95
 
        for (file_id, path, changed_content, versioned, parent, name, kind,
96
 
             executable) in iter_changes:
97
 
            if kind[1] in ("directory",):
98
 
                if kind[0] in ("file", "symlink"):
99
 
                    self.record_delete(path[0], file_id)
100
 
                if path[1] == "":
101
 
                    seen_root = True
102
 
                continue
103
 
            if path[1] is None:
104
 
                self.record_delete(path[0], file_id)
105
 
                continue
106
 
            if kind[1] == "file":
107
 
                mode = stat.S_IFREG
108
 
                sha = text_sha1(path[1], file_id)
109
 
            elif kind[1] == "symlink":
110
 
                mode = stat.S_IFLNK
111
 
                sha = link_sha1(path[1], file_id)
112
 
            elif kind[1] == "tree-reference":
113
 
                mode = S_IFGITLINK
114
 
                sha = "FIXME" # FIXME
115
 
            else:
116
 
                raise AssertionError("Unknown kind %r" % kind[1])
117
 
            if executable[1]:
118
 
                mode |= 0111
119
 
            self._any_changes = True
120
 
            encoded_new_path = path[1].encode("utf-8")
121
 
            self._blobs[encoded_new_path] = (mode, sha)
122
 
            file_sha1 = workingtree.get_file_sha1(file_id, path[1])
123
 
            if file_sha1 is None:
124
 
                # File no longer exists
125
 
                if path[0] is not None:
126
 
                    self.record_delete(path[0], file_id)
127
 
                continue
128
 
            _, st = workingtree.get_file_with_stat(file_id, path[1])
129
 
            yield file_id, path[1], (file_sha1, st)
130
 
            self._override_fileids[encoded_new_path] = file_id
131
 
        if not seen_root and len(self.parents) == 0:
132
 
            raise RootMissing()
133
 
        if getattr(workingtree, "basis_tree", False):
134
 
            basis_tree = workingtree.basis_tree()
135
 
        else:
136
 
            if len(self.parents) == 0:
137
 
                basis_revid = _mod_revision.NULL_REVISION
138
 
            else:
139
 
                basis_revid = self.parents[0]
140
 
            basis_tree = self.repository.revision_tree(basis_revid)
141
 
        # Fill in entries that were not changed
142
 
        for path, entry in basis_tree.iter_entries_by_dir():
143
 
            if entry.kind not in ("file", "symlink"):
144
 
                continue
145
 
            if not path in self._blobs:
146
 
                blob = Blob()
147
 
                if entry.kind == "symlink":
148
 
                    blob.data = basis_tree.get_symlink_target(entry.file_id,
149
 
                        path)
150
 
                else:
151
 
                    blob.data = basis_tree.get_file_text(entry.file_id, path)
152
 
                self._blobs[path.encode("utf-8")] = (entry_mode(entry), blob.id)
153
 
        if not self._lossy and self._mapping.BZR_FILE_IDS_FILE is not None:
154
 
            try:
155
 
                fileid_map = dict(basis_tree._fileid_map.file_ids)
156
 
            except AttributeError:
157
 
                fileid_map = {}
158
 
            for path, file_id in self._override_fileids.iteritems():
159
 
                assert type(path) == str
160
 
                if file_id is None:
161
 
                    del fileid_map[path]
162
 
                else:
163
 
                    assert type(file_id) == str
164
 
                    fileid_map[path] = file_id
165
 
            if fileid_map:
166
 
                fileid_blob = self._mapping.export_fileid_map(fileid_map)
167
 
                self.store.add_object(fileid_blob)
168
 
                self._blobs[self._mapping.BZR_FILE_IDS_FILE] = (stat.S_IFREG | 0644, fileid_blob.id)
169
 
            else:
170
 
                self._blobs[self._mapping.BZR_FILE_IDS_FILE] = None
171
 
        self.new_inventory = None
172
 
 
173
 
    def get_basis_delta(self):
174
 
        if not self._will_record_deletes:
175
 
            raise AssertionError
176
 
        # FIXME
177
 
        return []
178
 
 
179
 
    def finish_inventory(self):
180
 
        # eliminate blobs that were removed
181
 
        for path, entry in iter(self._blobs.items()):
182
 
            if entry is None:
183
 
                del self._blobs[path]
184
 
 
185
 
    def _iterblobs(self):
186
 
        return ((path, sha, mode) for (path, (mode, sha)) in self._blobs.iteritems())
187
 
 
188
 
    def commit(self, message):
189
 
        self._validate_unicode_text(message, 'commit message')
190
 
        c = Commit()
191
 
        c.parents = [self.repository.lookup_bzr_revision_id(revid)[0] for revid in self.parents]
192
 
        c.tree = commit_tree(self.store, self._iterblobs())
193
 
        c.committer = self._committer
194
 
        c.author = self._revprops.get('author', self._committer)
195
 
        if c.author != c.committer:
196
 
            self._revprops.remove("author")
197
 
        c.commit_time = int(self._timestamp)
198
 
        c.author_time = int(self._timestamp)
199
 
        c.commit_timezone = self._timezone
200
 
        c.author_timezone = self._timezone
201
 
        c.encoding = 'utf-8'
202
 
        c.message = message.encode("utf-8")
203
 
        if not self._lossy:
204
 
            commit_supplement = CommitSupplement()
205
 
            commit_supplement.revision_id = self._new_revision_id
206
 
            commit_supplement.properties = self._revprops
207
 
            commit_supplement.explicit_parent_ids = self.parents
208
 
            if commit_supplement:
209
 
                c.message = inject_bzr_metadata(c.message, commit_supplement, "utf-8")
210
 
 
211
 
        assert len(c.id) == 40
212
 
        if self._new_revision_id is None:
213
 
            self._new_revision_id = self.mapping.revision_id_foreign_to_bzr(c.id)
214
 
        self.store.add_object(c)
215
 
        self.repository.commit_write_group()
216
 
        return self._new_revision_id
217
 
 
218
 
    def abort(self):
219
 
        self.repository.abort_write_group()
220
 
 
221
 
    def will_record_deletes(self):
222
 
        self._will_record_deletes = True
223
 
 
224
 
    def revision_tree(self):
225
 
        return self.repository.revision_tree(self._new_revision_id)